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PEOPLES’REPUBLIC OF CHINABENGBU MUNICIPALITY

THE WORLD BANK

BENGBU INTEGRATED ENVIRONMENT IMPROVEMENT

PROJECT

Consolidated Environmental Assessment ReportDecember 2007

French Grant, FASEP n°34DGTPE, Ministère de l’Economie des Finances et de l’Industrie, Paris, France

27, rue de Vanves-92772 Boulogne Billancourt Cedex -France-Tél : 33 (0) 1 46 10 25 40Fax : 33 (0) 1 46 10 25 49E-mail : [email protected]

Room 207B, 2/F, 64 Shamian Street, Liwan District, Guangzhou, P.R. ChinaTel/Fax: (86 20) 8121 6968E-mail: [email protected]

E1699V4

mailto:[email protected]

Bengbu Integrated Environment Improvement Project

PEOPLE’S REPUBLC OF CHINABENGBU MUNICIPALITY

Bengbu Integrated Environment Improvement ProjectR3A- Consolidated Environmental Assessment Report

This report has been published in collaboration with SOGREAH CHINA

Objet de l'indice Date Indice Rédaction ValidationNom Signature Nom Signature

Consolidated Environmental

Assessment Report (R3A)

14 October 2007

Huang Xiaodan Gary Moys

a

b

c

d

Numéro de rapport(*):

Rig00006

Numéro d'affaire: A17978N° de contrat: CIGZ 07287Domaine technique: BV31

(*) This report is part of the environmental safeguard documents, which include three separate volumes:

- Consolidated Environmental Assessment Report (R3A)- Environmental Assessment Summary (R3B), and- Environmental Management Plan (R3C)

BURGÉAP27, rue de Vanves

92772 BOULOGNE-BILLANCOURT Cedex, FranceTéléphone: 33(0)1.46 10 25 40 Télécopie: 33(0)1. 46 10 25 49

e-mail: [email protected]

RIg00006 A17978/CIGZ070287XDH/GDM

October 2007 Page: 2/385

mailto:[email protected]


TABLE OF CONTENTS

TABLE OF CONTENTS..............................................................................................3

LIST OF TABLES........................................................................................................6

LIST OF FIGURES....................................................................................................10

LIST OF ANNEXES...................................................................................................11

ACRONYMS AND ABBREVIATIONS......................................................................12

1 INTRODUCTION.................................................................................................13

1.1 BIEIP Project Background & Organization..........................................................................................13

1.2 General Background for Consolidated EA.............................................................................................19

1.3 Coverage of this Consolidated EA...........................................................................................................21

1.4 Layout of the Consolidated EA Report...................................................................................................22

2 INSTITUTIONAL & REGULATORY FRAMEWORK...........................................23

2.1 Environmental Institutions and Roles.....................................................................................................23

2.2 Applicable Laws & Regulations...............................................................................................................24

2.3 Environmental Quality Standards...........................................................................................................25

2.4 World Bank Safeguards...........................................................................................................................27

3 ENVIRONMENTAL POLICY FRAMEWORK......................................................28

3.1 Main Environmental Issues and Strategies in Huai River Basin.........................................................28

3.2 Relevant Plannings of Bengbu Municipality..........................................................................................29

3.3 Project Conformity with the Master Plans.............................................................................................39

4 ENVIRONMENTAL BASELINE SITUATION......................................................43

4.1 Topography................................................................................................................................................44

4.2 Climate.......................................................................................................................................................44

4.3 Hydrology...................................................................................................................................................44




4.4 Geology.......................................................................................................................................................47

4.5 Soil and Vegetation...................................................................................................................................47

4.6 Air...............................................................................................................................................................48

4.7 Surface Water............................................................................................................................................51

4.8 Groundwater.............................................................................................................................................63

4.9 Water Supply.............................................................................................................................................65

4.10 Water Pollution.........................................................................................................................................67

4.11 Noise...........................................................................................................................................................75

4.12 Sediment Quality.......................................................................................................................................81

4.13 Solid Waste Management.........................................................................................................................89

4.14 Ecological Environment............................................................................................................................90

4.15 Natural Disasters.......................................................................................................................................90

4.16 Social Environment...................................................................................................................................91

4.17 Cultural Archaeology Resources.............................................................................................................92

5 PROJECT DESCRIPTION..................................................................................94

5.1 Project Summary......................................................................................................................................94

5.2 Description of Proposed Sub-Projects.....................................................................................................97

5.3 Analysis of Project Pollution Sources....................................................................................................104

5.4 Environmental Sensitive Points.............................................................................................................106

6 ENVIRONMENTAL IMPACT ANALYSIS..........................................................117

6.1 Impact Screening.....................................................................................................................................117

6.2 Project Benefits........................................................................................................................................117

6.3 Environmental Impacts during Construction Period..........................................................................125

6.4 Environmental Impacts during Operation...........................................................................................134

7 MITIGATION MEASURES................................................................................196

7.1 Mitigation Measures during Construction Period...............................................................................196

7.2 Mitigation Measures during Operation Period....................................................................................210

8 ALTERNATIVE ANALYSIS...............................................................................219

8.1 Zero-project Analysis..............................................................................................................................219RIg00006 A17978/CIGZ070287XDH/GDM



LIST OF TABLESTable 1: Linkages between BIEIP and Anhui Water Environment Improvement Project....18Table 2: Summary of EA Documentations.........................................................................20Table 3: New industrial parks...........................................................................................30Table 4: Bengbu Municipality Estimated Wastewater Amount（10,000 m3/d）.................31Table 5: Planned Wastewater Drainage System...............................................................33Table 6: Planning of Storm Drainage Catchments in Bengbu Urban Area.........................34Table 7: Conformity of the Proposed Projects with Existing Master Plans.........................40Table 8: Composition of Water Systems in Bengbu..........................................................45Table 9: Air Quality Monitored Data of Bengbu Urban Area in 2005.................................48Table 10: Statistics of Comprehensive Pollution Indices for Key Pollutants at Monitoring

Points in 2005.............................................................................................................48Table 11: Statistics of Acidic Rain in Bengbu (2000-2005)................................................49Table 12: Air Quality Monitoring and Analysis around Tianhe in 2005..............................49Table 13: Results of Air Quality Assessment for Huaiyuan County....................................50Table 14: Air Quality Monitoring Results for Wuhe County................................................50Table 15: Results of Air Quality Assessment for Wuhe County..........................................51Table 16: Water Quality Classification of Huai River within Bengbu (2000-2006).............52Table 17: 2006 Monthly Average Water Quality Monitoring Data of Huai River................54Table 18: Evaluation Results for the Annual Mean of Water Quality in the Bengbu Section of

the Huai River in 2006................................................................................................54Table 19: Routine Monitoring of Water Quality in Tianhe Lake in 2006.............................55Table 20: Evaluation Results of Water Quality in Tianhe Lake..........................................55Table 21: Water Quality Monitoring Results of Longzi Lake..............................................56Table 22: Evaluation Results of Water Quality in Longzi Lake...........................................56Table 23: Ranking of Key Pollutants in the Longzi Lake....................................................56Table 24: Evaluation of water quality in the Guo River.....................................................57Table 25: Evaluation Results of Water Quality in Guo River..............................................57Table 26: Monitoring Results for the Guzhen Section of Hui River (2001-2005)................58Table 27: Evaluation Results of Water Quality in the Hui River.........................................58Table 28: Water Quality Monitoring Results for Xiangjian Lake of Huaihongxin River.......59Table 29: Evaluation Results of Water Quality in Huaihongxin River................................59Table 30: Monitoring Results of Water Quality in Xijiagou Canal.......................................61Table 31: Evaluation Results for the Water Quality of Xijiagou Canal...............................61Table 32: Water Quality Monitoring Results of Sanpu Great Ditch....................................61Table 33: Water Quality Evaluation Results of Sanpu Great Ditch....................................62Table 34: Water Quality Monitoring Results for the Ponds in Huaiyuan County................62Table 35: Evaluation Results for the Water Quality of the Ponds in Huaiyuan County......62Table 36: Monitoring of water quality in Zhanggong Mount Pond.....................................63Table 37: Groundwater Quality in Bengbu Municipality....................................................64Table 38: Groundwater Quality Monitoring Results for the Area around Longzi Lake........64Table 39: Evaluation of Groundwater Quality in Longzi Lake Area....................................64Table 40: Water Supply Composition of Bengbu Municipality in 2005..............................66Table 41: Water Quality of Major Centralized Drinking Water Source in Bengbu (Upstream of

Bengbu Gate on Huai River).......................................................................................67Table 42: Non-compliant months for water intake upstream of Bengbu Gate...................67Table 43: Monitoring Data of Major Sewage Outfalls in Bengbu Urban Area in 2006........68Table 44: Statistics of Pollution Discharge by Key Industrial Polluters in Bengbu in 2006.70Table 45: Wastewater Discharge of the Industrial Polluters in the Project Area................74Table 46: Noise Monitoring Values of Urban Area in 2006................................................75Table 47: Monitored Data on Road Traffic Noise Pollution in 2006 in Bengbu...................75Table 48: Noise Monitoring Results around Tianhe Lake...................................................77Table 49: Noise Monitoring Results around Longzi Lake...................................................77Table 50: Noise Monitoring Results for the Project-related Urban Area.............................78




Table 51: Noise Monitoring Results of around Baligou and Xijiagou Canals......................79Table 52: Noise Monitoring Results of Huaishang Dis.......................................................79Table 53: Noise Monitoring Results of Guzhen County......................................................79Table 54: Noise Monitoring Results of Huaiyuan...............................................................80Table 55: Noise Monitoring Results of Mohekou Industrial Park........................................81Table 56: Vertical Distribution of Sediment in Longzi Lake...............................................82Table 57: Monitoring Results of Sediment in Longzi Lake.................................................82Table 58: Additional Sediment Monitoring Results of Longzi Lake....................................83Table 59: Background Soil Characteristics in Chinese Provinces......................................84Table 60: Ecological Risk Factors and Indices of Heavy Metals in the Sediment of Longzi

Lake...........................................................................................................................84Table 61: Sediment Monitoring Results of Baligou and Xijiagou Canals............................85Table 62: Ecological Risk Factors and Indices of Heavy Metals in Baligou and Xijiagou....86Table 63: Sediment Monitoring Results of Guzhen Desilting Project.................................86Table 64: Evaluation of Sediment Ecological Risk.............................................................87Table 65: Sediment Monitoring Results of Haiyuan Desilting Project................................87Table 66: Sediment Monitoring Results of Mohekou Industrial Park..................................88Table 67: Evaluation of Sediment Ecological Risk for Wuhe Project..................................88Table 68: Solid waste production and disposal in Bengbu (2000-2005)............................89Table 69: Historical Flood Events in Bengbu.....................................................................90Table 70: Summary of BIEIP sub-projects.........................................................................94Table 71: Composition of Longzi Lake Flood Control and Environment Improvement Project

................................................................................................................................... 97Table 72: Composition of Urban (South of Huai River) Environmental Infrastructure

Improvement Project..................................................................................................98Table 73: Composition of Xijiagou & Baligou Environment Improvement Project.............99Table 74: Composition of Huaishang Flood Control and Urban Environmental Infrastructure

Improvement Project................................................................................................100Table 75: Composition of Guzhen County Integrated Environment Improvement Project101Table 76: Composition of Huaiyuan County Integrated Environment Improvement Project

.................................................................................................................................102Table 77: Composition of Wuhe County Mohekou Integrated Environment Improvement

Project......................................................................................................................103Table 78: Environment Sensitive Points of Tianhe PS.....................................................106Table 79: Environment Sensitive Points of Longzi Lake Project......................................107Table 80: Environment Sensitive Points of Urban (South of Huai River) project..............108Table 81: Environment Sensitive Points of Xijiagou and Baligou Project.........................110Table 82: Environment Sensitive Points of Huaishang Project........................................111Table 83: Environment Sensitive Points of Guzhen Project.............................................112Table 84: Environment Sensitive Points of Huaiyuan Project..........................................113Table 85: Environment Sensitive Points of Wuhe Mohekou Project.................................115Table 86: List of Storm Drainage PSs to be Constructed and Reconstructed..................118Table 87: Estimated Annual Pollutant Discharge for Bengbu Urban Area for 2010.........120Table 88: Reduction of Total Pollutant Discharge by the WWTP for Mohekou Industrial Park

.................................................................................................................................121Table 89: Summary of Major Environmental Benefits for Desilting Projects....................121Table 90: Estimated Benefit from Water Supply by Mohekou WTP.................................125Table 91: Estimated Operational Benefits of Mohekou WWTP........................................125Table 92: Dust Generation by Vehicles at Different Speed and with Different Ground

Surface Cleanness....................................................................................................127Table 93: TSP Monitoring Results Downwind of the construction site.............................127Table 94: Sub-project Area Impact by Flying Dust..........................................................128Table 95: Rating of Six-level Odor Intensity (by Japanese

Environmental Hygiene Department).......................................................................128Table 96: Odor Intensity by Desilting (dry excavation in the dry pond) for the Nanpaozi of

Mudanjiang...............................................................................................................129Table 97: Sound Levels of Major Construction Machinery...............................................130Table 98: Calculation of noise attenuation of major noise-making machinery in the




construction period..................................................................................................130Table 99: Noise Attenuation of Major Noise-making Machinery during Construction

Unit: dB (A)...............................................................................................................131Table 100: Statistics of Sewage Discharge from the Urban Sewage Discharge Outfalls. 135Table 101: Estimated Collection Rate of Bengbu Municipal Sewage Network.................136Table 102: Statistical Analysis of Water Quality at the Outfalls of Bengbu Urban Area in

2005.........................................................................................................................137Table 103: Reverse deduction estimate table of water quality of untreated sewage water of

Bengbu City in 2005.................................................................................................139Table 104: Estimated table of yearly total emissions of the pollutants of.......................140Table 105: Statistical table of date of pollution discharge outlet and monitoring section of

Bengbu City..............................................................................................................142Table 106: Statistical table of drainage of Bengbu City’s sewage treatment plants

10000 m3/d..............................................................................................................143Table 107: Summary statement of inlet and outlet water quality of the sewage treatment

plants.......................................................................................................................146Table 108: List of prediction contents of water environment of Bengbu section of the Huai

River in 2010............................................................................................................147Table 109: Summary statement of conditions of prediction and parameters..................149Table 110: Prediction table of water quality of the sewage treatment plant under the

operation period.......................................................................................................150Table 111: Prediction results of water quality during normal operation period of the sewage

treatment plant........................................................................................................160Table 112: Prediction results of accidental discharge water quality of the sewage treatment

plant.........................................................................................................................162Table 113: Desilting wastewater composition of silt of the Sea of Grass........................164Table 114: Nitrogen and phosphorus contents in the different desilting areas of the

desilting project for the Sea of Grass, the Dianchi River...........................................165Table 115: Prediction emission concentration of project engineering wastewater

Unit: mg/L.................................................................................................................166Table 116: Prediction of wastewater pollution contribution to the water quality of Longzi

Lake.........................................................................................................................166Table 117: Comparison situation of water quality before and after the implementation of

the Chaohu River desilting project...........................................................................169Table 118: Prediction results of Tianhe drainage pump station’s noise..........................172Table 119: Prediction results of the Longzi Lake drainage pump station’s noise............175Table 120: Prediction parameters table of typical sections’ noise..................................179Table 121: Noise prediction table of typical sections with different distances

Unit：dB (A)..............................................................................................................179Table 122: Comparison of the Longzi Lake desilting sludge............................................180Table 123: Comparison of Baligou, Xijiagou sediment with the standard.......................182Table 124: Emissions of main solid wastes of sewage treatment plant..........................184Table 125: Statistical table of seasonal and yearly average temperature and wind speed of

Bengbu City..............................................................................................................187Table 126: Statistical results of wind direction and frequency in each month of the year187Table 127: Statistical table of distribution frequency of Atmospheric stability................190Table 128: Rainfall Characteristics Table........................................................................190Table 129: Average wind speed, hour concentration prediction results of the downwind H2S

with the different stabilities......................................................................................192Table 130: Average wind speed, hour concentration prediction results of the downwind NH3

with the different stabilities......................................................................................193Table 131: Calculating results of sanitation protection distance of sewage treatment plant

.................................................................................................................................194Table 132: Desilted Sludge Disposal for Desilting Projects.............................................201Table 133: Zero-project Analysis for Tianhe Flood Control Project..................................219Table 134: Zero-option Analysis for Longzi Lake Flood Control and Environment

Improvement Project................................................................................................220Table 135: Zero-project Analysis for Urban (South of Huai River) Environmental Infrastructure




Improvement Project...................................................................................................221Table 136: Zero-option Analysis for Xijiagou & Baligou Environment Improvement Project

.................................................................................................................................222Table 137: Zero-project Analysis for Huaishang District flood control and Urban Environmental

Infrastructure Improvement Project.................................................................................223Table 138: Zero-project Analysis for Guzhen County Integrated Environment Improvement Project

.................................................................................................................................224Table 139: Zero-project Analysis for Huaiyuan County Integrated Environment Improvement Project

.................................................................................................................................225Table 140: Zero-project Analysis for Wuhe County Mohekou Integrated Environment Improvement

Project.......................................................................................................................226Table 141: Comparison for Desilting Methods................................................................227Table 142: Comparison of Water Source Options for Mohekou WTP...............................229Table 143: Alternative Analysis of Water Intake Process................................................232Table 144: Alternative Analysis of WWTP Location.........................................................233Table 145: Alternative Comparison for the Outfall of the Mohekou WWTP......................234Table 146: List of Contracted Industries in Mohekou Industrial Park...............................235Table 147: Influent Quality of the WWTPs in Shanghai and Nanking Chemical Industrial

Parks........................................................................................................................236Table 148: Alternative Analysis for the Biological Treatment Process of Mohekou WWTP237Table 149: Alternative Analysis of Advanced Treatment Process....................................238Table 150: Comparison of CODcr Removal Rate between Tianjin Chemical Industrial Park

and Mohekou Industrial Park....................................................................................238Table 151: Summary of Information Disclosure for BIEIP................................................240Table 152: Summary of Public Opinions and the Feedback Results................................249Table 153: Summary of Public Consultation Meeting Results for the Huaiyuan Project. .251Table 154: Summary of Public Consultation Meeting Results for the Guzhen Project.....253Table 155: Summary of Public Consultation Meeting Results for the Mohekou Project in the

Wuhe County............................................................................................................255Table 156: Summary of Expert Consultation Results for BIEIP........................................257Table 157: Summary of Public Participation for BIEIP.....................................................261Table 158: Managerial Relationship between Administrative Authority and Project.......267Table 159: Summary of BIEIP EMP....................................................................................272




LIST OF FIGURESFigure 1: Map of Huai River Basin.....................................................................................13Figure 2: Topographic Map of Huai River Basin and Its Relative Location Compared with

Other Major Rivers in China........................................................................................14Figure 3: Location of Bengbu in P.R. China.......................................................................15Figure 4: Organization Chart of BIEIP................................................................................16Figure 5: Coverage of World Bank and Japanese loan-funded projects in Bengbu............17Figure 6: Overview of Bengbu Urban Wastewater and Storm Drainage Plan....................32Figure 7: Aquatic Systems in Bengbu Municipality............................................................46Figure 8: Variation of Water Quality Classification for Huai River (2004-2006).................53Figure 9: Water Intake & Water Quality Monitoring Cross-sections along Huai River........53Figure 10: Groundwater Distribution around Mohekou Industrial Park..............................65Figure 11: Distribution of Sewage Outfalls in Bengbu Urban Area....................................68Figure 12: Percentage of Sewage Flow for the Seven Urban Sewage Outfalls..................69Figure 13: NH3-N Contribution of Seven Sewage Outfalls in the Urban Area.....................69Figure 14: COD Contribution of Seven Sewage Outfalls in the Urban Area.......................70Figure 15: Districts & Counties of Bengbu Municipality.....................................................92Figure 16: Project Overview..............................................................................................96Figure 17: Proposed Storm Drainage Pumping Stations in the urban area, Huaiyuan County

and Wuhe County and their Catchments..................................................................117Figure 18: Proposed Storm Drainage Pumping Stations in Guzhen County and their

Catchments..............................................................................................................118Figure 19: Statistic Analysis of Sewage Discharge from Bengbu Urban Outfalls.............136Figure 20: Statistical analysis chart of CODcr emissions of Bengbu City........................138Figure 21: Statistical analysis chart of NH3-N emissions of Bengbu City pollution discharge

outlets in 2005.........................................................................................................138Figure 22: Statistical Chart of Sewage Discharge Amount in 2010.................................140Figure 23: Statistical Chart of Total Discharge Amount of CODcr in 2010.......................141Figure 24: Statistical Chart of Total Discharge Amount of NH3-N in 2010.......................141Figure 25: 2010 Urban Drainage Proposal C, D - Prediction Chart of CODcr Discharge Impact

.................................................................................................................................152Figure 26: 2010 Urban Drainage Proposal C, D - Prediction Chart of CODcr Discharge Impact

.................................................................................................................................153Figure 27: 2010 Urban Drainage Proposal A, B - Prediction Chart of NH3-N Discharge Impact

.................................................................................................................................154Figure 28: 2010 Urban Drainage Proposal C, D - Prediction Chart of NH3-N Discharge Impact

.................................................................................................................................155Figure 29: Prediction results of project engineering wastewater discharge on the water167Figure 30: Annual wind direction rose diagram of Bengbu City......................................188Figure 31: Locations of Optional Water Sources for the Proposed Mohekou WTP...........229Figure 32: Alternatives for the WTP Location..................................................................231Figure 33: Alternatives for Mohekou WWTP Location......................................................233Figure 34: Online Public Notification of Project Information (Phase II)............................241Figure 35: Information Disclosure at the Project Sites (Phase I)......................................242Figure 36: Information Disclosure about Public Consultation in Bengbu Daily (Phase II).242Figure 37: Information Disclosure of EA reports (Phase III).............................................243Figure 38: Public Participation........................................................................................244




LIST OF ANNEXESAnnex 1 Maps & Drawings

Annex 2 Major Applicable Environmental Standards

Annex 3 Project Environmental Impact Screening Table

Annex 4 Sampling, Monitoring and Analysis Methods Adopted in the EA Activities

Annex 5 List of Relevant Meetings

Annex 6 References




Acronyms and Abbreviations

AWEIP Anhui Water Environment Improvement ProjectBDC Bengbu Drainage CompanyBIEIP Bengbu Integrated Environment Improvement

ProjectBOT build-operate-transferCB Construction BureauCEA Consolidated Environmental AssessmentCOD Chemical Oxygen DemandDI Design InstituteDRA Design Review and Advisory (consultant

BURGEAP)DRC Development and Reform CommissionEA Environmental AssessmentEIA Environmental Impact AssessmentEPB Environmental Protection BureauFSR Feasibility study reportGDP Gross Domestic ProductHH HouseholdHRWRC Huai River Water Resource CommissionNCMDI North China Municipal Design InstituteO&M Operation and MaintenancePIU Project Implementation UnitPMO Project Management OfficePS Pumping StationPSP Private Sector Participation RAP Resettlement Action PlanSA Social AssessmentSEPA State Environment Protection AgencySOE State Owned EnterpriseTA Technical assistanceWB World BankWRB Water Resources BureauWTP Water treatment plantWWTP Waste Water Treatment Plant




1 Introduction

1.1 BIEIP Project Background & Organization

1.1.1 Huai River Basin

The Huai River Basin is the third largest river basin of China covering 270,000 km2 of four provinces (Anhui, Henan, Jiangsu and Shandong). Its total population is 165million1, and its population density is 611persons/km2, which is 4.8 times of the national level. Due to its central location in China, Huai River Basin has a very developed transportation system, which consists of several key railways, Jinghang Canal, Huai River, inland rivers and highways extending in all directions. Featured by its typical agricultural economy, the basin is also strategically important for the whole country from an economic perspective. It produces 1/6 of the nation’s food and 1/4 of the national cash crops with only 1/12 of the national arable land area. However, the gross industrial output value, GDP and per-capita GDP of the basin are still lower than the national levels, that is, the basin still belongs to the economically undeveloped area in China.

Figure 1: Map of Huai River Basin

1 Data by the end of 2000.RIg00006 A17978/CIGZ070287

XDH/GDMOctober 2007 Page: 13/385


Figure 2: Topographic Map of Huai River Basin and Its Relative Location Compared with Other Major Rivers in China

The particular geographical and climatic conditions with the addition of the interference by human activities for decades have made the Huai River Basin very vulnerable to floods and droughts. Although a complicated flood control system consisting of reservoirs, flood storage and discharge projects, dykes, rivers and flood ways has been developed for the basin since the foundation of the P.R.C., it still suffers a lot from the floods once every three to five years. In addition, despite the great efforts put by the central and local governments since 1990’s, the water pollution remains a major concern for the basin due to the rapid industrial development and urbanization in this area.

1.1.2 Bengbu Municipality

Bengbu Municipality, located in the northeast of Anhui province, covers an area of 5952 km2 (4.27% of the provincial area) and a population of 3.49 million (5.36% of the province figure). Bengbu is the first municipality of Anhui Province, which is also one of the most important traffic hubs in East China and the biggest port city along Huai River. As an old industrial city, Bengbu is the processing /technology and commerce centre in Northern Anhui. The major industries in Bengbu include deep processing of agricultural products and fine chemicals, glass and glass products, special machinery manufacture and automobile parts. With the approval of the State Council, it is also one of the pilot cities in Middle China who benefit from the same national policies as applied to the revitalization of Old Industrial Base in Northeast China2. With the rapid economic development and urbanization, the current per capita GDP of Bengbu has reached 10000yuan. During the “Tenth-five-year” period, Bengbu Municipality has attracted 43million USD foreign 2 Notification on the Implementation of Relevant Policies Applied for the Revitalization of the Old Industrial Base in Northeast China and the Development of Western China in Six Provinces of Middle China issued by the State Council Office, Jan. 1st 2007.




investment and 13.5billion RMB domestic investment from out of Bengbu, mainly for the secondary and tertiary industries.However, due to the insufficient industrial investment and irrational industrial structure, the gross industrial output of the city is 9.65billion Yuan, accounting for 5.26% of the total provincial gross industrial output and ranked No.9 in the province behind the municipalities such as Hefei, Wuhu, Ma’anshan and Anqing.In addition, as an important city in the middle and lower reaches of Huai River Basin, Bengbu also suffers a lot from frequent floods, ecosystem deterioration and water pollution. Both its urban environment and water supply are endangered by the incompletion of urban sewage network and wastewater treatment facilities.

Figure 3: Location of Bengbu in P.R. China

1.1.3 BIEIP Project Organization

Under the Leadership of the Municipal Project Leading Group, the Bengbu Municipal World Bank Project Management Office (“the municipal PMO”) has been designated by the municipal government as its representative for the project coordination and management. Consequently, the municipal PMO is at the centre of the project management process. Requests for administrative and technical assistance funds originate with the municipal PMO. Requests for reimbursements of construction costs originate from the Implementing Agencies through the local PMOs for review and approval and then to Anhui Provincial Finance Bureau for review, approval and forwarding to the Bank. The municipal PMO appoints technical assistance (TA) consultants for the project, selects the tendering companies, and upon recommendation of the technical assistance consultants, designates the construction supervision company. The local Project Offices may also designate local construction supervisors. Each project has its own project management office, which represents the project area or the county. At municipal level the provincial Audit Bureau has delegated the audit responsibility to the Municipal Audit Bureau. At municipal level, several agencies are involved at various degrees of responsibilities: Municipal DRC, Municipal Finance Bureau, Construction Commission, Municipal EPB, and Municipal Water Resources Bureau (WRB). The French Government provided a grant to the Bengbu Municipal Government for a technical assistance from the French consulting company BURGEAP, to assist the municipal government in project planning and design, and for the preparation of the




technical, environmental and financial documentation to be presented to the WB for loan eligibility.

Figure 4: Organization Chart of BIEIP

1.1.4 Contributions of World Bank & Other Financing Agencies

Due to the important location in Huai River Basin, the Municipality of Bengbu has also benefited from some other on-going projects financed by World Bank and other financing agencies, including Huai River Pollution Control Project (P047345, World Bank), Huai River Basin Flood Management and Drainage Improvement Project (P098078, World Bank) and Anhui Water Environmental Improvement Project (AWEIP, Japanese loan). Huai River Pollution Control Project was approved in March 2001 by World Bank, which mainly aims at the improvement of wastewater collection and treatment in a number of municipalities in Anhui and Shandong Provinces including Bengbu. Its investments in Bengbu includes the construction of 28.5km sewers, 70.4km interceptors, 1.5km pumping mains and 5 PSs, most of which are located in Bengbu urban area and Huaishang District. The project is expected to be completed by the end of 2007.Huai River Water Resources Commission started the preparation of another major flood management project for potential financing by the Bank in 2005, which is called Huai River Basin Flood Management & Drainage Improvement Project (P098078). The project aims at the increase of local agricultural productivity and farmers’ incomes by better protecting against floods, the properties and lives of many people living in predominantly rural areas of the Huai River Basin. This would be done through the provision of improved flood control and drainage works and strengthened institutional capability to effectively reduce the severity and impact of flooding and water logging in Anhui, Henan, Jiangsu and Shandong provinces. As an important city in the river basin, the involvement of Bengbu in this project would certainly improve the dialog between the municipality and the basin-wide administration.The Anhui Water Environmental Improvement Project, financed by Japanese loan (JBIC), aims to reduce polluted water discharged into the Huai River and ensure a stable supply of safe drinking water to Bengbu City by developing its water supply and sewerage infrastructure. Specifically, the project consists of five sub-projects, i.e. Yangtaizi WWTP; 134.84km sewage network and PSs in Bengbu city; Guobei WWTP, 59.3km sewage network, WTP expansion, 100km water supply network and 110km drainage network in Huaiyuan County; 30km water supply network and 40km drainage network in Wuhe County and water supply & sewage system in Guzhen County. The loan agreement has been signed in May 2007 for the total investment of 1.11billion yuan.




The coverage of the above mentioned projects is shown in Figure 5 together with the locations of the proposed BIEIP components. It is shown that the three projects have covered the urban area and the three counties of Bengbu Municipality. However, the Huai River Pollution Control Project and the Anhui Water Environment Improvement Project mainly focus on the improvement of municipal infrastructure, such as sewers, sewage PSs, the WWTPs and the WTPs; while the proposed BIEIP will mainly focus on the improvement of local flood control and storm management facilities, such as storm PSs, drainage network and river de-silting.

Note: For AWEIP, there is no exact project location available. The red dots only stand for the rough project location.

Figure 5: Coverage of World Bank and Japanese loan-funded projects in BengbuIn addition, the linkages between the World Bank financed BIEIP and the Japanese Loan funded Anhui Water Environment Improvement Project are analyzed in details in the following table.




Table 1: Linkages between BIEIP and Anhui Water Environment Improvement Project

AWEIP BIEIPThe linkage of BIEIP

components with AWEIPSub-project name

Related components

Sub-project name

Related components

Yangtaizi WWTP Yangtaizi WWTP

Urban Drainage System and Storm PSs

Storm network in the old urban area, Gaoxin

District, Jingfa District and

Longzi Lake Dis.

Some sewage network under BIEIP in the old urban area, Jingfa District and Longzi Lake Dis. are connected to the proposed WWTP under AWEIP.

Bengbu Municipal Drainage System Project

East Shengli Rd. sewage PS

Sewage and storm drainage

network in Longzi Lake Dis.

The wastewater collected by the sewage network under BIEIP in Longzi Dis. will be pumped by the PS under AWEIP to Yangtaizi WWTP.

Huangshan Rd. sewage PS

Storm & sewage network scattered

in the Gaoxin District

The wastewater collected by the sewage network under BIEIP in the southeast of Gaoxin District will be pumped by the PS under AWEIP to the planned South City WWTP.

Huangshan sewage and storm drainage

network

The sewage network along Bengxi Rd., Youyi Rd., South Changzheng Rd. and South Changqing Rd. under BIEIP is connected with the sewer trunk under AWEIP.

Storm drainage network covering

the whole planning area of Huaishang

Dis.Huaishang Flood Control & Integrated Environment Improvement Project

Sewage network west of North Daqing Rd.

AWEIP provides the storm drainage network and BIEIP

provides the sewage network for the same area.

Urban Road on the northern bank

of Huai River together with 21

smaller roads and their associated

storm and sewage network

AWEIP and BIEIP complement each other to cover the

infrastructure for the new developed area along the

northern dyke of Huai River.

Rehabilitation of five canals:

Wangxiaogou, Xiaobengbu Wuxiaojie,

Wuxiaojie No.1 and Wuxiaojie No.2

Wuxiaojie Storm PS, Expansion of Xiaobengbu PS,

and Wangxiaogou PS

The canal rehabilitation under AWEIP provides support to the

PS projects under BIEIP.

Water Supply and Drainage

Network of Wuhe

County

Project location: the Southern New Urban Area of Wuhe County

Wuhe Flood Control and Ecological

Improvement Project

Mohekou TownTwo different areas of Wuhe

County are covered respectively by AWEIP and BIEIP.

Guzhen Water

Supply & Sewage System

Water Supply & Sewage System for

the Southern Industrial Park of

the County

Guzhen Flood Control & Ecological

Improvement Project

Drainage Network of Guzhen County

Two different areas of Guzhen County are covered respectively

by AWEIP and BIEIP.




AWEIP BIEIPThe linkage of BIEIP

components with AWEIPSub-project name

Related components

Sub-project name

Related components

Phase II of Guzhen No.2 WTP

Wastewater interception

project for the west of Guzhen

The wastewater interception project under BIEIP is just to prevent the direct wastewater

discharge from the west of Guzhen into Hui River to protect

the water quality of Hui River, the water source of Guzhen

No.2 WTP.

Huayuan Guobei Water

Environment Project

WTP for Guobei, the new industrial park and the food processing park Huaiyuan

Flood Control &

Environment Improvement

Project

Storm drainage network and roads for the West Food

Processing ParkThe proposed storm PSs under

BIEIP are for the drainage network under BIEIP and

AWEIP.

Storm drainage network of the

township

Storm drainage network and PSs for the township

Guobei WWTP (including the

wastewater reuse plant)

/

Note: The environmental impact assessment reports for all the sub-projects of the Anhui Water Environment Improvemental Project have been approved by Anhui Provincial EPB in September 2007.

1.2 General Background for Consolidated EA

1.2.1 Classification of Consolidated EA

In accordance with PRC National Regulations and the World Bank Operational Policy 4.01 related to Environmental Assessment, a “Category A - Consolidated EA” is to be prepared for the whole BIEIP Project including flood control, water resource management, wastewater and water supply components. This consolidated EA report will a comprehensive analysis of project targets, specific impacts of the sub-components with their mitigation measures and outlines the dominant socio-economic improvements to the welfare of communities. This report is complemented by:i) Consolidated Resettlement Action Plan (RAP);ii) Consolidated Environmental Management and Monitoring Plan (EMP);iii) EA Summary Report, andiv) Individual EA Reports for each sub-project component.

1.2.2 Preparation of CEA

The Project technical and financial preparation carried out by Chinese local organizations has been supported by international assistance to BIEIP provided by BURGEAP, the Design Review and Advisory Services (DRAS) Consultants to the BIEIP World Bank project management office who is responsible for the overall preparation and coordination of the project.For the 8 sub-projects, Zhongnan Design Institute (Zhongnan) and Bengbu Municipal Survey & Design Institute were appointed by the project owner (BIEIP Municipal PMO) to




carry out the feasibility studies and to produce Feasibility Study Reports (FSRs). For the environmental assessment documents, the PMO has appointed the North China Municipal Design Institute (NCMDI), a Class A certified EA institute based in Tianjin, to prepare all the individual EAs. NCMDI is also appointed to prepare the Chinese Consolidated EA for BIEIP as well as the Environmental Management Plans (one per sub-project). In accordance with the Government Regulation “Environmental Impact Assessment Law” of September 2003, Strengthening Environmental Impact Assessment Management for Construction Projects Loaned by International Finance Organisation” of June 21, 1993 and the World Bank Safeguards Operational Policy, the PMO has requested the DRA Consultants to assist in the preparation of the English consolidated EA, as well as to prepare the English versions of the EMP and of the EA Summary. Various assistances have been provided by DRA consultants since February 2007 to introduce the World Bank Safeguards requirements in the preparation of EA documentation, including the report framework for individual EMPs and consolidated EA.The present Consolidated EA report is based on individual EA studies carried out for each sub-project of the BIEIP. It has been prepared by NCMDI with the assistance of the DRAS Consultant. According to Chinese regulations, the Anhui Provincial EPB is responsible for review and approval of the eight individual EA reports. The whole set of EA documentations are summarized in the table below.

Table 2: Summary of EA Documentations

No Name of the Document

Project Component Covered in Document Date of the Document

Date of Disclosure

Disclosure Location

1 EIA Report for Tianhe Flood Control Project

Tianhe Storm Drainage PS: 55m3/s. Aug. 8th, 2007 Aug. 10th, 2007

Aug. 12th, 2007

www.bengbu.gov.cn

Bengbu Municipal Library

2 EIA Report for Longzi Lake Flood Control and Environment Improvement Project

- Longzi Lake Storm Drainage PS: 40m3/s

- Longzi Lake Desilting Project: About 2.2million m3;

- Longzi Lake Slope Improvement Project.

Aug. 8th, 2007 Aug. 10th, 2007

Aug. 12th, 2007

www.bengbu.gov.cn


3 EIA Report for Urban (South of Huai River) Environmental Infrastructure Improvement Project

- 3 storm pumping stations and about 8.9km drainage pipes in old urban area (including storm water and wastewater pipes);

- About 38km storm drainage network and 17km road project in Jingfa District;

- About 16km storm drainage network, about 2.8km sewers and wastewater lifting pumping station in Gaoxin District;

- About 11km storm drainage network and 1.9km sewer and 1.76km road project in Longzi Lake District

Aug. 8th, 2007 Aug. 10th, 2007

Aug. 12th, 2007

www.bengbu.gov.cn


4 EIA Report for Xijiagou & Baligou Environment Improvement Project

- Desilting and slope improvement of Xijiagou Canal: 5.56km;

- Desilting and slope improvement of Baligou Canal: 3.72km.

Aug. 8th, 2007 Aug. 10th, 2007

Aug. 12th, 2007

www.bengbu.gov.cn




http://www.bengbu.gov.cn/











Date of Disclosure

Disclosure Location

5 EIA Report for Huaishang District Flood Control and Urban Environmental Infrastructure Improvement Project

- Wuxiaojie Storm Drainage PS and related projects: 80.8m3/s;

- Expansion of Xiaobengbu Storm Drainage PS: about 18.2m3/s;

- Desilting of Wangxiaogou Ditch: 3.6km new excavation and 5.5km expansion;

- Wangxiaogou Storm Drainage PS: 16.3 m3/s;

- Road project and supportive facilities: about 11.9km;

- Sewage transfer trunk from Guobei urban area to Huaishang District: 6.8km.

Aug. 8th, 2007 Aug. 10th, 2007

Aug. 12th, 2007

www.bengbu.gov.cn


6 EIA Report for Guzhen County Integrated Environment Improvement Project

- Drainage network: 9.19km;

- Embankment: 20,100m3;

- Desilting works: 395,600 m3;

- Access road to the top of dyke;

- New culvert and gate: two gates and one connective culvert;;

- New construction and reconstruction of 5 storm drainage pumping stations;

- 3 new bridges;

- Slope protection and greening project;

- Non-engineering measures, such as flood monitoring system.

Aug. 8th, 2007 Aug. 10th, 2007

Aug. 12th, 2007

www.bengbu.gov.cn

Guzhen County Library

7 EIA Report for Huaiyuan County Integrated Environment Improvement Project

- Desilting and rehabilitation of flood drainage canals;

- Drainage network: about 6km;

- 2 storm Drainage PS;

- Roads and about 8km related storm drainage pipes.

Aug. 8th, 2007 Aug. 10th, 2007

Aug. 12th, 2007

www.bengbu.gov.cn

Huaiyuan County Library

8 EIA Report for Wuhe County Mohekou Integrated Environment Improvement Project

- Sanpu Storm Drainage PS and related projects: 50 m3/s

- Water supply project: a 30,000m3/d WTP, 17km treated water transmission pipe and about 20km water distribution network

- Wastewater treatment project: a 20,000m3/d WWTP, about 21km sewage network

- Storm drainage network: about 17km

- Road project: about 13km

Aug. 8th, 2007 Aug. 10th, 2007

Aug. 12th, 2007

www.bengbu.gov.cn

Wuhe County Library

9 Consolidated EIA (C) All the eight sub-projects Aug.8th, 2007 Aug.10th, 2007 Bengbu Daily (Newspaper)The libraries of Bengbu Municipality and three counties

10 Consolidated EMP(C) All the eight sub-projects Aug.8th, 2007 Aug.10th, 2007 Bengbu Daily (Newspaper)The libraries of Bengbu Municipality and three counties

11 Consolidated EIA (E) All the eight sub-projects Aug. 10th, 2007

Aug. 12th, 2007 World Bank InfoShop

12 Consolidated EMP(E) All the eight sub-projects Aug. 10th, 2007

Aug. 12th, 2007 World Bank InfoShop














Date of Disclosure

Disclosure Location

13 EA summary (E) All the eight sub-projects Aug. 25th, 2007

1.3 Coverage of this Consolidated EAThe Consolidated EA is being prepared strictly in accordance with National and Provincial laws, codes and criteria relating to environmental protection. It satisfies the Chinese EA system, whilst at the same time gives full attention to the requirements of the World Bank’s environmental safeguards, and more precisely those of the Operational Policy 4.01 for EA.The CEA is based on the collection and use of existing materials (secondary data) as well as data resulting from field investigations carried out during the preparation of Individual EAs for each sub-project. The CEA intends to provide a comprehensive and synthesized view of environmental implications resulting from the implementation of the 8 sub-projects.

1.4 Layout of the Consolidated EA ReportThe following chapters of the CEA report present the detailed analyses conducted as part of the overall Environmental Assessment and follows closely the report format recommended in WB OP 4.01/Appendix B:• Chapter 2 "Institutional and Regulatory Framework" discusses the policy, legal,

institutional and administrative framework within which the EA has been conducted describing both the environmental requirements of the PRC and of the World Bank;

• Chapter 3 "Environmental Policy Framework" describes the key environmental issues observed at basin level and in the project area with on-going sector policies;

• Chapter 4 "Environmental Baseline Situation" describes the background environmental and social conditions (physical, biological and socio-economic conditions) within which the project components are developed, both on a regional scale and on a site specific level;

• Chapter 5 "Project Description" provides a summary technical presentation of the proposed subcomponents along with their implementation schedule and costs;

• Chapter 6 "Environmental Impacts Assessment" provides prediction and assessment of likely environmental, economic and social impacts, both positive and negative, for the proposed BIEIP project;

• Chapter 7 "Mitigation Measures" describes the recommended mitigation measures during project construction and operation;

• Chapter 8 "Alternatives Analysis" compares feasible alternatives to the proposed project components, including the “zero-project” scenario;

• Chapter 9 "Public Consultation & Information Disclosure" describes the activities and results of Public Consultation and information disclosure;

• Chapter 10 "Summary of EMPs" provides information on the Environmental Management Plans covering mitigation measures, monitoring and institutional strengthening as well as activities and budget developed for each concerned district/county;

• Chapter 11 "Resettlement and Social Impacts" summarizes the main conclusions of individual RAPs for BIEIP components and the consolidated social assessment report for BIEIP;




• Chapter 12 "Conclusions and Recommendations" provides major findings of the study, including short and long term benefit of the Project.




2 Institutional & Regulatory Framework

2.1 Environmental Institutions and RolesThe State Environmental Protection Administration (SEPA): Since March 1998, SEPA has become a ministerial-level authority directly under the State Council responsible for the environmental protection in China. SEPA is responsible for the drafting and interpretation of pertinent standards, laws and regulations and guidelines, as well as the supervision and inspection of their implementation. As stipulated by the “Provision for Management of Environmental Protection in Construction Projects”, since the year 2003, Classed reviews and approvals of construction project EIA documents have been exercised by the Environmental Protection Bureaus (EPBs) at all levels.For projects invested with budget funds from the central government and designated as budgetary investment projects, projects dedicated with special funds, nuclear projects, top-confidential projects and project of military industry, as well as cross-region or cross-river basins, the EIA documentation should be reviewed and approved by SEPA. For projects only requiring EIA reporting sheet and EI registration table, the EIA documentation will be reviewed and approved, under the authority of SEPA, by the EPB institutions of the provinces, autonomous regions or municipalities where the construction projects are to be implemented.The Provincial Environmental Protection Bureau (Provincial EPB): The Provincial Environmental Protection Bureau (EPB) is responsible for environmental planning, monitoring and regulation. The principal duties of the Provincial Environmental Protection Bureau are to frame local legislation and standards, to supervise and administer the control of industrial pollution, to set tariffs for effluents, to study and monitor pollution and to plan for pollution control and environmental management. The EPB manage revolving loan funds (funded by a major portion of polluter fines for non-standard discharges).The Municipal Environmental Protection Bureau (Municipal EPB): The main responsibilities of the municipal EPB include: Implementing the national and provincial policies, laws, rules and standards on

environment protection; Making plans on municipal environment protection: participating in the

establishment of municipal economic and social development middle-term and long-term plans; managing the work of municipal environmental statistic and information; publishing the report of municipal environment status;

Environment protection of atmosphere, water body, soil in the city: supervising the prevention and treatment of polluters such as wastewater, waste gas, noise, solid wastes, poisonous chemical products, nuclear radiation, radiant products and motor vehicles; investigating and treating the environment pollution accidents and mitigating the pollution plumes;

Approving the environmental impact assessment report of construction project; supervising the disposal of municipal pollution sources;

Supervising and managing the construction and protection of municipal natural ecologic environment; supervising the protection of biodiversity, wild animals and plants and wetland;

Communication and education on environment protection; popularizing the scientific and law knowledge of environment.




Bengbu Municipal Environmental Protection Bureau exerts Leadership on the EPBs of the district/counties involved in BIEIP. According to the Chinese regulations, the individual EIAs for the sub-projects under BIEIP will be reviewed and approved by Anhui Provincial EPB and Bengbu Municipal EPB according to their different cost estimation.

2.2 Applicable Laws & Regulations

2.2.1 National Laws & Regulations

Since 2002, the EIA process in China is under the Environmental Impact Assessment Law (October 2002). Several other national laws and regulations provide a legal background for EIA: Environmental Protection Law of the People’s Republic of China, Dec. 1989; Law of Water Pollution Control of the People’s Republic of China, May 1996; Law of Air Pollution Control of the People’s Republic of China, April 2000; Law of Environmental Noise Pollution Control of the People’s Republic of China, Oct.

1996; Law of Water of the People’s Republic of China, Oct. 2002; Law of Cleaner Production Promotion of the People’s Republic of China, June 2002; Law of Water and Soil Conservation of the People’s Republic of China, June 1991; Law of Solid Waste Pollution Control of the People’s Republic of China, April 2005; Detailed Rules for Implementation of “Law of Water Pollution Control of the People’s

Republic of China”, No. 284 order by the State Council, March 2003; Regulation of River Administration of the People’s Republic of China, June 1988; Related Regulations on the Management of Construction Project within River

Administration Scope, April 1992; Regulation on the Environmental Protection Management of Construction Projects,

State Council, 1986; Regulation on Pollution Prevention Administration for Drinking Water Source

Protection Areas, SEPA, July 1989; Protection Program for National Ecological Environment, GUOFA[2000]No.38, State

Council, Nov.2000; Environmental Protection Management for Construction Projects, State Council,

November 1998; Regulations on the Certificate for the EIA of Construction Projects (1989 SEPA); Categorized Checklist for Environmental Protection Management of Projects under

Construction, [2003] File No. 14, SEPA; Comments on Further Strengthening of Environmental Protection Management of

Projects, HUANFA [2001] File No. 19, SEPA; Notice to Strengthen the Ecological Protection of Wetland, HUANRAN[1994] No.184,

SEPA, March 1997; Notice to Strengthening EIA Management of Projects Financed with Loans from

International Financing Institutions, HUANJIAN [1993] File No. 324, SEPA; Notice on the Strengthening of Water Saving and Water Pollution Prevention for

Urban Water Supply by the State Council, GUOFA[2000] No.36, Nov. 2000;




Notice to Issuance of Total Pollutant Effluent/Emission Amount Control Plans in the 10th Five-year Plan Period, YUFUFA [2001] File No. 556;

Notice on the Strengthening of EIAs for Development Zones, HUANFA [2002] File No. 174, SEPA;

Notice on the Further Standardization of Environmental Impact Assessment, HUANFA[2002] No.88, July 2002, SEPA;

Checklist of Hazardous Wastes; Methods for Environmental Protection Acceptance of Projects at Completion, [2001]

File No. 13, SEPA; Technical Directives for Environmental Impact Assessment, General (HJ/T 2.1-93),

SEPA; Technical Directives for Environmental Impact Assessment, Air Environment (HJ/T

2.2-93), SEPA; Technical Directives for Environmental Impact Assessment, Surface Water

Environment (HJ/T 2.3-93), SEPA; Technical Directives for Environmental Impact Assessment, Noise Environment (HJ/T

2.4-1995), SEPA; Technical Directives for Environmental Impact Assessment, Non-pollution, Ecological

Impacts (HJ/T 19-1997), SEPA; Technical Directives for Environmental Impact Assessment, Water Conservancy and

Hydropower Projects (HJ/T88-2003); Technical Directives for Environmental Risk Assessment for Construction Projects

(HJ/T169-2004), SEPA; Decision of the State Council on Implementing Scientific Development Concept and

Strengthening Environmental Protection, GUOFA[2005]No.39, Dec. 2005; Draft Regulation on Public Participation Methods for Environmental Impact

Assessment; 18 March 2006, SEPA;

2.2.2 Local Regulations

There are also some local (Provincial & River Basin-wide) regulations applicable to the environmental impact assessment for BIEIP: Comments on the Implementation of “Decision of the State Council on

Implementing Scientific Development Concept and Strengthening Environmental Protection” by Anhui Provincial Government;

Environmental Rules for Urban Drinking Water Sources in Anhui Province Implementation Method for “Regulation of River Administration of the People’s

Republic of China”, Oct. 1991; Rules on the Water Pollution Control of Huai River Basin in Anhui Province, Sep.

1993; Provisional Regulations on Water Pollution Control of Huai River Basin, No.183 order

by the State Council, Aug.1995; Decision of Anhui Provincial Government on Practically Strengthening the

Environmental Protection Work, WANZHENG (1997) No. 28, by Anhui Provincial Government;

Rules on the Protection of Agricultural Ecological Environment in Anhui Province, Aug. 1999;




Some Comments on Further Improving the Quality of Environmental Protection Assessment, HUANJIAN (2002) No.46, Anhui Provincial EPB, April 2002;

2.3 Environmental Quality StandardsAll applicable standards are detailed in Appendix 2 of this report. Only references and general issues are provided in this section.

2.3.1 Surface Water Quality Classification and Standards

National standards for surface water quality are detailed in regulation GB3838-1983, successively revised in 1988 (GB3838-1988) and in 2002 (GB3838-2002). Surface water bodies are ranked into five quality classes according to their utilization purposes and subsequent protection objectives, as defined in a regional zone classification issued by the Municipal EPB: Class I is mainly applicable to spring water and to national nature reserves. Class II is mainly applicable to first class of protected areas for main sources of

drinking water, for the protection areas of rare fish species, and for spawning grounds for fish and shrimp.

Class III is mainly applicable to second class of protected areas for main sources of drinking water, and to protected areas for the common fish and for swimming areas.

Class IV is mainly applicable to the water for industrial use and entertainment which has no direct contact with human body.

Class V is mainly applicable to water bodies for agricultural use and landscape requirement.

Chemical criteria applicable to these 5 classes are detailed in Appendix 2.

2.3.2 Other Water Quality Standards

Standard for drinking water is provided by regulation GJ3020-1993; Groundwater Quality Standards GB/T14848-1993.

2.3.3 Standards for Effluents from Industry and from WWTP

Key standards include: Comprehensive Standard for Wastewater Discharge (GB8978 – 1996); Quality of Sewage Water Discharged into Urban Sewers (CJ3082－1999); Standard for Pollutants Discharged from Urban and Town Sewage Treatment Plants

(GB18918－2002); GB 4284-1984 is used as the control standard for pollutants in sludge for

agricultural use.

2.3.4 Standards for Solid Waste Management

Key standards include: Urban Municipal Solid Waste Technical Standard 1989, Ministry of Construction;




Ordinance of Urban Appearance and Environmental Sanitation Management, adopted by the State Council, August 1992;

The Technical Policies for Municipal Solid Waste Treatment and Pollution Prevention, promulgated by MOC, MST and SEPA, May 29, 2000.

2.3.5 Other Regulations & Standards

Several other standards related to air quality and noise should apply either during the construction or operation phases of BIEIP, including: Environmental Air Quality Standard (GB3095—1996) with regulation GB3095-96 for

fluoride and standard for maximum concentration of chlorine from Industry Designing Sanitary Standards (TJ36-1979).

Standards for the Protection of Crops (GB9173—88) set the maximum concentration of some air pollutants in order to preserve the safe consumption of crops.

Class II standard of Urban Area Environmental Noise Standards GB3096-1995, which applies to residential, commercial and industrial mixed area.

Urban Area Environmental Vibration Standards GB10070-88, which apply to mixed area and commercial centre area, day 75dB (A), night 72dB (A).

Comprehensive Emission Standards of Air Pollutant (GB16297-1996) for exhaust gas;

Limiting Values for Construction Area (GB12523—90) for noise from construction activities.

2.4 World Bank SafeguardsFor any project processed with the participation of an International Funding Agency, in addition to the fulfillment of national requirements, the proponent must also satisfy the requirements of the funding organization. The World Bank requires environmental assessment (EA) of projects proposed for financing to ensure that they are designed in an environmentally sound and sustainable manner, and that the environmental and social policies of the WB are satisfied. These requirements are detailed in the following reference safeguards:Environmental Issues Safeguards: Operational Policy 4.01, Environmental Assessment, January 1999 (including Annex

A, B and C, dated January 1999) Operational Policy 4.04, Natural Habitats, June 2001 Operational Policy 4.36, Forests, September 1993 (including Annex A, dated March

1993) Operational policy 4.09, Pest Management, December 1998 Operational Policy 4.37, Safety of Dams, October 2001

Social & Political Issues Safeguards Operational Policy 4.12, Involuntary Resettlement, December 2001 Operational Directive 4.20, Indigenous Peoples, September 1991 Operational Policy 4.11, Cultural Property, August 1999 Operational Policy 7.50, Projects on International Waterways, June 2001 Operational Policy 7.60, Projects in Disputed Areas, June 2001




Bank Policy 15.50, related to Information DisclosureFor the present BIEIP project, the following safeguards will be triggered: Operational Policy 4.01, Environmental Assessment Operational Policy 4.12, Involuntary Resettlement, Bank Policy 15.50, related to Information Disclosure.




3 Environmental Policy Framework

3.1 Main Environmental Issues and Strategies in Huai River Basin

3.1.1 Water Pollution

The water pollution of Huai River Basin started in the late 1970’s and exacerbated in 1980’s. The large-scale water pollution accidents took place more and more frequently in Huai River Basin in recent decades, respectively in 1989, 1992, 1994 and 1995.Thereafter, relevant pollution control strategies and policies have been successively issued by the State Council and local governments to alleviate the conditions, such as the “Provisional Regulations on Water Pollution Control of Huai River Basin” (Aug. 8th 1995, the first river basin water pollution control regulation in China), the “Water Pollution Control Plan and the Ninth-five-year plan of Huai River Basin” (Jun. 29th 1996) and the “Tenth-five-year Plan for Water Pollution Control of Huai River Basin”. The water pollution targets for the whole Huai River Basin are divided into two phases: the first is to make the discharge from all the industrial polluters in the basin up to standard and to reduce the COD discharge from 1.5million tons of 1993 to 890,000 tons by the end of 1997; and the second is to construct 52 municipal WWTPs for the whole basin and to further reduce the COD discharge to 368,000 tons so as to improve the water quality of the main stream of Huai River, upstream of Yi River and key drinking water sources up to the Class III standard and that of other rivers up to the Class IV standard.With the great efforts put in Huai River Basin (including the compulsory shutdown of hundreds of heavily polluting small industries and the administration over the key industrial polluters in the basin), significant accomplishments have been made over the last 12 years. Especially during the “Ninth-five-year” period (1996-2000), the key pollutant, COD discharge, has dropped from the 1.5million tons of 1995 to 1.167million tons of 1998 and 0.94million tons of 2000 (respectively by 22.2% and 36.9%); in 2000, the water quality compliant rate at the provincial boundary has increased by 8.8% compared with the 1995 level; and there is significant decrease of major water pollution accidents in the basin. However, after 2001, with the completion of the first phase Huai River pollution control action, the pollutant discharge into the river increased again in recent years. In 2003, the COD discharged into the river was up to 1.23million tons, 30% beyond the 2000 level. The water quality compliant rate at the provincial boundary showed a gradually decreasing trend, from the 29.1% of 2000 to the 25.8% of 2001 and the 24.6% of 2002. Even with the dilution of the biggest flood in 50 years, the overall water quality compliant rate of 2003 was only 38.4%. 82 of the key controlled cross sections are classified as Class V or worse than Class V, and about 82% of the cross sections haven’t reached the predefined target. The existing problems mainly include: 1. The incompliant pollution discharge by key industrial polluters remains the major

cause for the pollution exacerbation. By the end of 2003, only 51.7% of the industrial outfalls could meet the discharge requirements. And the industrial pollution contributes to about 70% of the total COD discharge in the river basin.

2. The construction of many planned municipal WWTPs is behind schedule, and the normal operation of constructed WWTPs could not be ensured.

3. The agricultural non-point pollution hasn’t been effectively controlled, so that the NH3-N concentration is far beyond the standard requirement.




4. The ecological water use has been seriously taken into consideration in the exploitation and allocation of water resource. Therefore, during the dry season, some rivers are dried up, and the self-purification capacity of the water bodies will be affected.

In view of the above mentioned problems, in Oct. 2005, SEPA has issued the new water pollution control targets for Huai River Basin with the focus on the control and treatment of industrial and domestic wastewater from the urban area. The targets are further divided into three phases: a) By the end of 2005, the completion and operation rate of key pollution control projects should be no lower than 60%; b) By the end of 2007, 90% of the key pollution control projects should be put into operation, and the treatment rate of domestic wastewater from the municipalities in Shandong, Jiangsu Provinces, etc. should at least reach 70%; c) By the end of 2010, the water quality of the main stream of Huai River should reach the Class III target, and the water quality of the major tributaries of Huai River should meet the Class IV or Class V requirements.

3.1.2 Water Scarcity

Due to the spatio-temporal imbalance of water resource distribution, the Huai River Basin is an area facing the problem of severe water shortage with the per-capita water resource amount of 488m3, which is lower than 1/4 of the nationally average level. According to the “Water Resource Development ’Ninth-five-year’ plan for the Huai River Plan”, with the construction of proposed water supply projects, by 2000 for the normal year, the water supply of the Huai River Basin is basically sufficient; However, for the moderately dry year, there is still a gap of 8.38billion m3 water demand in the Huai River Basin, which means 10% water deficiency rate; and for the very dry year, the gap of water demand would be 24.27billion m3, which means 26% water demand deficiency. In 95% of the very dry years, the guarantee rate of agricultural irrigation water supply would not be reached. In such years, the adopted strategies are to minimize the agricultural water use, to save other water uses, and to properly increase he groundwater use for the area north of the Huai River (Wangjiaba~Bengbu) and the area west of the Nansi Lake. In addition to the optimization of water resource management in the basin, the cross-basin water transfer is a possible solution to mitigate the water supply shortage of the Huai River Basin in view of its vicinity to the Yellow River and the Yangtze River. By 2010, it is expected that the water shortage of the Huai River Basin would still be of water resource type. However, the construction of the eastern and middle sections of “South-north water transfer project” and the cross-basin water transfer project of Anhui Province will significantly alleviate the water shortage in Huai River Basin, so that in the normal year, the water supply will be generally sufficient. At the same time, the area north of the Huai River upstream of Wangjiaba, the area between Wangjiaba and Bengbu, and the eastern area of Nansi Lake will remain a water deficiency rate beyond 20%. For these areas, it is proposed to strictly control the development of the industries with high water consumption, promote the water conservancy, and properly increase the cross-basin water transfer and the utilization of sea water.

3.2 Relevant Plannings of Bengbu Municipality

3.2.1 Bengbu Municipal Urban Short-term Construction Plan

This short-term plan is prepared for the Bengbu urban area, the Tushan Mount Scenic Area and part of the Mohekou Industrial Park, covering a total area of 680km2 by 2010.

3.2.1.1 General Objectives




The following objectives are expected to be achieved by 2010: Construct 140km new roads, and the per-capita road area reaches 10.2m2; The per-capita public greening area is about 7m2, and the greening coverage rate of

the constructed area reaches 30.3%; The urban water supply capacity is up to 560000m3/d, the per-capita water

consumption is 220l/d, and the coverage rate of water supply service is beyond 99%; The urban centralized wastewater treatment capacity reaches 275000m3/d, the

centralized wastewater treatment rate is 73.3% and the harmless treatment rate of solid waste reaches 90%;

The water quality compliant rate of rivers and lakes is over 70%, and the water quality compliant rate of urban water supply source is beyond 95%;

The flood control capability of the North Huai River dyke and the urban area is up to the one in 100 years standard.

3.2.1.2 Relocation of Industries and Construction of Industrial ParksIn order to adapt to the overall development master plan, it is planned to gradually move some existing polluting industries from the old urban area and the suburban area into the new industrial parks. Movement and relocation of industriesThe existing industries planned to be moved and relocated include Anhui Global Pharmaceutical Company, People Printing Plant, Bengbu Tiancheng Co. Ltd., the cement plant, the cement product plant, Chemical Mechanical Manufacture Company, Longhua Machines Plant, the glass plant, Xinfeng Flour Plant, the electronic optical material plant, Bayi Chemical Co. Ltd., Hailuo Cement Company, Xinmin Glass Co. Ltd., etc. Newly increased industrial land useThe new industrial parks are showed in the following table.

Table 3: New industrial parks

No.

Name Area (ha)

Location Major Industries Involved

1 West City Industrial Park & Gaoxin District

546 automobile parts, electronic information, biochemical and new materials

2 Bengbu Industrial Park 451 Huaishang District mechanical manufacture, automobile fittings, textile & garments, and food processing

3 Longzi Lake Glass Industrial Park & Changhuai Industrial Park

158 glass and glass further processing, cement industry and metallurgy industry

4 Jiangqiao Logistics Processing Zone

115 Bengshan District and Xincheng District

electronic information and urban industries

3.2.1.3 Environmental Protection Plan Water— By 2010, the water quality of the main Huai River should reach the standard

of Class III or above, and the water quality of the tributaries should reach the standard of Class IV or above. The treatment rate of industrial wastewater should be 100% and the treatment rate of domestic wastewater should reach 73%;




Air— The air pollution index for the urban area should be controlled within the Class II ambient air standard, the yearly average of TSP in the air should be no more than 0.2mg/m3, the yearly average of SO2 concentration should be within 0.02mg/m3, and the yearly average of NO2 should be lower than 0.025mg/m3. The treatment rate of industrial waste gas should be 100%, and the treatment rate of vehicle exhaust gas should be 80%;

Noise— The ambient noise of the urban area should be controlled within 56dB, the noise of the urban traffic trunks should be within 68dB, and the compliant rate of the ambient noise in the urban area should reach 50%;

Solid waste— Almost all the solid waste should be collected and sorted, the harmless treatment rate of solid waste should reach 90%; The night soil treatment should be integrated into the urban wastewater treatment system. 100% of the urban domestic solid waste should be containerized for collection. The treatment of hazardous waste should be strengthened, and Zero-discharge of hazardous waste should be ensured.

3.2.2 Bengbu Municipal Wastewater & Storm Drainage Master Plan

As an old industrial city, the drainage system of Bengbu Municipality is constructed and connected by catchments and by phase.

3.2.2.1 Bengbu Municipal Wastewater Drainage Master PlanAccording to the wastewater drainage master plan, it is projected that the wastewater generation of Bengbu Municipality will respectively reach 494,100m3/d and 728,300m3/d by 2010 and 2020.Table 4: Bengbu Municipality Estimated Wastewater Amount（10,000 m3/d）

Item

Current Situation 2010 2020

South

of Huai

River

North

of Huai

RiverTotal

South

of Huai

River

North

of Huai

RiverTotal

South

of Huai

River

North

of Huai

RiverTotal

Planned

Wastewater

Amount (m3)

31.1 0.45 31.55 43.65 5.76 49.41 61.31 11.52 72.83

Wastewater

Treatment

Percentage (%)

32.2 0 31.7 74.5 86.8 75.9 89.7 86.8 89.3

Wastewater

Treatment

Capacity (m3/d)

10 0 10 32.5 5 37.5 55 10 65

Bengbu urban area is proposed to be divided into four wastewater catchments as shown in Figure 6, which are respectively served by four municipal WWTPs. The catchment division and the related information are detailed in Table 5.




Figure 6: Overview of Bengbu Urban Wastewater and Storm Drainage Plan




Table 5: Planned Wastewater Drainage System

Name of Wastewater Subcatchme

nt

Type of Drainag

e System

Planned Catchment

Scope

Served Area (ha)

Name of Corresponding WWTP

Treatment

Capacity (m3/d)

Discharge Outlet

Xijiagou Wastewater Catchment

Mixture of

Combined &

Separate systems

East of Heihushan Rd.; west of Laohu

Mountain-Hangxing Road-Fenyong Street-

Shengping Street; north of Yanshan Rd.; south of Huai

River

2025

Xijiagou WWTP (No.1

WWTP, in operation)

Phase 1: 100,000;

Phase 2: 100,000

Xijiagou Canal

and then Huai River

Yangtaizi Wastewater Catchment

Mixture of

Combined &

Separate systems

East of Laohu Mount-Hangxing Rd-Fenyong St-Shengping St; west of Longzi Lake, South of Huai River and North of No.5 Huochang Rd

East of Longzi Lake, west of Zhuizi Mount

4251

Yangtaizi WWTP (No.2

WWTP, in design)

Phase 1: 100,000;

Phase 2: 100,000

Baojiagou Canal

and then Huai River

South City Wastewater Catchment

Separate system

Baligou Subcatchment, West Yanshan Subcatchment,

and East Yanshan Subcatchment

2482

South City WWTP (No.4

WWTP, under

planning, to be

completed by 2012)

155000Huai River

Huaishang Wastewater

Separate The whole Huaishang District

1950 Huaishang WWTP (No.3

Phase 1: Huai




Catchment system

including Xiaobengbu area, Wuxiaojie area, the middle area and North River Industrial Park

WWTP, under

construction, Phase 1 to

be completed

by Jun.2008)

25000;

Phase 2: 50000;

Phase 3: 80000

River

3.2.2.2 Bengbu Municipal Storm Drainage Master Plan

Bengbu urban area is divided into six storm drainage areas according to the receiving water body and the drainage approach, which include the South River Pumping-drainage Area, Longzi Lake Drainage Area, Xijiagou Drainage Area, Baligou Drainage Area, Baojiagou Drainage Area and North River Drainage Area. These drainage areas are further divided into 27 drainage systems in urban planning area according to the topographic characters. The total area of storm water catchments included in the urban drainage system is up to 175km2, and the accumulated design flow is 775m3/s. The storm water excluded in the urban drainage system is discharged along the existing ditches and canals. See Table 6 for details.

Table 6: Planning of Storm Drainage Catchments in Bengbu Urban Area

No.Name of

Drainage Area

Catchment Area (km2) Accumulated

Design

Flow（m3/s）Drainage

Approach

Receiving

Water Body Total Area Planned

Area

1

South River

Pumping-

drainage Area

20.9 20.9 119.12

Pumped in

the flooding

season

Huai River,

Xijiagou Canal

2Longzi Lake

Drainage Area140 48.76 256.5 Free Flow Longzi Lake

3Xijiagou Drainage

Area49.6 24.49 132.5 Free Flow Xijiagou Canal

4Baligou Drainage

Area23 11.24 81.6 Free Flow Baligou Canal

5Baojiagou

Drainage Area35.4 12.26 54.6 Free Flow

Baojiagou

Ditch

6 North River

Drainage Area

45.7 25.74 130.4 Pumped in

the flooding

Huai River




season

3.2.3 Bengbu Municipal “Eleventh-five-year” Environmental Protection Objectives

The Bengbu Eleventh-five-year Environmental Protection Master Plan is prepared for 2010. The whole Bengbu Municipality is covered by this plan. The major task of the “Eleventh-five-year” environmental protection is to control the deterioration of water environment and to further reduce the total pollutant discharge of industrial wastewater, domestic wastewater and agricultural non-point pollution. The detailed targets are summarized as follows:

Water

- Ensure the up-to-standard water quality of drinking water sources: Strengthen the construction of drinking water source conservation areas, such as the area for the No.3 WTP, and improve the water quality compliant rate of the centralized drinking water sources above 95%;

- Accelerate the construction of wastewater treatment facilities – By 2010, the newly increased wastewater treatment capacity should reach 290,000m3/d, which will made the overall treatment capacity up to 545,000m3/d and the treatment rate up to 70%.The sewage from the new planned area should be collected and transferred to the WWTP. And the treated effluent of the WWTPs should comply with the Class 1A standard before discharging into the Class III surface water bodies (according to the classification of GB3838-2002). The water quality of the main Huai River should at least meet the Class III standard while the primary tributaries should at least meet the Class IV standard;

- Strengthen the control of industrial polluters—Implement strict inspection and administration regulation over the polluting industries, such as chemical, brewery, textile & dyeing, tannery, plating, paper-making and food processing; Implement the overall on-line monitoring system for the new urban WWTPs, solid waste incinerators and key industrial polluters to effectively prevent the secrete discharge; Implement the mass load control system for pollutant discharge, the pollutant discharge permission system and the reduction plan for the total discharge of major pollutants;

- Control the pollution from the poultry and stockbreeding industries;

- Comprehensively control the agricultural non-point pollution by strictly control the use of pesticides and fertilizers.

Air

- Strengthen the treatment of industrial pollution to realize the up-to-standard emission of polluting sources;




- Strengthen the administrative control over the exhaust gas emission of vehicles;

- Focus on the control over the domestic polluting sources and the flying dust from traffic and construction activities.

Noise

- Control the regional environmental noise to improve the coverage rate of noise up-to-standard area up to 60% as soon as possible;

- Control the traffic noise—Control the average value of the noise from the traffic trunks within 70dB;

- Control the noise of construction activities;

- Take proper measure to cope with the fixed noise sources.

Solid waste

- Accelerate the construction of solid waste treatment & disposal projects—six new solid waste treatment plants (sites) and one medical waste disposal centre are planned for the horizon of 2010. By 2010, it is expected that the harmless treatment rate of the domestic solid waste in Bengbu Municipality will reach 60%, and the centralized treatment rate of hazardous waste will reach 100%;

- Strengthen the comprehensive recycling and utilization of solid waste—By 2010, the comprehensive utilization rate of industrial solid waste should reach 85%;

- Strengthen the management of hazardous waste— A 5t/d medical waste disposal centre will be constructed. By 2010, there should be no discharge of hazardous waste;

- Complete the collection and transportation system for construction waste and solid waste from water bodies.

Ecological Environment

- Enhance the ecological construction—By 2010, improve the forest coverage rate in the municipality to 18% and the greening rate of constructed area to 40%, and increase the per-capita public greening area in the urban area up to 9m2;

- Well protect the ecological functional zones—By 2010, the area of land natural conservation zones reaches 12% of the total area;

- Implement compulsory protection for resource development.

Circular Economy

- Construct ecological industrial parks— Focus on the construction of 9 ecological industrial parks. By 2007 the small- and middle-scale polluting industries should be relocated, and by 2010 all the polluting industries should be moved into the industrial parks;




- Develop the ecological agricultural parks;

- Construct the resource circular economy by establishing the recycling and reuse system for urban domestic solid waste, special used materials and urban treated wastewater together with the regional industrial hazardous waste incineration centre, the used batteries and fluorescent lamp tube disposal centre, the medical waste disposal centre, etc;

In order to achieve all the above targets by 2010, totally 80 environmental protection projects have also been identified in the master plan, such as:

- Drinking water source pollution control project for three counties;

- Wetland ecological environmental construction project for the groundwater conservation area in Huaishang District;

- Water quality protection project for Qian River as strategic urban water supply source;

- Longzi Lake integrated rehabilitation project

- Zhangongshan Pond integrated rehabilitation project

- Wastewater treatment projects for some key polluter of Bengbu Municipality;

- Relocation of some key polluters of Bengbu;

- Wastewater treatment plants for Bengbu urban area and three counties;

- Bengbu domestic sanitary solid waste landfill site (Phase I & II);

- Solid waste disposal site for Huaishang District and three counties

- Medical solid waste disposal centre of Bengbu Municipality;

- Sludge disposal project of Bengbu wastewater treatment plants;

- Flood control and ecological environment improvement project for the southern and northern banks of Huai River;

- Environmental monitoring capability building;

- Construction of Bengbu Environmental Information System; etc.

- Many of these projects are being implemented with the government investment. And some of them will be included in BIEIP using the World Bank financing, which include:

- Longzi Lake integrated rehabilitation project;

- Flood control and ecological environment improvement project for the northern banks of Huai River;




- Environmental monitoring capability building; etc.

3.2.4 Bengbu Municipality Eleventh-five-year Plan for Water Resource Development

3.2.4.1 General Objectives

Complete the flood control & storm drainage system --The treatment of such primary mainstream & tributary as Huai river, Guo river, Beifei river & Xie river should be enhance to improve the integrated flood control & storm drainage ability. Meanwhile, to improve the storm drainage capacity and reinforce the flood control & anti- drought emergency system, flood control pumping station in each depression of the five tributaries as Tianhe, Longzi river, Qian river ,Xie river & downstream Beifei River should be considered, while the flood control pumping station improvement projects of Beifei River dike ,Jingshan Lake & Mohekou depression as well as storm drainage ditch treatment projects also need to be implemented

Establish the secure and reliable water supply security system -----Focusing on the current water resources and making full use of the potentiality of water saving and floods to ensure urban water supply safety, then carrying on the construction to protect urban drink water sources like Tianhe Lake and Qian River. Finally, the water resource distribution ability should also be enhanced to improve the rural drink water quality by carrying on drink water safety project in rural area.

Establish sustainable and effective water environmental protection system ------Sticking to combining the engineering measures with non-engineering measures to tap, utilize and protect water resources. Also the soil and water conservation should be activated and the wet land should be taped and protected intentionally, reasonably and step by step.

Establish stable water resource development system in rural area ------To guarantee the agricultural development, stable society and income rise in rural area, the farmland and water resources construction should be continuously strengthened and the drainage situation should be improved.

Establish normalized and effective water management and service system ------The water information collection system and decision-making assistant system should be set up to further improve the emergency schema for flood control and anti-drought.

3.2.4.2 Targets of Water Resource Development




Flood control and storm drainage ------By 2010, the flood control standard for protection area like Huaibei dike and Bengbu urban area will reach 1-in-100 year flood while the flood control standard of major tributaries like Hui river. Xie River, Qian River, Tuo River, downstream Beifei River etc will almost rise to 1-in-20 year flood thus the flood control standard for Bengbu city, Huaiyuan county, Guzhen county and Wuhe county will fundamentally meet the national requirement. Besides the flood disaster warning system ought to be established and the depression storm drainage projects in key region should be built based on 1-in-10 years flood to fully upgrade the drainage capacity.

Drink water safety----The water sources protection project in urban area will be radically finished in 2010.

Country water resources ----During the “the eleventh-five-year plan”, the irrigative land equipping, water-saving rehabilitation and farming land storm drainage system construction will be activated and the surface and ground water will be attributed scientifically and rationally. By 2010, the new drainage area will be 500,000 mu while the improved will be 500,000mu.The standard reclaimed farmland reclaim will attain to 800,000mu with common storm drainage standard of 1 in 5 ~10years flood. By 2020, the reclaimed farmland reclaim will be 2 million mu with a drainage standard of 1 in 10years flood.

Water resources protection and ecological treatment ------By 2010, the water quality up-to-standard rate for the primary rivers and lakes will get to above 70% and the water sources for urban area will go up to above 95%.The treatment projects for Longzi lake and Xijiagou should be launched to ensure the water quality of Longzi lake and Zhanggongshan pond basically meet the water requirement for landscape. By 2020, the water quality up-to-standard rate for the primary rivers and lakes will reach above 90% and the water sources for urban area will go to above 98%.

3.2.5 Construction Plan of Bengbu Ecological City

In order to construct Bengbu Municipality into an ecological city, the following targets have been developed respectively of the short term (2010), intermediate term (2015) and long term (2020) horizons.

Water

- Short term: By 2010, the up-to-standard rate in water functional region will be 75%, industrial wastewater treatment rate will be 98% ， sewage treatment rate will be 70%。




- Intermediate term: By 2015, the up-to-standard rate in water functional region will be 90%; industrial wastewater treatment rate will be 99%，sewage treatment rate will be 80%。

- Long term: By 2020, the up-to-standard rate in water functional region will be 100%, industrial wastewater treatment rate will be 100%， sewage treatment rate will be 90%.

Air

- Short term: By 2010, the urban air environment should be maintained at the same level in 2005 and all the functional regions should meet the air standard.

- Intermediate term: By 2015, the urban air environment quality can be expected at the favorable level with an industrial exhaust treatment rate of 100%.

- Long term: By 2020, the urban air quality can be expected to be upgraded based on the favorable level with an industrial exhaust treatment rate of 100%.

Solid waste

- Short term: By 2010, the integrated utilization rate of urban industrial solid waste will be up to 85% compared with domestic waste harmless dispose of 100%, and utilization of more than 10%.

- Intermediate term: By 2015, the integrated utilization rate of urban industrial solid waste will be up to 100% compared with domestic waste harmless dispose of 100%, classified collection of more than 30% and utilization of more than 15%.

- Long term: By 2020, the integrated utilization rate of urban industrial solid waste will be up to 100% compared with domestic waste harmless dispose of 100%, classified collection of more than 60% and utilization of more than 20%.

3.3 Project Conformity with the Master Plans

The content of the Bengbu integrated environmental treatment project financed by the World Bank loan is determined in line with the overall development plan of Bengbu city, water conservancy development plan and the environmental protection goal in the Eleventh Five-Year Plan period. The conformity for the project contents with the master plans of Bengbu Municipality is shown in the following table.




Table 7 : Conformity of the Proposed Projects with Existing Master Plans

No. Name of

PlansPlanned Objectives Related Sub-projects Contents of Proposed Projects

1

Bengbu Urban

Short-term

Construction

Plan

1 ） Urban construction goal — by 2010, 140km

of new road will be built with per-capita road area

of 10.2m2

Sub-project 3 — Urban environmental infrastructure

improvment

Sub-project 5 — Flood management and storm

drainage and infrastructure improvement in

Huaishang district

Sub-project 7 — Integrated environmental treatment

in Huaiyuan county

- Road building in the Jingfa District

- Construction of riverside road and its branch

road in Huaishang District

- Road building in Chengguan town of

Huaiyuan county

2 ） Safeguard goal of water resources — to set

up the water security system, increase the bearing

capacity of water environment and improve storm

drainage of Tianhe Lake and water environment of

Longzi Lake

Sub-project 1 — Tianhe flood control project

Sub-project 2 — Longzi Lake flood management and

storm drainage and environmental improvement

- Construction of Tianhe storm drainage

station

- Desilting works of Longzi Lake

3) Key environmental improvement area —

Xijiagou

— Zhanggongshan Pond—Yinghe neighboring

area

Sub-project 4 — Xijiagou and Baligou environmental

treatment

- Xijiagou desilting and revetment greening

project

4 ） Industry relocation and park construction

— new industrial land and newly-built industrial

park; construction of industrial park and district

and centralized sewage treatment


in Mohekou of Wuhe county

- Construction of infrastructure, sewage pipe

network and treatment plant in Mohekou

Industry Zone




No. Name of


2 11th-Five-Year

Plan for Water

Conservancy

Development

1 ） Urban flood prevention — construction of

storm drainage PS (reconstruction of

Xinchuantang, Nanshijia and Wuxiaojie PSs ）


improvment


drainage & infrastructure improvement in Huaishang

district

- Wuxiaojie storm drainage PS

- Xinchuantang storm drainage PS

- Nanshijia storm drainage PS

2 ） Internal ditch treatment project for Baligou,

Xijiagou, Longzi Lake and lower reaches of Beifei

river




treatment



- Desilting of Baligou

- Desilting of Xijiagou

- Desilting of Longzi Lake

- Desilting of Sanpu canal

3 ） Promoting urban flood management project

construction in Huaiyuan, Guzhen and Wuhe

counties


in Guzhen county


in Huaiyuan county



- Desilting of ditches and canals and

construction of storm drainage PS in

Guzhen

- Desilting of flood ditches and construction

of storm drainage PS in Huaiyuan

- Construction of storm drainage PS in Sanpu

of Wuhe county




No. Name of


4 ） Conservation of water resources and water

environmental treatment




treatment

- Implementation of Longzi Lake and Xijiagou

integrated treatment project and

improvement of urban water environment

5 ） Key water conservancy project in the 11th

Five-year Plan period — Construction of Tianhe

and Longzi Lake storm drainage stations to

upgrade the flood management standard in Tianhe

depression to once in 20 years and the storm

drainage standard to once in ten years. ,

Sub-project 1 — Tianhe flood management and

storm drainage



- Tianhe storm drainage station

- Longzi Lake storm drainage station

3 Environmental

Protection

Plan for

Bengbu

Municipality for

the 11th-five-

year period

To speed up construction of sewage treatment

facilities — fresh sewage discharged in the

planned area should be collected and directed to

the sewage treatment plant.


improvment


in Guzhen county

- Urban sewage collection pipe network

project

- Construction of sewage closure pipelines in

each part

By 2010, 70% of domestic sewage in Bengbu will

be brought under centralized treatment; the

discharge from the sewage treatment plant should

reach the standard for A, Class I before being

discharged into the functional surface water body

of Class III.



- Sewage treatment plant project in Mohekou

Industry Zone




No. Name of


Intensify control over industrial pollution source

and build up eco-industrial park — advance the

construction of specialized environmental

protection park in the pattern of industry park and

district construction, centralized sewage treatment

and control of the source in combination with

industrial restructuring and all the enterprises are

required to settle in the Park by 2010.



- Construction of environmental infrastructure

in Mohekou Industry Zone

Devote more efforts to eco-improvement — build

more riverside greening belts and forge a urban

green passageway




drainage & infrastructure improvement in Huaishang

district


in Guzhen county

- Longzi Lake slope greening project

- Tree and grass planting around the riverside

road

- Grass revetment on the left dyke of Hui

River




4 Environmental Baseline Situation

In order to get a full understanding of the current environmental quality in the project areas, the following baseline analysis is carried out on the basis of the existing information, the available routine monitoring data and the results from the specific monitoring activities targeted at the proposed project areas, as listed below.

- Collection of the following monitoring data

Air: 1) the 2005 and 2006 routine air monitoring data of the Bengbu urban area for the urban (south of Huai River) project; 2) the historical monitoring data for the area near the Huaishang, Guzhen, Huaiyuan and Wuhe projects sites due to the lack of routine air monitoring point;

Water: 1) the 2005 and 2006 water monitoring data of the routine monitoring cross-sections (Bengbu Gate, Xintieqiao Bridge and Mohekou) for the Bengbu section of the Huai River for the urban (south of Huai River) project; 2) the routine water monitoring data of the Huai River tributaries including Hui River, Guo River and Huaihongxin River for the Guzhen, Huaiyuan and Wuhe projects; 3) the 2005 and 2006 surface water monitoring data for the Bengbu urban area, such as Tianhe Lake, Longzi Lake, Xijiagou Canal, Zhanggongshan Pond and Sanpu Great Ditch, supplemented by the historical monitoring data, the 2005 and 2006 water quality monitoring data for the centralized wastewater outfalls of Bengbu urban area; the wastewater quality monitoring data of the key industrial polluters in Bengbu Municipality as the background information;

Noise: 1) the 2006 noise monitoring data for the Bengbu urban area; 2) the 2006 road traffic noise monitoring and statistic data for the Bengbu urban area;

Other data: 1) the 2006 historical monitoring data for the sediment of Longzi Lake provided by the Municipal EPB; 2) Reference of Anhui Province soil environmental background value; 3) the historical groundwater monitoring data for the Longzi Lake area provided by the Municipal EPB.

- Special Monitoring Work

Noise: Special noise monitoring work has been carried out specifically for the eight sub-projects around the project sites, especially at the sensitive points around the proposed PSs and the construction activities;




Sediment: The sediment monitoring mainly targets at the canals and ponds to be desilted in BIEIP. The sampling points are selected based on the following principles: 1) The canals and ditches with large desilting quantities should be selected for sampling, such as Longzi Lake, Baligou Canal, Sanpu Great Ditch in Wuhe County, and Camel Ridge Pond in Huaiyuan County; 2) The badly polluted canals and ditches in BIEIP desilting projects should be selected for sampling, such as the Ying River Section of Xijiagou Canal, Niushi Alley Pond of Chengguan Township in Guzhen County; 3) Sampling points should be located in the sections receiving the discharge of centralized industial wastewater outfalls, such as the confluent of Mochongyin River and Sanpu Great Ditch in Wuhe County; 4) For the desilting projects for several ponds in the same catchment, on principle one point should be selected for the baseline monitoring, such as the flood discharge ditch in Huaiyuan County, the upstream section of Mochongyin River in Wuhe County, the upstream section of Sanpu Great Ditch and the No.2 ditch in Huaishang District.

The detailed monitoring and sampling points are shown in the maps of Annex 1.

4.1 Topography

The majority of Bengbu Municipality is occupied by plains with relatively centralized hills and many interlaced inland rivers, canals and lakes. The area to the north of Huai River is mostly plain, accounting for about 86% of the whole municipality. To the south of Huai River, there is mainly incontinuous hilly area with some lakes, which accounts for about 9% of the whole municipality. And the water surface accounts for 8% of the whole municipality, including the rivers like Huai River, Guo River, Huaihongxin River and the lakes like Sifang Lake, Tuo Lake and Xiangjian Lake.

4.2 Climate

Bengbu is at the northern edge of North Subtropical Zone and in the humid region of subtropical monsoon climate. As located on the boundary of warm temperate zone and subtropical zone, the area is climatically characterized by long winter and summer, short spring and autumn, concentrated rainfall during the wet season, abundant illumination, rich heat, and long frostless period. In winter, the area is controlled by Siberian High Pressure and dominated by the north-west wind, the climate is dry with little rainfall; however, in summer, the area is influenced by Pacific Subtropical High Pressure and dominated by the south-east wind, the climate is hot and humid with concentrated rainfall.The frequent confrontation of inter-annual cold and warm air mass activities results in the concentrated rainfall. The annual average precipitation is 905.4mm,




and the average frostless period is 217 days. The dominant wind direction in Bengbu for a year is east, NE for the first season, E for the second season, EN for the third season and EN for the forth season. The calm wind frequency for a whole year is 6%, the average wind speed for years is 2.5m/s, and the average wind speed in the flooding season from June to September is 2.3m/s. The maximum wind speed is in June, which is 3.0m/s by average, and the minimum wind speed is in January and August, which is 2.1m/s by average.

4.3 Hydrology

In Bengbu Municipality, there lie many rivers and lakes (as shown in Figure 7), which respectively belong to Huai River water system and Huaihongxin River water system as presented below.

Table 8: Composition of Water Systems in Bengbu

Name of

Water

System

Catchment

Area

(km2)

Names of Key RiversNames of Key

Lakes

Name of Key Low-

lying Areas

Main stream

of Huai

River

2120

Huai River

To the left of Huai River: Nihei

River, Qianhuaixin River, Qian

River, Guo River;

To the right of Huai River:

Dushan River, Tianhe, Baligou

Canal, Xijiagou Canal and

Longzi River

Qianhewa Lake,

Tianhewa Lake

and Longzi Lake

Tangyu Lake,

Jingshan Lake,

Kongjin Lake,

Fangqiu Lake,

Xiangfu Section,

Linbei Section,

Sanchong Lake,

Sanpu Lake,

Huayuan Lake

Huaihongxi

n River3832

Huaihongxin River, Middle-

stream and downstream of

Beifei River, Xie River, Baohui

River and Tuo River

Sifang Lake,

Xiehewa Lake,

Xiangjian Lake,

Zhangjia Lake,

Tuo Lake,

Tianjing Lake,

Diaoyutai Lake,

Sancha River

Huajiagoul,

Liancheng,

Jiuwan, Heinigou,

Malagou, Longtan

Lake

The average runoff depth in Bengbu Municipality is 246.4mm, and the corresponding runoff quantity is 1.5billion m3. The average flow of Huai River is 841m3/s with the annual passing runoff quantity of 26.5billion m3. More than 60 rivers and lakes cover a water surface area around 400km2 with the water storage




of 769million m3. The section of Huai River within Bengbu Municipality is 147km with the width between 600-800m and the bottom elevation around 8m (Yellow River elevation system). Bengbu section is in the lower section of the middle-stream Huai River, which is featured by its smallest riverbed elevation difference, only 5% of the total difference of the river. However, 90% of the riverbed elevation difference is concentrated in the upper stream section. The significant difference has resulted in the frequent floods in the middle stream due to large amounts of flood discharge from upstream during the flooding season every year.

The catchment area controlled by the Bengbu Section of Huai River main stream (Upstream of Bengbu Gate) is 121,000km2, accounting for 64.7% of the total catchment of Huai River. The measurement by Bengbu Hydrology Station shows that the average annual flow here is 26.7billion m3 with the maximum of 63.7billion m3 (in the year of 1954) and the minimum of 2.7billion m3 (in 1978). The highest flood level of typical flooding years happened in 1954, which is 22.18m, while the lowest flood level of Huai River Bengbu Section is 10.36m (December 1966). On a yearly basis, the highest water level normally happens in July, which is 15.52m by average; and the lowest water level happens in January, which is 12.77m by average.




Figure 7: Aquatic Systems in Bengbu Municipality




With the completion of the Bengbu Gate, the hydrological characteristics upstream and downstream of the gate have dramatically changed. The upstream water level is normally between 17-18m, while the normal downstream water level is around 13m, which means there is about 4-5m water head difference. Therefore, the regulation of Bengbu Gate has made the flow of Huai River in this section change from smooth flow to stagnant flow. The upstream stagnant section becomes the surface water recharging the groundwater throughout the year, while the downstream section is recharged by the groundwater.

4.4 GeologyBengbu is in the North China Strata Region, where Lower Proterozoic Wuhe Group Xigu Stratum and Neo-archean Quaternary are growing. Tectonic unit belongs to Sino-Korean Paroplatform, its scale includes Huai River basin and Jianghuai Area. It is only a south-eastern corner of the platform and belongs to the Grade I structural unit. The unit is divided into several secondary units, in which Bengbu is on the Bengbu platform arch of the Grade III unit. The stratum is the Huai River division of North China Strata Region, in which the Middle and Late Paleozoic Stratums are missing. Strata before Early Paleozoic are mainly composed of the metamophic rock and marine strata, and the Strata of Mesozoic Era and Cenozoic Era are mainly composed of terrestrial strata and volcanic rock.

4.5 Soil and VegetationThere are many types of soil in the municipality. The classification system of the “5 categories taxonomy” is used: soil order, soil great group, soil subgroup, soil genus and soil species. In the whole city, there are 5 soil orders, 8 soil great groups, 13 soil subgroups, 31 soil genuses and 62 soil species. Bengbu is in the transitional area between North Subtropical Zone and South Warm Temperate Zone, across two bioclimatic zones. The topography and geomorphology is complex, so the soil types and distribution are transitional. There is no high mountainous area in the city, so there is no evident rule of vertical spectrum mountainous soil distribution. Although the transitional soil characteristic isn’t evident, the various soil distribution characteristics under corresponding topography and field quality conditions are still clear, so the regional distribution has various forms.Tu Mountain, Jing Mountain, Laohu Mountain, Yan Mountain, Cao Mountain, Zhuizi Mountain, East and West Lu Mountain and Dagong Mountain are acid crystalline rock hills, which form the soil area with yellow-brown soil and Aluminosilisic skeletal soil; Dahong Mountain, Minglong Mountain, Dajin Mountain and Dafei Mountain are carbonate hills, mainly the brown limestone soil; Flood area along Huai River, Guo River, Xie River, Hui River and middle and down streams of Beifei River are distributed with fluvo-aquic soil; low-lying plain in Huaibei and Tianhe Lake area are Shajiang black soil areas. The soil distribution rule from south to north is: yellow-brown soil-fluvo-aquic soil-Shajiang black soil.Bengbu is in the transition zone of deciduous broad-leaved forests in warm temperate zone, deciduous broad-leaved forests in north subtropical zone and evergreen broad-leaved forests, the main vegetation is deciduous broad-leaved forests in warm temperate zone. The native natural vegetation has disappeared because of the historical changes, but the typical north and south trees are distributed in this area. The vegetation can be divided into following types according to the natural vegetation and artificial vegetation: secondary forest shrub, ancient scattered trees, artificial forest, protection forest and surrounding




scattered trees, fruit trees, mulberry trees, underbrush, fireweeds, marsh and aquatic vegetation.The artificial forest is monotonous, there are more pure forests and less mixed forests, usually it’s the mixture of black pines, masson pines and locust trees, sawtooth oaks. The protection forest is along Huai River embankment, poplar trees, Chinese parasol trees, deodar cedars and Chinese locust trees are planted at 2 sides of the urban roads, the greening of suburban roads is poplar trees, willows, paulownia and locust trees. Suburban gardening farms and fruit forests villages have economic forests such as apple trees, pear trees, grapes and pomegranates. There are 415 tree species in the whole city, belonging to 56 families, 102 genuses. There are 140 species of common arbors, 70 species of common bushes and 10 species of vine plants.

4.6 Air

4.6.1 Urban Area

4.6.1.1 Analysis Routine Monitoring DataThe analysis of the current air quality in Bengbu urban area is based on the routine monitoring results of air quality provided by the municipal environmental monitoring station. In Bengbu city, there are three routine monitoring points for air quality at the Worker’s Sanatorium, the Department Store Building and the No.2 WTP, which respectively represent the air quality of cultural & educational area, mixed business & residential area and industrial area. The assessment in the report is based on the monitoring data from the 2005 Bengbu Municipal Environmental Quality Report as listed below.

Table 9: Air Quality Monitored Data of Bengbu Urban Area in 2005Unit: mg/m3

Mornitoring Point Mornitoring Item

Worker‘s Sanatorium

Department Store No.2 WTP Average for

the City

SO2

Range of monitored values 0.022～0.045 0.013～0.029 0.027～0.062 0.023～0.042

Incompliant rate % 0 0 0 0

Annual mean 0.034 0.021 0.047 0.034

NO2


Incompliant rate % 0 0 0 0

Annual mean 0.036 0.040 0.052 0.043

PM10


Incompliant rate % 1.6 0.6 2.8 1.6

Annual mean 0.069 0.062 0.079 0.070

Table 10: Statistics of Comprehensive Pollution Indices for Key Pollutants at Monitoring Points in 2005

Monitoring Worker‘s Sanatorium Department Store No.2 Water Works




PointItem

Pollution Load Sub-

index

Pollution Load

Coefficient

Pollution Load Sub-

index

Pollution Load

Coefficient

Pollution Load Sub-

index

Pollution Load

Coefficient

SO2 0.57 0.33 0.35 0.24 0.78 0.36

NO2 0.45 0.26 0.50 0.34 0.62 0.28

PM10 0.69 0.40 0.62 0.42 0.79 0.36

Comprehensive Pollution Index 1.71 1.47 2.19

It can be seen from the above tables that compared with the Class II standard regulated by the Ambient Air Quality Standard, only the indicator of PM10 shows some incompliance. This is especially the case for the fourth season in a year, which is somewhat related to the dust precipitation intensity and heating by coal firing in winter in Bengbu area. Although not reflected by the above tables, the concentration of NO2 also exceeded the standard to a less extent throughout a year, which indicates the increasing pollution of traffic emission. That means it is necessary to strengthen the pollution control management over the traffic flow and the vehicle exhaust gas.Although Bengbu is not within the controlled area for acidic rain, the situation is getting worse in view of increasing frequency and decreasing pH value of acidic rain taking place in this area (as shown in Table 11).

Table 11: Statistics of Acidic Rain in Bengbu (2000-2005)

Year Occurrence frequency (%) pH range Average pH value

2000 6.0 4.91~7.60 6.162001 5.0 4.85~8.30 6.142002 15.4 4.28~7.53 5.462003 17.8 4.23~7.83 6.292004 17.9 3.42~7.91 6.212005 59.5 3.46~7.74 5.39

4.6.1.2 Tianhe AreaFor the area around Tianhe, there are two routine air quality monitoring points, one is near Laoguanxu at Heihu Mount and the other is in the Tianhe Fishery. The indicators include TSP, PM10, SO2 and NO2. The monitoring results and corresponding analysis (based on the method of single-factor index as presented in Annex 4) are shown in the following table.

Table 12: Air Quality Monitoring and Analysis around Tianhe in 2005

Unit：mg/m3

Item

Laoguanxu at Heihu Mount Tianhe Fishery (GB3095-1996)

Class II

Daily Mean

Range of monitored

value

Daily mean

Single Factor

Index Pi

Range of monitored

value

Daily mean

Single Factor

Index Pi

SO2 0.005~0.095 0.017 0.11 0.005~0.054 0.010 0.07 0.15

NO2 0.005~0.098 0.035 0.29 0.011~0.094 0.043 0.36 0.12




PM10 0.044~0.217 0.121 0.81 0.034~0.087 0.053 0.35 0.15

TSP 0.099~0.404 0.241 0.80 0.069~0.122 0.081 0.27 0.30

It can be seen from the above statistics that air quality around Tianhe area and its northern hilly land is good and compliant with the Class II standard of the Ambient Air Quality Standard (GB3095-1996). Among others, the air quality around Tianhe is better than that around Heihu Mount area, which mainly benefits from the dust falling effects in the Tianhe water area; The key air pollutants around Heihu Mount are PM10 and TSP indicating the air quality in the area is affected by the flying dust seriously, which is closely related to the rock exposure, vegetation sparseness and soil erosion due to quarrying activities in the Heihu Mount.

4.6.2 Three Counties

As no routine air monitoring points is available in the three counties of Guzhen, Huaiyuan and Wuhe, the historical monitored data provided by the local EPBs are used in the environmental assessment.

4.6.2.1 Huaiyuan CountyThe evaluation of the current air quality in Huaiyuan County is based on the historical moni monitored data provided by Huaiyuan County EPB. The sampling point is in the new county government yard. The monitored indicators include TSP, SO2 and NO2, and the results of monitoring and analysis are listed in the following Table 13.

Table 13: Results of Air Quality Assessment for Huaiyuan County

TSP( mg/m3) SO2( mg/m3) NO2( mg/m3)

Monitoring Data (Daily Mean) 0.169 0.005 0.017

Central Urban Area (Class II Area) Ii 0.56 0.33 0.14

Food Processing Park (Class III Area) Ii 0.34 0.02 0.14

Jingshan Area (Class I Area) Ii 1.4 0.1 0.21

From the monitoring data above it can be seen that the TSP, SO2 and NO2 concentrations in the central urban area and the Food Processing Park of Huaiyuan in 2004 has reached the control requirements for the functional zones; The SO2 and NO2 concentrations of Jingshan Area are compliant with the requirements of functional zones, but the TSP concentration could not meet the requirement, which is related to the rock exposure and soil erosion due to the destroy of ground surface vegetation by mountain exploitation activities in Jingshan Area.

4.6.2.2 Wuhe CountyThe evaluation of the current air quality in Wuhe County is based on the historical moni monitored data provided by Bengbu Municipal EPB for the year of 2006. There are totally three air sampling points around the project site. The indicators of TSP, SO2 and NO2 are monitored over the continuous five days from June 26th to 30th, 2006, and the monitoring and analysis results are respectively shown in the following Table 14 and Table 15.

Table 14: Air Quality Monitoring Results for Wuhe County




Sampling Point Date SO2 NO2 TSP

1# Beside the Sanpu Great

Canal and the highway

Jun.26 0.009 0.006 0.042

Jun.27 ＜0.005 0.022 0.046

Jun.28 0.006 0.009 0.177

Jun.29 ＜0.005 0.009 0.084

Jun.30 ＜0.005 0.068 0.212

Mean 0.005 0.023 0.112

2# Xiaolizhuang

Jun.26 ＜0.005 0.010 0.022

Jun.27 ＜0.005 0.010 0.100

Jun.28 ＜0.005 0.014 0.140

Jun.29 ＜0.005 0.014 0.361

Jun.30 ＜0.005 0.027 0.079

Mean ＜0.005 0.015 0.140

3# Zhujia

Jun.26 ＜0.005 0.029 0.066

Jun.27 0.029 0.010 0.170

Jun.28 ＜0.005 0.035 0.110

Jun.29 ＜0.005 0.026 0.102

Jun.30 ＜0.005 ＜0.003 0.095

Mean 0.009 0.020 0.109

Table 15: Results of Air Quality Assessment for Wuhe County

Sampling Point Date Assessment

Index Ii (SO2)Assessment Index Ii (NO2)

Assessment Index Ii (TSP)

1# Beside the Sanpu

Great Canal and the highway

Jun.26 0.06 0.05 0.14

Jun.27 0.03 0.18 0.15

Jun.28 0.04 0.08 0.59

Jun.29 0.03 0.08 0.28

Jun.30 0.03 0.57 0.71

2# Xiaolizhuan

g

Jun.26 0.03 0.08 0.07

Jun.27 0.03 0.08 0.33

Jun.28 0.03 0.12 0.47

Jun.29 0.03 0.12 1.20

Jun.30 0.03 0.23 0.26

3# Zhujia Jun.26 0.03 0.24 0.22

Jun.27 0.19 0.08 0.57

Jun.28 0.03 0.29 0.37




Jun.29 0.03 0.22 0.34

Jun.30 0.03 0.03 0.32

It can be seen from the above tables that except for TSP that exceeded the standard once on June 29 at 2# point, all the assessment factors of pollutants at the monitoring points are within 1. Generally it is considered that the current air quality of Guzhen urban area complies with the Class II standard of GB3095-1996.

4.7 Surface WaterThe assessment of surface water quality for the BIEIP-related rivers and lakes in the report is based on the following monitoring data:

- For lakes and rivers with functions of water body, the routine monitored data provided by the municipal and county EPBs are used;

- For the watercourses and water bodies without routine monitoring data, the historical monitoring data provided by the municipal and county EPBs are used;

- For the ditches and canals with neither routine monitoring data nor historical monitoring information, some special monitoring work has been carried out in accordance with the actual requirements.

4.7.1 Huai River

As is known, Huai River is one of the most polluted rivers in China, and despite considerable government efforts (including participation of the World Bank on the Huai River Pollution Control Project), it has proven to be one of the most difficult to clean up. According to the historic monitoring results3, although the government has made significant investments on the pollution control of Huai River, the water quality of Huai River for Bengbu section does not meet the Class III water quality target4 in the last seven years. This is especially during the dry season from January to March (shown in Figure 8) when the flow rate of Huai River is low and insufficient to dilute the incoming pollution.

Table 16: Water Quality Classification of Huai River within Bengbu (2000-2006)

River name

Water quality target 2000 2001 2002 2003 2004 2005 2006

Huai River

Class III IV IV III-V IV IV-worse than V III-IV III-IV

Non-compliant parameters

COD, Non-ion

Ammonia, NO2-N

NH3-N

DO, CODMn, BOD5, NH3-N, COD

BOD5, NH3-N

NH3-N, BOD5

NH3-N NH3-N

3 Environmental quality yearly report of Bengbu Municipality, www. Bbepb.gov.cn.4 Required by Huai River water functional zoning and “Pollution control plan for the

eastern line of North-South Transfer Project”.RIg00006 A17978/CIGZ070287



Water Quality Classification of Huai River

1

2

3

4

5

6

2004

Jan

Mar

May Ju

l

Sep Nov

2005

Jan

Mar

May Ju

l

Sep Nov

2006

Jan

Mar

May Ju

l

Sep Nov

Water quality objective Bengbu Gate Wujiadu

Bengbu Road Gate Linhuaiguan Xiaoliuxiang

Note: The classification is based on the five classes of water quality in GB3838-2002 Environmental Quality Standards for surface water. And Class 6 in the figure refers to the water quality worse than Class V.

Figure 8: Variation of Water Quality Classification for Huai River (2004-2006)However, the situation seemed to be improved in 2006. According to the surface water monitoring data of 2006 (see Figure 9 and Table 17), only the monthly average concentration of NH3-N is a little beyond the Class III requirements.

List of water quality monitoring cross-sections: 1-Upstream of Bengbu Gate; 2-Downstream of Bengbu Gate; 3-Xintieqiao; 4-Mohekou.




Figure 9: Water Intake & Water Quality Monitoring Cross-sections along Huai River

Table 17: 2006 Monthly Average Water Quality Monitoring Data of Huai River

Monitoring

Cross-sectionpH

EC

ms/mDO CODmn BOD5 NH3-N Petroleum

Volatile

PhenolHg Pb Cd

Downstream of

Bengbu Gate7.72 48.9 6.67 3.93 2.49 0.91 0.01 0.001 0.00001 0.025 0.0025

Xintieqiao 7.72 49.6 5.94 4.16 2.851.05

(*)0.01 0.0015 0.00001 0.025 0.0025

Moheko 7.72 49.1 6.04 4.14 2.891.05

(*)0.01 0.0013 0.00001 0.025 0.0025

Class III

requirements

(GB3838-

2002)

6-9 / >=5 <=6 <=4 <=1 <=0.05 <=0.005 <=0.0001 <=0.05 <=0.005

(*) Values exceeding the standards

By using the single standard index formula (as presented in Annex 4), the results are shown in the following table.Table 18: Evaluation Results for the Annual Mean of Water Quality in the Bengbu

Section of the Huai River in 2006

IndicatorDownstream of

Bengbu GateXintieqiao Mohekou

pH 0.36 0.36 0.36

DO 0.59 0.77 0.74

CODMn 0.66 0.69 0.69

BOD5 0.62 0.71 0.72

NH3-N 0.91 1.05 1.05

Petroleum 0.20 0.20 0.20

Volatile phenols 0.20 0.30 0.26

COD 0.91 0.98 0.93

Fecal coliform 0.54 10.03 9.77

TP 0.70 0.79 0.82

TN 2.15 2.61 2.40

It can be seen from the above table that in 2006 the TN concentration for Bengbu section of the Huai River exceeded the standard by 1.15~1.61 times. The fecal coliform at Xintieqiao and Mohekou sections exceeded the standard by 8.77~9.03 times. The NH3-N concentration for the Xintieqiao and Mohekou sections exceeded the standard slightly by 0.05 time. The annual mean of other indicators can meet the Class III requirements according to the Environmental Quality Standards for Surface Water (GB3838-2002).




4.7.2 Tianhe Lake

The routine monitoring data for the water quality of the Tianhe Lake in 2006 provided by Bengbu Municipal Environmental Monitoring Station are shown in the table below.

Table 19: Routine Monitoring of Water Quality in Tianhe Lake in 2006

Unit：mg/L (except pH)

Indicator pH DO CODMn BOD5 NH3-N TP TN PetroleumFecal

coliform pc./L

North of Tianhe Lake

7.97 6.88 4.32 2.68 0.108 0.68 0.0025 0.07 125

South of Tianhe Lake

8.03 6.18 4.14 2.40 0.051 0.37 0.0025 0.09 50

Class Ⅲ, GB3838-2002

6-9 5 6 4 1 0.05 1.0 0.05 10000

By using the single standard index formula, the evaluation results for the water quality of Tianhe Lake are shown in the following table.

Table 20: Evaluation Results of Water Quality in Tianhe Lake

Unit：mg/L (except pH and Coliform)

Indicator pH DO CODMn BOD5 NH3-N TP TN PetroleumFecal

coliform pc./L

North of Tianhe Lake

0.49 0.54 0.72 0.67 0.11 13.60 0.0025 1.40 0.013

South of Tianhe Lake

0.52 0.71 0.69 0.60 0.05 7.40 0.0025 1.80 0.005

It can be seen from the above tables that the current water quality of Tianhe Lake can basically satisfy the requirements for Class III according to the Environmental Quality Standards for Surface Water (GB3838-2002). Among others, the TP and petroleum are the key incompliant indicators, indicating the eutrophication of the Tianhe Lake to some extent. The cause lies in the over-reproduction of aquatic plants in the Tianhe Lake and also the non-point pollution from the wide application of fertilizers and pesticides over the farmland around the Tianhe Lake; the incompliant petroleum concentration may relate to the discharge of domestic wastewater from the villages around the Tianhe Lake. Generally the water quality of the south Tianhe Lake is slightly better than that of the north Tianhe Lake because there are denser villages and more artificial fish ponds in the north of Tianhe Lake.

4.7.3 Longzi Lake




The pollution of the Longzi Lake mainly comes from the domestic pollution by surrounding residents and the agricultural non-point pollution, which makes the water quality of the Longzi Lake around Class IV~V for recently years. For this environmental assessment, the water of the Longzi Lake is sampled and monitored at four points, namely, Longzi Lake Workers’ Sanatorium, Qiuqiao Village, the lake centre and the outlet of Longzi Lake to the Huai River, and the monitoring results are shown in the table below.

Table 21: Water Quality Monitoring Results of Longzi Lake

Unit：mg/L (pH dimensionless)

Monitoring Point

Time pH DO CODcr BOD5 NH3-N TP TN As Cr6+ Hg

Workers’

Sanatorium

12.20 8.07 6.41 26.4 6.34 0.358 0.20 2.58 3.87×10-3 <0.004 <1×10-5

12.21 8.00 6.74 25.5 6.24 0.324 0.22 2.35 4.17×10-3 <0.004 <1×10-5

Mean 8.03 6.58 25.9 6.29 0.341 0.21 2.47 4.02×10-3 <0.004 <1×10-5

Qiuqiao

Village

12.20 7.84 6.57 25.1 5.87 0.204 0.27 1.64 1.000×10-2 <0.004 <1×10-5

12.21 7.56 6.69 23.6 5.65 0.257 0.24 1.24 1.047×10-2 <0.004 <1×10-5

Mean 7.60 6.63 24.4 5.76 0.231 0.25 1.44 1.024×10-2 <0.004 <1×10-5

Lake Centre

12.20 8.21 6.25 29.0 5.41 0.587 0.34 2.47 2.48×10-3 <0.004 <1×10-5

12.21 8.31 6.21 27.1 5.24 0.524 0.31 2.87 2.94×10-3 <0.004 <1×10-5

Mean 8.24 6.23 28.1 5.33 0.556 0.32 2.67 2.71×10-3 <0.004 <1×10-5

Outlet to Huai River

12.20 8.29 6.89 34.5 6.67 0.677 0.44 3.49 4.80×10-3 <0.004 <1×10-5

12.21 8.31 6.44 30.4 6.48 0.605 0.42 3.77 4.30×10-3 <0.004 <1×10-5

Mean 8.30 6.67 32.5 6.58 0.641 0.43 3.63 4.55×10-3 <0.004 <1×10-5

Water quality in Longzhi Lake is evaluated by using the single standard index formula based on the mean values of Longzi Lake water quality listed in Table 21 and the evaluation results are shown in the following table.

Table 22: Evaluation Results of Water Quality in Longzi Lake

Monitoring Point pH DO CODcr BOD5 NH3-N TP TN As Cr6+ Hg

Workers’

Sanatorium0.52 0.61 1.30 1.57 0.34 4.2 2.47 0.08 0.04 0.05

Qiuqiao Village 0.30 0.60 1.22 1.44 0.23 5.0 1.44 0.20 0.04 0.05

Mid-lake 0.62 0.70 1.40 1.33 0.56 6.4 2.67 0.05 0.04 0.05

Outlet to Huai River

0.65 0.59 1.62 1.64 0.64 8.6 3.63 0.09 0.04 0.05

From the above table it can be seen that among the water quality indicators of Longzi Lake, CODcr, BOD5, TP and TN are all incompliant with the Class III requirements according to the Environmental Quality Standards for Surface Water (GB3838-2002).

Table 23: Ranking of Key Pollutants in the Longzi Lake




TP TN BOD CODcrRanking 1 2 3 4Multiples beyond the standard limits

3.2～7.6 0.44～2.63 0.33～0.64 0.22～0.62

Pollution Contribution Rate 32.35% 17.9% 15.53% 8.01%

As shown above, the major problem for the lake lies in the high nutrient salt content and the eutrophication of the water body. And according to the pollution distribution over the lake, the pollution contribution rates for the south, middle and north of Longzi Lake are respectively 38.23%, 32.06% and 29.71%, which also shows that the pollution in the lake increases from the north to the south.

4.7.4 Guo River

Guo River is related to the project of Huai Yuan County. The water quality monitoring data for the Huaiyuan section of Guo River by Huaiyuan County EPB is shown in the table below.

Table 24: Evaluation of water quality in the Guo River


Sampling Point

Sampled date DO pH CODMn NH3-N CODCr

No.3 Guo River

Bridge

2006.2.18 11.0 8.30 8.40 9.97 /

2006.3.6 / 8.50 11.34 17.86 /

2005.12.8 / / / 3.61 7.00

2005.12.7 / / / 2.71 6.57

2005.10.9 7.2 7.98 / 1.10 5.9

Mean 9.1 8.26 9.87 7.05 6.49

Standard for Class IV in GB3838-2002 ≥3 6～9 ≤10 ≤1.5 ≤30

Evaluated with the single standard index formula and based on the mean value listed above, the results are shown in the following table.

Table 25: Evaluation Results of Water Quality in Guo River

Sampled site DO pH CODMn NH3-N CODCr

No.3 Guo River Bridge 0.16 0.63 0.987 4.7 0.16

Calculation shows that the standard indices of DO, pH and CODMn are lower than 1, indicating that all these water quality indicators are compliant with the Class IV requirements of in the Environmental Quality Standards for Surface Water (GB3838-2002). The standard index of NH3-N is over 1, indicating the water quality indicator has exceeded the standard and can no longer meet the requirements for use.




4.7.5 Hui River

Hui River runs through the Guzhen County, which is the location of one sub-project. As required by the functional zoning of water environment, the Guzhen section of Hui River shall follow the Class IV standard of the Environmental Quality Standards for Surface Water (GB 3838-2002). The monitoring data of 2001-2005 is listed in the following table.

Table 26: Monitoring Results for the Guzhen Section of Hui River (2001-2005)


Year Item pH DO CODMn BOD NH3-N Hg Pb Volatile Phenols Petroleum

2001Mean 8.15 7.62 5.49 4.00 0.340 0.000005 0.025 0.001 0.01

Incompliant Rate 0 0 0 0 0 0 0 0 0

2002Mean 8.06 4.84 7.74 5.55 1.130 / / / /

Incompliant Rate 0 0 12.5 0 37.5 / / / /

2003Mean 7.87 5.9 8.42 7.54 0.842 0.000005 0.025 0.001 0.01

Incompliant Rate 0 27.3 22.7 36.4 27.3 0 0 0 0

2004Mean 7.95 6.49 6.33 5.16 0.681 0.000005 0.025 0.001 0.01

Incompliant Rate 0 16.7 0 25 8.3 0 0 0 0

2005Mean 8.02 5.51 8.52 4.26 0.665 0.000005 0.025 0.001 0.01

Incompliant Rate 0 12.5 37.5 8.3 16.7 0 0 0 0

Class IV in GB 3838-2002 6～9 ≥3 ≤10 ≤6 ≤1.5 ≤0.001 ≤0.05 ≤0.01 ≤0.50

It is shown above that the four pollution indicators of Hg, Pb, volatile phenol and petroleum in the water of this section are all within the detectable limits, and the pH value is also within the standard limits. However, there were inter-annual incompliant cases for the concentrations of CODMn, DO, BOD and NH3-N. Based on the annual means of Hui River water quality listed in Table 26 and the single standard index formula, the water quality of the Hui River is evaluated as follows.

Table 27: Evaluation Results of Water Quality in the Hui River

Year pH DO CODMn BOD NH3-N Hg Pb Volatile phenols

Petroleum

2001 0.58 0.24 0.55 0.67 0.23 0.005 0.50 0.10 0.02

2002 0.53 0.70 0.77 0.93 0.75 / / / /

2003 0.44 0.52 0.84 1.26 0.56 0.005 0.50 0.10 0.02

2004 0.48 0.43 0.63 0.86 0.45 0.005 0.50 0.10 0.02

2005 0.51 0.59 0.85 0.71 0.44 0.005 0.50 0.10 0.02




From the above table, it can be seen that the water quality of the Hui River in Guzhen is relatively good and compliant with the Class IV requirements of the Environmental Quality Standards for Surface Water (GB3838-2002).




4.7.6 Huaihongxin River

Huaihongxin River runs through the counties of Huaiyuan, Guzhen and Wuhe of Bengbu Municipality. The proposed water supply source for the WTP planned for Wuhe Mohekou Industrial Park in the BIEIP, the Xiangjian Lake, is right on the middle of the Huaihongxin River. The monitoring data of Xiangjian Lake provided by the Bengbu Municipal Environment Monitoring Station are shown in Table 28. It is known from Table 28 that all the water quality indicators for the Huaihongxin River are compliant with the Class III standard of the Environmental Quality Standards for Surface Water (GB3838-2002).

Table 28: Water Quality Monitoring Results for Xiangjian Lake of Huaihongxin River

Unit: mg/L (except pH)

DateMonitoring Parameter

pH DO CODMn NH3-N COD

2005.3.24 8.70 10.26 4.08 0.450 13.1

2005.11.20 8.52 9.75 4.23 0.426 12.4

2006.2.26 8.46 11.60 3.86 0.532 10.6

2006.11.9 8.18 8.05 4.31 0.245 —

Class III, GB3838-2002 6~9 ≥5 ≤6 ≤1 ≤20

Based on the annual means of Hui River water quality listed in Table 28 and the single standard index formula, the water quality of the Huaihongxin River is evaluated as follows.

Table 29: Evaluation Results of Water Quality in Huaihongxin River

Date pH DO CODMn NH3-N COD

2005.3.24 0.85 0.05 0.68 0.45 0.66

2005.11.20 0.76 0.14 0.71 0.43 0.62

2006.2.26 0.73 0.20 0.64 0.53 0.53

2006.11.9 0.59 0.45 0.72 0.25 —

From the above table, it can be seen that the water quality of the Xiangjian Lake is relatively good and compliant with the Class III requirements of the Environmental Quality Standards for Surface Water (GB3838-2002).

4.7.7 Canals and Ditches in Urban Area

4.7.7.1 Xijiagou CanalAccording to the monitoring data provided by the municipal environment monitoring station, as one of the sub-project in the BIEIP, the concentrations of major pollutants at the outlet of Xijiagou Canal to the Huai River in 2006 are far beyond the Class V standard throughout the year, as shown in the Table 30.




Table 30: Monitoring Results of Water Quality in Xijiagou CanalUnit: mg/L (except pH)

Jan Feb. Mar. April May July Aug. Sep. Oct. Nov. Dec. Annual mean

Class V, GB3838-2002

pH 6.70 7.80 7.31 7.69 7.54 7.36 7.22 7.21 7.55 7.56 7.22 7.38 6～9

COD 224 362 155 218 116 90.6 89.4 50﹤ 50﹤ 99 121.5 163.94 40

NH3-N 18.384 15.28 5.121 5.148 7.61 1.788 2.43 8.147 5.284 1.416 1.725 6.58 2

Table 31: Evaluation Results for the Water Quality of Xijiagou Canal

pH COD NH3-N

0.19 4.10 3.29

Among others, the COD and NH3-N were the key pollutants, exceeding the Class V water quality standard by about 8 times. Clearly, the water of Xijiagou Canal has been badly polluted and requires urgent improvement.

4.7.7.2 Sanpu Great DitchSanpu Great Ditch lies in the Wuhe County, which is proposed to be de-silted in the BIEIP. Two water quality cross-sections were monitored for the Sanpu Great Ditch according to the historic monitoring data provided by the municipal EPB, which are respectively (1) 500 m upstream of the outlet of Sanpu Great Ditch to the Huai River and (2) before the outfall of the Sanpu Great Ditch into the Huai River. The monitoring was done on June 15 and 16 (once per day), and the results are shown in the table below.

Table 32: Water Quality Monitoring Results of Sanpu Great DitchUnit: mg/L (except pH)

Mornitoring ItemMonitoring

PointDate pH COD NH3-N CODMn BOD5

Water temperatur

e

(1)2006.6.15 7.34 12.2 0.173 3.74 2.28 22.5

2006.6.16 7.36 12.1 0.164 3.81 2.28 22.7

(2)2006.6.15 7.61 24.4 0.278 7.96 5.88 23.2

2006.6.16 7.56 23.2 0.279 7.91 5.72 23.6

Class , GB3838-2002Ⅲ 6~9 ≤20 ≤1.0 ≤6 ≤4

Evaluated with the single standard index formula and based on the mean value listed above, the results are shown in the following Table 33.




Table 33: Water Quality Evaluation Results of Sanpu Great Ditch

Mornitoring ItemMonitoring Point

pH COD NH3-N CODMn BOD5

(1) 0.175 0.61 0.165 0.63 0.57

(2) 0.295 1.19 0.28 1.325 1.45

By analysis, the water quality of both cross-sections on the Sanpu Great Ditch is compliant with the Class V standard of the Environmental Quality Standards for Surface Water (GB3838-2002). The water quality of the cross-section (1) is much better than that of the cross-section (2), which mainly results from the discharge through many industrial and domestic wastewater outfalls downstream of the Sanpu Great Ditch

4.7.7.3 Ponds in Huaiyuan CountyAs some ponds in Huaiyuan County are involved in the BIEIP for their de-silting without any historical monitoring data, the national EA consultants, NCMDI, has committed Bengbu Municipal Environment Monitoring Station to monitor the water quality of the pond east of West Ring Road in Huaiyuan County on March 5, 2007, and the results are shown in the table below.

Table 34: Water Quality Monitoring Results for the Ponds in Huaiyuan County Unit: mg/L (except pH and Fecal coliform)

DateDetection items

pH DO CODMn BOD NH3-N TP Petroleum Fecal Coliform

2007.3.5 8.48 7.89 4.59 2.83 0.594 0.10 <0.02 22000

Standard for Class III,,

GB3838-20026～9 ≥5 ≤6 ≤20 ≤1.0 0.05 / /

Evaluated with the single standard index formula and based on the value listed above, the results are shown in the following Table 35。

Table 35: Evaluation Results for the Water Quality of the Ponds in Huaiyuan County

pH DO CODMn BOD NH3-N TP Petroleum Fecal Coliform

0.74 0.29 0.765 0.142 0.594 2 / /

According to the analysis, only the TP value is beyond the standard requirements for the Class III water.

4.7.7.4 Zhanggongshan PondBengbu Municipal Environmental Monitoring Station has provide the water quality monitoring data for the south, middle and north of Zhanggongshan pond from the samples of April 6 and October 20 2006, and the results are shown in the following table.




Table 36: Monitoring of water quality in Zhanggong Mount PondUnit: mg/L (except pH and Fecal Coliform)

IndicatorSouth Middle North

Monitoring Data

Single-factor Index

Monitoring Data

Single-factor Index

Monitoring Data

Single-factor Index

pH 8.13 0.56 8.27 0.64 8.115 0.56

DO 2.7 1.9 2.88 1.36 2.9 1.3

CODMn 19.135 1.91 11.295 1.13 11.12 1.11

BOD5 7.035 1.17 5.02 0.84 4.965 0.83

NH3-N 12.5675 8.38 10.034 6.69 7.4505 4.97

Hg 0.000005 0.005 0.000005 0.005 0.000005 0.005

Petroleum 0.03 0.06 0.035 0.07 0.04 0.08

TP 1.19 3.97 1.2 4.0 1.14 3.8

TN 15.255 10.2 12.87 8.58 11.575 7.72

Cd 0.0025 0.5 0.0025 0.5 0.0025 0.5

Fecal coliform

(pc/l)240000 12 123950 6.20 122450 6.12

From the above table it is clear that the concentrations of NH3-N, TP, TN and fecal coliform in Zhanggongshan Pond are all greatly beyond the Class V standard requirements, which mainly results from the random discharge of untreated domestic wastewater into the pond.

4.8 Groundwater

4.8.1 General

The groundwater resource of Bengbu Municipality mainly exists in the area to the north of the Huai River. The groundwater yield is 198,000m3/a·km2. According to the survey results, the exploitable groundwater is concentrated in the fine sand or middle fine sand layers whose buried depth is more than 20m, especially in ancient river course area. The groundwater which can be explored in the future is in Caolaoji.The groundwater resources are deficient in the area south of Huai River, where the groundwater is mainly stored in the apertures of weathered bedrock and tectonic cracks. The groundwater yield is less than 50,000m3/a·km2. The water richness of groundwater is poor and it isn’t well distributed, so the centralized exploitation is inappropriate.Since the shallow groundwater is directly recharged by the rainfall and seasonally the local surface water, the groundwater quality is badly polluted by human activities in Xiaobengbu, Wuxiaojie and the area north of Changhuai Town, especially near the pollution discharging and receiving water bodies (canals, ponds, ditches and pools). Monitoring work undertaken by the municipal EPB for the whole municipality has shown that the groundwater quality is around Class IV




from 2000 to 2005 and could not meet the Class III target of the Groundwater Quality Standard (GB/T14848-93), as shown in the following table.




Table 37: Groundwater Quality in Bengbu Municipality2000 2002 2003 2004 2005

Water Quality Classification IV IV IV IV III-IV

Non-compliant Parameters

Coliform, NO2-N, NH3-N, As

Coliform, NH3-N, NO2-N, As

NH3-N, NO2-N

Total Hardness, NH3-N

/

4.8.2 Groundwater around Longzi Lake

The monitoring data for the groundwater around the Longzi Lake in Xilushan, Xiaozhujia, Jinjiagang and Shangying Village are shown in the following Table 38, which is provided by the Bengbu Municipal Environmental Monitoring Station.

Table 38: Groundwater Quality Monitoring Results for the Area around Longzi Lake

SiteMonitoring Parameter（mg/L）

NH3-N NO2-N Cr6+ Hg As Pb Cd Fecal Coliform (pc./L)

Xilushan0.070 0.003 <0.004 0.000025 <0.0005 <0.05 <0.005 <3

0.066 0.003 <0.004 0.000025 <0.0005 <0.05 <0.005 <3

Xiaozhujia0.063 <0.003 <0.004 0.000025 0.0012 <0.05 <0.005 <3

0.063 <0.003 <0.004 0.000025 0.0009 <0.05 <0.005 <3

Jinjiagang0.060 <0.003 <0.004 0.000025 0.0015 <0.05 <0.005 <3

0.057 <0.003 <0.004 0.000025 0.0013 <0.05 <0.005 <3

Shangying Village

0.058 0.004 <0.004 0.000025 0.0025 <0.05 <0.005 <3

0.060 0.004 <0.004 0.000025 0.0028 <0.05 <0.005 <3

With the single standard index formula, the groundwater quality in the surrounding area of Longzi Lake is evaluated in the table below.

Table 39: Evaluation of Groundwater Quality in Longzi Lake Area

SiteStandard Index

NH3-N NO2-N Cr6+ Hg As Pb Cd Fecal coliform

Xilushan 0.34 0.15 <0.08 0.025 <0.01 <1 <0.5 <0.1

Xiaozhujia 0.32 <0.15 <0.08 0.025 0.021 <1 <0.5 <0.1

Jinjiagang 0.29 <0.15 <0.08 0.025 0.028 <1 <0.5 <0.1

ShangyingVillage

0.30 0.2 <0.08 0.025 0.055 <1 <0.5 <0.1

According to the evaluation, all the groundwater quality indicators are compliant with the Class III Standard of the Groundwater Quality Standard (GB/T14848-93), which indicates the good quality of groundwater in this area.




4.8.3 Mohekou

As an alternative for the supply source of the proposed Mohekou WTP, a groundwater survey was also carried out for Mohekou Industrial Park. Five boreholes are included in the assessment as shown in the figure below, and a report named “Preliminary Assessment Report on the groundwater distribution of Wuhe County Mohekou Industrial Park” has been issued in May 2007 based on the preliminary findings during the survey.According to the survey, in the area the shallow groundwater in the aquifer within 50m deep is currently the major water supply source for the local rural residents and a few local industries but with low exploitation quantity. The shallow groundwater is directly recharged and greatly impacted by the rainfall and the nearby surface water. The deep groundwater below 50m is mainly recharged by the shallow groundwater and the side runoff with relatively stable water quantity and quality. As shown in Figure 10, the major aquifer of loose soil lies in the east-west direction. The single-well water yield for the southern part is between 300-500m3/d, while that for the northern area is between 100-300m3/d. And the hydraulic connection between the shallow groundwater, the deep groundwater and the surface water is better in the southern area then that in the northern area. Due to the impacts of the surface water, the groundwater quality in the northern area is better than that in the southern area. However, the detailed evaluation of the groundwater quality in this area depends on the further analysis to be carried out later.

Figure 10: Groundwater Distribution around Mohekou Industrial Park

4.9 Water Supply




Huai River runs through Bengbu and serves as the major source for industrial and domestic water in Bengbu city and the water for farmland and vegetable garden in its suburbs. The main water intake is at the upstream of Bengbu Gate on the Huai River, which is supplemented by groundwater supply for some industries in the urban area, the groundwater supply for Huaishang District, and the emergency water supply source of Tianhe Lake.The tap water for the city is supplied by the Water Supply Company and some enterprises have their own self-supply sources from groundwater and the Huai River. The city has built three WTPs, all of which take water from the Huai River. The total water supply capacity was designed as 500,000m3/d ， in which 50,000m3/d from the No.1 WTP, 50,000m3/d from the No.2 WTP and 400,000m3/d from the No.3 WTP. However, the intakes of the No. 1 and No.2 WTPs are located downstream of the Bengbu Gate and the water pumped is mixed with the untreated urban sewage so that there is serious water pollution. In 1981 Gangliang River Diversion Project with a design capacity of 80,000m3/d was completed. When the Bengbu Gate is closed, the No.1 and No.2 WTPs have to divert water from upstream of the Bengbu Gate，but the water quality was still not guaranteed. Currently, both No. 1 and No.2 WTP have stopped water supply for the city.The No.3 WTP is located on the south bank of the Huai River at the eastern foot of Heihu Mount in the western suburbs of Bengbu city. The water pumping house is located at about 200m upstream of the Bengbu Gate. In 1987 the Phase I project of 100,000m3/d was completed and the Phase II, III and IV projects were successively completed in 1990, 1995 and 1998, which made the total water supply capacity of the WTP up to 400,000m3/d. Now it is the only municipal WTP to the south of the Huai River in Bengbu.In 1995, serious and unexpected water pollution accident occurred in the Huai River, which affected the water quality of the three WTP. The Bengbu Municipal Government decided to divert water from Tianhe Lake as the emergency supplementary water supply. The Tianhe project was built up in 1996 with the design capacity of 150,000m3/d and the designed supply duration about three months or so.In addition, there is a groundwater WTP completed in 2003 in Huaishang District to the north of the Huai River with the design water supply capacity of 50000m3/d and the current water supply capacity of 10,000m3/d.

Table 40: Water Supply Composition of Bengbu Municipality in 2005

In terms of water suppliers:

Municipal WTP

Industrial Self-supply

Agricultural Irrigation Stations Other Self-supply

Quantity (million m3) 108 64 44 22

(19 from groundwater)

Percentage (%) 45.4 26.9 18.5 9.6

In terms of water supply sources:

Surface Water Groundwater

Quantity (million m3) 199 34

Percentage (%) 83.6 14.3Note: In the 199 surface water supply, there is 147million m3 (62%) from upstream of the Bengbu Gate.




The above Table 40 shows the composition of water supply in Bengbu Municipality in 2005. According to the survey, there are about 50 self-supplied industries in Bengbu withdrawing water mainly from the Huai River, groundwater and some from the Longzi Lake. According to the analysis of the actual water supply data in Bengbu over recent years, the proportion of the industrial water demand is decreasing while and that of the domestic water is increasing. Currently about 284.8km of distribution network has been laid in the urban area. However, the water quality at the water intake has been deteriorating since 1980’s with the occurrence of several water pollution accidents respectively in 1989, 1992, 1994, 1996, 1999, 2001 and 2004. Especially during the dry season, the water quality of Huai River is too poor to meet the water supply requirements (generally considered to be Class III), due to the lack of dilution by sufficient flow. According to the water quality monthly reports of urban centralized drinking water sources in Anhui Province5 (Jan.2006 to Feb. 2007), there are six non-compliant records for the water intake upstream of Bengbu Gate, mostly during January to March with NH3-N as the key pollutant (See Table 41 below). At this stage, the impact of these incidents on tap water quality is unavailable.

Table 41: Water Quality of Major Centralized Drinking Water Source in Bengbu (Upstream of Bengbu Gate on Huai River)

2000 2001 2002 2003 2004 2005Water quality classification Class IV Class III-IV N/A N/A N/A Class III-IV

Standard-compliant rate 94.91% 95.24% 91.88% 93.59% 91.02% 94.23%

Key pollutants BOD, NH3-N Non-ion NH3 NH3-NDO, NH3-

N NH3-NCODMn, NH3-

N

Table 42: Non-compliant months for water intake upstream of Bengbu GateNon-compliant Month Key pollutantsJanuary 2006 NH3-N (1.38 times beyond standard)February. 2006 NH3-N (1.19 times beyond standard)March 2006 NH3-N (1.49 times beyond standard)July 2006 DO (0.94 time beyond standard)January 2006 NH3-N (1.36 times beyond standard) & Mn (0.54 time beyond standard)February 2006 NH3-N (1.67 times beyond standard) & Mn (0.35 time beyond standard)

In view to the possible shortage of water supply due to the pollution in dry season every year, Tianhe was developed as the emergency water supply source for Bengbu urban area in 1996.

4.10 Water Pollution

4.10.1 Major Sewage Outfalls of the Urban AreaThe wastewater from the urban area of Bengbu Municipality is discharged into the Huai River mainly through seven existing sewage outfalls as shown in Figure 11. The wastewater collected by the seven outfalls accounts for 70% of the total wastewater from the Bengbu urban area, whose detailed distribution is shown in the following .

5 http://www.aepb.gov.cn/index.aspRIg00006 A17978/CIGZ070287



Figure 11: Distribution of Sewage Outfalls in Bengbu Urban Area

Table 43: Monitoring Data of Major Sewage Outfalls in Bengbu Urban Area in 2006

No. Name of Sewage Outfall

Flowm3/s Monitoring Value NH3-N mg/L CODcr mg/L

W1 Baligou0.2-～1.46 Range 17.4～38.4 120～469

0.52 Annual Mean 25.8 317

W2 Xijiagou0.3～1.86 Range 1.70～18.8 34～224


W3 No. 3 Dock0.04～0.17 Range 26.6～70.9 117～339


W4 No.1 Dock0.09～0.13 Range 24.1～58.2 120～464


W5 Jiaotong Rd.0.18～0.40 Range 23.0～61.1 117～494


W6 Longzihe0.29～0.65 Range 20.6～56.4 123～214


W7 Baojiagou— Range 1.21～49.6 25～717

0.032 Annual Mean 23.3 300

Total 2.892 Weighted Mean 34.5 187

According to the above table, in terms of sewage volume, the top four outfalls in sequence are Xiajiagou, Baligou, Longzihe and Jiaotong Rd. The major pollutants




are ammonia nitrogen and COD respectively with the ranges of 10～45.5mg/L and 110～317mg/L.

18%

47%4%

3%

10%

17% 1% Baligou XijiagouNo. 3 wharfNo.1 wharfJiaotong Rd.LongziheBaojiagou

Figure 12: Percentage of Sewage Flow for the Seven Urban Sewage OutfallsAs shown in Figure 12, the Xiajiagou outfall is ranked No.1 (accounting for 47% of the total amount) in terms of wastewater flow rate. However, because there is 100,000m3/d (1.16m3/s) treated wastewater in the sewage discharge from Xijiagou Outfall, the pollutant concentrations are the lowest among all the seven output (as shown in Table 43), its NH3-N and COD contributions are only 21% and 28%, which shows that the effective treatment of wastewater could greatly reduce the pollutant discharge into the Huai River.

20%

21%

8%6%

1%27%

17%

Baligou XijiagouNo. 3 wharfNo.1 wharfJiaotong Rd.LongziheBaojiagou

Figure 13: NH3-N Contribution of Seven Sewage Outfalls in the Urban Area




32%

28%4%5%

15%

14% 2% Baligou XijiagouNo. 3 wharfNo.1 wharfJiaotong Rd.LongziheBaojiagou

Figure 14: COD Contribution of Seven Sewage Outfalls in the Urban AreaOf the seven outlets, Baligou outfall has the highest concentration and the biggest contribution of COD, which is closely related to the large amount of industries in the Baligou catchment and the consequent heavy pollution. Therefore, it is of great importance to improve the sewage treatment of the industrial polluters in Baligou area.The outfalls of No.3 Dock, No.1 Dock and Jiaotong Rd. have the highest NH3-N concentration due to their locations in the old urban area and the high proportion of collected domestic wastewater. The Longzi Lake outfall contributes the most to the NH3-N discharge, as the wastewater it collects is mainly the concentrated residential area west of the Longzi Lake and the domestic and agricultural production wastewater from the villages east of the lake. With further development and construction of this area, the wastewater quantity and the pollutant discharge will inevitably keep increasing, and it is necessary to complete the corresponding sewage treatment system.It is also noticeable that although the Baojiagou outfall has a small wastewater quantity, but the concentrations of COD and ammonia nitrogen is not low, respectively 300mg/L and 23.3mg/L. The wastewater collection system for the Baojiagou Catchment has not yet been completed, and the wastewater has not been collected effectively. However, since the area is close to the Longzi Lake, with the development of Longzi Lake scenery area, the wastewater generation of this area will increase inevitably. The construction of the sewage collection and treatment system should be closely linked up with the regional development to avoid the pollution to the downstream section of the Huai River in Bengbu urban area.

4.10.2 Key Industrial Polluters

The key industrial polluters of Bengbu Municipality are mainly distributed in the area south of the Huai River and the Bengbu Industrial Park in the west of Huaishang District (north of the Huai River). According to the list of key polluters of 2006 provided by Bengbu Municipal EPB, there are totally 33 industrial key polluters, 13 in the urban area and 20 in the three suburban counties. Their total pollutant discharge accounts for 90% of the total industrial discharge from the industries in the municipality. The details are shown in the following table.Table 44: Statistics of Pollution Discharge by Key Industrial Polluters in Bengbu

in 2006




No. Name of Industry Located District

Wastewater Discharge10,000 t/y

Discharge t/y

Pollutant Concentration

mg/l

CODcr NH3-N CODcr NH3-N

1Anhui BBCA Biochemical Co., Ltd.

Yuhui 3882.80 4950.57504.7

6127.5 13.0

2Anhui Bayi Chemical Co., Ltd.（Production Division II） Longzi La

ke307.66 307.66 46.15 100 15.0

3Anhui BBCA Fuel Ethanol Co., Ltd.

Huaishang 147.61 214.03 36.90 145 25.0

4Bengbu Tushan Thermal Power Co., Ltd.

Yuhui 543.15 461.68 8.31 85 1.5

5BBCA Biochemical Co., Ltd. No.15 Factory

Huaishang 152.00 142.24 22.80 94 15

6Bengbu Corduroy Group Co., Ltd.

Yuhui 126.15 126.15 10.01 100 8

7 Anhui Baishi Chemical Co., Ltd. Yuhui 22.80 67.26 0.09 295 0.4

8 Bengbu No.1Sewage Treat Plant Yuhui 4554.00 2385.73119.7

552 5

9Anhui Tiger Biotech Co., Ltd. Bengbu Branch

Longzi Lake

51.21 43.53 1.34 85 3

10Anhui BBCA Fuel Ethanol Co.,Ltd.

Yuhui 210.00 199.5 21.0 95 10

11Bengbu Hongye Meat Processing Complex Limited

Longzi Lake

31.00 187.24 1.62 604 5.2

12China Tobacco Anhui Industrial Corporation Bengbu Cigarette Factory

Bangshan 120.00 114.00 2.17 95 2

13Anhui Bayi Chemical Co.,Ltd.（Production Division Ⅰ） Yuhui 115.00 104.65 1.15 91 1

14Huarun Xuehua Beer Co., Ltd． (Anhui) Bengbu Branch

Huaiyuan County

126.82 164.87 2.54 130 2

15Huaiyuan County JinHuai Food Co., Ltd.

14.40 90.00 1.440 625 10

16Anhui Province Huaiyuan County BBCA Cement Co., Ltd.

0.50 0.50 100

17 Anhui Zhongyi Paper Co., Ltd. 40.20 40.20 0.129 100 0.3

18Huaiyuan County Sanlian Paper Co., Ltd.

75.80 62.46 0.299 83 0.4

19Wits Food Industry (Anhui) Co., Ltd.

5.00 5.00 100

20 Anhui BBCA Oil Co.，Ltd.

Guzhen County

21.76 17.41 0.109 80 0.5

21Guzhen County Tianyuan Chemical Co., Ltd.

3.68 1.84 0.051 50 1.3

22Guzhen County Xuyuan Liquor Co., Ltd.

73.60 69.92 0.677 95 1

23Bengbu Hongyuan Paper Co., Ltd.

35.00 33.25 0.172 95 0.5

24 Anhui Yake Beer Co., Ltd. 5.40 5.78 0.085 107 2

25Bengbu Kangsheng Paper Co., Ltd.

25.58 23.53 0.194 92 1

26 Bengbu Angle Paper Co., Ltd. 19.24 15.76 0.181 82 127 Anhui Huai Liqor Co., Ltd. Wuhe Cou 0.64 0.35 0.002 55




No. Name of Industry Located District

Wastewater Discharge10,000 t/y

Discharge t/y

Pollutant Concentration

mg/l

CODcr NH3-N CODcr NH3-N

nty

28Anhui Wan Liquor-making Co., Ltd.

80.00 75.20 12.00 94

29Anhui Hengyuan Industry Chemical Co., Ltd

0.50 0.50 100

30Anhui Province Hongyan Plastic Industry Co., Ltd.

3.50 2.45 0.088 70

31BengbuYongfeng Dyeing Chemical Co., Ltd,

10.92 9.78 0.766 90 7

32Wuhe County Jiangda Industry & Trade Co., Ltd.

127.00 247.65 15.24 195 12

33Anhui Province Xinghe Cement Co., Ltd.

2.00 2.00 0.3 100 15

Total 10932.92 10172.68 810.3

The above table shows that, in terms of the industry type, the major industries in Bengbu are chemical industry, food industry and light industry, among which the chemical industries accounts for a high proportion. However, in terms of the industry location, most of the industries with a big share in the pollutant discharge are concentrated in the urban area south of the Huai River, mostly in Yuhui District. In terms of the wastewater discharge quantity, Fengyuan Biochemical Co., Ltd. and the Bayi Chemical Co., Ltd. are the major dischargers; In terms of the discharged pollutant concentration, the chemical industries are also the major polluters. In addition, it can also be seen the wastewater discharge from the No.1 WWTP is low in the discharged pollutant concentrations and the pollutant discharge quantity despite its large wastewater discharge quantity, which indicates that the function of the wastewater treatment plant is remarkable in reducing the total pollutant quantity.

4.10.3 Industrial Polluters in Project Area

The “Urban (south of Huai River) environmental infrastructure improvement Project” includes primarily newly built and reconstructed drainage network, and also the sewage lifting PSs. The proposed network in the project is mainly the connection with the existing sewers and the existing sewage PSs. The completion of the project will greatly improve the sewage collection rate of the city and ensure the full-load operation of the WWTPs.The areas involved in the network construction include the old urban area, the Jingfa District, the Gaoxin District and the Longzi Lake District. The industrial wastewater in the area will be also sent to the WWTPs through this sewers proposed in this project, therefore it will be especially important to get the quality characteristics of the industrial wastewater in the catchments. When the industrial wastewater containing toxic and hazardous substances enters the WWTP, it may impact the normal operation of the WWTP. Therefore the main industry polluters in the project catchment and their wastewater quality are investigated during the EIA preparation. The investigation results of the industrial polluters in the project areas are shown in the Table 45.After the investigation and screening, 9 of the 35 key polluters in Bengbu will have their wastewater collected and treated with the project completion. Among others, there are 6 in the urban area and 3 in the Huaishang District. Currently these industries are all equipped with their own pretreatment facilities, and their




production wastewater is treated and discharged into the nearby water bodies after meeting the standard requirements. The wastewater of the 6 industries in the urban area can be discharged into the Huai River through Xijiagou, Baligou, Longzi Lake and Baojiagou after meeting the Class I Comprehensive Wastewater Discharge Standard (GB8978-1996). The wastewater from the 3 industries in Huaishang Disrtrict is discharged into the Beifei River and then the Huai River in Mohekou after meeting the Class II Comprehensive Wastewater Discharge Standard (GB8978-1996). The investigation results also showed that the wastewater of the above 9 industries contains no toxic and hazardous substances such as heavy metals, therefore the collection of this part of wastewater by the WWTP will not impact the normal operation of the WWTP.According to the data provided by the municipal EPB, the top 5 key polluters in terms of heavy metal discharge are distributed in the Longzi Lake District and the Yuhui District. The sewage network proposed in the project will not directly collect the wastewater from these 5 industries. However, as a result of the sewage network improvement, this part of wastewater is still possible to be collected through the improved connection and consequently influence the operation of the WWTP, such as the Weiye Heavy Industry and the Changhong Galvanize located near the Baligou Canal in Yuhui District, which are both with high wastewater and heavy metal discharge.In order to avoid the adverse effects on the operation of the WWTP, it is suggested in the EIA to treat the wastewater of the above mentioned industries separately and their wastewater could only be discharged after meeting standard requirements, but not connected to the WWTPs.




Table 45 : Wastewater Discharge of the Industrial Polluters in the Project Area

N

o

.

Industry Name Location Main Products

Wastewater

Quantity

(10000 t/y)

Pollutant

Discharge (t/y)Characteris

tic pollutant

Whereabout of Wastewater

Discharge

Comprehensiv

e Discharge

Standard

(GB8978-

1996)

Remarks

Codcr

NH3-

N

1Anhui BBCA Fuel

Ethanol Co., Ltd.Yuhui District Fuel ethyl alcohol 210 199.5 21.00 Pipe network -> Huai River Class 1

Province-

controlled

2Anhui Baishi

Chemical Co., Ltd.Yuhui District

Vanillin,

Aminomethyl zole22.8 67.26 0.09

Pretreatment -> pipe

network -> Xijiagou CanalClass 1

State-

controlled

3 Tianrun ChemicalJianghuai Rd.,

Yuhui District

O-phthalic

anhydride, PAM52.86

Pretreatment -> pipeline ->

Baligou Canal -> Huai RiverClass 1

4

Anhui Bayi Chemical

Co., Ltd.

（ Production

Division II ）

Huaibin Rd.,

Longzi Lake

District

P-nitro-

chlorbenzol,

Phenol, sodium

phenylate

307.66 307.66 46.51 TOCPipe network -> Jiaotong

Road system -> Huai RiverClass 1

Province-

controlled

5

Anhui Tiger Biotech

Co., Ltd. Bengbu

Branch

Cao Mount,

Longzi Lake

District

Feed additive, VC

phosphate51.21 43.53 1.34

Pretreatment -> Baojia

village -> Huai RiverClass 1

State-

controlled




N

o

.

Industry Name Location Main Products

Wastewater

Quantity

(10000 t/y)

Pollutant

Discharge (t/y)Characteris

tic pollutant

Whereabout of Wastewater

Discharge

Comprehensiv

e Discharge

Standard

(GB8978-

1996)

Remarks

6

Bengbu Hongye

Meat Processing

Complex Limited

Fengyang East

Rd. , Longzi Lake

District

Canned food 31.0 187.24 1.62

Pretreatment ->Longzi

River drainage PS -> Huai

River

Class 1

7

Anhui BBCA

Biochemical Co., Ltd.

No. 15 Factory

Huaiwu Rd.,

Huaishang

District

Sodium citrate 152.0 142.24 22.8

No. 1 Hebei Ditch -> Beifei

River -> Huai River at

Mohekou

Class 2Province-

controlled

8Bengbu BBCA

Gelatin Co., Ltd.

Xiaobengbu,

Huaishang

District

Gelatin, Bone glue 147.61 214.03 36.9Pretreatment -> Beifei River

-> Huai River at MohekouClass 2

State-

controlled

9

Huaneng Bengbu

Citric Acid Anhydrous

Factory

Huaishang

District

Shuangdun Rd.

Sodium citrate

Pretreatment -> the Beifei

River -> Huai River at

Mohekou

Class 2State-

controlled




4.11 Noise

4.11.1 Urban Area

4.11.1.1 Routine Monitoring Data of the Urban Area

The table below shows the monitoring data of acoustic environment obtained at the routine monitoring points in the urban area of Bengbu.

Table 46: Noise Monitoring Values of Urban Area in 2006

Unit: dB(A)

Area Range of Monitoring Value Mean

Huaishang District 50.7～66.7 53.4

GAOXIN DISTRICT 50.2～71.7 57.7

Longzi Lake District 43.6～68.3 55.4

Yuhui District 51.3～67.1 58.0

Bengshan District 50.7～67.3 60.5

Clearly the mean of the noise pollution in Bengbu can basically meet the Class II acoustic environment quality standard, but the existing noise level is obviously beyond the standard requirement, especially on both sides of the roads. The acoustic environment quality of Huaishang District and Longzi Lake District is better; however, as the old urban area, Bengshan District is crowded with narrow roads and busy traffic, and the noise level of this district is far beyond the standard. There is big difference for the noise level in the GAOXIN DISTRICT, low for the unconstructed area and far beyond the standard for the trunk roads.

4.11.1.2 Urban Roads

Below are the monitoring results of traffic noise for the major roads in the Bengbu urban area.

Table 47: Monitored Data on Road Traffic Noise Pollution in 2006 in Bengbu

Unit: dB(A)




No. Road NameSection

Length m

Road Width

m

Traffic Volume

vehicle/h

Noise Level,

dB(A)

1 Jiefang 2 Rd. 1800 28 983 71.9

2 Huai Rd. 4420 28 1441 71.3

3 Zhihuai Rd. 4400 33 1252 70.2

4 Gongnong Rd. 5120 30 1606 69.3

5 Chaoyang Rd. 6512 45 1203 69.2

6 Fengyang Rd. 5270 33 1154 68.9

7 Tushan Rd. 9540 45 1132 68.3

8 Jiefang Rd. 8405 42 812 67.9

9 Shengli Rd. 21890 40 1026 66.8

10 Hanghua Rd. 1000 25 309 66.2

11 Yanshan Rd. 8550 45 428 66.0

12 Hongye Rd. 2840 30 583 65.9

13 Donghai Ave. 21270 58 964 65.8

14 Yan’an Rd. 6382 35 1249 65.5

15 Huaguang Ave. 3700 50 724 65.4

16 Daqing Rd. 4976 45 902 61.3

From the above data, the roads in the old urban area, such as No.2 Jiefang Rd., Huai Rd., Zhihuai Rd., Gongnong Rd., Chaoyang Rd., Fengyang Rd. and Tushan Rd, have serious noise problem. The newly-built roads including Donghai Ave., Huaguang Ave., Daqing Rd. and Yanshan Rd. with broad planning red line（over 45m wide）have low-level noise pollution due to light traffic. Among the roads with the planning red line over 45m wide, only Tushan Rd. and Chaoyang Rd. go through the main urban area with heavy traffic and have a relatively-high noise level. Therefore, the traffic noise is closely related to the traffic volume.

4.11.2 Special Monitoring for Sub-projects




As the proposed BIEIP covers both the urban area and the three counties, in order to get a full understanding of the current acoustic environmental quality, some special monitoring work has been carried out for the sub-project areas on the local acoustic environment.

4.11.2.1 Tianhe

In February 2007, the Bengbu Municipal Environmental Monitoring Station was commissioned to monitor the noise level of six points around the Tianhe Lake. The monitoring results are shown in the following table.




Table 48: Noise Monitoring Results around Tianhe Lake

Unit: dB(A)

Item

1#

On Tianhe

Gate Bridge

2#

Tianhe

Fishery

North of

Tianhe

3#

Qingji

Irrigation PS

East of

Tianhe

4#

Fengdong

Irrigation PS

West of

Tianhe

5#

Gaogengqia

n Village

Irrigation PS

South of

Tianhe

6#

Shixiang

Village north

of Heihu

Mount.

Daytime 38.4 40.1 39.5 40.9 40.9 44.7

Night 36.6 37.4 36.7 37.6 36.6 39.8

Class I

StandardDaytime 55, Night 45

The noise around the Tianhe Lake and the Heihu Mount is good, compliant with the Class I standard of the Environmental Noise Standard for Urban Area.

4.11.2.2 Longzi Lake

In February 2007, the Bengbu Municipal Environmental Monitoring Station was commissioned to monitor the noise level of four points around the Longzi Lake. The monitoring results are shown in the following table.

Table 49: Noise Monitoring Results around Longzi Lake

Unit: dB(A)

Site

1#

Xingfu Village

North of

Longzi Lake

2#

Zhangjiatian

Village East of

Longzi Lake

3#

Xuqiao Village

South of

Longzi Lake

4#

Workers’

Sanitarium

West of Longzi

Lake

Class I

(GB3096-1993)

Daytime 59.4 47.5 38.5 49.7 55

Night 44.4 35.6 31.5 37.0 45

The noise level of the monitoring points are compliant with the Class I standard except the point in the Xingfu Village, which is mainly due to the noise made by the construction machinery at the entrance to the Xingfu Village as a large-scale construction project is just ongoing there.




4.11.2.3 Urban Area

On Jan. 30th and 31st 2007, Bengbu Municipal Environmental Monitoring Station monitored the noise for the relevant project areas. The monitoring results are shown in the table below.

Table 50: Noise Monitoring Results for the Project-related Urban Area

Unit: dB(A)

Monitoring PointMonitoring Results GB3096-1993 Standard

Daytime Night Daytime Night

1# Centre of Longzi Lake Industrial Park (Longjin Rd.) 45.4 47.8

Class 3, 65Class 3,

55

2# Crossing of Lilou Rd. and Donghai Ave. 60.7 54.0

3# Dingmiao Village 50.1 49.7

4# Centre of Gaoxin District (Crossing of Huangshan Rd.and

Daqing Rd.)57.9 51.3

5# Crossing of Huangshan Rd. and Ying River 60.4 52.9

6# Xiaohuangshan Village 63.7 52.4

7# Crossing of East Shengli Rd. and Zhuizishan Rd. 62.0 52.8

Class 4, 70Class 4,

55

8# Crossing of Nanhu Rd. and Xuehua Rd. 59.9 54.9

9# Crossing of No.2 Hongqi Rd. and West Surrounding Dyke 63.5 53.1

10# Crossing of Changzheng Rd. and Changle Rd. 65.7 55.7

11# Crossing of Daqing Rd. and Baligou Canal 65.8 55.3

12# Yinghu Rd. Storm Drainage PS 55.6 51.3

13# Zhihuai Rd. Storm Drainage PS 58.7 52.5

14# Nanshijia Storm Drainage PS 58.0 54.5

15# Xinchuantang Storm Drainage PS 60.0 52.0

From the monitoring results it could be seen that the noise in the project-related areas could meet the standard requirements.

4.11.2.4 Xijiagou and Baligou




On January 31, 2007, Bengbu municipal Environmental Monitoring Station monitored the noise level at two points near Baligou and Xijiagou canals. The results are shown in the table below.




Table 51: Noise Monitoring Results of around Baligou and Xijiagou Canals

Monitoring PointResults Leq[dB(A)] Class II (GB3096-1993)

Daytime Night Daytime Night time

1# Crossing of No.2 Daqing Rd. and Baligou Canal

65.8 55.3

60 50

2# Huangshan Rd. and Xijiagou Canal

60.4 52.9

As the monitoring points are close to the urban trunk road and impacted greatly by the passing vehicles, the noise levels around the project site are beyond the standard requirements to different extent.

4.11.2.5 Huaishang District

On Jan. 30, 2007, the Bengbu Municipal Environmental Monitoring Station monitored the noise level at three points around the project area. The results are shown in the table below.

Table 52: Noise Monitoring Results of Huaishang Dis.

Monitoring PointResults Leq[dB(A)]

Applied StandardDaytime Night

(1) Intersection between the planned Daqing Rd.

North and Huaibei Land (Qijiadu Village)46.0 41.9

Class II, GB3096-

93：Daytime 60dB(A)

Night 50dB(A)

(2) Big ditch of 40 m (south of Xiaobengbu Storm

Drainage Station near Huaibei Dyke)45.5 42.6

(3) Intersection between Wuxiaojie drainage and

irrigation canal and Huaibei Land.45.6 41.4

It is shown that the noise levels for all the monitoring points are compliant with the Class II standard of the Environmental Noise Standard for Urban Area (GB3096-93).

4.11.2.6 Guzhen County

For Guzhen sub-project, on Feb.1-2 and Feb.14-15, 2007, the noise levels are monitored at seven points. The results are shown in the table below.




Table 53: Noise Monitoring Results of Guzhen County

Unit：Leq dB(A)Monitoring Point Daytime Night

Site of south station in Guzhen county （intersection between

the Lao Street and Huihe Dyke） 54.0 51.6

In Xiaoloucun of Guzhen 45.2 41.1

In Qizhuang of Guzhen 42.6 42.1

No. 1 Middle School East in Guzhen county 47.2 47.2

No. 1 Middle School West in Guzhen county 43.8 43.1

Niushixiang Center in Guzhen county 54.4 51.0

Near the Furniture Factory about 10 meters along the river

embankment on the east side of Guxi Storm Drainage Station in

Guzhen county.

52.9 38.5

GB 3096-93 (Class II) 60 50

It is shown in the above table that the noise levels of all the monitoring points are compliant with the Class II standard of Environmental Noise Standard for Urban Area (GB 3096-93), except the night noise level at the point of Nieshixiang Centre. As neither industries nor ongoing projects with high noise level exist near Niushixiang, the incompliant noise might be due to instantaneous noise by the residents. The quality of the local acoustic environment is generally good.

4.11.2.7 Huaiyuan County

The Bengbu Municipal Environmental Monitoring Station conducted the noise monitoring at the four points in Huaiyuan County on February 1, 2007. The monitoring results are shown in the following table.

Table 54: Noise Monitoring Results of Huaiyuan

Monitoring SiteApplied

Standard

Results Standard Limits

Daytime Night Daytime Night

1# Site of Lizuizi PSStandard for

Class II58.2 48.1 60 50

2# Intersection between Yuwang Rd. Standard for 76.2 62.5 60 50




East and Wenchang Rd. Class II

3# Site of Laoximen PSStandard for

Class III47.1 45.5 65 55

4# About 40m to the east of

Huancheng Rd.West and 100m to

the south of Yuwang Rd. West.

Standard for

Class III58.2 48.5 65 55

It can be found from the above table that the background noise level at the 1# point is compliant with the Class II standard in the Environmental Noise Standard for Urban Area (GB3096-93); the background noise level at the 3# and 4# points are compliant with the Class III standard; however, the noise level at the 2# point is beyond the Class II standard because it is located at the crossing of the urban trunk roads and greatly influence by the busy traffic.




4.11.2.8 Wuhe Mohekou

On Jan. 30, 2007, the Bengbu Municipal Environmental Monitoring Station monitored the noise level at the four points within the Mohekou Industrial Park. The monitoring results are shown in the table below.

Table 55: Noise Monitoring Results of Mohekou Industrial Park

Monitoring PointMonitoring Results Leq[dB(A)]

Applied StandardDaytime Night

(1) Wuhe Sanpu Middle

School 44.9 41.8

Class II, GB3096-93: Daytime,

60dB(A), Night, 50dB(A)

(2) Wuhe Mohekou Middle

School 47.4 39.4

(3) Wuhe Sanpu Canal

Storm Drainage PS 45.4 41.6

(4) Open space on the

industrial avenue in Wuhe

Industry Zone

46.1 38.1Class III, GB3096-93: Daytime,

65dB(A),Night, 55dB(A)

Based on the above table, it can be seen that the noise levels at all the monitoring points are compliant with the corresponding requirements of the Environmental Noise Standard for Urban Area (GB3096-93).

4.12 Sediment Quality

As the BIEIP include several de-silting projects for the lakes, ponds and canals, and there is no routine monitoring data available for the sediment and soil in Bengbu city, some special monitoring work has been carried out extensively in the urban area and the suburban counties of Bengbu for the better understanding of existing situation.

4.12.1 Longzi Lake

The sediment of Longzi Lake mainly comes from the surrounding soil erosion and the urban pollution discharge. The north of Longzi Lake was desilted in 2005, which leaves some historical background monitoring data on the sediment of the Longzi Lake. On this basis some monitoring points are added to for the Longzi Lake sub-project.




According to the survey, the sediment in the Longzi Lake de-silted area can be divided into three layers, the contaminated layer (A), the transitional layer (B) and the normal lake sedimentary layer (C). The features of each layer are shown in the table below. Horizontally the contaminated layer in the south Lake is much thicker than that in the north lake.




Table 56: Vertical Distribution of Sediment in Longzi Lake

De-silted

AreaLayer Description

South

Lake

Area

(A)

0.10~1.1m thick, 0.5m on average, surface elevation of the sediment is 15.0~15.6m,

black and grey-black, fluid~soft plastic, a lot of organic matter mixed with bush and tree

and clam shell on the top of silt and silt clay, sand grain in some part.

(B)

0.00~1.60m thick, 0.8m on average, mud surface top elevation of 14.6~15.2m, grey-

black and grey, soft plastic~plastic, few organic matter mixed with sand and clam shell

in part.

(C)Lake sedimentary clay, yellow~brown-yellow, soft plastic on top and turning plastic

downward, mixed with sand, small stone and crushed stone.

North

Lake

Area

(A)

0.30~1.50m thick, 0.8m on average, mud surface top elevation of 14.4~15.4m, black

and grey-black, fluid~soft plastic, a lot of organic matter mixed with rotten bush and tree

and clam shell on the top of silt and silt clay, sand grain in part.

(B)

0.4~2.7m thick, 1m on average, mud surface top elevation of 14.0~15.0m, grey-black

and grey, soft plastic~plastic, silt clay bottom layer, few organic matter mixed with sand

and clam shell in part.

(C)Lake sedimentary clay, yellow~brown-yellow, soft plastic on top and turn plastic

downward, mixed with sand, small stone and crushed stone.

4.12.1.1 Historical Monitoring Data

The table below shows the routine monitoring results of sediment in the north and south areas of the Longzi Lake.

Table 57: Monitoring Results of Sediment in Longzi Lake

Unit: mg/kg (organic matter, %)

South Lake Area North Lake AreaClass III (GB15618-

1995)Layer ALayer

BLayer C Layer A Layer B Layer C

Cu 24.66 16.64 18.90 34.16 19.42 22.48 400

Pb 194.1 20.45 24.01 100.10 17.57 22.97 500

Zn 113.8 46.41 51.43 153.0 51.52 57.54 500




South Lake Area North Lake AreaClass III (GB15618-

1995)Layer ALayer

BLayer C Layer A Layer B Layer C

Cr 304.94 40.63 48.66 388.44 40.90 57.98400 (paddy field),

300 (dry land)

As 17.55 4.99 5.71 17.64 3.66 5.2030 (paddy field),

40 (dry land)

Cd 0.43 0.13 0.15 0.42 0.11 0.13 1.0

Ni 51.4 24.1 26.6 79.6 20.56 20.50 200

THg 0.05 0.02 0.02 0.21 0.02 0.02 1.5

TN — 101.53 115.74 — 87.78 109.64 —

TP — 0.02 0.02 — 0.03 0.03 —

Sulfide

(in S)32.6 0.04 0.04 40.3 0.06 0.06 —

Organic

matter2.49 0.94 0.89 3.42 0.93 0.99 —

Vertically, the concentrations of heavy metals and nutrients decrease progressively from Layer A to layer B with some increase from Layer B to Layer C. Generally Layer A contains much more pollutants than the other two layers mainly because of the external pollution, and the Layer B and Layer C are chiefly polluted by the inherent sedimentation in the soil.

4.12.1.2 Additional Monitoring

An integrated evaluation of the current sediment quality is done according to the monitoring and analysis results for the sediment of the contaminated layer (A) in Longzi Lake area in 2006 provided by the Bengbu Municipal EPB.

Table 58: Additional Sediment Monitoring Results of Longzi Lake


Hg As Cr Cu Zn Ni Pb CdOrganic

matter

mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg %




1 (Worker‘s Sanatorium West) <0.004 7.543 217 41.0 134 110 213 0.34 3.68

2 (Worker‘s Sanatorium Middle) <0.004 20.732 498 35.5 175 129 159 0.51 3.75

3 (Worker‘s Sanatorium East) 0.005 21.067 428 40.1 267 64.4 64.1 0.69 4.00

4 (Lanling Rd. West) 0.018 6.508 284 35.8 251 81.1 57.4 0.51 3.39

5 (Lanling Rd. Middle) <0.004 19.475 403 47.4 120 59.7 51.9 0.32 3.67

6 (Lanling Rd. East) 0.006 20.145 272 41.0 125 89.6 82.2 0.30 3.58

7 (Qiuqiao Village West) <0.004 23.170 146 11.6 61.8 15.2 231 0.69 3.16

8 (Qiuqiao Village Middle) 0.032 22.614 409 18.0 29.1 38.8 173 0.30 3.16

9 (Qiuqiao Village East) 0.031 21.604 259 12.5 73.0 26.0 127 0.24 2.47

10 (Longzi Lake South-West) 0.059 9.400 62 30.0 89.0 41.0 37 0.28 1.79

11 (Longzi Lake South) 0.076 5.200 58 23.0 75.0 36.0 31 0.22 1.56

From the table above it can be found that the sediment quality is compliant with the standard requirements except that the Cr content of the surface sediment exceeded the limit for dry land (but lower than that for paddy field) for the Class III standard of the Soil Environmental Quality (GB15618-1995). Generally the soil is not harmful and will not impact the plant growth and the environment. In terms of chromium distribution, the Cr concentration in the sediment of the north lake area is much higher than that in south lake area, which may result from the industrial wastewater discharge by some electronic components manufacturers in the north lake area.

According to the indicator evaluation of soil fertility, the soil with the organic matter content around 3% is considered as the soil of moderate and superior fertility, while that with the organic matter lower than 1% as the soil of poor fertility. In this way, the sediment in the southwest and south of the Longzi Lake are rated as of poor fertility and the sediment at other points is of moderate or superior fertility.

The following table shows the background soil characteristics in different provinces and municipalities all over China as listed in the Principles and Methods of Environmental Impact Assessment Technology published by the SEPA. From the table it is known that the Cd, Cr and Pb contents in the contaminated layer of the Longzi Lake are about three to five times of the background value in Anhui province and the other indicators stay at the same level.

Table 59: Background Soil Characteristics in Chinese Provinces




Unit: mg/kgHg Cd As Pb Cu Cr Zn

Anhui Province 0.029 0.083 8.5 26.0 20.2 67.0 56.3

Liaoning

Province0.032 0.084 8.6 20.7 18.5 54.4 59.1

Guangdong

Province0.056 0.04 7.1 28.9 11.4 34.8 35.8

Shannxi

Province0.021 0.089 10.8 20.5 19.5 62.0 65.8

Shandong

Province0.016 0.079 8.7 24.3 21.7 65.2 61.9

Henan

Province0.03 0.074 10.6 19.1 19.0 62.9 57.3

North Lake of

Longzi Lake0.01 0.45 15.91 104.6 40.13 350.33 178.67

South Lake of

Longzi Lake0.04 0.35 16.4 119.8 19.02 186.8 65.58

The table below shows the calculation results of the ecological risk factors and the indices for the sediment in Longzi Lake.

Table 60: Ecological Risk Factors and Indices of Heavy Metals in the Sediment of Longzi Lake

AreaEi

f

RIHg Cd As Pb Cu Cr Zn

North Lake Area 14 163 19 20 10 10 3 239

South Lake Area 55 127 19 23 5 6 1 236

It is shown that for the contaminated layer in the north lake area, the Cd content will result in the high ecological hazard. For the south lake area of the Longzi Lake, the Hg content will lead to the moderate ecological hazard and Cd great harm. Other metals will inflict slight ecological harm. As a whole, RI of the contaminated layer of sediment in the South and North Lake Areas is very close to each other and will inflict moderate ecological harm. If this part of sediment is




used for afforestation and landscaping after becoming dried in the stack yard, no adverse effect will be produced upon the vegetation.

4.12.2 Xijiagou and Baligou

On January 31, 2007, Bengbu Municipal Environmental Monitoring Station monitored and analyzed the sediment in Baligou and Xijiagou canals at two points. The results are shown in the following table.

Table 61: Sediment Monitoring Results of Baligou and Xijiagou Canals


Monitoring Point Organic Matter As Pb Hg Cr P N

1# Bridge at the

crossing of Baligou

Canal and Donghai

Ave.

2.04 10.36 35.5 0.064 34.6 1.88 75.111

2# Bridge at the

crossing of Xijiagou

Canal and Yangshan

Rd.

7.01 13.06 42.5 0.085 60.4 3.22 59.796

Class III standard

(GB15618-1995)—

30 (paddy field)

40 (dry land)500 1.5

400 (paddy field)

300 (dry land)— —

Background Value in

Anhui province— 8.5 26.0 0.029 67.0 — —

It is known as above that all the indicators of the sediment in Baligou and Xijiagou canals are compliant with the Class III standard of the Soil Environmental Quality (GB15618-1995), indicating the sediment is not hazardous for the plants and the environment. However, compared with, all the indicators are beyond the background soil value of Anhui province except the Cr content.

In terms of the soil fertility, the sediment in Xijiagou Canal is more than two times compared with the moderate and superior fertility, while the sediment in Baligou Canal is close to the moderate fertility.

The table below shows the calculation results of ecological risk factors and the indices of de-silted sediment.

Table 62: Ecological Risk Factors and Indices of Heavy Metals in Baligou and Xijiagou




Monitoring PointEi

f

RIAs Pb Hg Cr

1# (Baligou) 12.2 6.85 88.4 1.04 108.49

2# (Xijiagou) 15.4 8.15 117.2 1.8 142.55

It is known from the above table that the key pollutant in the sediment of Baligou and Xijiagou canals is Hg, which makes it ecologically hazardous.

4.12.3 Guzhen County

Sediment monitoring results for Guzhen desilting project are shown in the following table.

Table 63: Sediment Monitoring Results of Guzhen Desilting Project

Unit: mg/kg (Organic matter, %)

Monitoring Point Organic

MatterAs Pb Hg Cr P N

1# Pond on the north

side of Neilu bridge,

Niushixiang,Chengguan

town

9.78 22.32 87.1 0.108 78.0 8.10 80.588

2# West of EW ditch in

No.1 Middle School 16.82 15.75 109.2 0.152 90.3 394.67 158.125

3# Near Wangsiweizi of

the boundary ditch 5.10 6.96 30.0 0.022 80.0 71.75 25.991

Class III, GB 15618-

1995 － ≤30 ≤500 ≤1.5 ≤400 －－

Soil background value

of Anhui province － 8.5 26.0 0.029 67.0 －－

The above table shows that the sediment quality at all the points is compliant with the Class III standard of the Soil Environmental Quality for Class III (GB 15618-1995). Compared with the soil background value of Anhui province, only the Cr content is below the provincial average level. The following table shows the calculation results of the ecological risk factors and the indices of sediment.




Table 64: Evaluation of Sediment Ecological Risk

Monitoring PointEi

f

RIAs Pb Hg Cr

1# 26.3 16.8 149.0 2.3 194.3

2# 18.5 21.0 209.7 2.7 251.9

3# 8.2 5.8 30.3 2.4 46.7

Based on the evaluation as presented in the above table, it is clear that the key pollutant in the sediment is Hg, especially 1# and 2#, which means their great ecological hazards. The RI of the sediment for 1# and 2# is above 150, which represents the moderate ecological hazard of the sediment in the river and pond in the Guzhen urban area. But the RI value of the sediment at 3# is lower than 150, indicating the sediment of the suburban river has slight ecological hazard. Accordingly it is suggested that the sediment in the pond north of Neilu Bridge, Niushixiang, Chengguan town and the EW ditch of No. 1 Middle School is not suitable to be used as the soil for farmland that directly supplies food for the people.

4.12.4 Huaiyuan County

There are two storage hilly ponds involved in the BIEIP in Huaiyuan County, both of which are supplied by the water from the mountains with the similar surroundings. Therefore, the sediment in Camel Ridge Pond is sampled as the representative. As the four flood discharge ditches have similar surroundings, the flood discharge ditch of Jinshan Rd. is selected as the representative sample. The monitoring results are shown in the table below.

Table 65: Sediment Monitoring Results of Haiyuan Desilting Project

Unit: mg/kg (organic matter, ％)

Monitoring

Point

Monitoring Parameter (mg/kg)

Organic

matter, %As Pb Hg Cr P N

Center of

Camel Ridge

Pond

1.91 6.042 38.6 0.032 55.0 4.00 26.355

10m behind 0.67 4.042 29.1 0.138 46.1 3.86 23.558




the crossing of

Jinshanlu flood

discharge ditch

and

Guimenguan

flood discharge

ditch

Standard value 30 (paddy field)

40 (dry land)500 1.5

400 (paddy field)

300 (dry land)

It is known that the concentrations of As, Pb, Hg and Cr are compliant with the Class III standard of the Soil Environmental Quality Standard (GB15618-1995).

4.12.5 Mohekou in Wuhe County project

On January 30, 2007, the Bengbu Municipal Environmental Monitoring Station monitored and analyzed the sediment at two points for Wuhe sub-project. The results are shown in the following table.

Table 66: Sediment Monitoring Results of Mohekou Industrial Park

Unit：mg/kg (organic matter, %)

Sampling Point

Monitoring Parameter

Organic

matterAs Pb Hg Cr P N

Ⅰ Mochongyin River:

near the expressway 3.51 14.49 34.8 0.049 94.4 2.89 49.306

Ⅱ Sanpu canal：intersection of the Park

avenue and Sanpu

canal

2.36 15.64 34.9 0.108 90.1 2.44 37.539

Ⅲ About 200m

downstream of the

intersection of Sanpu

canal and Mochongyin

River

0.83 15.42 79.7 0.022 80.0 71.75 25.991




Standard for Control of

Pollutants in Sludge for

Agricultural use

(GB4284-84)

— 75 1000 15 1000 — —

Class III, Standard of

Soil Environmental

Quality (GB15618-

1995)

—

Paddy

field

≤30

≤500 ≤1.5Paddy

field ≤400— —

From the above table it is known that the sediment in Sanpu Canal and Mochongyin River is compliant with the Class III standard for the soil environmental quality and the Control Standards for Pollutants in Sludge from Agricultural Use（GB4284-84）, indicating the soil is generally not hazardous. The table below shows the calculation results of the ecological risk factors and the indices of the sediment.

Table 67: Evaluation of Sediment Ecological Risk for Wuhe Project

SiteEi

f

RIAs Pb Hg Cr

1# (Mochongyin River) 17.0 6.7 67.6 2.8 94.1

2# (Sanpu Canal) 31.4 9.0 251.7 3.8 295.8

It is known from the above table that the key pollutant in the sediment is Hg, which has high ecological hazard. The existing industries in Mohekou town are mainly distributed in the town area dispersedly, which include grain processing, resin, construction materials and battery manufacture. The high Hg content in the river course sediment in this area may result from the sewage discharged by the nearby industries.

4.13 Solid Waste Management

In 2005, the total domestic solid waste production of the municipality was 270,000t/y, all was dumped without any treatment due to the absence of proper facilities. The annual industrial solid waste production in 2005 was 647,600t, in which 569,800t (87.98%) was reutilized, and 4100t was properly disposed. According to the master plan, the hazardous waste would be properly disposed and reutilized, however DRA Consultant have no information on the way this done. According to the solid waste production from 2000 to 2006 shown in Table




68, both domestic and industrial solid waste shows an increasing trend, especially the industrial solid waste, which has increased by 80% from 2000 to 2005.

Table 68: Solid waste production and disposal in Bengbu (2000-2005)

Year 2000 2001 2002 2003 2004 2005 2006

Production of domestic waste (1000t) 174 226 240 240 260 270 382

Treated quantity of domestic solid waste

(1000t)0 0 0 0 0 0 213

Treatment rate of domestic solid waste (%) 0 0 0 0 0 0 55.8

Production of industrial solid waste (1000t)358.

3

400.

9

428.

0

428.

0

421.

7

647.

6NA

Reutilized quantity of industrial solid waste

(1000t)

287.

5

360.

4

316.

2

316.

2

349.

4

569.

8NA

Reutilization rate of industrial solid waste (%) 80.24 89.89 74.19 73.87 82.85 87.98 NA

Treated quantity of industrial solid waste (t) 1400 500 2500 2500 2600 4100 NA

Production of hazardous waste (t) 1400 1600 2500 2500 2600 3600 NA

In March 2006, the Phase I of Bengbu Domestic Solid Waste Sanitary landfill site was completed and immediately put into operation to meet the urgent demand. The current treatment capacity of the landfill site has reached 600t/d, which could dispose most of the domestic solid waste from Bengbu urban area, which is around 650t/d based on the 2006 data. However, according to the site visit, the existing landfill site is not yet up to standard due to the absence of proper impermeable layer and leachate treatment system. Additionally the current production of domestic solid waste now already seems beyond the original expectation, which means the 16 years’ design service life will be probably shortened by the unexpected increase of solid waste. The whole project is expected to be completed by 2008 with the treatment capacity of 1000t/d. And besides the disposal of the garbage from Bengbu urban area, the site is also proposed to be used for the disposal of some contaminated surface sediment to be desilted and the sewage sludge generated during the operation of proposed MIZ WWTP under BIEIP, which will be detailed later.

4.14 Ecological Environment

Ecological resources in Bengbu include aquatic and terrestrial ecological resources. Aquatic ecological resources are mainly in the rivers and lakes in Bengbu. The fishes include crucian carps, silver carps, carps and other fishes with




low economic value. Aquatic plants include reeds, water hyacinths, Waternut Spikesedges, water caltrops, arrowheads of Qian River and stratospheres.

Terrestrial ecological system includes the terrestrial vegetation and animal resources. The occasionally seen wide animals include hares, phasianus colchicuses, wide chickens, white storks, badgers, hedgehogs, prionailurus bengalensises, owls, golden eagles, swans, bats, mice, snakes, frogs, toads, lizards, geckos, wild geese, magpies, crows, sparrows, mallards, culvers, heron, woodpeckers and cormorants, etc.

4.15 Natural Disasters

4.15.1 Floods and Droughts

Floods and droughts are the major natural disasters for Bengbu Municipality, especially the floods. Due to its location close to the Huai River, the city is badly impacted by the frequent floods even with the improving flood control facilities. The serious flooding years include 1950, 1954, 1956, 1965, 1972, 1982, 1991, 2003 and 2005.

Table 69: Historical Flood Events in Bengbu

Year Rainfall (mm)Peak Flow

(m3/s)

Maximum Flood

Level (m)Resultant Losses

1950523

(Jun. 26th ~ Jul. 20th)8400 21.15

Most of the urban area was

flooded, and 85,000 people were

affected.

1954 487.7 (July) 11,600 22.18

The biggest flood on record since

the foundation of the P. R.C.; over

80% of the suburban area was

flooded.

1956613

(Jun.2nd ~ Jul. 1st)/ 20.9

Most of the suburban low-lying

area was flooded due to the

internal waterlogging.




Year Rainfall (mm)Peak Flow

(m3/s)

Maximum Flood

Level (m)Resultant Losses

1991713

(June & July)7840 21.98

Over 50% of the urban trunk roads

were flooded by at most 48 hours

with the deepest flooded depth of

80cm. The Benghuai Highway was

flooded by 2m for up to 40 days.

The economic loss for the urban

area was about 110million RMB,

including 60million RMB direct loss

and 50million RMB indirect loss.

2003 / 8490 22.05

It resulted in the economic loss of

420million RMB for the urban area,

especially the west part of the city

where there are many industries

and residents. It took the 7 urban

storm drainage PSs 120 days to

drain the 54million m3 accumulated

water.

2005Over 300mm for 30

town/ /

29 bridges and 34 culverts were

damaged, and the direct economic

loss was up to 35.1million RMB.

At the same time, as a part of the Huai River Basin, the city also suffers a lot from the frequent droughts, which happen once every four years by average (e.g., 1959, 1961, 1962, 1966, 1976, 1978, 1986, 1988, 1991, 1992, 1994 and 1997) and have resulted in huge economic loss due to the agricultural impacts.

4.15.2 Other Disasters

The geological hazards in Bengbu Municipality happen mainly in the areas along Huai River, including the break on banks of rivers and lakes and seepage in dykes and embankments; the activities of geological hazards in North China Plain are light. Slow variation geological hazards are the main hazards.

The main geological hazards in flood season are collapse, landslide, seepage, embankment break, which happen on the embankments of main course and branches of Huai River. The landslide and collapse are mainly along the railway, where the embankment is high. The main geological hazards in non-flood season are special rock and soil hazards, collapse of dangerous rocks in quarries. The special rock and soil hazards happen mostly in the areas along Huai River,




including oozy soft clay, expansive soil and liquefaction of sandy soil, the basement composed by this kind of rock and soil will make dangers to buildings, hydraulic engineering, railway and road engineering.

4.16 Social Environment

Bengbu has four districts (Longzi Lake, Bangshan, Yuhui and Huaishang), three counties (Guzhen, Huaiyuan and Wuhe) and two development zones (Gaoxin District and Jingfa District) under its administration, as shown in the figure below. By the end of 2005, the total population of Bengbu municipality was almost 3.5million with the growth rate of 6.55 ‰, including 920,800 (26.4%) non-agricultural population.

Figure 15: Districts & Counties of Bengbu Municipality

Bengbu Municipality is the key industrial city as well as the commercial centre and the transportation hub in the North of Anhui province. With the construction and development for many years, the economy of Bengbu has been remarkably improved. At present, an industrial system includes such trades as machine, textile, light industry, chemistry, medical, electronics, construction material etc has been formed with the processing as its leading industries. Meanwhile, three dominated industries as biological & fine industry, glass processing & advanced processing, special machine & vehicle accessories have been initially established as well.

The high-tech zone and industrial parks at all levels has been elementarily developed to offer favorable investment and business environment. Meanwhile a lot of big companies and important products have come into being, for example,




Anhui Fengyuan Group, Bayi Chemistry Group, Huaguang Glass Group, Bengbu Tobacco Company are considered as the key companies even at the state level while the predominant products as plate glass, die-casting machine, filter, corduroy ,beer, glassware, tobacco are nationally first –class with their yield and quality, moreover, the chemistry products like citric acid are taking the leading part both in output and quality in Asia. All in all, currently fine industry, glass advanced processing, vehicle accessories are three dominated industries for Bengbu with 5 companies registered in the stock market especially for Fengyuan Group which is now ranked the 1st in Asia and 3rd all over the would for citric acid production.

4.17 Cultural Archaeology Resources

As early as the New Stone Age, Bengbu was already the centre for Huaiyishi Phratry activities. And historically it is also a place of high strategic importance for military purpose. There are many cultural relics left behind including ancient relics, graves, architectures, sculptures as well as modern classical architectures and monuments. The currently discovered provincial-level cultural relics in Bengbu include the Tanghe Grave of Ming Dynasty in Longzi Lake District, Shuangdun Relics of the New Stone Age in Huaishang District, Songjiaweizi Relics for the river-crossing revolutionary war in the Yanshan village of Bengshan District, Yuwang Palace of the Tang-Qing Dynasty and Chang-family Grave of Ming dynasty in Huaiyuan County; Old Church of Qing dynasty in Huaiyuan County; Gaixia Relics and Guyang City Relics of Han Dynasty in Guzhen County, and Mohekou Toll-gate of Qing dynasty and Huamingtang Yang Grave of Ming Dynasty in Wuhe County.

However, all the above cultural relics are not within the project areas of the proposed BIEIP. And they will not be affected by the project construction and operation.




5 Project Description

5.1 Project Summary

Bengbu Integrated Environment Improvement Project (BIEIP) consists of eight sub-projects, which are summarized in the following table and figure.

Table 70: Summary of BIEIP sub-projects

Component No. Name of Sub-project Project Composition

Cost* Estimation

(million Yuan)

Integrated

Water

Resource

Management

1Tianhe flood control

project

Tianhe stormwater PS 58.39

2

Longzi Lake flood control

and environment

improvement project

Longzi Lake stormwater PS 136.82

Slope improvement and desilting of

Longzi Lake

Urban

Environmental

Infrastructure

Improvement

3

Urban (south of Huai

River) environmental

infrastructure

improvement Project

Stormwater PSs and drainage

network (including storm water and

sewage pipes) in old city

427.19

Storm water, wastewater and road

projects in Jingfa District

Storm water projects, wastewater

projects and wastewater lift PS in

High-tech Zone

Storm water, wastewater and road

projects in Longzi Lake District

4

Xijiagou & Baligou

environment

improvement project

Improvement of Xijiagou Canal 93.85

Improvement of Baligou Canal

5

Huaishang District flood

control and urban

environmental

Wuxiaojie stormwater PS and related

projects

279.86

Expansion of Xiaobengbu Station





Cost* Estimation

(million Yuan)

infrastructure

improvement project

Wangxiaogou ditch

Wangxiaogou PS

Road project

Sewage main pipe from Guobei urban

area to Huaishang

Sub-Urban

Environmental

Infrastructure

Improvement

6

Guzhen County

integrated environment

improvement project

Sewage pipes 88.38

Embankment

Desilting works

Access roads to the top of dyke

New culvert and gate

Newly constructed and reconstructed

PSs

New bridges

Slope protection and greening works

Non-engineering measures

7

Huaiyuan County


improvement project

Flood drainage canal 131.77

Storm drainage network

Stormwater PS

Road and related storm water pipes

8

Wuhe County Mohekou


improvement project

Sanpu stormwater PS and related

projects

272.50

Water supply

Wastewater treatment

Storm water and wastewater pipes

Road project





Cost* Estimation

(million Yuan)

Total 1488.76

*Note: The cost here refers to the totally cost, covering the civil works, equipments and installation, land acquisition and resettlement, other cost, contingency and loan interest during construction period.




Figure 16 : Project Overview




5.2 Description of Proposed Sub-Projects

5.2.1 Tianhe Flood Control Project

- Project objective: Improve the local flood control capacity and protect the surrounding farmland from floods with the construction of Tianhe PS;

- Project Location: in Qinji Township of Yuhui District, south of Tianhe Gate;

- Design criteria for flood control: 1:100 years for the Huai River side and 1:20 years for the inner side of Tianhe Lake;

- Project Capacity: 55m3/s with the installed capacity of 4000kw;

- The construction of the Tianhe Storm Drainage PS is to be implemented together with the reconstruction of the Tianhe Gate.

5.2.2 Longzi Lake Flood Control and Environment Improvement Project

Longzi Lake is the primary tributary in the east of Bengbu urban area, where is the newly developed urban area for the municipality. The lake has long suffered from the soil erosion, silting and flooding problems. The thick polluted sediment in the lake also results in the deterioration of overall water quality and eutrophication of the lake. Therefore, under BIEIP, the components of Longzi Lake PS, desilting and side slop improvement have been proposed to improve the overall environment of Longzi Lake.

Table 71: Composition of Longzi Lake Flood Control and Environment Improvement Project

Project Component Project ContentsCost Estimate

(million Yuan)

Longzi Lake pumping

station

Design flow rate: 40m3/s Installation capacity:

4000kw34.31

Desilting of the south

Longzi Lake

Desilting area: 3,449,000m2

Desilting engineering quantity: 2.2028 million

m3.

40.06




Side slope improvement

Total length of natural slope: 326550km

Length of ecological embankment: 2644km

Length of hard engineering embankment:

2100m

20.06




5.2.3 Urban (South of Huai River) Environmental Infrastructure Improvement Project

The urban subproject mainly aims at the improvement of existing sewage and storm drainage systems in the old urban area and the construction of new infrastructure for the new urban areas including Gaoxin District, Longzi Lake District and Jingfa District in order to provide sufficient protection for the city against floods and improve the local environment. The detailed composition of the project is shown in the table below.

Table 72: Composition of Urban (South of Huai River) Environmental Infrastructure Improvement Project

Project Compon

entProject Contents

Cost Estimate (million Yuan)

Sewerag

e system

Old city: Zhuizishan Road sewerage pipe D400, 983m, including

Yinghu Road sewerage pumping station

Gaoxin District: sewerage pipe D300-D1200, 19km

Jingfa District: sewerage pipe D300-D800, 33km

Longzi Lake District: sewerage pipe at east of Zhuizi Mountain,

D300-D800, 12km

30.45

Storm

water

system

Old city: storm water pipe D800-D2000, 8km, including 3 pumping

stations: Xinchuantang, Nanshijia and Zhihui Road

Gaoxin District: storm water pipe D600-D1800, 19km

Jingfa District: storm water pipe D400-D2200, 38km

Longzi Lake District: storm water pipe D600-D1800, 13km

106.35

Roads

Jingfa District: 30-40m wide for urban trunk road, 30m wide for

secondary trunk road and 20m wide branch road, total area:

605964m2

Longzi Lake District: Lilou Road, width: 50m, length: 1761.41m

88.95

5.2.4 Xijiagou & Baligou Environment Improvement Project

As the canals connecting with Huai River within Bengbu Municipality, Both Xijiagou and Baligou suffer from the silting problem, especially for their upstream sections, which has badly impacted their storm drainage capacity during the flooding season. Their current storm drainage capacities are both below 1:3years, which has brought enormous loss to the surrounding residents and industries. In




order to improve the situation, the following components are proposed under this subproject.




Table 73: Composition of Xijiagou & Baligou Environment Improvement Project


(million Yuan)

Xijiagou

project

Connection canal

of right branchesAlong south outer ring line

25.13Desilting, slope

improvement

Desilting of river course at south of

Xingzhong Road

Length of desilting: 5.2km,

Rubber dam At Xingzhong Road

Bridge At Xingzhong Road

Baligou

project

Desilting

Desilting from Jiangqiao Road to Huangshan

Road

Total length of desilting: 3719m

14.62

Flood control

Low-lying land at 2 sides of Baligou at south

of Tushan Road

Road at top of dyke and greening

Rubber dam At Xingzhong Road




5.2.5 Huaishang District Flood Control and Urban Environmental Infrastructure Improvement Project

Huaishang District is a recently developed urban district of Bengbu Municipality located to the north of Huai River. The proposed project is to complete the environmental infrasture of the district covering the aspects of flood control, transportation and wastewater, as detailed in the following table.

Table 74: Composition of Huaishang Flood Control and Urban Environmental Infrastructure Improvement Project


(million Yuan)

Pumping

Stations

Wuxiaojie Pumping

Station and the related

projects

Design flow rate: 80m3/s, 65.72

Xiaobengbu Pumping

Station

Current flow rate: 17.1m3/s

Flow rate after expansion: 18.19m3/s 7.23

Wangxiaogou Pumping

StationNewly built, flow rate: 16.3m3/s 7.99

Ditch of Wangxiaogou

Pumping Station

Newly excavat 3.6km ditch, desilting

5.5km ditch21.63

Road and

bridge

Binhe Road (Wuxiaojie-

North Daqing Road)Length: 10023m, width: 28m

64.31

North Daqing Road

(Branch)Length: 500m, width: 45m

Wuzhong Road

(Branch)Length: 495m, width:40m

Houlou Road ( Branch) Length:440m, width: 30m

East Zhengfu Road

(Branch)Length:440m, width: 40m

Sewage main pipe from Guobei urban

area to HuaishangDN600, length: 6810m 9.55




5.2.6 Guzhen County Integrated Environment Improvement Project

Guzhen County is currently very vulnerable to internal logging and floods due to its incomplete and low-capacity flood control system. In addition, the existing combined sewage system in its urban area still brings a lot of pollution to Huai River. Under BIEIP, the following components are proposed to upgrade the environmental infrastructure of the county.

Table 75: Composition of Guzhen County Integrated Environment Improvement Project


(million Yuan)

Flood

control and

storm

drainage

Dyke

constructionConstruct and reinforce 3.4km dyke 0.11

Desilting Length: 28.17km 2.97

Road at top of

dyke

Left dyke of Hui River: length: 8.7km, width:

6m, area: 52200m2

Right dyke of Sanba River: length: 0.8km,

width: 6m, area: 4800m2

10.26

Culvert and

gate

Construction (expansion, reconstruction) of 3

culverts and gates1.16

Pumping station

Construction (expansion, reconstruction) of 5

pumping station: Guxi, Xiwei, Dalou, Xiaolou,

Zhennan

15.24

BridgeConstruction of 3 new bridges: Linggu,

Shiliwan, Wugu0.78

Slope

protection and

greening

Left dyke of Hui River, Sanba River and other

small ditches and ponds5.78

Non-

engineering

measure

Flood control system 2.85





(million Yuan)

Urban

sewerage

network

Drainage pipe Construction (recontruction) of 9190m

sewerage drainage pipe 14.45




5.2.7 Huaiyuan County Integrated Environment Improvement Project

The project components proposed for Huaiyuan under BIEIP mainly cover the improvement of flood control system for the old urban area and the drainage & transportation system for the newly developed urban area, as detailed below.

Table 76: Composition of Huaiyuan County Integrated Environment Improvement Project

Project Component Project Contents

Cost Estimate

(million Yuan)

Drainage networkImprovement of Lizuizi, Langanqiao and Xinzhuangzi drainage networks

Total length: 6115m

21.61

Flood drainage

canal

Desilting of mountain ponds: 14724m2, desilting quantity: 22600m3,

slope protection: 1570m2, earth quantity for hightening over-flow dam:

1070m3, vegetation restoration: 1000m2

Improvement of flood drainage canal: 1680m

29.54

Pumping stations

New Lizuizi

pumping station

Design flow rate: 3.76m3/s

6.97Expansion of

Xinzhuang zi

pumping station

Design flow rate: 13.57m3/s

Road

Construction of Fuqian Avenue, Jiankang Road, Weiyi Road, Wei’er

Road, Weisan Road, Weisi Road, Changsheng Road

Total length: 7590m, total area: 219500m2, length of storm water pipes:

8224m

33.66

5.2.8 Wuhe County Mohekou Integrated Environment Improvement Project

The proposed Wuhe subproject mainly focuses on the newly developed Mohekou Industrial Zone (MIZ) and Mohekou Township by improving local flood control capacity and providing necessary environmental infrastructure in order to




facilitate the future development of the industrial park and guarantee the health & safety of local residents. The detailed components are presented as follows:




Table 77: Composition of Wuhe County Mohekou Integrated Environment Improvement Project

Project Component Project Contents

Cost Estimate

(million Yuan)

Sanpu pumping

station, desilting

of the big canal

and the

necessary

buildings

Wuxiaojie Pumping

Station and related

projects

Design flow rate: 50m3/s, total

installed capacity : 6250KW

44.32Desilting of the big

canal and the

necessary buildings

Desilting of Sanpu big canal and

Mochongyin River and necessary

buildings.

Storm drainage

system

Storm drainage

pipes in Mohekou

Drainage pipes:

D600:300m, d800: 855m, d1000:

1430ml, d1200: 4085m, d1350:

3380m, d1500: 720m, d1600:

1375m, d1800: 2060m

Box culverts:

2400X1800: 885m

2800X2000: 920m

3200X2000: 920m

3500X2000: 490m

32.64

Surface water

treatment plant

plant site

Short-term capacity: 30,000 t/d,

long-term capacity: 100,000 t/.d.

With necessary civil works

52.84

Water supply

network

Water supply main pipe along

Hanmo Road and Wubeng Road.

DN200: 6783m; DN300: 4918m;

DN400: 3392m; DN500: 526m;

DN600: 1514m; DN700: 2364m;

DN800: 773m

2 d700 PCCP, each one is 17km.

Wastewater

treatment Plant

plant site Short-term capacity: 20,000 t/d,

long-term capacity: 60,000 t/.d.

With necessary civil works

81.76




Drainage network

DN300: 7920m; DN400: 1625m;

DN500: 1615m; DN600: 3935m;

DN800: 595m; DN1000: 3750m;

DN1100: 1720m; DN1500: 70m.

Road in Mohekou

Town and

Industrial Park

West Yinhe Road 1254m×24m

16.49

Hongmiao Road 3122×12m

Jingyi Road 1150×24m

Zhongxin Road 1372×7m

Yimin Road 1481×7m

South Yinhe Road 1510×7m




5.3 Analysis of Project Pollution Sources

5.3.1 Construction Period

The factors that affect water environment are the wastewater from construction works, seepage water from the foundation pit and desilting, and domestic water from construction workers.

The main elements that influence the atmospheric environment comprise floating dust, waste gas from fuel and odor from the sediment stack yard. The influence distance of the construction stackyard is 150m while that of road and floating dust is 35~40m. The odour emitted in pond desilting and transport of sediment will exert a great effect upon the environment. In this project desilting and excavation of ditches and ponds will give off a strong odour; it will reach an intensity of Class II beyond 30 m with a slight odor, lower than the limit level of odor intensity （Class 2.5-3.5）and largely odorless beyond 50 m. The effect on the acoustic environment is exerted by the construction machinery and vehicles to and fro. If the outgoing noise at the boundary of construction site meets the standard of Noise Limits for Construction Site, the diurnal average noise influence distance during the construction period is 100m, but it will reach 350m in the pile driving stage.

The contaminated silt cleaned from the surface is carried to the sanitary landfill and filled there and the intermediate and bottom layer of the dredged silt can be utilized for afforestation and depression treatment. Before reutilization the sediment should undergo soil environmental and quality monitoring section by section. The building waste should be removed in time and the construction site should be cleaned when work is over. Stacking in situ is strictly prohibited.

The effect upon ecological environment is revealed in such aspects as land acquisition, soil erosion and influence on living things.

5.3.2 Operation Period

5.3.2.1 WTP Project

In the operation period the main pollution source comprises solid wastes （ including sludge and domestic garbage） , noise from the pump house and domestic sewage in the factory area.

The main pollutants in the domestic sewage in the water purification plant include SS, BOD5, NH3-N, phosphate, COD and animal and plant oil.




The desilted sewage produced in the sedimentation tank and back-flushing sewage produced in the back-flushing filter are discharged into the newly-built sludge concentration tank in the factory area completely （moisture content of 99%） and the condensed sludge （moisture content of 97%） will be turned into sludge cake after dewatering through the press filter in the dewaterer room (moisture content of 80%) before shipment while the supernatant of the sludge and the filtrate in the dewaterer room are returned to the absorption well for mixed treatment with the source water.

In the normal operation of the water purification plant no waste gas will be produced and only in abnormal condition will the chlorine cylinder leak.

In the water purification plant mechanical noise will come from the blower room and pump house respectively. The noise source level is 80~90 dB(A).

Solid waste mainly includes domestic garbage from workers and staff, production sludge and packing materials for dosing.

5.3.2.2 WWTP Project

During the operation period of the sewage treatment plant the main pollution source comprises solid wastes (including residual sludge, grille slags and sand), noise, domestic sewage in the factory area and odor.

Wastewater includes tail water discharged from the sewage treatment plant and domestic water in the factory area. The latter is directly discharged into the admission PS.

The odor emission facilities in the sewage treatment plant mainly cover the grille, admission PS, sand tank, bio-reaction tank, sludge concentration tank and sludge dewaterer room. In most cases unorganized emission is adopted. The characteristic odorous pollutants are H2S and NH3.

The major noise source in the sewage treatment plant is the mechanical power-operated equipment like pumps and blowers.

Of the solid waste, coarse grid slag, fine grille slag and sand are produced in a small quantity and the major solid waste is the sludge cake, which is made of residual sludge discharged from the secondary settling tank after concentrating and dewatering.

However, since the WWTP in BIEIP is proposed for an industrial park, the special characteristics of the pollutants will be taken into consideration in the EA.

5.3.2.3 Roads




After the roads in the Industry Park are open to traffic, the main pollution comes from the tail gas emitted from cars, noise made by the vehicles to and fro and pollution caused by storm runoff on the road surface.

After the road is built, the main atmospheric pollutant is tail gas from cars, which is mainly composed of hydrocarbons, NOx and CO. The spread of pollutants produced by the tail gas in the air will affect the atmospheric environment along the road. Its scope of influence is also related to the wind velocity, direction, air pressure and stability in the area apart from the traffic volume.

The effect of traffic noise is featured by linear pollution, continuity and phase and its scope of influence is related to traffic volume, current noise conditions and the standards of diurnal and nocturnal sound environment.

The pollutant concentration and discharge volume in the road storm water have something to do with the flow and type of motor vehicles in travel, rainfall intensity, cycle, road quality and fuel property, which is difficult to estimate as a rule. By analogy it is known that the pollutant concentration in the road storm water will experience a change from high to low value and will be decreased progressively after reaching the maximum value in 0～15 minutes and incline to be steady one hour after the rainfall.

5.3.2.4 Storm Drainage PSs

In this project the solid waste is divided into two parts, namely, production waste and domestic garbage from workers and staff. In the operation of storm drainage station a given quantity of waste residue will be generated as pollutant grille and cleaning device are mounted at the admission inlet to intercept leaves, branches, waterweeds, fiber, rubber, plastics and other solid floatage in the current.

5.4 Environmental Sensitive Points

The environmental sensitive points and protection targets have been identified for each sub-project. The results are shown in the following sections. And the corresponding maps are included in the Annex 1 Maps and Drawings.

5.4.1 Tianhe Flood Control Project

Due to the remote location of the proposed PS, there are only two environmental sensitive point identified as below.

Table 78: Environment Sensitive Points of Tianhe PS

Project TypeProject

ComponentSensitive Point

Location and

Distance (m)

Impacted

Population

Impact Factor




Storm

Drainage PSTianhe Gate PS

Qianying

VillageSouth, 500m 400

Noise

Tianhe Lake South, 0m /

Water

environment,

eco-

environment




5.4.2 Longzi Lake Flood Control and Environment Improvement Project

Table 79: Environment Sensitive Points of Longzi Lake Project

No. Sensitive points Type LocationDistance to the

bank (m)

Environmental

FactorsImpacted Inhabitants

1 Xingfu VillageResidential

Area

East of Zhenjiadu

Gate70

Air, noise and

trafficAbout 200 people

2 Shannan VillageResidential

Area

East bank for the

north lake of

Longzi Lake

100Air, noise and

traffic

About 30 people of the

1000 village population

3 Yuye EstateResidential

Area

East bank for the

south lake of

Longzi Lake

100Air, noise and

traffic

Resettlement will be

finished in the first half of

2008.

4 ZhangtianjiaResidential

Area

East bank for

the south lake

of Longzi Lake

100Air, noise and

traffic

5 XiaolujiaResidential

Area

East bank for the

south lake of

Longzi Lake

100Air, noise and

traffic

More than 800 people for

the whole village

6 DalujiaResidential

Area

South bank for the

south lake of

Longzi Lake

50Air, noise and

traffic

More than 1000 people for

the whole village

7 XiaozhangjiaResidential

Area

South bank for the

south lake of

Longzi Lake

100Air, noise and

traffic

About 400 people for the

whole village

8 Xuqiao VillageResidential

Area

South bank for the

south lake of

Longzi Lake

80Air, noise and

traffic


whole village

9

Xuqiao

Elementary

School

School

South bank for the

south lake of

Longzi Lake

100Air, noise and

trafficAbout 200-300 people

10 Qiuqiao VillageResidential

Area

West bank for the

south lake of

Longzi Lake

200Air, noise and

traffic


whole village

11Jinyeyuan

Residential Area

Residential

Area

West bank for the

south lake of

Longzi Lake

100 Air and noiseConstructed, currently no

inhabitant




No. Sensitive points Type LocationDistance to the

bank (m)

Environmental

FactorsImpacted Inhabitants

12 LingjiabaResidential

Area

West bank for the

south lake of

Longzi Lake

50Air, noise and

traffic

Resettlement will be

finished in the first half of

2008

13Workers’

sanatoriumSanatorium

West bank for the

south lake of

Longzi Lake

20 Air and noise150 beds, more than 60

staffs

5.4.3 Urban (South of Huai River) Environmental Infrastructure Improvement Project

Table 80: Environment Sensitive Points of Urban (South of Huai River) project

ProjectProject

ComponentSensitive Points

Impacted

Population

Estimation

Direction DistanceImpact

Factors

Network

project

of old

urban

area

West Shengli

Rd.Tiandiren Garden 250 South 10 m

Noise and

dust during

the

construction

period

Zhucheng Rd. Chengjian Apartment 80 10 m

West Shengli

Rd., Nanshan

Rd.

Buildings No.65, No.66,

No.77, No.88, No.119,

No.133, No.168

700

Both

sides of

the road

10m

Railway Gongwuduan

Compound60 North 10 m

Guwan Residential Area 90 South 10 m

Nanshan Rd.,

Zhongrong St.

Building No.31 90 North 10 m

Multi-building of Bengbu

Vacational Education Center250 East 10 m

Jianguo Rd. Residential Area 250West,

north10 m

East Shengli

Rd.

Sunying Village 400 North 20 m

Sunying Elementary School 500 South 50 m

Hongqier Rd. Sijiyangguang Garden 50 South 10m




ProjectProject


Impacted

Population

Estimation


Factors

Gongnong Garden 800 North 10m

Hongqier Rd.,

Yongye Rd.

Building No.260 140 South 10m

Noise and

dust during

the

construction

period

Bengbu No.35 Middle School 400 North 50m

Xinfeng Residential Area 900 North 20m

Hongqili Residential Area 250 South 20m

Dabanlou Residential Area 150 East 10m

Bengbu Railway No.3

Elementary School400 East 50m

Yongye Rd.,

Changzheng

Rd.

Kindergarten of Bengbu

Railway No.3 Elementary

School

100 East 50m

Hongye No.1 Village 100 West 20m

Shenxu Village 80 East 10m

Zhanggongshan Estate 100 West 20m

Changqing Residential Area 250 East 20m

Changzheng

Rd., Daqinger

Rd.

Daqing St. Residential Area 200 East 20m

Dormitory of Machine tool

factory50 South 20m

Bali Estate 60 South 10m

North

Changqing

Rd., Nanhu

Rd.

Daqing Estate 360 East 10m

Xiaoxingzhuang Yandun

Village200 2 sides close

North

Changqing Rd.

Xuehua Rd. North Residential

Area70 West 20m

Nanhu Rd.,

East Shengli

Shangtie Nanhu Residential

Area100 East 20m




ProjectProject


Impacted

Population

Estimation


Factors

Rd., Baota Rd.

312 Geological Prospecting

Team Residential Area60 East 20m

Sunying Village, Dingmiao

Village, Chaoyang Village600

At least

5m

312 Geological Prospecting

Team Residential Area60

Network

in Longzi

Lake

District

Guxin Rd.

Sunying Village, Dingmiao

Village, Chaoyang Village600

Both

sides of

the road

5m-20m

Noise and

dust during

the

construction

period

Xiyan Rd.

Shiwu Rd.

Donghai

Avenue

Lilou Rd.

Waihuan Rd.

Huangshan Village, Qinji

Town, Dongzhou Village1000

Longjin Rd.

Longshan Rd.

South outer

Ring Rd.

Jiangqiao Rd.

Network

in the

Gaoxin

District

Weier Rd. Huangshan Village, Qinji

Town, Dongzhou Village

Some inhabitants of water

treatment plant

1000 South

West

20m-40m Noise and

dust in the

construction

period

Huangshan

Ave.

Xingji Rd.

Yanshan Rd.

Qinji Rd.

Yuhui Rd.




ProjectProject


Impacted

Population

Estimation


Factors

Jianghuai Rd.

Tianhe Rd.

Daqing Rd.

Jiahe Rd.

South

Changqing Rd.

South

Changzheng

Rd.

Youyi Rd.

Bengxi Rd.

Xinchuantang

PS

Bengxi Rd.

PS

Zhihuai Rd. PS

Yinghu Rd. PS

Residential buildings 50 East 30m Noise and

dust during

the

construction

period

Noise

during the

operation

period

Jiancha Estate 100 East 10m

Zhihuai Rd. PSNo.2 Hospital of Bengbu

Medicine University300 North 100m

Nanshijia PS

Xinying Rest House 20 West 20m

Scattered residential

buildings50 North 20m

5.4.4 Xijiagou & Baligou Environment Improvement Project

Table 81: Environment Sensitive Points of Xijiagou and Baligou Project




Area No. Sensitive Points Location Distance Environment

Factors

Remarks

Xijiagou

Canal

1

The PLA Auto

Management

Institute

Xijiagou Canal goes

through this

institute.

—Air, noise and

traffic

2

Bengbu Navy

Petty Officer

School

At west of Xijiagou

Yanshan Road

Bridge

100m Air and noise

Only one 3-floor

building and one 2-

floor building face to

the canal

3

Yinghe Bridge

Elementary

School

At east of Xijiagou

Yanshan Road

Bridge

30mAir, noise and

traffic

Only one residential

building facing the

canal.

4 Jinxu Village

At east of Xijiagou

Yanshan Road

Bridge

5mAir, noise and

traffic

5Tangjiahu

Village

At south of Xijiagou

Yanshan Road

Bridge

100mAir, noise and

traffic

5.4.5 Huaishang District Flood Control and Urban Environmental Infrastructure Improvement Project

Table 82: Environment Sensitive Points of Huaishang Project

No. Sensitive pointsImpacted

PopulationLocation

Impact factors

Construction

period

Operation

period

1 Shanxiang Village 280

Within 30m

north of Binghe

Road

Noise and

dust

Exhaust of

vehicles

Traffic

noise

2 Lutai Village 320

3 Houlou Village 320

4 Xiaobengbu Village 180

5 Chentai Village 380

6 Gaoan Village 280

7 Zhaosong Village 300

8 Wuan Village 330

9 Fanggou Village 640

10 Shaoying Village 24011 Mazuizi Village 100

12 Zhengjiadu Village 350

13 Wuxiaojie Village 250




5.4.6 Guzhen County Integrated Environment Improvement Project

Table 83: Environment Sensitive Points of Guzhen Project

Component Project ContentsSensitive

points

Impacted

PopulationLocation Distance Impact Factors

Desilting Daoban Canal County

crematorium

30 South 8 m

Noise and dust during

the construction period

South City

Drainage Canal

Scattered

residential

buildings

100 South 30 m

East and west

canals of No.1

Middle School

Guzhen No.1

Middle School

5200 East,

west

close

East and west

canals of Party

School

Scattered

residential

buildings

1000 South,

north

At least

10 m

Wangnan Canal Armed Police

Elementary

School

500 North 5 m

Xubei Canal Farmers’

houses

100 South,

north

15 m

Road at top

of the dyke

Left dyke of Hui

River

Houses of

Mengzhuang

Village

30 West 50 m Noise and dust during


Pumping

station

Renovation and

reconstruction

Guxi Pumping

Station

Small furniture

factory

20 East 10 m Noise and dust during


Noise during the

operation period

New South City

Pumping Station

Residential

buildings

100 South,

north

30 m Noise and dust during


Noise during the

operation period





points

Impacted


Urban

wastewater

network

New sewer for

Daying Road

Party School 100 North 7m Noise and dust in the

construction period6 residential

buildings

400 South 7m

New drainage

pipes for Shengli

Road and

Miaogang Road

Guzhen No.2

Middle School

6000 West 6m

Guzhen No.2

Elementary

School

1500 West 6m

3 residential

buildings

200 East,

west

6 m

Trunk sewer for

Guyang Road

Huaying

Senior High

School

550 North 10 m

Fengze

Garden

Residential

Area

200 North 10 m

Guzhen

County

People’s

Hospital

North

Guzhen

County

Chinese

Traditional

Medicine

Hospital

South 10 m

Shiyan Middle

School

2850 South 10 m





points

Impacted


Mingren

Garden

Residential

Area

North 10 m

Sewage main

pipe from Sanba

River to WWTP

Wafang

Village

Both

sides

50～100

m

Improvement of

canal and pond

and

reconstruction of

pipes and

culverts near the

old street

Inhabitants

near the

Chengguan

Town canal

culvert

10000 － close Noise, dust and odor

in the construction

period

Guzhen No.2

Middle School

5000 East,

west

close

5.4.7 Huaiyuan County Integrated Environment Improvement Project

Table 84: Environment Sensitive Points of Huaiyuan Project

Project Sensitive points Impacted Population Location

Impact Factors

Construction period

Operation period

Road and

network project

for Chengguan

Town Food

Processing

Park

Pangying

Village600

In 100m of south and

north sides of

Jiangkang Road

In 100m of east and

west sides of

Changsheng Road

Noise and

dust in the

construction

period

Traffic

noise

Exhaust

of

vehicles

Fanyingzi

Village

250 40m south of Weiyi

Road, 65m at east of

Zhongsheng Road





Impact Factors

Construction period

Operation period

Huangyingcun

Village220

70m at east of

Changsheng Road,

100m at south of Weiyi

Road

Tangyingzi

Village200

85m at north of Weier

Road, beside

Changsheng Road

Meiying Village 2000

130m at south of Weier

Road, 130m at west of

Changsheng Road

Desilting of

Luotuoling

Pond

Longtou Village 1500 Within 200m around

Tuoluoling Pond

Noise and

dust

Nothing

Desilting of

pond of

Chinese

Traditional

Medicine

Hospital

Residential

buildings of

Chinese

Traditional

Medicine

Hospital

120Within 200m north of

the pond

Desilting of

flood drainage

canal at foot at

west of Jing

Mountain

20 households 130

Within 200m on both

sides of the draiange

canal

Improvement

of networks of

WWTP

No.4 Middle

School190

In 200m at south of

Jiangkang Road

network

Noise and

dust

Inhabitants of

Yongping Street

1700 Both sides of the street





Impact Factors

Construction period

Operation period

Inhabitants at 2

sides of Jinshan

Road (at south

of No.1 Middle

School)

2100

Both sides of Jinshan

Road flood drainage

canal

No.1 Middle

School500

Both sides of Jinshan

Road flood drainage

canal

Party School 52East section of Yuwang

Road

New Lizuizi PS

Scattered

households

nearby

30Within 100m west of the

PS

Noise and

dustNoise

Expansion of

Xinzhuangzi

PS

Scattered

households

nearby

80In 100m at south-west

of pumping station

Noise and

dustNoise

5.4.8 Wuhe County Mohekou Integrated Environment Improvement Project

Table 85: Environment Sensitive Points of Wuhe Mohekou Project

No. Sensitive Points Distance

Impact Factors

RemarksConstruction

Period

Operation

Period

1 Sanpu VillageBoth sides of

Wubeng Road

Noise and

dust

Vehicle

exhaust

and noise

About 3000 people will be

impacted by the desilting,

network and road

projects.

2

Sanpu

Elementary

School

100 north of

Wubeng Road

Noise and

dust

Vehicle

exhaust

and noise

1620 teachers and

students will be impacted

by the road project.





Impact Factors

RemarksConstruction

Period

Operation

Period

3

Tuanjie Hope

Elementary

School

50m north-

west of

crossing of

Hanmo Road

and Wubeng

Road

Noise and

dust－

289 teachers and


by the network project.

4Anzikou Village

Yuanji Village

Both sides of

intake pipe of

Huaihongxin

River and

Xiangjian Lake

Noise and

dust－ Impacted by the network

project

5

Xiaoshijia

Village

Lijiawa Village

100m at south-

east of

crossing of

Hanmo Road

and Wubeng

Road

Noise and

dust

Vehicle

exhaust

and noise

200 people of Xiaoshijia

Village and 200 people of

Lijiawa Village will be

impacted by the road

project.

6

Management

Commission of

Senior Citizen

Home

20m east of

Hanmo Road

Noise and

dust

Vehicle

exhaust

and noise

About 35 people in the

senior citizen home will

be impacted by the road

project.

7

Mohekou

Gongjian

Hospital

20m east of

Hanmo Road

Noise and

dust

Vehicle

exhaust

and noise

Design quantity of beds is

for 50 people. Impacted

by the road project.

8Mohekou PS

Courtyard

10m east of

Mohekou PS

Noise and

dustNoise

About 50 employees and

their relatives will be

impacted by the desilting

and pumping station

project.

9Mohekou Middle

School

100m at west

of Sanpu Big

Canal

Noise and

dust－

1260 teachers and


by the desilting and

pumping station project.





Impact Factors

RemarksConstruction

Period

Operation

Period

10 Mohekou Town

At west of

Sanpu Big

Canal

Noise and

dust—

About 3000 people in the

whole town




6 Environmental Impact Analysis

6.1 Impact Screening

Impact screening for the construction and operation periods of the BIEIP sub-projects is attached to this report in the Annex 3.

6.2 Project Benefits

6.2.1 Environmental Benefits

6.2.1.1 Storm Drainage PSs

Of the eight sub-projects financed by the World Bank loan, there includes the construction, reconstruction or expansion of 16 storm drainage PSs, which are distributed all over the Bengbu urban area and its three suburban counties. Among others, there are five located to the south of the Huai River and eleven to the north of the Huai River as shown in the following figures and the Table 87.

Figure 17: Proposed Storm Drainage Pumping Stations in the urban area, Huaiyuan County and Wuhe County and their Catchments




Figure 18: Proposed Storm Drainage Pumping Stations in Guzhen County and their Catchments

Table 86: List of Storm Drainage PSs to be Constructed and Reconstructed

No. PS Name Location Service area

1 Xinchuantang Storm Drainage PS

Urban AreaSouth of Huai River, east of Xijiagou

Canal2 Zhihuailu Storm Drainage PS

3 Nanshijia Storm Drainage PS

4 Tianhe Storm Drainage PSYuhui

District

South of Huai River, west of Baligou

Canal

5 Longzi Lake Storm Drainage PSLongzi Lake

District

South of Huai River, the catchments

east and west of Longzi Lake

6Beifeihe (Wuxiaojie) Storm

Drainage PS

Huaishang

District

North of Huai River, the catchment

south of Beifei River in Huaishang

District7 Xiaobengbu Storm Drainage PS

8 Wangxiaogou Storm Drainage PS




No. PS Name Location Service area

9 Sanpuhu Storm Drainage PS

Mohekou of

Wuhe

County

Mohekou Town and Sanpu Lake Area

north of Huai River

10 Lizuizi Storm Drainage PSHuaiyuan

County

Chengguan town and the adjacent area

of Huaiyuan County north and west of

Huai River11 Xinzhuangzi Storm Drainage PS

12 Guxi Storm Drainage PS

Guzhen

Chengguan

Town,

Southwest

suburbs

Chengguan town and the adjacent area

east of Huihe River

13 Xiwei Storm Drainage PS

14 Dalou Storm Drainage PS

15 Xiaolou Storm Drainage PS

16 Chengnan Storm Drainage PS

According to the distribution of storm drainage PSs in this BIEIP, it is evident that with the construction of the 16 storm drainage PSs, the flood drainage capacity for the Bengbu urban area, the township of Guzhen and Huaiyuan County and the Mohekou area of Wuhe County will be greatly improved.

6.2.1.2 Sewage Network Improvement

Currently the only WWTP under operation in Bengbu Municipality, the No.1 WWTP, is just treating 130,000~140,000m3/d wastewater, still far beyond its 200,000m3/d treatment capacity. Although investing on the scattered sewage pipelines, the proposed Urban (south of Huai River) environmental infrastructure improvement Project intends to link up the disconnected existing sewage pipelines and complete the sewage system for the No.1 WWTP catchment, thereby to significantly improve the sewage connection and treatment rate. Especially the proposed pipelines in the Jingfa District and the Gaoxin District will directly increase the sewage collection quantity of the No. 1 WWTP (Xijiagou). For example, the construction of the Zhihuai Rd. sewage lifting PS and the corresponding network in its catchment could directly increase the collection of urban wastewater by 30,000m3/d, all of which will be transmitted to the No.1 WWTP to alleviate the current insufficiency of wastewater collection.

As a whole, the completion of the BIEIP could increase almost 50,000m3/d wastewater for the No.1 WWTP, which could increase the operating load of the WWTP up to 180,000~190000 m3/d and basically realize the full-loaded operation of the No.1 WWTP, so as to significantly reduce the total pollutant discharge into




the Huai River. By calculation, the actual reduction of pollutants due to the increase of collected wastewater is projected as follows: CODcr 3650t/y. and NH3-N 730t/y, which also shows the significant environmental benefits of the urban sewage network improvement project.

Also the wastewater and storm drainage network improvement in Guzhen, Huaiyuan and Wuhe will provide the support to the normal operation of local WWTPs, improve the water quality of local rivers by wastewater interception, such as the Sanba River in Guzhen County, and also improve the local flood control capacity.

6.2.1.3 Total Pollutant Discharge Control by Urban Drainage Project

The construction of the urban drainage system will improve the sewage collection rate. Together with the construction of the WWTPs, the urban sewage treatment rate will be correspondingly improved. By 2010 three WWTPs are planned to be completed in the urban area of Bengbu Municipality, which are respectively the No.1 WWTP (Xijiagou), the No.2 WWTP (Yangtaizi) and the No.3 WWTP (Huaishang). Therefore, for the estimation of the total pollutant discharge for the Bengbu urban area, three scenarios have been analyzed: a) Only the existing 100,000m3/d treatment capacity of the No.1 WWTP under operation; b) The Phase 2 of the No.1 WWTP has been put into operation, which increases the total wastewater treatment capacity of the city to 200,000m3/d; c) The Phase I of the No.2 WWTP (100,000m3/d) and the No.3 WWTP (25,000m3/d) completed, which increases the total wastewater treatment capacity of the city to 325,000m3/d. The indirect environmental benefits of the network construction will be realized with the completion and operation of the supportive WWTPs.

Table 87: Estimated Annual Pollutant Discharge for Bengbu Urban Area for 2010

Planning

HorizonScenario

Total

Wastewater

Discharge

m3/d

Treated

Wastewater

m3/d

Untreated

Wastewater

m3/d

COD

Discharge

t/y

COD

Discharge

Variation

%

NH3-N

Discharge

t/y

NH3-N

Discharge

Variation

%

2005 Baseline 295,000 100,000 195,000 20115 / 3713 /

2010

a) 494,000 100,000 394,000 37778 +87.8% 6654 +79.2%

b) 494,000 200,000 294,000 30478 +51.5% 5194 +39.9%

c) 494,000 325,000 169,000 21353 +6.2% 3369 -9.3%




From the above data it is clear that with the rapid population growth and economic development, the wastewater generation of the Bengbu urban area will increase dramatically by 67.5% compared with the 2005 figure. , the sewage volume in the urban district of Bengbu will increase by 67.5% over 2005. The implementation of the urban drainage projects will significantly increase the wastewater collected by the network and discharged into the Huai River. As a result, the total pollutant discharge will dramatically increase if without the construction of the supportive WWTPs. If by 2010 the current sewage treatment capacity of the No.1 WWTP remains unchanged at 100,000 m3/d, then the total COD discharge will rise by 87.8% and the NH3-N discharge by 79.2% compared with the 2005 level; However, if by 2010 the Phase I of the Yangtaizi and Huaishang WWTPs are put into operation as scheduled, the COD discharge will rise only by 6.2%, close to the 2005 level, and the NH3-N discharge will decrease by 9.3%. It is evident that only the synchronization between the urban drainage system and the wastewater treatment projects could exert the pollution control effects and realize the actual environmental benefits.

6.2.1.4 Total Pollutant Discharge Control of Mohekou WWTP

The total volume of industrial wastewater from the Mohekou Industrial Park is projected to be 30,000m3/d; If the wastewater is self-treated by the industries, then the discharge standard is 100mg/L for COD and 15mg/L for NH3-N (Class I of the Comprehensive Wastewater Discharge Standard) (Scenario A); If a centralized WWTP is built for the park, the production wastewater from all the industries in the Park will be sent to the WWTP after pretreatment, and the discharge standard for the WWTP into the Huai River is 50mg/L for COD and 5mg/L for NH3-N (Class 1A of the

Pollutant Discharge Standard for urban WWTPs) (Scenario B). In this way, the variation of the total pollutant discharge before and after the WWTP completion is shown in the following table:

Table 88: Reduction of Total Pollutant Discharge by the WWTP for Mohekou Industrial Park

Item

Scenario

Wastewater

Quantity

m3/d

COD NH3-N

Concentratio

n

mg/l

Discharge

t/y

Concentratio

n

mg/l

Discharge

t/y

Scenario A 30000 100 1095 15 164.25

Scenario B 30000 50 547.5 5 54.75

Reduction Percentage for / / 50% / 66.7%




the total volume, %

It is clear that for Mohekou Industrial Park, the centralized treatment of industrial wastewater to the Class 1A standard of the Pollutant Discharge Standard for urban WWTPs

will cut off the COD discharge by 50% and the NH3-N discharge by 66.7%.

6.2.1.5 Desilting Projects in BIEIP

There are many desilting projects included in the BIEIP covering the urban area and the three counties, as shown in the following figure. And the environmental benefits of these projects are summarized in the Table 89.

Table 89: Summary of Major Environmental Benefits for Desilting Projects

Project NameWater Quality

Improvement

Local

Ecological

Improvement

Increase of

Storm

Drainage

Capacity

Landscape

Benefit

Longzi Lake Desilting √ √ X √

Desilting of Xijiagou and

Baligou Canals√ √ √ √

Desilting of Ditches and

Canals in Huaishang Dis.X X √ X

Desilting of Flood Discharge

Ditch in Guzhen County√ X √ X

Desilting of Flood Discharge

Ditch in Huaiyuan CountyX X √ X

Desilting of Sanpu Great

Ditch in Wuhe CountyX X √ X

Especially for the Longzi Lake, with the sewage interception around Longzi Lake and the construction of the WWTP, the nutrient salts in the lake sediment will become the primary water pollution source and the dominant factor for the lake eutrophication. The construction of this project can a) increase the storage capacity of the lake by 1.15million m3, b) eliminate the non-point pollution by the contaminated sediment of Longzi Lake, and improve the water quality and the self-purification capacity of the lake, c) improve the aquatic environment and promote the growth and reproduction of aquatic organisms by removing the toxic




and hazardous substances originally existing in the sediment. The desilting of Longzi Lake, together with the bank greening, the ecological environment around the project site will be improved significantly. Moreover, for the east and west banks of Longzi Lake, the landscape with the lakeside characteristics will provide a relaxing place for Bengbu citizens and upgrade the overall image of the city.

As the primary tributaries of the Huai River, the Xijiagou and Baligou canals have been badly polluted by the surrounding industries and the wastewater from the nearby farmland. The desilting project, together with the improvement of the urban sewage treatment systems and the sewage interceptors along the canals, will dramatically decrease the pollutants discharged into the canals, improve the local water and ecological environment quality and consequently the water quality of the Huai River.

The desilting projects in Huaishang District, Guzhen County, Huaiyuan County and Wuhe County mainly aim at the increase of the local drainage capacity and complete the flood control system.

6.2.1.6 Greening Projects for Longzi Lake and Xijiagou & Baligou Canals

The greening projects in the BIEIP mainly refer to the slope greening of the Longzi Lake and the Xijaigou and Baligou Canals. Their ecological benefits are manifested in the following aspects:

- Beautify the local landscape;

- Abate the soil erosion due to the earth exposure and the side slope collapse;

- For the Longzi Lake, the slope greening will increase the green area around the lake, which will provide a good habitat for the growth and restoration of lakeside biological communities so as to increase the local community biomass and improve the biodiversity;

- For the Longzi Lake, the vegetation around the lake will prevent the surface runoff from the surrounding farmland and thus decrease the pollutants in the agricultural wastewater discharged into the Lake.

6.2.2 Social Benefits

6.2.2.1 Water Resource Project

The water resource projects in BIEIP mainly refer to the construction of storm drainage PSs and the desilting of ditches and canals in different catchments, which will effectively raise the flood control criteria and the flood control water levels of their service areas to effectively protect the safety of the Bengbu urban




area and the agricultural production of the neighboring suburban counties. The residents, industries, villages and farmland within the catchments will no longer suffer from the frequent floods, so as to protect the safety of local people & properties, the industrial & agricultural development and the economic benefits for the project area to some extent.

In addition, the desilting projects could also provide an entertainment site for the Bengbu citizens and upgrade the scenery image of the whole city, especially for the Longzi Lake.

6.2.2.2 Drainage System Projects

The construction of the urban drainage system will:

- Provide the good municipal infrastructure and strengthen the local investment attraction for the development of new urban area, including the Gaoxin District, the Longzi Lake District and the south city area;

- Promote the formation of the four sewage systems for the Bengbu urban area in order to reach the planning targets and realize the environmental benefits of the wastewater treatment projects.

Also the drainage network improvement in Guzhen, Huaiyuan and Wuhe will complete the local infrastructure construction to promote the local investment attraction, especially for the Mohekou Industrial Park.

6.2.2.3 Construction of Mohekou Industrial Park

As the provincial-level development area, the Mohekou Industrial Park in Wuhe County is planned to become an important industrial base for fine chemicals and a modern eco-industrial park in Anhui Province. However, since it is located in the Sanpu Lake low-lying area without sufficient flood control and infrastructure facilities, the park suffers a lot from the frequent floods and the park development is therefore constrained.

The BIEIP will construct the wastewater and storm drainage network, a WTP and a WWTP for Mohekou Industrial Park. The project completion, together with the construction of the Sanpu Lake PS, will greatly improve the local flood control and storm drainage capacity, effectively protect the construction and development of the park, and significantly improve the investment attraction capability and hardware foundation of the park.

The proposed WTP and WWTP will not only serve the industries in the park, but also the residents of the Mohekou Township therefore to promote the sustainable development of the whole area.




6.2.2.4 Road Project

The road projects in the Jingfa District, Huaishang District, Mohekou Industrial Park, Huaiyuan and Guzhen will improve the infrastructure level of the project areas, facilitate the local transportation both for residents and good supplies, beautify the urban landscape, upgrade the overall image of the urban area and promote the investment attraction and the park development.

6.2.3 Economic Benefits

The economic benefits of the proposed BIEIP are mainly reflected by the consequent reduction of economic loss from flooding, the increase of land value with the environmental improvement, and the increase of collected tariff revenue due to the expansion of sewage network coverage and the construction of MIZ WTP and WWTP. In the following paragraphs, the economic benefits resulted from the construction of Tianhe storm PS, MIZ WTP and WWTP are analyzed as the examples.

6.2.3.1 Disaster-reducing Benefits of Tianhe Storm Drainage PS

For Tianhe Storm PS, the economic benefits of the project are mainly exhibited in the resultant reduction of economic loss during future floods. With the completion of Tianhe PS, 15000mu of farmland and 35 villages will be protected against flooding in 1:20years flood. According to the preliminary economic analysis, the yearly indirect economic benefits from the decrease of flooded area will amount to at least 10million yuan, accounting for 14.9% of the project investment. In other words, the investment can be recovered in seven flooding years.

6.2.3.2 Economic Benefits of Mohekou WTP

The proposed Mohekou WTP will supply both the residents in Mohekou Township and the industries in the MIZ. According to the master plan for 2010, Mohekou Township will have a population of 35000 with the domestic water demand of 14600m3/d and the industrial water demand of 21400 t/d; Based on the current price of tap water (1.35yuan/t for industrial water and 1.1yuan/t for drinking water), the estimated benefit after of the project after the deduction of payable water resource fee will amount to 13.568 million yuan/y, accounting for 21% of the investment. In other words, the collection of five years’ water tariff after the project completion will be equal to the construction investment.

Table 90: Estimated Benefit from Water Supply by Mohekou WTP

Type of water Consumption

m3/dPrice Total Charges for Water




yuan/ m3 Supply, million yuan/y

Industrial water 21400 1.35 10.55

Domestic water 4600 1.1 1.85

Other purpose 4000 1.25* 1.825

Total 30000 14.225

Water resources

charge30000 0.06 0.66

* Average price

6.2.3.3 Economic Benefits of Mohekou WWTP

The proposed Mohekou WWTP will serve both the industries in MIZ and the residents in Mohekou Township. On the basis of the water demand projection and the wastewater coefficient of 0.85, the sewage treatment quantity is estimated to reach 22100m3/d. Based on the current WWTP tariff (0.7yuan/m3 for industrial wastewater and 0.6 yuan/ m3 for domestic sewage), the economic benefits of Mohekou WWTP will come to 7.235million yuan/y, accounting for 5.9% of the investment. After deducting the O&M cost, the annual benefit will come to 1.535million yuan, indicating the economic benefit is very low, which can only maintain its normal operation as its environmental and social benefits are dominant.

Table 91: Estimated Operational Benefits of Mohekou WWTP

Type of water Consumption

m3/d

Price

yuan/m3

Total Charges for Water

supply, million yuan/y

Industrial wastewater 18200 0.7 4.65

Domestic sewage 3400 0.6 0.745

Other wastewater 8400 0.6 1.84

Total 30000 / 7.235

Operating cost of

Sewage Plant

30000 0.52 5.70

6.3 Environmental Impacts during Construction Period




The construction period of the proposed BIEIP is estimated to be as long as 30~48 months, and there are many residential areas (environmentally sensitive points) around the project sites, especially for the urban drainage network projects. According to the project characteristics, the major potential impacts during construction period may cover the aspects of air, noise, water, soil, road traffic, ecology and land use, which are detailed in the following sections.

6.3.1 Impacts on Air Quality

During the project construction, the air pollution sources mainly include flying dust, odor, and exhaust gas from fuel combustion

6.3.1.1 Impacts by Flying Dust

The flying dust during the construction is mainly generated from:

- Mixing of concrete on site, stacking of bulk powder materials and the ground exposure during construction;

- Transportation by vehicles and construction machineries;

- Drifting, scattering and flying of the earth loaded in vehicles and bulk construction materials during the transportation, loading and unloading;

- Temporary sand and stone stacking along the road side, road surface clearing during the construction.

Generally the flying dust from transportation and at the construction sites is the major air pollution source during construction, as analyzed below.

- Flying dust from transportation

The flying dust from transportation is mainly concentrated in the access roads and the major roads for transportation in the project sites, which accounts for over 60% of the total flying dust. The dust quantity can be calculated according to the following empirical formula for the completely dry weather:

Where Q——dust from running vehicles, kg/km•vehicle;

V—— speed, km/hr;

W—— load, t;

P——dust volume on the road surface, kg/m2。Table 92 shows the dust quantity of a 10t truck that passes through a 1km long road with different cleanness levels and at different speed. Therefore, for the road




of the same cleanness level, the faster the vehicle is, the more dust quantity it generates; however, at the same speed, the dirtier the road is, the more dust quantity it generates. Therefore setting the speed limit and keeping the road clean is the effective means to reduce the dust from transportation.

Table 92: Dust Generation by Vehicles at Different Speed and with Different Ground Surface Cleanness

Unit: kg/vehicle•kmP

Speed0.1(kg/m2) 0.2(kg/m2) 0.3(kg/m2) 0.4(kg/m2) 0.5(kg/m2) 1.0(kg/m2)

5(km/h) 0.051056 0.085865 0.116382 0.144408 0.170715 0.287108

10(km/h) 0.102112 0.171731 0.232764 0.288815 0.341431 0.574216

15(km/h) 0.153167 0.257596 0.349146 0.433223 0.512146 0.861323

25(km/h) 0.255279 0.429326 0.58191 0.722038 0.853577 1.435539

The dust generated at the construction sites is mainly from the open dump site and the site exposure. The quantity in the dry and windy weather could be calculated according to the empirical formula below:

Where Q—— dusting quantity, kg/t•y;

V50——wind velocity at 50 m from the ground ,m/s;

V0——wind velocity for dusting, m/s;

W——moisture content of dust particle, %.

V0 depends on the particle size and moisture content. By analogy, the impacted scope of the flying dust during the construction as follows (at the wind velocity of 2.4m/s).

Table 93: TSP Monitoring Results Downwind of the construction site

Unit：mg/m3

Distance 20m 50m 100m 150m 200m 250m

Concentration 1.503 0.922 0.602 0.591 0.512 0.406

It is shown that the TSP concentration 50m downwind of the construction site is lower than the controlled concentration limit (1.0mg/m3) for fugitive emission regulated by the Comprehensive Emission Standard of Air Pollutants (GB16297-1996). The dust intensity at the construction site is related with many factors




including site conditions, construction method, construction equipments, construction season, meteorological conditions and soil characteristics of the construction sites.

The BIEIP covers a wide area, and most of the project sites are distributed linearly with numerous residential areas around, which are susceptible to the impacts of flying dust, as detailed in the table below. However, the impact is temporary and will diminish with the project completion.




Table 94: Sub-project Area Impact by Flying Dust

Sub-project No.

Name of Sub-project Impacted Area

1 Tianhe flood control project No.206 State Highway

2Longzi Lake flood control and

environment improvement projectXingfu Village, 70m east of the PS project site

3

Urban (south of Huai River)

environmental infrastructure

improvement Project

Residential area around the project site

4Xijiagou & Baligou environment

improvement project

PLA Automobile Management Institute, Bengbu

Navy Official School, Yinghe Bridge Primary

School, Zhengying Village

5

Huaishang District flood control and

urban environmental infrastructure

improvement project

Residential area around the project site

6Guzhen County integrated

environment improvement project

Both sides of the project side with dense

population

7Huaiyuan County integrated

environment improvement projectResidential area around the project site

8Wuhe County Mohekou integrated

environment improvement projectSanpu Village, Anzikou, Yuanji Village

6.3.1.2 Odor

The BIEIP involves many desilting projects for canals and ponds. The odor given off during the desilting and the sediment transportation will impact on the surrounding environment.

The odor impacts by this project are analyzed by analogy method on the basis of the Japanese odor intensity six-level rating method, as presented in the Table 95 below. The level 2.5 is regarded as the limit, beyond which it is considered that there is odor pollution and mitigation measures should be taken.

Table 95: Rating of Six-level Odor Intensity (by Japanese Environmental Hygiene Department)

Odor intensity Description of sensation intensityOdor

intensity

Description of sensation

intensity

0 Odorless 3 Obvious odor

1 Slight odor ( sensitivity threshold) 4 Odor




2Able to distinguish the type of odor

( cognitive threshold)5 Strong odor

Two cases have been used for analogy here, Mudanjiang Nanpaozi Desilting Project (Dry excavation in summer) and Nanning South Lake Rehabilitation Project (Wet desilting). For the Mudanjiang case, the rating of odor intensity is shown in the table below. However, for the Nanning case, the odor only could be smelt at the lakeside, and it is basically odorless beyond 50m.

Table 96: Odor Intensity by Desilting (dry excavation in the dry pond) for the Nanpaozi of Mudanjiang

Distance from the Shore Rating

Lakeside 3

30m 2

80m 1

Beyond 100m 0

Therefore, it is concluded that in the desilting projects of the BIEIP, there will be evident odor at the sides of the desilted ditches; the area beyond 30m is rated as Level 2, lower than the odor intensity limit; for the area beyond 50m, it is almost odorless.

In this project some desilting sites are close to the residential areas, such as the pond desilting in the Niushixiang of Guzhen County, Sanpudagou Great Ditch in Mohekou of Wuhe County and the Mochongyin River. And some residential areas are within 30m from the ditches and ponds to be desilted. Some residents even live beside the ditches and ponds, and will be evitably impacted. However, this kind of impact is temporary and will diminish with the project completion.

6.3.1.3 Exhaust Gas and Smoke & Dust Pollution

In the construction of dykes and flood-top roads, there will be large numbers of transportation vehicles and construction machinery joining in the construction, which will generate exhaust gas including HC, CO and NOx. And in the road projects, the melting and paving of asphalt will produce the hazardous gases such as THC and Bap. However the asphalt is proposed to be mixed in the professional agitation plant to reduce the hazardous gas generation during the asphalt melting. The generation of smoke and dust during the asphalt paving is very little. And the emission of the waste gases like NO2 and CO from the construction machinery is little without major impacts on the surrounding environment.




6.3.2 Noise Impacts

The construction noise mainly comes from the construction machinery and the transportation vehicles, whose level depends on the construction phase, the specific sites and the different types of operations, as detailed below.




Table 97: Sound Levels of Major Construction Machinery

Construction Activities Major Noise SourceSound

Level

Earthwork Excavators, bull-dozers, loaders and submerged pumps 85～108

Foundation Treatment Pilers, drillers and caterpillar tractors 96～109

Concrete Works Cable hoists, concrete mixers, cranes, concrete delivery

pumps and concrete poker vibrators 95～110

Bridge & Road ProjectsBull-dozers, road rollers, cable hoists and concrete

spreaders 85～100

Note: In the above table, the piling of the road & bridge projects is included in the foundation treatment.

As analyzed above, a lot of mechanical equipments will become the major noise source during the construction with the single-unit noise level between 85-110 dB(A). For open construction, the formular below could be used to calculate the noise attenuation with the distance increase:

In which

L1 and L2 – Noise level, dB(A) respectively r1 and r2 away from the source;

r1 and r2 – Distance from the noise sources, m.

In the calculation, r1 is taken as 1m

And the calculation results are shown in the following Table 98.

Table 98: Calculation of noise attenuation of major noise-making machinery in the construction period

Unit: dB(A)

Type of job

Max.

Sound

Level

Distance from the Construction Machinery (m)

1 10 20 40 80 100 150 200 300 400

Earthwork 108 100 80 74 68 62 60 56 54 50 48

Foundation

Treatment109 101 81 75 69 63 61 57 55 51 49




Concrete

Works110 102 82 76 70 64 62 58 56 52 50

Bridge & Road

Projects100 92 72 66 60 56 54 50 48 44 42

The standard of “Noise Limits for the Boundary of Construction Sites” (GB12523-90) is applied to the project construction sites. Compared with the Standard, without any mitigation measure, the noise pollution beyond 40 m beyond the diurnal construction machinery reached the Standard on the precondition of not taking any shock reduction and sound insulation measures and the noise pollution at 200 ～ 300 m beyond the nocturnal construction machinery also met the Standard.

Assuming that the noise level 1m away from the boundary of the construction sites could comply with the standard requirements, and the construction machineries are 20m away from the site boundary, the noise impacts are predicted, as shown in Table 99.

Table 99: Noise Attenuation of Major Noise-making Machinery during Construction

Unit: dB (A)

Construction

Phase

Construction

ActivitiesTime

Distance from the Boundary of Construction Site (m)

1 10 20 40 80 100 150 200 300 350

Earth Works EarthworkDaytime 75 72 69 66 61 60 57 55 51 50

Night 55 52 49 46 41 40 37 35 31 30

PilingFoundation

Treatment

Daytime 85 82 79 76 71 70 67 65 61 60

NightProhi

bited— — — — — — — — —

Structural

works

Concrete

works, road

and bridge

projects

Daytime 70 67 64 61 56 55 52 50 46 45

Night 55 52 49 46 41 40 37 35 31 30

The Class II standard of the “Environmental Noise Standard for the Urban Area” (GB3096-93) is applied to the acoustic environmental quality around the construction sites, namely, 60 dB(A) for daytime and 50 dB(A) for night. It is shown in the above table that the major environmental impact by the construction noise mainly comes from the piling phase. If the noise level at the




boundary of the construction sites is compliant with the standard requirement, for the daytime, the noise level 350m away from the boundary could meet the standard requirement for the piling phase, and 80～ 100m away from the site boundary for other construction phases. The residents within 100m from the construction sites will be influenced by the construction noise and the residents within 350m from the construction sites will be affected by the construction noise during the piling phase.

Since the proposed pipe network is to be laid in the urban area, there are numerous environmentally sensitive points around. The construction will result in the noise impacts on the surrounding urban area and the residents’ life. However, normally the network will be laid section by section, and the working period for the laying of each section is relatively short. Therefore, the noise impacts could be minimized if various environmental protection measures are strictly taken. On the other hand, since the proposed embankment (including dyke-top roads), desilting projects and culvert stations are not located in the densely—populated area, the noise impacts will be relatively minor. And the noise impacts will diminish with the construction completion.

6.3.3 Impacts on Water Environment

The wasterwater during construction mainly originates from construction activities and the domestic wastewater produced by the construction workers.

- Wastewater from construction activities

The major pollutant in such kind of wasterwater is SS, and it is mainly generated from:

A. Seepage of groundwater from the foundation pit in the river desilting projects;

B. Large amount of mud and sand flowing into the water bodies during the excavation and filling of roadbed and hole-drilling pouring due to the improper management, which results in the increase of SS and turbidity for the downstream section;

C. The pollutants in the desilted sludge stacked along the riverside seep together with the runoff into the neighboring water bodies with the effects of rainfall and surface scouring;

D. During the construction of the coffer dam, the river bed will be disturbed, making some sediment suspended again; when the coffer dam is removed, the residual slurry left in the dam will be discharged into the river leading to the short-time increase of SS content in the water body.

E. The wastewater generated during the concrete.




- Domestic wastewater

The domestic wastewater discharged from the construction site is expected to be relatively low, and the major pollutants are BOD5, COD, TP, NH3-N and SS from the nightsoil and washing water.

By analogy, the wastewater quality will be COD 300mg/l, BOD5 150mg/l and SS 150 mg/l. To ensure the treatment effects of the domestic wastewater, the nightsoil should be pretreated with septic tanks, and the pretreated domestic wastewater will be sent to a small set of equipments for treatment. For the area along the Huai River, the wastewater should comply with the Class I requirements of the “Integrated Wastewater Discharge Standard” before it can be discharged into the downstream river section. For the area along the tributaries of the Huai River, the wastewater should comply with the Class II requirements of the “Integrated Wastewater Discharge Standard” before it can be discharged into the downstream river sections.




6.3.4 Impacts of Solid Waste

The solid waste generated during construction mainly includes the dirt and crushed stone excavated in the earth works, stone and ash from construction, and the sludge from the river and canal desilting. In addition, the residence of construction workers will also generate some domestic garbage.

6.3.4.1 Sediment of Ditches & Canals

The high moisture content in the desilted sediment stacked along the banks will generate leachate. In particular, the muddy water may be flushed into the rivers in a rainy day, thereby impacting the water quality of the water bodies.

The Bengbu Environmental Monitoring Station monitored the indicators such as heavy metals in the river sediment, and the results show all the sampled sediment is compliant with the Class III requirements of the national Soil Environmental Quality Standard and the “Pollutant Control Standard for the Sludge for Agricultural Use” (GB4284-84). It indicates that the desilted sediment could meet the requirements for agriculture & forestry production and the normal growth of plants without any harm or pollution on the plants and the environment. Therefore the desilted silt could be disposed by on-site stacking, application on farmland and woodland, and filling for roadside greening to realize the earthwork balance, decrease the stacking and transportation of sludge and consequently alleviate the adverse environmental impacts of desilted sludge.

For the pond desilting, the sediment mainly comes from the sedimentation of suspended solid in the large amount of wastewater (mainly domestic wastewater). Therefore it is suggested the sediment should not be used as the agricultural soil for the crops directly for human beings, but should be disposed in the sanitary landfill site as far as possible.

6.3.4.2 Construction Waste

The construction garbage form the project is ordinary solid waste without any toxic and hazardous ingredients. Normally the disposal of abandoned earthwork will not cause adverse environmental impacts.

6.3.4.3 Domestic Garbage

If the domestic garbage generated during construction by the construction workers is not properly disposed, mosquitoes will dramatically increase with stenchy smell given out and the diseases prevalence.




6.3.5 Ecological Impacts

6.3.5.1 Impacts on Vegetation

During the project construction, the original local landforms and vegetation will be disturbed by the excavation of ground surface, and some farmland will be occupied. The ecological impacts during construction on vegetation are mainly the short-term impacts on the crops and the riverside marsh plants. With the project completion, the original production function of the land can be resumed by secondary ploughing and the impacts will be diminished.

The construction and transportation for the project will lead to the ground exposure and the generation of large amount of flying dust in dry season, which will affect the photosynthesis and growth of nearby crops and trees and consequently reduce the crop yield. In the raining season the scouring of loose soil into the farmland around the construction sites will also have adverse effects on the crop growth.

6.3.5.2 Impacts on Aquatic Life

The river desilting will reduce the quantity of bottom lives in the sediment. However, due to the deterioration of overall water quality in Bengbu, the existing quality of inhabitated environment for the bottom lives is poor, which will be significantly improved with the project completion. And the inhabitated environment for the bottom lives will also be restored gradually. Generally the impacts will be more positive.

6.3.5.3 Impacts on Land Use

The land occupied by the project construction includes the farmland, urban construction land and bottom land. And the temporary land occupation will also destroyed the existing surface vegetation.

6.3.5.4 Impacts of Soil Erosion

The construction activities will destruct the surface vegetation and its soil & water conservation. At the same time, the dumping of large quantities of spoiled soil and residue on the construction sites is easy to result in the soil erosion once it rains, especially the desilted sediment.

6.4 Environmental Impacts during Operation




6.4.1 Impacts on Water Environment

The impacts on the water environment by the proposed BIEIP are mainly analyzed from three aspects: 1) the environmental benefits and the impacts on the total pollutant discharge realized by the completion of the urban sewage system together with the construction and operation of the WWTPs proposed in the drainage master plan; 2) the impacts on the total pollution discharge into the Huai River and the reduction of total pollutants from Mohekou Industrial Park by the construction of Mohekou WWTP; and 3) the environmental impacts on the water quality of Longzi Lake by the discharge of residual wastewater from the dump sites for the Longzi Lake desilted sediment.

6.4.1.1 Impact on Water Environment by Urban Drainage Project

- Analysis of urban sewage discharge

Based on the statistics for the sewage discharge of the urban sewage discharge outfalls in 2005 and 2006, the percentages of wastewater discharge for all the outfalls are analyzed as follows.

Table 100: Statistics of Sewage Discharge from the Urban Sewage Discharge Outfalls

Name of

Sewage

Outfall

2005 2006

Sewage

Discharge

10000m3/y

Percentage in the

Total Sewage

Discharge of the

City

Sewage

Discharge

10000m3/y

Percentage in the

Total Sewage

Discharge of the

City

Baligou 1228 11.5% 1649 18.3%

Xijiagou 5080 47.0% 4316 47.8%

No.3 Dock 672 6.2% 336 3.7%

No.1 Dock 669 6.2% 325 3.6%

Jiaotong

Road1185 11.2% 870 9.7%

Longzi Lake 1840 17.0% 1510 16.7%

Baojiagou 100 0.9% 21 0.2%

Total 10744 100% 9027 100%




From the above data, we can see that, among the seven major urban pollution discharge outlets, the pollution discharge volume of Xijiagou is the largest, which accounted for more than 47% of the urban total discharge amount, and followed by Baligou, the Longzi Lake, Jiaotong Road, No.3 Dock, No.1 Dock and Baljiagou. We can also see that, the sewage of Bengbu City can be divided by the Xijiagou, the sewage amount of the west area of Xijiagou is larger, which accounted for more than 60% of the total amount, nearly 154,000m3/d; while the sewage of the east area of Xijiagou is less than 40% of the total, amounting to 104,000 m3 /d. The total amount of sewage collected by the urban sewage outfalls is about 258,000m3/d.

Statistical analysis chart of pollution discharge volume of Bengbu City

pollution discharge outlets

11%

48%6%6%

11%

17% 1%BaligouXijiagouNo.3 DockNo.1 DockJiaotong RoadLongzi RiverBaojiagou

Figure 19: Statistic Analysis of Sewage Discharge from Bengbu Urban Outfalls

According to the 2005 statistic data, in Bengbu city, the sewage treatment capacity is 25.55 million m3, the industrial wastewater treatment capacity is 16.89 million tons and the total amount of sewage collection and treatment is 42.44 million tons/year. The concentrated sewage treatment rate is about 30%, so the total sewage amount of Bengbu City in 2005 is about 141.47 million tons / year, the ratio of the living wastewater to the industrial wastewater is 3:2.Seen from the current distribution of Bengbu City drainage system, the sewage entering the 7 pollution discharge outlets is basically collected by the pipe network. Only the east side of Baligou, east bank of the Longzi Lake and Baojiagou area haven’t formed the pipe network, so the sewage access network rate of the pollution discharge outlets of Baligou and the Longzi Lake takes by 50%, and exclude the sewage of Baojiahou. Accordingly, estimate the actual collection rate of Bengbu City sewage pipe network. Table 101 is the estimated results of sewage collection rate.

Table 101: Estimated Collection Rate of Bengbu Municipal Sewage Network




Pollution Discharge Outfall BaligouXijiago

u

No.3

Dock

No.1

Dock

Jiaotong

Road

Longzi

Lake

Sewage Connection Rate 50% 100% 100% 100% 100% 50%

Actual Connected Sewage

Quantity 10000m3/d614 5080 672 669 1185 1840

Total Connected Sewage

Quantity 10000m3/d10060

Total Municipal Sewage in

200514147

Current Sewage Collection

Rate70%

From the estimated data in the table: the current sewage collection rate of Bengbu City is about 70%, the sewage treatment rate is around 30%, which is close to the average treatment rate 33% of the wastewater in the Huai River. It is far below the requirement in the plan of reaching 70% of the concentrated sewage treatment rate till 2010.So it is very important to perfect the construction of sewage closure pipe network and speed up the construction of sewage treatment works.

- Water quality analysis of urban sewage

According to 2005 statistics data of the total amount of pollutants with chemical oxygen demand and NH3-N index, nearly 100,000 tons of the sewage achieved GB18918-2002 Class I A standard (CODcr 50mg/L, NH3-N 5mg/L) after the treatment of Xijiagou sewage treatment plant, and then discharged into the Huai River, estimate the water quality of the remaining untreated sewage as the current average concentration of Bengbu City untreated sewage. Figure 20, Figure 21 and Figure 22 are the statistical analysis charts of sewage and pollutants discharge of 7 pollution discharge outlets.

Table 102: Statistical Analysis of Water Quality at the Outfalls of Bengbu Urban Area in 2005

No.Name of Pollution Discharge

Outfall

Wastewater Quantity

10000m3/y

CODcr

mg/LNH3-N mg/L

1 Baligou 1228 255 29.0

2 Xijiahou 5080 132 29.9




No.Name of Pollution Discharge

Outfall

Wastewater Quantity

10000m3/y

CODcr

mg/LNH3-N mg/L

3 No.3 Dock 672 184 44.9

4 No.1 Dock 669 244 34.8

5 Jiaotong Road 1185 256 42.8

6 Longzi Lake 1840 225 41.8

7 Baojiagou 100 236 28.7

Weighted Mean 10774 187 34.5

Estimation of Total Pollution Discharge in

200510774 15147 2640

Statistical Value of total Pollution

Discharge in 200510774 20115 3713

Deviation ratio

(Statistical value/Estimated value)1.35 1.41

Note: *Estimated value: 100,000 tons/day of the sewage in the total sewage of 2005 is treated effectively and achieved Class I A standard, estimate the COD, NH3-N emissions of the remaining sewage by the weighted average of the seven pollution discharge outlets.

2005 CODcr年蚌埠市区排污口排放量统计分析表

16%

33%6%8%

15%

21% 1%八里沟席家沟三号码头一号码头交通路龙子河鲍家沟

Figure 20: Statistical analysis chart of CODcr emissions of Bengbu City



Statistical Analysis of CODcr Discharge of Bengbu Urban Pollution Discharge Outfalls in 2005

BaligouXijiagouNo.3 DockNo.1 DockJiaotong

RoadLongzi

RiverBaojiagou


2005年蚌埠市区排污口氨氮排放量统计分析表

10%

40%8%6%

14%

21% 1%八里沟席家沟三号码头一号码头交通路龙子河鲍家沟

Figure 21: Statistical analysis chart of NH3-N emissions of Bengbu City pollution discharge outlets in 2005

From Table 102, we can see that, if estimate the pollution discharge volume by the weighted average of the urban seven pollution discharge outlets, the value is markedly lower than the actual emissions of the pollutants, so we need to make some adjustments of the weighted average value to make it close to the actual discharge concentration of the sewage. Meanwhile, this environmental evaluation uses reverse deduction method to estimate the water quality of the untreated sewage, the specific methods are: based on the sewage discharge volume, emissions of the pollutants of seven major pollution discharge outlets of Bengbu City in 2005, there is 100,000 tons of sewage can achieve Class I A standard after the treatment of sewage treatment plant, estimate the emissions of the pollutants of these discharge sewage which already achieved the standard. Take the remaining emissions of pollutants as the untreated sewage emissions, then reverse deduct the water quality of the untreated sewage water. Estimated results are shown in Table 103.

Table 103: Reverse deduction estimate table of water quality of untreated sewage water of Bengbu City in 2005

Project

Wastewater

Discharge

Volume

10000 t/a

COD NH3-N

Concentration

mg/L

Discharge

amount

Concentration

mg/L

Discharge

amount



Statistical analysis chart of ammonia nitrogen emissions of Bengbu City pollution discharge outlets in 2005

BaligouXijiagouNo.3 DockNo.1 DockJiaotong

RoadLongzi

RiverBaojiagou


Statistical

value of total

amount

10774 2.0115 0.3713

Treated

Sewage Up

to Standard

3650 50 0.1825 5 0.01825

Untreated

Sewage7124 257 1.829 50 0.35305

From the data in the table, we can see that, if want to match the actual emissions of pollutants, the water quality of the untreated sewage water shall be CODcr of 257mg / L and NH3-N of 50 mg/L. Analysis of the estimated data in table 5 and table 6 and take into the full consideration of the fluctuation scope of the water quality of seven pollution discharge outlets, this environmental evaluation final confirms: Among the sewage discharged from the seven pollution discharge outlets of Bengbu City, the water quality of the untreated sewage water is CODcr of 250mg/L and NH3-N of 45gm/L.

In the following analysis of the total pollutants and the prediction of water-environmental impact, we will use such value as the average water quality of the untreated sewage.

- Total amount control analysis of urban sewage

According to the development planning and drainage plan of Bengbu City, till 2010, Bengbu City's sewage collection system will form the basic network and the total amount of the sewage will be 494,100 m3/d.After the completion of urban drainage projects, if without the newly construction of sewage treatment plants for matching, with the increase of the sewage amount and the concentrated pollution discharge outlets, it may Pb to the pollution discharged into the Huai River much higher than the total amount of discharge sewage in 2005 and cause the adverse impact to the Huai River. The environmental evaluation will analyze the changes of the total amount of Bengbu City’s discharge sewage according to the different levels of sewage treatment. And the prediction evaluation of the water-environmental impact of Bengbu section of the Huai River.

The total amount control analysis will estimate the recent planning sewage amount in 2010 by the different sewage treatment capacity.

(1) Based on the current sewage treatment capacity, that is only maintain the treatment capacity of 100,000 tons/day of Xijiagou sewage treatment plant, and the water quality of untreated sewage takes the average value of current water




quality, then estimate the total amount of the pollutants discharged into the Huai River.

(2) Suppose there will be Xijiagou sewage treatment plant only to treat the sewage at full capacity in 2010, with the treatment capacity up to 200,000 tons /day of the design scale, then estimate the total amount of the pollutants discharged into the Huai River.

(3) Suppose Xijiagou sewage treatment plant, the Yangtaizi sewage treatment plant and the Hebei sewage treatment plant all completed and put into operation according to plan, then estimate the total emissions of the pollutants.

The yearly different sewage treatment capacity and the estimated results of total emissions of the pollutants of Bengbu City planning are shown in Table 104, Figure 22, Figure 23 and Figure 24.

Table 104: Estimated table of yearly total emissions of the pollutants of

Bengbu City Planning

Evaluatio

n period

Total

emissions of

the pollutants

10000 t/a

Treated

sewage

volume

10000 t/a

Untreated

volume

10000 t/a

Change of total amount Change of total amount

COD Increase or

decrease %

NH3-N Increase or

decrease %

Current

state of

2005

29.5 10 19.5 20115 3713

2010 A 49.4 10 39.4 37778 +87.8% 6654 +79.2%

B 49.4 20 29.4 30478 +51.5% 5194 +39.9%

C 49.4 32.5 16.9 21353 +6.2% 3369 -9.3%




01020304050

1000

0t/d

（）

Compari son chart of sewage di scharge amounti n pl anni ng year of Bengbu urban area

Currentcondi t i on of2005A of 2010

B of 2010

C of 2010

Figure 22: Statistical Chart of Sewage Discharge Amount in 2010

08000

16000240003200040000

t/a

（）

Compari son chart of total di scharge amount of CODcri n pl anni ng year of Bengbu Ci ty


B of 2010

C of 2010

Figure 23: Statistical Chart of Total Discharge Amount of CODcr in 2010

0

1500

3000

4500

6000

7500

t/a

（）

Compari son chart of total di scharge amount of ammoni a ni trogen i npl anni ng year of Bengbu Ci ty


B of 2010

C of 2010




Figure 24: Statistical Chart of Total Discharge Amount of NH3-N in 2010

From the date in Table 104 and Figure 22, Figure 23 and Figure 24, we can see that, till 2010, as the population continues to increase and the sustained economic development, as well as the gradually improvement of sewage closure pipe network, the sewage of Bengbu City will increase greatly, which will increase by 67.5% compared with the current situation of 2005.The implementation of urban drainage projects makes the most sewage discharge into the Huai River through the pipes, if without the construction of the matching sewage treatment works, the total amount of pollution discharge will also increase substantially. Till 2010, if still maintain the existing sewage treatment capacity, that is 100,000 tons/day treatment capacity of Xijiagou sewage treatment plant, the total amount of COD emissions will increase by 87.8% compared with that in 2005, while the NH3-N will increase by 79.2%; if the design treatment capacity of 200,000 tons/day of Xijiagou is under the normal operation, the total amount of COD emissions will increase by 51.5% compared with that in 2005, while the NH3-N will increase by 39.9%;If the supplementary construction of Yangtaizi sewage treatment plant Phase I and Huaishang Hebei sewage treatment plant Phase I can put into use as the planning, the total amount of COD emissions will increase by 6.2% compared with that in 2005, which is close to the current situation of 2005 basically. And the emissions of NH3-N will decrease by 9.3% compared with that in 2005.It is evident that the construction projects of urban drainage system must be interconnected with the sewage treatment projects, so as to play the role in control the pollution and have the real environmental benefits.

6.4.1.2 Prediction of water-environmental impact of the Huai River

- Current situation of pollution discharge of the Huai River

According to the monitoring data in 2006, the flow and the water quality of urban seven pollution discharge outlets and three monitoring sections are shown in Table 105.

Table 105: Statistical table of date of pollution discharge outlet and monitoring section of Bengbu City

No. Name of sectionDistance

kmMonitoring value

Flow

m3/sNH3-N mg/L CODcr mg/L

S1Section of Bengbu

Gate0

Scope of the

Monitoring value

85.2～2940

2.6～4.3 9.2～16.2





kmMonitoring value

Flow


Average value187.68

(dry)3.3 (dry) 16.2 (dry)

W1Baligou pollution

discharge outlet3.6/3.6

Scope of the

Monitoring value

0.2-～1.46

17.4～38.4 120～469

Average value 0.52 25.8 317

W2Xijiagou pollution


Scope of the

Monitoring value

0.3～1.86

1.70～18.8 34～224


W3No.3 Dock pollution

discharge outlet8.4/2

Scope of the

Monitoring value

0.04～0.17

26.6～70.9 117～339


W4No.1 Dock pollution

discharge outlet9.4/1

Scope of the

Monitoring value

0.09～0.13

24.1～58.2 120～464


W5

Jiaotong Road

pollution discharge

outlet

12/2.6

Scope of the

Monitoring value

0.18～0.40

23.0～61.1 117～494


W6Longzi pollution


Scope of the

Monitoring value

0.29～0.65

20.6～56.4 123～214


S2New railway bridge

section17/1.5

Scope of the

Monitoring value0.08～2.96 11.7～21.0

Average value 1.05 16.0

W7Baojiagou pollution


Scope of the

Monitoring value1.21～49.6 25～717


S3 Mohekou section 30.5/4 Scope of the

Monitoring value

0.21～2.48 10.7～21.5





kmMonitoring value

Flow


Average value 1.05 14.5

W8

Pollution discharge

outlet of Mohekou

Park

32/1.5

Scope of the

Monitoring value

Average value 0.355

(entering30)

50

(entering450

)

According to the drainage planning of Bengbu City, after the completion of this project, the recent sewage closure projects of Bengbu City in 2010 will be basically completed then, the sewage will be concentrated treated by Xijiagou sewage treatment plant, Yangtaizi sewage treatment plant and Hebei sewage treatment plant. The situation of sewage treatment system of Bengbu City in 2010 is shown in Table 106.

Table 106: Statistical table of drainage of Bengbu City’s sewage treatment plants 10000 m3/d

Name of sewage

treatment plantXijiahou Yangtaizi Hebei (Huaibei) Mohekou Park Total

Current state of 2005 10 — — — 14

Planning of 2010 20 10 2.5 3 35.5

Location of pollution

discharge outlet

(below the Bengbu Gate)

6.4km 16km 6km 32

Outlet water qualityImplementation of GB18918-2002 Class I A standard: CODcr 50mg/L

NH3-N 5mg/L

This environmental evaluation conducts the impact analysis of the water quality of Bengbu section of the Huai River (Section of Bengbu Gate-------Mohekou Section) and the prediction indexes are CODcr and NH3-N.

① Simulation of the pollution discharge section of the Huai River

According to the technical guidelines of environmental evaluation, the annual average flow of Bengbu section of the Huai River is more than 150 m3/s, which is the large river and can be simplified as the rectangular straight river.




② Simplify the pollution sources. Based on the evaluation level and the actual situation of Bengbu section of the Huai River, simplify the pollution sources as the consecutive constant emission point sources. The main sources of this system are: Xijiagou sewage treatment plant, Yangtaizi sewage treatment plant, Hebei sewage treatment plant and the sewage treatment plan of Mohekou Park, the upstream inflow of Bengbu Gate is also considered to be one influent pollution source of this system.

- Choice of mathematical model

This evaluation uses meandering river steady-state mixed cumulative flow model, predict and evaluate the impact degree and scope of the project’s sewage to the water body of downstream.

Non-persistent pollutants：

q=huy

Mq=h2uMy

Of which：x—The distance between the prediction point and the discharge point, m;

y--Horizontal distance between the prediction point and the discharge point, m;

K1--Degradation coefficient of the pollutants in the river, 1/d;

c--Concentration of the pollutants at the prediction point(x,y), mg/l;

a—The distance between the sewage discharge outlet and the riverbank0≤a≤B), m.

cp--Concentration of the pollutants in the sewage, mg/l;

Qp—Sewage flow, m3/s;

ch—Concentration of the pollutants in the river upstream (background concentration), mg/l;

h--Average depth of the river, m;

My—Horizontal mixed (diffusion) coefficient of the river, m2/s;

u—Flow speed of the river, m/s;

Qh—Flow rate of the river, m3/s;

According to the provisions of NJ/T2.3-93,the horizontal mixed coefficient My is calculated by Taylor method:




Of which: h--Average water depth, m;

g-- Acceleration of gravity,m/s2;

I—Hydraulic gradient, m/m;

B—River width, m.

The estimated value of parameter K1 is determined by two-point method:

Of which: ΔX—Section distance of up-down stream, m;

C1, C2—Concentration of the pollutants of the up-down stream water body, mg/L;


Evaluation scope, period and contents of the projection

The evaluation scope of surface water-environmental impact is the Bengbu section of the Huai River, and within the downstream 1500 of pollution discharge outlet of sewage treatment plant in Mohekou Fine Chemical Industrial Park (Sanpu River drainage pump station) with the distance of 32km.

The contents of prediction include:

① Simulation of the current water quality to determine the parameters of water quality;

② Predict the water quality under the normal operation after the completion of the sewage treatment plants and evaluate the conditions of the water quality;

③ Predict the water quality of the accidental discharge of the sewage treatment plants and risk analysis the degree of the effects.

- Parameter determination of the Huai River water system simulation

Because the flow of the Huai River changes greatly in the different years and seasons and affected by various upstream lock gates and other gates substantially. The environmental evaluation is intend to use the average flow 187.68m3/s of the Huai River during the drought period in the recent ten years, suppose there is no other influents, just has different pollution discharge outlets, then predict the impact of pollution discharge to the water environment of the Huai River.




Based on the monitoring data of the routine monitoring sections of Bengbu in 2005, according to the current pollution discharge volume and the concentrations of pollutants of the seven pollution discharge outlets, as well as the locations of pollution discharge outlets, we can calculate the attenuation coefficient KCOD=0.12d-1, KNH3-N=0.08d-1 by using formula (1), formula (2) and the parameters.

- Prediction of water quality of Bengbu section of the Huai River

① Prediction of the water quality of the sewage treatment plants under the normal operation

Till 2010, the total amount of Bengbu City’s sewage is about 494,000 m3/d, the total sewage treatment capacity of three urban sewage treatment plants and one Park’s sewage treatment plant is about 355,000m3/d, that is the urban sewage treatment rate shall reach 72% after the completion of the sewage treatment plants, which is in line with the requirements of 70% sewage collection treatment rate of the 2010 drainage planning. Summary of the inlet and outlet water quality of the four sewage treatment plants is shown in Table 107.

Table 107: Summary statement of inlet and outlet water quality of the sewage treatment plants

Name of

sewage

treatment

plant

Inlet water quality

Outlet water

quality

Class I A standard

Water quality of

accidental

discharge

(By 30% of the

treatment rate)

Water quality of

untreated Sewage

(Sewage system of

the south of the

City)

CODc

r

NH3-NCODc

r

NH3-NCO

DNH3-N

CO

DNH3-N

Xijiahou 350 40 50 5 245 28 250 45

Yangtaizi 320 35 50 5 224 24.5 250 45

Hebei 400 35 50 5 280 24.5 250 45

Mohekou

Park450 30 50 5 315 21.0 250 45

After the completion of the sewage treatment plants, the outlet water quality under the normal operation is in line with the GB18918-2002 Class I A standard, the remaining untreated sewage will be mainly from the sewage system of the south of the City in the future planning, which will be discharged. See details in Table 108.




Table 108: List of prediction contents of water environment of Bengbu section of the Huai River in 2010

Proposal Conditions of prediction Pollution discharge outlet

A

Suppose the four sewage treatment plants all

discharge up to standard

The remaining sewage will be discharged into the

Huai River through Xijiagou

Four pollution discharge

outlets (Xijiagou, the Longzi

Lake, Small Bengbu Station,

the Sanpu River drainage

station)

B

Suppose the three urban sewage treatment plants

all discharge up to standard

Accidental discharge of Mohekou Park

C All the sewage treatment plants discharge with the

failure to meet the standard

D

Completion of sewage treatment plant in the south

of the City (155,000 t/d)

Discharge all the sewage up to the standard

Specific conditions of the prediction for each proposal and the parameters selection are shown in Table 109.

Prediction parameters selection: The flow of upstream inflow of Bengbu Gate uses the average flow of 187.68 m3/s during the drought period of many years, the average flow speed is 0.11m/s; The background concentration of the pollutants uses the on-line monitoring average concentration CODcr for 16.2mg/L and NH3-N for 3.3mg/L during the drought period of Bengbu Gate section of the Huai River.




Table 109: Summary statement of conditions of prediction and parameters

Proposa

l

Name of

pollution

discharge outlet

Name of

sewage

treatment plant

Location of

pollution

discharge outlet

(From section of

Bengbu Gate)

Water

amount

10000

m3/d

Water quality mg/L

CO

DNH3-N

Proposa

l A

Xijiahou

Xijiahou

6km

20 50 5

Untreated

Sewage outlet13.9 250 45

Small Bengbu

Station

Huaishang

Hebei6km 2.5 50 5

Longzi Lake Yangtaizi 15.5 10 50 5

Sanpu River

pump stationMohekou Park 32 3 50 5

Proposa

l B

Xijiahou

Xijiahou

6km

20 50 5

Untreated


Small Bengbu

Station

Huaishang

Hebei6km 2.5 50 5


Sanpu River


Proposa

l C

Xijiahou

Xijiahou

6km

20 245 28

Untreated


Small Bengbu

Station

Huaishang

Hebei6km 2.5 280 24.5

Longzi Lake Yangtaizi 15.5 10 224 24.5

Sanpu River





Proposa

l

Name of

pollution

discharge outlet

Name of

sewage

treatment plant

Location of

pollution

discharge outlet

(From section of

Water

amount

10000

m3/d

Water quality mg/L

CO

DNH3-N

Proposa

l D

XijiahouXijiahou

6km 33.9 50 5South of city

Small Bengbu

Station

Huaishang

Hebei6km 2.5 50 5


Sanpu River


This environmental evaluation conducts the prediction and analysis of water-environmental impact of Bengbu section of the Huai River according to the above four different drainage proposals, the prediction results are shown in Table 110, Figure 25, Figure 26 and Figure 27.

Table 110: Prediction table of water quality of the sewage treatment plant under the operation period

Prediction section

Proposal A Proposal B Proposal C Proposal D

CODc

r

NH3-N CODcr NH3-N CODcr NH3-N CODcr NH3-N

Section of Bengbu

Gate (Initial

concentration)

CODcr 16.2mg/L, NH3-N 3.3mg/L.

New railway bridge

section28.13 5.15 28.13 5.15 50.13 7.70 21.62 3.78

Mohekou section 21.72 4.38 21.72 4.38 33.60 5.87 16.26 3.17

Downstream 3.5km

of Mohekou section21.57 4.34 26.11 4.61 37.32 6.04 16.35 3.16




The distance of the

resumption to the

section of Bengbu

Gate (COD

16.2mg/L, NH3-N

3.3mg/L)

22km 32km 26km 34km 57km 67km2.4k

m—

GB3838-2002

Class Ⅲ water bodyCODcr 20 mg/L, NH3-N 1.0 mg/L.

From the data in Table 110 and Figure 25, Figure 26, Figure 27 and Figure 28, we can see that, the change trend of the concentration of pollutants in each evaluation section is: The water quality of new railway bridge section is in the rapid decline compared with the section of Bengbu Gate; the water quality of the downstream of Mohekou section is slightly better than in new railway bridge section, but still has some pollution compared with the water quality of the upstream inflow. For the prediction value of Mohekou section, the results of proposal A is clearly better than proposal B, which reflects the water quality of the sewage of Mohekou Park having the greater impact to the water quality of the Huai River.

The main difference between the proposal A and proposal B is that the water quality of downstream 3.5km of Mohekou section (downstream 2km of pollution discharge outlet of Mohekou Park) is close to the water quality of upstream inflow of Bengbu Gate basically. It indicates that once the sewage treatment plant can effectively play its sewage treatment capacity to ensure the tail water of the sewage treatment plant discharge up to the standard, then it will have little environmental impact to the downstream of Bengbu section of the Huai River.

The prediction results of proposal C show that, if the sewage treatment plants can not discharge the tail water up to the standard, the COD and NH3-N of new railway bridge section will over the standard of Class III water body; the prediction results of Mohekou section show that, through the attenuation of nearly 30km of Bengbu section, the NH3-N concentration in the sewage is still over the standard, which indicates the water quality of sewage discharged from Bengbu to the Huai River has the greater impact to Bengbu section of the Huai River and its downstream and it has the great significance for whether the water quality of the downstream of the Huai River can maintain the function of Class III water body.




Figure 25: 2010 Urban Drainage Proposal C, D - Prediction Chart of CODcr Discharge Impact



Bengbu Watergate

Xintie Bridge

Mohekou

Bengbu Watergate

Xintie Bridge

MohekouProposal BLevel of Bengbu Watergate

Proposal ALevel of

Bengbu Watergate


Figure 26: 2010 Urban Drainage Proposal C, D - Prediction Chart of CODcr Discharge Impact



Bengbu Watergate

Xintie Bridge

MohekouProposal CLevel of Bengbu Watergate

Bengbu Watergate Xintie

BridgeMohekou

Proposal DLevel

of Bengbu


Figure 27: 2010 Urban Drainage Proposal A, B - Prediction Chart of NH3-N Discharge Impact



Level of Bengbu

Proposal ABengbu

Watergate

Xintie Bridge

Mohekou

Level of Bengbu

Proposal BBengbu

WatergateXintie Bridge Mohekou


Figure 28: 2010 Urban Drainage Proposal C, D - Prediction Chart of NH3-N Discharge Impact



Proposal CBengbu

WatergateXintie Bridge

MohekouLevel of Bengbu Watergate

MohekouProposal D

Bengbu Watergate Xintie

Bridge


Through the water quality prediction, this environmental evaluation put forward the following suggestions:(1) Bengbu shall actively operate the supporting construction of the sewerage treatment projects and need to accelerate the pace of development; the urban infrastructure construction, especially the construction of the sewage pipe network and sewage treatment plants project shall be coherent with the development of the Bengbu new district. To ensure the Bengbu section of the Huai River maintains the function of Class III water body basically, the new construction and expansion of the sewage treatment plants is imperative. Meanwhile, monitor and predict the serious situation of NH3-N index exceeding the standard of the water quality, as well as the treatment requirement for the NH3-N of 5mg/L in the Class I A standard for the urban sewage treatment plants, we suggest the sewage treatment plants shall take into the enough consideration of the NH3-N removal efficiency when choosing the sewage treatment process. Treatment process must have strong capacity to remove the phosphorus and nitrogen.(2) In order to minimize the pollution load to the downstream Bengbu of the Huai River, we shall in particular, strengthen the monitoring works for the sewage treatment discharge up to the standard of Mohekou Park. Especially the industrial and mining enterprises within the Park must do the pretreatment discharge up to the standard, from one hand, we shall avoid the industrial enterprises in the park to discharge the sewage into the Huai River directly; from the other hand, we shall prevent the pretreatment of the enterprises over the standard, further Pbs to the pollution load of the sewage entering the sewage treatment plant is too large for the normal operation, then a large amount of industrial wastewater will collection discharge with failure to meet the standard, which will cause the serious environmental pollution to the water environment of the Huai River. Thus, the emissions of industrial wastewater with the failure to meet the standard of Mohekou Park become the potential risk for the downstream water environment of the Huai River.

6.4.1.3 Water-environmental impact analysis of Mohekou sewage treatment plant

- Water-environmental impact analysis during the normal operation period

(1) Investigation on Current Situation of Regional Surface Water

For the sewage treatment plant of Mohekou industrial Park and the supplementary pipe network project are still in the planning, the generated sewage of the enterprises within the Park and some living sewage of Mohekou town are discharged into the Huai River through Sanpu big ditch. Sanpu big ditch and the bypass channel of the Mochongyin River are two artificial irrigation




ditches, the gates to the Huai River are basically closed except the flood discharge.

(2) The main contents of the prediction

After the completion of the sewage treatment plant, the enterprises sewage within the Park and the living sewage of the town will not be discharged into Sanpu big ditch directly any more; after the treatment, the sewage will achieve Class 1 A standard, then is discharged into the bypass channel of the Mochongyin River and flows southward to the Huai River.

This evaluation mainly predicts the impact of the water quality of the Huai River after the completion of the projects, forecasts the contribution value of the concentration of the of the pollutants in the river because of the sewage discharge of the sewage treatment plant, as well as the distribution of the concentration of pollutants in the river.

(3) Predictive factor and model

Predictive factor

The predictive factor of water-environmental impact is COD.

Predictive model

This evaluation uses meandering river steady-state mixed cumulative flow model, predict and evaluate the impact degree and scope of the project’s sewage to the water body of downstream.

Non-persistent pollutants:

q=huy

Mq=h2uMy

Of which ： x—The distance between the prediction point and the discharge point, m;

y--Horizontal distance between the prediction point and the discharge point, m;

K1--Degradation coefficient of the pollutants in the river, 1/d;

c--Concentration of the pollutants at the prediction point(x,y), mg/l;

a—The distance between the sewage discharge outlet and the riverbank0≤a≤B),m.

cp--Concentration of the pollutants in the sewage, mg/l;





ch—Concentration of the pollutants in the river upstream (background concentration), mg/l;

h--Average depth of the river, m;

My—Horizontal mixed (diffusion) coefficient of the river, m2/s;


Qh—Flow rate of the river, m3/s;

According to the provisions of NJ/T2.3-93, the horizontal mixed coefficient My is calculated by Taylor method:

Of which: h--Average depth, m;

g-- Acceleration of gravity,m/s2;

I—Hydraulic gradient, m/m;

B—River width, m.

The estimated value of parameter K1 is determined by two-point method:

Of which: ΔX—Section distance of up-and down-stream, m;

C1, C2—Concentration of the pollutants of the up-down stream water body, mg/L;


According to the statistics of Hydrologic Data in the calendar years of Bengbu section of the Huai River, the average flow of the Huai River during the drought period in the recent ten years is 187.68 m3/s, during the gate close period, Bengbu section of the Huai River just has the discharge of 12.5 m3/s under the gate open. Considering the gate close during the drought period of Bengbu Gate of the Huai River, we can get the relationship of the flow speed and the flow:

u=0.01025Q0.8733

Parameter Selection

The specific hydrological parameters are as follows: Uclose=0.009m/s; Qclose=12.5 m3/s; h=3.0m;B=300m; I=2.9*10-5;K=0.16L/d (Select the water capacity of Bengbu City to check the experience value of the research result, and




use two-point method to check the routine monitoring data of the sections of the Huai River); My=0.062m/s; Ch=12.2mg/L (Monitor the maximum COD of the current situation).The treatment scale of the sewage treatment plant is 30,000 m3/d, during the normal discharge of the sewage: Qp=8.33 m3/s;Cp=50mg/L.

Prediction Result

Integrate the prediction parameters into the formula to calculate the COD prediction result of each monitoring section after the completion of the projects. Prediction results are shown in Table 111 .




Table 111: Prediction results of water quality during normal operation period of the sewage treatment plant

Unit: mg/L

C(mg/m3) y

x

30

m60m

90

m

120

m

150

m

18

0m

210

m

240

m

27

0m

300

m

Downstream 50m of pollution discharge outlet22.

14

13.4

9

12.

13

12.

08

12.0

8

12.

08

12.

08

12.0

8

12.

08

12.

08

Downstream 100m of pollution discharge

outlet

21.

71

15.6

2

12.

67

12.

02

11.9

6

11.

95

11.

95

11.9

5

11.

95

11.

95


outlet

19.

67

16.5

9

13.

86

12.

40

11.8

7

11.

73

11.

71

11.7

1

11.

71

11.

71


outlet

16.

23

15.3

0

14.

10

12.

97

12.1

0

11.

54

11.

23

11.0

9

11.

04

11.

02

Downstream 1,000m of pollution discharge

outlet

13.

37

13.0

5

12.

58

12.

04

11.5

0

11.

03

10.

65

10.3

7

10.

18

10.

07


outlet

12.

20

11.9

9

11.

68

11.

30

10.9

0

10.

52

10.

199.92

9.7

2

9.5

7


outlet

10.

10

10.0

0

9.8

5

9.6

69.44

9.2

2

9.0

08.80

8.6

3

8.4

9


outlet

7.9

37.88

7.8

1

7.7

27.62

7.5

0

7.3

87.26

7.1

5

7.0

5

Limit value of COD in ClassⅢ standard of Environmental Quality Standards for Surface Water (GB3838-2002)is 20mg/l.From the prediction results, we can see that: The COD concentration at downstream 200m of pollution discharge outlet can just reach the standard; the COD concentration at downstream 1300m can just achieve the background concentration.

The sewage causes a certain degree of pollution to the water quality of the Huai River within the downstream 1300m of the pollution discharge outlet.

Impact Analysis

After the implementation of the sewage treatment works, the ecological impact is mainly the positive impact, the main negative impact is shown in the impact to the surrounding ecological environment of the pollution discharge outlet, with the smaller impact to the terrestrial ecological environment.




(1) The impact to the surrounding ecological environment of the pollution discharge outlet

The sewage is collection discharge after the closure treatment, there will be considerable non-removal suspended solids and sediments to discharge into the Huai River along with the sewage. The surrounding sediments of the pollution discharge outlet will have some impact to the species and quantity of the benthic organism. Meanwhile, for the collection discharge of the sewage, it will form a certain length of the pollution belt near the downstream of the pollution discharge outlet. The original aquatic habitat will be destroyed in the pollution belt, and the species of the aquatic organism will be decreased, while the number of the tolerance organisms will be increased and the species diversity within the pollution belt will be reduced. However, for the width of the pollution belt will not cover too large area of the river, along with the larger flow of the Huai River, although it will cause some pollution of the local water, there will be no significant impact. Therefore, the collection discharge of the sewage after the closure treatment will have the little impact to the growth of the surrounding fish and aquatic organisms of the pollution discharge outlet.

(2) Eutrophication problem of the water body

Phosphorus, nitrogen and other pollutants in the living sewage are the essential nutrients for the growth of the aquatic plants. When the river flow is quick and the speed is fast, the impact of the nutrient enrichment is little, but when the river flow is slow, the sediment volume of nitrogen, phosphorus and other nutrient salts will increase accordingly, which may cause the eutrophication problem of the water body.

If not take into the consideration of the removal function of the nitrogen, phosphorus and other nutrient salts in this process, or the removal rate is lower, it may result in the eutrophication of local water, such as the surrounding water of the pollution discharge outlet.

(3) Heavy metal

In addition, the influent to the sewage treatment plant contains the industrial sewage, which contains the heavy metals in the sewage, while these pollutants will have a chronic, long-term cumulative impact in some organisms. It will have the enrichment of the heavy metals in the fish, further affect human health with the food chain.

(4) Mitigation Measures

In the sewage treatment process design, we shall consider increasing the removal rate of nitrogen, phosphorus and other nutrient salts. At the same time, strengthen the monitoring and management works of the water quality of the




surrounding water of the pollution discharge outlet and control the changes of the downstream water quality of the pollution discharge outlet timely.

Sewage treatment plants shall comply with the requirements of CJ3082-1999 “Quality Standard of Wastewater Discharged into Urban Sewer Pipe” and GB18918-2002 “Pollutant Discharge Standard of Municipal Wastewater Treatment Plant” strictly, strictly control the industrial sewage, especially for the special sewage containing heavy metals and other harmful substances, to ensure the normal operation of the sewage treatment plants and the discharge of the tail water up to the standard.

- Impact analysis of environmental accidental risk

(1)Environmental risk of non-normal sewage discharge

Based on the analysis of the biological treatment mechanism of the sewage and the practices of the domestic similar sewage treatment plants, the main reasons of untreated sewage overflow of urban sewage treatment plants are as follows:

① Because of the quality problems or improper maintenance of the sewage treatment equipments and facilities, it will cause the malfunction of the equipment and facilities, further Pb to the decline of the sewage treatment efficiency or even the direct discharge of the untreated sewage.

② In case of a power cut of the sewage treatment plant, it will Pb to the direct discharge of the untreated sewage. Both of the above circumstances will have an impact on the water quality of the Huai River.

The possible sudden and non-sudden accidents of the sewage pipe network and sewage treatment system of the sewage treatment works during the normal operation will affect the normal operation of the sewage treatment plants and have a serious impact to the environment. For example: because of the pipeline jam, pipeline rupture and damage of the pipe joints, cause the bulk sewage outflow and the contamination of surface water and groundwater; a large amount of over-standard industrial sewage joins the urban pipe network, thus Pbs to the substantial increase of the influent concentration, then cause the effluent of the sewage treatment plant can not meet the standard; because of the power cut, equipment damage, abnormal operation of the sewage treatment structures, cause a large number of non-efficient treated sewage be discharged into the receiving water body directly, which results in the accidental pollution.

The assumed condition of the risk impact is: the sewage will be discharged into the bypass channel of the Mochong River directly after the Class I treatment, after that, it will be discharged into the Huai River. The COD removal rate of Class I treatment is only 30%, the urban sewage treatment plants collect and treat the distributed sewage, then discharge the sewage into the water body, so




if the sewage treatment plants have the accident, it will change the more points pollution to a single point collection pollution, which will increase the pollution impact to the water body. Prediction results are shown in Table 112 .

Table 112: Prediction results of accidental discharge water quality of the sewage treatment plant

Unit: mg/L

C(mg/m3) y

x30m 60m

90

m

120

m

150

m

180

m

21

0m

240

m

27

0m

300

m

Downstream 100m of pollution discharge outlet102.8

8

77.5

5

36.

57

16.7

6

12.

44

11.9

8

11.

95

11.9

5

11.

95

11.9

5

Downstream 200m of pollution discharge outlet 74.7065.2

1

44.

49

26.1

9

16.

33

12.7

7

11.

88

11.7

3

11.

71

11.7

1

Downstream 500m of pollution discharge outlet 48.4646.0

9

39.

85

31.8

1

24.

18

18.3

2

14.

57

12.5

3

11.

58

11.2

0

Downstream 1,000m of pollution discharge outlet 33.8333.0

6

30.

90

27.7

4

24.

10

20.4

9

17.

30

14.7

5

12.

89

11.6

3


2

20.

97

19.9

6

18.

68

17.2

3

15.

72

14.2

6

12.

92

11.7

5


2

15.

33

14.8

7

14.

26

13.5

5

12.

77

11.9

6

11.

17

10.4

2

From the table, we can see that: The COD of the pollution discharge outlet is over the standard seriously during the accidental risk discharge, the COD at downstream 100m is 5.1 times of the Class III standard, the generated impact of accidental discharge is very huge. Therefore, the design of the sewage treatment plant shall strictly prevent the occurrences of the risk, need to use the dual power supply and standby pump, meanwhile, the operation must strictly follow the procedures and steps to prevent the accidents. In addition, the environmental management departments shall also take some supervision measures for the sewage treatment plant, so as to promote the management of the sewage treatment plant and ensure the normal operation.

6.4.1.4 Water-environmental impact analysis and prediction of the Longzi Lake desilting projects

- Standard analysis of treatment of desilting project engineering wastewater




The pollutants in the desilting project engineering wastewater mainly come from the containing pollutants in the water body of the construction site and the enrichment of N, P and heavy metal pollutants in the sediment particles, as long as we control the concentration of emissions of the suspended solids in the wastewater, we can effectively control the concentration of the emissions of other pollutants.

According to the research results of the experimental simulation of the silt of the Sea of Grass, the Dianchi River: The pollutant content in the wastewater will decrease along with the increase of the silt sedimentation time, rest for 48h, the concentration of the pollutants in the wastewater can basically meet the Class I standard of the sewage integrated emission standard, but the concentration of the suspended solids might not reach the Class I standard. If the rest time is less than 48h, the concentration of the pollutants in the wastewater will over the Class I standard of the sewage integrated emission standard. According to the design of this project’s stack field, the silt sedimentation time is generally over 48h, but the silt sedimentation time may be shorten at the later period of the construction, which is not less than one hour generally. Then even not treat it, there will still be no heavy metals pollution, but the secondary pollution of nitrogen, phosphorus, organic matters and suspended solids is inevitable. At this time, we can add the chemical treatment to decrease the concentration of the pollutants in the wastewater.




Table 113: Desilting wastewater composition of silt of the Sea of Grass

(results of experimental simulation)

Experimental

Condition

p

HSS

Chromatici

ty

COD

Mn

TN TPNH4

-NCu Pb Zn Cd As

Muddy

water at

the

mouth

of the

Daguan

River

Rest for

1h

6.

0

93

241 26.4

23.

3

0.25

3

17.

8

0.

05

0.0

3

＜0.01

＜0.0

1

0.

01

9

Rest for

48h

6.

071 34 7.67

16.

9

0.08

0

12.

9

0.

01

＜0.0

1

＜0.01

＜0.0

1

0.

00

6

Backgrou

nd of the

River

6.

486 8 6.74

11.

8

0.75

0

8.9

1

0.

00

2

0.0

2

0.03

9

0.0

03

0.

00

7

Muddy

water at

the

mouth

of the

Yunlian

g river

Rest for

1h

6.

0

10

1363 65.8

25.

2

0.10

0

21.

7

0.

11

0.0

40.08

0.0

1

0.

06

8

Rest for

48h

6.

283 58 10.6

24.

3

0.04

2

21.

4

0.

02

0.0

20.01

＜0.0

1

0.

02

9

Backgrou

nd of the

River

6.

468 9 7.58

9.7

5

0.85

7

7.4

9

0.

00

8

0.0

3

0.04

6

0.0

06

0.

02

6

Class I of integrated

emission standard

6-

970 50 100 — 0.5 25

1.

01.0 4.0 0.1

0.

5

- Water-environmental impact prediction of the surface water due to the stack field wastewater discharge

Prediction Model

The prediction model uses the River advection model of the big River (reservoir) under the no wind state for prediction, the model is recommended by Technical Guidelines for Environmental Impact Assessment (HJ/T2.1-2.3). The prediction model is as follows:

……………




Of which: r——The distance between the prediction point and the pollution discharge outlet, m;

Cr--Concentration of the pollutants at the prediction point, mg/l;


Cp--Concentration of the pollutants in the sewage, mg/l;

H——Average depth of the River reservoir, m;

φ——Mixing angle, arc, take π radian at the straight shore;

K1——Degradation coefficient of the pollutants in the River reservoir, 1/d;

Cp--Background concentration of the pollutants in the River reservoir, mg/l;

Determination of parameters

The desilting scope of the Longzi Lake is about 3.449 million m2 of the River bottom of the South River district, according to the analogy investigation, the water content of the silt of the desilting projects is 90%, the water content of the silt of pump inhalation is 95% and the water content of the silt at stack field is 90%.If the high pressure water gun can not recycle the project engineering wastewater, the generated total amount of the project engineering wastewater is about 1.15 million m3, calculate by 8 months to complete the project, the daily water discharge amount is 4792 m3/d.Suppose the high pressure water gun can recycle the project engineering wastewater, take into the full consideration of the construction period and other factors such as evaporation, the determined emissions of project engineering wastewater after the recycling can be decreased by 50%, that is the emissions of project engineering wastewater is about 580,000 m3, calculate by 8 months to complete the project, the daily sewage discharge amount is 2396 m3/d, nearly 0.67 m3/s.

The practice results of desilting project of the Sea of Grass, the Dianchi River show that: Most of the pollutants in the desilting slurry are concentrated in the suspended particles, as long as we can strictly control the emissions of the suspended particles into the receiving water body, most of the pollutants can be trapped in the stack field. The monitoring and test results of the Dianchi River Desilting project show that, the nitrogen and phosphorus content in the different desilting areas and under the different desilting operation conditions is very different accordingly. Now, we convert the test results of the water quality of the wastewater in the different desilting areas and different time uniformly to SS=100mg/L, then the values of T-N, T-P are shown in Table 114 .

Table 114: Nitrogen and phosphorus contents in the different desilting areas of the desilting project for the Sea of Grass, the Dianchi River.

Index Monitoring period Stack field Stack field 2 Stack field 3 Stack field 4




1

T-N

mg/L

First time 6.39 0.855 0.77 1.2

Second time 8.31 1.76 10.2 1.8

T-P

mg/L

First time 0.845 0.043 0.043 0.071

Second time 1.21 0.100 0.044 0.099

From the date in the table, we can see that, the two monitoring N and P contents can be different by 10-20 times. For the reasons, besides the differences of the pollutant content in the sediment, the “screen role” to the Sediment of the different desilting operation conditions and the working conditions of the stack fields is also the one of the reasons.

This evaluation conducts the prediction (determine the total nitrogen as per the NH3-N index) of the normal discharge of the wastewater according to the Class I emission standard of Integrated Wastewater Discharge Standard (GB8978-1996).During the later period, it may cause the abnormal emissions of the project engineering wastewater because of the short stay time, storm runoff and other factors. In the Dianchi River desilting project, the maximum concentration SS of the wastewater discharge is 380mg/L, TN is 38.76mg/L and TP is 4.60mg/L.The prediction of this environmental evaluation under the abnormal emissions takes the reference of the highest emission concentration of the wastewater of the Dianchi River desilting operation for calculation.

Table 115: Prediction emission concentration of project engineering wastewater Unit: mg/L

Total nitrogen Total phosphorus

Normal emission 15 0.5

Abnormal emission 38.76 4.6

Prediction Result

Through the calculation of the prediction model, the impact results of the wastewater emission to the water quality of the Longzi Lake are shown in Table116.

Table 116: Prediction of wastewater pollution contribution to the water quality of Longzi Lake

Unit: mg/L

TP TN




Normal

emission

Distance

from the

outlet

Predicted

concentration

Contributed

concentration

Predicted

concentratio

n

Contributed

concentration

100 0.70 0.45 14.5 13.06

200 0.57 0.32 10.0 8.56

400 0.34 0.09 3.02 1.58

500 0.28 0.03 1.89 0.45

600 0.26 0.01 1.54 0.1

800 0.25 0 1.44 0

Abnormal

emission

100 4.37 4.12 35.1 33.66

200 3.21 2.96 23.5 22.06

400 1.04 0.79 5.53 4.09

500 0.54 0.29 2.60 1.16

600 0.34 0.09 1.69 0.25

800 0.254 0.04 1.44 0

From the above prediction results, we can come to the following conclusions:

1. Within 400m distance from the outlet of project engineering wastewater, the regional concentration of the pollutants in water is decrease rapidly with the increase of the distance; TN and TP concentrations in the water body are close to the background concentrations at the 600m from the outlet of project engineering wastewater.

2. The impact scope of TP and TN to the water quality of the Longzi Lake is about 600m.

Under the normal wastewater emissions of the stack field, the contribution values of the concentration of TP and TN at the 450m from the outlet of project engineering wastewater are lower than the standard values of Class Ⅲ water quality of Environmental Quality Standard for Surface Water. Under the abnormal emissions, when TN is at about 550m from the outlet of project engineering wastewater and TP is at about 800m from the outlet of project engineering wastewater, the both contribution values of the concentration are lower than the relating provisions of Class Ⅲ water quality standard of Environmental Quality Standard for Surface Water.




Figure 29 : Prediction results of project engineering wastewater discharge on the water

- Longzi Lake water-environmental impact analysis of slurry transportation pipeline accident

As the span between the Longzi desilting spot and stack field is larger, so the slurry transportation pipeline of the project is also longer; Because affected by many factors such as the slurry transportation pipeline enduring the uneven pressure, pipeline quality, existing problems during the pipeline construction, it is possible to happen the pipeline rupture or leaking phenomenon which results in the slurry leakage. Once the pipeline is rupture, the slurry will infuse into the River again, which will have a certain degree of the impact to the water quality of the Longzi Lake. We shall inspect the slurry transportation pipelines regularly during the construction period, in order to avoid the pipeline rupture.

- Secondary pollution analysis of desilting project

Sediment desilting is one of the important measures to manage the internal pollution of the River. However, the sediment desilting is a massive man-made interference, the desilting works will promote the emissions of nutrient salts,



TN正常排放

05

1015

20(m

g/L)

浓度

0 200 400 600 800R(m)径向距离

TN事故排放

010

2030

4050

(mg/

L)浓度

0 200 400 600 800R(m)径向距离

TP事故排放

01

23

45

(mg/

L)浓度

0 200 400 600 800R(m)径向距离

TP正常排放

0.2

0.4

0.6

0.8

(mg/

L)浓度

0 200 400 600 800R(m)径向距离

Radial Distance R（m）




TN Normal emission

TN Accidental discharge

TP normal emission TP Accidental discharge

Conc

entr

atio

n (m

g/L) Co

ncen

trat

ion

(mg/

L)

Conc

entr

atio

n (m

g/L)

Conc

entr

atio

n (m

g/L)


heavy metals and other pollutants, so as to have some negative impacts to the environmental quality of the water body.

According to the comparative study of the water quality before and after the desilting in the Taihu Lake in Water Quality Risk Assessment for Sediment Desilting Operations in the Taihu Lake (compiled by Liu Aiju, Kong Fanxiang, Wang Dong), during the desilting operation period and the short time after the end of desilting, the total suspended solids, toxic metal ions and the contents of nitrogen, phosphorus and other nutrient salts in the water body increase, while the water transparency is lower down. The main reason is the desilting works making the surface sediment to resuspend, thus promoting the release of the nitrogen, phosphorus etc. nutrient salts and the toxic heavy metals in the sediment. Such environmental impact will go on for some time, after 2 months of the end of the desilting project, the contents of the suspended solids, heavy metal pollution levels and the contents of nitrogen, phosphorus etc. nutrient salts begin to decrease, which shows that, after the desilting, the suspended solids and absorbed nutrient salts, heavy metals ions in the water body can happen the quickly sedimentation. But compared with the situation before the desilting, the water-environmental quality of the inner River after nine months of the desilting is lower than the level before the desilting. After one year of the desilting, the water quality is increased and all the indicators are lower than the level before the desilting. This indicates the sediment desilting can improve and upgrade the water quality of the River.

- Analogy analysis of water-environmental improvement after the desilting of the Longzi Lake

The pollution sources for water eutrophication can be divided into the outer sources and the inner sources. The River sediment is an important nutrient reservoir for the River, after the decrease of the influent nutrient salts load or complete interception, the nutrient salts in the sediment will be released gradually and become the dominant factors for the River eutrophication.

At present, the Longzi Lake has completed the closure, Yangtaizi sewage treatment plan is under the construction, which is expected to complete and put into use till the end of 2007.Therefore, the sediment of the Longzi Lake becomes the main factor to impact the water quality of the Longzi Lake. There are more villages around the South River, the living sewage of the villagers has been discharged into the Longzi Lake directly without any treatment, the South River mainly collects the farmland runoff, living sewage of the neighboring residents and the influents from the South mountains, so the eutrophication level of the South River sediment is higher and it is special important to remove the South sediment with eutrophication. The South River’s area accounts for nearly 50% of the total area of the Longzi Lake, the desilting for the polluted sediment of the




South River is equivalent to remove a huge surface pollution source. Furthermore, it can also increase the storage capacity and the self-purification capacity of the River. The following table is the comparison of the water quality before and after the implementation of the Chaohu River desilting project.

Table 117: Comparison situation of water quality before and after the implementation of the Chaohu River desilting project

Unit: mg/L Year

Project

Water intake of first water treatment plant Inner River district of Xibakou

1998 1999 2000 2000 2001 2002 1998 1999 2000 2000. 2001 2002

TP 0.245 0.263 0.2800.12

7

0.10

3

0.17

2

0.23

30.280 0.324 0.180 0.139 0.143

TN 4.12 3.72 3.58 2.17 2.21 2.82 4.28 4.65 3.57 2.23 2.14 2.60

CODMn 7.12 6.10 6.80 4.18 3.59 4.21 8.60 8.50 6.32 4.10 4.76 4.93

Chlorophyll a

(mg/m3)/ / 2.25 0.90 0.94 0.57 / / 4.96 0.92 0.95 0.36

NH3-N 0.381 0.356 0.2940.15

3

0.16

0

0.28

7

0.45

00.289 0.305 0.160 0.180 0.197

Nitrate

Nitrogen3.60 3.28 3.26 1.92 2.10 2.28 3.80 4.12 3.26 2.15 1.98 2.15

DO 8.40 8.21 8.90 8.20 8.05 8.51 8.30 8.10 8.66 8.32 8.58 8.80

Transparenc

y (cm)/ 40 31 52 55 80 / 45 30 65 47 80

Total Hg0.000

05

0.000

05

0.000

05

0.00

005

0.00

005

0.00

005

0.00

0050.00005

0.0000

5

0.0000

5

0.0000

5

0.0000

5

Total arsenic 0.004 0.004 0.0040.00

4

0.00

4

0.00

4

0.00

40.004 0.004 0.004 0.004 0.004

Form the above table, we can see that, after the implementation of the Chaohu River desilting project in 2000, the total phosphorus content decreases by nearly 50%, total nitrogen content decreases by nearly 35~45%, thus, the desilting works can improve the water quality significantly.

After the implementation of the Chaohu River desilting project, it will control the emissions of the living sewage of the surrounding enterprises and the residents, as well as greatly reduce or completely eliminate the emissions of the outer pollutants. Part of the Southern ponds will be transformed into the artificial wetlands, after the transformation of the ponds; it can reduce or eliminate the bait material dosing and reduce the agricultural non-point source pollution. All of these will improve the water quality and release the eutrophication process of this regional water body at a certain extent.




6.4.2 Environmental impact analysis of ecology and landscape

6.4.2.1 Ecological improvement role of Longzi desilting project

The domestic relating research results show that, the light, transparency and the light compensation depth are the limiting factors for the growth of the submerged plants. After the completion of the desilting works, the water transparency will be improved markedly, the underwater light intensity will increase, which will be beneficial to the growth of the submerged plants and recover the quantity and the diversity of the submerged plants.

The algae will be changed fastest with the influence of the water quality. Along with the improvement of the water quality, the quantity of the algae will increase and the original dominant species of the microcystin, cryptophyta, anabaena and other tolerance algae will be replaced by the diatoms and the chlorophyceae. This makes the greater changes of the structure and the quantity of the algae.

Affected by the desilting operation, the structure of the benthic animals will be destroyed during the construction period and the species of the benthic animals will reduce, too. With the completion of the project, the water quality will improve and the habitat environment of the benthic animals will be restored gradually. The first present things are chironomid larva, limnodrilus sp. etc., no mollusks in the short term. After the further improvement of the water quality, along with the gradual recover of the large aquatic plants, the quantity of the mollusks will also increase gradually, the number of mollusks will also gradually increase and the macrobenthos may be restored then.

Fish is the higher organisms of the nutrient level in the aquatic ecosystem. The restoration and development of the fish are rest with the water quality and the recovery degree of other aquatic biological organisms with the lower nutrient level. The removal of the contaminated sediment expands the effective area and the place for the fish natural spawning ground. Looking at the short term, the desilting project will not have a greater impact on the species and quantity of the fish. From a long-term perspective, the desilting project can remove the heavy metals and toxic substances in the sediment, then to cut off their access to the food chain and the access for migration and enrichment in the food chain, thus to improve the quality of the fish. In addition, along with the gradual recovery of the phytoplankton and zooplankton, the bait will increase continually, which is beneficial to the growth and the reproduction for the eating fish.

6.4.2.2 Environmental impact analysis of the Longzi Lake slope dressing and restoration of riparian vegetation




The impact of the construction of the Longzi Lake slope dressing project to the ecological environment is shown in the generated soil erosion. Slope dressing is bound to break the existing coastal landforms and disturb the formed coastal ecological environment. Local slope will be cut off and create the new exposed soil; Local slope will be filled, the new filling soil will expose out of the slope surface, which is very easy for the soil erosion. As part of the soil erosion is inevitable, so we must control the construction operation area strictly during the construction process, as well as strengthen the management to minimize the soil erosion.

After the completion of the slope dressing, it will also have the local soil erosion. The generated strength of the soil erosion is closely related with the type of the slope. The main types of the river bank are natural river bank, hard river bank and the ecological river bank. In the Chapter "alternative proposal" of this report, we conduct the selection of the different types of the river bank from the ecological impact, applicable conditions and other aspects, thus to recommend the suitable type of the river bank for this project.

6.4.3 Sound environmental impact analysis

6.4.3.1 Tianhe drainage pump station

During the operation of the Tianhe drainage pump station, the noise mainly comes from the running noise of the pump motor and the air compressor system, wherein the noise source intensity of single pump unit is 75-85dB (A) generally; the main device of the air compressing system in the main pump house is the air compressor, whose noise source intensity is 85-95 dB(A), while the indoor reverberation noise is 90-100dB (A).

There are five axial flow pumps in Tianhe drainage pump station, for the single unit, calculate by five pumps at most at the same time and use the sound source superposition formula to calculate the source intensity.

Superposition formula to calculate several sound sources:

Of which: LPtotal——Sound pressure level at one sound receptive point, dB(A);

Lpi——Sound pressure level at i sound source to the sound receptive point, dB(A);

n——Total number of the sound sources.




When five pumps running together, the noise source intensity is 92 dB (A), the noise impact of the pumps and the air compressor running will use the point source attenuation formula to predict.

LA(r)= LA(ro)-20lg(r/ro)

Of which: LA(r)——A sound pressure at r point from the sound source, dB(A);

LA(ro)——A sound pressure at ro point from the sound source, dB(A);

r, ro——Distance, m.

Wherein the noise of the main pump house use the noise prediction model: LP = LA －20lgR－△L,Of which: LP —Generated sound pressure level of the point sound source at the prediction point;

LA —Sound pressure level at the reference location R;

△L—The caused attenuation by various factors, at the semi-free space of the sound source, △L is 8;

Usually, the sound isolation of the equipment station is 15 ～ 25 dB(A), this environmental evaluation predict the attenuation is 20 dB (A).

The prediction results of the pump running noise impact are shown in Table118.

Table 118: Prediction results of Tianhe drainage pump station’s noise

Noise

sourc

e

Source

Intensity

dB(A)

Influential

distance(m)

Influenti

al value

at 80m

from the

pump

station

Background

value dB(A)

Superposition

value dB(A)

Daytim

e

Nighttim

e

Dayti

me

Nightti

me

Dayti

me

Nightti

me

Water

pump

unit

92 71 224 53.9

38.4 36.6

54.0 54.0

Main

pump

house

80 18 56 41.9 43.5 43.0

Class I of Standard of Environmental Noise of Urban Area: Daytime 55dB(A), Nighttime 45dB(A)

From the prediction results in the table, we can see that: The influential distance of the Tianhe drainage pump station running noise is 224m at nighttime and




71m at daytime; the influential value at 80m from the pump station is 54 dB (A), which meets the daytime sound environmental standard, but exceeding the standard at nighttime.

The main sensitive points of the surrounding environment during the operation of the Tianhe drainage pump station are the Xuying Country at 500m southeast and the Production & living Management Area of Tianhe drainage pump station (located at nearly 80m northeast of the main pump house), which indicates the operation of the Tianhe drainage pump station will not cause the noise impact to the Xuying Country’s environment, but will make some noises to the workers of the living management area during the nighttime. But Tianhe drainage pump station will only be used during the flood season, the noise pollution is a short-term, temporary influence, with the little impact to the employees of the Drainage Pump Station.

6.4.3.2 Longzi Lake drainage pump station

After the completion of the Longzi Lake drainage pump station, the noise mainly comes from the running noise of the pump motor and the air compressor system, wherein the noise source intensity of single pump unit is 75-85dB (A) generally; the main device of the air compressing system in the main pump house is the air compressor, whose noise source intensity is 85-95 dB(A), while the indoor reverberation noise is 90-100dB (A).

There are five water pump units in the Longzi Lake drainage pump station, calculate by five pumps at most at the same time and use the sound source superposition formula to calculate the source intensity.

Of which: LPtotal——Sound pressure level at one sound receptive point, dB(A);

Lpi——Sound pressure level at i sound source to the sound receptive point, dB(A);

n——Total number of the sound sources.

When five pumps running together, the noise source intensity is 92 dB (A), the noise impact of the pumps and the air compressor running will use the point source attenuation formula to predict:

Of which: LA(r)——A sound pressure at r point from the sound source, dB(A);




LA(ro)——A sound pressure at ro point from the sound source, dB(A);

r, ro——Distance, m.

Wherein the noise of the main pump house use the noise prediction model:

Of which: LP —Generated sound pressure level of the point sound source at the prediction point;

LA —Sound pressure level at the reference location R;

△L—The caused attenuation by various factors, at the semi-free space of the sound source, △L is 8;

Usually, the sound isolation of the equipment station is 15 ～ 25 dB(A), this environmental evaluation predict the attenuation is 20 dB (A). The prediction results of the pump station running noise impact are shown in the following Table 119:




Table 119: Prediction results of the Longzi Lake drainage pump station’s noise

Noise

source

Source

intensity

dB(A)

Influential

distance(m)

Influential

value at

70m from

the pump

station

Background value

dB(A)

Superposition

value dB(A)

Daytim

e

Nighttim

e

Daytim

e

Nightti

me

Dayti

me

Nighttim

e

Water

pump

unit

92 71 224 55.1

59.4 44.4

60.8 55.5

Main

pump

house

80 18 56 43.1 59.5 48.0

Class I of Standard of Environmental Noise of Urban Area: Daytime 55dB(A), Nighttime 45dB(A)

From the prediction results in the table, we can see that: If not consider the environmental background noise, the influential distance of the Longzi Lake drainage pump station running noise is 71m at daytime and 224m at nighttime. The influential value of the water pump units to the Xingfu Country is 55.1 dB(A) and the influential value of the main pump house is 43.1 dB (A).Because the background noise of Xingfu Country is higher, so the noise after the superposition of the running noise of the Longzi Lake drainage pump station and its background noise is over the standard.

From the above results, the operation of the pump station will cause the adverse impact to the sound environment of Xingfu Country. However, the pump station will only be used during the flood drainage, so its impact to the surrounding sound environment is short-term. In addition, this project is under the most adverse circumstance of five pumps running at the same time, therefore, in the actual operating circumstances, the influence extent and scope will be less than the prediction results of this report.

6.4.3.3 Noise prediction of Huaishang Binhe Ave.

- Prediction parameters

The proportional allocation of the road large, medium and small vehicles is 8%, 30% and 62% respectively, while the traffic volume ratio of the daytime to the nighttime is 0.75: 0.25.The road prediction parameters are shown in Table 120 .

- Prediction model




Use the road noise prediction model of Federal Highway Administration (FHWA) to predict the road traffic noise.

Divide the road vehicles as the vehicle classification (such as, large, medium and small cars), then calculate the hour equivalent sound pressure of a certain type of vehicle.

Of which:

Leq(h)i--Hour equivalent sound pressure of the i vehicle, dB(A);

--The average radiation sound pressure of the reference energy of the i vehicle, dB(A);

Ni—The traffic flow passing a certain prediction point of the i vehicle within the designated time T (1h);

D0—The distance to the reference position of measuring the radiation sound pressure of the vehicle, D0=15m;

D—The vertical distance from the center lane to the prediction point, m;

Si—Average speed of the i vehicle, km/h;

T—Time for calculation the equivalent sound pressure, 1h;

a--Ground cover coefficient, which depends on the ground conditions at the site, a=0 or a=0.5;

Φa--Correction function on behalf of the section of the road with the limited length, wherein theΨ1, Ψ2 are the opening angles (rad) at the both ends of the section of the road with the limited length, see attachment B1;

ΔS—Attenuation value which caused by the shelters, dB(A);

Of which:

The equivalent sound pressure of the mixed traffic flow pattern is obtained by the superposition of the equivalent sound pressures of the various traffic. If divide the traffic flow into the large, medium and small cars, then the equivalent sound pressure of the total traffic flow is:




- Prediction Results

Prediction results are shown in Table 120 .

Within 50m area on both sides of the road, implement Class IV standard of “Standard of environmental noise of urban area” (Daytime 70dB(A)and nighttime 55 dB(A)), from the prediction results, we can see that:




Table 120: Prediction parameters table of typical sections’ noise

Section

Road

parameter

Distance to

prediction position

(from the center lane)

Traffic flow (vehicle/day)

Prediction period

Daytime

total amount

Large car

Medium car

Small car

Nighttime

total amount

Large car

Medium car

Small car

Binhe Ave.

Length:11.909m, Width:20~30m, speed: 40km/h, sloping: 1.5%

20m, 30m, 40m, 50m, 60m, 70m, 80m

2010

Table 121: Noise prediction table of typical sections with different distances Unit：dB (A)

Section Prediction periodPrediction distance (from the center lane)

20m 30m 40m 50m 60m 70m 80m

Binhe Ave.

2010Daytime / 57.7 53 50.9 49.5 48.4 47.6

Nighttime / 52.9 48.2 46.1 44.7 43.6 42.8

2010Daytime 56 50.6 48.2 46.7 45.6 44.6 43.9

Nighttime 51.4 46 43.6 42.1 41 40 39.3

6.4.4 Environmental Impact Analysis of Solid Waste

6.4.4.1 Analysis of disposal way of the Longzi Lake desilting sludge

The project volume of the Longzi Lake desilting is 1.15 million m3, estimate by the loose coefficient of 1.15, there shall be 1.32 million m3 desilting sludge in total. Desilting sludge will be placed at three stack fields on the south shore of the Longzi Lake, after the sludge dry, it will be used for the construction of the coastal vegetation.

Table Table 122 shows the comparison results of the Longzi Lake desilting sludge composition with the Soil Environmental Quality and Control Standards for Pollutants in Sludge from Agricultural Use. From the table, we can see that,




the desilting sludge of the South River can meet the Class III standard of the soil and the quality of soil will not harm or pollute the plants and the environment. The sediment can also meet the requirements of Control Standards for Pollutants in Sludge from Agricultural Use, thus can be used as the farm soil. So after the sludge dry, it can be used for the ecological landscape construction and will not adversely affect the vegetation.

Table 122: Comparison of the Longzi Lake desilting sludge

Unit: mg/kg

Ind

ex

South of the

Longzi Lake

North of the

Longzi Lake

Class III of Soil

Environmental Quality

Control Standards for

Pollutants in Sludge

from Agricultural Use

Cu 19.02 40.13 400 500

Pb 119.80 104.60 500 1000

Zn 65.58 178.67 500 1000

Cr 186.80 350.33300 (Dry land)

400 (Paddy field)

1000

As 16.40 15.9140 (Dry land)

30 (Paddy field)

75

Cd 0.35 0.45 1.0 20

TH

g0.04 0.01

1.5 15

As the soil of the stack field will be covered by the desilting sediment, the use patter of the soil will be changed completely. The bottom of the stack field is the clay layer with the poor penetration, the enclosure soil will carry out the anti-seepage treatment by the geomembrane, and therefore the original soil will not be affected. After the completion of the stack field transportation and spread, we will plant trees or create the landscapes according to the actual situation; the surface soil is the desilting sediment, whose soil feature value will be decided by the sediment.

Because the land use pattern has been changed, the original farm or fish ponds will be transformed into the landscape green spaces, not as the agricultural productive land, so it will not cause the harm to the human health.

6.4.4.2 Analysis of disposal way of Xijiagou desilting sludge




Xijiagou desilting project has Baligou and Xijiagou such two desilting rivers, with a total length of 11km. Wherein, upstream river at the south of Yanshan Road, Xijiagou is 6.2km, while the river at the south of Tushan road, Baligou is 4.8km.The excavation along the project is 437,600 m2 in total and the fill is 170,000 m2. Of which, the excavation of Xijiagou project is 375,100 m2 and the excavation of Baligou project is 52,500 m2. Baligou project includes the flood control construction, it shall fill up the beach land to 23.5m of the designed height, thus the fill is about 170,000 m2.

The generated sludge of Xijiagou desilting river will be placed nearby. Wherein, the sludge since Yanshan Road to the Southern wall of Naval Academy will be abandoned at the eastern coast and the rest will be placed on both sides of the ditch. The designed height of the mounded soil is 2.0m, the slope is 1:3, the width of the mounded soil will depend on the soil amount of the section, leave the beach land with 10m width between the mounded soil and the mouth of the ditch. The sludge of Baligou project will be placed nearby and used as the fill for flood control project.

- Environmental impact analysis of sludge disposal

Some houses of the surrounding residents are close to the river at the Yinhe Bridge, Yanshan Road, Xijiagou, therefore the desilting project will have some impact on the residents living nearby. The water content of the desilting sludge is high, if placed at the shore, it will have the leachate, especially on the rainy days, the leachate may be washed into the river, thus affect the water quality of the water body. If the muddy water is washed into the urban roads, it will also affect the sanitation of the surrounding roads. The placed sludge at the shore, after the dry, the sludge is apt to generate the dusts through the vehicles driving. Because of the numerous emissions of the living sewage and industrial wastewater in the river, as well as the piled living garbage, the stack field for desilting sludge will have the foul smell, especially in the summer, which mainly dues to the rot of the living garbage.

- Analysis of the sludge disposal method

The desilting sludge shall be internal used of this project, to keep the earthwork balance, so as to reduce the volume of sludge dump and outer transportation, further to mitigate the adverse environmental impact of the desilting sludge.

The residents and the enterprises at the both shores of Xijiagou set the pollution discharge outlet privately, the living sewage was discharged into the river without any treatment, as well as the piled garbage along the both shores, which seriously affect the surrounding environment of Xijiagou. At present, there is serious sediment in the river, the surface sludge has the higher nutrient content which affected by the discharge of the surrounding production wastewater, living




sewage and the dump of the living garbage. Compared with the background values of Anhui Province, the Hg content in the sediment of Xijiagou and Baligou is 2.2~2.9 times of the soil background value of Anhui Province, which mainly because of the discharge of the production wastewater, if the disposal is not proper, then it may cause the ecological harm to the local aquatic ecosystem.

- Sludge Dumping

According to the monitoring results of Baligou and Xijiagou sediment, the monitoring sediment meets the requirements of Class III of Soil Environmental Quality (GB15618-1995), which can be heaped up nearby, after the drying, we can plant trees above them. However, in order to avoid the heavy metal materials affecting local groundwater environment during the place of the sediments, we shall place the anti-seepage membrane below the stack field before the place of the sludge. As the surface sediment contains higher organic matters, the foul smell impact is more obvious. If want to heap up the sludge along the shore, we shall take effective measures to control foul smell pollution.

Used as farmland and forest land

Table 122 compares the monitoring sediment of Baligou and Xijiagou with the Class III standard of Soil Environmental Quality (GB15618-1995) and Control Standards for Pollutants in Sludge from Agricultural Use (GB4284-84).From the table, we can see that, the monitoring sediment of Baligou and Xijiagou both meet the requirements of Class III standard of "Soil Environmental Quality" (GB15618-1995) and Control Standards for Pollutants in Sludge from Agricultural Use (GB4284-84), which shows that the desilting sludge is up to the requirement of protecting the production of farming & forestry and the normal growth of plants, as well as no harm or pollution to the plants and the environment basically. From the monitoring results of Baligou and Xijiagou sediment, we found that the organic matter content of the two rivers is relatively high with better soil fertility. Therefore, the project may consider placing the desilting sludge along the spot and using the sludge as the farmland, forest land and fill. The environmental evaluation suggests using the generated sludge of Baligou desilting as the soil for green belt along Baligou.

Table 123: Comparison of Baligou, Xijiagou sediment with the standard

Unit: mg/kg

Monitoring

point

Organic

matter

(%)

Arsenic Pb HgChromiu

m

Total

phosphor

us

Total

nitrogen

1# (Baligou) 2.04 10.3635.

50.064 34.6 1.88 75.111




2# (Xijiagou) 7.01 13.0642.

50.085 60.4 3.22 59.796

(GB15618-

1995)

Class III

standard

—

30

(Paddy

field)

40 (Dry

land )

50

01.5

400

(Paddy

field)

300 (Dry

land )

— —

GB4284-84 — 7510

0015 1000 — —

Used as fill

The flood control project of Baligou needs the fill for about 170,000 m2. Xijiagou desilting will generate the excavation of nearly 375,000 m2, we can consider using the better sludge at the lower as the fill for flood control project of Baligou. But before using the Xijiagou desilting sludge as the fill for flood control project of Baligou, we shall inspect the soil quality, to ensure the soil quality meet the requirement of the project.

Transport to refuse landfill

As some districts of Xijiagou, the surface has the mixture of the living garbage and construction wastes, so it can not be used as the fill or agricultural soil. Moreover, the surface sediment has higher organic matter content, which will have a more obvious foul smell, therefore it is unsuitable to place along the shore and need to transport to the refuse landfill for sanitary landfill.

The Sanitary Landfill of Bengbu City located in the southern slope of Laoshaoxi, that is 1.5km northeast of the east of Lilou country, with a distance of 13km from the City’s center. Its engineering design scale is 800t / d, with the total capacity of 4 million m3. The Sanitary Landfill uses the new technology of "quasi-aerobic landfill", that is after the transportation of the garbage, it will conduct the earth covering and rolling. Till the landfill to the designed height, it will conduct the medium-term covering and closure. We shall plant the grass or shallow-rooted plants on the final coverage soil. The garbage leachate uses the anaerobic lagoon treatment process. After the anaerobic lagoon treatment and the leachate achieved the Class III standard of Standard for Pollution Control on the Landfill Site for Domestic Waste (GB16889-1997), transport it to the First Sewage treatment plant of Bengbu City for centralized treatment.

The Sanitary Landfill of Bengbu City was completed at the end of September, 2004, with the service life of 16 years. According to the disposal scale of the




refuse landfill, it can receive part of the generated desilting sludge which contains the living garbage and the construction wastes.

To avoid generate the leachate during the transportation of the desilting sludge to sanitary landfill, and have the adverse environmental impact along the way, the desilting sludge shall be natural dried before the transportation to the landfill.

- Conclusion

Summarizing the above analysis, as the surface sludge of Xijiagou is affected greatly by the discharge of the living garbage, construction wastes and living sewage, this report recommend that, the surface sludge of Xijiagou which doped with the living garbage and construction wastes is not suitable for place on spot or reuse, which shall be sent to the Sanitary landfill for sanitary landfill. Lower soil is better, the desilting soil which meets the requirements of the fill can be used as the fill for flood control project of Baligou. The remaining part can be placed at both sides of the ditch, we shall place the anti-seepage membrane below the stack field before the place of the sludge, after the completion of the deposition, plant the vegetation to reduce soil erosion on the above of the desilting yard.

6.4.4.3 Analysis of sludge disposal of Mohekou sewage treatment plant

The main solid wastes of sewage treatment plant are composed of grille residual, grit chamber sediment, dewatering sludge and the living garbage of the workers, under certain temperature and humidity, especially in the hot weather, these substances are apt to decay and stink by the microbial function, wherein the dewatering sludge has the largest impact on the surrounding environment, whose main characteristics are:

① High water content (≤80％),easy to lose;② Fine particles and poor water permeability;

③ Easy to become a breeding ground for mosquitoes and thus become the spread source of the diseases;

④ Easy to generate the leachate, once the water pollutants enter into the water body, they will pollute the surface water and groundwater.

The generated volume of the solid wastes of the proposed project during the operation period is shown in Table 124 .

Table 124: Emissions of main solid wastes of sewage treatment plant

Name of project Type of solid waste Discharge Water




amount content

Sewage treatment plant

Grille residual 1.8m3/d 85～90％Grit chamber sediment 0.9m3/d 60％

Residual sludge 14.3m3/d 75％Living garbage 30kg/d —

1. Environmental impact of the sludge dewatering

Generally, it need to concentrate before the sludge dewatering, the concentrated tank often emit the foul smell, especially in the hot summer, there is often floating sludge on the pool surface, which is very easy to breed the mosquitoes.

After the concentration, during the sludge dewatering, the dewatering room will emit the foul smell; if there is any leakage during the operation of the sludge dewatering, it will cause the environmental pollution.

2. Environmental impact of the sludge dump process

The dewatering sludge shall be clean and transported in time, for the sludge which can not be timely removal, it shall have the temporary storage place. The dewatering sludge will form the muddy when meet with the water, with the good mobility and easy to lose; by the rainwater washing, the leachate will contain lots of pollutants to pollute the ground surface and groundwater bodies. Therefore, the dewatering sludge can not be placed at ease, we shall set up the temporary stack field after the special treatment and have the anti-seepage layer, as well as adding the awning; In addition, the dewatering sludge is not completely stable, so the long-term storage of the sludge will have the anaerobic digestion. The generated stench of H2S and other materials will affect the air quality; the dump place of dewatering sludge is also a breeding ground for mosquitoes, which have the adverse impact to the sanitation. Given the above reasons, the dewatering sludge shall be timely removed, avoid piling up in the factory.

3. Environmental impact of the sludge transportation

Despite the sludge has been treated within the factory at varying degree, but the sludge still have some harmful pollutants. The sludge of the sewage treatment plants of this project just through the concentration and dewatering treatments, which can not achieve the requirements of stable and harmless, the sludge contains large amounts of the corruptive organic matters and other pathogenic microbes, such as Escherichia coli, eggs of ascarid. Therefore, the environmental problems during the transportation of sludge are very important.




Currently, the main transportation of sludge is the vehicle-transporting. If the vehicle body and the wheels contaminated by the sludge during the loading and unloading process, or the closeness function of the vehicle don’t work, then the vehicle will leak the sludge around the sewage treatment plant or along the road, which will create the pollution to the road. The transport mode of the sludge shall stop the phenomenon of cross-flow of muddy water and the foul smell. Sewage treatment plant shall use the closed special vehicles, which can prevent the leakage of water, the leakage of soil and its disturbance. Meanwhile, the sludge transportation time shall be strictly controlled, avoid the peak traffic times as far as possible. In short, the transportation of sludge is a problem that can not be ignored, it must be taken seriously.

4. Disposal method of the sewage treatment plant’s sludge

The sludge is a product during the sewage treatment process, it is an important component of the sewage treatment, the aim of the sludge treatment it to reduce the water content of the sludge and sludge volume, so as to achieve a stable state, and create the conditions for further disposal and comprehensive utilization, the general process is "concentration- dewatering -disposal" or "concentration –digestion –dewatering -disposal."

According to the feasibility study of the project, due to the sewage treatment process of this project uses the biological nitrogen and phosphorus removal process, the sludge age is longer, the sludge state is more stable, can not carry out the nitrification treatment, but if use the nitrification treatment, we shall increase a series of structures and equipments of the digestion pool, heating, mixing and marsh gas handling etc., at the same time, it need to increase the investment, for the land area of the sewage treatment plant in the park is limited, so it can not construct the nitrification treatment system for the sludge.

According to the analogy information, the sludge component of the sewage treatment plant has some relationship with the water quality of the treated sewage. For the sewage treatment plant which mainly treats the industrial wastewaters, the components of its residual sludge will have higher content of the heavy metals, which is far beyond the standard of agricultural sludge; therefore, this environmental evaluation recommends not to use the sludge as the farmland fertilizer, but to conduct the safe landfill disposal.

5. Disposal of the grille residual and sediment

The grille residual and grit chamber sediment are both the garbage of the sewage treatment plant, must be collected, stored and transported properly. Recommend to be transported to the refuse landfill together with the living garbage. The specific storage, packaging and transportation etc. must be in accordance with the relating provisions strictly. Although its generated volume is




not big, but if ignore it, it will cause harm to the environment. The light waste plastic bags and other packaging will wind waft around the sewage treatment plant; the sediment or the floating sediment must be removed timely, otherwise they will stink, decay and breed the mosquitoes.

6. Environmental impact of disposal of living garbage

The proposed sewage treatment plant will generate less living garbage, it can be cleaned and transported along with the grille residual and grit chamber sediment, no need to treat alone. But the clean and transport must be timely, otherwise, the long-term storage will make the garbage dump become the breeding grounds for mosquitoes, which also have the adverse impact to the plant sanitation. The clean and transport process shall also be in line with the health and safety procedures strictly, avoid spill and disturbance along the road, thus cause the pollution on the environment.

7. Summary of refuse landfill

The Sanitary Landfill of Bengbu City located in the southern slope of Laoshaoxi, that is 1.5km northeast of the east of Lilou country, with a distance of 13km from the City’s center. Its engineering design scale is 800t / d, with the total capacity of 4 million m3. The Sanitary Landfill uses the new technology of "quasi-aerobic landfill", that is after the transportation of the garbage, it will conduct the earth covering and rolling. Till the landfill to the designed height, it will conduct the medium-term covering and closure. We shall plant the grass or shallow-rooted plants on the final coverage soil. The garbage leachate uses the anaerobic lagoon treatment process. After the anaerobic lagoon treatment and the leachate met the standard of “Standard for Pollution Control on the Landfill Site for Domestic Waste” (GB16889-1997), transport it to the First Sewage treatment plant of Bengbu City for centralized treatment.

The Sanitary Landfill of Bengbu City was completed at the end of September, 2004, with the service life of 16 years. According to the disposal scale of the refuse landfill, it can receive the generated desilting sludge of this project.

6.4.5 Atmospheric Environmental Impact Analysis

6.4.5.1 Project of sewage treatment plant

- Meteorological characteristics of pollution

(1) Temperature, wind direction and wind speed

The evaluated district locates in the transition zone of the subtropical zone and warm temperate zone, with the four distinct seasons and a mild climate, the average annual temperature is 15.6℃; The statistical results of the




meteorological information in the recent five years show that, the yearly dominant wind direction of Bengbu City is east-northeast (ENE), with the frequency of 11%, the secondly dominant wind direction is northeast (NE) and east (E), with the frequency of 8%.Due to the impact of the seasonal weather, the wind direction and frequency present the different characteristics during the different season; the average annual wind speed is 2.73m/s, for the average wind speed in each season, the wind speed in Spring is the maximum, while in Autumn is the minimum. The yearly and seasonal average temperature and wind speed are shown in Table 125 , the statistical results of annual wind direction are shown in Table 126 , the annual wind direction rose diagram is shown in Figure 30 .

Table 125: Statistical table of seasonal and yearly average temperature and wind speed of Bengbu City

Season Winter Spring Summer AutumnWhole

year

Average temperature

(℃)1.31 15.6 28.2 16.7 15.6

Average wind speed

(m/s)2.76 2.61 2.57 2.69 2.73

Table 126: Statistical results of wind direction and frequency in each month of the year

Month

Wind

directio

n

1 2 3 4 5 6 7 8 9 10 111

2

Wh

ole

yea

r

N 3 4 3 3 3 1 2 3 3 3 4 3 3

NNE 5 7 7 5 4 4 4 9 7 5 7 6 5

NE 71

010 7 7 4 6 8

1

09 6 8 8

ENE1

0

1

115 14

1

39 10 17

1

213 10 8 11

E 6 8 7 5 5 6 5 6 6 6 5 4 8

ESE 5 6 6 7 8 9 7 6 6 6 3 2 7




Month

Wind

directio

n

1 2 3 4 5 6 7 8 9 10 111

2

Wh

ole

yea

r

SE 3 5 4 4 7 6 5 3 4 4 2 2 5

SSE 3 5 6 9 7 13 9 4 5 5 4 5 6

S 3 4 3 7 3 5 8 3 4 4 3 4 4

SSW 6 6 5 9 5 8 8 3 3 3 6 5 6

SW 6 4 3 5 3 4 3 2 2 2 4 2 5

WSW 5 3 2 3 3 3 3 1 3 3 3 3 3

W 5 3 2 2 2 1 1 2 2 2 2 4 3

WNW 6 4 3 4 2 2 2 3 3 3 4 7 4

NW 4 3 3 3 2 2 2 2 4 4 4 4 3

NNW 4 3 4 2 2 2 1 3 2 2 5 4 3

C1

8

1

518 15

2

524 25 26

3

030 32

2

918

Figure 30 : Annual wind direction rose diagram of Bengbu City

(2) Atmospheric stability




Using the classification of the Pasquill stability speculated in the Appendix D of GB/T13201-91 to classify the atmospheric stability of Bengbu City, it can divided into A, B, C, D, E, F six Classes since the strong instability to stability.Statistics results show that, the frequency of the neutral stable Class D is the highest; accounting for 54.0%, which followed by a more stable Class E, accounting for 16.6%, the stable Class F accounts for 16.1%, the distribution frequency for each class of stability is shown in Table 127 .




Table 127: Statistical table of distribution frequency of Atmospheric stability

Stability

Frequency %

Time

A B C D E F

Spring 0.2 3.2 6.9 48.4 19.1 22.2

Summer 0.3 2.8 8.5 58.3 14.4 15.7

Autumn 0.5 3.0 8.2 58.7 17.3 12.3

Winter 2.6 9.2 8.2 50.5 15.5 14.2

Whole year 0.9 4.6 7.9 54.0 16.1 16.1

(3)Rainfall

The regional average rainfall information of many years is shown in Table 128 .

Table 128: Rainfall Characteristics Table

Mont

h1 2 3 4 5 6 7 8 9

1

011 12

Whole

year

Avera

ge

rainfa

ll of

many

years

(mm)

26

.5

3

2.

5

6

0.

7

62.

7

74.

8

106

.4

206.

3

15

4.3

86

.9

3

7.

9

40.

4

22.

0911.4

- Environmental impact assessment of odor pollutants

(1)Prediction of factory boundary concentration

Prediction Model

The exhaust pollution of this project is mainly the unorganized emission of the odor pollutants such as H2S and NH3, the area of the emission source is less than 1km2.According to the Technical Guidelines for Environmental Impact Assessment - Atmospheric Environment (HJ/T2.293),the diffusion model of the downwind surface pollutants adopts the area source diffusion model, that is taking the emissions of the area source as the point source which located its geometric center, after the appropriate amendments of the diffusion parameters,




then uses the point source model to calculate directly, thus to present the emissions of the area source approximately.

The diffusion formula of the point source module is as follows:

Fy

uQyxc

yzy

2

2

2exp

2),(

k

kn z

e

z

e zHnhzHnhF 2

2

2

2

22

exp2

2exp

Of which: C(x,y) －Ground concentration of pollutants, mg/Nm3;

　　Q－Emissions at unit time, mg/s;

　　X －Downwind horizontal distance from the exhaust chimney, m;

　　Y －Vertical distance from this point to the horizontal surface of the average wind direction through this source point, m;

　　U－Average wind speed of source height, m/s;

　　He －Effective source height, m;

　　h －Height of the mixed layer;

　　n －Reflection times (Generally n=4); 　 σy—Horizontal diffusion parameter, m;

　　σy—Vertical diffusion parameter, m;

Amend the σy and σz respectively by the area source model:

15.2

3.42

2

11

HX

aX

az

yay

Of which: X――The distance since the receiving point to the center of the area source;

――The length of the area source at y direction;

――Average emission height of the area source.

Model parameters selection

The diffusion parameters, height of the mixed layer adopts the recommended values of “Technical Guidelines for Environmental Impact Assessment - Atmospheric Environment” (HJ/T2.2-93).




Prediction contents

Average wind speed, hour concentration values of the downwind pollutants with the different stabilities.

Prediction results and impact assessment

Average wind speed, hour concentration prediction results of the downwind H2S and NH3 with the different stabilities are shown in Table 129 and Table 130 .

Table 129: Average wind speed, hour concentration prediction results of the downwind H2S with the different stabilities

(mg/Nm3)

Name of pollution sourceDistance

(m)A B C D E F


0 0.0020 0.00210.001

80.0018

0.001

50.0018

20 0.0041 0.00440.004

10.0038

0.003

40.0039

40 0.0055 0.00580.008

50.0114

0.012

40.0041

60 0.0036 0.00380.006

20.0094

0.011

00.0024

80 0.0025 0.00270.004

70.0077

0.009

60.0016

100 0.0019 0.00200.003

70.0065

0.008

40.0011

120 0.0015 0.00150.003

00.0055

0.007

30.0008

140 0.0011 0.00120.002

40.0047

0.006

50.0006

160 0.0009 0.00100.002

00.0041

0.005

80.0005

180 0.0008 0.00080.001

70.0036

0.005

20.0004




200 0.0007 0.00070.001

50.0032

0.004

60.0004

220 0.0006 0.00060.001

30.0028

0.004

20.0003

240 0.0005 0.00060.001

10.0025

0.003

90.0002

260 0.0004 0.00050.001

00.0023

0.003

50.0002

280 0.0004 0.00040.000

90.0021

0.003

20.0002

300 0.0004 0.00040.000

80.0019

0.003

00.0001




Table 130: Average wind speed, hour concentration prediction results of the downwind NH3 with the different stabilities

Name of pollution sourceDistance

(m)A B C D E F


00.009

60.0105

0.011

10.0098

0.009

10.0083

200.020

90.0218

0.023

10.0217

0.020

00.0179

400.021

50.0290

0.030

70.0452

0.060

30.0658

600.012

80.0190

0.020

10.0329

0.049

60.0582

800.008

40.0134

0.014

20.0248

0.040

80.0507

1000.005

90.0099

0.010

50.0194

0.034

00.0442

1200.004

40.0077

0.008

20.0155

0.028

80.0388

1400.003

40.0061

0.006

50.0128

0.024

80.0343

1600.002

70.0050

0.005

30.0107

0.021

50.0306

1800.002

20.0041

0.004

40.0091

0.018

80.0274

2000.001

80.0035

0.003

70.0079

0.016

70.0248

2200.001

50.0030

0.003

20.0068

0.014

90.0224

2400.001

30.0027

0.002

80.0060

0.013

40.0205




2600.001

10.0023

0.002

50.0053

0.012

10.0188

2800.001

00.0020

0.002

20.0048

0.011

00.0173

3000.000

80.0018

0.002

00.0043

0.010

10.0160

From the above tables, we can see that: the maximum value of H2S of sewage treatment plant is 0.0041mg/Nm3, the maximum value of NH3 of sewage treatment plant is 0.0658mg/Nm3, which appear at the edge of the processing modules of the sewage treatment plant (40m, area source takes 60×60m2); the hour concentration of H2S and NH3 at factory boundary are both in line with the threshold requirements of Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB18918-2002)(The concentration of H2S<0.06mg/Nm3, the concentration of NH3<0.06mg/Nm3).

- Calculation of sanitation protection distance

① Prediction model of sanitation protection distance

According to the speculated control method of sanitation protection distance of Technical Methods for Making Local Emission Standards of Air Pollutants (GB/T13201-91), calculate the sanitation protection distance of odor of sewage treatment plant.

The sanitation protection distance of all industries and enterprises shall be calculated by the following formula:

Of which: QC － Control level of unorganized harmful gas emissions of the industrial enterprises, kg/h;

　　Cm －Standard concentration limits, mg/Nm3;

　　L －Then needed sanitation protection distance of industrial enterprises, m;

　　γ －Equivalent radius of emission source at the production unit, calculate it based on the covering area of the production unit S(m2), γ=(S/π)0.5;

　　A, B, C, D－Calculating parameters of sanitation protection distance② Parameters selection and calculating results




Determination of unorganized emission source intensity: unorganized emission source intensity of sewage treatment plant, H2S:0.0227kg/h, NH3:0.12kg / h.

Standard concentration limits: Hygienic standards for the Design of Industrial Enterprises (TJ36-79)stipulates the one time maximum allowable concentration limits of the residential area: the one time maximum allowable concentration limit of NH3 is 0.20mg/Nm3, while the one time maximum allowable concentration limit of H2S is 0.01mg/Nm3.

Area of unorganized emission source: 3600 m2.

Calculate the parameters of A, B, C, D: According to GB/T13201-91, select A as 400, B as 0.01, C as 1.85 and D as 0.78.

Based on the calculation, the sanitation protection distance of sewage treatment plant is shown in Table 131 .

Table 131: Calculating results of sanitation protection distance of sewage treatment plant

Impact factor Sanitation protection distance (m)

H2S 155

NH3 44

Around the sewage treatment plant is the open space, within the distance of 200m, there is no environmental protection target. But at the south of sewage treatment plant is the Bang-Ning highway, although the distance between the sewage treatment plant and the buildings emitting the orders meet the requirements of ”Quality Standard for Construction of Municipal Wastewater Treatment Plant Engineering”, but in order to reduce the impact, we shall construct the green protective buffer belt around the plant (the width is better to be10m, for the green protective buffer belt at the south of the factory boundary shall be appropriately widened and densified), and we shall plant the flowers and trees within the factory to block the diffusion passes of odor pollutants. In addition, the sewage treatment plant should adjust the layout of the factory appropriately, place the buildings which emitting the odor at one side far from the road and arrange the office within the sewage treatment plant at the upwind.




7 Mitigation Measures

7.1 Mitigation Measures during Construction Period

7.1.1 Mitigation Measures against Air Pollution

The air pollutants of this project produced during the construction period mainly include odor, flying dust and exhaust gas from machinery and vehicles.

- Mitigation Measures against Odor

The following mitigation measures will be taken during the construction period against the odor from the desilting projects and the possible improper disposal of solid waste;

1) The desilting projects are to be implemented by phase in the dry season after the completion of wastewater interception project on along the river banks, and the summer will be avoided for the project implementation;

2) The sediment and garbage from desilting should be transported outwards for proper disposal as soon as possible, and it is not allowed to dump the silt at the environmentally sensitive points within 30cm around the project site;

3) The hermetically sealed tank car should be used for the transportation to prevent the possible impacts on the nearby residents. The silt and garbage unable to be transported immediately should be packed in straw bags for storage;

4) More attention should be paid to the personal protection of construction workers, inspection and the preparation of first-aid measures.

- Mitigation Measures against Flying Dust

1) To prevent the flying dust during transportation, the management should be strengthened during the construction by the following measures: Load & unload the construction materials with care; Install the wheel cleaning equipments at the exits of the

construction site;




Appoint someone responsible for cleaning the wheels and the site entry & exit;

Strictly prohibit to drive on road if the wheels are with clay; The vehicles easy to generate flying dust, such as the trunks

carrying lime, sand & gravel, cement and pulverized fuel ash (PFA), should be covered with paulin;

The vehicles should not be overloaded to prevent scattering and losing during transportation;

The driving routes and timing should be well planned to avoid the sensitive areas, such as the populated area, the transportation centre and the residential area;

The road should be immediately cleaned if the mud is scattered on the road during transportation;

For the road section with high environmental requirements, the transportation should be done at night according to the actual conditions;

2) To prevent the flying dust in the construction sites, frequent water sprinkling and cleaning are the very effective measures. It is shown by relevant survey that about 60% of the flying dust at the construction site comes from the transportation vehicles. Generally, 4-5 times of water sprinkling per day could reduce the scope impacted by the flying dust from 100m to 20-50m. And If water is sprinkled after the cleaning work, the dust control efficiency can reach over 90 ％ . Therefore, the following measures should be taken at the construction sites: Ground treatment: Harden the ground of the construction site. Use

the concrete ground if possible; Material handling and storage: Prepare special warehouse for the

construction materials like cement. Keep the material packages intact as far as possible during the transportation, loading and unloading process, and clean the scattered cement in time;

Water sprinkling and site cleaning: The special person should be appointed for the water sprinkling and site cleaning work (at least twice per day). One sprinkler is required for the construction site of each sub-project. When the construction site is near the environmentally sensitive points, the sprinkling frequency and intensity should be increased;

Cement mixing: The plant-mixed cement and close transportation vehicles should be used for the construction, especially for the sites with many environmental sensitive points. As for the temporary and small-scale cement mixing sites, their location should be far away from the residential area as far as possible;




Solid waste dumping: Do not open dump the lime and sandy soil as far as possible. Timely transport the spoil and construction waste to the disposal site designated by the municipal administrative departments; Use the dump sites far away from the water bodies with the established water sprinkling and cleaning system to increase the surface water content. Strengthen the management of earth fill dump sites by surface compacting, periodical water sprinkling and coverage;

Vegetation rehabilitation: The vegetation should be immediately rehabilitated after the temporary land use to prevent soil erosion;

For the urban sewage network projects and the wastewater interceptor: Set up the shield around the construction site if there

is any environmentally sensitive target within 200m, such as the Wuhe project;

For the desilting projects: The desilted sediment should be compacted in time when being dumped along the banks for drying. And the vegetation should be rehabilitated to prevent the secondary flying dust pollution from dried-up silt. The garbage from desilting should be timely transported to the landfill site to minimize the storage time on the site; and during the transportation, the garbage should be covered to prevent from falling all the way. For the desilting projects in Huaiyuan, the desilted sediment should be used for the embankment and vegetation rehabilitation as far as possible.

- Vehicle Exhaust Gas

1) Reducing the air pollut ants in the vehicle exhaust gas is the fundamental way to alleviate the air pollution. The detailed measures

may include: use qualified lead-free gasoline for the transportation vehicles and construction machinery, but forbid to use inferior oil; Strengthen the daily maintenance and regular inspection of the fuel-burning machinery and equipments; Operate the engines only when they are in good conditions; at the same time, the tail gas emission purifier should be installed to meet the emission standard;

2) Reinforce the t ransport management by the spot check on the exhaust gas emission certificate and the prohibition of the vehicles exceeding the exhaust gas emission standard from driving on road;

3) Strengthen the management of the g reen belt s for the both sides of the streets by planting arbor, frutex and the lawn to absorb the

pollutants in the exhaust gas, control the diffusion of the exhaust gas into the ambient environment;




4) Other s : During the construction, the abandoned construction material is forbidden to be reused as fuel; the canteens for the construction sites should use Liquefied Petroleum Gas or Electric Cookers, instead of Oil Cookers.

7.1.2 Mitigation Measures against Noise Pollution

According to the analysis of noise impacts during construction, the construction noise is inevitable, which will have great impacts on the ambient environment. Since there are sensitive points for all the sub-project construction sites, during the specific construction process, the “Regulations of the People’s Republic of China on Prevention and Control of Pollution” and the local regulations on the prevention and control of noise pollution should be strictly followed by the following measures:

- Reasonable Arrangement of Construction Time

1) Develop the scientific construction plan to avoid the operation of high-noise equipments at the same time; in addition, the high-noise equipments should be operated in the daytime as far as possible. For the areas with environmentally sensitive points within 100m away from the construction sites, it is prohibited to operate the equipments with high noise and vibration at noon or at night;

2) When the construction activities is near the school or hospital, a scientific construction schedule should be developed to minimize the impacts of high-noise equipments by consulting the school or hospital about the operation time of the high-noise equipments or try to arrange the operation at weekend or when there is no class.

- Reasonable Layout of Construction Site

1) Reduce the construction noise: Keep the high noise operation area far away from the acoustically sensitive points. The temporary sound proof enclosing structure is required for the specific construction sites with serious noise impacts. It could be also considered to build the temporary worker barrack to the side near the sensitive points to replace the function of sound insulation wall. The civil works should try to arrange several sets of equipments to operate at the same time in order to shorten the impact duration. And the fixed vibrated sources in the construction site should be centralized to reduce the impacted scope by the vibration;

2) Reduce the traffic noise: The entry and exit for the transportation vehicles in the construction site should be far away from the residential area. Minimize the night transportation volume, and limit the speed of large




trucks and their speed when passing the residential area. Ensure the regular maintenance of the transportation vehicles, reduce or prohibit the horn blowing, and rationalize the transportation routes.

- Reduction of Equipment Noise Level

1) Select the low noise equipments or the equipments with sound insulation and noise elimination equipments as far as possible, such as hydraulic machinery instead of fuel burning machinery, use high-frequency vibrator, etc;

2) Reduce the noise of the fixed mechanical equipments, excavator and earthmoving equipments, such as bulldozer, by installing noise silencer for the exhaust pipe and separating the vibrating parts of the engine;

3) The noise level of the mechanical equipments will increase with the vibration of loosing parts or the damage of silencer, therefore, the inspection and maintenance should be strengthened for the mechanical equipments. The integral equipments should be firmly mounted with good ground contact. Vibration-absorbing base should be used to reduce the noise if possible;

4) The unused equipments should be closed immediately, and the vehicles entering the site should slow down and reduce the horn blowing;

5) Some components, such as bridges and water storage gates, should be prefabricated in the suitable sites before being transported to the construction site for field assembly.

- Reduction of Man-made Noise

1) The regulations should be followed during machinery operation and disassembling works;

2) Don’t use whistle and bell to conduct the operation as far as possible, but use the modernized equipments.

- Establishment of Temporary Sound Barrier

1) The fixed machineries should be operated in the operation room as far as possible. If not, the single-side sound barrier should be established within 30m away from the sensitive points;

2) Establish good relationship with surrounding units and residents, inform than in advance about the interruptive construction activities, and timely report them the construction progress and the measures taken against noise impacts in order to get their understanding; According to the “Law of the People's Republic of China on Prevention and Control of Noise Pollution”, if the noise is still beyond the regulated limits even with the




mitigation measures, the construction unit should apologize to the impacted organizations or individuals with appropriate compensation;

3) Take the personal protection measures, mainly the personal noise-protective equipments. The construction workers operating the high-noise equipments should be equipped with the noise protective apparatus such as earplug, earphone and noise-protective helmet;

4) Complaint hotline should be established during construction to listen to and actively response to the residents’ complaints on the noise disturbance.

7.1.3 Mitigation Measures against Solid Waste Pollution

- Desilted Sludge from Desilting Projects

The proposed BIEIP covers many desilting projects. There will be large amounts of desilted sludge generated with the project construction. For the disposal of the sludge, the following principles will be followed to minimize the possible environmental impacts:

1) The sludge should be sampled and analyzed at the points selected according to the actual requirements before the comprehensive utilization or disposal. The sludge with the heavy metal contents or other indicators beyond the standard should not be used for directly edible crops;

2) The sludge disposal at the designated receiving sites should be legally approved by the corresponding authorities with the proper management of leachate treatment facilities to ensure the compliant discharge;

3) In view of the limited local landfill capacity, it is suggested that if the sludge quality is compliant with the standard, part of the desilted sludge could be comprehensively utilized, such as road pavement and brick making, so as to reduce the farmland damage caused by soil borrowing and realize the diverse investment to promote the comprehensive river rehabilitation;

4) Try to realize the internal earthwork balance as far as possible, as detailed below.




Table 132: Desilted Sludge Disposal for Desilting Projects

Name of Desilting

Project

Earthwork Quantity

(m3)Proposed Disposal Methods

Longzi Lake 2.20million

Dump at six dump sites selected around the lake

for drying, and then use the dried sludge as the soil

for the surrounding vegetation.

Xijiagou Canal 33300 Dry the sludge at the 8 nearby dump sites.

Baligou Canal 3347 Send the sludge to the sanitation landfill site.

Water feeding ditch

for Wangxiaogou PS

in Huaishang District

165,000

Dump the sludge along both sides of the canals for

drying, then use as the fills for the North Huai River

Dyke to maximize the earthwork balance; The

surface contaminated sludge could be sent for

landfill after drying.

Jie Canal, Wugu

River, Daoban Canal

and flood discharge

canals in Guzhen

County

393,600Send to the Guzhen domestic solid waste landfill

site for disposal.

Hilly ponds in

Huaiyuan County22,600

Part of the desilted sludge can be used as the

fertilizer for vegetation rehabilitation and the fills for

the greenbelts along the roads in the food

processing industry park.

Sanpu Great Ditch

and Mochongyin

River in Wuhe

County

450,600

Firstly stack along both sides of the canals for

natural drying, then the sludge of the surface

contaminated layer is sent to the sanitation landfill

for disposal, and the sludge of the middle and

lower layers could be used as the fills of farmland,

forestation and scenery sites.

- Spoil Soil & Construction Waste

1) Spoil soil and construction waste should be filled at designated sites following the instructions of the municipal and planning authorities; the construction unit should complete the legal procedures for spoil soil discharge before sending the waste for landfill;

2) The wasted sand & stone, construction materials, steel and packing material should be managed and reclaimed by special persons to save the resource. With the construction completion, the construction sites should




be cleaned up in time. It is prohibited to pile up the construction waste on site;

3) The construction waste, such as bricks and tiles, can be disposed by general storage, however, the waste should be finally sent to the appointed dump site;

4) The construction should be completely enclosed to control the pollution and impacts within the construction site;

5) For the transportation, the vehicles should not be over-loaded with the coverage of paulin or vehicle enclosure; the vehicle exterior should be cleaned before leaving the sites, and the shattering along the road should be prevented; the transportation should be arranged away from the sensitive points for rush hours with relevant appropriate mitigation measures to alleviate the traffic pressure for materials transportation and reduce the material leakage;

6) It is prohibited to pile up construction materials as sands and stone around the lakes and rivers, and the dump site should be away from the lakes and rivers as far as possible. The mud scattered on the site and the detour should be cleaned in time in order to prevent the soil solidification and its impacts on the flatness of the site and the road.

- Sewage Sludge from Mohekou WWTP

With alternative analysis, it is proposed in the FSR that the sewage sludge from the Mohekou WWTP will be treated and disposed as follows:

Concentration—Dewatering—Transportation—Bengbu Municipal Sanitation Landfill Site

- Domestic Garbage & Other Solid Waste

1) Establish temporary garbage dumping points in the construction sites to collect the garbage produced by the construction workers and the garbage from the desilting. The collected garbage should be timely transported outwards. And no random dumping is permitted;

2) The portable toilets for the camp should be regularly disinfected and cleaned by the local environmental sanitation department;

3) The rivers and the river banks should be cleared before the implementation of desilting and storm drainage PS projects and the dumped domestic garbage should be transported to the solid waste disposal site. The outfalls for domestic and industrial wastewater should be cleared in case of being blocked; the river courses should be cleaned up




and leveled off after the project completion. No residue is allowed when demolishing the surrounding weirs;

4) The construction machinery and the vehicles should be managed strictly. The oil leakage and random dumping of waste oil is prohibited. The waste oil and the containers belong to the hazardous waste of “waste mineral oil”. If the waste oil is not allowed to be dumped at random, it should be stored with special containers and the qualified units should be entrusted for the disposal.

7.1.4 Mitigation Measures against Soil Erosion

Before the project construction, various emergency plans should be prepared against the soil erosion to maximize the protection and rational utilization of water and soil resources. For the temporary land occupation, the occupation time should be shortened as far as possible, and the occupied land should be timely cleaned up and resumed for the original function. The detailed measures are as follows:

1) Earthworks: Try to maintain the original landform in the construction, minimize the earthwork so as to lower the cost. Avoid the excavation work in the raining season. Control measures should be taken for the exposed ground to minimize the soil erosion. The excavated earth should be cleaned day by day as far as possible. If not, the exacted earth should be standardizedly stacked; try to realize the earthwork balance during construction, and the excavated earth should be used for backfilling as far as possible; the remaining spoil soil from pipeline laying should be timely delivered to other construction sites (e.g. embankment, access roads, etc.) for the use of fills and greening in order to avoid unreasonable landfilling;

2) Dump site construction: Flat sites should be selected for temporary dumping equipped with necessary facilities around, such as flood discharge ditches, flood discharge pipes or retaining walls to reduce the loss of spoil soil;

3) Vegetation rehabilitation and greening: Maintain the original vegetation as far as possible for soil conservation. The area with vegetation required to be destroyed should be well planned, the protection and rehabilitation plan should be prepared for the destroyed vegetation; the vegetation should be rehabilitated as soon as possible with the construction completion; the riverside greening should be strengthened, especially for the dyke projects. The engineering side slope should try to use grouted square turf or turf for protection;




4) Drainage management: The drainage measures should be taken during construction to prevent soil erosion caused by storm;

5) Construction plan: The project construction should be implemented by phase in order to shorten the construction period for single item, especially for the network projects;

6) For embankment projects, during construction, two sides of the dike should be covered by dustproof net, when necessary, side ditch and stagnant pool on riverway are built; reasonable stacking of the earthwork at construction site should be given more attention and keep certain distance with riverway and ditch, in addition, straw bag are piled up all around to prevent the sand from inflowing into the waters and cut down the impact of soil erosion on rivers and drainage ditches; the afforestation should be made immediately after finishing embankment .

7) There is height difference between some roads and surrounding terrain, so retaining wall is established at both sides of the roads to prevent soil erosion caused by rain wash.

8) Due to the reservoir and desilting from flood prevention ditch relating to the construction in Huaiyuan County, the desilted sludge can be used for the slope of flood control ditch and reservoir according to argillaceous features, or delivered to garbage landfill field to fill. The reduction for the time of site storage is to prevent soil erosion caused by rain wash.




7.1.5 Mitigation Measures against Water Pollution

（1 ）When the buildings are under construction, the construction unit should set up sedimentation tank to discharge rain sewage and water pools at construction site produced in the period of construction after all reach the standard through disposal. Piling mud should be sent to designated place by the treatment of sedimentation and drying according to the requirements of urban area management department, and it is prohibited to discharge the piling mud into around farmland or ditches, reservoirs and rivers in case of blockage of drainage channel; at the same time, it is prohibited to discharge the piling mud into municipal pipeline network to block the pipeline.

（2 ）Storage area for construction materials should be away from surface water and set up runoff place where is not easily to be washed; In addition, storage area for powdered materials should be matched with the coverings such as straw bag and paulin and open ditch should be dug around storage area in order to prevent runoff washing.

（3 ）Planting the lawn or installing fixed filter screen for clay can prevent soil erosion caused by the runoff of rainfall.

（ 4 ） The discharge of life sewage from construction site must be uncompromisingly controlled. As for construction process presenting linear distribution just like pipeline, the builders disperse comparatively, so they should try to make use of existing life facilities near construction sites. If there are no sanitary facilities, oil separator tank and septic tank should be set up at construction site for the case of temporary restaurant set up at building site. After life sewage of the builders is pretreated, it is delivered to municipal departments to regularly make spot transportation, and then these life sewage are sent to sewage treatment plant by tank car available for sewage transportation, it is prohibited to discharge at construction site.

（5 ）Construction unit should adopt all necessary measures to prevent sewage without disposal from flowing into rivers and ditches.

（6 ）The management on construction sites should be strengthened, the sites and landfill slope of earthwork keep plat and tidy to reduce the earthwork to enter into riverway near landfill site; The waste at construction sites must be cleaned and transported outside in time.

（7 ） Building materials, such as oil and chemical products, is not suitable to be filled near the rivers and waters and should keep away from rivers with temporary covered paulin to prevent them into water from washing out by gale and rainfall. Environmental management should be reinforced to avoid oil




materials leakage caused by construction machineries or the dumping of oil materials into waters to produce pollution, and it is suggested that the method of vessel-receiving is adopted for oil leakage of the machineries.

（8 ）Desilting Works: construction should be done during dry season in order to avoid the impact caused by riverway flooding; the sludge produced by riverway Desilting should be stored at least 10m away from the shore according to the requirements of works design so as to avoid the sludge flowing into the riverway through runoff; sedimentation tank is put at low lying place of construction sits, and underground infiltration pumped by sinking pump, wasted water from construction operation and life sewage of the constructors are discharged into the waters after being disposed in sedimentation tank. There is foundation trench around sludge landfill field, which connects with sedimentation tank, the remaining water caused by sludge landfill are discharged into the river at downstream for avoiding flowing into riverway or the impact on water quality and environmental sanitary at construction sits led by wanton discharge .

（9 ）Flood Prevention Control for Tianhe: Construction should be done during dry season, and the construction period should be reduced in order to avoid the impact caused by riverway flooding. At construction sits of Tianhe PS, sedimentation tank is put at low lying place, and operating waste water of the construction, such as water building pit infiltration pumped by sinking pump, waste mud water, waste water contained oil, should be given priority to be reused at construction site after being disposed through sedimentation tank and grease trap, these disposed water are adopted as operating water and sprinkling to control dust in order to reduce discharge volume of waste water. The construction waste water and life sewage must reach Class I Standard before being discharged into the Huai River. Side ditch for drainage must be set there when perimeter irrigation station and fishing ground of the Tianhe Lake are reconstructed, and sedimentation tank is put at low lying place away from the Tianhe Lake, after being disposed through oil separator sedimentation tank, waste water caused by construction should meet water operation requirements specified in “Standard for Irrigation Water Quality” and is discharged into the ditches of perimeter farmland, and it is prohibited to discharge those waste water into the Tianhe Lake directly. Desilting and excavating works for the bed need to done when reconstructing PS and fishing ground, the cleaned out sludge should be stored away from the shores in case of sludge and rainfall in storage filed flowing into the rivers; drainage ditches are set around the area for piling the mud, and project engineering wastewater is disposed at sedimentation tank that is set up at low lying place and flows into peripheral ditches in order to avoid engineering wastewater flow into the Tianhe Lake or the Huai River or directly into farmland soil.




（10 ）Water Environment Protection Measures for the Longzi Lake①In order to guarantee that desilting project engineering wastewater of the Longzi Lake reaches the standard, environmental monitoring plan regulated as per this report must be followed strictly, engineering wastewater quality are monitored at discharge outlet of sedimentation tank. Once it is found that water quality is over standard, engineering measures should be adopted to adjust the amount of medicine and increase staying time of engineering wastewater in order to ensure effluent water quality.

②In order to avoid occurrence of leakage accidents on mud Conveyance Pipe in the process of transporting sediment to storage filed after desilting and excavating, several aspects should be controlled strictly, such as the selection of pipe materials, pipe installation g and so on. In the process of pipeline operation, daily maintenance and visitatorial inspection should be strengthen in order to find and handle possible leakage accidents and avoid the impact of pipeline breakage or mud leakage on water quality of Longzi Lake.

③In order to guarantee that there is no appreciable adverse effect on water quality of the Longzi Lake caused by landfill wastewater, during its initial engineering period, settling time should be assured not less than 48 hours, and in the latter period, Medicine Adding Settlement Promoting Method is adopted to guarantee that engineering wastewater reach the standard for discharge.

④During the period of hydraulic fill at storage field, special person is responsible for visitatorial inspection to low reclamation dam in order to find and handle possible leakage accidents caused by collapse and avoid the sludge flowing out into the waters or farmland Leading to secondary pollution.

⑤ Distinct warning sign should be put around storage field for avoiding man made breakage on low reclamation dam or occurrence of the dangers caused by the strangers entering into the storage field by mistake.

⑥There is a small life sewage integrated treatment facility at construction site of the Longzi Lake Flood Prevention PS, life sewage of the constructors reaches Class I Standard of Integrated Wastewater Discharge Standard after being disposed and then are discharged into the Longzi Lake. As for construction site of desilting engineering, life sewage produced by the constructors is little, and it is allowed not to build sedimentation tank, life sewage is discharged into storage sedimentation tank, and it mixes with dreading wastewater and then they are discharged together after being disposed.

⑦There is a sedimentation tank at construction site of the Longzi Lake Flood Prevention PS, after underground water at construction site is pumped into sedimentation tank, and then that water will be discharged into the Huai River




through sedimentation, in addition, operation wastewater under construction is also discharged into the Huai River through sedimentation.

⑧After finishing desilting engineering for Lake Bottom and dismantling construction cofferdam of the Longzi Lake Flood Prevention PS, construction site for lake bottom should be cleaned immediately, building garbage are controlled strictly to leave at lake bottom, because those left garbage will impact water quality of the Longzi Lake and sedimental environment.

7.1.6 Mitigation Measures for Social Environmental Impacts

（1 ）All kinds of preparation should be made prior to construction; the contents relating to the works are investigated and understood in detail, and the preparation for emergency works should be done well cooperating with relevant authorities in advance to ensure normal state of social life.

（2 ）In order to cut down the impact on urban residents life and transportation caused by engineering construction into minimum degree, during construction period, the driving routes for the vehicle should be determined according to uniform traffic diversion plan in order to prevent traffic jam; a notice to reassure the public is made by making use of broadcast, TV, newspaper and magazine.

（ 3 ） A notice is put at construction site, it includes main contents of engineering, construction time, public acceptance for inconvenience brought by construction and states connect person as well as complaint hotlines, etc.

（4 ）Transportation for building materials and waste earthwork should avoid the rush hours or driving at night to reduce traffic jam and the impact on resident trip.

（5 ）Pipeline and river desilting engineering should adopt section construction, meanwhile, excavation and backfilling should be finished as soon as possible. Temporary pavement should be set, especially when the construction is carried out near public installations such as hospital, school and station, in addition, traffic warning signs are matched, and traffic polices disperse and dispatch the vehicle on the rush hours in order to ensure the smooth of pedestrian and vehicle; transportation for the materials should try to avoid rush hours so as to relief urban traffic flow pressure; when the pipelines cross through arterial road, priority will be given to pipe jacking construction for reducing the impact on transportation to a great extent.

（ 6 ） In order to guarantee traffic smooth for the residents, clearance and transportation for industrial garage clean out of pipe network and road construction should be done immediately.




（7 ） Low noise equipments are used for the project which must operated at night, and hanging height and direction of the construction lamps should not impact the residents’ rest at night.

（8 ）Emergency preparation should be done in advance by relevant authorities for the occurrence of the problems impacting residential water supply and discharge during construction period,

（ 9 ） According to relevant national and local resettlement policies and compensation for removal due to land expropriation, reasonable compensation and resettlement work should be made for the villagers whose lands are expropriated and houses are removed. At the same time, immigration comments should be appreciated to ensure their working and life conditions not less than current level and dwelling space is improved, in addition, residential area has complete matched public installations as school, hospital, nurseries and kindergartens, shop and transportation.

（10 ）Administrative staff and the constructors should be further cultivated on the education and awareness for cultural relic protection. During the period of construction, once the existence of cultural relics and historic sites had been discovered, administrative staff and the constructors shall notify Cultural Relic Protection Authority in time, and then construction will go on only after those cultural relics are properly disposed.

（11 ）After the Tianhe Lake’s fishing ground is demolished, its development and construction should be done according to protection program for the Tianhe Lake water source, at the same time, construction plan shall obtain the comment of relevant authorities on land, planning, water resources and environment protection. Development areas and land development intensity should be controlled.

（12 ）The breadth of the roads to be built is controlled to save land occupancy, and the reduction of vehicle flowrate and traffic pressure are favorable for cutting down loss degree on road bed and surface and reducing pollution from vehicle exhaust.

（13 ）Adverse impact on traffic will be reduced by speeding up schedule and cutting construction period.

7.1.7 Mitigation Measures for Ecological Impacts

Instantaneous changes will be brought to existing ecological landscape during the period of construction, therefore construction should be done in section and area in order to appropriately protect ecological landscape environment along the line. The following points should be paid more attention during construction:




（ 1 ） Operating area for construction must be controlled strictly, and propaganda and education work on environment protection awareness should be enhanced for the constructors. During construction period, those deeply-excavated and high-filled road sections will destroy terrain, physiognomy, vegetation and occupy the land, and it also leads to surface exposure and alters soil structure to change ecologic structure and the function of the areas along the line, finally, the stability of ecologic system will be affected. Therefore, propaganda and education work on environment protection awareness should be enhanced for the constructors, and the constructors are forbidden to destroy the plant out of designed land.

（ 2 ） The construction process for roads and pipe net work should be done according to construction stage and area, and protection measures are adopted for the exposed area left by excavation, therefore, the exposure period should be cut down to protect surface layer and the plants. As for the flowers and trees planted, in the middle and both sides of construction section, transplantation and protection work need to be done well, and is it not necessary to replant all damaged plants, but temporary transplantation. Temporary storage and protection should be made after separating the soil layer with fertility on the land surface, reclamation green measures should be adopted after completing the construction. Engineering supervisory personnel are required to strengthen the supervision on such work, therefore, such operation is one of important factors for biological diversity within the land for construction use and improving survival rate of the plants and grass within the scope of project afforestation.

（ 3 ） The afforestation function to prevent soil erosion should be fully considered, under possible circumstance, afforestation should be made matching with factory green plan when one section is finished so as to reach the purpose of reducing soil erosion; turf side slope protection is a kind of engineering measures to create artificial phytocoenosis for temporary use to make the slope covered the plants quickly, the selected turf is the plant with the features of strong purifying ability, adversity resistance, easy control, high value for comprehensive use and landscape beautification available, at the same time, survival rate for the plants and good purifying effect should be guaranteed.

（4 ）The areas that need to be removed should be constructed with order in section so as to avoid landscape confusion along the line to disturb landscape appreciation, at the same time, the shield (wood, glass, and sheet iron, etc.) can be set up as surrounding barrier to reduce landscape pollution. During the process of construction, more attention should be given to the plants such as trees and green space in adjacent area.

（5 ）After reasonable distribution for cuts and fills is made well, piling point for wasted soil should take protective measures to avoid cutting and filling in raining




period and prevent soil erosion, water pollution and blockage of drainage pipe caused by rain wash. Meanwhile, balancing of cuts and fill should try to be made better, and the excavated earthwork is used as backfilling soil for leveling off construction site; the rest wasted soil produced by construction after backfilling should be sent to filling and earth-moving area of north side of the Huaibei Embankment to make earthwork balance.

（6 ）On the premise of meeting the requirements of engineering construction, flat place should be selected as temporary piling site and floor area should be save as possible, at the same time, construction schedule should be arranged reasonably. After the completion of the works, construction unit must clear construction sits in time and withdraw occupying sites, in addition, those destroyed plants should be replanted as possible to recover original ecology.

（7 ）As for temporary occupied land in engineering construction, reclamation measures should be positively adopted after finishing the construction in order to recover agricultural production as soon as possible.

（8 ）After the construction in piling site, which occupies flood land, is finished, grass seed should be sowed in time for afforestation in order to prevent dust caused by sludge drying and soil erosion in raining season.

（9 ）Desilting depth should be controlled strictly for avoiding serious impact against benthic biota and root system of submerged plant in bottom sludge.

（10 ）When bottom land training is done during reconstructing the Tianhe Lake fishing ground, desilting and excavating areas and acreage should be controlled strictly in order to cut down the impact and interference on ecological environment of the Tianhe Lake fishing ground.

（11 ）Ecological supervising works are assumed jointly by Project Supervisory Authority and environmental protection personnel of Construction Authority, and visitatorial inspection is adopted to check the implementing conditions of ecological protection measures.

7.1.8 Mitigation Measures for Other Impacts during Construction

(1) During construction process, construction unit should try to make concurrent construction for those areas, where the roads and pipe networks all need to be done, in this way, roads destruction caused by the construction of pipe network can be avoided, which not only can Pb to repeated construction, but produce pollution of noise, atmosphere and water against surrounding environments and bring ecological impact such as soil erosion and vegetation destruction.




(2) After entering into working area, the constructors regularly choose the pesticide to kill the pests such as mosquito and fly and adopt rattrap or poison bait to kill the rats in living area.

(3) Construction Management Authority should strengthen monitoring epidemic disease, make regular medical observation for the constructors and strictly follow the system of reporting epidemic diseases. Especially, the kitchen in construction site should have a complete medical examination and accept training on sanitary and anti-epidemic knowledge. In addition, prevention and treatment knowledge for frequency encountered diseases and usual illness (such as epidemic hemorrhagic fever, hepatitis and food poisoning) should be widely propagated in order to enhance group’s awareness on preventing and resisting the diseases.

（4 ）Shall protect water source and get rid of pollution, and regular examination is made on drinking water quality and migrant workers’ food in order to cut down any possible way to pollute drinking water.

7.2 Mitigation Measures during Operation Period

7.2.1 Mitigation Measures for Air Pollution

7.2.1.1 Mitigation Measures for Vehicle Exhaust Gas

（1 ）Clean fuel (LPG)is widely popularized to reduce discharge volume of CO, THC and NO2 in vehicle exhaust. And the installation of exhaust purifier can reduce 70 ％ of CO and 50% of NO2 in vehicle exhaust.

（ 2 ）Afforestation of both side should be strengthened, the trees and grass available for absorbing pollutants in vehicle exhaust, such as arbor and frutex, are selected to be planted and their function in dust suction, noise reduction and environment beatification are given full play so as to control the spread of vehicle exhaust to surrounding environment, at the same time, the maintenance of afforestation is made well.

（3 ）Shall strengthen monitoring on vehicle exhaust, and the automobile on the road is monitored in strict accordance with standard, those which can’t meet standard are not allowed to drive on the road in order to control discharge source

（4 ）Shall strengthen management on the automobile to reduce vehicle idling mode and cut down the discharge of pollutants in exhaust.

（ 5 ） Shall strengthen daily repair and maintenance to keep good state and reduce discharge volume of pollutants in exhaust.




（6 ）The vehicle, the exhaust of which is over standard, should be eliminated in time.

（7 ）Further improvement should be made on passing conditions on crossing roads, and traffic signal cycle of city sections should be set up reasonably to improve passing rate of the vehicle, reduce the phenomena of traffic jam and abate pollutants in exhaust.

（8 ）The vehicles, which deliver the materials containing the dust, should use paulin to cover the goods, and the shatter of materials should be strictly controlled.

7.2.1.2 Mitigation Measures for Odor Impacts by the WWTP

（1 ）Sanitary prevention and protection distance are set up in strict accordance with regulations, at the same time, shall guarantee that factory and surrounding living areas don’t suffered the impact of odor gas.

（2 ）Factory afforestation should be improved and green isolation belt is set up.

（ 3 ） Strict management should be made on storage, transportation and disposal process for the sludge.

（ 4 ） Accidents Emergency Response System is established to prevent risk accidents.

7.2.2 Mitigation Measures for Noise Impacts

7.2.2.1 Mitigation Measures for Storm Drainage PSs

（ 1 ） High-quality low noise PS and air compressor are preferred in Flood Prevention Station; inlet & outlet pipeline’s size for the pump should be suitable and matching; acoustic enclosure should be set up out of air compressor, and sound insulation is realized by its internal acoustic material; flexible and elastic connection are made for inlet & outlet connecting pipeline of the pump, and pipeline support of the pump can be used as elastic bearing and pump assembly is treated as vibration insulation, such as metallic spring and robber absorber, to make shock absorbing treatment.

（2 ）Two storied gate and window are required to be set up in equipment room of Flood Prevention Station, and there is a greenbelt with mixed trees of arbor and frutex around PS in order to play a role in sound insulation and noise reduction against operating noise caused by Flood Prevention Station.

7.2.2.2 Mitigation Measures for Traffic Noise




（1 ）The frequency for tracking monitoring on sensitive points near the section is one time after middle term of operating period, if the monitoring results show that the noise is over standard due to the increase of traffic volume, relocation measures should be adopted in time. It is suggested that resettlement for relocated residents be responsible for construction unit.

（2 ）According to scientific data, sound planning and scientific layout, Planning Authority, Environmental Protection Administration and Transport Authority cooperate wholeheartedly to do a good job on urban planning and avoid occurrence of new noise sensitive point. In order to reduce possible impact led by traffic noise, it is suggested that the authority in charge should notify relevant streets, governments and Village Committee at different levels along the line in an official documents not to plan and construct school, hospital and residential area near both sides of the roads. If it must be construction within the coverage of influence, under such cases, building owners are responsible for taking measures to prevent traffic noise at their peril.

（3 ）Construction quality should be controlled strictly in order to guarantee that there are no problems as sinking, crack and roughness occurred on pavement during operating period to increase driving noises.

（4 ）Under permitted conditions, it is suggested that pavement should adopt low noise pavement, which is made of Porosity Porous Asphalt Mixture Surface, and the noise can be made reduction of 3-6 dB(A) by comparing with traditional dense aggregate pavement.

（ 5 ） Shall strengthen the management on the vehicles. In the front of the hospital and kindergarten, the vehicles need to slow down and are forbidden to make tooting.

（6 ）The trees and evergreen ornamental arbor try to planted at both sides of reconstructed and newly built road, and the grass is planted the slope of the bridge, which not only can play a role of reducing the noise, but to improve urban environment and beautify road landscape.

7.2.2.3 Mitigation Measures for Noise Impacts from the WWTP

Main noise sources of sewage treatment works are the equipment noises produced by Sewage Treatment Plant and Sewage Lifting Pump Station, including mechanical equipments such as sewage pump, blower, and the measures for preventing and controlling noises are adopted as follows:

（1 ）Low noise blowers, sewage pumps and the others are selected.

（2 ）Impedance complex muffler is set up at air inlet and outlet of the blowers.

（3 ）Sound insulation room is adopted for the treatment for noise reduction,




（4 ）As for aeration tank, the measures, such as vibration-absorption, sound insulation and underground tunnel blast, are adopted for blower house.

（5 ）Center control monitoring room is set up in blower house control, and it is not necessary for the operators to work in blower house.

7.2.2.4 Mitigation Measures for Noise Impacts from the WTP

Main noises of Water Treatment Plant under operation period are: blower and water pump. The noises caused by the operation of these equipments is between 80~90 decibels, and it is able to meet the requirements of Standard of Noise at Boundary of Industrial Enterprises GB12348-90 (Class III) through sound insulation and reduction. Relevant noise control and Prevention & Control Measures should be adopted in order to cut down noise impact under operation period.

（1 ）Low noise equipments should be chosen as possible, as for the equipments with higher noise ( （≥ 75dB(A) ） , the measures as protective mask and insulation wall are adopted to reduce noise. All equipments adopt flexible connection and vibration insulation treatment should be made well as possible to reduce the noise caused by indoor equipment operation.

（2 ）The workers, who are working at noise environment for a long time, should be equipped with ear protector, and regular examination on their listening is made.

（ 3 ） Shall strengthen equipments maintenance and management to ensure them normal operation and avoid noise pollution caused by abnormal operation.

（4 ）Shall strengthen afforestation at open space, especially for blower house and around pump house. Open space around buildings is fully made use of, where flowers are planted, and the parterres as well as greenbelts are built, in this way, a green system consists of parterre, greenbelt and avenue tree.

7.2.3 Mitigation Measures for Solid Wastes Impacts

7.2.3.1 Mitigation Measures for Solid Waste Impacts by Storm Drainage PSs

（ 1 ） Life sewage of the management at Flood Prevention PS should be collectively stored and delivered to Environmental Sanitation Authority to transport outside for disposal.

（ 2 ）Gate residue produced by inlet gate of Flood Prevention PS should be collected at designated points, after being drained, these gate residues are




delivered to Environmental Sanitation Authority to transport outside for disposal, and it is not allowed to be stored near or around Flood Prevention PS.

7.2.3.2 Mitigation Measures for the Sludge from the WWTP

（1 ）Sludge bulkingSludge bulking is one of more difficult problems to be solved met by Sewage Treatment Plant, and it mainly occurs at secondary sedimentation tank. Sludge bulking refers to destruct the macrostructure of sludge floc caused by overgrowth of filiform microorganism, and filamentous substances disturb the compress and Sedimentation to Pb to sludge bulking on volume. In the process of sewage treatment, if the influent concentration of the sewage is very high or aeration time is short, the activated sludge process is possible to overload. The features of the sludge deterioration are having putrid flavor, presenting ascending trends of activated sludge in secondary sedimentation tank and forming foam or appearing filamentous microorganism. For miscible liquid is not easy to separated, so it will impact sewage treatment.

The main measures for solving sludge bulking are as follows:

① Reduce reflux quantity of the sludge to remove more surplus sludge and promote the formation of fresh sludge in aeration tank;

② Increase air supply;

③ Make a part of sewage after sedimentation for side stream in order to reduce load;

④ Increase chlorine in return sludge;

⑤ Add hydrogen peroxide instead of chlorine;

⑥ Add nutriments in case of the content of nitrogen and phosphorus deficiency;

⑦ Adopt step aeration as operating mode;

⑧ Add the flocculants as ferric trichloride into secondary sedimentation tank;

⑨ Stop temporarily to discharge digestion tank liquor to aeration tank;

（2 ）Sludge Thickening and DehydrationCo-treatment for Primary and secondary sludge in different stages has its own advantages and disadvantages, sludge fermentation is easy to be aroused at the time of sludge thickening, but sludge fermentation has the problems on hard compression and turbidity of supernatant liquor; and it is easy for the dehydration of secondary sludge at the time of dehydration. In order to prevent sludge fermentation at the time of sludge thickening, the method of adding coagulant aid can be adopted to improve stability of the sludge.




（3 ）Sludge, Gate residue and Sinking Slag Landfill All produced sludge, gate residue and sinking slag are delivered to garbage landfill site for sanitary landfill, and the accessing conditions for them are as follows:

① Require packing or container transportation for sludge, gate residue and sinking slag in order to produce secondary pollution on route;

② Transport implemented according to regulate time and running route

After sludge, gate residue and sinking slag have entered into sanitary landfill, the following points should be made in the process of landfill:

① To cover the sludge with the soil day by day to prevent the production of odor and other environmental hazard;

② To adopt mixing landfill for sludge and garbage favorable for anaerobic decomposition of the garbage.

（4 ）Shall regularly monitor the soil of sludge piling site and underground water, and stop continuing to do landfill and use in case of funding pollution problems and then remedial measures are adopted to prevent expansion or transfer of the pollution.

（ 5 ） Secondary pollution problems, such as air pollution and underground, should be prevented in the process of piling up and transporting the sludge. Protected special transporter is adopted for sludge transportation; meanwhile, the time of sludge transportation should be controlled strictly in order to avoid peak hours.

（6 ）Regular monitoring should be made on sewage treatment plant in order to prevent secondary pollution produced by heavy metal in the sludge; and garbage landfill site should be notified immediately if it is found that the heavy metal in the sludge is over standard. Sludge and life sewage are filled separately and strict watertight measures should be done well. In addition, sediment leachate is delivered to sewage treatment plant for disposal, and then it is discharged after reaching the standard.

7.2.3.3 Mitigation Measures for solid waste from the WWTP

（ 1 ） The sludge in Water Treatment Plant contains organic materials and various microelement as Ca 、Mg 、 Fe, which not only can be used as the nutrients for plant growth to improve soil fertility and microbial activity of the soil so as to promote crop growth, but also solve the problem of final treatment on the sludge and use it into resource to create certain economic performance.




（2 ）Packing materials used for life sewage and medicine should be managed separately and placed at special places in order to prevent cross contamination, and then Environmental Sanitation Authority and medicine suppliers are responsible for disposing them separately.

7.2.3.4 Mitigation Measures for Solid Wastes from Civil Works

（1 ）Shall strengthen monitoring work on pollution treatment of solid wastes along the roads, relevant contents are compiled into Road Vehicles Operating Rules and Road Maintenance Rules and implemented subject to supervision of local Environmental Sanitary Authority.

7.2.4 Mitigation Measures for Water Pollution Impacts

7.2.4.1 Mitigation Measures for Water Pollution by Road and Bridge Projects

The protective barrier for the section, where has canal bridge, should be reinforced, and warning sign for dangerous goods vehicle should be set up.

7.2.4.2 Mitigation Measures for Water Pollution by the Urban Network Project

（ 1 ） Municipal Infrastructure Authority strictly matches the construction of drainage branch on enclosure area and discharges life sewage along the areas into closure pipeline.

（2 ）Environmental Protection Authority in charge urges the company to make standardized construction on pollution discharge outlet, but the companied within the area of drainage works service are prohibited to discharge the pollution to surface waters.

（3 ）It is prohibited to dump the garbage to urban surface channel and culvert, and garbage is not allowed to dump into the waters to worsen pollution or block drainage channel.

（ 4 ） Shall strengthen the monitoring on water pollution, and regular water quality monitoring should be made for key waters, if the problems are found, please handle them immediately

（5 ）Shall speed up the construction of Sewage Treatment Plant to guarantee the validity of urban pipe network.

7.2.4.3 Mitigation Measures for Water Pollution of Desilting Projects




（1 ）Shall strengthen the management along the ditches, and life sewage is prohibited to wantonly pile up so as to avoid the leachate of life sewage flowing into riverway to influence water environment on surface waters.

（2 ）Pollution discharge outlets, which are privately set up by the companies along the line and the residents, are strictly controlled. At the same time, untreated life sewage and industrial waste water are also controlled strictly to be discharged into riverway.

7.2.4.4 Mitigation Measures for Water Pollution Impacts by Mohekou WWTP

（1 ）The companies with heavy pollution are reformed on the spot, and shutout, stop, merge, transform or move are carried out for those companies, which don’t meet the requirements.

（2 ）The inflowing water quality to Sewage Treatment Plant must be controlled in order to guarantee normal operation of each Sewage Treatment Plant and make effluent quality meet national regulations on waste water discharge standard.

（3 ）As for the wastewater, which is discharged by the companies with great polluting load, must be first pretreated in factory, and accidents reservoir should be built to avoid producing high load shock to Sewage Treatment Plant so as to impact treatment efficiency and effluent water quality.

（4 ） The measures for preventing the occurrence of risk accidents can be considered from the design and management, and then feasible precautions and measures for accidents can be proposed and Accidents Emergency Response System is established.

（ 5 ） Shall strengthen the monitoring on water pollution, including the monitoring on inflowing and effluent water quality, the Huai River water quality of discharge outlet downstream, sludge storage and groundwater environment in treatment & disposal area, etc.

（6 ）Shall establish running management and operating responsibility system; and then staff training should be made well, in addition, technical examination file is set up, under such system, those who can’t pass technical examination are not allowed to hold a post.

（7 ）Under occurrence of the accidents, shall guarantee the normal operation of grillage and grit channel so as to make certain reduction of SS and COD in inflowing water; meanwhile, the reasons cab be found out from main pollution source of water collecting system, and relevant factories will adopt corresponding emergency measures to control discharge volume of microbial




hazardous substances; if there is irresistible external cause, the conditions, such as dual –circuit power failure, unexpected natural disaster, will Pb to the sewage to be discharged outside before being disposed, under such circumstance, source enterprise, in whole or in part, stops to discharge sewage to pipeline in order to make sure of safety waters function.

7.2.4.5 Mitigation Measures for Water Pollution by Mohekou WTP

（ 1 ） If waste liquid is able to meet the requirements of Sewage Discharge Standard of Class III after accepting physical and chemical examination made by the Lab of Water Treatment Plant, it can be directly discharged into municipal sewage pipe network.

（ 2 ） Life sewage in the period of operation meets Class III of Integrated Wastewater discharge Standard （GB 8978-1996 ） after being disposed by treatment facilitates such as anaerobic tank, and then the disposed sewage inflow into urban sewage pipe network.

7.2.4.6 Mitigation Measures for Urban Water Source Protection

The Tianhe Lake as emergency water source place of urban water supply of Bengbu City, protection should be made for the Tianhe Lake Flood Prevention Station when it is built and put into operation.

（1 ） Life sewage produced by the staff of the Tianhe Lake Flood Prevention Station flows into complete sewage treatment facilities after being disposed in anaerobic tank within living management area and then reaches the standard.

（2 ）It is suggested that a part of waste water will be reused to the factory as the water for afforestation and road washing after carrying out life sewage treatment of Class II, in this way, the discharge of sewage and net water use are reduced.

（ 3 ） It is suggested to set up sewage collection pipe network in living management area, and the network connects with sewage treatment station. Waste water produced by washing the road still can be discharged into sewage treatment system to realize sewage zero-drainage.

（ 4 ） The sewage to discharge outside must reach Class I of “Integrated Wastewater Discharge Standard”, and then lower culvert of the Tianhe Lake Gate is discharged into the Huai River, any waste water is prohibited, including water discharged into the Tianhe Lake by runoff erosion

（5 ）The quality for pipeline construction should be controlled strictly so as to avoid sewage leakage or overflowing into the waters such as the Tianhe Lake,




the Huai River caused by damage of sewage pipeline and the occurrence of pollution accidents.

7.2.5 Mitigation Measures for Ecological Environment Impacts

（1 ）On the one hand, the tress within engineering construction scope will be transplanted; on the other hand, engineering construction will destroy surface vegetation within this scope and bring adverse impact on regional ecological environment. In the period of construction, original surface vegetation is destroyed by temporary project, but it will be restored after adopting some recovery measures.

（2 ）The maintenance for road engineering and river training works should be made well, and it is prohibited to discharge hazardous substances into riverway along with drainage.

（ 3 ） In the latter period of the construction and initial operating period, according to landscape design, landscape engineering will be done by implementing afforestation to the section available within the scope of land expropriation, where engineering construction will be done.

（4 ）At both sides of the roads, those ornamental trees and shrubs, which have strong ability of resisting pollution and absorbing hazardous gas, have the function of sound elimination and dust control and possess certain visual value, are planted, in addition, those planted trees should be suitable for this area, and the mixture of arbor and frutex are planted. Dwarfing trees are planted densely at both sides of the roads, which form ornamental tree wall and is made of sound proof tree wall.

（5 ）The road waste water not only has higher suspended matters, but contains other pollutants as petroleum; Therefore, the waste water is not allowed to be discharged into farmland soil and waters. Side ditch for drainage should be set up at roadside to collect storm water runoff and make road waste water flow into low lying land, after sedimentation, these waste-water spill into surrounding farmland and ditches to reduce the soil erosion area and the degree for both sides of the roads against pavement rainfall and cut down the volume of water and soil loss.

（ 6 ） Extensive aquatic plants are cultivated and planted around the Tianhe Lake of rivage area, which connect with territory vegetation. In this way, diversified and abundant ecosystem is formed, which is able to cut down polluting impact caused by territory pollution source.




（7 ） After PS is finished, afforestation should be made as soon as possible around the factory, at both sides of the road and empty space in order to realize the restoration of the vegetation, in addition, the slope is stable, and then the rock and surface soil are not exposed.

（8 ）After ditch desilting engineering is finished, biological diversity in the ditch can be improved through artificially planting some aquatic plants and adding the aquatic animals as fish fry.

（9 ）Environmental sanitary management on dike should be done well and it is prohibited to dump the garbage. In addition, Environmental Sanitation Authority should enhance supervision and visitatorial inspection.




8 Alternative Analysis

8.1 Zero-project Analysis

The zero-project analysis for the eight sub-projects is shown in the following tables.

Option A: With the proposed flood control and ecological environment improvement projects;

Option B: Without the proposed flood control and ecological environment improvement projects (Zero-project option)

Table 133: Zero-project Analysis for Tianhe Flood Control Project

Option A Option B (Zero-project Option)

Advanta

ges

1. Improve the flood control criteria

and reduce the floods; promote the

economic development by

environmental improvement; The

project implementation, for the

1:20year event, will reduce the

flooded area around Tianhe by

15,000mu and the flooded villages

by 35 so as to effectively protect

the local economic benefits;

2. Raise the water level of Tianhe

Lake, increase the storage

capacity, and ensure the

agricultural water use and the

emergency drinking water source

for Bengbu.




Disadva

ntages

1. RMB65.2 million investment;

2. Temporary land occupation about

1.5 mu, and permanent land

occupation about 20.33mu,

demolishing of the existing

buildings is required;

3. The construction will cause the

temporary adverse impacts on the

surrounding water, air and acoustic

environments, as well as the

farmland soil.

1. Frequent floods during the flood

season and large area will be

flooded affecting the production

and lives of the local farmers and

restricting the developments of

agriculture economy and

aquaculture. The flooding of

lakeside agricultural irrigation PSs

will result in certain economic loss;

2. The water level lowers in dry

season, and the storage capacity

is also reduced. There is conflict

between the urban drinking water

and the agricultural irrigation water,

while the self-purification capacity

of the lake is weakened, and the

water quality is endangered.

Table 134: Zero-option Analysis for Longzi Lake Flood Control and Environment Improvement Project


Advantages

1. Increase the storage capacity,

improve the water storage

capacity, reduce the economic

loss which caused by the floods.

2. Improve the flood control safety;

lower the extent and scope of the

flood losses.

1. No investment and land

acquisition.

2. Avoid the adverse environmental

impacts during the construction

period.




Disadvantag

es

1. Invest 67.6 million RMB on the

Longzi Lake drainage station;

2. Occupy about 847 mu of the

farmland, beaches and ponds.

3. Produce certain adverse impacts

to the water, air, sound, and

ecological environment.

1. A serious situation of water

bodies, the water storage

capacity is significantly reduced,

poor capacity to regulate in the

flood season; the surrounding

area may have the waterlogging.

2. Bottom land and without drainage

facilities, affected by amplitude of

setup of the Huai River’s high-

water level, the overflowing water

can not be discharged, and the

economic losses at the

surrounding areas is very

serious.




Table 135 : Zero-project Analysis for Urban (South of Huai River) Environmental Infrastructure

Improvement Project


Advantages

1. Improve the urban infrastructure and

the overall level of the urban areas,

promote the economic development

and enhance the investment capacity;

2. Improve the sewerage collection rate

of the city; improve the regional water

environment and the ecological

environment.

3. Enhance the capacity of drainage

pump station, improve the ability of

urban drainage and flood control of

the security safeguard in flood season.

4. Comply with the overall planning of

Bengbu City, and it is one of the

important measures of water pollution

control.

5. The majority of public support this

project and the construction of the

project meets the public demands.

1. Without construction investment costs

2. Avoid the various negative

environmental impacts which caused

during the construction period of

Proposal A.

3. Avoid the interference to the residents

along the project.

Disadvantage

s

1. Produce the dust, foul smell, sewage,

noise, solid waste etc. pollutions

during the construction period, destroy

the vegetation, cause the soil erosion,

increase the temporary traffic

pressure, and damage the landscape

of construction site.

2. Produce the noise during the

operation period of pump station;

affect the environmentally sensitive

points within the short distances.

1. The urban infrastructure construction

level is below the demand of

economic development.

2. Low sewage treatment rate, which is

far below the national environmental

protection requirements, further

hamper the economic development of

the cities seriously.

3. Urban flood control level is not in line

with the planning requirements.




Table 136 : Zero-option Analysis for Xijiagou & Baligou Environment Improvement Project


Advantages

1. Improve the flood control standards

and increase the drainage capacity,

reduce the flood losses; Improve the

environment, then Pb the economic

development.

2. Increase 690 mu (Chinese acre) of

available land through the transform

of Baligou bottom land, with the

significant economic benefits.

3. Remove the sludge and foul smell

pollution of the ditches, improve the

water quality and reduce the

pollution to the Huai River.

4. Demolish the illegal buildings and

beautify the city landscapes.

Disadvanta

ges

1. Need to invest RMB78 million.

2. Need temporary covering area of

about 660 mu, with the permanent

covering area of about 626 mu.

3. Need to demolish the buildings.

4. Increase the waste water, dust,

noise etc. adverse environmental

impacts during the construction

period at the site.

5. The construction causes the short-

term traffic impact.

1. Bad current environmental condition,

serious pollution of the garbage and

the foul smell, the illegal buildings

and waste dumps affect the urban

landscape seriously.

2. Poor capacity of storm water

drainage, serious flood-submerged

situations in the surrounding regions,

which reduce the farmers’ income

and living conditions.

3. Weak natural landscape and the

infrastructure, which affect the

investment works seriously.




Table 137 : Zero-project Analysis for Huaishang District flood control and Urban Environmental

Infrastructure Improvement Project


Advantages

1. Improve the flood control standards

and reduce the impacts of flood

disasters, promote the regional

economic development and improve

people's living conditions.

2. Increase the coverage of plants of the

surface, reduce the soil erosion, which

are beneficial to improve the

surrounding ecological environment;

beautify and enhance the overall

image of the city.

1. Avoid the relocation of the

residents in the construction

site; maintain their current

living sate and land-using

state.

2. Avoid the adverse impacts on

the environment during the

construction and operation

periods.

Disadvantage

s

1. Cause temporary adverse impacts on

the surrounding sound environment,

atmospheric condition and so on,

destroy the vegetation, cause the soil

erosion; Increase the traffic pressure of

the surrounding areas temporarily, and

damage the landscapes on

construction site;

2. The road works will permanent occupy

some land, and change the land using

patterns; Generate the traffic noise

pollution and automobile exhaust

pollution during the operation.

1. The problem is at the

construction site, where the

downstream water of Beifei

River can not drainage due to

the amplitude of setup of the

Huai River and the

Huaihongxin River’s high-

water level, so it is very

vulnerable to have the

waterlogging disasters;

2. The current state of water

conservancy construction and

infrastructure of the

construction site can not

meet the requirements of

regional development, nor the

overall planning objectives,

which restrict the urban

economic development

extremely.




Table 138 : Zero-project Analysis for Guzhen County Integrated Environment Improvement

Project


Advanta

ges

1. Improve the water quality and city

ecological and landscape environment of

the Sanba River, improve the people's

quality of the living environment, thus to

promote the sustainable development of

Guzhen county;

2. Improve the concentrated sewage

treatment rate of Guzhen, building the

foundation for the normal operation of the

sewage treatment plant in the later period;

3. Increase the construction of

infrastructure and improve the investment

environment.

Avoid the various negative environmental

impacts which caused during the

construction and operation periods of

Proposal A.

Disadvan

tages

1. Cause temporary adverse impacts

on the surrounding atmospheric,

water and noise environments.

2. Destroy the vegetation, cause the

soil erosion, increase the temporary

traffic pressure and destroy the

landscapes on construction site;

3. Produce the noise during the

operation period of pump station;

affect the environmentally sensitive

points within the short distances.

1. The urban infrastructure

construction level is below the

demand of economic

development.

2. A lot of untreated domestic &

production wastewater discharged

into the city drains or the Sanba

River directly; as a result, the

pollution of water body is

worsening and lowers the urban

landscape level. Low capacity of

city flood control and drainage,

subjected to frequent flooding

disasters and lower the living

standards.




Table 139 : Zero-project Analysis for Huaiyuan County Integrated Environment Improvement

Project

Component


Huaiyu

an

Flood

Contro

l

Project

Adv

anta

ges

1. Improve city's overall capacity

of flood control and drainage,

increase the flood storage

capacity of the ponds and

increase the drainage capacity

of flood discharge trench, so as

to mitigate the flood harms to

the urban and residents.

2. Improve the surrounding

environments of ponds and

flood discharge trench, improve

the people's quality of life and

promote the sustainable

development of Huaiyuan.

Avoid the various impacts which

caused during the construction and

operation periods of Proposal A.

Disa

dva

ntag

es

1. Less dust, waste (sewage)

water, noise, solid wastes and

other pollution are generated

during the construction period.

2. Destroy the vegetation, cause

the soil erosion, increase the

temporary traffic pressure and

destroy the landscapes on

construction site.

1. Low storage capacity of water

storage ponds. Poor capacity of

flood discharge of the trench, with

the more disaster risks.

2. Frequent overflow situations of

the ponds and flood discharge

trench during the heavy rain,

which affect the quality of life of

the neighboring residents.

Huaiyu

an

Road

Project

Adv

anta

ges

1. Improve the highway Class and

traffic level of Huaiyuan

Country, perfect the road

network system, promote the

city’s development and improve

the life of the local residents

and the traffic conditions.

2. Perfect the infrastructure

construction of the cereals and

oils processing zone, and

improve the capacity to attract

investment.

Avoid the noise and automobile

exhaust impacts which caused during

the construction period of Proposal A.




Disa

dva

ntag

es

1. Generate the dust, water

(sewage) water, noise, solid

waste etc. pollutions during the

construction period, destroy the

vegetation, cause the soil

erosion, and damage the

landscape of construction site.

2. Generate the traffic noise and

automobile exhaust during the

operation period, which affect

the nearby residents.

1. Bad condition of County

infrastructure and blocked urban

transport and roads, which limit

the overall development of

Huaiyuan Country and the foreign

exchanges of the residents.

2. Lack of the infrastructure

construction in the cereals and

oils processing zone, which affect

the logistics level and the

capacity to attract the investment.




Table 140 : Zero-project Analysis for Wuhe County Mohekou Integrated Environment

Improvement Project


Advantages

1. Construct the new drainage pump

station, improve the capacity of flood

control and drainage on the

construction site, reduce the regional

disaster risks, improve the investment

environment and promote the

sustainable economic development.

2. Construct the new surface water

plant and sewage treatment plant,

enhance the safety of the regional

drinking water, and boost the discharge

of sewage up to standard of the

enterprises in the park, so as to reduce

the pollution to the Huai River.

3. Improve the level of infrastructure

and spur the development of related

industries, as well as provide more

employment opportunities.

1. Avoid the relocation of and the

requisition of the farmlands of the

residents in the construction site,

maintain their current living sate

and land-using state.

2. Avoid the adverse impacts on the

environment during the

construction and operation

periods; stop the pollution risks of

industrial wastewater to the Huai

River.




Disadvantage

s

1. Cause temporary adverse impacts

on the surrounding atmospheric, water

and noise environments.

2. Relocate the residents, requisition of

the farmland, destroy the vegetation

and natural landscape;

3. Sewage treatment plant, water

purification plant, roads etc. will

permanent occupy some land, and

change the land using patterns.

4. Enterprises generate the

wastewater, exhaust emission and

noise pollutions during the production.

5. Sewage treatment plant and other

plants generate the foul smell, sludge

and other pollutants during the

operation, which affect surrounding

environment to a certain degree;

6. Raise the sewage treatment costs

and increase the living expenses of the

residents;

1. Along with the economic

development of the park, under the lack

of infrastructure, the discharge of the

sewage from the enterprises will

increase the volume of sludge in the big

ditches and the pollution levels, further

to threaten the security of

groundwater, and affect people's quality

of life and sustainable economic

development;

2. Low level of the enterprise sewage

treatment, which cause the pollution to

the Huai River.




8.2 Alternatives of Desilting Method for Longzi Lake

There are two desilting methods to dredge the sediment respectively by hydraulic dredging machine and cutter-suction dredger.

When using the hydraulic dredging machine for construction, and the workers operate the high pressure water jet to cut off high concentration slurry, and then slurry PS delivers them into piling up site by soil discharging pipeline. When retention time for sediment at piling up site has been over designated retention time, desilting project engineering wastewater produced at upper layer is discharged from outlet structure of the piling up site.

When using the amphibious environmental-protective cutter-suction dredger for construction, the scoop of the dredger is put on the mud layer to dig out polluted sludge, and then the slurry is formed by the mixture of soil and water, which is delivered to soil discharging pipeline by using the function of mud PS through desilting tube. Soil discharging pipeline can be linked to land based pipeline with surface water floating pipeline and also to downcast pipeline with by surface water floating pipeline and then to surface water floating pipeline, at last, it links land based pipeline to discharge the slurry into piling up site.

The detailed comparison for the two desilting methods is made in the table below:

Table 141: Comparison for Desilting Methods

Item Hydraulic dredging machine Cutter-suction dredger

Major

mechanical

equipments

Floating body, slurry pump, high

pressure squirt gun, pipelines and

power installation

Cutter-suction dredger, slurry pump,

pipelines and positioning installation

Applicable

conditionsShallow rivers and lakes with low flow

Widely applicable to various water bodies

and different working conditions, but there

is specific requirement for draft

Energy

consumption

Electricity consumption of slurry

pumps and high pressure squirt gun

Electricity consumption of slurry pumps

and high pressure squirt gun, and large

amounts of fuel consumption of cutter-

suction dredger

Working

efficiency

Low efficiency, high construction

intensity and labour intensity, and long

construction period

High working efficiency, fewer workers

required, and shorter working period

Preparatory

work

The pond should be dried for

implementation, and flow guide is

required before implementation.

To remove the foreign matters from the

water body to prevent the damage to

mechanical equipments.




Item Hydraulic dredging machine Cutter-suction dredger

Discharge Short discharge distanceLong discharge distance with flexible

choices

Precision

Artificially controlled, high excavation

precision without restriction of lake-

bottom topography, geology and

ambient environment

The precision is not as good as hydraulic

dredging machine with the permissible

over-depth of 0.3m and thus larger project

quantities;

Restricted by the ambient environment;

dredging work could not be done near

high-voltage tower frame and rock, stone

dam and optical fiber cable on lake bottom;

the shallow parts close to the bank could

not be dredged.

Environmenta

l impacts

- Sole electricity consumption, less

pollution

- Flow guide by surrounding weir

before implementation without the

dramatic increase of suspended

solid in the water

- Small project quantities, and the

residual water from de-silting could

be reused for high pressure squirt

gun, little discharge of residual

water.

- Generation of waste fuel gas

- Agitation of bottom silt and generation

of secondary pollution

- Large project quantities, and the

residual water will not be reused, but

discharged in large quantities

Ecological

impacts

- Less impact on plankton and fish

due to less impact on water quality

- Less damage to planktons and

their living environment by artificial

de-silting

- The dredging quantity and thus

land occupation for dump sites

could be reduced due to high

excavation precision.

- More impacts on water quality, the

living environment of aquatic organism

could be changed, which will impact

photosynthesis of aquatic organism.

- The benthonic animals and their habitat

are completely destroyed, the fauna,

species, quantity, species structure and

ecological niche of animals on the lake

bottom within the project area will be

greatly impacted

Since the thickness of polluted layer in this project is around 0.3m, and the permissible over depth of cutter-suction dredger is already 0.3m, and the shallower part near the bank could not be dredged by cutter-suction dredger, by comprehensively analyzing the implementation precision, the environmental impacts and the disposal of dredged sludge, it is considered that the hydraulic dredging machine is more suitable for the project.




8.3 Alternatives for Mohekou Project

8.3.1 Alternative Analysis for Mohekou WTP

8.3.1.1 Water Source for Mohekou WTP

For the proposed WTP in Mohekou Industrial Park, five options have been considered for the water sources, that is, (A) Huai River, (B) Huaihongxin River (Xiangjian Lake), (C) Beifei River, (D) groundwater and (E) the water filtrated from the Huai River, as indicated in the following figure.

Figure 31: Locations of Optional Water Sources for the Proposed Mohekou WTP

The comparison of these five options is detailed in the table below.

Table 142: Comparison of Water Source Options for Mohekou WTP

Option

Current

Water

Quality

Advantages Disadvantages

(A) Huai River

Class

IV

- Short distance from the

Mohekou Industrial Park.

- There is no flow in the dry season

(October~May) when the Bengbu Gate

upstream is closed.

- The water for the section downstream of

the Bengbu Gate is badly polluted in dry

season, which could not meet the minimum

national standard for drinking water.




Option

Current

Water

Quality

Advantages Disadvantages

(B) Huaihongxin

River (Xiangjian

Lake)

Class

III

- According to the “Water

Source Plan for Bengbu

Municipality in dry season”, the

Xiangjian Lake has the

400,000m3/d capacity for

100days. However, it is not

included in the Bengbu

Municipal Water Supply Master

Plan, which means it could be

used for the proposed

Mohekou WTP;

- The water quality is good.

- The Lake is about 17km away from

Mohekou, which will result in the high

investment.

(C) Beifei River

Class

IV~V



- Due to the multiple flow diversion along the

river, its flow rate of the downstream

section is very low.

- The water quality is very poor due to the

pollution of industries along the river.

(D) Local

Groundwater

NA



- According to the “Preliminary Assessment

Report on Groundwater Distribution of

Wuhe Mohekou Fine Chemical Industrial

Park”, the single-well water yield in the area

is 100-500m3/d, which is considered not

sufficient to be used as the large-scale

water supply source.

(E) Filtrated Water

from Huai River

NA



- According to the “Preliminary Assessment

Report on Groundwater Distribution of

Wuhe Mohekou Fine Chemical Industrial

Park”, the single-well water yield of the

borehole 1.8km away from the Huai River is

only 200m3/d, which is considered not

sufficient to be used as the large-scale

water supply source.

- The water resource department indicates

that the utilization of filtrated water will have

adverse impacts on the Huai River Dyke.

The water resource department has already

stopped the use of existing well near the

Huai River Dyke.




By comparison, the water quality for the Mohekou section of Huai River and Beifei River is not stable, and it is particularly poor in the dry season and could not be used as the drinking water source. The groundwater in Mohekou and the filtrated water from Huai River don’t have enough capacity for large-scale water supply. Therefore, it is proposed in the project to use the surface water of Huaihongxin River as the water supply source for the Mohekou WTP. However, in view of the pollution risk, it is suggested in the FSR to reserve the borehole of the existing groundwater WTP in the Mohekou Township as the backup water source.

8.3.1.2 WTP Location

Two options have been considered for the WTP location, as shown in the figure below:

Option A: Construct the WTP in the Mohekou Township and the water intake is at Yuanji beside the Xiangjian Lake. Transmit the raw water with the 17km pipeline from the water intake to the WTP for treatment. The treated water will directly supply the urban network;

Option B: Construct the WTP at Yuanji together with the water intake, transmit the treated water with variable frequency pumps and 17km pipeline to the network in Mohekou.

Figure 32: Alternatives for the WTP Location

For Option A, the WTP is proposed in the Mohekou Township, which is convenient for the uniform construction management. However, the long raw water pipe will




carry a large amount of mud and sand, and the treatment of mud and sand will increase the construction investment; for Option B, the construction management will be relatively difficult, but the treated water flow for Option B will be 8% lower than the raw water flow for Option A, which means its operation cost will be lower than that of Option A. And there is no need to invest on the sand treatment equipments. In addition, considering the construction of new-type rural area, the treated water could also serve the surrounding villages along its route, which could alleviate the unstable water demand due to the uncertainty of the park construction. To sum up, the Option B is recommended for the project.

8.3.1.3 Water Intake Process

Three options have been considered and analyzed as follows:




Table 143: Alternative Analysis of Water Intake Process

Option Advantages Disadvantages

A: Fixed open

caisson water intake

pumping house on

the lakeside

- The pumping house is

constructed on the dyke and far away

from the channel to ensure the

navigation safety;

- The water taking is safe and

reliable, and the maintenance and the

management is simple;

- With the intake head, the water

taking conditions of the pumps are

good;

- Easy for construction.

- The water is taken from the

bottom when the water level is high,

which means its sand content is higher.

B: Fixed frame water

intake pumping

house on the

lakeside

- Lower cost for civil works; - The pumping house is located in

the river with some impacts on the

navigation safety;

- Higher operation cost due to the

submerged pump.

C: Floating water

intake

- Implement by phase;

- Easy for construction;

- Shorter construction period;

- More flexible for water taking,

always taking the surface water.

/

To minimize the sand content and the short-term & long-term cost, considering the local conditions, the Option C is recommended by the FSR consultants.

8.3.1.4 Water Distribution System

The single water distribution system and the dual water distribution system have been considered for the project. The dual water distribution system could supply the industries and the residents with the water of different quality by different pipelines to lower the operation cost of the proposed WWTP. However, the project investment will be dramatically increased since two separate systems are required. And the dual water distribution system is still in the commissioning phase in China. In view of the actual economic conditions of Mohekou, the dual




water distribution system is not recommended for the project, especially for the short term. The conventional single water distribution system will be adopted.

8.3.2 Alternative Analysis for Mohekou WWTP

8.3.2.1 WWTP Location

Two locations have been considered as shown in the following figure.

Figure 33: Alternatives for Mohekou WWTP Location

Both locations are to the north of the Bengning Highway, only around 1km away from each other. The detailed comparison is shown as follows.

Table 144: Alternative Analysis of WWTP Location

Location A Location B

Detailed

location

East of the planned Chenqiao Road, south of

Shiwang Road

East of the planned Jiaotong Road, south of

Caowu Road

Current land

use

Farmland, no additional resettlement.

Farmland, but according to the latest master

plan of the industrial park, this piece of land has

been allocated to three industries: “Jiasi

Chemical”, “Huaihe Rubber Aids” and “Organic

Silicon Industrial Park”.

Ground

elevation15.1m 15.8m

By comparison, the Location A is recommended.

8.3.2.2 Outfall of Mohekou WWTP




The proposed WWTP for the Mohekou Industrial Park is located to the northeast of Bengning Highway, north of the Mochongyin River. Its treated effluent is planned to be discharged into the Huai River. Three options have been respectively proposed by the national FSR consultants and the NCMDI for the effluent discharge as presented and compared below:

- Option A: Construct a sewage lifting PS in the WWTP site, and discharge the effluent into the Huai River with a pressurized pipe over the Huai River dyke;

- Option B: Discharge the effluent into the Mochongyin River and then into the Huai River by gravity through the Sanpu Gate;

- Option C (by NCMDI): Directly discharge the effluent into the water diversion ditch of the Sanpu Lake Storm Drainage PS through the pipe.

Table 145: Alternative Comparison for the Outfall of the Mohekou WWTP

Option A Option B Option C

Advantage

- Reduce the buried depth of

the sewer into the WWTP so

as to reduce the construction

difficulty and lower the cost;

- The effluent discharge pipe of

the WWTP could be laid

along the Jiaotong Rd. to

reduce the land occupation

and the crop compensation

cost and facilitate the local

transportation

- The effluent could be

discharged by gravity into the

Huai River when the Huai

River level is low so as to

reduce the operational cost of

the WWTP.

- No need to add new pollution

discharge outfall;

- The pollution risk for the

Mochongyin River and the

surrounding farmland and

crops could be prevented;

- The water diversion ditch could

become the buffer tank for the

effluent discharge when there

is accident in the WWTP in

order to prevent the pollution of

the Huai River and timely take

efficient emergency measures.




Option A Option B Option C

Disadvantage

- A lifting PS is needed which

increases the investment;

- A new outfall is needed at the

bank of the Huai River;

- Pipe should be laid in the

existing farmland, high

resettlement cost;

- The pipeline has to go

through the Huai River dyke

which increases the

construction difficulties and

badly impacts on the normal

use and safety of the dyke;

- The direct discharge of the

WWTP effluent into the Huai

River without buffering could

severely pollute the Huai

River when there is accidental

discharge.

- Mochongyin River is an

agricultural irrigation ditch.

The toxic and hazardous

contents in the WWTP

effluent from the industrial

park will endanger the crop

growth and result in soil

pollution;

- Mochongyin River runs

through the Mohekou Town.

The effluent odor will impact

the residents’ life;

- A new pollution discharge

outfall on the Mochongyin

River. There is pollution risk

for Mochongyin River if the

accidents happen to the

WWTP.

To sum up, for Option A, on principle no new pollution discharge outfall along the Huai River is allowed except the written approval of both the water resource department and the environmental protection department is obtained; for Option B, the effluent could not be used for irrigation even if it is treated up to the Class 1A standard. In addition, there is high risk of pollution to the ambient soil, groundwater and crops for such industrial wastewater; in contrast, the Option C is environmentally the best solution, which is recommended by the EA.

8.3.2.3 Wastewater Treatment Process for Mohekou WWTP

- Influent Quality

According to the list of 22 contracted industries of Mohekou Industrial Park (as shown in the Table 146), there are 10 chemical industries and 7 light industries. With the WWTP completion, the Class III wastewater discharge standard of the Comprehensive Wastewater Discharge Standard (GB8978-1996) will apply to these industries, e.g. CODcr=1000mg/L for chemical industries such as dye, organic phosphorous pesticide, biological pharmaceutics and biological pharmacy, which is much higher than the 500mg/L for general industries. Due to the lack of




information on the industries in the Mohekou Industrial Park, some other WWTPs for similar chemical industrial parks have been used as the reference in the design to deduce the influent quality of the Mohekou WWTP, such as the Shanghai and Nanking Chemical Industrial Parks as presented below. And the influent quality of Mohekou WWTP is finally defined as: CODcr450mg/L, BOD5120mg/L, SS200mg/L, NH3-N 30mg/L, and TP3.5mg/L for the design.

Table 146: List of Contracted Industries in Mohekou Industrial Park

No. Industry Name Type

Water Demand (t/d) Land

Occupation

(ha)

Short Term

( 3-6 Years)

Long Term

(6-13 years)

1 Anhui Juyuan Chemical

Co. Ltd.

Chemical 30 100 5.3

2 Wutong Battery Light Industry 20 150 2

3 Anhui Longhai Seed

Industry

General

processing

20 150 1.3

4 Anhui Yongheng Textile Light Industry 1500 5000 7.2

5 Bengbu Fu’ande Light Industry 20 100 2

6 Bengbu Cultural Color

Printing

Light Industry 10 50 1.3

7 Tongda Municipal Light Industry 50 200 /

8 Bengbu Tengfei Heat

Preservation Vessels Co.

Ltd.

Construction 100 500 4

9 Bengbu City Huaihe

Rubber Additives Factory

Chemical 100 500 2

10 Bengbu Guanghua Fine

Chemical Factory

Chemical 100 500 2

11 Biaoshen Electronics

Technology Co., Ltd.


12 Japan Cherry

Technology Co., Ltd.

Chemical 200 2000 40

13 Qianxinkun International

Group Co., Ltd.


14 Beijing Feige Dadi

Cultural Art Center

Culture 20 100 4

15 Jiasi Chemical Chemical 50 300 2

16 Shanghai Xiangde Wood

Co., Ltd.

General

processing

200 1000 10

17 Wuhan Kaidi Power Co.,

Ltd.

Power

generation

1000 3000 26.7




No. Industry Name Type

Water Demand (t/d) Land

Occupation

(ha)

Short Term

( 3-6 Years)

Long Term

(6-13 years)

18 Taide Development Co.,

Ltd.

Chemical 1000 3000 /

19 Anhui Baishi Chemical

Co., Ltd.

Chemical 500 2000 13.3

20 Bengbu Longchang

Rubber Products Co.,

Ltd.

Chemical 200 600 1.3

21 Nantong Huaxia

Chemical Co., Ltd.

Chemical 10000 20000 /

22 Hefei Jianlongbao

Technology Development

Co., Ltd.

Chemical 2000 3000 4

Total 17520 21050 155

Table 147: Influent Quality of the WWTPs in Shanghai and Nanking Chemical Industrial Parks

Name Influent Quantity (m3/d)

CODcr (mg/L) BOD5 (mg/L) SS

WWTP of Shanghai

Chemical Industrial Park

7000 700 250 350

WWTP of Nanking Chemical

Industrial Park

12500 1000 300 300

However, the WWTPs for chemical industrial parks are different from other normal municipal sewage treatment facilities. Most of the wastewater for the proposed WWTP comes from the industries, which means its organic content among the pollutants is generally lower than that of the urban sewage. Defining the influent quality from a conservative point of view based on the upper limits of the investigation is better to guarantee the up-to-standard reliability during the operation period of the WWTP. Therefore, by analogy analysis, it is concluded that the influent quality proposed by the FSR seems too low, and further justification is required in the follow-up design.

- Alternative Analysis of Wastewater Treatment Process




Since the influent would mainly come from the chemical industries, and the effluent of the proposed WWTP has to meet the Class 1A discharge standard (GB18918-2002), which is BOD5≤10mg/L, COD≤50mg/L, SS≤10mg/L, NH3-N≤5mg/L, TN≤15mg/L and TP≤0.5mg/L, the biological and physi-chemical combined treatment process is proposed for the project.

The biological treatment process aims at the removal of nitrogen and phosphorous. Two popular processes have been analyzed in the FSR as the alternatives, that is, Option A—A2O process and Option B—Carrousel 2000 oxidation ditch with pre-anaerobic process. The details are presented in the table below.




Table 148: Alternative Analysis for the Biological Treatment Process of Mohekou WWTP

ItemOption A

A2O process

Option B

Carrousel 2000 oxidation ditch

with pre-anaerobic process

Treatment Effects Good Good

Technology Advancement and

Maturity

Advanced, mature with wide

application

Advanced, mature with some

application

Power Efficiency High Low

Number of Structures Required Many Few

Treatment Process Complicated Simple

O&M Complicated Simple

Operation Reliability and Flexibility Higher High

Land Occupation Less More

Number of Equipments Required More Few

Construction Investment 78.75million RMB 77.52million RMB

Annual Power Consumption 1,850,000kwh 2,100,000kwh

Unit Treatment Cost 1.15 RMB/m3 1.16 RMB/m3

Unit Operation Cost 0.67 RMB/m3 0.69 RMB/m3

By comparison, the A2/O process is technically advanced, mature and stable with good treatment effects, less land occupation and wide application in China. Economically, although the investment of Option A is a little higher than Option B, but its power consumption is lower than that of Option B. Therefore, from a long term view, Option A is recommended for the project. However, due to the special characteristics of the chemical industrial wastewater, some pretreatment processes are required to strengthen and stabilize the biological treatment process, such as the conditioning tank and the pre-physichemical treatment process (flocculation and settlement).

The advanced treatment is mainly to further remove SS together with the organic matters. Two options have been considered in the project design, as presented in the Table 149. By comparison, Option B is recommended for the advanced treatment process of Mohekou WWTP.




Table 149: Alternative Analysis of Advanced Treatment Process

No. Option A

Flocculation+Settlement+Filtration+Disinfection

Option B

Mixture+Filtration+Disinfection

1Many structures, difficult to implement,

complicated operation and management.

Fewer structures, easy to implement, and

simple operation and management.

2

500m2 is required for the settling tank, which will

cause difficulty in the general layout and the

connection with the previous and following

process, and impact the uniformity of water

distribution.

No settlement process.

3 The filtration load is lower after settlement. Higher filtration load

4 Higher project investment. Lower project investment.

Comparably, in order to meet the Class 1B standard of GB18918-2002, Tianjin Chemical Industrial Park (mainly green fine chemical industries, ocean chemical industries and high-tech chemical industries) has finally selected the process of Hydrolytic Oxidation+ Bio-Reaction+MBR Filter for its WWTP, whose actual CODcr removal rates for different processes are as follows:

Table 150: Comparison of CODcr Removal Rate between Tianjin Chemical Industrial Park and Mohekou Industrial Park

Project CODcr Conc. Removal Rate

Influent 1000mg/L

Hydrolytic Oxidation Tank Effluent 600 mg/L 40%

Bio-Reaction Tank Effluent 90 mg/L 85%

MBR Effluent 45 mg/L 50%

Total Removal Rate 95.5%

Removal Rate required by Mohekou WWTP 88.9%

It can be concluded that the Hydrolytic Oxidation+ Bio-Reaction+MBR Filter process can meet the Pollutant Discharge Standard for Municipal Wastewater Treatment Plants (GB18918-2002), Class 1A, as required for the Mohekou WWTP. The EA consultants have doubts about whether the process proposed in the FSR can meet the Class 1A Standard of GB18918-2002; therefore, it is suggested to further justify the process in the follow-up design.




9 Information Disclosure and Public Consultation

In accordance with the World Bank requirements, the information disclosure and two rounds of public consultation were conducted during the course of the environmental impact assessment, as detailed in the following sections.

9.1 Information Disclosure

The information disclosure refers to the publicization of the proposed project contents and the potential environmental impacts at the construction sites in order to ensure the timely access of affected groups and local public to the relevant information.

The information disclosure for this project was carried out in three phases:

- Phase I: Disclose the project information in the governmental bulletin board of the project sites and the local newspaper after the initial project identification;

- Phase II: At the early stage of EA preparation, disclose the basic project information and the potential environment problems based on the completed EA outlines on the websites of the local governments, and collect the public feedback and public opinions;

- Phase III: After the completion the draft individual EA reports and the consolidated EA report are disclosed on the public websites. The individual EA reports and the Chinese consolidated EA report are publicized on the local website and the libraries of the project areas, and the English translation of the consolidated EA report is disclosed on the World Bank website.




Table 151: Summary of Information Disclosure for BIEIP

PhaseDisclosed

InformationBy Whom When Where

IInitial Project

Scope

Huaishang District

Government and NCMDI2007.1.26

Bulletin Board System of

Huaishang District

Government

Huaiyuan County World

Bank Project Office and

NCMDI

2007.1.26

Bulletin Board of

Huaiyuan County

Government

Guzhen County World

Bank Project Office and

NCMDI

2007.1.27

Bulletin Board for

Governmental Affairs of

Guzhen County

Government

Yuhui District Government

and NCMDI2007.1.28

Bulletin Board of

Changqing Township,

Qinji Town

Wuhe County World Bank

Project Leading Group

Office and the NCMDI

2007.1.30

Administration Committee

of Mohekou Industrial

Park

II

Basic project

information and

potential

environmental

problems

Municipal PMO and

NCMDI2007.3.30

Website of Bengbu

Municipal Government

Municipal PMO and

NCMDI2007.4.4 Bengbu Daily (newspaper)

III

Notice of

information

disclosure

Municipal PMO and

NCMDI2007.8.10 Bengbu Daily (newspaper)

Disclosure of

the full-text

versions of the

EA reports

Municipal PMO and the

governments of the three

counties

2007.8.10

Municipal Library and the

libraries of the three

counties




Figure 34: Online Public Notification of Project Information (Phase II)




Public Notification in Guzhen County Public Notification in Huaiyuan

County

Public Notification in Huaishang District Public Notification in Wuhe

County

Figure 35: Information Disclosure at the Project Sites (Phase I)




Figure 36: Information Disclosure about Public Consultation in Bengbu Daily (Phase II)

Bengbu Daily Bengbu Municipal Library

Figure 37: Information Disclosure of EA reports (Phase III)

9.2 Public Participation

This project covers a broad area with the complex composition of impacted population. The project in the urban area mainly involves the inhabitants in the old urban area and a few villagers in the newly planning area; the three county projects are relatively far away from the urban area, most of the impacted people are farmers, so the public consultation and the public participation should be carried out according to the different characteristics of the impacted people in different areas.

Four forms of public participation have been taken for the proposed BIEIP, including the public consultation meeting, the expert consultation by letter, the interview with the impacted public on site, and the questionnaire survey, which




are implemented in 2 phases. The Phase I was carried out at the beginning of the EA preparation from Jan. 2007 to Apr.2007, and the Phase II was carried out in Jul. 2007 when the draft EA reports were finished.

The first public participation is primarily carried out by the on-site interview and questionnaire survey. Totally 240 public participation questionnaires have been distributed for the 8 sub-projects, 220 of which have been collected with the recovery rate of 92%. The investigated area covered the Bengbu urban area and the project area in the three suburban counties.

In the second public participation, different methods were adopted in view of the different projects. With the EA progress, the major affected people and areas were screened out for the targeted public consultation. At the same time the EA consultation meetings and expert consultation was also conducted.

- For the planning urban area of Bengbu, the public consultation was carried out by interview and questionnaire survey in the key project areas. Totally 550 copies of public consultation questionnaires were distributed in the major impacted areas around the five sub-project sites (urban drainage, Longzi Lake, Xijiagou Canal, Huaishang District and Tianhe PS), 531 copied were collected with the recovery rate of 97%;

- For the suburban sub-projects, the EA consultants organised the public consultation meetings together with the project owners respectively in the Huaiyuan County, Guzhen County and the Mohekou Town of the Wuhe County, and the questionnaires were distributed at the meetings. Totally 300 copies of the questionnaires were distributed, and 273 copies were collected with the discovery rate of 91%;

- In addition, seven local experienced experts in the fields of water conservancy, municipal infrastructure and environmental protection were consulted for the proposed BIEIP by special advisory opinion sheets.




Figure 38: Public Participation

9.2.1 Conclusions of the First Public Participation

According to the on-site interview and the statistic results of the distributed public consultation questionnaires during January~February 2007, the major conclusions for the first public participation are summarized as follows:

1. 100% of the investigated people support the BIEIP construction;

2. 98% of the investigated people think the existing drainage system of the city requires urgent improvement;



On-site Interview

Huaiyuan County

Public workshop in Mohekou Town

Public workshop in Guzhen County

Public Consultation Meeting in Huaiyuan

Public Consultation Meeting in Mohekou

Public Consultation Meeting in Guzhen


3. 70% of the investigated people have ever suffered from floods, and 30% have even suffered from frequent floods;

4. Almost all the investigated people think that it was very necessary to improve the local flood control and storm drainage facilities;

5. About 80% of the investigated people think that the existing drainage system of Bengbu Municipality is incomplete, and the water quality of the urban area has been badly impacted, especially the Xijiagou and Baligou canals.

6. In terms of the possible environmental impacts, 35% of the investigated people think that traffic will be the major impact during the project construction, 25% consider the noise as the major impact, 20% concern most about the flying dust by project construction and the rest 20% concern most about the temporary land occupation. 70% of the investigated people could accept the short-term adverse impacts during the construction, and 30% emphasize that effective measures should be taken to mitigate the adverse impacts during the construction. That means the local public could accept some negative impacts during the construction to improve their living environment;

7. 100% of the investigated people believe that the project would play a positive role in many aspects, and the project construction should be accelerated.

9.2.2 Conclusions of the Second Public Participation

According to the questionnaires survey carried out from July 4 ~ 10, 2007 both for the urban projects and the suburban projects, the major conclusions are summarized as below.

Among the surveyors, 100 percent of the surveyors expressed their supports to the construction of Bengbu city project of the facility for flood prevention and drainage pumping and for the comprehensive environment improvement, using the World Bank. They thought that this project is a good project benefiting the people and promoting the urban development. The surveyor thought generally that the project construction can enhance the ability of flood and drainage prevention and safety controlling in the city’s flood season, perfect city’s infrastructure, improves the urban combined environment, enhance the residents’ living quality of life, promote the city overall image, enhancement the ability to attract commercial investments, and promote the development of local economy.

Above 90% of the surveyors all said they know about the construction project situation, other people said they know about the project construction of Bengbu city project of the facility for flood prevention and drainage pumping and for the comprehensive environment improvement, using the World Bank,




which indicated that the information publicity of the this project achieved remarkable success.

1．For Tianhe flood prevention project: The surveyors generally reflected that drainage condition was serious in the

flood season in the Tianhe area, especially the riverside marsh land. The drainage water can only disperse into the Tianhe, not outside into Huai River, which caused the great loss in agricultural production. The construction of large-capacity drainage PS is extremely needed;

On the other hand, after the Tianhe Lake has been recognized as the water source in emergency, above 90% peripheral farmers were worried that it will affect the normal water taking for the Tianhe peripheral agricultural production to take water from the emergency water source in the water lacking period of the drought season.

95% people thought main adverse effects in the construction period were the transportation impeded and the land occupying.

More than 90% of the people thought that the main function of the construction Tianhe PS was to enhance the Tianhe drainage pumping ability, to guarantee the safety of the Tianhe peripheral area in flood season, to promote agricultural production.

No surveyors expressed adverse opinions in the location choice of the Tianhe PS.

2．For Longzi Lake project All the surveyors expressed their supports to the project construction. But

they hoped that the drainage PS project should do rational planning before the construction, consider the expense and production of the project construction, use the fund reasonably, and cut down the expenditures.

75% of the surveyors reflected that the coastal area of the Longzi Lake drains water was impeded frequently in the flood season. They thought it is necessary to carry on scouring, coordinating to drainage PS construction simultaneously to improve the ability effectively of flood prevention and drainage pumping in this area.

60% of the surveyors thought it was extremely necessary to clear the silt in Longzi Lake, and it can improve the local overall environment to do coordinated coastal slope protection forestations.

The surveyors all agreed that the main adverse effects in the project construction were the construction raising dust, the transportation impeding and the land occupying. It is hoped to decrease the influence by reducing




construction time and realizing the construction environmental protection measures.

3．For urban water and drainage pumping project 92% of the surveyors reflected that Bengbu's drainage system was impeded,

and it is needed urgently to consummate the municipal drainage system construction.

90% of the surveyors thought the construction of the draining water pipe network will be advantageous in improving the urban overall water environment.

98% people thought it is extremely helpful to construct rain and sewage pipe network in the Longzi Lake District for the improvement of the Longzi Lake and the peripheral water environment.

4．For Xijiagou Project 92% of the surveyors indicated that they support the construction of the

project. They also thought that the scouring of the ditches and the new building of the drainage PS at the same time can effectively enhance the ability of the flood prevention and drainage pumping in local area;

More than half of the surveyors expressed their great unsatisfaction with the peripheral environment of Xijiagou and Baligou. The main problems were the water environmental pollution caused by the sewage discharge, the odor caused by the trash in coast stacks, and the environmental sanitation problems.

The surveyors all agreed that the main adverse effect in the project construction is the transportation and the land occupying. It is hoped to decrease the influence by reducing construction time and realizing the construction environmental protection measures.

5．For Huaishang District Project All the surveyors supported the project construction, and they thought it

essential to improve the drainage system and enhance the ability of flood prevention and drainage pumping in Huaishang area. To build and consummate the infrastructures such as the road in the north area of Huai River main dike, the draining water pipe networks and so on;

92% of the surveyors reflected existing drainage pumping system was impeded in the Huaishang area. They also indicated that through scouring the silt in the ditches and canals, building new (changing, expanding) drainage PSs , reinforcing embankment and so on to enhance the ability of flood prevention and drainage pumping in Huaishang area;




The surveyors thought that with the implementation of the project the main order of the impacts on their living were the noise; the raising dust, the temporary land occupying and the transportation, respectively. They hoped that in the construction the construction agency should pay attention to publicizing the construction announcement in advance, constructing according to the plans, using environmental protection measures to dustproof, noise reduction, wastewater processing and so on, reducing the temporary land occupying, occupying less farmlands, shortening the project working period, restoring the surface vegetations promptly.

The surveyors suggested that the project should occupy less farmland in caring about the people’s actually difficulty; the project should speed up the progress; in the PS construction the river system should be safeguarded to be unimpeded; Inhabitant's relocation and arrangement should be dealt with promptly. The project construction agency should pay attention to the surveyors’ suggestions, and help the project complete smoothly.

6．For Guzhen County Project 84% of the surveyors indicated the understanding of the project construction,

96% indicated their support to the project construction, and nobody expressed the opposition.

63% of the surveyors expressed their unsatisfaction with the existing drainage channel flow capacity of the Guzhen County. They thought that the environmental sanitation condition of the peripheral canal was poor at the central town in Guzhen County.

87% of the surveyors thought that the flooding disaster in Guzhen County was serious. 90% of the surveyors agreed that the flood discharging and drainage pumping ability of the existing drainage ditch PS was not able to meet the requirements for flood prevention and draining water pumping.

The surveyors all agreed that the main adverse effects in the project construction will be the transportation impeding, the land occupying in the construction as well as the noise influence. It is hoped to decrease the influence by formulating the construction plan scientifically, reducing the construction time and realizing the construction environmental protection measures.

7．For Huaiyuan County Project Nearly all the surveyors expressed their supports positively to the project

construction, and hoped that this project implements as soon as possible.

The surveyors generally reflected that the ability of flood prevention and drainage pumping in Huaiyuan County was poor. They also suggested several




measures to enhance comprehensively the ability of flood prevention and drainage pumping, such as building new drainage PS, doing silt scouring of drainage ditches, reinforcing embankment, etc.

All the surveyors told that because various wastewaters were discharged and the trash was casually stacked, the peripheral environmental sanitation condition was extremely poor the suburban pools and drainage ditches in the Huaiyuan County Town. They indicated that it was extremely necessary to carry on comprehensive improvement, including silt clearing and vegetation restoration;

The surveyor thought generally that the adverse effects during the project construction stage were mainly of temporary land occupying, construction noise and transportation consequences. They hoped to be informed ahead of time before the construction about the construction plan and the adverse effects. It is asked to decrease the influence by shortening the construction time, reducing the land occupancy and realizing the construction environmental protection measures at the construction place.

8．For Wuhe County Mohekou Project 95% of the surveyors indicated that they know the construction content and

the situation of this project; and expressed their supports to the project construction.

Regarding to the construction of the surface water works, the surveyors expressed cared about the supply water quality most, the guarantee of the water volume supply as well as the necessaries of the water supplying pipe network. They also indicated that they wish to use the water from the surface water works.

77% of the surveyors thought it was urgently needed to improve the water facilities, the sewage facilities, the road facilities in the industry development area;

The surveyors thought that the impacts on their living with the implementation of the project will be the raising dust, the transportation, the noise and the temporary land occupying. It is hoped to decrease the influence by formulating the construction plan scientifically, reducing the construction time and realizing the construction environmental protection measures.

9.2.2.1 Feedback Opinions and Concerns

According to the results of the EIA personnels’ visit on site as well as the survey of public participation to each sub-projects, the EIA agency will feed back the public




opinion and worries collected to the departments concerned. The public opinions and the feedback results are shown in Table 152:

Table 152: Summary of Public Opinions and the Feedback Results

Serial

number

Public opinions and the

problems worried

Department for

feedbacksuggestions for handling

1

During the construction

period, reduce land

occupying area, announce

ahead of time, finish

pollution preventing and

controlling in the

construction period

Designing agencyCarry on multi-plan selection, reduce the

land occupying in the project;

Project

construction

agency

choose the construction unit seriously,

take the plan and the arrangement of

temporary occupying land area in the

construction as the evaluation target

Construction

agency

formulate construction plan, make clear

about the construction arrangement and the

progress; complete the construction

announcement before the construction

admission

EIA agency

consummate the construction contamination

control and the environmental protection

measure

2．Mohekou Town farmers

hope to use water

supplied by the surface

water works

Planning

department

Formulate the corresponding water supply

plan

Wuhe County

urban construction

department

construction of the necessary water supply

pipe network of the Mohekou Town

The association of

pipe network In

Mohekou Garden

zone

connections for Mohekou Town water taking

should be reserved in water supplying main

pipe

designing agency

Based on the water consumption in the

Mohekou Town, consider a convention on

the scale of the surface water works and

water resource with Huaihongxin River

Xiangjian Lake. Guarantee the water

supplying ability

3

The public in Huaishang

area requested that the

construction agency care

about people’s actually

difficulty and the project

Construction unit

Do comparison and selection of multi- plans

on the project contents and the selected

location occupying land area, take less

occupying land area and non occupying of

farmlands as the principle, demonstrate the




Serial

number


problems worried

Department for


should occupy less

farmland.

project necessity fully

designing

department

carries on the technical proof on the

construction scale and the implementation

plan

to avoid waste in land resources and the

construction funds

Construction unit

use advanced environmental protecting

working practice, enhance job location

management, control the construction

temporary occupying land area strictly

It is suggested that the

river system should be

unimpeded in the

construction of the PS.

the construction

agency,

Designing

department

Formulate detailed construction plans, the

construction technology methods required

are included in the tender content of the

construction

the construction

unit

Complete the adjustment of the temporary

drainage system before the construction,

Jamming of the original drainage channel is

not permitted

The inhabitant's relocation

and placement should be

set in time and well

arranged.

Construction unit

The construction unit executes the related

national policies strictly according to the

relocation placement plans and the

compensation standards.

Make sure of the each expense of the

placement and guarantee the prompt

arriving of the compensation fund.

Local government

The local government does the surveillance

and the coordination for the relocation and

placement work.

4

The public at Xijiagou and

Baligou, Guzhen County,

the location of the

Huaiyuan County project,

requested to strengthen

the management after

the completion of the silt-

scouring of the drainage

ditches and the ponds, in

order to avoid the

pollution of the trashes

the management

association of the

High- and new-

tech development

zone, each

construction

agency in the

Guzhen County,

and the Huaiyuan

County, as well as

the local urban

1. Carry on the necessary construction of

the sewage truncation pipe network at the

same time of silt clearing of the ditches and

the ponds, control the sewage injection

strictly.

2. Enhance environmental sanitation

management, forbid piling trashes near the

ditches and the ponds

3. Construct necessary facility for trash

receiving and transportation, guarantee

fixed point depositing of living trashes, do




Serial

number


problems worried

Department for


and the wastewater, and

to protect the social

environment benefit of

this construction project.

management

departments

centralized collection and shipment.

9.2.3 Summary of Public Consultation Meetings in the Three Counties

9.2.3.1 Huaiyuan County

The conference of “Huaiyuan County project of flood prevention and ecology treatment” was held at 9:00~10:30 in the morning on July 9, 2007 in the conference room of Huaiyuan County Development and Planning Commission. The conference was managed by Qin, the Director of the Development and Planning Commission. The representatives who attended the conference were 19 people in total, from the various areas of the construction located, mainly were the inhabitants in Chengguan Town community, farmers from Lizuizi village, Xinzhuangzi village, Meicheng village, Longtou Village, the inhabitants at the Bianhe Road, the staffs in the Chinese Medicine Hospital.

In the conference the project origin and its content were introduced first by the various projects construction units. Then the EIA agency analyzed and introduced the main environmental effects and the environmental protecting mitigation measures in the project construction period and the operation period. Finally the public representatives, the construction agency and the EIA agency made discussion and the opinion requiring on the main subjects. The public in the construction location expressed their opinions and the ideas. The main subject and the public opinion of the conference are summarized in Table 153.

Table 153: Summary of Public Consultation Meeting Results for the Huaiyuan Project

Main subjects Main conclusions Resolving proposals

What is the most

unsatisfied aspect in the

present environment

situation in the region

involved in the project?

1) The most unsatisfied aspect in the

present environment situation for the

inhabitants is the poor ability of the city

drainage pumping. For example, the Lizuizi

drainage system was flooded so seriously in

the rainy season that it affected the ordinary

living.

2) It is hoped to consummate the drainage

The opinions were feedbacked to

the construction agency as well

as the designing agency, and

were considered in the design

proposals.





system and enhance flow capacity of the

draining water PS. The PS should be

designed in two ways as the self-pumping

and the motor- pumping.

2．What are the worries of

the public about the

adverse environmental

effects as well as influences

on their own lives brought

in the construction stage

and the operation stage of

the project?

1) The inhabitants thought that the

transportation and the raising dust were the

main problems worried about, especially the

problem of transportation. The reason is that

the pipe network consummation project was

mainly in the Chengguan Town where it was

very easy to have the traffic jam with its

narrow streets.

2) At the same time, the sandy soil was also

very easy to influence the inhabitants living

near both sides of the road in its

transportation process. Therefore it was

suggested that the construction plan should

be well formulated in the construction

period.

3) Under the coordination of the

transportation management department,

complete the work of traffic control and the

optimization of the transit route.

1) Feedback the public’s

opinions to the construction

agency and request them check

strictly in the construction tender

process and formulate the

construction plan scientifically.

2) In the EIA report, do

supplement and consummate

measures of the corresponding

construction management and

pollution prevention and

controlling in order to minimize

the adverse construction

consequences.

3. What are the public’s

opinions on the

environmental impact

mitigation measures in the

project construction stage

and the operation stage?

1) The inhabitant believed that this project is

a project for the people. They can accept

various unavoided environmental effects in

the construction period and hoped this

project to implement as soon as possible.

2) Regarding to the environmental mitigation

measures in the construction period and the

operation period, the inhabitant

representatives agreed with the measures

proposed by the EIA agency. But it should

be carried out implement strictly especially

by the construction agency, the supervising

and managing agency and the inspector

agency according to the environment

mitigation measures EIA agency proposed.

1) Integrate completely the

environmental protection

measures proposed in EIA in the

environment management plan,

and request the project agency

to implement the investment fun

for the environmental protection

measures.

2) In the selection of the

construction agency, it is

suggested to take the realization

ability of environmental

protection measures and the

safeguard of the technical fund

as the key inspecting targets.





4. What are public’s

suggestions on the

environmental sanitation

maintenance and

management after the

project’s completion,

especially after silt clearing

of the ditches and the

ponds?

1 ） Regarding to the hygienic sanitation

maintenance and management after the silt

clearing of the ditches and the ponds, the

public proposed to manage it first by the

special person. At the same time to

strengthen the guidance of the

environmental protection and raise the

public understanding in environmental

sanitation.

2) Establish trash stacks and the collection

points at the inhabitant quarters around the

drainage flow ditches and the ponds. The

environmental sanitation department cleans

up and takes away at scheduled time.

1) Feedback the public’s

opinions to the construction

agency and the project local


department

2) Urge the department

concerned to consummate the

construction of trash stacks and

collection points in the

construction place. Collect and

send out in time the life trashes

in that area of the ponds and

drainage ditches, in order to

avoid pollution the second time.




9.2.3.2 Guzhen County

The conference of “Guzhen County project of flood prevention and ecology treatment” was held at 3:00~4:30 in the afternoon on July 9, 2007 in the conference room of the Guzhen County Development and Planning Commission. The conference was managed by Wang, the Director of the Development and Planning Commission. The representatives who attended the conference were 26 people in total from the various areas of the construction located, mainly were the farmers from the nearby villages at Dalou Community at Guzhen such as Xiaolou Village, Dalou Village, Laojie, Qili Village, Nanchenwei Village, Qi Village, etc. as well as the concerned personnel in the Guzhen Construction Bureau and the Water Conservancy Bureau.

In the conference the project origin and its content were introduced first by the various projects construction units. Then the EIA agency analyzed and introduced the main environmental effects and the environmental protecting mitigation measures in the project construction period and the operation period. Finally the public representatives, the construction agency and the EIA agency made discussion and the opinion requiring on the main subjects. The public in the construction location expressed their opinions and the ideas. The main subject and the public opinion of the conference are summarized in Table 154.

Table 154: Summary of Public Consultation Meeting Results for the Guzhen Project


1. For the public, what is

the most unsatisfied aspect

in the present environment

situation in the region

involved in the project?

1) The most unsatisfied aspect in the

present environment situation for the

inhabitants is the quite poor ability of the

city drainage pumping.

2) The city sewage collecting system was

imperfect and in the old city area the

hygienic condition near the drain was bad.

3) It is hoped to consummate the drainage

system. Clear silt in the city drains and

ponds as soon as possible to enhance

water logging treatment.

The opinions were feedbacked to

the construction agency as well

as the designing agency.

2．The public asked

problems about worries of

the adverse environmental

effects as well as influences


transportation, the raising dust, and the

environment sanitary, etc. were the main

problems worried about, in particular, the

1) Feedback the public’s opinions

to the construction agency and

request them check strictly in the

construction tender process and





on their own lives produced

in the project construction

stage and the operation

stage.

problem of transportation. Because in some

suburb villages transportation paths were

not very good and the villagers had difficulty

in transportation. The villagers worried

about the temporary occupying of the road

which will intensify this difficulty once the

project constructs creates.

2) It is suggested to formulate the

construction plan in the construction period.

The temporary access road should be

constructed when constructing nearby the

villagers’ channel in the suburb village. The

path in the village cannot be damaged. Do

the traffic control and the optimization

transit route.

formulate the construction plan

scientifically. In the construction

proposal, consider reducing

temporary land occupying and

stipulate the transit route for the

construction, complete the work

of supervising and managing.

2) In the EIA report, do

supplement and consummate

measures of the corresponding

construction management and

pollution prevention and

controlling in order to minimize

the adverse construction

consequences.

3. Ask the public’s opinions

on the environmental

impact mitigation measures

in the project construction

stage and the operation

stage.

1) The inhabitant believed that this project

is a project for the people. They can accept

various unavoided environmental effects in

the construction period and hoped this

project to implement as soon as possible.

2) Regarding to the environmental

mitigation measures in the construction

period and the operation period, the

inhabitant representatives agreed with the

measures proposed by the EIA agency. But

it should be carried out implement strictly

especially by the construction agency, the

supervising and managing agency and the

inspector agency according to the

environment mitigation measures EIA

agency proposed.



measures proposed in EIA in the

environment management plan,

and request the project agency to

implement the investment fun for

the environmental protection

measures.

2) In the selection of the

construction agency, it is

suggested to take the realization

ability of environmental protection

measures and the safeguard of

the technical fund as the key

inspecting targets.

4. What are public’s

suggestions on the


maintenance and

management after the

project’s completion,

especially after silt clearing

1 ） Regarding to the hygienic sanitation

maintenance and management after the silt

clearing of the ditches and the ponds, the

public proposed to strengthen the

management first. At the same time the unit

concerned should provide the convenient

condition for the neighbor inhabitant's trash

1) Feedback the public’s opinions

to the construction agency and

the project local environmental

sanitation department and

electricity supply department.

2) Urge the department





of the ditches and the

ponds?

collection so as to protect the project

achievement in clearing silt.

2) The public also proposed after

completion of this project, the power supply

department must guarantee each drainage

station to drain water normally. Let the

common people really see their actual

benefit the project taken.

concerned to consummate the

construction of trash stacks and

collection points in the

construction place. Collect and

send out in time the life trashes in

that area of the ponds and

drainage ditches, in order to avoid

pollution the second time.

Ask the construction agency and

the water conservancy

department to enhance the

operational management of the

PSs and guarantee the normal

operation of the drainage PSs.

9.2.3.3 Mohekou Town of Wuhe County

The symposium of “Wuhe County project of flood prevention and ecology treatment” was held at 9:30 ~ 11:00 on the morning of July 6, 2007 at the conference room of the Mohekou Industry Garden Management Commission. The representatives who attended the conference were 24 people in total from the villages of the construction located, from Mohekou Village, Tuanjie Village, Sanpu Village, Tangchen Village, Lijiawa Village, Yuanji Village, respectively.

In the conference the project origin and its content were introduced first by the projects construction agencies. Then the EIA agency introduced the environmental impact production stages (waste water, waste gas, solid waste, and noise), the pollutant emissions analysis, and the planned environmental protection measures and so on in the project construction period and the operation period, enabling the public to have a more comprehensive understanding to the project’s environmental consequences. Finally the public representatives, the construction agency and the EIA agency made discussion and the opinion requiring on the main subjects. The public in the construction location expressed their opinions and the ideas. The main subject and the public opinion of the conference are summarized in Table 155.

Table 155: Summary of Public Consultation Meeting Results for the Mohekou Project in the Wuhe County





1. What are the

suggestions and

opinions of the public

in the project

construction?

1) The garden area is in the marsh

land, so it should be solved for the

problem of the draining water

peripheral land which has not taken

over for use, to avoid the

agricultural loss impeded drains in

the flood season.

2) The location selection of the

sewage factory should be

reasonable to, guarantee the

inhabited area not to be affected by

the odor.

3) The public reflected that the

source of drinking water for

peripheral inhabitant in the place of

construction is the ground water at

present, in which the iron content is

high concerning the water quality.

After the surface water works

complete, the inhabitants are

willing to pay the suitable fee to use

the tap water.

4) The conference participants

thought that the project

construction was extremely

important. They requested to

implement the project as soon as

possible and guarantee the project

quality and the completion time, in

order to benefit the local people

earlier.

.1) The opinions were feedbacked to

the construction agency as well as

the designing agency. In the design

proposal and the draining water plan,

to consider the marsh land draining

water problem in garden area, as well

as moving direction of the water

works feedwater line and its

construction plan. To provide the tap

water with safety control for the local

common people eat the greatest

possibility.

2) The odor problem of the

sewage factory has been reflected to

the designing department and the

construction unit., Consider

thoroughly in reducing the odor

influence in the factory site selection

and the factory layout as well as the

sludge processing. Enhance the

protective measures.

3) In the EIA report it was

proposed to the health protection

distance request and reasonable

suggestion for the layout of the factory

district.

2．The public asked

problems about worries

of the adverse

environmental effects

as well as influences

on their own lives

produced in the

1) The construction sewage

processing should be paid attention

to during the project construction

period, in order to avoid the

polluting the peripheral water

environment.


1) Feedback the public’s opinions to

the construction agency and request

them check strictly in the construction

tender process and formulate the

construction plan scientifically. In the

construction proposal, should

consider reducing temporary land





construction stage and

the operation stage of

the project.

transportation and the raising dust

and so on were the main problems

they worried about. Especially

during the road building at the

Mohekou Town, the sand and

crushed stone materials and so on

needed for the road construction

should be laid aside appropriately

to reduce the road occupying and

maintain the road cleanness. The

construction time should avoid

inhabitant's relaxation time. Do the

construction in the civilized way

and formulate the construction plan

to reduce the effects on the

inhabitants’ transportation and

lives.

3) After the implementation of

the project, it is hoped to do

effective collection and processing

for the existing factory production

waste water and the sewage in the

town and to integrate completely

the sewage treatment plant to be

constructed.

occupying and stipulate the transit

route for the construction, complete

the work of supervising and

managing.

2) In the EIA report, do supplement

and consummate measures of the

corresponding construction

management in order to minimize the

adverse construction consequences.

3. Ask the public’s

opinions on the

environmental impact

mitigation measures in

the project

construction.

1) The inhabitant believed that this

project is a project for the people.

They can accept various unavoided

environmental effects in the

construction period and hoped this

project to implement as soon as

possible. But the environmental

mitigation measures should be

implemented actually.


environmental protection measures

proposed in EIA in the environment

management plan, and request the

project agency to implement the

environmental protection measures

and the supervising and managing

system.

2) It should be enhanced in the scene

management in the construction

period and increased in surveillance

and inspection strength.




9.2.4 Expert Consultation

In view of “the Project of City flood prevention and the ecological environment treatment in Bengbu City”, to complete the project EIA work better, the EIA consulted the seven concerning experts coming from the Bengbu water conservancy bureau, Huai River Hydro-Conservancy Committee, the Bengbu Water Conservation Survey Design Institute, the Bengbu Plan and Design Institute, the Huai River Water Resources Conservation Research Institute, the Bengbu Municipal Engineering Administrative Office and the Bengbu Environmental Monitoring Station in the Bengbu City in July, 2007. The experts proposed the precious suggestion on the following questions. The content and the expert advice of the questionnaire were summarized in Table 156.

Table 156: Summary of Expert Consultation Results for BIEIP

Serial numb

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The questionnaire

Main conclusions

1 What’s your

attitude to the

construction of

this project

seeking for World

bank loan for the

city flood

prevention and

ecological

treatment in

Bengbu City?

Expert in various fields expressed their vigorous supports to the construction

of the World Bank project.

1) Bengbu is a city with relatively lag infrastructure and relatively serious

pollution. The local flood prevention facility was weak in this area, which is to the

north of Huai River, to the east of Longzi Lake and to the west of Baligou. It has

been in the status of natural inundation for a long time and there existed certain

hidden danger of flood prevention. On the other hand, the Baligou, the Xijiagou

and the Longzi Lake have not been treated comprehensively and the water

environmental pollution problem is quite serious. Therefore it is extremely

essential to apply for the World Bank loan to carry on the construction of the city

flood prevention and the drainage pumping facility and the environment synthesis

improvement.

2) Bengbu's once application for the world bank loan to use in the Huai River

basin water pollution treatment, has obtained very good social and environmental

benefit. This time the application for the world bank loan project will play a vital

role in realizing the sustainable development of the economy and the society so

as to raise the city infrastructure level and optimize the living environment. It is

believed that with the great effort of municipal government and department

concerned, the application for the world bank loan will obtain a complete success.

2 What’s your

worry and

suggestion on

the construction

of the Mohekou

1) There are water drainage problems such as low topography of garden area and

submergence risks in the flood season. It is suggested to carry on plan designing

and the implementation first in the Mohekou garden area of drainage elimination.

2) There are pollution discharge problems in the enterprises. The pretreatment

does not reach the designed standards and is discharged outside along with rain




Serial numb

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The questionnaire

Main conclusions

Industry Garden?

water in the flood season. It is easy to form the pollution risk to Huai River. It

should be guaranteed that the enterprise environmental protection facility, the

sewage treatment facility in the garden area and the enterprise construction are in

operation simultaneously. At the same time, forbid the heavy pollution enterprise

entering the garden area.

3) As a fine chemical garden area, the ingredients of the sewage and wastewater

in the enterprise are complex and heavily polluted. It should be carried on the

technical proof to the treating process in the wastewater treatment plant and adopt

suitable limiting condition for the chemical enterprises with characteristic

pollutants, therefore to guarantee the enterprise wastewater reach the

pretreatment standards before being discharged into the wastewater treatment

plant. It should be discussed about the technology proposals on the pollution

outlet establishment of the wastewater treatment plant and considered about the

sludge handling in normal operation of the sewage plan at the same time.

4) There are domestic water problems. As the ground water quality is

unsatisfactory and the surface water resources are scarce, there are problems in

the water quality and volume of water supply. The water resources proof and

comparison and selection of the water supply plan to the surface water works

should be carried out. Carry on the full proof on the project technology. The

domestic water may consider the proposal using in-depth ground water.

3 To display the

environment

benefit of the city

rain and sewage

pipe networks of

the basic

construction,

what problem do

you think need

be paid attention

to? What’s your

suggestion?

1) Plan reasonably the rain and sewage pipe networks. It should be considered for

the long-term development requirement for sewage pipe network and designed

carefully. Control the construction of the storm sewer system strictly and makes

the connection well as few as possible. Construction the waste blocks facility at

the exit to cease the organic waste matters to enter the river course which causes

second pollution.

2) In the new city area, the rain and the sewage separate system pipe network

should be built. In the old city area where there is unable to practice the separate

system, the multiple should be reasonably determined in damming the current

during the pipe network construction of combined system.

3) Guarantee the pipe maintenance quality after raining. Complete the lucid and

coherent work before the flood season. The sewage pipe network construction

should be earlier than the sewage treatment plant construction. The covering

scope and the volume of contaminated wastewater of the wastewater gathering

system should satisfy the wastewater treatment scale requirements, avoiding

unsaturated inlet water in the wastewater plant.

4) Establish and perfect the enterprise water draining and the pollution discharge

permit system. Complete the later period track supervising and managing




Serial numb

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The questionnaire

Main conclusions

normalizing. Guarantee the inlet water of the wastewater plant to meet water

quality standards and in good operation.

4 Which aspects

do you think that

main

environment

benefits are

shown in for the

silt clearing

projects of

ditches and

ponds in the city

area and three

counties? What

problems do the

silt clearing

projects have?

Do you have any

suggestions?

Benefits:

1) enhance the ability of accepting the rain and sewage in the ditches, the ponds

and the rivers and improve the self-cleaning ability; 2) improve water quality of the

ditches, the ponds and the rivers as well as the peripheral soil quality, therefore

improve peripheral living environment; 3) increase the ability of draining and

storing floodwater in the ditches, the ponds

Problems existed:

1) handling of clearing silt which may cause second pollution; 2) certain pollution

produced in the construction process; 3) investment of a large amount

Suggestions:

1) There are problems in Bengbu and three counties projects, such as the big

resilience of the ditches and the ponds silt clearing, the insufficient investment.

Therefore it should be done with key prominent, for example, south area of Longzi

Lake needs immediate silt clearing. It is suggested to implement by stages,

complete silts clearing at one time.

2) It is suggested to transform the earth channels into the stone channels to retain

the existing marsh lands as far as possible, and do overall planning and

comprehensive treatment. To marsh lands in the city which is the place originally

for flood stagnating and gathering, should be retained as far as possible to avoid

filling in the pond to make the lands.

3) The silt clearing project should be unified with the environment improvement of

the water body shore and the pollution source treatment.

4) The silts cleared should be deeply buried or covered with the earth as well as

used in the forestations or the scenery making.

5) The handling plan for the cleared silts should be compared and selected with

the multi-plans, for example to fill in buries, the compost, burning down and so on,

to avoid producing second pollution.

5 What do you

think of the main

problems there

are in the silt

clearing project

of Longzi Lake?

1) Longzi Lake area is very big. Therefore the key scope of silt clearing should be

determined first. Then carry on surveys on silt thickness in the silt clearing scope.

Decide the silt depth of clearing on the basis of the analysis of pollutant content

distributions in the silt.

2) The silt clear will have certain influence on the water quality, the water ecology,

the aquaculture, the landscape. Reduce destruction of the original ecology as far

as possible. Determine the silt clearing depth after the scientific analysis. It is




Serial numb

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The questionnaire

Main conclusions

suggested that the silt clearing cannot penetrate the clay layer and t the silt

clearing depth should not more than 50cm.

3) Choose the appropriate way to clear silts. Avoid the deposit pollutant in the

bottom putty releasing once more into the water body and causing the new

pollution during the silt clearing process because of the bottom putty agitation.

Consider the efficiency of the silt clearing at the same time. It is suggested to use

the dredge boat of environment protecting twist-attract type. If the silt depth is

insufficient, it is suggested to pump off the water and use the sludge pump or the

carry-scraper for the construction work regarding to the soil texture situation.

4) For the improvement of the Longzi Lake shore, it is primarily suggested to

excavate the earth or stone, therefore to increase the storage capacity of the flood

prevention, storage and regulating and to enhance the flood control standard of

the Longzi Lake.

5) The cleared silts should be handled reasonably. It is suggested to use the soil

body in the cleared silts to increase the ground elevation of peripheral Longzi Lake

to achieve the effect of flood prevention and waterlogged elimination. But the

stack of the cleared silt must not occupy the storage capacity for flood preventing

and regulating.

6) The handling of massive cleared silts should choose the appropriate season, to

avoid doing construction in the spring or summer and reduce the influence of odor.

It is suggested to choose the suitable place to construct putty field for silt handling.

7) After clearing the silts, enhance the operation management and the

maintenance of the Longzi Lake. The sewage dispersing is forbidden along the

lake. It is also suggested to consider breeding some aquatic plants to absorb

nutritive elements such as nitrogen, phosphorus and so on while richen the

landscape. It is proposed to do massive forestations of planting trees and grasses

along the coast to reduce the soil erosion and the silt situation in the lake body.

6 What main

problems do you

think existed in

the construction

of drainage PSs?

Which opinions

Do you have any

opinions or

suggestion?

Existed problems:

1) In the old city area the equipment in the drainage PSs are obsolete, while in the

new city area the drainage PSs need to be constructed urgently; 2) The draining

ability of the planned PS is not able to meet the design requirements; 3) After the

PS completes, the maintenance management mechanism is not perfect and the

technical ability is insufficient.

Opinions and suggestions

1) Location selection of the PSs should consider the conditions such as

advantageous drainage collection, good geological condition, high

safeguarded electricity conditions as well as transportation convenience.

Simultaneously far away from the crowd compact district.




Serial numb

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The questionnaire

Main conclusions

2) Enhance the PS forestations construction. Use the pumps of advanced

designing, the high effective and energy saving, the safe and reliable type.

Increase the sound absorption function of the PS. Complete the pollution

preventing and controlling measure of the odor and the noise, avoiding disturbing

the people.

3) Prudently choose the waste blocking facility and the waste blocking plan, Pay

enough attention to the anticorrosion of the PS equipments.

4) The construction of drainage PSs is supposed to pay great attention to the

display of combined benefits of the hydraulic engineering, which is to combine

basin drains and the regional drains, and the realize the combination of the

drainage pumping function and the environment benefit.

5) Strengthen the operation management of the PS. Consummate the

management facility and the management structure. Strengthen the routine

maintenance of the equipment. Provide the corresponding technical force. Realize

good operation of the PS.

7 Question 7, What are effects on original Fengxi PS, Fengxixu, the Tianheshengchan dike, Tianhefengbi dike and the flood discharging areas after completing the Tianhe drainage PS?Are there any worries or suggestions?

Influences:1) The construction the Tianhe drainage PS can expand drainage flux. During the water logging time can reduce the Tianhe water level effectively. It is advantageous for Fengxixu drainage PS to eliminate water logging and enhance the flood controlling standard of Fengxixu; 2) In the flood season, the function of the opening of drainage PS can be ignored in increasing the Huai River main current capacity. It will not result in the increase of the water level of the Huai River, therefore it almost will not affect to the Tianheshengchan dike, the Tianhefengbi dike.

Worries and suggestions:1) When the drainage stations begin simultaneously, the influence on the peripheral water level should be considered.2) The operating costs have difficulties in the allocation. It is supposed to be considered by the province government.3) For the Tianhe has been taken as the Bengbu spare water source, reducing the Tianhe water level will have influence on the water-holding capacity.

8What influence

do you think the

project

construction will

have on Huai

River? Do you

have any

suggestions?

Positive influence:

1) There are many advantages in the wide range society public welfare. On the

one hand. It is advantageous to protect the land and the inhabitant safety; on the

other hand it is also advantageous in removing the drainage from Huai River

ahead of time.

2) It has the improvement and the repairing function to the regional partial

ecology. It can improve the environment along the Huai River. The construction of

the wastewater treatment plant may reduce the pollution degree in Bengbu

pollutants discharging to Huai River.

3) It has the vital role in the guarantee of water quality water and water volume of




Serial numb

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The questionnaire

Main conclusions

Bengbu domestic water and the process water.

Negative influence: 1) It will produce short disadvantageous environmental effects such as sewage

and wastewater and so on. in the construction period

2) It will have adverse effects on the water quality in Huai River if sewage

discharges in the enterprise along Huai Garden Area is not controlled strictly.

3) The cleared silt from the ditches and ponds will produce the negative influence

on the surrounding environment with inappropriate handling ;

4) After completion of drainage PSs construction in the urban district and three

counties, the operation of single PS will not have great influence on the main

current of Huai River. But if the stations simultaneously open in the flood season,

it can slightly increase the Huai River peak discharge, which possibly will be able

to have the influence on the overall Huai River flood prevention and create the

flood disaster to shift.

Suggestions: 1) Carry out the environmental protection measures strictly “three at the same

time” way, strengthen the pollution outlet management, cease pollution event to

occur in the Huai River.

2) Strengthen and carry out each environmental protection measure in the

construction period. Reduce the environment adverse effects.

3) Control the construction quality strictly. Cease the hidden danger of the flood

prevention

4) Implement this project as soon as possible. Carry on the project with the

principle of the urban district first, then three counties, the main current first, then

the branches, paying equal attention to pipe network transformation in the old city

area and pipe network construction in the new town area.

5) Coordinate various departments and reasonably plan the working procedure

and the scale of the city draining water pipe network and the drainage PS

construction.

Once there is a possibility to have influence on the bank of Huai River, appraisal

must be carried on for the circle dike flood prevention.

The EIA agency carried on public participation surveys at various stages in the EIA of the Bengbu World Bank Loan Project. The main conclusion and the achievement are shown in Table 157.

Table 157: Summary of Public Participation for BIEIP




NATURE OF

PUBLIC

PARTICIPATION

WHEN WHERE HOW BY WHOM WITH WHOM MAJOR CONCLUSIONS

Sub-project 1 Tianhe Flood Control Project

1st round

public

participation

2007.1

Changqing

Township,

Qinji Town

in Yuhui

District

Interview on site

and distribution

of questionnaire

NCMDI,

Bengbu

Municipal

Water

Resource

Bureau

Yuhui

District

The project construction is widely

supported by the interviewed

people.

2nd round

public

participation

2007.7 Fengcheng

village,

Qiancheng

Village and

Huacheng

village of

Qinji Town

Qinji Town - The public investigation shows

that the PS construction is

widely supported due to the

severe flooding problems in this

area;

- The public worried about the

water taking from the Tianhe

Lake will impact the water use

for agricultural production in dry

season;

- The main adverse effects in the

construction period are the

transportation impacts and the

land occupation.




NATURE OF

PUBLIC

PARTICIPATION


2007．7Bengbu

Municipality

Expert

consultation

Municipal

PMO

Seven

experts of

the related

aspects

- The experts strongly supports

the project construction;

- The PS location should be far

away from the population dense

area and for the easy collection

of flood. The proper measures

should be taken to prevent odor

and noise. And the Prudently

choose the waste blocking

facilities and the waste blocking

plan should be cautiously

chosen;

- The Tianhe PS could effectively

lower the water level of the

Tianhe Lake. However, its

impact on the main Huai River in

the flood season could be

ignored; however, its impacts on

the surrounding water bodies

should be considered when it is

opened.

Sub-project 2 Longzi Lake Flood Control and Environmental Improvement Project

1st round

public

participation

2007.1 Villages

around

Longzi lake

Interview on site

and distribution

of

questionnaire

NCMDI,

Jingfa

District

Project-

affected

people

All the investigated people support

the desilting and storm drainage PS

for Longzi Lake.




NATURE OF

PUBLIC

PARTICIPATION


2nd round

public

participation

2007.7 The

villages of

Shannan,

Qiuqiao,

Jiguo, Junli

and Dalu

around

Longzi lake

Interview on site

and distribution

of questionnaire

Project-

affected

people

- All the investigated people

support the project. 60% of the

investigated thought it was

extremely necessary to desilt the

Longzi Lake;

- The major environmental

impacts by construction include

the flying dust, transportation

and land occupation. The

investigated public hopes to

shorten the construction period

and implement the mitigation

measures.




NATURE OF

PUBLIC

PARTICIPATION


2007.7 BengbuExpert

consultation

Municipal

PMO

Seven

experts of

the related

aspects

- The experts strongly support the

project construction;

- The desilting investment is huge.

It is suggested to plan for the

final targets but implement by

phase stages;

- Decide the desilting depth based

on the monitoring results, which

should be within 50cm. And the

desilting method should be

selected according to the soil

nature;

- The desilted sediment should be

properly disposed. The soil

could be used to raise the

ground elevation around the

Longzi Lake;

- The proper desilting season

should be selected. The spring

and summer should be avoided

to reduce the odor impacts;

- The management after desilting

should be strengthened to

prohibit the wastewater

discharge around the lake.

Sub-project 3 Urban (South of Huai River) Environmental Infrastructure Improvement Project

1st public

participation

2007.1 Old urban

area, the

Gaoxin

District

Interview on site

and distribution

of questionnaire

NCMDI,

Bengbu

constructio

n

Project-

affected

people

The project construction is widely

supported by the interviewed

people.




NATURE OF

PUBLIC

PARTICIPATION


commissio

n, Gaoxin

District and

Jingfa

District

2nd public

participation

2007.7

Old urban

area, Jingfa

District and

Gaoxin

District

Interview on site

and distribution

of questionnaire

Project-

affected

people

- The surveyors support the

project. They think it is needed

urgently to consummate the

municipal drainage system

construction

- The public think to construct

- rain and sewage pipe network in

the Longzi Lake District is good

for the improvement of the

Longzi Lake water environment.

2007.7 BengbuExpert

consultation

Municipal

PMO

Seven

experts of

the related

aspects



- The wastewater and stormwate

network should be rationally

planned. The separate system

should be adopted for the new

urban area. The management

for the storm network should be

ensured, and the sewage

network should be constructed

before the WWTP;

- Equal attention should be paid to

the network rehabilitation in the

old urban area and the network

construction in the new urban

area.

Sub-project 4 Xijiagou and Baligou Environment Improvement Project

1st public

participation

2007.1 Gaoxin

District

Interview on site

and distribution

of

questionnaire

NCMDI,

Gaoxin

District

Affected

people in

Gaoxin

District

The investigated people generally

support the desilting and

embankment of Xijiagou and

Baligou canals.




NATURE OF

PUBLIC

PARTICIPATION


2nd public

participation

2007.7Gaoxin

District

Interview on site

and distribution

of questionnaire

Affected

people in

Gaoxin

District

- The project is widely supported

by the investigated people;

- The public is very unsatisfied

with the surrounding

environment of Xijiagou and

Baligou canals;

- The major impacts during the

construction are transportation

and land occupation.

2007.7 BengbuExpert

consultation

Municipal

PMO

Seven

experts of

the related

aspects

- The project construction is

strongly supported by the

experts;

- The silt should be properly

disposed by deep burying on

site or using for greening.

Sub-project 5 Huaishang District Flood Control and Urban Environmental Infrastructure Improvement Project

1st public

participation2007.1

Villages of

Xiaobengb

u

Shuangtan

g, Wu’an,

Jintai and

Chentai in

Huaishang

District

Interview on site

and distribution

of

questionnaire

NCMDI,

Huaishang

District

PMO

Affected

people in

Huaishang

District

The investigated people generally support the project construction.

2nd public

participation

2007.7 Interview on site

and distribution

of questionnaire

Affected

people in

the

affected

villages

- The investigated people support

the project construction, thinking

the local infrastructure requires

completion;

- The public suggests to minimize

the farmland occupation;

- The impacts include noise, flying

dust, temporary land occupation

and transportation.




NATURE OF

PUBLIC

PARTICIPATION


2007.7 BengbuExpert

consultation

Municipal

PMO

Seven

experts of

the related

aspects




properly disposed;

- Odor and noise prevention

measures should be taken for

PS projects;

- The environmental protection

“three meantime” policy should

be implemented;

- The flood control assessment for

surrounding dyke should be

carried out.

Sub-project 6 Guzhen County Integrated Environment Improvement Project

1st public

participation2007.4

Villages in

Chengguan

Town of

Guzhen

Interview on site

and distribution

of

questionnaire

NCMDI,

Guzhen

Project

Office

Affected

people in

villages in

Chengguan

Town of

Guzhen



and distribution

of questionnaire



- The public considers that the

sanitation conditions for the

ambient environment are very

poor, and the desilting is

urgently needed; The

construction of storm drainage

PS is needed to alleviate the

severe floods in the flood

season.




NATURE OF

PUBLIC

PARTICIPATION


2007.7 BengbuExpert

consultation

Municipal

PMO

Seven

experts of

the related

aspects




properly disposed;

- The PS location should consider

the easy collection of the floods

and be far away from the

population dense area;

- Waste interception facilities and

plan should be carefully

selected, and the odor and noise

prevention measures should be

taken for PS projects.

2007.7.9

Meeting

room of

Guzhen

County

Governmen

t

Public

consultation

meeting

Guzhen

DRC World

Bank

Project

Leading

Group,

NCMDI

Affected

people

from the

villages of

Dalou,

Xiaolou,

Laojie, Qili,

Nanchenxu

and

Qizhuang,

and

relevant

personnels

from

Guzhen

Constructio

n Bureau

and Water

Resource

Bureau

- The consulted people hope to

complete the drainage system,

to desilt the drainage ponds and

ditches as soon as possible, and

to strengthen the storm

management;

- The temporary passways should

be constructed and the roads

inside the villages should not be

destroyed;

- The environmental mitigation

measures should be strictly

implemented;

- The power supply department

should guarantee the normal

operation of the drainage PSs.

Sub-project 7 Huaiyuan County Integrated Environment Improvement Project




NATURE OF

PUBLIC

PARTICIPATION


1st public

participation2007.1

Chengguan

Town of

Huaiyuan

County

Interview on site

and distribution

of

questionnaire

World Bank

Project

Leading

Group,

NCMDI

Affected

people in

Chengguan

Town of

Huaiyuan


2nd public

participation

2007.7

Interview on site

and distribution

of questionnaire

- The investigated people show

their positive support to the PS

construction and the desilting of

flood discharge ditches;

- The environmental sanitation

conditions around the project

site is very poor, urgently

requiring comprehensive

rehabilitation;

- Notification should be made

before construction, and


measures should be taken for

the construction site.

2007.7 BengbuExpert

consultation

Municipal

PMO

Seven

experts of

the related

aspects




properly disposed;

- The PS location should consider

the easy collection of the floods

and be far away from the

population dense area;

- Waste interception facilities and

plan should be carefully

selected, and the odor and noise

prevention measures should be

taken for PS projects.




NATURE OF

PUBLIC

PARTICIPATION


2007.7.9

Meeting

room of

Huaiyuan

County

DRC

Public

consultation

meeting

World Bank

Project

Leading

Group,

NCMDI

Residents

of

Chengguan

Town,

affected

people in

relevant

villages,

and staffs

of

Traditional

Chinese

Institute

- The attendees widely concern

about the sanitation

maintenance and management

after the ditch and pond

desilting;

- It is suggested to have some

solid waste dump and collection

points in the residential areas

around the flood discharge

ditches and the hilly pond, which

should be timely cleaned up and

transported by the


department.

Sub-project 8 Wuhe Mohekou Integrated Environment Improvement Project

1st public

participation2007.1

Affected

villages

around the

Mohekou

Industrial

Park,

Sanpu

Village

Interview on site

and distribution

of

questionnaire

Wuhe

County

Project

Office,

Administrati

on

Committee

of the park,

NCMDI

Affected

people

from the

villages


2nd public

participation


and distribution

of questionnaire



- The investigated people concern

most about the guarantee of

water supply quality for the

WTP, and show their willingness

to use the water supply from the

WTP;

- It is considered that the water

supply, wastewater and road

facilities are urgently required.




NATURE OF

PUBLIC

PARTICIPATION


2007.7 BengbuExpert

consultation

Municipal

PMO

Seven

experts of

the related

aspects



- The low elevation of the park

has water logging problem;

There is problem whether the

industrial discharge in the park

could meet the standard;

- The technical justification is

required for the wastewater

treatment process, and the

limitation conditions should be

set for chemical industries;

- The water resource justification

and water supply option analysis

are required for the WTP.

2007.7.9

Meeting

room of

Mohekou

Industrial

Park

Administrati

on

Committee

Public

consultation

meeting

Administrati

on

Committee

of the park,

NCMDI

Villagers

from the

affected

villages of

Mohekou,

Tuanjie,

Sanpu,

Tangchen,

Lijiawa and

Yuanji

- The wastewater discharge of

unacquired land should be

considered in the project; The

WWTP location should be

reasonable to prevent the odor

impacts on the residential area;

the residents are willing to pay

for the tap water; The attendees

hope all the industrial and

domestic wastewater should be

collected and treated by the

proposed WWTP.




10Summary of EMPs

10.1 Environmental Administrative Authority and Duties

Relevant organizations for the project’s environmental protection work can be classified into: administrative authority, supervision authority and monitoring authority and the corresponding duties are as follows: Administrative Authority

The managerial relationship between administrative authority and this project refers to the following table.

Table 158: Managerial Relationship between Administrative Authority and Project

No

Project Name Project DescriptionAdministrative

Authority

1

Tianhe Lake

Flood

Prevention

Station

Tianhe Lake Flood Prevention Station Project

Bengbu Municipal

Bureau of Water

Resources

2Longzi River

Project

Slope protection and the vegetation along the bank of

the Longzi River,

Bengbu Jingfa

District

Administration

Longzi River Flood Prevention PS Project

Bengbu Municipal

Bureau of Water

Resources

Cao Mountain

Bengbu Jingfa

District

Administration

3 Xijiagou Project

Baligou –Donghai Road to east side of riverway,

bridge section of Qingjia Mountain

Bengbu High tech

Development Zone

other areas from Tushan Road Bridge to Qingjia

Mountain bridge section Yuhui District




No


Authority

Changzhong Road to Yanshan Road

PLA Vehicle

Management

Institute

South of Qingshan Road Bengbu High tech

Development Zone

4

Urban Drainage

and Flood

Prevention

Project

3 Flood Prevention Stations in Xinchuantang and

Nanshijia, as well as urban rainfall and sewage

pipeline project

Bengbu

Construction

Commission

The project of rainfall pipeline network and sewage

pipeline network in Jingfa District

Bengbu Jingfa

District

Administration

Rainfall pipe network in High-tech Development ZoneBengbu High tech

Development Zone

Rainfall pipe network and Elevated PS at east bank of

Longzi River

Longzi River Area

of Bengbu City

5Huaishang

District Project

Wuxiao Street Flood Prevention PS

Bengbu Municipal

Bureau of Water

Resources

Small Bengbu, Wangxiaogou Flood Prevention

Station, Huaibei Road and surrounding environment

treatment, construction for 21 roads within the city, as

well as sewage pipeline of Daqing North Road

Huaishang District

Government

6 Guzhen County

Project

Sewage pipeline construction of Chengguan Town,

slope protection and afforestation of south bank of the

Sanba River, ditch and pond regulation within the

town and slope protection afforestation

Construction

Engineering Bureau

of Guzhen County

Flood prevention ditch., drainage ditch desilting,

banks protection and afforestation, drainage station

and culvert gate project, bridge works and levee flood

control road works

Water Resources

Bureau of Guzhen

County




No


Authority

Closure works Chengxi inflowing river pollution

discharge outlet

Environmental

Protection Bureau

of Guzhen County

7Wuhe County

Project

Sanpu ditch desilting and the Sanpu River Flood

Prevention PS Project

Water Resources

Bureau of Wuhe

County

Construction of Surface Water Plant and Sewage

Treatment Plant

Urban Construction

Commission of

Wuhe County

Mohekou Town and road works in the park Mohekou Park

8Huiyuan County

Project

Flood Prevention Ditch Project and Flood Prevention

PS Project

Water Resources

Bureau of Huiyuan

County

Drainage Pipeline Network

Construction

Bureau of Huiyuan

County

Rainfall Pipeline Network for grain and oil processing

area and supporting roads

Chengguan Town of

Huiyuan County

Main duties for Administrative Authority are as follows:

1) Implement thoroughly environment protection regulations and policies issued by National Departments and Water Source Department

2) Implement environment management on the project during Construction Period and operating period.

3) Set up “Environment Protection Management Office” under each Engineering Construction Headquarters in the period of construction and appoint 2-3 experienced environment protection management staff, and the proposed Environment Relieving Measures in this report implemented by the contractors of supervision project.

4) Appoint environment monitoring authority or relevant departments to make environmental supervision, monitoring and environment protection acceptance on the project.

Supervision Authority




Bengbu City Environmental Protection Bureau receives job instructions from Anhui Provincial Environmental Protection Bureau and supervise construction unit to carry out environmental management plan and implement relevant regulations and standards concerning environmental management .In addition, Bengbu Municipal Environmental Protection Bureau also coordinates the departments to do a good job in environmental Protection and is responsible for supervision and inspection on the construction, implementation and operation of environmental Protection facilities about the projects within administrative jurisdictional area. Monitoring Authority

According to relevant regulations concerning environmental management on construction project, the project shall implement environmental monitoring system. Independent works of each subproject should appoint two monitors, who are responsible for fully supervising, inspecting, managing and controlling specialized departments in charge of the implementation of environmental protection projects and the contractors of engineering projects in charge of environmental protection work during construction period and are answerable to inspect and supervise implementation conditions of environmental protection measures carried out by construction unit pursuant to monitoring plan contents in construction period. After finishing the construction, those monitors should report monitoring authority and project owner to accept environmental protection conditions about the construction and sign Work Completion Certificate as well as Works Hand-Over Document.

10.2 Environmental Management Supervision Plan

10.2.1 Objectives of Environmental Management Supervision Plan

Through drawing up scientific and effective environmental management plan, the construction and operation of this project are able to meet the idea of “Three Simultaneities” on national economic and environmental construction, that is, simultaneous plan, simultaneous implementation, and simultaneous development. And this plan provides the basis for the designed implementation of environmental protection measures and the supervision carried out by environmental protection departments to the works.

10.2.2 Contents of Environmental Management Supervision Plan

- Construction period




1) Shall supervise and carry out environmental protection measures in construction period in order to make them implemented effectively;

2) When the construction is made on heavily-trafficked road section, it is required to implement transport impact relieving measures regulated by this report in order to abate traffic adverse impact and coordinate traffic congestion accidents caused by the construction of this project;

3) Shall control the plants destruction and soil erosion caused by this construction, recover temporary land occupied for the construction and restore the vegetation;

4) Shall accept the public’s complaint on construction disturbance events and deal with coordinately construction disturbance to the life and work of the residents and the units along the road;

5) Shall control construction operating area and regulate the behavior of the builders in order to man –made destruction on ecology and vegetation out of construction site.

6) If underground cultural relics are found in the process of engineering construction, shall stop construction and organize personnel to protect the site, and then report cultural relics department so as to avoid the accidents of cultural relic destruction.

- Operation period

1) After the construction is finished, shall strengthen the supervision and management on ecological environment impacted by construction project concerning the waters, soil, vegetation, atmosphere and noise and sensitive points of surrounding environments as well as the protection of environmental protection targets, and effective measures should be adopted to prevent the destruction of surface soil and vegetation and pollution of ground water and surface waters, in addition, the measures are also used to stop the behavior form destroying acoustic environment of environmental sensitive points, such as the residents area and hospital, and atmospheric environment;

2) Environmental Monitoring authority is regularly entrusted to monitor the environment under operation period;

3) Shall supervise effective fulfillment of the environmental protection measure under operation period;

4) Shall thoroughly implement national and local environmental protection regulations, laws and standards;




5) Advanced techniques and environmental protection experience should be widely applied; at the same time, shall organize relevant trainings on special skills of environmental protection for the management staff, who take part in the operation of this project.

10.3 Environmental Monitoring Plan

10.3.1 Environmental Monitoring Proposal

The purpose of regulating Environmental Monitoring Proposal is to supervise the implementation of all environmental protection measures and adjust the measures in light of monitoring results; meanwhile, the plan provides the basis for implementation time and plan on environmental measures. The principle to regulate environmental monitoring plan is to predicate what main environmental impact will be brought under construction and operation period.

10.3.2 Environmental Monitoring Authority

Environmental monitoring work of this project can entrust Bengbu Municipal Environmental Monitoring Station or the Units with monitoring qualification to undertake. Before the commencement of the construction, Construction Unit shall sign Environmental Monitoring Agreement on Construction Period with Bengbu Municipal Environmental Monitoring Station or the Units with monitoring qualification; in addition, Environmental Monitoring Agreement on Operation Period shall be signed with Monitoring Station before the project is delivered and operated.

10.3.3 Environmental Monitoring Plan

Environmental Monitoring Plans for each subproject are summarized in the following table.

All the monitoring data should be timely processed and evaluated, and then engineering measures should be adjusted according to evaluation results. In particular, the quality of wastewater discharged into Huai River, Tianhe Lake, Longzi Lake, the Guo River, Beifei River, Mochongyin River, Huaihongxin River and other rivers, should be closely monitored with proper mitigation measures taken in order to guarantee the up-to-standard wastewater discharge. Database Management System and Quality Auditing System will be set up for the monitoring data. The audited data are centralizedly kept for the convenience of future inquiry and check.




Table 159 : Summary of BIEIP EMP

Potential

Impact

Mitigation Measures Implementation

Schedule

Implementation

Agency

Supervision

Agency

Monitoring

Indicators

Monitoring

Frequency

EMP

Budget

(yuan)

Sub-project 1 Tianhe Flood Control Project

Flying dust

1) Setup the construction cofferdam on the site, periodically

spray water and clean the site;

2) Stack the covers in the goods shed;

3) Use sealed tankers for the transportation of powder material

and the desilted sludge after drying;

4) Use the commercial concrete or prefabricated components

for the implementation on site.

During

construction

period

Contractor(s)

Municipal

Water

Resource

Bureau,

Municipal

EPB

TSPTwice during the

construction period

140,000

Noise1) Setup the construction cofferdam around the site;

2) Use the low-noise equipments.Leq(A)

Twice during the

peak construction

period at two

points, totally 4

point*times

Wastewate

r

1) Construct the drain and the settling tank on site;

2) Send the slurry wastewater to the designated site for drying

3) Collect the domestic wastewater and pump it to the

wastewater after the treatment of septic tank.




Potential

Impact


Schedule

Implementation

Agency

Supervision

Agency

Monitoring

Indicators

Monitoring

Frequency

EMP

Budget

(yuan)

Solid

waste

1) Use sealed tankers for the transportation of desilted sludge

after drying;

2) Lay impermeable layer on the bottom of the sludge dump

sites before dumping.

Heavy metals such

as Cd, Cr, Cu, Hg,

Pb, As in the silt

Once before soil

coverage and after

desilting

PS noise1) Construct green belt for the site; 2) Take sound insulation

measures for the PS; 3) Reduce the equipment noise.During operation

period

Municipal

Water

Resource

Bureau

Municipal

EPB— — 24,000

Screening

s

1) Collect the screenings and transport it by the environmental

sanitation department after removing the leachate.

Total 164,000

Sub-project 2 Longzi Lake Flood Control and Environment Improvement Project

Flying dust 1 ） Setup the construction cofferdam on the site, periodically


2 ） Stack the covers in the goods shed.

During

construction

period

Contractor(s) Municipal

Water

Resource

TSP at the site Once per year

during construction

317,000




Potential

Impact


Schedule

Implementation

Agency

Supervision

Agency

Monitoring

Indicators

Monitoring

Frequency

EMP

Budget

(yuan)

Bureau,

Municipal

EPB

Odor1) Send the silt to the dump sites by sludge pipes;

2) Transport the dried silt with the sealed tankers.

For silt dump site:

H2S, NH3

Once before

construction;

Once during

dumping

Noise

1) Setup the construction cofferdam around the site;

2) Use the low-noise equipments;

3) No construction is allowed at night.

Leq(A)

Twice during

construction at one

point, totally

2point*times

Wastewate

r

1) Implement the project during the dry season;

2) Increase the settling time of the residual wastewater from

the dump sites with the addition of chemicals to meet the

discharge standard.

For residual

wastewater from

dump sites:

SS, TN, TP

Twice during

construction at 8

points

Silt 1) Transport the silt to the designated dump site.For silt: Cd, As, Cu

Hg, Pb, Cr

Once before the

filling of silt at two

points




Potential

Impact


Schedule

Implementation

Agency

Supervision

Agency

Monitoring

Indicators

Monitoring

Frequency

EMP

Budget

(yuan)

PS noise 1) Install double-layer doors and windows for the PS with the

greenbelt composed of arbor and frutex around the site.During operation

period

Municipal

Water

Resource

Bureau

Municipal

EPB

Leq(A)Once a year at two

points

138,000

PS

screenings


sanitation department after removing the leachate.

Total 455,000

Sub-project 3 Urban (South of Huai River) Environmental Infrastructure Improvement Project

Flying dust 1) Setup the construction cofferdam on the site, periodically


2) Stack the covers in the goods shed, and use sealed tankers

for the transportation of powder material;


for the construction on site.

During

construction

period


Construction

Commission,

HTZ,

Longzi Lake

TSP Once at one point

during

construction, totally

1 point*time

327,000




Potential

Impact


Schedule

Implementation

Agency

Supervision

Agency

Monitoring

Indicators

Monitoring

Frequency

EMP

Budget

(yuan)

Dis.,

EDD

Noise




Leq

At 12 o’clock, twice

during construction

at twelve points,

totally 24

points*times.

Wastewate

r from the

site

1) Discharge the wastewater from the site into the municipal

wastewater network after settlement;

2) Pump the collected domestic wastewater to the WWTP after

the treatment of septic tanks.

Solid

waste

1) Periodically clear and transport the engineering waste

residues by the environmental sanitation department.

Domestic

wastewate

r from PS

1) Discharge the wastewater into the sewage network after the

treatment of septic tanks and send it to the WWTP for

treatment.

During operation

period

Municipal

Construction

Commission,

HTZ,

Longzi Lake

153,000


greenbelt composed of arbor and frutex around the site.

Leq Once during

operation period at

seven points




Potential

Impact


Schedule

Implementation

Agency

Supervision

Agency

Monitoring

Indicators

Monitoring

Frequency

EMP

Budget

(yuan)

Dis.,

EDD

PS

screenings

, domestic

solid waste


sanitation department after removing the leachate;

2) Timely clear the domestic solid waste

Total 480,000

Sub-project 4 Xijiagou & Baligou Environment Improvement Project

Flying dust

from

constructio

n



2) Use sealed tankers for the transportation of the silt.

During

construction

period


Construction

Commission,

HTZ

TSP

Once during

construction,

respectively one

point for Baligou

and Xijiagou

338,000

Odor from

the silt

1) Send the silt to the dump sites by sludge pipes;

2) Transport the dried silt with the sealed tankers.

Desilting site: H2S,

NH3

Once during

construction,

respectively two

points for Baligou

and Xijiagou




Potential

Impact


Schedule

Implementation

Agency

Supervision

Agency

Monitoring

Indicators

Monitoring

Frequency

EMP

Budget

(yuan)


2) Use the low-noise equipments.Leq

Twice during

construction,

respectively two

points for Baligou

and Xijiagou.

Wastewate

r from the

site





Solid

waste

1) Timely clear the domestic solid waste;

2) Reuse the spoil soil from construction for the embankment

of Baligou Canal, and use the silt as the back fills for the low-

lying area downstream of Baligou Canal.

Silt:

Cd 、 As、 Cu,

Hg 、 Pb、 Cr

Sampled at four

points, once before

the desilting as the

baseline

During operation

period

Municipal

Construction

Commission,

HTZ

Municipal

Construction

Commission,

Municipal

EPB

132,000




Potential

Impact


Schedule

Implementation

Agency

Supervision

Agency

Monitoring

Indicators

Monitoring

Frequency

EMP

Budget

(yuan)

Total 470,000

Sub-project 5 Huaishang District Flood Control and Urban Environmental Infrastructure Improvement Project

Flying dust







During

construction

period

Contractor(s) Huaishang

District

Construction

Commission;

Municipal

EPB

TSPOnce a year at four

points

363,000

Noise




Leq

Once during

construction at 4

points, totally 4

point*times.

Wastewate

r from the

site








Potential

Impact


Schedule

Implementation

Agency

Supervision

Agency

Monitoring

Indicators

Monitoring

Frequency

EMP

Budget

(yuan)

Solid

waste

1) Periodically clear and transport the domestic solid waste by

the environmental sanitation department;

2) Use the engineering spoil soil and the silt as the back fills

for the borrow pit south of the North Huai River Dyke.

For the silt: Cd, As,

Cu,

Hg, Pb, Cr

Once before

desilting at totally

three points as the

baseline.

Domestic

wastewate

r from PS

1 ） Discharge the wastewater to the WWTP through the

sewage network after the treatment of septic tanks.

During operation

period

Huaishang

District

Construction

Commission

Municipal

EPB144,000

PS noise1) Install double-layer doors and windows for the PS with the

greenbelt composed of arbor and frutex around the site.Leq

Twice a year at two

points

PS

screenings

, domestic

solid waste




Total 507,000

Sub-project 6 Guzhen County Integrated Environment Improvement Project




Potential

Impact


Schedule

Implementation

Agency

Supervision

Agency

Monitoring

Indicators

Monitoring

Frequency

EMP

Budget

(yuan)

Flying dust







During

construction

period

Contractor(s)

Guzhen

County

Water

Resource

Bureau

Guzhen

County

Construction

Commission

TSP

Once per year

during construction

at two points

526,000

Noise



3) No construction is allowed at night for the urban area.

Leq

Twice during

construction at six

points, totally 12

point*times

Wastewate

r from the

site





Solid

waste


residue by the environmental sanitation department;

2) Use the silt as the back fills for the surrounding low-lying

area.


Cu,

Hg, Pb, Cr

Once before

desilting at two

points as the

baseline.




Potential

Impact


Schedule

Implementation

Agency

Supervision

Agency

Monitoring

Indicators

Monitoring

Frequency

EMP

Budget

(yuan)

Domestic

wastewate

r from PS



During operation

period

County Water

Resource

Bureau, County

Construction

Bureau

County EPB 137,000PS noise

1) Install double-layer doors and windows for the PS with the

greenbelt composed of arbor and frutex around the site.Leq

Once a year at five

points

PS

screenings

, domestic

solid waste




Total 663,000

Sub-project 7 Huaiyuan County Integrated Environment Improvement Project

Flying dust 1) Setup the construction cofferdam on the site, periodically






During

construction

period

Contractor(s) County

Construction

Bureau,

County

Water

TSP Once during

construction, totally

once point*time

409,000




Potential

Impact


Schedule

Implementation

Agency

Supervision

Agency

Monitoring

Indicators

Monitoring

Frequency

EMP

Budget

(yuan)

Resource

Bureau

Noise



3) No construction is allowed at night for the urban area.

Leq

Twice during

construction at two

points, totally four

point*times

Wastewate

r from the

site





Solid

waste


residue by the environmental sanitation department.


Cu,

Hg, Pb, Cr

Once before

desilting at one

point as the

baseline.

Domestic

wastewate

r from PS



During operation

period

County

Construction

Bureau, County

Water

County EPB 134,000



Leq Once a year at two

points




Potential

Impact


Schedule

Implementation

Agency

Supervision

Agency

Monitoring

Indicators

Monitoring

Frequency

EMP

Budget

(yuan)

Resource

Bureau

PS

screenings

, domestic

solid waste




Total 543,000

Sub-project 8 Wuhe County Mohekou Integrated Environment Improvement Project

Flying dust




for the transportation of powder material and sludge;



During

construction

period

Contractor(s) Administrativ

e

Commission

of the

Industrial

Zone

TSP

Once during

construction at 4

points, totally 4

point*times

388,000

Odor from

the sludge

1 ） Transport the dried silt with sealed tankers;

2 ） Avoid the summer for construction.

For the desilting

site: H2S, NH3

Respectively one

point for the two

desilted canals,

once during

construction




Potential

Impact


Schedule

Implementation

Agency

Supervision

Agency

Monitoring

Indicators

Monitoring

Frequency

EMP

Budget

(yuan)


2) Use the low-noise equipments .Leq

Once during

construction at four

points

Wastewate

r from the

site

1) Reuse the wastewater to the construction site after settling,

discharge a small amount of the wastewater into the Beifei

River;

2) The domestic wastewater is treated by the septic tank and

the centralized treatment station to meet the comprehensive

Class II discharge standard before being discharge into the

Beifei River;

3) The slurry wastewater is transmitted with the special

pipelines to the place designated by the municipal department

for drying, and it is strictly forbidden to be discharge into the

water bodies and the farmland.

Solid

waste

1) The cleared spoil soil and the dried silt are used as back fills

for the low-lying area around the site;


residue by the environmental sanitation department.


Cu, Hg, Pb, Cr

Once before

desilting at points

as the baseline




Potential

Impact


Schedule

Implementation

Agency

Supervision

Agency

Monitoring

Indicators

Monitoring

Frequency

EMP

Budget

(yuan)

Odor 1) Leave 150m sanitation protection distance for the WWTP.

During operation

period

Administrative

Commission of

the Industrial

Zone

Municipal

EPB,

Provincial

EPB

For sludge dump

site of the WWTP:

H2S, NH3

Once for the

hottest period in

summer at one

point

256,000

Wastewate

r 1) Monitor the influent and effluent quality of the WWTPpH, SS, NH3-N,

CODcr, BOD

Twice every year at

two points

2) Monitor the influent and effluent quality of the WTP.

pH, turbidity, NH3-

N, total coliform

group, petroleum,

CODMn, TDS

Twice a year at two

points, totally four

point*times

3) The domestic wastewater from the WTP and the PS is

transported with the special tankers to the WWTP of the

industrial zone;

4) The domestic wastewater from the WWTP is discharged

into the WWTP through the sewage network within the plant.




Potential

Impact


Schedule

Implementation

Agency

Supervision

Agency

Monitoring

Indicators

Monitoring

Frequency

EMP

Budget

(yuan)

PS noise

1) Implement the enclosure and soundproof treatment for the

equipment rooms of the WTP and the WWTP with the

construction of greenbelts;

2) Install double-layer doors and windows for the PS with the


LeqOnce a year at one

point near the PS

Solid

waste

1) Transport the dewatered sludge from the WWTP to the solid

waste sanitary landfill site for disposal.

For sludge from the

WWTP:

Cd, As, Cu, Hg,

Pb, Cr

Once during

operation at one

point

2) Reuse the dried sludge from the WTP as the back fills for

the surrounding low-lying area

For sludge from the

WTP: Cd, As, Cu,

Hg, Pb, Cr

Once during

operation at one

point

3) Collect the screenings from the PS, after the removal the

leachate, send it together with the domestic solid waste for

disposal.

Total 644,000




11Resettlement and Social Impacts

11.1 RAP

11.1.1 Resettlement Proposal

Foundation

The preparation of the resettlement action plan of this project and the implementation of future resettlement work shall be made strictly in accordance with the pertinent requirements of World Bank Business Guideline OP4.12. The resettlement work shall be executed strictly according to the resettlement compensation standard stipulated in the foregoing action plan and prior consent of the World Bank is required if there is any change during the resettlement.

Principle

To optimize the project design, keep away from the area with dense population or multi-storey, high-rise and permanent buildings, reduce the area that is influenced by land expropriation and house removal to the minimum, and minimize the number of involuntary resettlement is the principle this resettlement observes. All the involuntary resettlement will be included into the project construction, providing sufficient capital for the migrants and making them benefit from the project. The migrants will receive help during the migration-relocation as well as from the resettlement area. For the influenced households, their living environment will be improved and the resettlement area will be equipped with complete facilities for life, providing with convenient traffic and comfortable environment. Minimize the losses that are incurred to the enterprises and institutions by the land expropriation and housing removal, for instance, if the housing removal is inevitable, the compensation for the loss of suspension should be made, and the enterprises and institutions should be properly treated so that the production and operation can be resumed soon. The migrants should be encouraged to participate in the preparation of resettlement plan and the implementation of the resettlement, and the wills of the migrants should be fully respected. The objective of the target police is to avoid the negative influences brought by the land expropriation and housing removal to the most. For the property of the people who are affected by the negative influences, compensation will be made according to the replacement price. The resettlement objective of this project is to ensure the migrants can be compensated for all the losses they suffer from, can be properly resettled and well recover from the loss, enable them




to share and enjoy the benefits of the project, offer them subsidy for their temporary difficulties to ensure their income and living standard as well as the production and profiting ability of the enterprises can be improved or at least be resumed to the higher level before the migration-relocation or the start of the project.




Organization

Bengbu City established the Leading group office of urban construction environmental protection project the World Bank loan for, responsible for providing guidance to the preparation of resettlement plan of environment control project of Bengbu, the World Bank loaning city, the implementation of land expropriation and housing removal and contacting with the World Bank as well.

11.1.2 Compensation Standard

Where the housing removal and land expropriation is made at the state owned and collectively-owned land within the planning scope of this project and it is required that the dismantled and the unit whose land is expropriated should be compensated and resettled, the compensation standard should be prepared and made in accordance with the Land Management Law of the People's Republic of China, Regulation on the Dismantlement of Urban Housing, relevant laws and regulations, Operational Polices for Involuntary Resettlement OP4.12 of the World Bank and the local and actual situation of the project.

11.1.3 Public Participation

Since the public participation did not make the majority citizen have a clear and complete understanding and knowledge of the project construction, the housing removal policy and even the rights range when their legal rights and interests are infringed during the housing removal, after the plan is reviewed and approved by the World Bank, the publicity and propaganda of the policy should be strengthened, utilizing such means as television, newspaper, and internet to the most to introduce the project and relevant policies of land expropriating and housing removal, and spreading the information book of resettlement after the project assessment and prior to the moving to inform the resettlement of the project situation, land expropriation and housing removal policies, relevant laws and regulations, and the approach for appeal.

During the preparation of the resettlement plan and the implementation, the mechanism of appealing is established. After the resettlement institutions of all levels have timely discussion and treatment, all the resettlement institutions will be free for receiving the complaint and appeal of the influenced people.

11.1.4 Tianhe Project

The land required for the construction of Tianhe flood control pumping station has already be acquired, and there is no involvement of resettlement in the project.




11.1.5 Longzi Lake Project

The subproject only relates to a small amount of temporary land acquisition for the dump sites for the desilted sludge, whose cost is estimated as around RMB5,6million Yuan by the RAP consultants.

11.1.6 Bengbu Urban (South of Huai River) Project

(1) Land Occupancy and Expropriation

The downtown drainage sub-project of Bengbu mainly involves the land of pump station work, rain water and sewage pipe work and road work. The area within the land scope for works and the area where the project construction so seriously affects the production and life of the residents that no recovery can be made are all included in the influenced area scope of the land expropriation and housing removal of the project.

(2) Compensation Budget

The total budget of this project is RMB 55,825,000, including the compensation cost of RMB27,737,000 for permanent land occupation, the compensation cost of RMB320,000 for temporary land occupation, the compensation cost of RMB 25,789,000 for demolishment of rural residential houses, the compensation cost of RMB1,605,000 for demolishment of urban residential houses, the compensation cost of RMB 356,000 for demolishment of unregistered houses and the compensation cost of RMB 9,000 for demolishment of land attachments.

（3）Conclusion Permanently Expropriated Land

The permanently expropriated land occupies 1202.8 mu in area, including farmland, non-agriculture land and permanent loss of crops, with 864 households and 2819 persons involved. All the villages / production units that are influenced can have compensation. The influenced will receive the young crops compensation. If the influenced villages will not reallocate the farmland, the influenced will receive the cash compensation: resettlement subsidy and part of the land compensation for the recovery of income and living. The young crops compensation for the expropriated land will be paid as per the compensation standard of Bengbu. If the collectively-owned land will not be reallocated, the influenced will receive the resettlement subsidy and part of the land compensation for the recovery of income and living. The local village and town government and the enterprises of the villages will provide job opportunities to the influenced. And the client of the project will provide the skill training in the first place to the influenced.




Permanently Dismantled Private Housing

The total floor area is 34602.96m2, including the buildings of the land, and there are 170 influenced households, including 631 persons. The influenced will receive cash compensation and be provided with affordable housing or relocation housing. The house owner without Title Deed will receive the compensation for house replacement price. For the dismantled rural housing, the compensation will be made in cash as per the replacement price of the same floor area plus the price of housing land, while for the dismantled urban housing, the cash compensation will be made as per the replacement price or exchange the house property right. If the dismantled are not satisfied with the compensation standard for housing removal, they can commission the professional agency to assess the property, and the result of assessment will be the compensation standard of housing removal.

Shops

There are totally 6 shops, involving 21 persons. The floor area of the influenced buildings is 2090.98m2. The shopkeeper of the influenced shops will receive cash compensation or their shops will be rebuilt in other places. All the owners of the business buildings before the date of the publication of the project construction, which are either the buildings without certificate or the extended temporary buildings, should receive compensation. For the dismantled buildings, the cash compensation should be made as per the policy of Bengbu. And the influenced enterprises will receive subsidy for relocation.

Public Facility

As the attachment, the influenced will receive cash compensation. The influenced collectivity will receive cash compensation or repairing. For the attachment on the ground of the expropriated land, compensation should be made in the replacement price in cash or repairing should be made till the ground is resumed to its previous condition or a better condition, and for the dismantled the buildings, cash compensation should be made in the replacement price of the same floor area.

11.1.7 Xijiagou & Baligou Project

（1）Land Occupancy and ExpropriationThe influenced scope of this project: the high-tech area of Xijiagou project; 2 villages in Yanshan County, 1 village in the high-tech area and 4 villages in Qinji Town are influenced by the Yinhe water system control project of the high-tech area; and totally 2 villages in Qinji Town and 1 village in Changqing Town area influenced by the Baligou control project.




There is 440 mu expropriated rural collectively-owned land in the sub-project of Xijiagou.

（2）Compensation BudgetThe total budget of this project is RMB 14,138,000, including the compensation cost of RMB12,921,000 for permanent land occupation, the compensation cost of RMB 914,000 for demolishment of rural residential houses, the compensation cost of RMB 25,000 for demolishment of unregistered houses and the compensation cost of RMB 278,000 for demolishment of land attachments.

（3）Conclusion Dismantled Rural Housing

According to the compensation and resettlement policy for the housing removal of this project, two ways of compensation and resettlement are adopted, namely, the cash compensation and the exchange of house property right. The resettlement can choose the way of compensation and resettlement that fits their economic condition and individual demands. Where the cash compensation is chose, the compensation shall be determined as per the assessment price of the local real estate market with such factors as the location, usage and floor area of the dismantled buildings taken into account.

Collectively-owned land

The compensation for land expropriation includes the land compensation, resettlement subsidy and the compensation for ground attachment and young crops.

11.1.8 Huaishang Project

（1）Land Occupancy and ExpropriationThe influenced scope of this project: 2 towns (Xiaobengbu Town and Wuxiaojie Town), 7 villages/ resident committees (Binhe Zhengdu Village, Wuxiaojie Village, Shanxiang Village, Houlou Village, Chentai Village, Xiaobengbu Village and Gaoan Village). There are totally 281 households that are influenced and removed, and the influenced population is 1103. In addition, there is one enterprise and 4 urban residents that are relocated.

Related figures: the total land occupancy is 12001 mu in area, including 11735 mu state-owned land and 266 mu rural land; the total area of dismantled buildings is 49086.2 m2, including 48433.2 m2 dismantled rural housing and 653 m2 influenced enterprise.

（2）Compensation Budget




The total resettlement budget of this project is RMB21,773,000 including the compensation cost of RMB4,672,000 for permanent land occupation, the compensation cost of RMB182,000 for temporary land occupation, the compensation cost of RMB 13,878,000 for demolishment of rural residential houses, and the compensation cost of RMB 3,041,000 for demolishment of land attachments.

（3）Conclusion Rural Dismantled Housing

According to the compensation and resettlement policy for the housing removal of this project, two ways of compensation and resettlement are adopted, namely, the cash compensation and the exchange of house property right. The resettlement can choose the way of compensation and resettlement that fits their economic condition and individual demands. Where the cash compensation is chose, the compensation shall be determined as per the assessment price of the local real estate market with such factors as the location, usage and floor area of the dismantled buildings taken into account.

Collectively-owned land

The compensation for land expropriation includes land compensation, resettlement subsidy and the compensation for ground attachment and young crops.

11.1.9 Guzhen Project

（1）Land Occupancy and Expropriation

The influenced scope of this project covers ： 2 villages in Chengguan Town (Meiying Village and Dongmiao Village), including 7 groups (Donghu Group, Huangying Group, Houmei Group, Xiaying Group, Jiangguai Group, Houdui Group, and Pangying Group), 484 households, 1936 persons, and 811.6mu paddy field. In Huanyuan County, there is 12 mu state-owned land, 21 influenced urban residential housing with1686m2 housing removal area, 4 influenced shops and 1 influenced enterprise.

（2）Compensation BudgetThe total budget of this project is RMB 5,972,000, including the compensation cost of RMB2,727,000 for permanent land occupation, the compensation cost of RMB559,000 for temporary land occupation, the compensation cost of RMB 118,000 for demolishment of rural residential houses, the compensation cost of RMB2,355,000 for demolishment of urban residential houses, and the compensation cost of RMB 213,000 for demolishment of land attachments.




（3）Conclusion Permanently Expropriated Land

The permanent expropriated land is 661.09 mu in area, including farmland, non-agriculture land and the permanent loss of crops, with 615 households and 3418 persons are involved. All the influenced villages/ work groups can receive compensation. The influenced will receive young crops compensation. If the influenced village will not reallocate the farmland, the influenced will receive cash compensation, namely the resettlement subsidy and part of the land compensation, for the recovery of the income and living.


The total floor area is 3351.39m2 including the buildings on the ground. There are 34 households influenced, involving 138 persons. The influenced householders will receive cash compensation and be provided with affordable housing or relocation housing. The house owner without Title Deed will receive the compensation made as per the house replacement price. For the dismantled rural housing, the compensation will be made in cash as per the replacement price of the same floor area plusing the local price of curtilage, while for the dismantled urban housing; the cash compensation will be made as per the replacement price or exchange the title (house property right). If the dismantled are not satisfied with the compensation standard for housing removal, they can commission the professional agency to audit the property, and the result of auditing will be the compensation standard of housing removal.

Shops

There is totally 1 shop, involving 63 persons. The floor area of the influenced buildings is 2829m2. The shopkeeper of the influenced shops will receive cash compensation or their shops will be rebuilt in other places. All the owners of the business buildings before the date of the publication of the project construction, which are either the buildings without certificate or the extended temporary buildings, should receive compensation. For the dismantled buildings, cash compensation should be made as per the policy of Bengbu. And the influenced enterprises will receive subsidy for relocation.

Public Facility

As the attachment, the influenced will receive cash compensation. The influenced collectivity will receive cash compensation or repairing. For the attachment on the ground of the expropriated land, compensation should be made in the replacement price in cash or repairing should be made till the ground is resumed to its previous condition or the better condition, and for the dismantled the




buildings, cash compensation should be made in the replacement price of the same floor area.

11.1.10 Huaiyuan Project

（1）Land Occupancy and ExpropriationThe flood prevention sub-project of Guzhen County involves land for ditch desilting work, embankment work, drainage PS building and rebuilding of municipal pipe network. The area within the land scope for works and the area where the project construction so seriously affects the production and life of the residents that no recovery can be made are all included in the influenced area scope of the land expropriation and housing removal of the project.

（2）Compensation BudgetThe total budget of this project is RMB 1,998,000, including the compensation cost of RMB1,607,000 for permanent land occupation, the compensation cost of RMB3,473,000 for demolishment of urban residential houses, the compensation cost of RMB 159,000 for demolishment of stores, and the compensation cost of RMB 278,000 for demolishment of land attachments.

（3）Conclusion Collectively-Owned Land

The compensation for land expropriation includes land compensation, resettlement subsidy and the compensation for ground attachment and young crops. The land compensation shall be in the possession of the rural collective economic organization, and the land expropriator can pay the village committee the land compensation in some proportion (no more than 20%) for the land expropriation, the money of which will be used by the village committee for developing the production and public welfare and shall not be defalcated. The remained land compensation can be paid to the land lost peasants directly or included into the basic living security fund of the land lost peasants. The compensation for the ground attachment and young crops shall be paid to the owner of the ground attachment and the young crops.


According to the compensation and resettlement policy for the housing removal of this project, two ways of compensation and resettlement are adopted, namely, the cash compensation and the exchange of house property right. The resettlement can choose the compensation and resettlement way that fits their economic condition and individual demands. Where the cash compensation is chose, the compensation shall be determined as per the assessment price of the local real estate market with such factors as the location, usage and floor area of




the dismantled buildings taken into account. The formula for calculating the cash compensation is the upper limit of the cash compensation price of the dismantled building×the floor are of the dismantled building.

11.1.11 Wuhe Project

（1）Land Occupancy and ExpropriationThe World Bank project in Wuhe County only involves the expropriation of rural collectively-owned land and there is no demolition. The rural collectively-owned land expropriated by the sub-project of Wuhe County is used for the work of the surface water treatment plant of Mohekou Town and the sewage treatment plant. Totally 2 villages, with 101 households and 420 persons, are influenced. The collectively-owned land expropriated is 139.69mu in area.

（2）Compensation BudgetThe total budget only consists of the compensation cost for permanent land acquisition, which is RMB2,305,000.

（3）Conclusion Rural Collectively-owned land

The land compensation will be paid to the rural collective organization from which the land is expropriated, and the money will be used for developing the production and settling the life of the peasants. The labor settlement subsidy will be paid to the farming persons who need resettlement and the settlement and reception agencies. The land contractor will receive the young crops compensation and labor resettlement subsidy.

11.2 Social Impacts

11.2.1 Social Impact Analysis and Mitigation Measures during Construction

11.2.1.1 Analysis of Impacts on Residents’ Life

During the construction, due to the excavation of ground, there will be flying dust when piling the earth and there will be more inhalation particles in the air, thus the surrounding residents and passers-by would be harmed in health.

There are many fuel equipments and power machines in the construction area, the noise of which is disturbing. The living quality of the residents is lowered.




It is inevitable that the construction would occupy road and greenery area, which will ruin the landscape and lower the traffic capacity of the road. And because of this, the local residents have to reroute their usual path whenever they go out, which is very inconvenient for their life.

For the construction of large scale project, there will be at least one or more construction sites. Because of the entering of the construction workers, there are not only more wastes and garbage, which pollute the environment, but also many diseases are easy to be spread since the sanitary condition in the sites is not good, so the health of the surrounding residents are threatened.

The management of the construction site would not be good since the people in the site are large in number and complex in constitute, and in addition, the people come and go frequently due to the supply and demands of construction materials as well as the living materials. There might be safety risks for the surrounding residents.

11.2.1.2 Analysis of Impacts on Project Area

During the construction of rain water and sewage pipe as well as the road, the most notable influence on the construction area is the influence on traffic.

If the construction is conducted within the unfinished area, since it is farmland in the surroundings in most occasions, which is open, the construction would be conducted in full range in this area to promote the progress of the construction of the whole road or the complete network fast. Although the road within the construction area is not good, which has small traffic flow, the accessing of the construction vehicles won’t have notable influence on the traffic capacity of the surrounding road, instead, it will influence the road outside of the construction area greatly and add traffic pressure to the road outside of the construction area, namely, when the loading trucks carry gravels and sand and construction garbage out, the gravels or sand or garbage dropped and spilled out along the road would lower the levelness and flatness of the road and create harm and risk to the road as well as the vehicles that pass by. .

The size and load of the transporting vehicles are large, so it is inevitable that the vehicles will produce some damages to the road surface and the foundation as well, especially the over loaded vehicles, which have stronger damaging capacity. If the construction lasts long in period, there will be road repairing and economy loss.

Where the project locates at the center of the city or downtown area, the frequent passing of the construction vehicles would impose more pressure on the traffic which has been tense enough, making the downtown traffic more




heavy and busy, especially at the rush hour, the traffic might be jammed when the idle condition of the vehicles lasts long and long-time horn of vehicle, thus the crowd would be restless and upset and the traffic order would be disturbed, due to which various traffic accidents are easy to take place.

According to the above analysis, the construction will not only generate adverse influences to the surroundings of the construction area, but also will bring some traffic and safety risks, affecting the social order and public living environment. Therefore, the management and control during the construction should be reinforced, the construction management system should be perfected, detail construction plan should be prepared, full consideration should be made to avoid the adverse influences and minimize the adverse influences to the society.

11.2.1.3 Mitigation Measures

1． The traffic management department should reinforce the management and control of the construction area, make traffic distribution and rerouting plan according to the construction plan, and organize the traffic by utilizing the adjacent traffic network to the most, ensuring the residents’ daily life won't be disturbed.

2．Before construction, the construction company should make sufficient and full preparation, have full understanding and investigation of the works in relation to the construction, and provide cooperation to the related departments to have all the emergency work be fully prepared in advance, ensuring the regular state of social life.

3． In order to minimize the influence the construction brings down to the life of the urban residents as well as the traffic, the traffic routes should be planned and distributed in uniform to avoid traffic jam, and inform the people in advance through such means as broadcast, television and newspaper.

4． There should be signboard erected at the construction site, on which such information as the works of the construction, time, name of the contact person and telephone number should be given, asking for the forgiveness from the public for the inconvenience caused by the construction.

5．The garbage produced by the construction of pipe network and road should be cleared and transported in time, and the road and the material field should be cleaned in time to free more the occupied land so that the residents can have free way to go out.

6． For the works that must be carried out at night due to the limit of the construction technology and techniques, there should be prevention measures and technical proposal for the construction at night. The low-noise equipments




and machines should be adopted as much as possible. The light mechanical equipments or semi-manual construction should be used. The mechanic vibration should be reduced and metal materials carrying should be avoided. The unruly loading and unloading and noise making is forbidden. The height and location of construction lighting should not affect the surrounding residents.

7．When the water supply, drainage, gas supply and heating supply is affected by the construction, negotiation and coordination with related authorities should be made in advance to work out the emergency plan. There should be persons specially assigned for the site supervision and inspection to ensure the accident can be treated promptly at the time it takes place.

8 ． The construction company should reinforce the management of both the construction workers and the site, have each worker and the visiting person registered and checked, and strengthen contact with the departments of property management and residents committee, communicating information from time to time, to strengthen the safety of the construction site and eliminate the restless and antipathy feelings and worries of the residents.

11.2.2 Analysis of the Social Impacts after the Project Completion

11.2.2.1 Huaiyuan Project

1． Influence on Society and EconomyThis project is a part of the road network, rain water pipe network and flood prevention and drainage system in the urban master planning. When the project is completed, it is not only the road and pipe network system of the city oil and grains industrial base is improved, but also the flood prevention and drainage capacity of Chengguan Town is enhanced. Thereby, the pace of realizing the urban master planning is quickened and the goal of social and economic development can be achieved soon.

（ 1） The Traffic Condition of the Oil and Grains Industrial Base of Chengguan Town is Improved

The oil and grains industrial base of Chengguan Town is located in rural area. According to the urban master planning, Chengguan Town will be the industrial area of Huanyuan County. However, the undeveloped traffic of that place prevents the development of economy seriously. The road work of the oil and grains industrial base of Chengguan Town improves the traffic there greatly. Improving the investing environment and enhancing the capacity of economic investing will promote the economy of this area greatly. It will be convenient for the residents to go out after the completion of the project.




（2）The Flood Prevention and Drainage Capacity is EnhancedThe current rain water drainage capacity of Chengguan Town is weak. The drainage network is in broken condition and it is open channel in some place, furthermore, in some place there is no drainage system at all. The project will perfect the rain water network, enhance the capacity of collecting and drainage of flood, increase the buffer time of flood, enhance the capacity of flood prevention and drainage of the city, mitigate the damages brought to the property of people by the flood, guaranteeing people’s happy and peaceful life.

In a word, the completion of the project will greatly enhance the service ability of the urban infrastructure, improve the city environment obviously, fasten the urbanization of Huaiyuan County and promote the economic and social development of Huanyuan County.

2．Analysis of Influence on Urban Environment and Ecological Landscape

（1）After the road work is completed, the road greenery will be increased and reasonable arrangement will be made. The road greenery can protect the road surface, prevent the water and soil from losing, reduce the traffic dust and noise, adjust and improve the microclimate of road, thus improving the landscape along the road and beautifying the road.

（2）The appearance of a city is often learned first when people pass along the road of the city. The road greenery would enhance the beauty of the city and makes people feel fresh and natural.

（3）The desilting of hill pond enhance the capacity of flood storage, enlarge the water surface in area, and create the nature landscape. Meanwhile, the vegetation resuming work is conducted around the hill pond, improving the environment of the pond further.

（ 4 ） The perfecting of the urban flood prevention and rain water drainage network mitigates the damages the flood brings to the environment of the city.

（ 5） Plant is one of the element that creates the beauty of city. Varied and colorful landscape of road can be made by making use of the unique lines, shapes, color and seasonal variation of plants, and characteristics can be formed to match the road lamps, flower bed and dustbin through the different types of trees, blossom period and arrangement.

（6）The road greenbelt can decorate the city and foil the buildings along the road. Meanwhile, it can satisfy the residents living in the high rise buildings who want greenbelt.

To sum up, the project will increase the beauty of the city and make people feel comfortable when it is completed.




11.2.2.2 Huaishang Project

The construction of the project may make the land lost people suffer some financial loss and affect the life of the residents. In addition to the adverse influence on the traffic and social security, the main influence the construction of the project brings to the social economy is the positive social economic benefits like promoting the economic growth and driving the development of the industry.

（ 1） The construction of the project requires the participation of the design institute, construction company, architecture company, transporting company, and construction material supplier. In addition, large number of construction workers should be employed, to whom living materials and social services should be provided. All of the work will provide more employment to the place and bring income to the companies, enterprises and the majority labor workers, thus promoting the development of the national economy.

（ 2） The project will play an important part in the social development and progress of Huaishang District after it is completed, which beautifies the environment, improves the living condition and health of people, brings investment, promotes stability and solidarity, has good social effects and Pb the economic prosperity of the surrounding area.

（ 3）When the project is completed, the place where the project locates will provide the guarantee of flood prevention and good living environment. There will be good place for the citizen to have intimacy with the nature.

（ 4）Due to the large amount of investment on the project, the demand for materials increase, thus the production of related enterprises can be increased for producing the required construction materials like steel, building material and cement, which will be purchased at local area. Bengbu City and the surrounding enterprises will benefit from that.

（5）Since the construction of the project requires large number of labor workers, there will be more job opportunity and the income of the local people will be increased.

11.2.2.3 Guzhen Project

The project will greatly enhance the flood control and prevention capacity of Guzhen County through works like reinforcing the embankment, desilting the drainage canals and building (rebuilding) the flood drainage station. The rate of the urban sewage collection is increased through the building of urban sewage network. And through the building of the main sewage pipe at the source place of drinkable water, the water at the water supply points of the urban water supply company in the planning can be prevented from being polluted, thus enhancing




the operation condition of the urban water supply company. The remarkable social benefits the project brings to include the following:

（1）The increase of sewage collection rate creates a better living condition for the people of Guzhen County

At present, since the urban drainage system of Guzhen County is in confusion, furthermore, the drainage of most of the places is made separately; the quality of the water environment in the city is bad. After cleaning and control, most of the urban places will be covered into the urban drainage system, thus promoting the level of city infrastructure construction.

（2）Strengthening the protection of the source place of drinkable water to create advantageous condition for finding new water source.

At present, the water used by the people of Guzhen County is sourced from the underground water. The over exploration of underground water will cause the sink of stratum, due to which most of the places of China are looking for new water sources and it has become a trend that the surface water which meets the standard of drinkable water is adopted as the drinkable water. Currently, the water quality of the drinkable water source place can not meet the surface water standard of Type Ⅱ yet and the chief reason for this is the sewage discharged from the residential area and enterprises of the northwest part of the city deteriorates the water. The project will have the sewage of this area be led into the urban drainage system, thus improving the water quality of the water source and making the water source usable for the water supply company.

（3） Improving the landscape environment along the banks of the Sanba River and promoting the city image and living environment

The Sanba River is one artificially excavated riverway, which has been used as the sewage discharging canal. As a river that crosses the whole county, the water environment is low in level and does not meet the requirement of urban landscape. As the developing of the urban area, part of the residential district has been built or planned to be built along the banks of the river, and the requirement on the river landscape is higher and higher. After the rebuilding of the main sewage pipe network, most of the sewage in the urban area will not be discharged directly into the Sanba River, instead it is delivered through the sewage pipe to the waste water treatment plant (under construction), thereby the pollution of the Sanba River can be stopped to some extent and the biological self purification work of the river can be resumed, thus Guzhen can have a clean the Sanba River again. Along the banks of the Sanba River, slope protection work will be conduction, which will improve the landscape of the river further. The rebuilt banks of the Sanba River will be a good place for people to have recreation.




（ 4） The construction of project requires labor force and there will be more opportunities of employment

This project involves much in range, extends long in distance and requires large number of labor force for the construction. Because of this, the unemployment situation of this place can be relieved to some extent and the income of the local people will be increased.

（ 5 ） Enhance the overall urban construction level and it will be good for attracting investment

Anhui Province, as the undeveloped place in economy, is far behind the coastal cities and other developed area in urban construction level, especially some small counties. The progress of urban construction is slow as the main industry of this area is agriculture. Through this flood prevention and the comprehensive control of environment, the infrastructure will be perfected and the urban construction will be enhanced greatly, thus advantageous condition is created for attracting investment.

（6）The improvement of flood prevention capacity will mitigate the influence of the natural disaster

The area along the Huai River of Anhui is the place where flood happens frequently and suffers economic loss incurred by the flood every year. Its special geological location is one of the reasons for this. But the loss can be avoided to the most by improving the flood prevention capacity. This project promote the urban flood prevention work to the standard that is able to meet the flood happening with a frequency of every 20years, the drainage of built urban area to the standard that is able to meet the flood happening with a frequency of every 10 years and the drainage ditch with the frequency of every 5 years. The improving of the flood prevention and control standard will mitigate the influence flood brings to the people and thus the people can have a safer living environment.

11.2.2.4 Wuhe Project

This project will greatly enhance the water quality and sewage treatment ability of the industrial zone of Mohekou Town, improve the quality of the drinkable water supplied to the people of Mohekou Town, increase the infrastructure and promote the living standard through environment control and building pipe network, water purification plant and waste water treatment plant. The social influences brought by this project mainly include as follows:

1．Social Benefits

（1）Create better living conditions for people




It makes the tap water supply be available in the rural area and the life of people become more convenient. The water environment of creeks and canals in rural area is improved after treating the waste water. The quality of the treated water is qualified enough for the agricultural production and thus the earnings of agriculture can be increased.

（2）It is favorable for the development of commercial trade of the industrial zoneThe imperfection of the current infrastructure of the place where the project locates restricts the development of commercial trades and affects the enthusiasm of the investors seriously. The implementation of the project will perfect the infrastructure, improve the investing environment, attract more investment, strengthen the confidence of the investors and promote the development of the commercial trade forcefully in surrounding area.

（ 3 ） The construction of the project requires large amount of investment, increases the demand for materials and can bring along the production of the enterprises

Most of the materials required by the construction like steel, building materials and cement will be purchase in local place. Bengbu City and the surrounding enterprises will benefit from that.

（4）The construction of the project requires labor force and there will be more employment opportunities, thus relieving the unemployment pressure.

The construction of the whole project is planned to be conducted stage by stage, and the construction period will last 5 years, during which large number of labor force will be required, and thus the unemployment pressure will be relieved.

（5）The waste water treatment system reduces the facility and operation cost of waste water treatment of each enterprise, which is good for the construction and development of the industrial zone.

2．Adverse Social Influence Although this project is made for improving environment, the implementation of it will also bring some adverse influences：（1）After the waste water is controlled and treated, the enterprises will have to pay the added cost for waste discharge and water supply. The cost of production is increased.

（2）The cost of tap water is increased and the living expense of the residents is increased

(3) If the peasants abandon agricultural work and start new work without receiving sufficient vocational training in advance, it might be difficult for them to find a job. If they stay unemployed for long, there will be risks for social security.




12Conclusions and Recommendations

12.1 Conclusions

12.1.1 General Conclusion

12.1.1.1 Project Summary

Located in the middle and lower reaches of the Huai River Basin, Bengbu is an important industrial city and surface transport hub, but over the years by the Huai River flood discharge in the flood season, flood is frequent and the economy has suffered huge losses. Agricultural production and urban development have been affected to some extent and constrained.

Bengbu City is planning to use the World Bank loan for urban flood control projects and ecological construction. The project is divided into eight subprojects, namely:

1. Tianhe Flood Control Project

2. Longzi Lake Flood Control & Environment Improvement Project

3. Urban (South of Huai River) Environment Infrastructure Improvement Project

4. Xijiagou & Baligou Environment Improvement Project

5. Huaishang District Flood Control & Urban Environmental Infrastructure Improvement Project

6. Guzhen County Integrated Environment Improvement Project

7. Huaiyuan County Integrated Environment Improvement Project

8. Wuhe County Mohekou Integrated Environment Improvement Project

Such as major construction projects involve, water projects such as the desilting of drainage PSs, flood control ditches and waterlogging drainage and so on. ecological control projects such as sewage pipe network, rain water pipe network, roads and bridges and other infrastructure projects, Longzi Lake desilting, ditches slope green and the restoration of vegetation and so on.

Regions in construction projects include urban Bengbu, Huaishang District, Wuhe county Mo river estuary town, Huaiyuan County Chengguan Town, Grain and Oil processing district, Guzhen Town and the outskirts of the city.




Total project investment is 1.66 billion yuan. The construction period is five years, and the entire project is to be completed in 2012 and put into use.




12.1.1.2 Environmental Baseline of Bengbu Municipality

Ambient air quality is at level 2 in Bengbu City. The main rivers in this area include Huai River, Huihe River, Guo River, Huaihongxin River, Cihuai New River, Beifei River and Mochongyin River. Surface water bodies of the city are mainly the Tianhe Lake Longzi Lake, Zhanggongshan Pond, Xijiagou, and Baligou and so on.

The function of water body of Huai River in Bengbu is Class III. Water function of the Huihe River, simultaneously, and other tributaries of the river flow is Class III or IV category. Tianhe Lake water function is Class III, and Longzi Lake for the status quo is IV.

Bengbu City drinking water is from the Huai River. The inlet is 200 meters up the Bengbu Gate. It has one surface water factory with water scale of 400,000 tons / day, and the status quo of the northern Huai River bank is that groundwater is the main source for supply water.

The city has one sewage treatment plant at the west side of Xijiagou, with designed scale of 200,000 tons / day, and now it is in normal operation of 100,000 tons/day.

The old urban area of Bengbu has been formed stormwater drainage system for sewage diversion system, but in western city Baligou area, the eastern area of Longzi Lake in eastern city and southwestern region of the city have not yet formed drainage network. Rain drains into the river through surface water body and ditches in the end.

Now city drainage in Bengbu urban area is mainly through drainage PSs and from the natural drains at the shore of the Huai River, However, the flood water level in the Huai River is relatively high in the flood time, making Bengbu City water can not be discharged. If there is a storm season, necessarily it leads to severe waterlogging. So to improve the drainage capacity drainage PSs is very necessary.

The other hand, the city of Bengbu has a large distribution of ditches and pond, and it is a natural way to use them for flood and waterlogging control, but because of serious pond sediment their storage capacity led to a massive reduction, witch is a disadvantage for flood control to reduce disasters. So when building drainage PS, the main canals and lakes desilting to improve the City Flood Control and Drainage capacity is extremely beneficial at the same time.

According to the Bengbu City's overall development plan and the "11th Five-Year" plan for environmental protection objectives, in 2010 it will achieve the urban sewage treatment rate to reach 70%. This sets higher requirements for city sewer network construction. The status quo of Bengbu urban sewage collection rate is




about 70%, but the sewerage treatment rate is less than 30%. As building of a sewage pipe network at the same time supporting the building of a sewage treatment plant is imperative. It is the base to increase the rate of sewage treatment, to effectively control the total discharge of pollutants, and to achieve environmental benefits.




12.1.1.3 Project Impact Analysis

Project Construction Period

1. Construction noise is concluded basically in the construction industry plants within 100 meters. In this context the environmentally sensitive point and environmental protected targets will be affected by some noise to some extent.

2. Construction dust affected area will be within the 100 meters in the leeward area, after 4-5 times of the sprinkling a day, dust affected area will decrease within 50 meters.

3. Construction wastewater includes construction operations wastewater and living wastewater of builders in the construction area. Improper disposal of the surrounding water will cause pollution to the near water body, and in turn have adverse environmental impacts to the Huai river water. After sedimentation through sedimentation tanks set up at the construction site, the supernatant of construction work wastewater can be collected as dust sprinkler water and for construction techniques using, making the best to minimize outside water. Wastewater with sludge at the scene shall be not disposed arbitrarily and into neighboring channels, lakes and other water bodies. It can’t be discharged into the municipal drainage channels. Wastewater should be subject to municipal departments to process, or shipped to the disposal site assigned by the municipal departments. Integrated sewage water treatment equipment should be installed to treat the living wastewater in the, which can be disposed after treatment.

In principle, when having construction in the urban areas, towns, the wastewater of construction should be treated by sedimentation and then is discharged into municipal sewers, but no wastewater with sludge in it. In the uncompleted construction zone in rural or suburban area without such kind of sewers, construction wastewater must be grease trapped by precipitation and reach the discharging standard, then it can be discharged into the water body where allows the discharge water or sewers.

4. In accordance with the provisions related to environmental protection, various kind of Class III water wastewater must be treated to meet primary standard of Integrated Wastewater Discharge Standard before into Huai River. Into the Guo River, Huihe River and stream tributaries of the Huai River, the sewage must be treated to secondary class emission standards. The waste water discharge standards and the means of discharging are in strict in accordance with the requirements of environmental protection departments for the implementation of the relevant provisions. According to the Municipal Environmental Protection Bureau, Tianhe Ricer, as Bengbu City emergency source of drinking water, no any sewage and wastewater can be discharged into it. Remnant water of the yard for




Longzi Lake desilting should reach primary standard of Integrated Wastewater Discharge Standard.

5. Major water pollutants of the yard for Longzi Lake desilting are NH3-N and the SS. To make the yard remnant water reach the discharge standards, effective measures must be taken to decrease the concentration of the pollutants in the water, and it is proposed to increase the water retention time, increase coagulant and use other kind of methods.

6. The sludge dredged from lakes and ditches pond will not only occupy large tracts of land, but also make the groundwater and surface water polluted. Sludge disposal ways are closely related to its components. By monitoring various urban and suburban sewers and lake sediment sludge, the EIA content get to find that the contents of all urban Bengbu pond sediments are close the same. And the heavy metals in the sludge were not overweight, and meet the "soil environmental quality standards" and "agricultural sludge pollution control standards", but because of no comprehensive monitoring indicators, without excluding the results of chance, it is not entirely proven that the sludge is harmless. In order to avoid farmland and crops pollution, thus endangering the health of the population, it is not recommended for dredged sludge to be discharged into agricultural land in this EIA. After being dried naturally sludge can be back for woodland, green belt, mountain habitat sculpture made, or can be used as backfill for the site formation.

Xijiagou accepts wastewater for a long period because of the sewage it accepted, most of which are industrial wastewater and sediment complex. Although it dose not exceed the third class standards of Soil Environmental Quality, the sludge has higher Hg content which is higher than the soil background values of Anhui province 2.2-2.9 times. Together with large amount of organic ingredients, which can easily Pb stench, it is not appropriate to be used in human crowd and frequent contacting region. It is best to make them digest in the region themselves. Once it is used as roadside greening purposes, it is better to try to make the project earthwork balance and avoid disposing outside.

Project Operation Period

In the project running period, major pollutions include the running noise from drainage PSs, road and bridge traffic noise and car exhaust pollution and tail water from Mohekou town sewage treatment plant, sewage plant odors, and the remaining sludge disposal and so on.

1. When the pump station is completed, it will be in short-term use instead of in continuous use, and generally is needed only when it is in flood period. The impact area of PS operating noise should be controlled in the first class type by the implementation of the Regional Environmental Noise Standards" (night 45dB




(A), daytime 55 dB (A)) for the 220 meters at night, daytime 70 meters. In this context the environmentally sensitive point and environmental targets will be affected to some extent.

2. The proposed road noise impact is closely related to road traffic, road grading, day-traffic flow and model rate of traffic. In this project, roads only have the total traffic flow, not related to day and night and no model rate, so it is not possible to make environmental impact analysis for the proposed road traffic noise and vehicle exhaust.

According to information analogy, usually red line width of 40 meters in the city roads, its noise impact on the road outside the red line is 50 meters on day time, and 150 meters at night. Automobile exhaust pollution impact on the hard shoulder outside is within 20 meters.

3. In the Mohekou Industry Zone area surface water factory operation period, the noise impact distance is within 10 meters from the production structures and in the water purification plant the noise emission meet the standards. Sludge production is 9 tons / day, the moisture content is 80%, and the main part of the sludge from the water purification process is silt and flocculants, which part can be considered as fertilizer for farm.

4. In the Mohekou sewage treatment plant operation period, sludge production is 14.3 tons and water content is 80%. For the high proportion of industry wastewater in the water treated by Mohekou sewage treatment plant, most of them are fine chemical industry wastewater, so sewage treatment plant the residual sludge is complex and is more likely to contain harmful toxic substances and heavy metals pollution. The EIA recommend that the park's sewage plant sludge should be shipped to the city landfill for disposal harmless, no return for farmland and drains green slope to prevent pollution of soil and groundwater.

Smelly materials from the sewage plant are mainly H2S and NH3. The impact distance is 200m.

Emissions of tail sewage plant water implements Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB18918-2002) in a first class A standard, through Sanpu Lake drainage stations diversion canal into the Huai River. From the predicted results of the environmental impact, we can see that COD concentration of water in outfall 200m downstream can meet the features standard requirements of water environment. COD concentration at downstream 1300m place can be achieved background concentration. Tail water from Sewage treatment plants of Mohekou into the river, can cause water pollution of the Huai River at sewage outfall downstream of 1300m.

12.1.1.4 Project Environmental Benefits




The major environmental benefits of this project reflect in the volume of emissions control to the Huai River, and the environmental benefits created by Mohekou Park sewage treatment plant.

1. According to 2005 statistics, in 2005 the total Bengbu City sewage is about 141.47 million tons / year. Urban sewage treatment capacity is 25.55 million tons and industrial waste water treatment capacity is 16.89 million tons. The concentrated sewage treatment rate is about 30% and the ratio of domestic wastewater to industrial wastewater is 3:2.

In Bengbu City, sewage water is mainly emitted through 7urban sewage outfalls. In 2005 total outfall drainage of seven major is 107.74 million tons / year, in which Xijiagou, Longzi Lake, Baligou displacement are the biggest one. In the western city Xijiagou, Baligou accept the industrial waste easily. In the eastern city Longzi Lake accept living sewage water mainly. The local sewage pipe network has basically taken shape between Xijiagou and the Longzi Lake, but it is in the lack of network connectivity. The network has not yet matured between east of Baligou and west of Longzi Lake, and the project of urban drainage works will focus on the region to build pipe network and the renovation and expansion of convergence. The pipe network construction in the Longzi Lake industrial park, new high-tech zones and part of uncompleted pie network is to raise Bengbu City sewage water collection rates.

Now, in Bengbu City, only Xijiagou area has the No.1 Sewage Treatment Plant, so industrial and domestic sewage effluent in Xijiagou area are basically treated in the sewage treatment plants and then drained to Xijiagou, although Xijiagou area has the largest sewage, a lower concentration of pollutants is showed in the water. Discharge in Longzi Lake and Jiaotong Road area is less than Xijiagou, however, it has the higher concentration of the pollutants. Drainage network in Baojiagou area has not yet formed. Sewage collected by the natural drains is extremely limited, but at the same time its wastewater pollutant concentration is relatively high, showing that perfect urban sewage pipe network construction is very necessary.

The project, when completed, will make an interface and adjustments to the status quo relatively fragmented drainage system. According to the plan, in 2010, it will create a more focused drainage system.

2. According to Bengbu city development planning and drainage plans, By 2010, Bengbu City's sewerage system will have been divided into four drainage system, which includes Xijiagou sewage system, Yangtaizi sewage system, northern Huaishang River sewage system, and south city sewage systems as a network. The total sewage can get to 494,100 m3/d. These sewage treatment plants will be completed in 2010 and put into use. South City Sewage Treatment Plant is has been planned to be built in 2020, but in order to be in line with the construction of




World Bank's project, South City wastewater treatment plant will be completed in 2012.

Without matching increase in the sewage treatment plant construction after city drainage projects completed, the increasing in sewage and the concentration of outfalls may Pb to the pollution discharged into the river much higher than the total volume of emissions in 2005 and to the adverse environmental impact in the river water. According to the EIA forecast in the near future if only to maintain the status quo Xijiagou 100,000 tons / day of processing capacity before 2,010, then, in 2010, with an increase to the amount of waste water, it will get to 1.68 times higher than in 2005 while the pollutants discharged into the river COD and ammonia emissions will rise to the 1.87 and 1.80 times to the status quo in 2005 respectively.

If in 2010 the planned Xijiagou sewage plant is to be completed 200,000 m3/ day, Yangtaizi sewage plant 100,000 tons / day, North Huaishang sewage plant on a 25,000 m3/ day, and they are in a full operation, in 2010 the sewage volume is 70% increase compared to 2005. The pollutants discharged into the river COD emissions will be basically the same to the status quo in 2005 on the total amount (increased by only 6.2 %), and ammonia emissions will decrease by 9.3% compared to 2005.

According to the EIA forecast, in 2010 if all the planning sewage plants will be completed and put into use, urban sewage can all be treated effectively, then the influenced distance of Bengbu City sewage into the river is within 2.4km from the Mohekou section downstream (32.5km downstream from Bengbu Gate), and the quality of the Huai River will be under control in the scope of Bengbu area. The forecast results indicate that if each sewage plant can ensure the emissions standards, the increase in the volume of sewage discharge will not have environment obvious adverse effects to the river downstream water.

If accident emissions happen in the sewage treatment plant, it will increase the river's pollution levels and risks. According to the forecast, if sewage treatment plant can not get an effective sewage treatment, up to standard, the COD pollution influence will be increased from Mohekou section to 57km downstream water (87km downstream from Bengbu Gate). Ammonia pollution from the estuary will be increased from Mohekou section to 67km downstream. (107km downstream from Bengbu Gate). It visibly will have significant impact on the lower reaches of the Huai River.

In summary, the city pipeline project with the construction of sewage treatment work, is the basic way to achieve the fundamental environmental benefits.

3. In the Mohekou Park sewage treatment plant project, the increase of strength of Mohekou town park construction and attraction of investment will make estuary




town of sewage rapidly increase in the planning year. The wastewater collected by the pipe network and discharged into the river will increase the receiving volume of Huai River. So the park's sewage plant construction operation is bound to reduce the pollutants discharged into the river total. According to the EIA accounting of the park's sewage plant, pollutant abatement proportion of the total COD reduction is 50%, and ammonia reduction is 66.7%. Tail water Mohekou sewage plant discharges into the Huai River will Pb a certain degree of pollution from the outfall to the downstream 1300m within the scope of the Huai River water.

12.1.2 Conclusions for Subprojects

12.1.2.1 Urban Drainage Project

Regional distribution of construction is in Bengbu the Old City, high-tech zones, Dragon Seed Lakes Industrial Park. The main contents of the building include 4 pump stations, rain sewage pipe network and three sewage lifting pump stations, and the new district road as the three parts of the contents. The total project investment is 388.9387 million yuan, and the construction period is four years, in preparation for full operation in 2012。The status of Bengbu urban stormwater drainage is through various drainage ditches and with the surrounding surface water bodies into Huai River. While the drainage system in old city district was basically completed, but there are still some sections of connectivity which is not complete, therefore, it is necessary to connect the stormwater drainages in these sections with the pipeline network to form a complete drainage system. So that part of the contents of construction is basically renovation and expansion project. The pipelines dispersed widely, so the project work is not large, but due to many environmentally sensitive points in this construction period, the impact construction is heavy.

The proposed high-tech development zones and Longzi Lake Park stormwater pipeline are new projects. The meaning of the construction is to collect the wastewater from west Longzi Lake area and west Baligou area in high-tech zones into the southern city sewerage system of sewage. In the long-term management of wastewater plan, this part of wastewater collected from network will enter the planning southern city sewage treatment plant, which makes a fundamental condition for achieving long-term goal sewage treatment rate reaching 70%.

The proposed four drainage PSs project is basically renovation and expansion projects. The plans is the original pump station expansion alterations or upgrading of equipment to improve its drainage capacity for flood control, strengthening old Bengbu City flood season safety. In the Longzi Lake Park, high-tech zones in the




region, roads and the construction of pipelines are basically new projects, and it mainly improves the infrastructure construction of the area.

The main influence in the construction period is the construction noise and construction dust. Dust from the impact of the construction is 100 meters outside of the construction border. Through frequent watering it can affect the impact scope and makes it within 50 meters. The influence distance of construction noise is within100 meters from the outside of construction factory site on daytime. Construction spoil should be backfilling in priority. Once it is used as roadside greening purposes, it is better to try to make the project earthwork balance and avoid disposing outside.

When projects completed and put into operation, the main environmental problem is draining the running noise impact and the influenced distance is 70 meters for daytime, and night of 220 meters. In this context the environmentally sensitive point and environmental protected targets will be affected by some noise to some extent.

Major solid waste in the operation period is from the waterlogging pump station gate residue. Each year about 3,000 tons drainage station gate slag will be produced. Part of the gate residue will be handed over to sanitation departments and treated together with living garbage.

Under the condition of strengthening construction management and the implementation of environmental protection measures, the project of building will Pb little impact to the surrounding environment. Major social benefits of the construction projects are perfecting environment for infrastructure construction, improving drainage capacity in the urban area, the promotion of high-tech zones and Longzi Lake Park on the overall development, enhancing the city's flood control and drainage resilience capacity, and improving the living quality of city residents for the realization of long-term overall planning, environmental planning objectives of 11th Five-Year Plan to lay a solid foundation.

12.1.2.2 Tianhe Project

Analysis of impact in the construction period

Pollutants emitted are mainly concentrated in the construction period. The water pollutants include living sewage and manufacturing wastewater (oily waste water, sludge and waste water drainage pit) in the construction area. The main pollutant in domestic sewage is COD and its highest emission is 20 tons / day. The main pollutants in manufacturing wastewater is the SS. Atmospheric pollutants are mainly construction dust and construction machinery and transport vehicles’ fuel emissions, which are not quantitative intermittent emissions. The highest living garbage production is 0.34 tons / day. The source of sound environment impact is




from construction machinery and transport vehicles which produce the mechanical noise. The noise is about 75 to 105dB (A) 1m near the mechanical equipment.

Wastewater of construction after precipitation is all back to the construction site as possible, reducing the volume of wastewater discharge. Construction living sewage collection should be collected together and treated in sewage treatment facilities to meet the first class emission standard and then discharged into the river. Various of construction wastewater is forbidden to be discharged into the Tianhe. As the construction period of less sewage, the treated wastewater into the river water will not cause significant adverse environmental effects.

Operation Impact Analysis

In the operation period of the project, the main pollutant is Tianhe Drainage Station operating noise, which standalone operation noise is 75-85 dB (A). Wastewater discharge is produced from the Tianhe Station sewage. Solid waste discharge is mainly from Tianhe gate station slag and the lives of the workers.

In the operating period, Tianhe station operator will create noise source about 90-100dB (A), and the influenced distance is about 220 meters at night, daytime 70 meters. It will mainly have some impact to the PS management district workers living and working on the 80 meters northeast PS some. The neighboring villages are affected little.

In the operating period wastewater is mainly from living wastewater of workers in Tianhe wastewater PSs and road drainage. The volume of living wastewater is 7.65m3 / d, and it will be pretreated by septic tanks and package treatment facilities to achieve first class emission standard and then is discharged into the Huai River.

The main solid waste in PS in the operator period is the gate slag and the living garbage of workers. Gate slag production is 3,600 t / a (60% water content), in which leaves, twigs, grass, fiber and other floating objects are the main waste. The production of living garbage is 0.8t / a, solid waste will be shipped to the garbage collection and transportation systems, handled by the sanitation department.

12.1.2.3 Xijiagou & Baligou Project

Pollutant emissions

Pollutants emitted are mainly concentrated in the construction period. The water pollutants include living sewage and manufacturing wastewater (including manufacturing wastewater and the trickling water of the desilting sludge) in the construction area. The main pollutant in domestic sewage is COD and its highest




emission is 50 tons / day. The main pollutants in manufacturing wastewater is the SS. Atmospheric pollutants are mainly construction dust and construction machinery and transport vehicles’ fuel emissions, which are not quantitative intermittent emissions. The discarded soil is 375000 m3 /d. The highest living garbage production is 0.25 tons / day. The source of sound environment impact is from construction machinery and transport vehicles which produce the mechanical noise. The noise is about 75 to 105dB (A) 1m near the mechanical equipment.

Construction impact

The main impact is operations wastewater, excavation and desilting silt water seepage and construction living sewage on the water environment. The main pollutants in construction operations wastewater and seepage water is the SS, which is discharged into upstream of Baligou and Xijiagou rivers after the construction site settling tank. After sedimentation in septic tank, life sewage is discharged into Baligou and Xijiagou rivers. As the construction period of less sewage, the treated wastewater into the river water will not cause significant adverse environmental effects.

The major impact on the atmospheric environment in the construction period is the dust, fuel emissions and stench of sludge to the environment. The impact from construction bulldozers dust is 150m, and the road dust is 35-40m. The effect of odor is 30m from the leeward wind. Environmental protection measures can slow the impact and scope.

The impact of sound environment is from the noise of construction machinery and transport vehicles. While construction works in the factory sector meet Noise Limits for Construction Site standard, on this premise, average noise influenced distance throughout the construction phase is 100m at daytime, but it will reach 350m on piling phase.

The ecological environment affects in the construction period in the area include ground occupation, soil erosion and the impact on biological aspects. Construction area covers about 1,300 acres, of which Baligou marsh land banking project covering 840 acres. Xijiagou bulldozers project covers a total area of about 450-500 acres. If the project does not take water and soil conservation measures, the amount of soil erosion is about 860-890 tons / year. The impact of biological performance in the short run to the river is to the number of benthic organisms. The impact to the vegetation on the occupied land and construction dust falls on the leaves of the surrounding vegetation will affect their normal photosynthesis.

Environmental Benefit

The environmental benefit of the operation of the project is primarily reflected in Baligou and Xijiagou water environment improvement. After quality improvement




it will play a role to promote the ecosystem in a virtuous cycle. The quality improvement of Baligou and Xijiagou rivers provide the prerequisite and guarantee for the Huai River water quality to meet standards. After the regional environmental improvement, the urban landscape, the face of the city skyline and the surrounding environment quality will be improved significantly.

12.1.2.4 Longzi Lake Project

Pollution Sources Analysis

The main pollutants include water pollution, air pollution, noise and solid waste created in the construction period. Water pollutants include trickle water of desilting works, about 2396m3 / d. The total volume of a small number of construction operations wastewater and construction staff living wastewater is about 25,200 tons. Atmospheric pollutants mainly include construction dust and a small number of construction machinery and transport vehicles fuel emissions. Construction machinery and transport vehicles from the mechanical noise is the main source of sound environmental impact, and 1m away from the sound source the noise value is 70-100dB (A) while these mechanical equipment running. Solid waste includes dredged sludge 1150000 m3, the building construction site residues, material and about 126 tons of daily garbage created by construction staff.

The main pollutant of the Longzi Lake in the operation of the project period during pumps running in the flood PS is the mechanical noise. Its stand-alone operation noise is about 75 ~ 80dB (A).

Construction impact

Construction major impact is from the southern Longzi Lake for desilting and Longzi Lake Pump Station project.

Southern Longzi Lake for desilting project has the major environmental impacts of the over water discharges on water environment, stench caused to the atmospheric and environmental impact of desilting on benthic creatures. According to the EIA forecast, TN and TP influenced scope on Longzi Lake water quality is about 600m. Under normal circumstances TN and TP contribution at a distance of about 450m away from the outfall is lower than the concentration of Environmental Quality Standards for Surface Water Ⅲ-class water quality standard. Under abnormal circumstances, TN at a distance of 550m away from the outfall mouth and TP at a distance of 800m away from the water outfall, contribution to the concentration are lower than the concentration of Environmental Quality Standards for Surface Water III-class water quality standards for the relevant provisions. The influenced distance of the stench from sediment yard is about 30m. Desilting works will cause short-term benthic




creature numbers decline and after the project this influence will disappear. The types and quantities of river benthos will recover gradually.

The major environmental impact of Longzi Lake Pump Station construction period is construction machinery noise, dust and wastewater of construction. Daytime construction noise impact distance is 400m, but the distance at night is affected more than 500m. Daytime and nighttime construction will make adversely affect to the Xingfu Village on the east. The impact construction dust from is about 150m. Without effective measures, a dozen households in the village near the construction site will be adversely affected. Construction of wastewater by precipitation including wastewater containing suspended solids and a small amount of oily wastewater, wastewater containing suspended solids will be discharged into the river after sedimentation treatment. Construction living sewage will be discarded into the river after treatment through the of small integrated sewage treatment plant.

Impact in operation period

The major impact on the environment in the operation period is mainly the noise of operation compressor pumps and machinery of Longzi Lake pump station to the acoustic environment.

According to the most adverse forecast, the noise impact value from Longzi Lake pump station pumps to Xingfu village is 55.1 dB (A), and the noise impact value from the main pumps room is 43.1 dB (A). Because of high background noise in Xingfu village, it will Pb to noise superposed overweight for Longzi Lake drainage PS running noise with the background noise and it will make adverse acoustic environmental impact to the Xingfu village at the east when the pump station is running. However, the pump station only is under running by the flood drainage, so the impact on the periphery of is short-term to its acoustic environment. In the actual operation, the extent and scope of the adverse impact will be less than forecast in this report.

Conclusion of environmental benefits analysis

The project total investment is about 265 million yuan, of which 3.7 million is for environmental protection, about 1.40% of the total investment. This is the major cost for desilting project water treatment, yard grass and environmental monitoring. After completion of the project, Longzi Lake water and the ecological environment of the lakefront will be improved, and this will increase tourism revenue, reduce economic losses flood disasters Pb. Its environmental economy is obvious for enabling the land value in the surrounding area to rise.

12.1.2.5 Guzhen Project

Project construction period




1. Ditch pond desilting and sediment transport process stench will have an impact on the surrounding environment. The process of digging in a ditch covered in the desilting project will be more obvious odor. 30m outside reaches a second level strength, a slight odor, and the stench below the limit of intensity (2.5-3.5 level). 50m outside, it is basic odorless. The desilting project on pond is mainly in the old side streets, where residents are more concentrated, and some sensitive points on pond outside are within 30 m, or even living in the ditch side. Ditch pond desilting will make them temporarily influence to a certain extent.

2. The project to build dams, flood control road construction, urban network projects such as the laying of the construction will cause dust pollution. Construction bulldozers dust in the affected areas is within 150 m. Road construction dust as unorganized sector sources, the highest concentration of it outside the border should be less than 1.0 mg/m3. Under the circumstances without sprinkler, the impact from the roadside is 50 ~ 100 m. Under the sprinkler circumstances, the impact distance is about 35 to 40 m. During the construction process, special attention is paid on the urban network construction, as most of the constructions are around city roads, and both sides of the construction site are crowded areas. In these sections of the construction process, particular attention will be paid to take measures and try to minimize dust pollution.

3. Construction noise impact on the environment is mainly in piling stage. Under the conditions to ensure that the construction site noise meets the standard, on piling stage daytime factory border outside 350m noise meets standards and the remaining phases of daytime factory border outside 80 to 100m outside noise meets the standard. The residents at a distance of 100m construction site will be affected by the construction noise, and the residents from the construction site within 350 m will be influenced by construction noise on piling phase.

4. The solid waste including: sludge desilting garbage, sediment for the ponds, the earth in the process of desilting ditches, the earth of excavation, the roots, aggregates and so on; The abandoned building materials at the PS renovation; The material loss in the process of transporting materials, including gravel, concrete, etc.; And the loss and desertion of paving stone, ash, construction materials in the road dressing stage.

The total ditch pond desilting is about 30,000m3, and the landfill site is located in the eastern town near the sulfuric acid plant, about 2.5 km from the Niushi Alley. The landfill was put into use in 2002, disposing of 150 t life solid waste.

The total river desilting earthwork excavation volume is 273,400m3, planning for local channels slope reinforcement. There is little impact on the environment for none outside earthwork in the entire desilting process.




Construction living garbage production is 1.5 t/d, timely delivery of sanitation sector to designated locations for disposal.

5. During the construction, site cleaning, pipeline laying, concrete modulation, construction and implementation of the installation works, will bring a certain amount of water and construction abandoned water. But the sub-project sewage emission is little.

6. Soil erosion analysis of the item

Possible soil erosion of the main construction phase is in the process of excavation for laying the ground pipeline, and bulldozers desilting. However, due to the implementation of the project belonging to plain areas, soil erosion is unlikely.

7. Traffic impact

Construction impact on the traffic is mainly on the impact of road traffic. Pipeline road construction to break road will Pb to obstruct traffic, the earth moving stow obstruct traffic, and transport vehicles Pb to the road traffic increases.

Operation Period

The main adversely affect in the operation period to the environment is the main drainage pump station noise and flood the roads wastewater.

1. Noise of PSs

The nearest environmentally sensitive point to the PS is the small furniture factory 10m east of Guxi drainage pump station. 10m from the pump station the noise has attenuated to have 40 to 45 dB (A), below the Measuring Method of Environmental Noise of Urban Area (GB - 1993) daytime 50 dB (A) the standard value, also reaches the night of 45 dB (A) of the standard value.

2. Flood road wastewater

The total discharge volume of pollutants in the surface water of the four flood dike roads, Huihe left embankment road, the Jiegou road, LiuYuangangou road and the Sanba river right embankment road are: COD 47.74 kg / d, BOD5 8.68 kg / d, oil 0.87 kg / d, SS 121.53 kg / d, TP 0.36 kg / d, TN 1.31 kg / d.

12.1.2.6 Huaiyuan Project

1. The project, when completed, vehicle emission pollutants of Chengguan town where it is foodstuff processing base is more than those of no project. This is mainly because the construction of road for foodstuff processing base from scratch, and the total length of road is 15000m and leads to increasing pollution




load. However, by the analysis on the whole project, its overall benefits after completion is obviously greater than its environmental issues. Besides, automobile exhaust can also be reduced by taking other environmental measures such as restricting the traffic volume and driving speed, and planting green plants.

2. The road works project of Chengguan Town, one of the foodstuff processing bases, can greatly enhance its traffic capacity and promote the development of public transport, save people’s traveling time, and help its promotion in economy as an industrial zone.

3. The City drainage Project on storm will clear the sludge from the flood discharge ditch and water storage ponds. At the same time distribution network will be improved, drainage PS will be new built or extended, as to integrated the city's drainage system and raise the city's overall flood control drainage capabilities. Therefore it can improve the environment of flood controlling ditches and water storage ponds, and reduce the threat level of flood damage to the city and the public. Although the drainage PSs will produce some noise when in operation, the affected area by the noise is small and can meet emission standards by damping and noise isolation protective measures.

4. There will build green belts on both sides of the road to the foodstuff processing base. While in the projects of the Luotuo Ridge and the pond in Chinese medicine Hospital there are the vegetation restoration work. So the whole project will increase the city green space for Huaiyuan County and thus improve the city's ecological environment, reduce the exposed soil of the area, improve the water conservation capacity, beautify of the urban landscape and increase urbanization speed and the people's living standards.

5. in the construction period, the engineering will occupy urban green land, and the construction dust, noise and so on will have adverse impact on urban social and ecological environment, air quality and noise at varying degrees. Therefore the evaluation here has suggested comprehensive measures for pollution control in the construction period. As long as managing strictly, taking prevention and mitigation measures, environmental impacts in the construction can be reduced minimal. Impacts in the construction period are temporary, most of the environment factors can be restored to the status quo level after the construction period ends.

6. In this project, public participation is serious and viable. Participants are all involved in voluntary. Public participation and the scope of the information in the media disclosed has provided the city public especially the affected agencies a convenient way to be aware of the project, and at the same time provided a good channel to know the demand of the public particularly the affected public's. In the public participation process, 100% of the public on this project are in a supportive




attitude, which fully express the desire of improving public transport current status. The public has also fully realized the project possible environmental issues in the periods of construction and operation.

7. To ensure effective control and mitigation of the project’s environmental impact, in construction and operation phase it is necessary to do environmental management and monitoring s standardized and scientifically. Strictly implement the environmental monitoring program in the construction and the operation stage, and environmental management measures, and accomplish the environmental training to the corresponding staff.

In summary, the construction of urban transport projects and flood control, drainage projects in Huaiyuan County with the World Bank loan works with a master development plan. The implementation of the project will play a positive role on the city's rapid developments .The environment impact of the project in the construction period will be temporary. In the operation period, the flood prevention project has no environmental impact. While the PSs and traffic to the foodstuff processing base will have some impact on the surrounding environment. Through the corresponding mitigation measures, it can be reduced to an acceptable level. Therefore, as long as the project strictly implement the environmental protection measures in the EIA report during the construction and the operation period, this project is feasible.

12.1.2.7 Huaishang Project

Pollution Source Analysis

1. The wastewater in the construction process includes production wastewater and the constructors’ sewage. Constructors’ sewage production is 65 tons/d at most. The main pollution source is atmospheric dust of the construction, machinery fuel emissions. The affected area is the construction site and along the road of transportation. The construction noise is from the PS, the road excavator, roller, concrete layer machines used in road engineering. The construction solid wastes include construction debris, trashed soil in the construction site, silt and the constructors’ garbage.

2. In operation period, environmental pollution mainly comes from the running noise of the drainage PSs at Beifei River, gate slag at the station and the living garbage of the workers. Gate slag production is 6,500t/a (moisture content of 80% -85%). Garbage, the production of 0.8t/a, is to be transported to garbage collection system, and to be dealt with by the Environmental sanitation department.




The main pollution of roads in operation comes mainly from car exhaust emissions, whose main ingredients are hydrocarbons, NOx, CO, vehicles noise, rain water pollution caused by road ground runoff.

Environmental Impact in the construction period

1. Construction dust is generally within scope of 100m to dust sources under wind direction. Sprinkler 4 ~ 5 times every day at the construction site conditions, its dust pollution scope can be reduced by the distance to 20 ~ 50m range.

2. At the construction site the main pollutant of the wastewater is SS. The proposed treatment method is natural precipitation, as to reuse the water for dust suppression sprinklers and concrete water conservation at the construction site. A small amount of wastewater unable to reuse will be discharged into a nearby water body after precipitation and meeting the emission standards. The sewage in Construction period is treated by small integration biochemical sewage treatment equipment. If it is directly discharged into the Huai River, it must meet Integrated Wastewater Discharge Standard of standard requirements of level 1.

3. The environmental impact of the construction noise is mainly piling stage. Ensure that noise at the construction boundary has met the standards. While at piling intervals, noise at 350m during daytime to the construction boundary should meet the standards, it is 80-100m outside the boundary during all the other stages. At a distance of 100m outside the construction site the residents will be influenced by the construction noise, while at a distance of 350m outside the construction site the residents will be influenced by the piling noise.

4. In the construction site, trashed silt and garbage are collected and handled by the environment sanitation department. It is prohibited to pile them in the coastal water bodies, to contaminate of groundwater and surface water body.

Impacts in Operation

1. When Roads are built and used, moving vehicles exhaust pollutant emissions of major pollutants for CO, NOx, CH. The affected distance is 20m to the road.

2. The main pollutants in road rainwater are SS, COD. Their concentration of pollutants reaches the maximum in the 0 to 15 minutes, and then reduced gradually. The water quality stabilized after an hour of raining. Therefore road rainwater collection system should be enhanced to avoid the surrounding water pollution risk.

3. When the Pump Station starts in flood season, noise at the distance of 10m is about 55dB, meets standard Class 2of Measuring Method of Environmental Noise of Urban Area (GB - 1993). For new roads, noise affected distance is 30 m outside the red line of the road.




4. In the operation period of drainage stations the total amount of the gate slag 6,500 t / year (moisture content of 80% -85%). The Staffs’ annual garbage production at the PS is 0.8t / a. It should be dealt with by sanitation workers.

12.2 Suggestions

12.2.1 Mohekou Industrial Park Project

In Mohekou Town industrial park, there are all industrial projects, and more concentrated. Without enough self-examination and park management capacity constraints, the products and most of the raw and auxiliary materials for the chemical raw materials or chemicals, inevitably leaks. It is usually a certain phenomena. In the storm season, a lot of the early rain runoff may contain a certain amount of chemical raw materials and reagents, and the production of untreated wastewater in a short period of time can not be effectively turned into the park sewage pipe network, it flow directly into the river via the overland flow, because of its complex contents and outfall near the Huai River, with no buffer facilities, the early part of the straight flow of rainfall into the river is more likely be water pollution risk generated.

To reduce the Mohekou water pollution in the chemical park estuary of the river and decrease the risk of pollution to a minimum, the EIA program design consideration to the early part of rainwater collection and disposal problems.

It is suggested to locate early rain buffer pool in the park, in order to conduct the initial rainwater collection and temporary storage, accordingly pipeline and the construction of rainwater collection will initially enter the sewage treatment plant for effective treatment.

Within the park, there are chemical industrial enterprises and special sewage water differs from a general sewage, water quality analysis of the sewage plant influent should be done and appropriate and effective treatment process should be introduced to ensure that the sewage plant effluent discharge standards. Meanwhile, the fluctuation and abnormal conditions of influent quality of the WWTP should be taken into consideration when the pretreatment of industries is not sufficiently effective. The treatment process should have some capability for adjustment and resistance to the shock.

Sewage plant tail water eventual destination is the Huai River. Once the sewage plant does not operate properly, tail water discharge will seriously affect the water quality of the Huai River. Therefore, the sewage treatment plant design recommendations consider many contingency plans, such as: water supply, electricity, water influent volume anomaly, flood control, no standby equipment failures and so on. In particular, the incident occurred when a corresponding




emergency treatment measures sewage plant to reduce non-normal condition of the adverse effects of the Huai River.

12.2.2 Xijiagou & Baligou Projects

According to Bengbu City Drainage Planning (2005 ~ 2020), the project is located south of regional sewerage system. In the South Sewage Treatment Plant planning completed in 2020, Xijiagou sewage treatment plants have been operating close to capacity. Thus, when Xijiagou, Baligou river improvement project is finished, the sewage in the south of Tushan Road is still no reasonable way to proceed. Although the river training works will be completed and Baligou and Xijiagou along the outfall for money-blocking, but the film in the region of untreated sewage will continue through different channels and ultimately into the seats of Xijiagou and Baligou, eventually the Huai River flows. Therefore the item on water environment improvement role will be greatly reduced, would not achieve the desired results. Therefore, the construction of the Bengbu City sewage treatment plant should speed up.

The EIA projects proposed in the construction of this project, start Chengnan sewage treatment plant construction projects. When Xijiagou and Baligou river training works finishes, while wastewater treatment plant has not yet completed, temporarily wastewater in the region take a seat in Xijiagou sewage or Yangtaizi sewage disposal system.

12.2.3 Longzi Lake Project

1. Desilting should strictly control Desilting depth, avoid Desilting Project on benthic sediments and submerged plants root which will cause serious damage.

2. Revetment natural and ecological revetment combination of the Longzi Lake along the berm for dressing, avoid the use of hard revetment and cutting surface ecosystems, affecting Longzi Lake coastal ecological environment.

3. Ensure the Desilting works results to the implementation, we recommend Lake coastal wastewater emissions control from the production, for the heavily polluting enterprises move out as soon as possible.

4. After completion of this project, it is strictly prohibited random grab for aquaculture around Longzi Lake to control the impact of agricultural non-point source pollution on the water quality of Longzi Lake.



peoples’republic of china - world bank€¦ · web view2008/01/09 · bieip project organization...

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