Delhi Metro Rail Corporation Ltd

from the test results that water is slightly alkaline with pH varying from 7.2 to 7.4. Dissolved solids were noted as much as 3 to 7 times more than c...

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@ Delhi Metro Rail Corporation Ltd.

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Environmental Impact Assessment (Executive Summary) For IT Park Phase -II

February 2006

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RITES Ltd (A Government of India Enterprise)

RITES BHAWAN, 1, SECTOR - 29, GURGAON - 122 001

Phone: 0124-2571663,2818760,Fax 0124-2571660 e-mail: [email protected] website : www.rites.com

RITES LTD. URBAN ENVIRONMENTAL ENGINEERING

IT PARK PHASE II: EIA

CHAPTER - 0 EXECUTIVE SUMMARY

0.1

INTRODUCTION

The Delhi Metro Rail Corporation (DMRC) has undertaken the development of IT Park, Phase-2 at Shastri Park in close proximity of the MRTS line adjacent to the Shastri Park Station that has already been commissioned. The phased development of MRTS in its totality willprovide excellent connectivity and this would be a key factor to the development" ofthe IT Park, enabling an IT hub close to the urban center of the city of Delhi. The IT Park proposes to hOl!se companies providing information technology enabled services, software development, computer based services etc. The proposed development is planned in phases of 3 lakh sqft totaling to a development of 9 lakh sqft in three phases. The first phase comprising of 3 lakh sqft has already been completed and the

second phase of 3

lakh sqft is proposed to be taken up.

0.2

PROJECTDESCR~nON

The building will consist of ground and eight (G+ 8) floors above two basements for parking. It will have all the modem facilities, specially designed .for software development and computer-based services. The building is being set up with the state-of-the art technology including high end communication facilities, failsafe power supply, scalable international quality business space and intelligent building management systems. The proposed IT Park site is located in East Delhi near Shastri Park Metro Station and is part of the larger piece of land earmarked for residential development for the DMRC employees as well as property development. The site is located along the Grand Trunk Road (GT Road), a National Highway, with a frontage of 350 meters. The Site is bounded by: GT Road in the North; Proposed Residential Development and MRTS Depot Yard in the South; Residential Developmentin the East and Ashram in the West. The project building along with earmarked open ~pace provides for office space for Information Technology related services, common amenities like Auditorium, Business Center/Training Rooms, Restaurants, Cafeteria, Gymnasium and Utility functions like Fax, Xerox, PCO/STD booths etc., Space for Service Providers, Landscape Forecourt, Covered Parking for the offices and, sufficient open parking for visitors. The Construction Schedule for the proposed Phase /I building is spread over 15 months. The estimated cost for the construction of Phase /I building is about Rs 73 crores

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BASELINE ENVIRONMENTAL

DA TA

The baselhie data has been compiled for: Land Environment, Water Environment; Air Environment; Noise Environment; Ecological Environment and Socio-economic Environment. Primary data related to the environmental attributes like air, noise level, water quality and soil was collected through field studies. Information on other aspects was obtained from field observation as well as secondary sources.

Land Environment: Parameters involved in land environment are land use/Jand cover pattern, physiography, geology and minerals, soils, and seismicity. Land Use: The existing land use pattern of 7-km radius project study area indicates that 42.73% of the area is under settlements (permanent! temporary). The second major use is vacant land occupying

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EXECUTIVE SUMMARY

RITES LTD. URBAN ENVIRONMENTAL ENGINEERING

IT PARK PHASE II: EIA

26.14 % area, roads occupy about 23 % of the area and water bodies 4.25%. No forest or cultivated area is falling in the tkm radius project area. Physiography: The Yamuna river, the Aravalli range, and the plains in between dominate the physiography of Delhi formed by alluvium deposits of recent formation. The Delhi Ridge and its four sections, the northern, the central, the south central and the southern constitute the farthest extension of the Aravalli range, its spurs meeting the Yamuna at two locations in Delhi, in the north and the east. The Ridge acts as a barrier between the Thar desert and the plains and slows down the movement of dust and wind from the desert. The green patches of Aravalli, a natural forest, has a moderating influence on temperature, besides bestowing other known benefits on the people. The project site is located on the eastern bank of river Yamuna and the tkm radius project area is plain terrain in general, characterized by the flood plains of Yamuna river. Geology and Minerals: Delhi can be divided into the following four types of geological units viz. the Alluvial plain on eastern and western sides of the ridge, the Yamuna flood plain deposits, the isolated and nearly closed Chattarpur alluvial basin and the NNE-SSW trending Quartzitic Ridge. The Delhi ridge, consists of quartzite rocks and extends from southern parts of the territory to western bank of Yamuna for about 35 kilometers. The alluvial formations overlying the quartizitic bedrock have different nature on either side of the ridge. The Yamuna flood plains contain a distinct river deposit. The nearly closed Chattarpur alluvial basin covering an area of about 48 SqKm is occupied by alluvium derived from the adjacent quartzite ridge. Geology of the project area is characterized by the Yamuna flood plain deposits. Soils and Minerals: Soil test results indicate that organic matter in the soil is low. Composition of soil shows predominance of clay over silt and sand. pH of the soil samples indicate that soil is alkaline in nature. Chloride and sulphate contents in the sub-soil strata are within permissible limit as per IS: 456-2000 and no special precautions are required to be taken to safeguard the foundation concrete and the reinforcement steel against corrosion and sulphate attack. Seismicity: The project area falls in zone-IV of the Seismic Zoning Map of India.

Water Environment Water environment study is important from the point of view to assess the sufficiency of water resources for

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needs of the project in its various stages and tfle impact of the project

on water environment. Delhi receives its water supply from surface flow and groundwater. The water availability from surface water sources, viz. Yamuna, Ganga, and Bhakra systems is approximately 1150 MCM (million cubic meter), and of this 60% is available from Yamuna river. Total groundwater availability is of the order of 290 MCM per year. Delhi receives a total average rainfall of around 730 mm per year. More than half the rainwater runs off and adds to the Yamuna flood. The groundwater table in Delhi has depleted to about 20-30 meters in various areas across the city. Compared to a level of 30-40 feet at the time of Independence, the water table has dropped to 350 feet at certain places. It is said to be falling at 10 feet per year on an average. Groundwater levels have depleted by 26m in Alipur and Kanjhwla blocks, 10m in the Najafgarh block, and about 20 m in Mehrauli blo~k. The quality of underground water is also deteriorating and in several places it has been found to be unfit for human consumption.

Water Quality: In the proposed project, ground water is proposed to be used during construction as well as post construction period; hence its quality has been tested to evaluate its suitability for the intended purpose. Ground water samples were collected from 3 different locations in the project study area and analyzed as per the procedure specified "in standard methods for examination of water and wastewater published by American

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EXECUTIVE SUMMARY

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RITES LTD. URBAN ENVIRONMENTAL ENGINEERING

IT PARK PHASE II: EIA

Public Health Association and the Bureau of Indian Standards (APHA/BIS). It is observed from the test results that water is slightly alkaline with pH varying from 7.2 to 7.4. Dissolved solids were noted as much as 3 to 7 times more than class 'A' water limits. The Magnesium, Nitrate, Fluoride and Sulphate contents are with in the limit, but BOD, iron content, chloride content and calcium are exceeding the class 'A' water limits. \

Air Environment Meteorology: Delhi has an extreme climate, which is very cold in winter and hot in summer. The winters begin in November and are at its peak around the time of New Year till the 1sthalf of January. After the middle of March, the weather begins to turn warm and soon it becomes hot so that from April to June one experiences extreme heat as the temperature climbs to 45°C at times. The monsoon arrives towards the end of June. Delhi has a small rainy season in winter also. Weather is generally dry except for 2-3 months of humidity during the monsoon. Rainfall and Humidity: Delhi has a monsoon climate with an average yearly rainfall of 73cm, 80% of which is received during June-August. The relative humidity at Delhi does not exceed 70% for significant periods of time in the year. Temperature and Humidity: The average annual temperature recorded in Delhi is 31.5° C based on the records of 70 years maintained by the Meteorological Department. Cloud Cover: The sky is generally cloudy during monsoon. Short spells of winter months are also clouded when the area comes under the influence of western disturbances. Winds :The prominent wind direction in Delhi is northwesterly, except during the monsoon season (July to mid September). From wind rose diagrams it is observed that in morning the prominent wind direction is Westerly and in evening it is Northwesterly.

Air Quality: The ambient status of five major air pollutants viz. Suspended Particulate Matter (SPM); Respirable Suspended Particulate Matter (RSPM), Sulphur Dioxide (SOz), Oxides of Nitrogen (NOx) and Carbon Monoxide (CO) representing the quality of pollution level have been assessed by monitoring air quality at three locations viz. Proposed IT Park Phase /I building site, near residential colony of DMRC, Shastri Park Metro Depot of DMRC. The air quality monitoring results indicate that SPM concentration exceeds the limits specified by CPCB for industrial area, except in the time bracket of 6:00-14:00 hrs when it is below the prescribed limit. The RSPM level also exceed the concentration limits for industrial area except in the time bracket of 6:00-14:00 hrs at IT Park location. Rest of the three parameters was noted within the limits for industrial area. Noise Environment: Noise level survey was conducted at the project site with an objective to establish the baseline noise levels and assess the impacts of total noise expected due to the proposed building activity. Noise levels were measured at same three locations where air monitoring was conducted. Noise levels were recorded in the morning (8:00hrs to 10:00 hrs), afternoon (12:00 hrs to 14:00 hrs), evening (16:00 hrs to 18:00 hrs) and night (24:00hrs to 02:00hrs). The results of observations indicate that the equivalent noise levels at all the three sites are below the limit prescribed for commercial area.

Socio-Economics:

Land for the project is already in possession of the DMRC, and no disturbance to the local people will be there due to acquisition of land/property. The project implementation will have short term as well as long term positive impacts on socioeconomics of the area due to employment generation potential. The project area falls in Seelampur Tehsil of Delhi. Total population of Seelampur Tehsil is 9,20,125 with 4,99,957male and 4,20,168 female. Total SC population is 1,20,660.

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EXECUTIVE SUMMARY

RITES LTD. URBAN ENVIRONMENTAL ENGINEERING

ITPARK PHASE II: EIA

Ecological Environment The project site is located in city area and it is free of any plantation etc. Common trees and shrubs found in Delhi are: Aegle marmelos, Albizia lebbeck, Alstonia scho/aris, Azadirachta Indica, Barringtonia acutangula, Bishchoefia javanica, Callistemon lanceolatus, Cassia fistula, Cassia javanica, Cassis fistula, Cedrela Toona, Chukarassia tabularis, Cinnamomum camphora, Cochlospermum gossypium, Delonix regia, Erythrina suberosa, Ficus Glomerata, Ficus infectoria, Ficus religiosa, Grevillea robusta, Hollarrhena pubescens, Jacaranda mimosaefolia, Kigelia pinnata, Koelreuteria apiculata, Lagerstroemia indica, Lagerstroemia speciosa, Lagerstroemia thorelli, Michelia champaca, Mimusops elengii, Nyctanthes arbortristis, Peltaforum species, Pistacia integerrima, Polyalthia longifolia, Pongamia glabra, Pterospermum acerifolium, Putrai1jiva roxburghii, Samania saman, Sapium sebiferum, Sarraca asoka, Schleichera oleosa, Schleichera trijuga, Sterculia alata (Var. diversifolia), Swietenia mahogany, Syzygium cumuni, Syzygium spp., Terminalia arjuna, Terminalia balerica, Terminalia Chebula, Acalypha, Azardirachta indica, Cassia fistula, Cassia glauca, Cestrum nocturnum, Gardenia florida, Hamelia patens, Hibiscus, Lagerstroemia indica, Lausonia indic.a, Murraya, Nerium oleander, Poinciana pulcherrima, Polyalthia longifolia, Tabernaemontana coronaria 0.4

ENVIRONMENTAL

IMPACTS

The primary function of an environmental impact assessment study is to predict and quantify the magnitude of impacts, evaluate and assess the importance of the identified changes and formulate plans to monitor and mitigate the actual changes. Environmental impacts could be positive or negative, direct or indirect, local, regional or global, reversible or irreversible. Impacts Identification: The potential impacts of the project on the environment can be in different phases of project cycle viz. location, construction and operation. The type and magnitude of the impacts, however depends on the specific attributes of the given environment. Impacts on Land Environment:

Displacement of People: There will be no displacement of people due to land acquisition or any other activity related to the project, on-site or off-site since no acquisition of land or property is involved for the proposed project, since the land for it is in possession of DMRC free of any kind of encumbrance. Change in Land Use Pattern: The development on the study area will not bring any changes in the land use pattern, since the new proposed development is planned in the vacant area. The DDA has notified this area as commercial through a gazette notification. The development of building will not have any significant impact on the land use in future; however, it will enhance the aesthetics due to development of a modern building and surrounding horticulture. Impact on Soil Quality/Erosion: The proposed project site is vacant and free of any vegetative cover. The top soil shall be disturbed during the construction stage due to excavation and movement of vehicles and equipment. Exposure of loose soil to rain water may increase turbidity in the run-off, however, this impact is limited to the possibility of excavated surfaces prevailing in the rainy season. On completion of the construction activity, all the unpaved area shall be covered with vegetation, which will reduce soil erosion. No significant impact is expected on the soil. Risk Due to Earthquakes: The project area falls under seismic zone IV as per the Seismic Zoning Map of India (IS 1893, Part-I, 2002). Necessary seismic factors suggested by Indian Meteorology Department (IMD) shall be incorporated suitably while designing the structures to safeguard against earthquake risks. Impact Due to Solid Waste Disposal:

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. EXECUTIVE

SUMMARY

'RITES LTD. URBAN ENVIRONMENTAL ENGINEERING

IT PARK PHASE II: EIA

About 2750 persons will be working in the building during operation phase. The building being an IT park, minimal use of paper is expected, which makes the major part of solid waste during operation. It is considered that about 275 kg of municipal solid waste will be generated every day during the operation phase, which need be disposed effectively.

Impact on Water Environment: Impact on water environment will occur during construction and operation phases.

Impacts on Water Resources During Construction:

Water requirement for the construction as well as operation of proposed building shall be met from 2 No. bore wells within the premises of IT Park. Average estimated requirement of water for various construction activities would be about 180 KL every day. No considerable impact on water table is envisaged due to the withdrawal. About 1500 workers will be working during peak construction. There will be no provision of labour camps at construction site. Provision of adequate drinking water and toilet facilities will be made for the work force. Domestic water requirement during construction period is assessed to about 60KL liters per day. Requirement of water for water closets and urinals for the workers shall be met from the bore-well at site but drinking water (about 7.5 KL) of requisite quality will have to be arranged separately by the contractor. Wastewater generation during construction is assessed to about 48 KL every day, which will be treated through the existing 300 KLD FAB based sewage treatment plant. No negative impact is anticipated due

to the

wastewater

during

construction.

Impact on Water Resources

During

Operation: The total requirement of water during operation shall be about 288.75 KL, out of which about 137.5 KL will be for domestic purpose including drinking. The requirement for HVAC system is estimated to be 125 KL and 10 % incidental dem?nd. The water requirement is to be met from the ground water supply (bore well). Daily sewage flow considering 80 % of the domestic water consumption works out to 110 KI, which will be treated through the existing FAB based sewage treatment plant. The treated effluent from the sewage treatment plant will be used for watering of plants and greenery. The nearest surface water body is river Yamuna, which is about 1.5 km away from the site. No significant adverse impact is anticipated on surface or ground water resources due to operation of the project.

Impacts on Air Environment: In such type of projects, air pollution occurs mainly due to fugitive emissions/dust generation from various construction activities during construction period and vehicular emission during operation period.

Impacts During Construction:

During construction phase, SPM is expected to be the main pollutant associated with the earthwork activities and material handling. The major earthwork activity shall be excavation for basement and foundations. The total quantity of earthwork in excavation would be about 50,000 cum for which two number excavators of 0.90 cum capacity would be required to work for about 20 days. About 40,000 cum earth that would render surplus would have to be transported to the nearby site of DMRC requiring earth filling. About 250 dumper trips would be involved every day in transportation of earth. The total consumption of diesel for earth excavation and transportation machinery would be about 1600 liters per day; however, the onsite consumption of fuel during this period would be only of the order of 400 liters day. SPM generation due to handling of earth and movement of vehicle will be another source of air pollution. It is, however, dependent on the moisture content of earth, and the same can be optimized by adding water in requisite quantity. Minor negative impact within a few meters from the source and within the site would occur on ambient air quality during construction. The resultant concentration of pollutant such as SPM, S02, Nox and CO however, will remain within the limit of CPCB norms for industrial area.. Impacts

0.5

EXECUTIVE SUMMARY

RITES LTD. URBAN ENVIRONMENTAL ENGINEERING

IT PARK PHASE II: EIA

During Operation: During operational phase, vehicular emissions will be the major source of air pollution from IT Park. The pollutants from vehicular emission will be SPM, RSPM, CO2, NOx and CO. The major pollutant from vehicular sources, however, shall be Carbon Monoxide. A Caline3 modeling has been performed, which is an air dispersion

model used

to predict the dispersion of CO from vehicular traffic on road. ISBT-Ghaziabad (GT) road, which faces IT park, is already heavily trafficked of the order of 94,600 pcuslday in both the directions. Peak hour traffic along the ISBT-Ghaziabad road in 2005 was of the order of 9200 pcus. It is assumed that both blocks I and /I of the IT Park will be functional by year 2007 and whole IT Park including phase 11/can be functional by the year 2010. The peak hour traffic from IT Park will be 1200 pcus after construction of phase /I and 1800 pcus after construction of phase 11/of IT Park. Assuming a 5% increase in vehicular traffic, the traffic volume on ISBT-Ghaziabad road will be about 10150pucs and 11750pcus in years 2007 and 2010 respectively. Five receptors are considered at 10m, 15m, 20m, 25m, 30m distances from GT road. CO prediction has been made along the wind direction and in cross wind direction for year 2007 and 2010. It is observed that the CO emissions will be less than the limit of 10mg/m3prescribed by CPCB for one hour time weighted average for industrial area. Impacts

on Noise Environment: Like air environment, impact on noise is also anticipated

during construction and operation phase of the project cycle. Impact during Construction: Construction activities are expected to produce noise levels at source in the range of 75-90 dB (A). It shall be intermittent and decreasing with increase in distance. For an approximate estimation of dispersion of noise in the surroundings form the source point a standard .

mathematicalmodel for sound wave propagationwas used. For modelingpurposes,flat terrain was considered and environmental attenuation factors were not considered so as to formulate the worst case scenario. The impact of noise produced during the construction will, however, be limited to a distance of about 75 meters at which, the noise level of various equipment will come down below 55 dB (A). The construction activities would not have a significant impact on existing ambient noise I~vels, but the personnel operating the machines and the workers stationed close to the machines are prone to exposure of high levels of noise. Impact during Operation: During operation phase of the project major sources of noise pollutant are vehicular traffic, cooling towers, air conditioning unit itself and D.G. sets. Vehicular parking is being provided in the basement of the building where noise levels are expected to be maximum during the morning and evening hours due to operation of vehicles. The modeling for impacts of noise from DG set operation considering the worst case when all the sets are running together indicated the noise level at source would be about 75dB(A). However, it will be less than 55dB(A)with in a distance of 20 m from the source. It could be concluded that noise in the operation phase of the project would have minor negative impact. Impact on TrafficFlow/Congestion: The peak hour traffic on ISBT-Ghaziabad road near IT Park is of the order of 9200 pcus. Operation of the IT Park and other establishment of DMRC at Shastri Park will result in an increase of traffic on the ISBT-Ghaziabad road by about 5%. The IT Park is also connected directly through a foot over bridge to the Shastri Park Metro Station, which provides an excellent connectivity to the IT park through Metro. It is presumed that a major portion of road traffic for the IT park shall be transferred to Metro due to this connection. There would be a minor negative impact on the traffic movement due to operation of the IT Park.

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EXECUTIVE SUMMARY

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RITES LTD. URBAN ENVIRONMENTAL ENGINEERING

IT PARK PHASE II: EIA

Impacts on Biological Environment: No plantation or habitat fof animals is existing at site. Hence no adverse impact on any ecological habitat or vegetation is expected in this case. There will be no conflict regarding the encroachment on nature reserve, as the project area and its surroundings does not come under any nature reserve. No rare or endangered species are reported in the project area. Impact on Bio-diversity: The proposed project does not involve removal of any kind of vegetation during any stage, since the project land is already available and does not have any kind of vegetation over it. No impact on biodiversity is expected as a result of the project.

Socio-Economic Impacts: Land for construction of the project is in possession of the project proponent. It does not involve acquisition of any land or any other kind of property, and therefore does not involve any social issues. Construction of the project would employ about 1500 persons and about 2750 persons will find employment in the proposed project during operation. The proposed IT Park would also create indirect business and employment opportunities related to its operation. Impact on Historical and CulturalMonuments: No Historical or Cultural Monuments will

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be affected/lost due to the construction of project.

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spread over a period of 15 months. During this period manpower of all kind will be needed to work for the project. About 1500 persons are likely to work during the peak construction activity. In the post construction phase the project will provide social benefits in terms of direct employment by generating large number of jobs in various position both in supervisory and non-supervisory positions. Improvement in Aesthetics: The project area is going to improve upon the aesthetics of the entire place by way of providing a pleasing architectural design of the building that blends with the landscape. The green belt surrounding the entire IT park will also add to the improvement of aesthetics.

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Positive Impacts: Employment Opportunities:. The construction phase of the project is

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ENVIRONMENTAL

MANAGEMENT

PLAN

An EMP for the project has been prepared and presented, which defines actions to be undertaken during the pre-construction/design (including those already undertaken), construction, and operation stage of the project.

Pre- ConstructionlDesign Stage Mitigation Measures: The pre-construction stage measures, already taken care in the project design are: Water conservation; Bioclimatic design aspect; Reduction in incremental air pollution through traffic management; Landscape and Fire fighting/management. Water Conservation: Water Balance Statement Presently the complete water demand is proposed to be met from ground water. It is suggested that DMRC should arrange for alternative source of water supply through other sources (piped supply from MCD) to the tune of 300KL per day. In such case the net recharging of ground water table shall be to the tune of 13.18 ML per annum.

Reduction in fresh water/water requirement: During operation period about 110 KL of sewage will be generated from the project, which will be treated through the FAB treatment plant provided by DMRC. The treated wastewater will be used for horticulture. It will reduce the fresh water demand to the extent of 100 KL per day. Other measures adopted to reduce the consumption of water are: Reduction of toilet cistern volume by way of providing single

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EXECUTIVE

SUMMARY

RITES LTD.

.

URBAN ENVIRONMENTAL

IT PARK PHASE II: EIA

ENGINEERING

flush module, promotion of awareness on water conservation and reducing water usage, promptly attending the water leakages, providing urinals and wash basins with automatic sensors and WCs with flushing valves, sprinkler irrigation system for watering of green spaces.

Rain Water Harvesting: Rainwater harvesting can serve as a solution to the water problem in the water crises areas by capturing the runoff. Rainwater harvesting helps in utilizing the primary source of water and prevents runoff from going into sewer or storm drains, thereby serving dual purpose, making water available for future use and reducing the load on treatment plants as well as on other service lines. In the IT Park rainwater will be harvested from rooftop, paved and unpaved areas.

Bio-Climatic Design Aspect: Energy conservation measures: Improvement in efficiency of lighting system has been achieved by making provision' of the most efficient lamps for the purpose, taking into account size, shape, colour and output of the lamp, replacing standard choke ballasts with high frequency electronic bal(asts, retrofitting standard luminaries with high-efficiency spectacular reflectors or replacing standard luminaries with high-efficiency luminaries. Installation of (a) timer circuits that switch lamps off during room vacancy times, (b) photoelectric sensors that sense the amount of daylight in the room and switch lamps on or off accordingly and (c) occupancy sensors that switch lamps off when work stations are unoccupied. Localized switches near work stations to control local lighting, designing lighting systems that maximize the use of daylight, such as the PSALI system (permanent supplementary artificial lighting in interiors), ) introducing local task lights (e.g. desks lights), allowing a reduction in general overhead lighting, setting up a maintenance schedule to

cleanandreplacelampson a regularbasisshallalso saveenergy

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Selection of Construction Material: Use of burnt clay bricks in masonry is a common practice in the country. In this project concrete blocks are proposed to be used in masonry in place of burnt clay bricks. The IS code of practice for concrete mix design allows for use of fly ash up to 30 % volume of cement. Use of fly ash in concrete would have a double edge effect i.e., it will utilise fly ash on one hand and reduce the requirement of cement on the other hand.

Orientation and Layout: The building uses varied elements arising out of climatic responses. The southern face of the building with recessed strip windows restricts light penetration during the summer while allowing for winter light. The area of glass is restricted on southern face. The northern face that abuts GT road has been carefully articulated with Glass Curtain Walling to allow for natural lighting. Reduction

of Incremental Air-pollution through Traffic Management: Reduction in incremental air pollution from vehicular emissions in the proposed IT Park project has been 'aimed through state of the art traffic management. The foot over bridge connecting IT park with Shastri Park Metro Station will further reduce the traffic to and from IT Park thereby reducing the congestion on GT road. Adequate parking space for occupants and visitors of the building has been planned. Landscape and Green Area Development: The greenbelt development/plantation in the IT park area will not only function as landscape features resulting in harmonising and amalgamating the physical structures of proposed buildings with surrounding environment but will also acts as pollution sink/noise barrier. It will check soil erosion, make the

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EXECUTIVE SUMMARY

RITES LTD. URBAN ENVIRONMENTAL ENGINEERING

IT PARK PHASE II: EIA

ecosystem more diversified and functionally more stable, make the climate more conducive and restore balance. All the land sites subject to use of construction related activities shall be restored to the original setting by restoration and landscaping of the sites. Sites subject to excavation and tampering of ground profile shall be rectified and done by the Contractor before final closure of the construction activities. Landscaping of the areas within the premises of IT park and approach road to IT Park shall also be taken up during construction period. Overall the project area shall be restored to the natural setting in an environmentally sound manner.

Fire Fighting / Management: The fire protection system will be based on the requirement of National Building Code (NBC) of India (2001), Tariff Advisory Committee's TAC, Fire Protection Manual (1998) and other relevant codes. The fire protection system will cover external as well as internal premises of the building. Systems planned to be provided for the building are: wet riser cum down comer system. yard (External) Hydrants, automatic fire sprinkler system, HVW spray system for oil type transformer,

analogue addressable type

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automatic fire detection & alarm system, portable fire extinguisher, photo luminescent safety signage.

Construction Stage Mitigation Measures: The construction stage mitigation measures, include: Recycling of construction waste, Air Pollution Control, Noise Control, Solid Waste Management, Sewage Treatment and Workers Health Management. Recycling of Construction Waste: Left over concrete and mortars, cement concrete blocks, aggregate, sand and other inorganic material will be recycled and used as Granular Sub-base (GSB) layer of pavement. Though it is quite difficult to estimate the volume of such waste, a rough estimate of 200 cum is arrived. Reuse of this will also save an equivalent quantity of aggregate. About 40,000 cum of earth rendered surplus from the excavation will be utilised in the embankment of DMRC works. As a result there would not be any inorganic solid waste rendered surplus from the project and requiring disposal. Air Pollution Control: The mitigation measures, which shall be adopted to reduce the air pollution are: Transportation of construction materials shall be carried out during non-peak hours; To minimise dust emission due to handling of aggregate and cement at site, ready mix concrete carried in transit mixers shall be used; Provisions shall be made for sprinkling of water on the roads at least once a day during the entire construction period; Every day the haul road at the construction site shall be inspected and the debris ,left by the tractor trolleys shall be removed as early as possible; Vehicle speed restriction of 15kmph shall be applied at site; Downwash of trucks (especially tyres) prior to departure from site; Proper care shall be taken for storage of furnace oil, LDO, etc.; The work schedule and the operation time of each construction machinery shall be planned to optirnise the use of construction machinery; All stationary machineSlDG sets emitting the pollutants shall be inspected weekly for maintenance and shall be fitted with exhaust pollution control devices. Noise Control: Mitigation/management measures which shall be adopted during construction period are: Special acoustic enclosures shall be provided for individual noise generating construction equipment like DG sets; Safety equipments shall be provided to those workers who will be working very close to noise generation source; Strict adherence to maintenance schedule of generators, as specified by vendors, shall be observed; Staff to use earplugs inside DG room, Smooth flow of traffic shall be ensured on the internal road to avoid idling and honking of vehicles. Solid Waste Management: Domestic solid waste during construction shall be limited because no labour camps are permitted at site. However, even when there are no labour camps at site and most of the inorganic construction waste will be recycled and reused in

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EXECUTIVE SUMMARY

RITES LTD. URBAN ENVIRONMENTAL ENGINEERING

IT PARK PHASE II: EIA

construction, there will still remain some solid waste requiring collection and disposal. This will include; food waste of workers at site, empty containers of paints and other chemicals, packaging of tiles and glass, sweepings from office etc. Measures that shall be adopted during construction for management of solid waste are: Covered garbage bins shall be provided at suitable locations at site including office;. These bins shall be emptied daily into a bigger container and the waste finally put to nearby municipal collection bin.. The waste bins shall be washed regularly every week, Inorganic waste shall be segregated and kept in different heaps as far as possible so that their further gradation and reuse is facilitated, Material, which can be recycled and reused for the purpose of construction, shall be kept in'" separate heaps from those, which are to be sold or disposed off, Empty containers, which may contain some toxic substances such as paints, solvents, adhesives and sealants shall be returned to the manufacturers or disposed appropriately as the case may be, till such

timethey shall be storedsafely.

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Sewage Treatment: The project will generate about 48 KL of wastewater every day, which will be treated through the existing 300 KLD FAB based sewage treatment plant. The treated wastewater from the treatment plant shall be utilized for horticulture purposes. Workers Health Management: The project construction would involve deployment of about 1500 workers during the peak period. Hutments for workers are not permitted at site and they will commute daily to the site. Provision for safe drinking water would be arranged through the contractor. Providing 5 litres per person the requirement of drinking water comes out to 7.5 KL. Separate arrangement of WCs for gents and ladies would be made with water bound sanitation. A qualified medical attendant with adequate medicines and other facilities need be stationed at site through out the construction period to take care of . any first aid to the workers. Operation Stage MitigationMeasures: The operation phase mitigation measures would include: Air Pollution and noise control, Solid Waste Management and Sewage Treatment Air Pollution and Noise Control: During Operation Phase, the major source of air pollution and liaise are vehicular traffic and DG sets. For DG sets control measures to be adopted are: Scrubber to be installed at the outlet of the DG sets, Good quality fuel with low sulphur content to be used, Periodic maintenance of DG sets as per defined schedule of manufacturer and maintaining proper stack height for DG exhaust. Air and noise pollution control can also be enhanced by planting certain species of plants/trees. Solid Waste Management: Majority of the solid waste will comprise of waste papers, food waste and green area sweepings, all of them are biodegradable. The non-biodegradable waste will comprise of the floor and road sweepings and the IT waste. The biodegradable and non-biodegradable waste shall be segregated during collection by using different colour-bins for different type of waste. Every workstation shall be provided with such bins. In addition collection bins shall be provided at suitable locations in common place and open area for waste collection from floating population. The biodegradable as well as the nonbiodegradable waste shall be transferred everyday to the larger bins kept outside the building at suitable place. To avoid odour and accumulation of fly-supporting materials, waste collection bins shall be washed at frequent intervals. The IT waste shall however be stored ih a separate facility and shall be disposed off through an authorised person/agency for that purpose. The solid waste shall finally be transferred to municipal corporation facility for its treatment and disposal. . Sewage Disposal: The project would generate about 110 KL of wastewater. The wastewater is planned to be treated in the already existing 300 KL FAB type sewage treatment plant. Treated wastewater from the plant shall be utilised for irrigation of green area and horticulture of the IT Park.

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EXECUTIVE SUMMARY

RITES LTD. URBAN ENVIRONMENTAL ENGINEERING

IT PARK PHASE II: EIA

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ENVIRONMENTAL CONCLUSION

MONITORING

PLAN

AND

COST

ESTIMATE

AND

The environmental monitoring will be required during construction and operational phases for: Water Quality, Air Quality and Noise Level, Soil Conservation, Rainwater Harvesting Structures. Environmental Cost Estimate: Most of the items mentioned in the environmental management plan have already been included/are proposed to be included in the project cost. For example the cost of energy conservation measures, rain water harvesting, traffic management, water treatment, sewage treatment, solid waste management, development of green area make part of the project itself and their cost included in the project cost. Certain items like health care and medical facility to workers, provisions of safe drinking water and sanitation facility for workers will make part of the contractual obligations of the construction contractor. The environmental cost of the project is, basically the environmental monitoring cost and works out to Rs. 12.13 Lakhs.

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EXECUTIVE SUMMARY