1 executive summary · pdf file · 2017-10-11during manufacturing of process of...
TRANSCRIPT
M/S. GACL IN JV
WITH NALCO DRAFT EIA FOR PROPOSED NEW CHLOR-ALKALI PLANT, CPP & SYNTHETIC ORGANIC
CHEMICAL UNITS AT PLOT NO.: D II/9, GIDC, DAHEJ SUMMARY AND
CONCLUSION
KADAM ENVIRONMENTAL CONSULTANTS | SEPTEMBER 2017 1
1 EXECUTIVE SUMMARY
This executive summary provides overall justification for implementation of the project, explains how adverse
effects shall be mitigated. It summarizes the findings of the EIA study and is structured in accordance with Terms
of References (ToRs) issued by State Level Expert Appraisal Committee –Gujarat, in their Letter Ref: EIA-10-2016-
7531-E 2127 dated 14th September, 2016 and TOR Amendment Letter No. /SEIAA/GUJ/EC/5(f), 4(d) & 1(d) / 475
/2017 dated 29th April, 2017.
1.1 PROJECT DESCRIPTION
Gujarat Alkalies and Chemicals Limited (GACL) was incorporated on 29th March 1973 in the State of Gujarat by
Gujarat Industrial Investment Corporation Limited (GIIC), a wholly owned company of Govt. of Gujarat, as a Core
Promoter.
Proposed Project falls in category including Project / Activity: “4(d), Chlor-Alkali Industry”, schedule
“Manufacturing/fabrication” and Project or Activity “5(f), Synthetic Organic Chemicals Industry”, schedule “Mining,
Extraction of Natural Resources and Power Generation, Project or Activity “1(d), Thermal Power Plants”, which shall
be treated as Category “B”.
1.1.1 Proposed Project
Gujarat Alkalies and Chemicals Ltd. (GACL) proposes setting up of New Chlor-Alkali Plant and Coal Based Captive
Power Plant in JV with NALCO along with Synthetic Organic Chemical Plants at Plot No.: D II/9, GIDC Dahej,
Taluka: Vagra, District: Bharuch, Gujarat. Synthetic Organic Chemical Plants shall include chemicals like
Chlorotoluenes, Chlorinated Paraffin Wax, Epichlorohydrin (ECH) plant & Chloromethanes (CLM) plant.
Plot area of the project consists of 76 Hectare. The project cost is estimated to be INR 3,153 Crore. Approximate
22-24 Months will be required for the project completion from the date of getting EC. Details of all the proposed
products are listed in Table 1-1, Pg. 1.
Table 1-1: List of Proposed Products
S. No. Products Quantity (MTPD)
A Chlor-Alkali Plant (800 TPD)
1 Caustic Soda (100%) Lye/ Prills / Flakes 800
2 Chlorine Gas 710
3 Hydrochloric acid 186
4 Hydrogen Gas 20
5 Sodium Hypochlorite 34
6 Dilute Sulphuric acid (78-80%) 16
B Chlorotoluenes Plant (205 TPD)
1 Benzyl chloride 100
2 Benzaldeyde 50
3 Benzyl Alcohol 55
Other Derivatives and Bi-products are listed below
4 Benzoyl chloride 5
5 Cinnamic aldehyde 5
6 Benzyl acetate 15
M/S. GACL IN JV
WITH NALCO DRAFT EIA FOR PROPOSED NEW CHLOR-ALKALI PLANT, CPP & SYNTHETIC ORGANIC
CHEMICAL UNITS AT PLOT NO.: D II/9, GIDC, DAHEJ SUMMARY AND
CONCLUSION
KADAM ENVIRONMENTAL CONSULTANTS | SEPTEMBER 2017 2
S. No. Products Quantity (MTPD)
7 Benzal chloride (Intermediate Product) 85
8 Sodium benzoate 4
9 Di benzyl ether 15
10 Hydrochloric acid 170
C Chlorinated Paraffin Wax Plant (100 TPD)
1 Chlorinated Paraffin Wax 100
2 Hydrochloric Acid (33%) 180
3 Sodium hypochlorite 43
D Epichlorohydrin (ECH) Plant (84 TPD)
1 Epichlorohydrin (ECH) 84
E Chloromethanes (CLM) Plant (300 TPD)
1 Chloromethanes (CLM) 300
F Hydrochloric Acid (31%) 74
1 Coal Based Captive Power Plant (130 MW) 130 MW
1.1.2 Process
Caustic Chlorine Plant
Membrane cell based chlor alkali process will involve processing of brine electrolysis to produce caustic soda,
chlorine, and hydrogen. During manufacturing of process of caustic soda, Hydrogen and Chlorine gas as co
products are generated. HCl, hypochlorite, dilute H2SO4 are by products. The technology will be provided from M/s.
ThyssenKrupp Industrial Solutions, Germany.
Chlorotoluenes
Chlorination of toluene in presence of ultra violet lights will produce chlorinated mass of BCL, OPCT, BCL2 and BTC.
Hydrolysis of mixture of BCL2 fraction containing BCL2 and BTC separated from chlorinated mass with 10 % dilute
solution of ferrous chloride in agitated hydrolyser at an elevated temperature and atmospheric pressure will
produce hydrolyzed mass of BCHO and BCOOH mixture and HCl vapours as a by-product. Neutralization of BCOOH
with soda ash solution will produce NaB solution. Hydrolysis of BCL with fresh process water will produce
hydrolyzed mass of BOH and vapours of hydrogen chloride as a by-product. Separate heavy phase organic layer
from gravity separator fed to water and BCL fraction removal column. At elevated temperature and an under
vacuum recovered distillate BCL fraction recycle back to hydrolyser to produce BCO. Residue generated in the
process of burned in Incinerator. Technology will be supplied from M/s. LeLe Associate and Consultants, Mumbai.
Chlorinated Paraffin Wax
Normal/ Heavy Normal Paraffin (HNP), being straight- chain saturated hydrocarbons (alkanes) react with Chlorine
readily, replacing Hydrogen atoms to produce Chlorinated Paraffin & Hydrochloric Acid.
Epichlorohydrin Plant
Chlorination of Glycerine in presence of HCl gas will produce Epichlorohydrin. Technology will be provided from M/s.
KVIT, Austria.
Chloromethanes
Thermal and Hydro Chlorination of Methane gas and Methanol will produce Chloromethanes. Technology will be
provided from M/s. Shin – Etsu, Japan.
M/S. GACL IN JV
WITH NALCO DRAFT EIA FOR PROPOSED NEW CHLOR-ALKALI PLANT, CPP & SYNTHETIC ORGANIC
CHEMICAL UNITS AT PLOT NO.: D II/9, GIDC, DAHEJ SUMMARY AND
CONCLUSION
KADAM ENVIRONMENTAL CONSULTANTS | SEPTEMBER 2017 3
Coal based Captive Power Plant
To carter the power requirement of the various plants, coal based captive power plant will be installed in which the
steam is produced in high pressure in the steam boiler due to burning of fuel (Imported Coal from Indonesia /
South Africa blended with Indigenous washed coal) in boiler furnaces. Super-heated steam enters into the turbine
and rotates the turbine blades. The turbine is mechanically coupled with alternator that its rotor will rotate with
rotation of turbine blades hence shall generate power.
1.1.3 Utilities
Power: Power requirement of 130 MW will be met from proposed CPP having backup source of DGVCL. Three DG
Sets of 1,000 kVA for Caustic Soda plant & 1 No. DG set of 225 kVA for Chlorinated paraffin wax plant will be
provided & used in case of main power failure.
Fuel: 1,760 MT/Day Imported Indonesian/ South African Coal having 0.55 % sulphur and 15.0 % ash content will
be used for the proposed CFBC Boilers and 800 Ltr/Hr. HSD/LDO will be used for DG Sets. In principle approval for
procurement of coal is obtained from Adani.
Water: 15.34 MLD of water requirement will be met from GIDC Reservoir. Assurance Letter from GIDC for Water
Supply upto 20.82 MLD to GACL is availed.
Manpower: During the construction phase around 500 workers will be hired. During operation phase, project will
generate direct employment for more than 750 people along with indirect employment for approx. 500 locals. They
may be hired locally. First preference shall be given to skilled, semi-skilled work force of local community, i.e. for
people of Bharuch District.
1.1.4 Air Emissions & Control
Point Source Emissions, i.e. PM, SO2 & NOx from boiler stacks shall be controlled by multistage ESP with one
filed extra. Process gas emissions of NOx, CO, HCl, C2H4Cl2, Cl2, SO2, TOC, Dioxin from various process vent and
incinerator shall be controlled by providing caustic/alkali scrubber, DM water scrubber & water scrubbers;
Area source as SPM emissions from coal stock piles is envisaged. It shall be controlled by providing
curtains/water sprinkling as and when required;
Line Source Emissions (CO, HC, PM, NOx) from 325 trucks, 5 staff buses, 50 cars, 100 two wheelers & 100
cycles is anticipated;
Fugitive emissions from storage & handling area for raw materials, solvents, finished products is envisaged due
to proposed project. Odor of raw materials & finished goods shall be limited to plant area.
1.1.5 Noise Generation Sources
Noise generation sources are the heavy machinery like crane, dumper, roller, bulldozers, boiler, compressors,
chillers, DG sets, etc. & during vehicular movement for transportation of raw material and finished goods.
1.1.6 Waste Water Generation & Disposal
Wastewater will be generated from the proposed unit from various areas such as Process, Cooling Tower, Boiler,
Domestic use, Washings, Safety Showers & from other Utility Blow downs etc. The generated effluent will be
treated in ETP 1 & ETP 2. Treated effluent from ETP 2 will be fully reused in the process. Treated effluent from ETP
1 after meeting the GPCB Norms will be discharged into GIDC effluent collection system for final disposal in the sea.
Sewage generated will be treated in STP and treated water will be reused in gardening.
No effluent from Chlor – Alkali & Power Plant will be discharged into GIDC effluent collection system. It will be fully
utilized within the plant premises. Separate waste water stream and storm water line will be provided.
M/S. GACL IN JV
WITH NALCO DRAFT EIA FOR PROPOSED NEW CHLOR-ALKALI PLANT, CPP & SYNTHETIC ORGANIC
CHEMICAL UNITS AT PLOT NO.: D II/9, GIDC, DAHEJ SUMMARY AND
CONCLUSION
KADAM ENVIRONMENTAL CONSULTANTS | SEPTEMBER 2017 4
1.1.7 Hazardous & Other Solid Waste
The following solid / hazardous wastes will be generated during operations:
Hazardous Waste: High M.P Liquid Impurities, Used/spent oil, Discarded drums and containers, Oil
Contaminated cotton rags or other cleaning materials, ETP waste, Incineration Ash, Waste residue from
industrial use of paint, Lead washers etc. as Lead scrap, Nickel Scrap, Copper tubing, caps and cables etc. – As
Copper scrap, Spent Carbon and Discarded bags / liner / packing material, Discarded PPEs, gaskets;
Non Hazardous Waste: Brine Sludge & Fly Ash;
Domestic Solid Waste: Paper and Food waste;
Small amounts of Municipal Solid Waste, Biomedical Wastes, e-waste and Construction and Demolition Wastes.
These will be managed as per the applicable Rules, mainly, Hazardous Waste (Management, Handling, Storage and
Transboundary) Rules 2016, as amended till date.
1.2 DESCRIPTION OF THE ENVIRONMENT
1.2.1 Study Period, Study Area, Monitoring & Sampling Locations
Baseline environmental study was carried out for Post Monsoon Season from 20th October, 2016 to 31st December,
2016 within 10 Km radius of the project site.
Air monitoring was carried out at 10 locations. Noise measurement was carried out at 8 locations. Surface water
samples from 8 locations (6 samples from ponds & 2 sample from estuary), ground water samples from 8 locations
(6 Borewells, 1 open well & 1 hand pump) and soil samples from 8 locations (1 from project site & 7 samples from
villages) were collected and analysed.
1.2.2 Land Use and Land Cover Distribution
Land use of study area is classified as Agricultural land (~ 32.2%), Vegetation cover (~ 28.1%), Water bodies (~
19.6%), Waste land (~ 15.2%), Buildup Land & Habitation (~ 4.0%) & others (~ 0.2%).
1.2.3 Meteorology
Based on the long-term climatological tables (1981 – 2010) by Indian Meteorological Department (IMD), for Surat
(Station ID: 42840), during post monsoon, mean daily maximum and minimum temperatures ranges from 16.5 oC –
35.1oC, in morning & evening relative humidity ranges 65 – 73 % and 43 – 52% respectively, average wind speed
was 0.72 m/sec., predominant wind direction was from NE to SW direction (16.5%).
Site specific meteorological data was collected at roof top of SEZ office, which is ~ 8.30 Km in W direction from
project site. Minimum and maximum temperature were recorded as 15.0°C & 36.0°C respectively. Mean hourly
relative humidity was 31%. Average wind speed & Predominant wind direction were 2.7 m/sec & from NE to SW
(26.8 %) respectively. Calm wind contributed to about 3.14%.
1.2.4 Ambient Air Quality
It is noted from Table 1-2 that PM10 results exceeds the permissible limits of 100 µg/m3 at Jolwa village due to:
Vehicular movement on the “kaccha” roads of the villages;
Industrial & infrastructure development activities in study area (PCPIR & residential projects);
Rural activities like burning of cow dung for household purposes like using it in “chullas”.
1.2.5 Traffic Survey
Traffic Survey was carried out on SH – 6 in S direction of the proposed site, road connecting site to Dahej &
Bharuch on 12th April, 2017. The road width of this road is 15 meters, which is a 3 Lane (One Way) Arterial Road.
M/S. GACL IN JV
WITH NALCO DRAFT EIA FOR PROPOSED NEW CHLOR-ALKALI PLANT, CPP & SYNTHETIC ORGANIC
CHEMICAL UNITS AT PLOT NO.: D II/9, GIDC, DAHEJ SUMMARY AND
CONCLUSION
KADAM ENVIRONMENTAL CONSULTANTS | SEPTEMBER 2017 5
Average peak hourly (i.e. morning 0800 hours to 1200 hours and evening 1600 hours to 2000 hours) traffic on this
route i.e. from Dahej to Bharuch and from Bharuch to Dahej is 1,634 and 1,522 PCU respectively.
M/S. GACL IN JV WITH NALCO DRAFT EIA FOR PROPOSED NEW CHLOR-ALKALI PLANT, CPP & SYNTHETIC ORGANIC CHEMICAL UNITS AT PLOT NO.: D II/9, GIDC,
DAHEJ SUMMARY AND CONCLUSION
KADAM ENVIRONMENTAL CONSULTANTS | SEPTEMBER 2017 6
Table 1-2: Ambient Air Quality Data
Station
code
All stations are in
Industrial, Residential,
Rural & Other Areas
(CPCB)
Name of Pollutant, Time for sample collection & Average Pollutant Concentration
Note: All units are in µg/m3. Figures in brackets indicate CPCB limits. Minimum Reportable Readings are 8 µg/m3 for SO2, 10
µg/m3 for NOX & NH3 , 1.0 µg/m3 for Cl2, HCl & 800 µg/m3 for HC and 1,142 µg/m3 for CO.
PM10 PM2.5 SO2 NOx NH3 HCl Cl2 HC CO
24 Hr. 24 Hr. 24 Hr. 24 Hr. 24 Hr. 24 Hr. 24 Hr. Grab Grab
[100] [60] [80] [80] [400] NS NS NS [2,000]
AA1 At Project Site
Maximum 84 32 9.8 20.3 <10.0 <1.0 <1.0 1,588 <1,142
Minimum 55 20 <8.0 <10.0 <10.0 <1.0 <1.0 1,184 <1,142
Average 72 26 <8.0 13.6 <10.0 <1.0 <1.0 1,308 <1,142
98%tile 84 32 9.3 19.7 <10.0 <1.0 <1.0 1,568 <1,142
AA2 Atali
Maximum 97 36 10.3 21.2 <10.0 <1.0 <1.0 ` <1,142
Minimum 55 17 <8.0 10 <10.0 <1.0 <1.0 1,183 <1,142
Average 75 27 <8.0 15.7 <10.0 <1.0 <1.0 1,316 <1,142
98%tile 94 35 10.3 21 <10.0 <1.0 <1.0 1,512 <1,142
AA3 Galenda
Maximum 82 31 9.5 16.6 <10.0 <1.0 <1.0 1,252 <1,142
Minimum 52 16 <8.0 <10.0 <10.0 <1.0 <1.0 988 <1,142
Average 68 24 <8.0 13 <10.0 <1.0 <1.0 1,144 <1,142
98%tile 80 31 9.2 16.4 <10.0 <1.0 <1.0 1,245 <1,142
AA4 Jolwa
Maximum 133 61 13.2 25.7 <10.0 <1.0 <1.0 1,561 <1,142
Minimum 78 28 5.9 11.8 <10.0 <1.0 <1.0 1,252 <1,142
Average 94 40 9.8 19.4 <10.0 <1.0 <1.0 1,370 <1,142
98%tile 129 59 13.1 25.4 <10.0 <1.0 <1.0 1,545 <1,142
AA5 Rahiyad
M/S. GACL IN JV WITH NALCO DRAFT EIA FOR PROPOSED NEW CHLOR-ALKALI PLANT, CPP & SYNTHETIC ORGANIC CHEMICAL UNITS AT PLOT NO.: D II/9, GIDC,
DAHEJ SUMMARY AND CONCLUSION
KADAM ENVIRONMENTAL CONSULTANTS | SEPTEMBER 2017 7
Station
code
All stations are in
Industrial, Residential,
Rural & Other Areas
(CPCB)
Name of Pollutant, Time for sample collection & Average Pollutant Concentration
Note: All units are in µg/m3. Figures in brackets indicate CPCB limits. Minimum Reportable Readings are 8 µg/m3 for SO2, 10
µg/m3 for NOX & NH3 , 1.0 µg/m3 for Cl2, HCl & 800 µg/m3 for HC and 1,142 µg/m3 for CO.
PM10 PM2.5 SO2 NOx NH3 HCl Cl2 HC CO
24 Hr. 24 Hr. 24 Hr. 24 Hr. 24 Hr. 24 Hr. 24 Hr. Grab Grab
[100] [60] [80] [80] [400] NS NS NS [2,000]
Maximum 95 56 14.1 26.5 <10.0 <1.0 <1.0 1,292 <1,142
Minimum 56 18 <8.0 12.9 <10.0 <1.0 <1.0 1,087 <1,142
Average 76 32 9.5 18.9 <10.0 <1.0 <1.0 1,152 <1,142
98%tile 93 51 13.7 26.1 <10.0 <1.0 <1.0 1,274 <1,142
AA6 Koliyad
Maximum 73 31 10.7 17.9 <10.0 <1.0 <1.0 1,215 <1,142
Minimum 45 14 <8.0 <10.0 <10.0 <1.0 <1.0 988 <1,142
Average 58 21 <8.0 13.6 <10.0 <1.0 <1.0 1,058 <1,142
98%tile 71 30 10.5 17.4 <10.0 <1.0 <1.0 1,203 <1,142
AA7 Kaladara
Maximum 78 31 9.9 17.6 <10.0 <1.0 <1.0 1,135 <1,142
Minimum 53 18 <8.0 10.9 <10.0 <1.0 <1.0 995 <1,142
Average 66 23 <8.0 13.7 <10.0 <1.0 <1.0 1,055 <1,142
98%tile 78 30 9.8 17.4 <10.0 <1.0 <1.0 1,130 <1,142
AA8 Suva
Maximum 88 43 12.8 26.9 <10.0 <1.0 <1.0 1,210 <1,142
Minimum 58 20 <8.0 11 <10.0 <1.0 <1.0 1,050 <1,142
Average 73 29 8 15.7 <10.0 <1.0 <1.0 1,114 <1,142
98%tile 86 42 12.3 25.4 <10.0 <1.0 <1.0 1,202 <1,142
AA9 Akhod
Maximum 67 25 7.8 15.9 <10.0 <1.0 <1.0 1,063 <1,142
Minimum 47 15 <8.0 <10.0 <10.0 <1.0 <1.0 982 <1,142
M/S. GACL IN JV WITH NALCO DRAFT EIA FOR PROPOSED NEW CHLOR-ALKALI PLANT, CPP & SYNTHETIC ORGANIC CHEMICAL UNITS AT PLOT NO.: D II/9, GIDC,
DAHEJ SUMMARY AND CONCLUSION
KADAM ENVIRONMENTAL CONSULTANTS | SEPTEMBER 2017 8
Station
code
All stations are in
Industrial, Residential,
Rural & Other Areas
(CPCB)
Name of Pollutant, Time for sample collection & Average Pollutant Concentration
Note: All units are in µg/m3. Figures in brackets indicate CPCB limits. Minimum Reportable Readings are 8 µg/m3 for SO2, 10
µg/m3 for NOX & NH3 , 1.0 µg/m3 for Cl2, HCl & 800 µg/m3 for HC and 1,142 µg/m3 for CO.
PM10 PM2.5 SO2 NOx NH3 HCl Cl2 HC CO
24 Hr. 24 Hr. 24 Hr. 24 Hr. 24 Hr. 24 Hr. 24 Hr. Grab Grab
[100] [60] [80] [80] [400] NS NS NS [2,000]
Average 60 20 <8.0 12.8 <10.0 <1.0 <1.0 1,007 <1,142
98%tile 67 25 7.6 15.8 <10.0 <1.0 <1.0 1,061 <1,142
AA10 Nr. Kaladara
Maximum 78 26 8.6 15.9 <10.0 <1.0 <1.0 1,147 <1,142
Minimum 51 16 <8.0 <10.0 <10.0 <1.0 <1.0 988 <1,142
Average 61 20 <8.0 11.7 <10.0 <1.0 <1.0 1,043 <1,142
98%tile 75 26 7.9 15.8 <10.0 <1.0 <1.0 1,139 <1,142
M/S. GACL IN JV
WITH NALCO DRAFT EIA FOR PROPOSED NEW CHLOR-ALKALI PLANT, CPP & SYNTHETIC ORGANIC
CHEMICAL UNITS AT PLOT NO.: D II/9, GIDC, DAHEJ SUMMARY AND
CONCLUSION
KADAM ENVIRONMENTAL CONSULTANTS | SEPTEMBER 2017 9
1.2.6 Noise Levels
Based on the noise monitoring results as mentioned in Table 1-3 , it is observed that noise level during day &
night time, in Residential area, were slightly higher which is due to vehicular movements in nearby highways.
Table 1-3: Noise Level Monitoring Results
Location
Code Location Date Category
CPCB Limits in
dB (A)
Average Noise levels
in dB (A)
Day
Time
Night
Time
Day
Time
Night
Time
NL1 At Project boundary(NE) 22.11.16 Industrial 75.0 70.0 58.9 54.5
NL2 At Project Boundary (NW) 23.11.16 Industrial 75.0 70.0 61.2 57.2
NL3 At project Site 25.11.16 Industrial 75.0 70.0 57.5 52.3
NL4 At Project boundary (SW) 24.11.16 Industrial 75.0 70.0 56.8 51.8
NL5 Atali Village 25.11.16 Residential 55.0 45.0 55.1 45.5
NL6 Nr Jolwa Village 21.11.16 Residential 55.0 45.0 55.5 45.9
NL7 Rahiyad Village 26.11.16 Residential 55.0 45.0 55.7 45.1
NL8 Koliyad Village 28.11.16 Residential 55.0 45.0 55.2 44.8
1.2.7 Water Quality
Quality of Surface water (Pond)
It is observed from Table 1-4:
Atali Pond (SW 4) is worst polluted source where total 8 parameters are more than acceptable limits, whereas
Koliyad Pond (SW 3) pond is the least polluted sources.
Parameters such as TDS, Chloride, Sulphates, alkalinity, fluoride, total nitrogen and coliforms are above
acceptable limits in major pond sources, thus requiring necessary treatment if utilized for drinking purposes.
As per classification of inland surface water standards, analysis results for all surface water of all ponds could
be considered under Class “C” except for BOD values which range from 7 mg/l to 22 mg/l. This is due to
anthropogenic sources such as washing, bathing etc.
Quality of Surface water (Estuary)
It is observed from Table 1-5:
The Quality of Narmada estuary (upstream and downstream) is nearly matching with class SW-I as per causal
water marine standards.
Quality of Ground Water
It is observed from Table 1-6:
The presence of high TDS and Chlorides is imparted by saline geological formation.
The geological formation is having low storability since it is made up of fine sand and silt thus groundwater
supply will always be limited.
1.2.8 Soil Quality
It is observed from Table 1-7 that at different locations:
The porosity ranged from 55% (Koliyad village) to 61% (Jolwa village) and WHC varied from 67% (Rahiyad
village) to 77 % (Jolwa & Atali village);
M/S. GACL IN JV
WITH NALCO DRAFT EIA FOR PROPOSED NEW CHLOR-ALKALI PLANT, CPP & SYNTHETIC ORGANIC
CHEMICAL UNITS AT PLOT NO.: D II/9, GIDC, DAHEJ SUMMARY AND
CONCLUSION
KADAM ENVIRONMENTAL CONSULTANTS | SEPTEMBER 2017 10
The soil permeability was low to medium which ranged from 0.37 mm/hr (Jolwa village) to 12.5 mm/hr
(Kolliyad village), however soil texture in all the soil samples was clay loam, hence whatever variation observed
was mainly due to variation in organic matter content of soils;
The EC of soil ranged from 178 dS/m (Koliyad village) to 506 dS/m (Suva village), while ESP varied from 0.19
(Koliyad village) to 1.78 (Suva village);
These soils are neither saline nor sodic as ESP is < 5.0;
The pH of soil ranged from 7.86 (Koliyad village) to 8.26 (Jolwa village), which indicates that soils are neutral
to slightly alkaline.
The overall soil quality indicates that soils are normal as the area is located in GIDC and not under cultivation since
long and whatever salts were there are washed off or leached down due to rain water over the years.
M/S. GACL IN JV WITH NALCO DRAFT EIA FOR PROPOSED NEW CHLOR-ALKALI PLANT, CPP & SYNTHETIC ORGANIC CHEMICAL UNITS AT PLOT NO.: D II/9, GIDC,
DAHEJ SUMMARY AND CONCLUSION
KADAM ENVIRONMENTAL CONSULTANTS | SEPTEMBER 2017 11
Table 1-4: Surface Water (Ponds) Analysis Results
S.
No. Parameters Units
IS 10500 Standard Limits for drinking
water Samples
Requirement
(Acceptable
Limit)
Permissible limit in
the absence of
alternate source
SW1
(Jolwa)
SW2
(Suva)
SW3
(Koliyad)
SW4
(Atali)
SW5
(Galenda)
SW6
(Akhod)
Source Pond Pond Pond Pond Pond Pond
Date of sampling 22.11.16 22.11.16 22.11.16 22.11.16 22.11.16 22.11.16
1 pH pH scale 6.5-8.5 No Relaxation 8.4 7.95 7.99 8.17 7.70 7.83
2 Temperature o C NS NS 29 29 29 29 27 23
3 Turbidity NTU 1 5 3.6 2.5 2 2.1 7.4 2.3
4 TDS mg/lit 500 2,000 1,875 1,342 560 2,900 672 840
5 Electrical conductivity µmhos/cm NS NS 3,200 2,400 1,177 1,510 960 1,268
6 COD mg/lit NS NS 56 60 32 69 24 57
7 BOD mg/lit NS NS 17 18 10 22 7.0 17
8 Phenol mg/lit 0.001 0.002 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001
9 Chlorides mg/lit 250 1,000 839 574 256 593 226 327
10 Sulphates mg/lit 200 400 303 209 48 375 111 153
11 Total Hardness mg/lit 200 600 120 200 90 120 500 370
12 Ca++ Hardness mg/lit NS NS 32 132 80 90 240 320
13 Mg++ Hardness mg/lit NS NS 88 68 10 30 260 50
14 Total Alkalinity mg/lit 200 600 320 230 240 280 180 200
15 Nitrate mg/lit 45 NR 30.18 31.62 30.43 8.50 35.76 46.29
16 Fluoride mg/lit 1 1.5 0.53 0.05 0.80 1.17 0.84 0.93
17 Sodium mg/lit NS NS 386.6 238.4 113.6 228.5 101.9 101.2
18 Potassium mg/lit NS NS 31.1 29.8 34.2 40.3 32.9 18.5
19 Calcium mg/lit 75 200 12.8 52.9 32.1 36.1 96.1 128.2
20 Magnesium mg/lit 30 100 21.4 16.5 2.4 7.3 63.1 12.1
21 Salinity mg/lit NS NS 1,512 1,034 460 1,069 226 573
22 Total Nitrogen mg/lit 0.5 NR 6.16 9.00 7.30 3.40 9.24 11.2
M/S. GACL IN JV WITH NALCO DRAFT EIA FOR PROPOSED NEW CHLOR-ALKALI PLANT, CPP & SYNTHETIC ORGANIC CHEMICAL UNITS AT PLOT NO.: D II/9, GIDC,
DAHEJ SUMMARY AND CONCLUSION
KADAM ENVIRONMENTAL CONSULTANTS | SEPTEMBER 2017 12
S.
No. Parameters Units
IS 10500 Standard Limits for drinking
water Samples
Requirement
(Acceptable
Limit)
Permissible limit in
the absence of
alternate source
SW1
(Jolwa)
SW2
(Suva)
SW3
(Koliyad)
SW4
(Atali)
SW5
(Galenda)
SW6
(Akhod)
Source Pond Pond Pond Pond Pond Pond
Date of sampling 22.11.16 22.11.16 22.11.16 22.11.16 22.11.16 22.11.16
23 Total Phosphorous mg/lit NS NS <1 <1 <1 <1 <1 <1
24 Dissolved Oxygen mg/lit NS NS 4 4.2 4.1 4.3 4.3 3.9
25 Ammonical Nitrogen mg/lit NS NS <0.01 1.84 0.94 1.63 0.17 0.15
26 SAR - NS NS 15.30 7.30 5.20 9.00 1.97 2.28
27 Heavy Metals
a Arsenic (as As) mg/l 0.01 0.05 <0.01 <0.01 <0.01 <0.01 <0.001 <0.001
b Cadmium (as Cd) mg/l 0.003 NR <0.003 <0.003 <0.003 <0.003 <0.003 <0.003
c Chromium (as Cr) mg/l 0.05 NR <0.02 <0.02 <0.02 <0.02 <0.02 <0.02
d Copper (as Cu) mg/l 0.05 1.5 <0.03 <0.03 <0.03 <0.03 <0.03 <0.03
e Cyanide (as CN) mg/l 0.05 NR <0.003 <0.003 <0.003 <0.003 <0.003 <0.003
f Iron (as Fe) mg/l 0.3 NR <0.05 <0.05 <0.05 <0.05 2.179 4.467
g Lead (as Pb) mg/l 0.01 NR <0.01 <0.01 <0.01 <0.01 <0.01 <0.01
h Mercury (as Hg) mg/l 0.001 NR <0.001 <0.001 <0.001 <0.001 <0.001 <0.001
i Manganese (as Mn) mg/l 0.1 0.3 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02
j Nickel (as Ni) mg/l 0.02 NR <0.02 <0.02 <0.02 <0.02 <0.004 <0.004
k Zinc (as Zn) mg/l 5 15 0.03 0.057 <0.03 <0.03 0.040 0.020
28 Total Coliform MPN/100 ml Shall not be detectable
Shall not be detectable
4,300 3,500 2,200 5,400 2,100 5,200
29 Faecal Coliform MPN/100 ml Shall not be detectable
Shall not be detectable
1,400 1,300 940 1,700 1,600 1,350
* - Drinking Water Stander IS-10500, 2012
Note: NS – Not Specified; NR – No Relaxation
M/S. GACL IN JV WITH NALCO DRAFT EIA FOR PROPOSED NEW CHLOR-ALKALI PLANT, CPP & SYNTHETIC ORGANIC CHEMICAL UNITS AT PLOT NO.: D II/9, GIDC,
DAHEJ SUMMARY AND CONCLUSION
KADAM ENVIRONMENTAL CONSULTANTS | SEPTEMBER 2017 13
Table 1-5: Analysis Result of Estuary Water Sample
S.
No. Parameters Unit
Water Quality Standards for Coastal Waters Marine Outfalls
Nr. Koliyad Nr. Suva
SW7 SW8
Narmada
Estuary (U/s)
Narmada
Estuary (D/s)
SW-I SW-II SW-III SW-IV SW-V 22.11.16 22.11.16
1 pH - 6.5 to 8.5 6.5 to 8.5 6.5 to 8.5 6.0 to 9.0 6.0 to 9.0 7.31 7.34
2 Total Dissolved Oxygen mg/l 5.0 4.0 3.0 3.0 3.0 4.5 4.0
3 Colour and Odour - No Colour No Odour
No Colour No Odour
No Colour No Odour
No Colour No Odour
No Colour No Odour
No Colour No Odour
No Colour No Odour
4 Floating Matters mg/l None None None 10 NS None None
5 Suspended Solids mg/l
None from Sewage or
Industrial waste Origin
NS NS NS NS 40 61
6 Turbidity NTU NS 30 30 NS NS 1.1 1.3
7 BOD mg/l NS 3 NS 5 NS 5 7
8 Oil and Grease
(including Petroleum Products)
mg/l 0.1 NS NS NS NS <0.4 <0.4
9 Mercury (as Hg) mg/l 0.001 NS NS NS NS <0.001 <0.001
10 Lead (as Pb) mg/l 0.001 NS NS NS NS <0.01 <0.01
11 Cadmium (as Cd) mg/l 0.01 NS NS NS NS <0.001 <0.001
12 Dissolved Iron (as Fe) mg/l NS NS 0.5 NS NS <0.05 <0.05
13 Dissolved Manganese ( as
Mn) mg/l NS NS 0.5 NS NS <0.04 <0.04
14 Faecal Coliform ml (MPN) NS 100/100 500/100 500/100 500/100 <1.8 <1.8
15 Sludge Deposits, Solid refuse
floating Solids, Oil Grease and Scum
NS NS NS NS NS None except for treated Sewage and Industrial
waste Effluent None None
Note: NS – Not Specified
M/S. GACL IN JV WITH NALCO DRAFT EIA FOR PROPOSED NEW CHLOR-ALKALI PLANT, CPP & SYNTHETIC ORGANIC CHEMICAL UNITS AT PLOT NO.: D II/9, GIDC,
DAHEJ SUMMARY AND CONCLUSION
KADAM ENVIRONMENTAL CONSULTANTS | SEPTEMBER 2017 14
Table 1-6: Analysis Results of Groundwater Samples
S.
No. Parameters Unit
IS 10500:2012 Standard
Limits for drinking water (2nd
Revision) Acceptable limit
Sampling Code & Location
GW1 GW2 GW3 GW4 GW 5 GW 6 GW 7 GW 8
Bore well Bore well Bore well Hand
Pump
Bore
well
Bore
well
Bore
well
Bore
well
Rahiyad Suva Jolwa Atali Koliyad Vegni Akhod Galenda
1 pH pH scale 6.5-8.5 7.8 8.01 7.78 8.28 8.12 8.11 8.13 7.93
2 Temperature o C NS 29 29 29 29 29 21.7 23.3 21.8
3 Turbidity NTU 1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1
4 TDS mg/lit 500 1,142 3,929 6,852 1,693 570 4,552 488 1,456
5 Electrical conductivity µmhos/cm NS 2,300 6,900 11,000 3,100 1,200 6,502 697 2,080
6 COD mg/lit NS <4 <4 <4 <4 <4 <4 <4 <4
7 BOD mg/lit NS <1 <1 <1 <1 <1 <1 <1 <1
8 Phenol mg/lit 0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001
9 Chlorides mg/lit 250 434 1,822 3,053 781 246 1,336 171 438
10 Sulphates mg/lit 200 241 549 1,175 191 57 478 105 105
11 Total Hardness mg/lit 200 240 200 360 190 140 3,800 250 1,120
12 Ca++ Hardness mg/lit NS 126 80 160 76 78 1,040 66 408
13 Mg++ Hardness mg/lit NS 114 120 200 114 62 2,760 184 712
14 Total Alkalinity mg/lit 200 200 240 200 300 260 260 260 220
15 Nitrate mg/lit 45 14.2 58.23 8.67 15.22 22.78 80.92 <0.08 81.3
16 Fluoride mg/lit 1 0.03 1.42 0.83 1.29 0.05 0.18 1.55 0.09
17 Sodium mg/lit NS 214 922 1,264 312.3 76.4 16.9 39.7 23.8
18 Potassium mg/lit NS 25.9 88.3 101.3 41.6 36.5 6.9 12.9 18
19 Calcium mg/lit 75 51 32 64 30 31 41 26 25
20 Magnesium mg/lit 30 28 29 49 28 15 67 44 17
21 Salinity mg/lit NS 782 3,284 5,502 1,407 443 4,208 307 789
22 Total Nitrogen mg/lit 0.5 3.36 12.88 1.87 3.29 5.09 19.6 <0.001 19.04
M/S. GACL IN JV WITH NALCO DRAFT EIA FOR PROPOSED NEW CHLOR-ALKALI PLANT, CPP & SYNTHETIC ORGANIC CHEMICAL UNITS AT PLOT NO.: D II/9, GIDC,
DAHEJ SUMMARY AND CONCLUSION
KADAM ENVIRONMENTAL CONSULTANTS | SEPTEMBER 2017 15
S.
No. Parameters Unit
IS 10500:2012 Standard
Limits for drinking water (2nd
Revision) Acceptable limit
Sampling Code & Location
GW1 GW2 GW3 GW4 GW 5 GW 6 GW 7 GW 8
Bore well Bore well Bore well Hand
Pump
Bore
well
Bore
well
Bore
well
Bore
well
Rahiyad Suva Jolwa Atali Koliyad Vegni Akhod Galenda
23 Total Phosphorous mg/lit NS <1 <1 <1 <1 <1 0.06 0.06 0.06
24 Dissolved Oxygen mg/lit NS 3.3 3.4 3.5 3.2 3.3 3.3 2.9 3.1
25 Ammonical Nitrogen mg/lit NS <0.01 <0.01 <0.01 <0.01 <0.01 0.8 <0.01 0.17
26 SAR - NS 6 28.2 28.85 9.81 2.8 0.12 3.6 0.31
27 Heavy Metals
a Arsenic (as As) mg/l 0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.001 <0.001 <0.001
b Cadmium (as Cd) mg/l 0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003
c Chromium (as Cr) mg/l 0.05 <0.02 <0.02 <0.02 <0.02 <0.02 <0.002 <0.002 <0.002
d Copper (as Cu) mg/l 0.05 <0.03 <0.03 <0.03 <0.03 <0.03 <0.03 <0.03 0.03
e Cyanide (as CN) mg/l 0.05 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003
f Iron (as Fe) mg/l 0.3 <0.05 <0.05 <0.05 <0.05 <0.05 0.307 <0.01 0.901
g Lead (as Pb) mg/l 0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.04 <0.04 <0.04
h Mercury (as Hg) mg/l 0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001
i Manganese (as Mn) mg/l 0.1 <0.02 <0.02 <0.02 <0.02 <0.02 <0.01 <0.01 <0.01
j Nickel (as Ni) mg/l 0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.004 <0.004 <0.004
k Zinc (as Zn) mg/l 5 0.03 <0.03 0.041 0.034 <0.03 0.11 0.06 0.02
28 Total Coliform MPN/100ml Shall not be detectable in any 100
ml sample Absent Absent Absent Absent Absent <1.8 <1.8 <1.8
29 Faecal Coliforms MPN/100ml Shall not be detectable in any 100
ml sample Absent Absent Absent Absent Absent <1.8 <1.8 <1.8
Note: NS – Not Specified
M/S. GACL IN JV WITH NALCO DRAFT EIA FOR PROPOSED NEW CHLOR-ALKALI PLANT, CPP & SYNTHETIC ORGANIC CHEMICAL UNITS AT PLOT NO.: D II/9, GIDC,
DAHEJ SUMMARY AND CONCLUSION
KADAM ENVIRONMENTAL CONSULTANTS | SEPTEMBER 2017 16
Table 1-7: Soil Analysis Results
S. No Parameter Unit
Sampling Location
ST1 ST2 ST3 ST4 ST5 ST6 ST7 ST8
At Site Rahiyad Suva Jolwa Atali Koliyad Vegni Akhod
1 Porosity % 59 56 58 61 57 55 58 57
2 Water Holding Capacity % 70 67 75 77 77 72 65 71
3 Permeability mm/hr 5.88 7.58 6.43 0.37 6.8 12.5 6.62 7.24
4 Particle Size Distribution -
a Sand % 23 10 10 12 10 26 24 17.12
b Silt % 36 63 53 32 56 49 20 52
c Clay % 42 26 36 45 34 26 38 30
5 Texture - Clay Loam Silty Clay Loam Silty Clay Loam Clay Silty Clay Loam Loam clay loam silty clay loam
6 Cation Exchange Capacity meq/100gm 40 38.5 35 34.5 33 30.5 32.5 31
7 Electrical Conductivity dS/m 442 333 506 334 258 178 223 448
8 Sodium Absorption Ratio 1.67 1.11 1.78 1.53 1 0.98 0.74 0.73
9 Exchangeable Sodium % 1.18 0.38 1.34 0.98 0.21 0.19 1.28 0.87
10 pH 8.08 8.21 8.12 8.26 8.15 7.86 8.39 8.12
11 Calcium gm/kg 0.32 0.21 0.16 0.48 0.24 0.22 0.35 0.33
12 Magnesium gm/kg 0.24 0.21 0.29 0.05 0.24 0.16 1.24 0.27
13 Sodium gm/kg 0.73 0.43 0.73 0.59 0.41 0.35 0.59 0.36
14 Potassium gm/kg 0.17 0.18 0.29 0.3 0.16 0.09 0.19 0.15
M/S. GACL IN JV
WITH NALCO DRAFT EIA FOR PROPOSED NEW CHLOR-ALKALI PLANT, CPP & SYNTHETIC
ORGANIC CHEMICAL UNITS AT PLOT NO.: D II/9, GIDC, DAHEJ EXECUTIVE SUMMARY
KADAM ENVIRONMENTAL CONSULTANTS | SEPTEMBER 2017 17
1.2.9 Ecology & Biodiversity
There is no Wildlife Sanctuary, National Park, Reserve Forest or Sanctuary, Biosphere Reserve, Tiger / Elephant
Reserve, Migratory Corridors, breeding sites, nesting sites / grounds, foraging and resting grounds in the
project study area of 10 km radius.
Project Site / Core Zone
The core zone area is dominated by Prosopis juliflora. There is no tree species at site. Overall 11 species of
common flora were recorded from the core zone. Only 3 common species of birds were reported from the
project site. While, No direct or indirect evidences of mammals were reported from the core zone.
Study Area / Buffer Zone
Overall 104 species of flora were recorded from the buffer zone of the study area. On the behalf of the
qualitative analysis, the maximum species were trees (40) followed by herbs (27), shrubs (26), and grasses (5)
and climbers (6).
Overall 54 species of fauna were reported from the buffer zone of the proposed project. Canis aureus (Jackal)
was observed and rescued from the industrial drain of GIDC, Dahej, Phase II with the help of Forest department
during site visit. On the behalf of the qualitative analysis, the maximum species were Birds (39) followed by
Mammals (9) and herpetofauna (6).
Marine Biodiversity
Marine biodiversity study shows that, buffer zone supports phytoplankton, zooplanktons, benthos, fishes and
other marine fauna. Bombay duck (Harpadon nehereus) constitutes the dominant fishery (13%) of the region
of the total marine catch. The coastal water also serves as the migratory route for the clupeid Hilsa (Tenualosa
ilisha) on their way to the Narmada River for breeding and the outward route for the newly hatched juveniles
and some of the adults. This makes Hilsa fishery an important activity inside the Gulf and the estuarine region
of Narmada.
Status of Threatened Biodiversity
No any threatened species of plants were reported from the area under study while most of the fauna reported,
from the buffer as well as core zone falls under Schedule-IV of IWPA, 1972 except Indian Peafowl (Schedule-I,
Lc). Among recorded faunal species, none of the species can be designated as an endemic.
Agriculture Pattern
The crops grown in this region was mostly Tuver (Cajanus indica), Wheat (Triticum aestivum) and Cotton
(Gossypium herbaceum) during rainy seasons. Other crops like Bajra (Pennisetum typhoides), Jowar (Sorghum
bicolar) and Divel (Ricinus communis) are grown in some area. The vegetables grown in the study area are,
Rigan (Solanum melongena), Tomato (Lycopersicon lycopersicum) and Val, Valpapadi (Lablab purpureus).
Horticulture activity is very less. The cultivation is essentially through rain water and in some area through
GIDC water supply.
1.2.10 Socio Economic
The summary of the social survey for the study area is provided as below:
M/S. GACL IN JV
WITH NALCO DRAFT EIA FOR PROPOSED NEW CHLOR-ALKALI PLANT, CPP & SYNTHETIC
ORGANIC CHEMICAL UNITS AT PLOT NO.: D II/9, GIDC, DAHEJ EXECUTIVE SUMMARY
KADAM ENVIRONMENTAL CONSULTANTS | SEPTEMBER 2017 18
Population and its distribution: There are 27 villages, with a total population of 27,059 persons and 5,766
households out of which within 3 Km there is a population of 5,573 persons in 5 villages;
Sex Ratio: 924 females per 1,000 males;
Literacy Level: male literacy is 79.3 % and female literacy is 64.3 % of total population;
Educational Facilities: There is presence of Anganwadi & Primary schools in all villages in study area. For
attaining the higher education like High School, ITI, Diploma or Engineering, facilities are available from
Bharuch;
Drinking water: The water connectivity is provided by the GIDC. At few habitation of the study area the
existing companies provide drinking water through tanker or giving tap connection water from their
companies;
Power supply is available in the villages.
Major issues in the communities are inadequate supply of drinking water, sanitation, unemployment for land
losers & poor infrastructure.
1.3 ANTICIPATED ENVIRONMENTAL IMPACTS AND MITIGATION MEASURES
1.3.1 Air Environment
Dispersion modelling (using “AERMOD” modelling software) was carried out for point and line sources. This
indicates:
Maximum 24 hourly average GLC’s for PM10 (20.7 µg/m3), SO2 (5.38 µg/m3), NOx (5.40 µg/m3), HCl (0.40
µg/m3), Cl2 (0.05 µg/m3) are within 250 m to 750 m from the proposed site;
Maximum 8 hourly average GLC’s for HC (0.025 µg/m3) & CO (2.14 µg/m3) are within 250 m to 500 m
from the proposed site;
Average incremental GLC’s at all villages will continue to be well within specified norms of CPCB for
ambient air quality.
Mitigation Measures for Air Quality Impacts:
Lime dosing will be done in the CFBC Boilers to meet the SO2 emission standards;
Adequate height of at least 80 m will be provided as per the statutory requirements to flue gas stacks
attached to boilers. APC like ESPs will be installed to meet PM emission standards;
Well-designed APCM like scrubbers (DM water & Caustic) will be provided as per the applicability to control
emissions HCl, Cl2, NOx, CO, C2H4Cl2, TOC, from process vents/stacks;
Dioxin emission will be prevented by maintaining proper combustion temperature;
Online sensors for PM, SO2 & NOx shall be provided with flue gas stack attached to boilers;
Online sensors for HCl & Cl2 shall be provided with stack attached to Hypo plant;
Plant load will be maintained to reduce the air emissions;
Effective water spraying will be done on the access roads to control re-entrained dust during dry season (if
required);
Proper operating procedures will be followed during start-up and shutdown;
Proper PPE like dust masks will be provided to workers and its use ensured;
Regular Work place monitoring will be done.
M/S. GACL IN JV
WITH NALCO DRAFT EIA FOR PROPOSED NEW CHLOR-ALKALI PLANT, CPP & SYNTHETIC
ORGANIC CHEMICAL UNITS AT PLOT NO.: D II/9, GIDC, DAHEJ EXECUTIVE SUMMARY
KADAM ENVIRONMENTAL CONSULTANTS | SEPTEMBER 2017 19
1.3.2 Incremental Traffic
From the proposed facility, approximately on daily basis, during peak hour, additional 132 PCU’s & 49 PCU’s
will be merging into the existing traffic of SH-6. The incremental traffic will lead to maximum PCU of 1,917
(Dahej to Bharuch) & 1,805 (Bharuch to Dahej). As per IRC, carrying capacity of this approach road is 3,600
PCU. Thus, the road is capable of carrying the excess traffic from the proposed project.
To ensure smooth traffic movement in the plant, proper in and out movement will be ensured. PUC certified
vehicles, covered with tarpaulins, will be used.
1.3.3 Noise Environment
Sound Pressure Levels (SPL) were predicted from the proposed project activities using “SoundPlan” Modelling
software. SPL predicted at receivers varies from 27.8 (dB) to 45.9 (dB). Logarithmic incremental of these levels
in baseline monitored data shows variation from 55.1 (dB) to 61.3 (dB) during day time and 44.9 (dB) to 57.3
(dB) during night time. Beyond 250 m from the project boundary, increase in noise level is negligible.
Passive and active controls such as noise barriers or acoustic enclosure will be provided in DG sets. Use of
suitable PPE (ear muffs or ear plugs) will be ensured. Thick green belt will be developed in the periphery of the
facility.
1.3.4 Water Environment
No withdrawal of groundwater is proposed in the project. Hence, surface and ground water will not be
impacted.
Following mitigation measures will be implemented to minimize the impact on the water environment:
During construction phase, sewage will be disposed into soak pit and septic tank. Regular cleaning will be
carried out.
There will be separate process and storm water drains.
Properly designed effluent drains with side barriers will be provided & inflow will be diverted to individual
ETP for necessary treatment to achieve Marine discharge norms.
Maximum recycle and reuse will be done to reduce the fresh water consumption.
Leakage of water at various source will be avoided.
Process, chemical fuel storage and handling area will have proper bunds and dyke walls so that
contaminated run-off cannot meet the storm-water line.
Rainwater harvesting will be done only in the admin building and from roof top of control rooms.
Domestic waste water will be treated in STP and treated water will be used for gardening purpose.
Use of drip irrigation system for greenbelt development which will reduce the overall water demand
Proper O&M of effluent treatment plants will be done to ensure meeting specified standards
During the heavy rainfall, water through internal storm water drains will meet nearest storm water drain made
by GIDC, leading to Estuary which is approximately 2.8 Km in S direction from the project site.
1.3.5 Land Environment
Based on mutually agreed terms and conditions, land was acquired from various land owners by GIDC. Plot
was allotted to GACL in year 2009 by GIDC. Change in the land use, currently from barren (scrub land) to
industrial use is envisaged.
Following mitigation measures will be implemented to minimize the impact on the land environment:
M/S. GACL IN JV
WITH NALCO DRAFT EIA FOR PROPOSED NEW CHLOR-ALKALI PLANT, CPP & SYNTHETIC
ORGANIC CHEMICAL UNITS AT PLOT NO.: D II/9, GIDC, DAHEJ EXECUTIVE SUMMARY
KADAM ENVIRONMENTAL CONSULTANTS | SEPTEMBER 2017 20
Storage areas for hazardous waste, fuel & raw material will be stored on impervious/RCC floor to prevent
leachate penetration;
Generated hazardous wastes during project operation will be transported to an authorized TSDF operator
and incineration;
Secured Landfill Facility will be provided to store Brine sludge within plant premises.
1.3.6 Ecological & Biological Environment
Removal of common site specific floral species from barren land of project site will not have significant or
permanent impact on the habitat structure of associated faunal diversity.
As the emissions from the plant are regulated and minimal with respect to the specified norms, and with a very
healthy greenbelt will be developed at the site in the form of several species, it then follows that the biological
environment will be protected.
Every year survival rate of the plantation within project site as well as other plantation carried out in the LIZ
area will be monitored. Conservation plan will be prepared to enhance the population status of this Schedule
species as well as overall improvement of biodiversity which will be implemented in consultation of local forest
department.
Greenbelt Development
Within the project site, greenbelt will be developed in 2,51,000 m2 (33% of total plot area). Considering 16 m2
(4x4) for one tree, project area will have plantation of 15,700 plants of suggested species. Plantation will be
carried out around periphery, near / around built-up areas and along internal roads of the project area.
Additional plantation for green belt development will be carried out in the various places (around nearby 5
water bodies, in school and temple premises) of LIZ to improve habitat status of the project area.
Greenbelt Maintenance
Plantations will be managed by regular watering, soil enrichment work, applying manure, weeding and provide
proper protection. Replacement of sapling (replanting) will be done whenever mortality occurs in the plantation
during the growth stage. After care for a period of minimum five years will be done till the saplings attain
matured tree stage will be done. Any damage to the developed greenbelt due to any natural or unforeseen
activities will be attended by redeveloping and maintained it.
1.3.7 Socio-Economic Environment
While assessing the socio-economic and sociological impact including health impacts to surrounding population,
the upcoming project will bring job opportunities for the local people.
1.4 Environmental Monitoring Program
Expenditure to be incurred by GACL on environmental monitoring and management shall include capital cost of
~ INR 50.85 Crore and ~ INR 2.14 Crore recurring cost (annually). Once, Environmental Clearance is obtained
and plant is in operation phase, various environmental parameters as tabulated in Table 1-8 will be
monitored.
Table 1-8: Post EC - Environmental Monitoring Plan
M/S. GACL IN JV
WITH NALCO DRAFT EIA FOR PROPOSED NEW CHLOR-ALKALI PLANT, CPP & SYNTHETIC
ORGANIC CHEMICAL UNITS AT PLOT NO.: D II/9, GIDC, DAHEJ EXECUTIVE SUMMARY
KADAM ENVIRONMENTAL CONSULTANTS | SEPTEMBER 2017 21
S.
No. Environmental Component / Parameter
Frequency of
monitoring Location
1 CEMS Sensors (HCl & Cl2). Online On stack attached with hypo scrubber.
2 HCl & Cl2 in stacks Monthly HCl unit stack vent, Hypo Stack Vent,
Chlorotoluenes, Chloromethanes & ECH Plant’s Stack Vent.
3 PM, SO2, NOx in stack. Online Boiler Stack.
Monthly Boiler Stack & DG Set Stacks
4 PM10, PM2.5, SO2, NOx, HCl & Cl2 in ambient
air.
Twice in a month at site & once in a
season at Villages
1) 3 Locations in site
2) Rahiyad Village
3) Atali Village
5 WPM for HCl & Cl2. As per Factories
Rules At 5 locations within site and at Rahiyad &
Atali Village
6 Noise levels Monthly Main Plants and Utilities Area
7 Water consumed in various activities and
waste water generated from various areas of plants
Daily Main intake, plant wise water supply line
& effluent diversion line to ETPs.
8 Monitoring of wastewater inlet and outlet at ETP plants for the principal parameters (such
as pH, SS, TDS, COD). Daily Stream wise inlet & outlet of ETPs
9 Monitoring of domestic wastewater inlet and
outlet at STP for the principal parameters (such as pH, SS, BOD).
Daily Inlet & Outlet of STP
10 Monitoring of wastewater at Final Factory drain outlet for the parameters that will be
provided by GPCB. Daily Factory outlet drain
11 Surface water samples at nearby area.
Parameters are essential parameters as per IS: 10500:2012.
Once in a Season 1) Rahiyad Village Pond
2) Atali Village Pond
12 Quantity of Fly Ash Generated Daily Ash Silo
13 Quantity of Brine Sludge Generated Daily Captive Secured Landfill Site
14 Soil analysis for EC, pH, permeability and ESP
Pre & post monsoon / in the
event of accidental spillage
At Site
1.5 ADDITIONAL STUDIES
1.5.1 Risk & Hazards
During operation of the proposed caustic chlorine, synthetic organic units & power plant, following activities
can pose hazards and risk to human and surrounding environment:
Storage of Chlorine, Methanol, Toluene & Epichlorohydrin;
Pipeline transfer of Chlorine & Methane gas;
Loading and unloading hazardous waste - mechanical movements;
Contact with hazardous chemicals;
Storage of Incinerable Waste.
On the basis of chemical properties like flash point, phase of chemical, operating conditions and total inventory
etc of the above mentioned chemicals, the study have been conducted to carry out consequence analysis.
M/S. GACL IN JV
WITH NALCO DRAFT EIA FOR PROPOSED NEW CHLOR-ALKALI PLANT, CPP & SYNTHETIC
ORGANIC CHEMICAL UNITS AT PLOT NO.: D II/9, GIDC, DAHEJ EXECUTIVE SUMMARY
KADAM ENVIRONMENTAL CONSULTANTS | SEPTEMBER 2017 22
Major failures selected for the analysis are 10 mm & 25mm leak as maximum credible scenario and
catastrophic rupture as worst case.
The results of analysis are as follows:
In case of Methanol, Toluene, & Epichlorohydrin storage tanks, the effect of pool (dyke) fire at radiation level
37.5 kW/m2 is not going out of the plant boundary.
For Chlorine tanks & pipeline, the toxic dispersion at 10 ppm slightly coming out of the plant boundary
Mitigation Measures
Medical checkup would be carried out at an regular intervals
During site preparation proper care would be taken by GACL, appropriate PPEs will be provided to site
workers and staff members
Appropriate personnel protective clothing to be used to prevent skin contact.
Safety Goggles will be used to prevent eye contact.
Hand gloves of natural rubber, neoprene, and polyvinyl chloride will be used as and when required
Acoustic enclosures will be provided to DG sets and other noise generating equipment
GACL will develop and implement a spill management plan to prevent risk of spill which may cause health
problem.
GACL will develop emergency management system (off-site & onsite emergency plan) to tackle any
emergency situation for proposed facilities.
1.5.2 Socio Economic Development Activities
Based on the need of the community, GACL will do socio-economic development activities towards community
welfare in the field of Health & Hygiene, Safe Drinking Water facilities, Educational Activities, Sanitation &
Drainage System, Skill Development/Training Program Infrastructure Facilities in the study area.
The proposed budget for Enterprise Social Commitment (ESC) will be allocated for the ten years / life span of
project. The project proponent has earmarked ~ INR 4.95 Crore per year with 10% increase in the amount
each year towards community development program in the study area. Thus, a budget of ~ INR 78.8 Crore
(2.5% of total project cost) is earmarked to be spent on ESC/CSR Activities based on the yearly need based
assessment. The monitoring and evaluation of CSR activities shall be conducted by a reputed institution /
organization every year in compliance with the Clause 135 of Companies Act 2013.
The new project shall provide employment to nearly 500 people during construction phase and more than 750
during operation phase. The urban and rural settlements would enjoy the provision of better service roads,
education, health facilities, drinking water and sanitation system. The surrounding areas will be developed
through the CSR/Community Development Programme every year. The beneficiaries of these activities will be
the population of all the villages falling in the study area of the proposed project. The efforts will be put to
provide sufficient quantity of potable water, construction/renovation of toilets and supporting programmes
related to education and skill development.
1.6 PROJECT BENEFITS
Due to establishment of the proposed project following benefits are envisaged for the locals and country:
Project will encourage industrial growth due to the availability of finished products;
The company will have market growth of its own brands name in various overseas countries;
M/S. GACL IN JV
WITH NALCO DRAFT EIA FOR PROPOSED NEW CHLOR-ALKALI PLANT, CPP & SYNTHETIC
ORGANIC CHEMICAL UNITS AT PLOT NO.: D II/9, GIDC, DAHEJ EXECUTIVE SUMMARY
KADAM ENVIRONMENTAL CONSULTANTS | SEPTEMBER 2017 23
The company will carter needs of the domestic market and will reduce import of caustic soda;
Employment potential for semi-skilled and unskilled workers will be generated during the construction
phase and for skilled and semi-skilled during the operational phase;
Other tangible benefits include development of various ancillary activities which shall generate indirect
employment to the locals;
Many of proposed products have got very good export potential which can lead to forex revenues for the
country.
1.7 ENVIRONMENT MANAGEMENT PLAN
Environmental Monitoring Plan for suggested mitigation measures and monitoring plan will include:
Provision of SOPs and Emergency Response Procedures to each plant will be ensured;
Deploying experienced EHS head who will directly provide the status report to director on daily basis;
Proper inventory accounting & monthly review of non-compliances by plant head;
Monitoring for compliance of statutory conditions by EHS head;
Internal audit of hazardous waste storage area as per ISO system;
Timely submission of Form 5, Environment Audit Report, Hazardous waste manifest, Compliance of show
cause / closure notice issued by regulatory authorities, etc.
Sufficient funds towards capital cost and recurring cost per annum will be provided. The funds so
earmarked for environment management/ pollution control measures shall not be diverted for any other
purpose.
An Environmental Management Cell with adequate professional expertise and resources shall be established to
discharge responsibilities related to environmental management including statutory compliance, pollution
prevention, environmental monitoring, etc.
1.8 CONCLUSION
Based on the EIA study conducted in Post Monsoon Season from 20th October, 2016 to 31st December, 2016,
as per terms of reference given by SEAC dated 14th September, 2016 and TOR Amendment dated 29th April,
2017, the following highlight emerges:
Project has various locational benefits like availability of common salt, coal from nearby region;
Site is well connected with ports, highway and railway;
There is no applicability of General Conditions, as per EIA Notification, to the project;
The proposed project, when established, shall fetch foreign exchange for the country as there is huge
demand of chlorine based products in the international market;
Strict adherence to all the applicable regulatory requirements will be complied with;
Safety and environmental norms will be followed;
Recycle & Reuse scheme will be implemented to reduce water consumption;
Provision of air pollution control equipment, management of hazardous waste, will lead to minimum
adverse environmental impacts;
The project shall generate employment potential for skilled, semiskilled, unskilled people during
construction & operation phase.
In view of this, the project may be considered for grant of Environmental Clearance.