comprehensive emp study for devsari h.e. project …ueppcb.uk.gov.in/files/public...

COMPREHENSIVE EMP STUDY FOR

DEVSARI H.E. PROJECT (252 MW)

UTTARAKHAND

PLOT NO. 76 - C, SECTOR 18, GURGAON -122 015, HARYANA

AUGUST 2010

CONTENT

1. Introduction 1 2. Project details 1 3. Environmental baseline status 1 3.1 physio-chemical aspects 2

3.1.1 Meteorology 2 3.1.2 Geology 2 3.1.3 Seismology 2 3.1.4 Land use pattern 2 3.1.5 Soils 3

3.1.6 Water resources 3 3.1.7 Water quality 4

3.1.8 Ambient air quality 4 3.1.9 Noise environment 4

3.2 Ecological Aspects 4

3.2.1 Flora 4 3.2.2 Fauna 5 3.2.3 Aquatic Ecology and Fisheries 5

3.3 Socio-Economic Aspects 6 4. Prediction of Impacts 6

4.1 Impacts on Water Environment 6 4.2 Impacts on Air Environment 7 4.3 Impacts on Noise Environment 7 4.4 Impacts on Land Environment 8 4.5 Impacts on Ecology 8 4.6 Impacts on Aquatic Ecology 9 4.7 Impacts on Socio-Economic Environment 9

5. Environmental Management Plan 10

5.1 Compensatory Afforestation and Biodiversity Conservation 10 Plan

5.2 Catchment Area Treatment Plan 11 5.3 Fisheries Management Plan 11 5.4 Public Health Delivery System 12 5.5 Environmental Management in Labour Camps 13 5.6 Muck Management Plan 13

5.7 Restoration and Landscaping of Construction Sites 14 5.8 Environmental Management In Road Construction 14 5.9 Greenbelt Development Plan 14 5.10 Control of Air Pollution 14 5.11 Measures for Noise Control 15 5.12 Water Pollution Control 15

6. Resettlement and rehabilitation plan 15

6.1 Resettlement Plan 15 6.2 Rehabilitation Plan 16 6.3 Area Development Activities 17 6.4 Budget for Resettlement & Rehabilitation 17

7. Environmental Monitoring Programme 18 8. Disaster Management Plan 19 9. Cost for Implementing Environmental Management Plan & 20

Environmental Monitoring Programme

9.1 Cost for implementing environmental management plan 20 9.2 cost for implementing environmental monitoring programme 21

SJVNL Executive Summary of CEIA study for Devsari hydroelectric project

WAPCOS Centre for Environment 1

EXECUTIVE SUMMARY

1. INTRODUCTION

The Satluj Jal Vidyut Nigam Limited (SJVNL) proposes to develop the Devsari Electric Project on river Pindar in district Chamoli of Uttarakhand. The Devsari hydroelectric project has been contemplated as run off the river scheme which envisages construction of dam across river Pindar 1.75 km downstream (along river) from confluence of Pindar river with Kail Ganga and about 2.5 km by road on Tharali-Deval road. The underground power house is located near Simili Gad with a total length of Head Race Tunnel as 17903 m. The energy generation of 913.43 GWh at 90% dependable energy with 95 % plant availability and 1036.77 GWhr at 50% dependable energy is envisaged as a result of commissioning of the project. The project location map is enclosed as Figure-1. 2. PROJECT DETAILS The salient features of project are briefly described as below:

• 35.0 m (from river bed level) high gravity dam across river Pindar to provide a live storage of 3.21 M cum with FRL at El 1300 m and MDDL at El 1295 m;

• 17.903 km long and 6.90 m internal diameter head race tunnel (HRT).

• 78.00 m high 21.50 m internal diameter surge shaft.

• 248.67 m long 4.80 m internal diameter pressure shaft (trifurcating into three of 2.77 m)

• Underground power house having an installation of 3 Francis turbines generating units of 84 MW each operating under an average net head of 228.36 m.

• 240 m long tail race tunnel 8.5 m internal diameter leads to Pindar river upstream of confluence of Simili Gad with Pindar river.

The layout plan is enclosed as shown in Figure-2. 3. ENVIRONMENTAL BASELINE STATUS The study area covered as a part of the EIA study is as below:

• Land to be acquired for various project appurtenances including reservoir submergence

• 10 km on either side from the periphery of reservoir submergence

• Downstream of the barrage site 10 km on either side of various project appurtenances

• Catchment area intercepted at barrage site



The baseline status is described briefly in the following sections. 3.1 PHYSICO-CHEMICAL ASPECTS 3.1.1 Meteorology The climatic conditions in the project area and its surroundings vary with elevation. The variations of exposure to sunlight and to rain bearing winds produce a very intricate pattern of local climate in the project area. In summer months, (March-June) locally called rori, valley areas experience hot climatic conditions, while the high mountain areas, experience chilly cold climate. During summer season, local thunderstorms are frequent, which is often accompanied by heavy hail. The monsoons or rainy season locally called chaumas or baskal commences from last week of June continuing upto end of September. Majority of rainfall is received during mid-July to mid-August. The sky remains generally clear in the middle of September and October. The winter season locally known as hyund in Garhwal himalayas, lasts from December to February. At higher reaches snowfall is common during winter months. The total annual rainfall is about 1225.6 mm per annum. The maximum rainfall is received in the months of July and August. About 80% of the rainfall is received under the influence of south-west monsoons during the months from July to September. On an average, there are about 88 rainy days in a year. 3.1.2 Geology Uttarakhand Himalaya occurring in the central part of the Himalayan folded belt has the rock type varying in age from Proterozoic to Late tertiary period, disposed in four major tectonic belts designated as Foothill Siwalik belt, Lesser Himalayan belt, Central Crystalline and Tethyan belt. Two heterogeneous tectonic divisions, one representing the epigeosynclinal orogeny and the other indicating an epiplatform or extra geosynclinal orogeny are possibly juxtaposed. 3.1.3 Seismology The project area falls in under seismic zone-IV, as per IS: 1894: 2002. 3.1.4 Land Use Pattern The land use pattern of the study area has been studied through digital satellite imagery data. The land-use pattern of the study area as per the satellite data is given in Table-1.



TABLE-1 Landuse pattern of the study area

Landuse Cover Area (ha) Percentage of study area

Dense vegetation 43463 61.61

Open vegetation 13040 18.48

Agricultural Land 11140 15.79

Scrubs 2396 3.40

River Bed 344 0.49

Settlements 165 0.23

Total 70548 100.00

It is evident from Table-1, that the major land use category in the study area is forest, which accounts for almost 80.09% of the study area. The agriculture land accounts for about 15.79% of the study area. The area under water bodies (mainly river bed) account for about 0.49% of the study area. The area under settlement is about 0.23% of the study area. 3.1.5 Soils

The pH of soil at various sites lies within neutral range. The levels of NPK indicate moderate to high soil productivity. The sodium levels do not indicate any potential for soil salinization or adverse impacts on soil productivity. 3.1.6 Water Resources As per the Detailed Project Report (DPR), the design flood has been estimated using various methods for flood frequency analysis is given in Table-4.2.

TABLE-2

Discharge for different return period at dam site

Return Period (Years) Discharge (cumec)

10000 3023

5000 2725

1000 2115

500 1883

100 1406

50 1223

25 1053

10 841

5 687

2 479 Source: Detailed Project Report



3.1.7 Water Quality Ambient air quality monitoring has been carried out with a frequency of two samples per week at three locations for three seasons. The BOD values are well within the permissible limits, which indicate the absence of organic pollution loading. This is mainly due to the low population density and absence of industries in the area. The low COD values also indicate the absence of chemical pollution loading in the area. The marginal quantity of pollution load, which enters river Pindar, gets diluted. In fact, even for the minimum flow, there is more than adequate water available for dilution. Level of heavy metal in the water of the project area is below the permissible limit used for drinking purposes. Total Coliform count is very low in the study area. It can be concluded that water quality in the area is quite good. 3.1.8 Ambient Air Quality Ambient air quality monitoring has been carried out with a frequency of two samples per week at three locations for three seasons namely winter, summer and post-monsoon. The parameters monitored were Suspended Particulate Matter (SPM), Respirable Particulate Matter (RPM), Sulphur dioxide (SO2) and Oxides of Nitrogen (NOx). The values of these parameters were well below the permissible limits specified for residential, rural and other areas. The absence of industries, low vehicular traffic and low population density can be attributed for good ambient air quality in the project area. 3.1.9 Noise Environment The noise level in post monsoon season at various sampling stations ranged from 35.5 to 38 dB(A). The noise level in winter and summer seasons at various sampling stations ranged from 34 to 37 dB(A) and 39.4 to 40.5 dB(A) respectively. The noise level observed during monitoring conducted for various seasons were well within the permissible limit specified for residential area. 3.2 ECOLOGICAL ASPECTS 3.2.1 Flora The diversion structure site lies in Uni and Devsari Reserve Forest. The vegetation in the study area varies with altitude and topography. The elevation in the study area ranges from 1000 to 2000 m. The major forest category observed in the study area and its vicinity are listed as below:

• montane forest

• sub montane forest The major forest type at the study area is montane forest. The floral compostion of the submergence area includes the trees of Albizia julibrissin, Alnus nepalensis,



Bauhinia variegata, Cinnamomum tamla, Gardenia spinesa, Litsea chinensis, Lyonia ovulifolia, Pinus roxburghii, Pyrus pashia, Quercus leucotrichophora, Rhododendron arboretum and Toona serrata with the dominance of Pinus roxburghii. The dominant tree species at the power house site are Pinus roxburghii, Tuna serrata, Alnus nepalensis, Lyonia ovulifolia and Quercus leucotrichophora. 3.2.2 Fauna No national park, wildlife sanctuary or biosphere reserve is observed in the project area and the study area. The proposed project area is devoid of dense tree cover or vegetation. No major faunal species is reported in the project area.However, within the study area, various faunal species are reported. The main wildlife species found in the area are jackal, jungle cat, barking deer, goral and other smaller mammals. Among birds, Indian Myena, Eagle Owl, Rock Pigeon, Jungle Crow, House crow are observed. in addition to these, a number of reptiles, amphibian are also found. 3.2.3 Aquatic Ecology And Fisheries (A) Aquatic Ecology The aquatic analysis of Pindar River in the stretch of Devsari HEP were conducted for post-monsoon season (October, 2006), winter season (February, 2007) and summer (May, 2007) at all the ten sampling sites. Periphyton and Phytoplankton: The Pindar River, a metarhithronic stretch of the river, is represented by rapids and pools in the entire stretch of the Devsari HEP area. Dominance of periphyton were present in the rapids, while, stray numbers of phytoplankton were present in the pools. Periphyton were represented by 27 members of the families of Bacillariophyceae, Chlorophyceae, and Myxophyceae. However, only 14 members of phytoplankton were represented by the families of Bacillariophyceae, Cholorophyceae and Myxophyceae. Zooplankton: The Pindar River, a metarhithronic stretch of the river, is represented by rapids and pools in the entire stretch of the Devsari HEP area. Dominance of periphyton were present in the rapids, while, stray numbers of phytoplankton were present in the pools. Periphyton were represented by 27 members of the families of Bacillariophyceae, Chlorophyceae, and Myxophyceae. However, only 14 members of phytoplankton were represented by the families of Bacillariophyceae, Cholorophyceae and Myxophyceae.

(B) Fisheries

Fishery survey was conducted during October 2006 (post-monsoon), February 2007 (winter) and May 2007 (summer) with the help of local fishermen using castnet in the river Pindar. The experimental fishing revealed that snow trout contributes 65% to the total fish catch composition. Mahaseer species contribute 18% to the total fish catch and the rest 17% is contributed by other species. The growth of the coldwater



fish is also very poor due to low temperature and scarcity of food resources for fish. There is no specific spawning and breeding grounds observed in the Pindar in the project area. Quite a few sites were common for feeding where riparian vegetation was rich with undisturbed bottom substrates, which act as cover for fish. Therefore, present ecological survey revealed that there is no substantive loss of fish habitat due to the construction of Devsari HEP. 3.3 SOCIO-ECONOMIC ASPECTS

The total population of the study area is 20,023. The percentage of male and female population is 49.8% and 51.2%. The average sex ratio (number of females per 1000 males) and family size in the SAVs are 1008 and 5 respectively. The average overall tribal population constitutes about 1.1% of the total population of the SAVs. The Scheduled caste population also constitutes a larger proportion of 18.9% of the total population within the SAVs. However, population belonging to the general castes is observed to be the dominant caste category, which comprises of 79.9% of the total population in the SAVs. The overall average literacy rate in the SAVs is 66.9%. Male and female literacy rate accounts for about 79.1% and 54.7% respectively. About 44% of the total population in the SAVs is engaged in different economically productive activities, and have been designated as “Total Workers” by the Census. On the other hand, remaining 56% are classified as Non-workers or dependent population. Among the working population, about 73.1% constitute the Main workers, while the Marginal workers comprise of about 26.9%. 4. PREDICTION OF IMPACTS 4.1 IMPACTS ON WATER ENVIRONMENT Water quality A) Construction phase Sewage from labour colony: The peak migrant population is likely to be of the order of 3,200. The quantum of sewage generated due to this population is expected to be of the order of 0.18 mld. Even at minimum flow, sufficient dilution is available. Thus, no significant impact on water quality of river Pindar is envisaged during construction phase. Effluent from crushers and other sources: The effluent from the crushers and other sources, like adit, tunnel, would contain high suspended solids. It is proposed to treat the effluents in settling tanks. Thus, no significant impact is envisaged.



B) Operation phase Effluent from project colony: During operation phase, only a small number of O&M staff will reside in the colony. The sewage generated would be provided biological treatment before discharge. Sediments The proposed project is envisaged as a runoff the river scheme with a barrage. At regular intervals, the gates of the barrage shall be opened to flush the sediments. Thus, in the proposed project, sedimentation problems are not anticipated. Water Resources and downstream users The river stretch downstream of the barrage site upto the confluence point of tail race discharge will have reduced flow upto the confluence of tail race tunnel. In the intervening stretch, the flow shall be implemented by (i) releases of flushing discharges from desilting chamber, (ii) contribution of flow from various streams/nallahs in the confluence of tail race disposal and (iii) gates of barrage will remain open leading to continuous flow in the downstream river stretch during monsoon months. The reduction in flow or drying of the river in the intervening stretch is not likely to have any adverse impact on the downstream users. This is mainly because of the fact that settlements/ villages within this dry stretch are not dependent on the water of river Pindar, as the villagers use water of small streams or nallahs flowing adjacent to their habitation. 4.2 IMPACTS ON AIR ENVIRONMENT Pollution due to fuel combustion: The major construction equipment would be operated through electricity. Therefore, fossil fuel combustion would be minimal. Diesel would be used only in contingency. Thus, no significant impact on ambient air quality is expected as a result of operation of various construction equipment. No significant impact is envisaged. Emissions from various crushers: During crushing operations, there would be emissions of dust particles. Minimal impact is expected during construction phase. Therefore, commissioning of cyclone is suggested. Further, the labour camps would be located on the leeward side of the crusher with respect to predominant wind directions. 4.3 IMPACTS ON NOISE ENVIRONMENT The operation of construction equipment is likely to have insignificant impact on the ambient noise level. However, blasting can have adverse impact on wildlife, especially along the alignment of the tunnel portion. Appropriate mitigation measure has been suggested as a part of EMP.



4.4 IMPACTS ON LAND ENVIRONMENT Impacts due to quarrying : In a hilly terrain, quarrying is normally done by cutting a face of the hill. A permanent scar is likely to be left, once quarrying activities are over. With the passage of time, they become a potential source of landslide. Thus it is necessary to implement appropriate slope stabilization and quarry reclamation measures. Impacts due to muck disposal : A large quantity of muck is expected to be generated as a result of tunneling operations, construction of roads, etc. The same requires to be suitably disposed. Normally, muck is deposited in low lying areas or depressions. Proper disposal and reclamation has been suggested as a part of EMP. Impacts due to land acquisition: The total land to be acquired for the project is 239.382 ha. A part of this land is required for labour camps, quarry sites, muck disposal storage of construction material, siting of construction equipment, which will be required temporarily and returned once the construction phase is over. Permanent acquisition of land is required for barrage axis, submergence area, project colony, etc. 4.5 IMPACTS ON ECOLOGY Terrestrial Ecology Increased human interferences: A large population (3,200) is likely to congregate in the area during the project construction phase. This population residing in the area may use fuel wood (if no alternate fuel is provided). Therefore, alternate fuel should be provided to such population. Further, community kitchens should be provided using LPG or diesel as fuel. Acquisition of forest land: The total land to be acquired is about 239.382 ha. Compensatory afforestation is proposed as a part of compensatory afforestation plan in the EMP. Disturbance to wildlife: The operation of various construction equipment and blasting is likely to generate noise. These activities can lead to some disturbance to wildlife population. Further, the project area does not fall in the migratory routes of animals. Mitigation measures to minimize such impacts have been suggested in the EMP.



4.6 IMPACTS ON AQUATIC ECOLOGY A) Construction phase During construction phase wastewater mostly from domestic source will be discharged mostly from various camps of workers actively engaged in the project area. Around 0.22 mld of water is required for the workers during the peak construction phase out of which 80% (i.e. about 0.18 mld) will be discharged back to the river as wastes, more or less as a point sources from various congregation sites where workers will reside. The average minimum flow during lean season is about 2.66 cumecs. However, sufficient water for dilution will be available in Pindar to keep the DO of the river to significantly high levels.

B) Operation phase The completion of Devsari hydroelectric Project would bring about significant changes in the riverine ecology, as the river transforms from a fast-flowing water system to a quiescent lacustrine environment. Such an alteration of the habitat would bring changes in physical, chemical and biotic life. Among the biotic communities, certain species can survive the transitional phase and can adapt to the changed riverine habitat. There are other species amongst the biotic communities, which, however, for varied reasons related to feeding and reproductive characteristics cannot acclimatize to the changed environment, and may disappear in the early years of impoundment of water. The micro-biotic organisms especially diatoms, blue-green and green algae before the operation of project, have their habitats beneath boulders, stones, fallen logs along the river, where depth is such that light penetration can take place. But with the damming of river, these organisms may perish as a result of increase in depth. 4.7 IMPACTS ON SOCIO-ECONOMIC ENVIRONMENT Impacts due to influx of labour force: During the construction phase a large labour force, including skilled, semi-skilled and un-skilled labour force of the order of about 3200 persons, is expected to immigrate into the project area. During the construction phase, the most important negative impact would be due to the temporary settling of labour force leading to filth, in terms of domestic wastewater, human waste, etc. Economic impacts of the project Apart from direct employment, the opportunities for indirect employment will also be generated which would provide great impetus to the economy of the local area. Various types of business like shops, food-stall, tea stalls, etc. Besides a variety of suppliers, traders, transporters will concentrate here and benefit immensely as demand will increase significantly for almost all types of goods and services. The locals will avail these opportunities arising from the project and increase their income levels.



It is observed that about 27.806 ha of private land is proposed to be acquired from 16 villages, namely, Sarkot, Shoding, Modra laga Padmalla, Talore, Padmalla, Icholi, Sailkhola, Kail, Devsari, Purna, Tharali, Chepru, Pangad, Gadkot, Sahu Gaon, and Sonala. It is observed that about 491 project affected families (PAFs) are likely to lose land (agricultural and/or homestead) in varying proportions. The details of PAPs losing land is depicted in Table – 3.

TABLE – 3 Village-wise details of project affected families

Village Name Losing only Land

Losing only Homestead

Losing both Land and Homestead

Total

Sarkot (Shoding) 0 0 26 26

Shoding 18 0 0 18

Modra laga Padmalla 5 0 0 5

Talore 15 0 0 15

Padmalla 18 0 0 18

Icholi 8 0 0 8

Sailkhola 38 0 0 38

Kail 29 0 0 29

Devsari 12 0 0 12

Purna 164 0 0 164

Tharali 20 0 0 20

Chepru 22 0 0 22

Pangad 39 0 0 39

Gadkot 46 0 0 46

Sahu Gaon 8 0 0 8

Sonala 23 0 0 23

Total 465 0 26 491

5. ENVIRONMENTAL MANAGEMENT PLAN 5.1 COMPENSATORY AFFORESTATION AND BIODIVERSITY CONSERVATION

PLAN

The total land to be acquired for the project including submergence area and other project appurtenance is about 239.382 ha. It is proposed to afforest double the amount of forestland being acquired for the project. Thus, a total of 479ha of land needs to be afforested. The afforestation work is to be done by the Forest Department. In addition, the project proponent will pay Net Present Value (NPV) and cost of trees It is proposed to develop 2 check post near dam site, which shall be operational during construction phase. Each check post will have 4 guards and 1 range officer to ensure that poaching is strictly checked in the area. The range officer will supervise the guards of various check posts.It is recommended that 3 check posts be



developed in the major construction area i.e. one near intake and one near power house along the boundary of labour camps to coordinate anti-poaching activities in the area. 5.2 CATCHMENT AREA TREATMENT PLAN The catchment area considered for treatment under the proposed Devsari hydroelectric project is 113,800 ha. The catchment area has been divided into 11 sub-watersheds in the present study. In the present study `Silt Yield Index’ (SYI), method has been used. CAT plan has been suggested for very high and high erosion category, as a part of the present EIA study, the expenses of which have to be borne by project proponents. No area under very high erosion category is observed in the proposed project. The area under high erosion categories is 26094 ha. The cost earmarked for Catchment Area Treatment is Rs. 90.54 million which has to be borne by project proponent. 5.3 FISHERIES MANAGEMENT PLAN 5.3.1 Release of minimum flow Water will be diverted through a tunnel for power generation and the tail race discharge outfall in Pindar river about 18 km downstream from the dam site. The river stretch downstream of the barrage site upto the confluence point of tailrace discharge (about 22 km) will have reduced flow. The flow will be augmented by contribution of flow by release of 15% of average of lean discharge (2.97 cumecs) for ecological discharge and in addition to this nine streams are also adding discharge of 1.75 cumecs. The overall discharge of approximately (2.97 + 1.75) 4.72 cumecs will be available in the pindar river. The flow in various streams in the intervening stretch downstream of dam site upto confluence point of tail race discharge is given in Table-4.

TABLE-4 Lean season flow in the intervening stretch between barrage site and tail race

disposal point

Name Distance/Location of confluence of river from Dam axis (km)

Flow (cumec)

NadKesari Nallah 0.5 0.02

Songad Nallah 9.5 0.15

Paranmati Nallah 12.0 1.00

Bishwehari Nallah 12.5 0.01

Suna Nallah 13.0 0.01

Nuana Nallah 17.0 0.06

Baram Gad(Kulsari Nallah)

20.0 0.20

Chor Gad (Pan Gad) 20.55 0.20

Simli Gad 23 0.15



The reduction in flow or drying of the river in the intervening stretch is not likely to have any adverse impact on the downstream users. This is mainly because of the fact that settlements/ villages within this dry stretch are not dependent on the water of river Pindar, as the villagers use water of small streams or nallahs flowing adjacent to their habitation. 5.3.2 Sustenance of Endemic Fisheries Supplementary stocking: Since, Snow trout is categorised as vulnerable species amongst the threatened fishes of India, scientific management of the existing stock needs be adopted. It is proposed to implement supplementary stocking programmes for the project area. In addition to reservoir area, it is proposed to stock river Devasari for a length of 10 km each on the upstream and the downstream side of the dam site. The rate of stocking is proposed as 100 fingerlings of about 30 mm size per km. For reservoir area, the rate of stocking could be 200 fingerlings of about 30 mm size per ha. The stocking can be done annually by the Fisheries Department, State Government of Uttarakhand. To achieve this objective, facilities to produce seed of trout need to be developed at suitable sites. 5.4 PUBLIC HEALTH DELIVERY SYSTEM 5.4.1 Control of Malaria Various Primary Health Centres in the nearby villages and Hospital at District Head Quarters can coordinate the anti-malarial operations in association with the project authorities and implement the following measures:

• Site selected for habitation of workers should not be in the path of natural drainage.

• Adequate drainage system to dispose storm water drainage from the labour colonies shall be provided.

• Adequate vaccination and immunization facilities should be provided for workers at the construction site.

• The labour camps and resettlement sites should be at least 2 km away from a main water body or quarry areas.

5.4.2 Development of Medical Facilities A first aid post is to be provided at major construction sites, so that workers are

immediately attended to in case of an injury or accident.



This first-aid post will have at least the following facilities:

- First aid box with essential medicines including ORS packets - First aid appliances-splints and dressing materials - Stretcher, wheel chair, etc. The first-aid post can be housed in temporarily erected structure and should be managed by one Health Assistant and assisted by one dresser/first aid attendant. Doctors from the dispensary can attend First Aid post regularly every day at a fixed time. Communication link between the dispensary and then first-aid post shall be established, so as to enable doctors from dispensary to reach the work site in case of an emergency. The first aid post shall have facilities such as fire fighting equipment, telephone connection, one vehicle or ambulance van for effective functioning. 5.5 ENVIRONMENTALMANAGEMENT IN LABOUR CAMPS The labour camps shall have the following facilities: � Provision of Heating � Provision of Water Supply � Provision of fuel in labour camps � Sanitation and Sewage Treatment Facilities in the form of community toilets

and a sewage treatment plant. � Adequate facilities for collection, conveyance and disposal of solid waste shall be developed 5.6 MUCK MANAGEMENT PLAN As per the existing proposal for the construction of Devsari hydroelectric project about 1.98 Mm3 of muck is to be generated. It is proposed that 1.52 Mm3 of muck shall be utilized for various project works, The balance quantity of muck shall be disposed off at seven (7) muck disposal sites with a total area of about 22 ha. The dumping of muck will be done in the scientific manner by providing appropriate protection walls with deep foundations so that muck will not flow and washed away in the river Masonry work, create work and check dam will also be provided wherever necessary in order to avoid the chances of soil erosion and to ensure flow of silt, free water. Besides these engineering measures, proper plantation will be done at the dumping sites for reclamation of the dumping areas.



5.7 RESTORATION AND LANDSCAPING OF CONSTRUCTION SITES 5.7.1 Restoration Plan for Quarry Site and Borrow Area The following biological and engineering measures are suggested for the restoration of quarry site:

• Garland drains around quarry site to capture the runoff and divert the same to the nearest natural drain.

• Construction of concrete guards checks the soil erosion of the area.

• The pit formed after excavation be filled with small rocks, sand and farmyard manure.

• Grass slabs will be placed to stabilize and to check the surface runoff of water and loose soil.

• Bench terracing of quarry sites once extraction of construction material is completed.

5.7.2 Landscaping and Restoration Plan for other areas The working area of barrage site, power house complex colony area have been selected for beautification of the project area after construction is over. 5.8 ENVIRONMENTAL MANAGEMENT IN ROAD CONSTRUCTION The project construction would entail significant vehicular movement for transportation of large construction material, heavy construction equipment. Some of the existing roads in the project area, would require widening. Steeply sloping banks are liable to landslides, which can largely be controlled by provision of suitable drainage. As part of environmental management of road, landslides are proposed to be stabilized by engineering methods or bio-engineering measures or a combination of both. 5.9 GREENBELT DEVLOPMENT PLAN It is proposed to develop greenbelt around the periphery of various project appurtenances, selected stretches along reservoir periphery. This work would be completed in two years, which includes nursery creation, advance works, actual plantation and maintenance. The work will be carried out by Forest Department. 5.10 CONTROL OF AIR POLLTION Appropriate measures have been recommended to control air pollution from various sources, e.g. emissions from DG sets, fugitive emissions, etc.



5.11 MEASURES FOR NOISE CONTROL Workers operating in high noise areas/ activities should be provided with effective personal protective measures such as ear muffs or ear plugs to be worn during periods of exposure. The other measures to control noise could be as follows:

• equipment and machineries should be maintained regularly to keep the noise generation at the design level;

• silencers and mufflers of the individual machineries to be regularly checked by the project proponent;

• implementation of measures to control noise and DG sets

• exposure of workers to high noise areas, should be limited as per maximum exposure periods specified by OSHA.

5.12 WATER POLLUTION CONTROL Control of water pollution during construction phase It is recommended to construct settling tanks of adequate size at two or three sites to settle the suspended impurities in the effluents generated from crushers and tunneling sites. The sludge from the various settling tanks can be collected once in 15 days and disposed at the site designed for disposal of solid wastes from the labour camps. The sludge after drying could also be used as cover material for landfill disposal site. Control of water pollution during operation phase It is recommended to provide a suitable Sewage Treatment Plant (STP) to treat the sewage generated from the colony. 6. RESETTLEMENT AND REHABILITATION PLAN The Resettlement and Rehabilitation Plan for the Project Affected Families of the proposed Devsari hydro-electric project has been prepared in line with the provisions and/or guidelines as given in SJVNL Resettlement and Rehabilitation Policy, 2010.

6.1 RESETTLEMENT PLAN The measures recommended for families losing land are given as below:

• Each family losing homestead be given a plot upto 250 sq.m area plus construction grant @ Rs. 5000 per sqm limited to carpet area 150 sqm ;Or if they want to construct their house on their own land, they shall be provided construction grant @Rs. 6000 per sqm limited to carpet area 150 sqm



• Each family losing homestead shall be provided Rs. 2500 pm as a rental allowance for a period upto 18 months; or Shall be provided leased transit accommodation for a period upto 18 months.

• Each family losing homestead shall be provided shifting grant of Rs. 20000/

• Each family losing homestead shall be allowed to take away salvageable of the acquired house

• Financial assistance of Rs. 20000/ towards cattle shed, if acquired In addition to the aforesaid resettlement benefits, the displaced families shall be provided the basic amenities and infrastructure facilities at the resettlement site as per norms outlined in SJVNL Resettlement and Rehabilitation Policy, 2010. These facilities are listed as below:

� WBM approach and internal road � Power supply � Piped water supply � Sanitation facilities � Higher secondary school with play ground � Community hall � Panchayat building � Place of worship � Post office � Fair price shop � Space for market � Park and play ground

6.2 REHABILITATION PLAN The details of rehabilitation benefits extended to the PAFs are summarized below:

• The rehabilitation grant equivalent to 2000 days MAW or Rs. 2.0 lacs, whichever higher shall be provided to PAFs

• Subsistence allowance equivalent to 30 days of MAW per month or Rs. 3000 per month whichever higher for a period of one year shall be provided.

• ST PAFs shall be provided additional financial assistance equivalent to 500 days MAW or Rs. 50000 whichever is higher towards loss of customary rights.

• Displaced shopkeepers shall be provided shops in Project Township or provided shop plots upto area 250 sqm. If shop/ shop plot not provided then they shall be provided construction assistance @ Rs. 5000 per sqm limited to Rs. 2. Lacs for construction of new shop.

• Self employed PAFs shall be provided one time financial assistance of Rs. 50,000/- to construct shed to restart their business.

• Vulnerable group families Shall be provided lifelong pension @Rs.10,000 per year



6.3 AREA DEVELOPMENT ACTVITES

The area development activities for the project affected panchayats and an amount Rs. 37 million has been earmarked for these developmental activities.

Further, it is also suggested to incorporate a recurring annual budget plan during the construction period of the project for miscellaneous infrastructure works in the nearby villages other than project affected villages, which could include village paths, drinking water facilities, community services, education, health, awareness camps for agricultural, horticultural and veterinary services etc. During the construction phase, which is likely to last for about 5 years, an annual recurring budget of Rs. 20.00 million/ year may be earmarked. Similarly, a similar budget of Rs. 10.00 million per year may be ear-marked during the operation phase, which is expected to last about 5 years. Thus, a provision of Rs. 150 million (Rs. 20 million x 5 years + Rs. 10.00 million x 5 years) may be earmarked for this purpose.

A total provision of Rs. 0.2 million per annum for a period of 10 years, i.e. Rs 2.0 million is also earmarked for providing health services to PAFs.

6.4 BUDGET FOR RESETTLEMENT & REHABILITATION

A total budget of Rs. 356.02 million is required for implementation of Resettlement and Rehabilitation Plan. The details are given in Table 5.

TABLE-5 Budgetary estimate for implementation of R&R Plan

S. No Activities Cost

(Rs. million)

Cost for Rehabilitation Plan

1 Rehabilitation Plan * 132.21

2 Resettlement Plan 36.09

3 Area Development Activities ** 37.00

4 Budget for grant to nearby villages 150.00

5 Post Project Monitoring 0.90

Grand Total 356.20 Note: * Provision for pension to vulnerable group to be spent per year, hence has been excluded for the one time cost for implementation of Rehabilitation Plan ** Provision for health services to be spent per year, hence has been excluded for the one time cost for implementation of Area Development Activities



7. ENVIRONMENTAL MONITORING PROGRAMME The Environmental Monitoring Programme during construction and operation phase is given in Tables 6 and 7 respectively.

TABLE-6 Summary of Environmental Monitoring Programme during

Project Construction Phase

S. No.

Item Parameters Frequency Location

1. Effluent from septic tanks

pH, BOD, COD, TSS, TDS

Once every month Before and after treatment from septic tank

2. Water-related diseases

Identification of water related diseases, adequacy of local vector control and curative measure, etc.

Three times a year

Labour camps and colonies

3. Air quality SPM, RPM, SO2 and NOx

Once every season

At major construction sites

4. Noise Equivalent noise level (Leq)

Once in three months

At major construction sites

5. Meteorological aspects

Wind direction & velocity temperature humidity, rain

Once every season

At two of the ambient air quality sampling sites

TABLE-7

Summary of Environmental Monitoring Programme during Project Operation Phase

S. No. Items Parameters Frequency Location

1. Water pH, Temperature, EC, Turbidity, Total Dissolved Solids, Calcium, Magnesium, Total Hardness, Chlorides, Sulphates, Nitrates, DO, COD, BOD, Iron, Zinc, Manganese

Thrice a year

• 1 km upstream of reservoir

• Reservoir area

• 1, 3 and 5 km downstream of dam site

2. Effluent from Aerated Lagoon

pH, BOD, COD, TSS, TDS

Once every

• Before and after treatment from



S. No. Items Parameters Frequency Location

week STP

3. Water related diseases

Identification of water related diseases, sites, adequacy of local vector control measures, etc.

Three times in a year

• Villages adjacent to project sites

4. Terrestrial Ecology Status of afforestation programme of green belt development

Once in a year

-

5. Aquatic ecology Phytoplanktons, zooplanktons, benthic life, fish composition

Three time in a year

• 1 km upstream of reservoir

• Reservoir area

• 1, 3 and 5 km downstream of dam site

8. DISASTER MANAGEMENT PLAN

The emergency planning for dam break scenario is devised on the basis of results of dam break analysis mainly the travel time of flood wave to various locations in the downstream stretch of the river. It is inferred form the analysis that in case of main dam failure the flood peak discharge as it propagates through the valley on d/s shall partly affect eleven (11) and seven (07) settlements on left and right bank respectively. The flood wave shall reach the fifth km within 18 minutes. However, the flood wave shall also inundate some portion of Narain Bagar – Tharali Road at such stretches which are very close to the river. In view of the fact that even upto 25 km d/s of the dam upto Narain Bagar, settlements very near to the river shall be partially affected, a disaster management plan is warranted. Besides this due to the breaking of the dam the major risk shall be to the traffic on Narain Bagar – Tharali road and to the persons who have for some reason or the other have entered the river bed. The plan is, therefore, based on such measures, which are purely preventive in nature. The plan comprises of the following:

• Preparation of Dam Safety and Maintenance Manual

• Emergency Action Plan (EAP)

• Administration and Procedural Aspects

• Preventive Action

• Communication System

• Evacuations Plans

• Public Awareness for Disaster Mitigation

• Management after receding of Flood Water



• Notifications

• Communication between Different Projects

The budget for different activities required to be carried out for mitigation and prevention of dam break hazard exclusively from the dam is given in Table-8.

TABLE-8

Cost Estimate for Implementing DMP S. No Particular Cost (Rs. million)

1. Installation of alert system in control room 0.5

2. Setting up of communication system between u/s and d/s of project

2.0

3. Setting up of communication system between dam and d/s settlements

2.5

4. Public information system 0.5

5. Setting up of a seismic observatory at dam site 4.0

6. Training and miscellaneous 0.5

Total 10.0

9. COST FOR IMPLEMENTING ENVIRONMENTAL MANAGEMENT PLAN & ENVIRONMENTAL MONITORING PROGRAMME 9.1 Cost for implementing Environmental Management Plan The total amount to be spent for implementation of Environmental Management Plan (EMP) would be Rs. 732.0 million. The cost is exclusive of the cost to be provided for cost of trees which is to be finalized by the Forest Department, as part of Forestry Clearance. The details of the cost are given in Table-9.

TABLE-8

Cost for implementing Environmental Management Plan

S. No. Item Cost (Rs. million)

1 Biodiversity conservation plan 166.67

2 Catchment Area Treatment Plan 90.54

3 Sustenance of riverine fisheries 16.05

4 Public health/Health delivery system 16.94

5 Environmental management in labour camps 20.28

6. Stabilization of muck disposal sites 15.00

7. Landscaping and Restoration of construction area 9.29

8. Environmental management in road construction 11.70

9. Greenbelt development 2.00

10 Control of Air pollution 7.09

11. Control for noise 1.10

12. Resettlement and Rehabilitation Plan 356.20



S. No. Item Cost (Rs. million)

13. Public Awareness Program 5.00

14 Implementation of Environmental Monitoring Programme during construction stage (Refer Table-10)

3.24

15 Purchase of meteorological instruments and noise meter 0.46

16 Disaster Management Plan 10.00

Total 731.56 say Rs. 732.0 million

9.2 Cost for Implementing Environmental Monitoring Proramme The cost required for implementation of Environmental Monitoring programme during project construction phase is Rs. 3.24 million. The details are given in Table-10.

TABLE-10

Cost for implementing Environmental Monitoring Programme during project construction phase

Item Cost (Rs. million)

Effluent from labour camps 1.17

Air quality monitoring 1.46

Incidence of water related diseases 0.61

Total 3.24

The cost required for implementation of the Environmental Monitoring Programme during operation phase is the order of Rs.1.21 million/year. A 10% annual price increase may be considered for every year. The details are given in Table-11.

TABLE-11

Cost for implementing Environmental Monitoring Programme during project operation phase

Item Cost (Rs. million/year)

Water quality and effluent from project colony 0.21

Ecology 0.30

Riverine fisheries 0.60

Incidence of water related diseases 0.10

Total 1.21

comprehensive emp study for devsari h.e. project …ueppcb.uk.gov.in/files/public...

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