Enviranmental impact assessment

7/27/2019 Enviranmental impact assessment

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RITES LTD.EIA for Metro Depot at Central Park Kolkata for E-W Metro Corridor Urban Environmental Engineering

CHAPTER 3 3.1 ENVIRONMENTAL BASE LINE DATA

CHAPTER 3

ENVIRONMENTAL BASE LINE DATA

3.1 GENERAL

The objective of Environmental Impact Assessment (EIA) is to ascertain the baselineenvironmental conditions and then assess the impacts as a result of the proposedproject during various phases of the project cycle. Identification of environmentalparameters, data collection and impact predictions form the core of Environmental

Assessment process. A Scoping matrix has been formulated to identify the attributeslikely to be affected due to proposed project and presented as Table 3.1. The

environmental baseline includes inventory of physical, ecological and socio-economicparameters. The data has been compiled for:

Land Environment (land use, geology, seismology and soils);

Water Environment (water resources, water use, water quality, hydrology);

Air Environment (air quality);

Noise Environment (noise levels); Ecological Environment (terrestrial ecology); and

Socio-Economic Environment (demography, socio-economic, public health)

Based on environmental scoping matrix and project setting, the attributes likely to beaffected are identified for baseline data generation. The information presented in thischapter has been collected from various sources. Majority of data has been collectedfrom field studies. Field studies have been carried out in July 2007 to generate primarydata on water, noise, soil, air quality, ecology and socio-economics at the project site.Formal and informal discussions were held with the local people, project affected peopleand local government/non-government organizations. These have provided very useful

information, which have been integrated while preparing this report. Information onproject facilities, size, magnitude and cost of the construction activities, geology and,seismology of the project site has been taken from the Supplementary DPR (May, 2007).Photographs of field visits are placed as Annexure-3.1

Study of literature, books, maps and reports have also provided useful secondary dataon the project. The methodology adopted for data collection is highlighted wherevernecessary and the frequency adopted for data collection for environmental attributes issummarized in Table 3.2.

TABLE 3.1SCOPING MATRIX

Aspect Of Environment Likely ImpactsA. LAND ENVIRONMENT

Construction Phase Change of land use

Pollution by construction spoils

Problems due to muck disposal from work camp

B. WATER RESOURCES & WATER QUALITY

Construction Phase Increase in turbidity of nearby receiving waterbodies

Degradation of water quality due to disposal ofwastes from construction sites.

Operation Phase

Increase of water demand


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Aspect Of Environment Likely Impacts

Impact to water quality of water body by sewagewater

Oil/fuel and waste spills

Use of rain water harvesting

C. TERRESTRIAL ECOLOGYConstruction Phase Loss of trees

Operation Phase Green belt development

D. SOCIO-ECONOMICS

Construction Phase Land Acquisition

Improved employment potential during projectconstruction phase

Development of allied sectors leading to greateremployment.

Pressure on existing infrastructure facilities such

as electric line, etc.Operation Phase Real estate value enhancement and increased

commercial activity

E. AIR POLLUTION

Construction Phase Impacts due to emissions generated byconstruction machinery and Diesel Generator sets

Increase in SPM

Impacts due to increased vehicular movement

Operation Phase Less air pollution

F. NOISE POLLUTION

Construction Phase

Noise due to operation of various equipment Noise due to increased vehicular movement

Noise due to more human activities

Operation Phase Impact on Noise from Depot

G. Traffic Pattern

Construction Phase Traffic congestion due to construction materialtruck movement

Operation Phase Increased traffic

H. PUBLIC HEALTH

Construction Phase Increased incidence of water related diseases

Transmission of diseases by immigrant labourpopulation

Operation Phase Less diseases due to less pollution

TABLE 3.2ENVIRONMENTAL ATTRIBUTES AND FREQUENCY OF MONITORING

S.No

Attribute Parameter Frequency Source

LAND ENVIRONMENT

1 Soil Soil Characteristics ---- Field studies and project report

2 Geology Geological Status --- Literature review

3 Seismology Seismic Hazard --- Literature review


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S.No

Attribute Parameter Frequency Source

WATER ENVIRONMENT

4 Water Quality Physical, Chemical and

Biological parameters

One Season Field studies/literature review

AIR, NOISE AND METEOROLOGY

5 Ambient Air Quality RSPM, SPM, SO2,,NOx,CO, HC

One Season Field Studies/literature review

6 Meteorology Temperature, Relativehumidity, Rainfall

Data India MeteorologicalDepartment/literature review

7 Noise Noise levels in dB (A) One Season Field monitoring

SCIO-ECONOMIC

8 Socio-economicaspects

Socio-economiccharacteristic of the

affected area

--- Field Studies, Literature review.

3.2 PHYSIOGRAPHY

Kolkata is located in eastern India at 2233 N, 8820 E in the Ganges Delta at anelevation ranging between 1.5 to 9 metres. It is spread linearly along the banks of theRiver Hooghly in a north-south direction. Much of the city was originally a vast wetland,reclaimed over the decades to accommodate the city's burgeoning population. TheSundarbans National Park separates the city from the Bay of Bengal, which is locatedabout 154 km to the south. The slope is about 0.3m per km. Kolkata is situated mainly ondensely consolidated alluvial soil of quaternary period. The upper layer of soil is,however, presumed to be of tertiary and Mesozoic periods.

3.3 SOILS AND GEOLOGY

Like the most of the Indo-Gangetic plains, the predominant soil type is alluvial.

Quaternary sediments consisting of clay, silt, various grades of sand and gravel underliethe city. These sediments are sandwiched between two clay beds, the lower one atdepths between 250 and 650 m and the upper one ranging between 10 and 40 m inthickness. Kolkatta Metropolitan area is located on the lower deltaic plain of thecomposite Ganga-Bhagirathi delta and is covered by the sediments deposited by theriver system flowing through the area during quaternary era.

The sub surface geology of the area is completely obscured by a blanket of Recentsediments. The upper 300m of sediments are of Quaternary era and consists ofalternations of clay, silt, sand and occasional pebble beds. Formation belonging to theQuaternary system are principal depository of the ground water in the area. Although

lithological characters of these formations are fairly well known from the study of theboreholes logs. The demarcation of the boundary between the Pleistocene andHolocene ages in the vertical sequences has not been possible due to variety of reasonslike absence of lithological contrasts, texture, colour etc. and inadequacy of faunal andfloral evidences.

In order to ascertain the quality and nature of soil within the vicinity of the project site,three soil sample were collected from the Depot Site. The sample were tested forphysical and chemical properties. The results of soil analysis is presented in Table 3.3


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TABLE 3.3PHYSIO-CHEMICAL CHARACTERISTICS OF SOILS

S.No.

Sample /Parameter Soil SampleNear Gate

Soil samplebackside of

office building

Soil SampleNear lake

1 pH 7.1 6.8 7.3

TextureSand (%) 72.8 70.7 81.30

Silt (%) 10.1 8.4 7.8

2

Clay (%) 17.1 20.9 10.9

3 Nitrogen (%) 0.16 0.12 0.054 Phosphate (%) 0.018 0.021 0.012

5 K (%) 0.084 0.077 0.062

6 Ca (%) 0.24 0.21 0.117 Mg (%)


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harness river water. From Palta, water is taken down to Tala reservoirs along theBarrackpore road from where the treated water is distributed to different parts of the citythrough four zonal mains and a vast network of smaller water lines. Since long, the Pala

Tala system with a capacity 727 mld was the source of surface water for water supplyto the city. Due to rapid growth of population, increase in salinity in the Hoogly River,excessive leakage through old pipe network and loss of pressure head due to longconveyance, the situation becomes increasingly difficult to maintain adequate watersupply in the city. But with construction of Farakka Barrage and diversion of sweet waterto the river Hoogli there has been marked reduction in the salinity of river water. After theestablishment of the KMDA, developmental works for improvement of surface to KMCand other towns in the Kolkatta Municipal area have been undertaken.

In seventies the water works at Palta was modernized. Subsequently two intermediatereservoirs and booster pumping stations were set up at Raja Subodh Mallik Square and

Auckland Square. These have proved very effective in improving water supply to SouthKolkatta. In 1982 a new water works was set up at Garden Reach to supply water to newKMC area like Behala, Garden Reach, Tollygunj and Jadavpur.

3.4.2 Ground water

Due to large-scale withdrawal of groundwater from the confined aquifers, a depression ofpiezometric surface in Central and South Central Kolkata has developed. The magnitudeof the depression is 6-8 metres, and has developed over a period of about 40 years(1958-98) in the core sector covering Narkeldanga- Park Circus Bhowanipur.

As a result, the general southerly flow in the confined aquifers has become radial in amuch larger area surrounding the cone of depression. The central part of KolkataMunicipal Corporation area is drawing water from all directions resulting in its radial flow.

The predominance of impervious clay in the near surface strata of Kolkata area and itsimmediate neighborhood inhibits local recharge to deeper aquifers in Kolkata area. Thedirection of ground water flow indicate that the recharge area for Kolkata region lies inthe north and western part of the Greater Kolkata region. The major aquifer of thenorthern part of Greater Kolkata are interconnected with the near surface ground watersand beds at Kalyani-Ranaghat and Shantipur area in Nadia district.

In the west, the Cis Damodar belt similarly has extensive near surface sand beds ofconsiderable thickness. Extensive sand is acquired from these along the belt fromTarakeswar - Nalikul Mogra to Pandua and adjoining region. These sand beds formfavourable zones of intense recharge.

3.4.3 WATER QUALITY

Water availability and its quality will play a significant role in the project. In the extremenorthern part (North of Shyambazar area) chloride concentration in ground water isabove 5000mg/l. Similarly in the western part of Alipur i.e. in Garden Reach and adjacentarea the chloride concentration in ground water is above 500mg/l. In the area lyingbetween Beleaghata and Park Street chloride concentration in ground water is between250mg/l and 500 mg/l. In Garia Jadavpur sector chloride concentration in ground wateris within 250 mg/l. In the extreme northern part of KMC area iso-conductance value isabove 2000 micro siemen/cm at 25

OC. In Park Street Camac Street, Shyambazar,

B.B.D. Bag and Dhapa areas iso-conductance value is between 1500-2000 microsiemen/cm at 25OC. In Sealdhah Beleghata Narkeldanga area and Garia Putiari


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Behala area iso-conductance value is between 1000-1500 micro siemen/cm at 25OC. In

Garden Reach area iso-conductance value is more than the 1000 micro siemen/cm at25

OC. Ground water occurring in the alluvial sediments show much variation in their

chemical character.

In order to collect baseline data on the existing water quality, one ground water and twosurface water sample were collected in the project study area and analyzed as per theprocedure specified in standard methods for examination of water and wastewaterpublished by American Public Health Association and the Bureau of Indian Standards(APHA/BIS). The results of the physio-chemical analysis are summarized in the Table3.4 The results of the samples shows that all the parameters tested are with in the

desisable lime as per IS: 10500/91

TABLE 3.4CHEMICAL ANALYSIS OF WATER SAMPLES

LocationS.No.

Parameter

Groundwater

Sample

SurfaceWater

Sample oftank

backsideof office

LakeWater

Sample

Desirable

limit Asper IS:10500/91(Max.)

Permissible

limit as perIS:10500/91(Max.)

1 pH Value 7.4 7.6 7.7 8.5 NoRelaxation

2 TDS (mg/l) 245 229 288 500 2000 Max3 TSS (mg/l) 21 15 14 - -

4 Iron as Fe (mg/l) ND ND ND 0.3 1 Max

5 Phosphates as PO4 (mg/l) 0.2 0.2 0.3 - -6 Chloride as Cl (mg/I) 71 6 91 250 1007 Calcium as CaCO3 (mg/l) 19 26 30 75 200

8 Sulphates as SO4 (mg/l) 20 4 16 200 4009 Total Alkalinit as HCO3

(mg/l)58 117 67 200 600

10 Nitrates as NO3 (mg/l) 2 2.4 2 45 NoRelaxation

11 Fluorides as F (mg/l)


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TABLE 3.5TREES AT THE DEPOT SITE

S.No Tree Species Inside the campus Inside the campusalong the boundary

wall

1 Peepal, 10 25

2 Jam, 13 16

3 Jamun, 7 204 Royal, 13 18

5 Imli, 7 46 Neem, 20 25

7 Ber, 7 28 Eucalyptus 2 12

9 Mangos 10 9Total 89 131

Grand Total 220Source: Consultant Field Study

3.6 METEOROLOGY AND AIR QUALITY

Meteorology is an important parameter in environmental impact assessment exercise. Allair pollutants emitted by point and non-point sources are transported, dispersed orconcentrated by meteorological and topographical conditions. The main parameters are:temperature, humidity, rainfall, winds and cloud cover. The meteorology and airenvironment of the area are discussed in subsequent sections.

3.6.1 Meteorology

Kolkata has a tropical climate. The annual mean temperature is 26.8 C (80 F). Monthlymean temperatures range from 19 C to 30 C (67 F to 86 F). Summers are hot and

humid and maximum temperatures often exceed 40 C (104 F) during May and June.Winter tends to last for only about two and a half months, with seasonal lows dipping to12 C 14 C (54 F 57 F) between December and January. The highest recorded

temperature is 43.9 C (113 F) and the lowest is 5 C (41 F). Often during earlysummer, dusty squalls followed by spells of thunderstorm and heavy rains lash the city,bringing relief from the humid heat. These thunderstorms are convective in nature, and is

locally known as Kal baisakhi (Nor'westers).

Rains brought by the Bay of Bengal branch of South-West monsoon lash the city

between June and September and supplies the city with most of its annual rainfall of1,582 mm. The highest rainfall occurs during the monsoon in August (306 mm). The city

receives 2,528 hours of sunshine per annum, with the maximum sunlight occurring inMarch. Regional Meteorology Department, Kolkata monitors meteorological parametersfor Kolkata. Table 3.6 shows the mean maximum, mean minimum. mean total rainfall

and mean number of rainy day of Kolkata.


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TABLE 3.6MEAN TEMPERATURE, MEAN RAINFALL AND MEAN NUMBER OF RAINY DAYS IN

KOLKATA

Mean TemperatureOCMonth

Daily Minimum Daily MaximumMean Total

Rainfall(mm)

Mean Numberof Rainy Days

January 13.9 26.6 16.8 0.9February 16.9 29.7 22.9 1.5

March 21.7 34.0 32.8 2.3April 25.1 36.3 47.7 3.0

May 26.4 36.0 101.7 5.9

June 26.5 34.1 259.9 12.3July 26.1 32.2 331.8 16.8

August 26.1 32.0 328.8 17.2September 25.8 32.2 295.9 13.4

October 24.0 31.9 151.3 7.4November 18.9 29.8 17.2 1.1

December 14.3 27.0 7.4 0.4Source:http://education.vsnl.com/calweather/calidx.htm

3.6.2 Air Quality in KMA

For the City of Kolkata, monitoring of ambient air quality dates back to 1972. Themonitoring stations recorded only SPM level between 1972-78, but added SO2 and NOxfrom 1978. This system continued to function till 1988, under Global EnvironmentalMonitoring System (GEMS) programme conducted by National EnvironmentalEngineering Research Institute (NEERI), Nagpur. The Central Pollution Control Board(CPCB) began monitoring at four stations in Howra in 1978. The West Bengal PollutionControl Board (WBPCB) contracted Centre for Study of Man and Environment (CSME)

and the All India Institute of Hygiene and Public Health (AIIHPH) in 1972 to monitorSPM, SO2, NOx at eight additional stations of Greater Kolkata.

The results of analysis of secondary data show that in the KMA area, the SPM valuesare fairly high in the range of 400 micrograms per cubic meter. The annual mean SO2concentration is comparatively less and is generally below 20 micrograms per cubicmeter. The annual mean NOX concentration indicates an increasing trend, reaching

around 70 microgram per cubic metre. Though SPM concentration is higher thanpermissible limit, SO2 and NO2 were lower in ambient air quality of KMC.

According to Central Pollution Control Board, vehicular emission load in Kolkata is 312tons/day. Carbon dioxide is 203 tons/day, Hydrocarbons 47 tons/day, Nitrogen Oxides

53 tons/day and others 9 tons/day. The SPM, SO2 and NOx at traffic intersections werereported in increasing trend with the increase in vehicles in the city.

Lead was detected at traffic intersections in past when leaded petrol was in use invehicles. Now lead was reported in the range of 0.96 microgram per cubic meter to 7.42

micro gram per cubic meter.

The main fuels used in vehicles are petrol and diesel. The main pollutants that come outfrom the exhaust of vehicular engines are:- Carbon dioxide;- Carbon monoxides;-

Oxides of Nitrogen,


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- Oxides of Sulphur,- Hydrocarbon, and- Particulate Matter.

In addition to above pollutants, unburnt products like aldehydes, formaldehydes,acrolein, acetaldehyde and smoke would also be emitted from petrol and diesel operatedvehicles. The concentration of these pollutants in the engine exhaust varies with thetype of engine namely, spark ignition (petrol engine) or compression ignition (dieselengine) two stroke or four stroke engines; and also mode of engine operation. Table 3.7

gives the emission factor of major pollutants from petrol (SI), diesel (CI) and CNGengines. Diesel exhaust concentration of hydrocarbons is more than that of SI engineexhaust. Carbon monoxide concentrations in diesel engine exhaust is negligible to thatof S I engines. Concentrations of oxides of nitrogen is more in diesel exhaust. Thusdiesel engine exhaust contains lower concentrations of harmful pollutants likehydrocarbons, carbon monoxide and therefore, it is less hazardous

West Bengal pollution control is carrying out ambient air quality monitoring in Kolkata at

different location for SPM, RSPM, SO2, and NOx on daily basis. Average value ofmonitoring results for Kolkata is presented in Table 3.8 for the month of July 2007 and agraphical representation is shown in Figure 3.1. Ambient air monitoring is also carried

out by WBPCB at Salt Lake area. The result of the air monitoring at Salt Lake carried outby WBPCB is presented in Table 3.9 and the graphical representation is given in Figure3.2. As a part of this study, ambient air quality monitoring (AAQM) has been carried out

by setting up ambient air quality monitoring stations at the Depot site during July 2007.Result of ambient air quality monitoring carried out by the consultant at Depot site ispresented in Table 3.10. The parameters monitored are RSPM, SPM, SO2, NOx, CO

and HC. The ambient air quality data indicates all the parameters are less than theprescribed limits established by Central Pollution Control Board (CPCB) Table 3.11

shows the ambient air quality standards

FIGURE 3.1AVERAGE VALUE OF MONITORING RESULTS FOR THE KOLKATA

0

20

40

60

80

100

120

140

1/7/2007

2/7/2007

3/7/2007

4/7/2007

5/7/2007

6/7/2007

7/7/2007

8/7/2007

9/7/2007

10/7/2007

11/7/2007

12/7/2007

13-7-2007

14-7-2007

15-7-2007

16-7-2007

17-7-2007

18-7-2007

19-7-2007

20-7-2008

21-7-2008

22-7-2009

23-7-2009

24-7-2010

25-7-2010

26-7-2011

27-7-2011

28-7-2012

29-7-2012

30-7-2013

Date

Concentration(g/m3)

SPM

RPM

SO2

NOx


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TABLE 3.7EMISSION FACTORS FOR DIFFERENT VEHICLES

TYPE NORMS CO HC NOx PM

India Stage 2000 norms (Euro-I) 2.4 0.48 0.39 0.04

Bharat Stage-II (Euro-II) 1.98 0.25 0.2 0.03

Bharat Stage-III (Euro-III) 1.39 0.15 0.12 0.02

PCG/MUVG PassengerCar gasoline (PGCL)

Multilevel Utility VehicleGasoline (MUVG) Bharat Stage-IV (Euro-IV) 1.0 0.126 0.127 0.016




PCD/MUVD

Passenger Car Diesel(PCD) Multi utilityVehicle Diesel (MUVD) Bharat Stage-IV (Euro-IV) 0.50 0.056 0.5 0.05




LCV

Bharat Stage-IV (Euro-IV) 0.50 0.030 0.025 0.025




Trucks





Bus


2001-2005 norms (India Stage2000 norms)

2.2 2.13 0.06 0.052 Wheelers 2 stroke

2005-2010 norms (Bharat StageII norms)

1.4 1.32 0.07 0.05

2 Wheelers 4 stroke 2001-2005 norms (India Stage2000 norms)

2.2 0.7 0.3 0.05

FIGURE 3.2

MONITORING RESULTS FOR THE SALT LAKE AREA

0

20

40

60

80

100

120

140

5/7/2007

7/7/2007

9/7/2007

13-7-2007

19-7-2007

22-7-2007

25-7-2007

29-7-2007

Date

Concentration(g/m3)

SPM

RPM

SO2

NOx


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TYPE NORMS CO HC NOx PM

2005-2010 norms (Bharat StageII norms)

2.4 0.7 0.3 0.05

2001-2005 norms (India Stage2000 norms)

4.3 2.05 0.11 0.083 Wheelers 2 stroke

2005-2010 norms (Bharat Stage

II norms)

2.45 0.75 0.12 0.08

CNG Bus 2001 Norms 0.66 2.75 9.87 0.05

3 Wheeler 2 Stroke 2001 Norms 0.29 1.45 0.02 ---

3 Wheeler 4 stroke 2001 Norms 0.29 2.40 0.75 ---

TABLE 3.8AVERAGE VALUE OF MONITORING RESULTS FOR THE KOLKATA

Date SPM

g/m3

RPM

g/m3

SO2

g/m3

NOx

g/m3

1-7-2007 77 30 4 332-7-2007 92 33 5 443-7-2007 74 33 4 314-7-2007 70 22 4 365-7-2007 84 30 5 456-7-2007 60 19 4 407-7-2007 61 22 5 418-7-2007 70 25 4 369-7-2007 103 42 5 47

10-7-2007 106 42 5 4411-7-2007 117 45 5 4812-7-2007 89 33 4 4413-7-2007 103 42 5 4614-7-2007 105 38 5 40

15-7-2007 100 35 6 4516-7-2007 74 28 5 4117-7-2007 63 22 5 3818-7-2007 76 27 5 4919-7-2007 92 32 4 49

Source http://wbpcb.gov.in

TABLE 3.9MONITORING RESULTS FOR THE SALT LAKE AREA

Date SPM

g/m3

RPM

g/m3

SO2

g/m3

NOx

g/m3

5-7-2007 100 33 5 497-7-2007 61 22 5 419-7-2007 83 29 4 4913-7-2007 103 42 5 4619-7-2007 62 22 4 53

Source http://wbpcb.gov.in


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TABLE 3.10AIR QUALITY AT PROJECT SITE

S. No. Location SPMg/m

3

RSPM SO2g/m

3

NOxg/m

3

CO

g/m3

HC

g/m3

4 PM to 12

Midnight

121.0 55.0 10.5 27.0 1.1


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have monitored noise within Kolkata Metropolitan Area. These are Central PollutionControl Board (CPCB), Department of Ecological Studies, School of EnvironmentalSciences, Kalyani University, West Bengal Pollution Control Board (WBPCB), BoseInstitute and All India Institute of Hygiene and Public Health. The noise levels in theKMC area are reported high. The regulatory mechanisms are apparently ineffective tothe extent that the average ambient noise level even in the declared Silence Zonereached 79 dB (A) and 65 dB (A) during day and night respectively as against the limit of50 dB (A) and 40 dB (A) and nearly equals to the prescribed upper limit for industrialzone

Monitoring of noise level for public transport system (buses, metro-rail, trams, &suburban-trams), showed the highest value in Metro system (Max : 98 dBA with averageof 92 dBA) followed by bus, tram and suburban trains (Average +- 90 dBA) at source.The results of monitoring in Public Places (Movie Hall; Market; Eateries) revealed morethan 80 dBA. Finally, noise level during festival season always exceeded the normalvalue.

RITES has measured noise levels at Depot site in July 2007 as per standard practice.The noise levels so obtained are summarised in Table 3.12. It could be concluded thatthe noise levels recorded at various places are higher than prescribed permissible levelsof 55-dB(A) (day) and 45-dB(A) (night) for residential areas. Noise level standards areshown in Table 3.13

TABLE 3.12NOISE LEVELS AT DEPOT SITE

Location Time Leq Lmax Lmin Leq(day) Leq(Night)

06-08 56.50 58.20 54.20

09-11 55.20 58.30 52.90

12-14 56.00 59.10 53.70

15-17 57.00 60.10 54.70

Average 56.18 58.93 53.88

18-20 53.20 56.30 50.90

21-23 51.50 54.60 49.20

NearGowdown

Average 52.35 55.45 50.05

56.18 51.50

06-08 61.00 64.30 58.65

09-11 62.30 65.60 59.95

12-14 62.50 65.80 60.15

15-17 65.20 68.50 62.85

Average 62.75 66.05 60.40

18-20 59.20 61.20 56.85

21-23 57.60 59.50 55.25

Near Gate

Average 58.40 60.35 56.05

62.75 57.60

06-08 53.50 55.08 51.15

09-11 54.60 56.18 52.25

12-14 55.70 57.28 53.35

15-17 56.80 58.38 54.45

Average 55.15 56.73 52.80

18-20 51.20 52.76 48.35

21-23 49.85 51.41 47.00

Near Lake

Average 50.53 52.09 47.68

55.15 49.85


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TABLE 3.13NOISE LEVELS STANDARDS dB(A)

Leq IN dB(A)CATEGORY OF ZONES

DAY * NIGHT

Industrial 75 70Commercial 65 55

Residential 55 45

Silence Zone ** 50 40Source: Central Pollution Control Board* Day Time is from 6.00 AM to 9.00 PM.** Silence Zone is defined as an area up to 100m around premises of Hospitals, Educational Institutions and

3.9 EPILOGUE

Based on environmental baseline data documented in this chapter and project featuresreported in chapter 2, the environment impacts are described in chapter 4.

FIGURE 3.3SEISMIC ZONING MAP OF INDIA


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ANNEXURE 3.1

AIR MONITORING AT DEPOT SITE

SOIL SAMPLE COLLECTION AT DEPOT SITE


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LOCATION OF LAKE WATER SAMPLE

LOCATION OF SURFACE WATER SAMPLE


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GODOWNS AT DEPOT SITE

TREES AT DEPOT SITE

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