Executive Summary

EI EIA Report for Development Drilling of 108 wells , laying of, 4” and 8” dia. Oil and gas flow lines & establishment of 03 nos. of EPS, 01 No. of WHI, 03 Nos. of Water injection Facilities and 03 nos. of ETP’s in operational areas of ONGC Cambay Asset.

EXECUTIVE SUMMARY

1. ITRODUCTIO

Project Highlights

Oil & Natural Gas Corporation Limited (ONGC), a premier Govt. of India Undertaking and the major National Oil Company, is a vertically integrated company producing crude oil, natural gas and value added products like LPG, NGL, Petrol, HSD etc. Operations of ONGC extend over both onshore as well as offshore within India and outside India.

ONGC has proposed Drilling of 108 development wells, laying of, 4” and 8” dia. Oil and gas flow lines & establishment of 03 nos. of EPS, 01 No. of WHI , 03 Nos. of Water injection Facilities and 03 nos. of ETPs in operational areas of Cambay Asset,. The total Block Area is 820.82Sq km 2. The Total Project Cost is INR of Rs. 890 Crores/.

Objective and Scope of EIA study

The Objective of EIA study is to meet the regulatory environmental clearance criteria as well as to ascertain a sustainable development through the assessment of likely impacts due to project related activities on the surrounding environment. The study envisages likely assessment of negative impacts and alleviation of these negative impacts, to such extent that it avoids/mitigates any harm/ permanent changes in the naturally existing environment.

The scope of the EIA study includes detailed characterization of the existing status of the terrestrial and socioeconomic environment within the study area, identification of the potential environmental impacts of the project, and formulation of an effective Environmental Management Plan (EMP) to prevent, control & mitigate the adverse environmental impacts, and ensuring the environmental compliance. Apart from suggesting mitigation measures to the negative impacts, the report suggests implementation of various positive and enhancement measures as a part of project benefit program to people of the nearby areas. This report is based on the TOR approved by Ministry of Environment and Forests, Government of India vide letter J11011/187/2014IA II (I) dated 26 th September, 2014.

2. PROJECT DESCRIPTIO

ONGC intends to drill about 108 Developmental Wells in Nine fields namely, Akholjuni, Anklav, Chaklasi, Kathana, Mahi High, Padra, Siswa and NELP block CBONN2001/1(Nadiad) and CB ONN2004/2(Vadatal). The salient features of the project have been summarized in the following table:

Name of the Project : Development Drilling in 9 ML/NELP Onshore blocks Location : Cambay Asset, area in Vadodara, Anand & Kheda District.

Total Area of the Project : 9ML/NELP block covers an area of 820.82sq.km, onshore in 3 districts. Total Number of Proposed Wells : 108 wells in 9ML/NELP Blocks Akholjuni 4 Anklav 15 Chaklasi 3 Kathana 3 Mahi High 1 Padra 18 Siswa - 9 Nadiad 7 Vadtal 48 Total Estimated Drilling Period for : 90100 days each Well Proposed Drilling Fluid for each well : Waterbased Mud System

Water Requirement for each well : 25 KLD HSD Required per day per well : 6 KLD

Well Depth : 700 1800 m

Type of Hydrocarbon Expected : Oil and Gas

Estimated Cost of the Project : Rs. 890 Crores

3. DESCRIPTIO OF THE EVIROMET

The study area comprises of the total 9 ML Blocks/ oil fields in this asset distributed in three district of Gujarat state namely Anand district, Kheda district and Vadodara district having, total area is 820.82Sq Kms. The existing/ baseline environmental setup of the Study Area has been studied during the months of October 2014 to December 2014 as described in following subheadings.

Geology & Topography

The Cambay Basin is a major NW –SE trending rift graven extending from Gulf of Cambay in south to Barmer Basin of Rajasthan in North. The evolution of the Basin is broadly divided into two stages i.e. Late Jurassic to Early Cretaceous pre-rift stage and Late Cretaceous-tertiary syn-rift-post rift stage. The sedimentary fill ranges from Mesozoic to recent alluvium with a volcanic sequence equivalent of Deccan Traps in between. Based on structural styles, tectonics and structural morphology of Tertiary sedimentary fills, Cambay Basin has been subdivided into five tectonic blocks.

The basin came into existence during rifting along N-S to NNW-SSE trend in Late Jurassic to Early Cretaceous. The two dominant NW-SSE and ENE-WSW directions correlate well with the intra- basinal horsts and grabens. Drilling of 108 No. of development wells in the producing oil fields of Cambay Asset by ONGC in coming up years 2014-2015 onwards. Details of proposed wells to be drilled in following ML/NELP Blocks is as below.

Table 1. Site Details of Proposed Drilling Locations (Tentative)

S. Fields/Blocks Well Lat Long Near by Village No. No.

1 Akholjuni 1 22°20'4.11"N 72°30'8.94"E Navagam Bara

2 2 22°22'2.09"N 72°30'9.84"E Navagam Bara

3 3 22°20'55.93"N 72°30'54.72"E Navagam Bara

4 4 22°20'51.89"N 72°32'1.86"E Navagam Bara

5 Kathana 1 22°18'27.85"N 72°48'54.22"E Diwel

6 2 22°18'14.79"N 72°49'3.62"E Diwel

7 3 22°18'6.09"N 72°48'52.24"E Diwel

8 Siswa 1 22°22'2.46"N 72°52'42.04"E Vadeli

9 2 22°21'55.06"N 72°52'56.67"E Vadeli

10 3 22°21'47.30"N 72°52'28.28"E Vadeli

11 4 22°21'23.52"N 72°52'25.16"E Vadeli

12 5 22°21'12.75"N 72°52'23.15"E Vadeli

13 6 22°20'57.17"N 72°52'30.68"E Vadeli

14 7 22°20'47.20"N 72°53'29.96"E Bhadrniya

15 8 22°18'18.32"N 72°54'10.07"E Vadeli

16 9 22°20'35.53"N 72°53'55.78"E Bhadrniya

17 Anklav 1 22°19'18.55"N 72°55'0.83"E Valvod

18 2 22°19'9.41"N 72°54'59.48"E Valvod

19 3 22°20'25.84"N 72°54'31.35"E Valvod

20 4 22°18'58.31"N 72°55'0.62"E Valvod

21 5 22°18'56.35"N 72°55'7.96"E Valvod

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22 6 22°18'51.59"N 72°55'4.63"E Valvod

23 7 22°18'46.26"N 72°55'5.25"E Valvod

24 8 22°18'46.75"N 72°54'58.78"E Valvod

25 9 22°18'42.45"N 72°54'57.05"E Valvod

26 10 22°20'0.97"N 72°54'49.91"E Valvod

27 11 22°19'44.12"N 72°54'57.86"E Valvod

28 12 22°19'59.48"N 72°54'45.83"E Valvod

29 13 22°20'26.82"N 72°55'30.16"E Valvod

30 14 22°20'18.75"N 72°55'26.96"E Valvod

31 15 22°20'26.25"N 72°55'19.09"E Valvod

32 Chaklasi 1 22°43'27.53"N 72°52'45.42"E Nadiad

33 2 22°41'34.43"N 72°56'41.97"E Kanjoda

34 3 22°39'59.65"N 72°55'56.00"E Chakasi

35 Mahi High 1 22°18'0.93"N 72°36'28.46"E Khambhat

36 Padra 1 22°17'52.78"N 73° 5'24.40"E Ampad

37 2 22°17'33.83"N 73° 5'19.33"E Ampad

38 3 22°17'54.16"N 73° 6'8.52"E Ampad

39 4 22°17'50.19"N 73° 6'17.93"E Ampad

40 5 22°16'46.12"N 73° 5'51.73"E Rajpura

41 6 22°16'44.68"N 73° 6'4.89"E Rajpura

42 7 22°16'44.25"N 73° 5'45.20"E Rajpura

43 8 22°15'57.56"N 73° 4'58.56"E Ganpatpura

44 9 22°15'50.31"N 73° 5'8.64"E Ganpatpura

45 10 22°15'16.00"N 73° 4'8.39"E Tajpura

46 11 22°15'12.15"N 73° 4'6.87"E Tajpura

47 12 22°14'55.84"N 73° 4 ʹ11.09 ʺE Tajpura

48 13 22°12'44.56"N 73° 0'39.37"E Ranu

49 14 22°12'44.69"N 73° 0'27.31"E Ranu

50 15 22°13'18.25"N 73° 8'50.21"E Chapad

51 16 22°13'9.01"N 73° 8'49.05"E Chapad

52 17 22°14'11.24"N 73° 3'49.47"E Padra

53 18 22°14'3.14"N 73° 3'50.32"E Padra

54 Nadiad 1 22°39'39.52"N 72°54'44.87"E Uttarsanda

55 2 22°39'30.59"N 72°54'40.41"E Uttarsanda

56 3 22°39'39.90"N 72°54'31.14"E Uttarsanda

57 4 22°42'2.23"N 72°52'11.14"E Nadiad

58 5 22°41'41.08"N 72°52'48.69"E Nadiad

59 6 22°42'23.25"N 72°51'58.53"E Nadiad

60 7 22°42'19.37"N 72°52'38.99"E Nadiad

61 Vadatal 1 22°36'49.15"N 72°53'58.47"E Rajnagar

62 2 22°35'32.89"N 72°54'31.69"E Becharpur

63 3 22°35'18.15"N 72°54'38.20"E Becharpur

64 4 22°34'58.74"N 72°54'38.53"E Becharpur

65 5 22°34'37.23"N 72°54'42.82"E Bakrol part

66 6 22°35'56.71"N 72°54'15.72"E Bakrol part

67 7 22°35'10.22"N 72°54'7.69"E Bakrol part

68 8 22°34'29.63"N 72°54'24.41"E Bakrol part

69 9 22°40'9.98"N 72°51'54.97"E Piplag

70 10 22°39'43.32"N 72°52'2.50"E Piplag

71 11 22°39'24.72"N 72°51'48.93"E Piplag

72 12 22°39'10.20"N 72°52'3.42"E Gutal

73 13 22°38'47.60"N 72°51'54.13"E Gutal

74 14 22°38'28.21"N 72°51'58.78"E Gutal

75 15 22°37'58.11"N 72°51'45.65"E Keriavi

76 16 22°37'16.72"N 72°51'29.30"E Akhdol

77 17 22°39'11.81"N 72°52'4.60"E Gutal

78 18 22°39'39.90"N 72°52'3.65"E Piplag

79 19 22°39'45.67"N 72°51'38.71"E Piplag

80 20 22°39'3.53"N 72°51'34.45"E Piplag

81 21 22°38'25.77"N 72°51'36.39"E Keriavi

82 22 22°37'38.64"N 72°51'35.64"E Keriavi

83 23 22°37'4.37"N 72°51'37.11"E Bamroli

84 24 22°33'47.18"N 72°49'13.09"E Mahelav

85 25 22°33'15.98"N 72°49'35.49"E Bandhani

86 26 22°33'12.63"N 72°49'59.76"E Bandhani

87 27 22°32'51.03"N 72°50'9.28"E Bandhani

88 28 22°32'25.42"N 72°50'20.82"E Porda

89 29 22°32'3.85"N 72°50'26.26"E Porda

90 30 22°33'17.31"N 72°49'12.86"E Mahelav

91 31 22°32'43.41"N 72°49'32.22"E Mahelav

92 32 22°32'16.01"N 72°49'56.37"E Porda

93 33 22°38'13.16"N 72°52'45.24"E Gutal

94 34 22°38'9.54"N 72°52'56.78"E Gutal

95 35 22°37'31.79"N 72°52'42.36"E Narshanda

96 36 22°37'56.99"N 72°53'7.74"E Gutal

97 37 22°37'52.82"N 72°51'7.59"E Keriavi

98 38 22°36'26.86"N 72°53'53.15"E Rajnagar

99 39 22°36'27.16"N 72°53'39.53"E Rajnagar

100 40 22°36'54.15"N 72°54'20.19"E Kanjari

101 41 22°34'49.73"N 72°53'50.36"E Bakrol Part

102 42 22°34'27.35"N 72°49'25.01"E Mahelav

103 43 22°34'27.16"N 72°49'35.69"E Mahelav

104 44 22°34'43.98"N 72°48'49.41"E Mahelav

105 45 22°34'41.12"N 72°48'40.37"E Mahelav

106 46 22°34'29.72"N 72°50'40.99"E Ralvi

107 47 22°34'32.89"N 72°50'27.17"E Ralvi

108 48 22°34'55.89"N 72°49'52.63"E Padgol

Seismic Consideration

According to seismiczoning map of India [IS 1893: 2002], the study region falls in Zone II of the seismic zones of India.

Climate and Meteorology

There are four Seasons in the project area, namely, Summer ( March to middle of June ), South West Monsoon ( Middle of June to September), Post-monsoon season (October and November) and Winter (December to February ). The project area has semiarid climate with mean annual rainfall of 900.9 mm. The maximum temperature during the summer months of March, April and May ranges between 25.3 oC to 40.6 oC. The average mean minimum temperature (December to February) varies from 11.2 oC to 28.6 oC.

Land Use

The Land Use Land Cover (LULC) within the block have been studied and it can be broadly classified into nine major categories, namely, Fallow Land, Barren, Mangrove, Water, Wetland, Built Up, Marshy, Crop/Agricultural Land and Plantation.

Air Quality

Air quality was monitored at nine different locations within the study area. The 24hourly average of 3 3 3 3 PM 10 and PM 2.5 levels varied station wise between 39µg/m 85µg/m and 18µg/m 29µg/m 3 3 respectively. The 24hourly average values of SO 2 varied between 7 µg/m and 26 µg/m . The 24 3 3 hourly average NO 2 level measured in the study area ranged between 1 µg/m and 26 µg/m . The

analytical result of value reveals that the concentrations of PM 10 , PM 2.5 , SO 2 and NO x were found within the prescribed standard limits at all the monitoring locations.

Water Quality

Twelve water samples were collected from ground water source and eleven samples are collected from surface water bodies in the Study Area. The major use of both surface and ground water is for agricultural domestic and domestic purposes.

The major use of the water w.r.t detailed information was discussed in the Chapter3 of the present environmental condition. The physicochemical characteristics of groundwater w.r.t the 09 fields

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indicate pH in the range of 7.18.4; temperature during study period is in the range of 30 O39 OC. The inorganic parameters viz., Alkalinity was in the range of 2501260 mg/l; Total Hardness 110 980 mg/l; Chlorides 8821000 mg/l; Sulphates 2.77122.75 mg/l);

The physicochemical characteristics of surfacewater indicate pH in the range of 7.28.9; temperature 29.036.0 OC. The inorganic parameters viz., Alkalinity was in the range of 180740 mg/l; Total Hardness 70560 mg/l; Chlorides 711207 mg/l; Sulphates 3.2831.41 mg/l; Microbiological parameter Ecoli and Total coliforms was also present in almost all surface water samples in all blocks.

Soil Quality:

Soil samples were collected from eight different locations within the study area. The sampling and analysis of soil were carried out as per standards of IS: 2720.

It was observed from the analyzed data that the soil of the study area is clay loam in nature. Soil pH varied in the range 7.90-8.66 , it denotes that the soil is slightly alkaline. The textural analysis of soil revealed the loamy clay nature of the soil, with the percentage of sand ranging from 2 – 60%, whereas the clay and silt quantity ranged from 15 – 34% and 37%, respectively. The Organic Matter in the sampled soil is in the range of 3.24-6.46 % by weight of the soil which denotes medium to high fertility.

oise Quality Ambient noise intensity at 18 locations within the study area has been collected. Noise monitoring was carried out on a 24hour basis to assess the baseline noiselevels and to evaluate the impact. The values of noise level, which were recorded, was in the range of 4048 dB (A) at day time and 40 – 46 dB (A) at night time.

Biological Characteristics The area supports diverse flora rich in rare and endemic elements. It is a rained area during monsoonal seasons (South West monsoon) the water bodies get water and goes dry during summer months. The vegetation of the area ranges from small herbs to very large trees including many aquatic plants. No ecologically sensitive areas such as National Park/Sanctuary/Biosphere Reserve/Elephant Reserve/ Tiger Reserve/ Historical or Archaeological Monument/ World Heritage Centre, etc… are present within the study area. The area has also no grazing and forest land in the close vicinity. The proposed project does not involve clearance under Forest (Conservation) Act, 1980. Acacia nilotica , Azadirachta indica, Ailenthus excels, Eucalyptus sp, Mangifera indica were the most commonly sighted trees in the block area .

SocioEconomic Environment The 09 fields are located in Anand, Kheda and Vadodara districts. The key demographic details of the four districts are given below.

SL. DETAILS DISTRICT

NO. VADODARA ANAND KHEDA

1 AREA(KM 2) 7546 3204 3953

2 RURAL POPULATION 2099855 1457758 1776276

3 RURAL POPULATION MALE 1077943 758499 915197

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4 RURAL POPULATION FEMALE 2021912 699259 861079

5 URBAN POPULATION 2065771 634987 523609

6 MALE POPULATION 2153736 1087224 1185727

7 FEMALE POPULATION 2011890 1005521 1114158

8 TOTAL POPULATIAON 4165626 2092745 2299885

9 POPULATIAON DENSITY (/KM 2) 552 653 582

10 SEX RATIO(PER 1000) 934 925 923

11 LITERATES 2893080 1551253 1660243

12 LITERACY RATE 78.92 84.37 82.65

13 MALE LITERACY RATE 85.39 91.82 91.31

14 FEMALE LITERACY RATE 72.03 76.36 73.49

15 LITERACY RATE RURAL MALE 77.14 91.27 91.08

16 LITERACY RATE RURAL 58.07 73.43 71.22 FEMALE

Source: Census of India, 2011

4. ATICIPATED EVIROMET IMPACTS AD MITIGATIO MEASURES

The proposed project of Developmental Drilling includes the following activities during construction and operation phase:

• Site preparation (clearance of land, earthing, digging, etc) • Drilling Operations (deployment of rigs, etc) • Atmospheric emissions (gas flaring, vehicular/vessels emissions, etc) • Operational discharges • Noise levels • Solid/Wastewater/Hazardous waste generation • Use of resources such as water requirement for construction activities & other operations (drilling, etc) and fuel for D.G sets for power generation • Transport of personnel and materials • Fuel storage and handling

Based upon the aspect impact interaction and baseline information, the following impacts are anticipated for which suitable mitigation measures have been proposed.

Air Environment

The site preparation activities (such as clearance of land etc.), operation of generators and other machineries & equipment, gas flaring activities, transportation of materials & personnel, and fugitive emissions have the impact on air quality during construction as well as operation phase. However, the impacts during the construction phase shall be temporary, restricted to the construction site and adoption of suitable measures (such as routine maintenance of the vehicles/vessels/machineries etc.); whereas impacts during the operation phase shall be minimized by adopting good maintenance practices and suitable measures such as adequate stack height, special flare tip design for effective combustion, installation of WHRU to reduce the temperature of gas turbine generators, etc.

oise Quality

The main sources of noise generation during the construction and operation phase are:

• Site preparation activities (earth work, digging, etc) • Operation of machineries and equipments (such as generators, compressors, fluid pumps, mud pumps, etc) • Movement of vehicles/vessels

These activities may affect the surrounding social and ecological environment. However, impacts due to these activities have been envisaged to be local and temporary in construction phase and also, adopting suitable measures such as routine maintenance of vehicles/vessels/machineries, use of noise attenuation devices, shall minimize the impacts in construction as well as in operation phase.

Water Quality

The water quality is likely to get affected due to installation of pipeline, operational & domestic discharges, hydraulic testing of pipeline and accidental spillage of lubricants, oil & other chemicals from the operation of rigs and other equipment & machineries. However, these impacts shall be minimize by adopting precautionary and suitable measures such as installation of sewage and effluent treatment plant, utilization of produced water, etc.

Sediments and Soil Quality

The quality of sediments and soil is likely to get affected due to accidental spillage of lubricants & other chemicals, operational discharges, site preparation activities (such as removal of top soil due to land clearance etc.) wastewater discharges, and deployment of rigs etc. However impacts shall be mitigated by adoption of suitable measures and implementation of waste management plan.

Biological Environment

The impacts on flora and fauna may occur due to site preparation activities (land clearance etc.), gas flaring activities, movement of vehicles, noise generation from machineries & equipment, operational discharges and accidental spillage of oil, lubricants and other chemicals during construction and operation phase. However, these impacts shall be local and minimized by adopting suitable measures (such as adequate flare tip design, use of noise attenuation devices, waste management plan etc).

SocioEconomic Environment

The near by human settlement is get meager effects due to proposed activities (such as installation of pipeline, movement of vehicles, operation of generators, compressors and other machineries &

equipments, gas flaring activities etc.) during construction and operation phase ( as most of the sites are located far away from human settlements ). However, these impacts shall be mitigated by adopting suitable measures such as waste management plan, special flare tip design for effective combustion, etc. The proposed activities will generate indirect employment opportunities (contractual basis) in the region. The proposed project will also result in the implementation of social welfare project as per Company’s CSR policy and improvement in existing infrastructure facilities (such as roads etc.).

Social Management Plan (ESR)

S.N Social Need Unit rate (INR) No. of Units Total Cost o per year per annum Facilities for better quality drinking water storage and distribution

1. Installation of R.O Treatment Plant ( 400000 4 16 ,00,000 1000 litter /day)

2. Building storage tanks 400000 3 12,00,000

3. Establishment of distribution system 300000 3 9,00,000

Medical facilities

1 Free health Check up Camps 500000 4 20,00,000

2. Up gradation of Primary health 300000 1 3,00,000 centers

Educational Facilities

1 Maintenance and improvement of 200000 5 10,00,000 Panchayat School building and facilities

Infrastructure Facilities

1. Improvement of existing roads 100000 3 3,00,000

2. Construction of new roads 400000 2 8,00,000

3. Community hall for panchayats 400000 1 4,00,000

Total per annum 85,00,000

5. EVIROMET MOITORIG PROGRAM

An Environmental Monitoring Program is suggested to monitor environmental parameters during the proposed activities. The Monitoring program is given in the following sections.

Drilling & Completion of wells

Drilling Operation Phase and Post Drilling & Well Completion

atural Resources : Daily monitor the quantity of each type of material (including water consumption) and fuel used at project site during drilling operation phase.

Water Quality : The analysis of pH, conductivity, TSS, TDS, heavy metals, BOD, COD, Oil & Grease etc are to be monitored where water up to 1Km radius from project site, once during drilling operation phase.

oise Quality : Monitor the noise level and maintenance of machineries at the project site, once during the well completion at project site.

Sediments Quality : The analysis of Texture, Organic matter, Nitrogen, Phosphorous, oil & grease and Heavy Metal Concentration at the project site during the end of the drilling operation & well completion.

Drilling Waste : During the drilling operation phase, monitor and record the generation of waste quantity on daily basis at drilling site; whereas quantification, characterization of drill cuttings and its safe disposal as per G.S.R. 546 (E), dated 30/08/05.

6. ADDITIOAL STUDIES

Risk Assessment

ONGC is committed to maintain high standards for health and safety at all times. However, on rare occasions, an unplanned event can have the potential to jeopardize the safety of the crew and cause environmental damage. Potential nonroutine events that may occur during the proposed activities of drilling operations, expansion of onshore terminal and installation of pipeline:

• Blowout • Oil Spills

• H2S Emissions • Gas leakage • Fire (if gas comes in contact with source of ignition) • Occupational Hazards

Specific procedures and training will be carried out to ensure that the correct action would be taken in the event of unplanned occurring. The drill site will be equipped with suitable safety measures such as fire fighting facility (fire suit, fire extinguisher, gas sensors etc.), medical facilities etc. The operating personnel will be provided PPEs and trained for such an eventuality and the key responsible people will be required to hold relevant well control certifications.

Disaster Management Plan and Emergency Response Plan

The Disaster Management Plan (DMP) and Emergency Response Plan (ERP) also includes in this chapter. The objectives of DMP and ERP are to:

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• Obtain an early warning of emergency conditions so as to prevent a negative impact on personnel, the environment and assets. • Immediate response to emergency with effective communication and organized procedures. • Safeguard personnel to prevent injuries or loss of life by either protecting personnel from the hazard or evacuating them from the facilities. • Minimize the impact of such an event on the environment and the facilities by mitigating the potential for escalation and, where possible, containing the release. The following key elements of DMP and ERP are: • Contingency plan • Accident prevention procedures/measures • Accident/emergency response planning procedures • Onsite and offsite crisis management, communication, contact information etc.

7. PROJECT BEEFITS

The project will enhance reliable gas supplies, which will bring economic benefits and provide indirect employment opportunities to the local people and also benefit the area by way of improvement in existing infrastructure.

8. EVIROMET MAAGEMET PLA

Sitespecific Environment Management Plans (EMP) has been developed to prevent and mitigate significant adverse impacts and to accentuate beneficial impacts which shall be implemented by ONGC for the proposed project. The relevant mitigation measures are proposed for the following environment issues.

• Rig Mobilization • Wastewater and Effluent Management • Fuels, Lubricants and Chemicals • Nonroutine events and accidental releases (Well kicks, blow out) • Air emissions • Noise and Vibration • Solid wastes (hazardous and nonhazardous waste) • Sediments and soil quality • Ecological Impacts • Socioeconomic impacts

To facilitate field level implementation, a waste management plan is framed which will be subjected to fine tuning depending on site conditions. Appropriate measures and engineering practices will be taken as per established standards and requirements such as adequate stack height, effluent discharge as per CPCB standards, installation of generators set as per notified norms by MoEF, installation of HSD Tanks, fire protection system and occupational health safety program as per OISD rules and Factories Act etc. Socioeconomic welfare plan shall also be implemented as per company’s CSR policy.

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Environmental training is also an essential part, which will help to ensure that the requirements of the EMP are clearly understood and followed by all project personnel throughout the project period for operations. The primary responsibility for providing training to all project personnel will be that of the HSE Officer, ONGC.

9. SUMMARY AD COCLUSIO

ONGC had proposed Drilling of 108 development wells, laying of, 4” and 8” dia. Oil and gas flow lines & establishment of 03 nos. of EPS, 01 No. of WHI , 03 Nos. of Water injection Facilities and 03 nos. of ETPs in operational areas of Cambay Asset.

This EIA study has been conducted for identification of impacts based on the analyzed data (collection from primary and secondary sources) and mitigation measures for minimizing any environmental impact due to the project operations has been suggested. Impacts due to operation of machineries and equipments, operational discharges, accidental spillage of lubricants, oil and other chemicals, movement of vehicles, gas flaring activities, etc during construction and operational phase may affect the terrestrial environment. However, all these impacts shall be minimized by adopting suitable measures, suggested in Environment Management Plan (EMP). As a result of the control measures and management processes in place, there should be no significant impact resulting from the proposed operations. In general, this project will bring economic benefits, increase energy security of the country and generate employment opportunities.

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