Form – I M/s. Tata Communications Ltd
FORM – I I. BASIC INFORMATION
S. Item Details No. Expansion of the existing office building ( Internet 1 Name of the project Data Centre and Office Building) by M/s. Tata Communications Ltd 2 S. no. in the schedule 8 (a) Area Details: After Description Existing Expansion (EC Sought) Total Plot Area 84457 84457 3 Proposed area (Sqm) 36854 (EC obtained); Built Up Area 8627.59 (EC 65254.66 (Sqm) to be obtained) 4 New/Expansion/Modernization Expansion Plot area : 84457 Sqm Built-up Area (After Expansion): 5 Existing capacity/Area etc Existing Environmental Clearance vide Letter SEIAA/TN/EC/8(a)/028/F.100/2008 Dated: 03.01.2009 enclosed in Annexure 6 Category of project i.e. ‘A’ or ‘B’ B Does it attract the general 7 No condition? If yes, please specify Does it attract the specific 8 No condition? If yes, please specify T. S. No. 2/1, Block No.11, Old S. No. 782/2, 784/Part, 785/ Part, 786/Part of Korattur Village, T. Plot/Survey/Khasra No S. No. 1/1, Block No. 2, Old S. No. 222/1 Part of 9 Menambedu Village Village Korattur and Menambedu Village Tehsil Ambattur Taluk
Form – I M/s. Tata Communications Ltd
District Tiruvallur District State Tamilnadu Railway station : Ambattur Railway Station (2.42 Nearest railway station/airport Km, South) 10 along with distance in km Airport : Chennai international airport (14.06 km, South) Nearest town, city, district Town : Ambattur (2.4 km) 11 headquarters along with
distance in km Village panchayats, Zilla parishad, municipal 12 corporation, local body Ambattur (Complete postal addresses with telephone nos. to be given) 13 Name of the applicant M/s. Tata Communications Ltd., Registered Office: M/s. Tata Communications Ltd., 14 Registered address No. 226, Red hills Road, Kallikuppam, Ambattur, Chennai – 600 053. Tel: 044-66674568/90430-03242 Address for correspondence: No. 226, Red hills Road, Kallikuppam, Ambattur, Name Chennai – 600 053. Designation 15 Address Pin code E-mail Telephone No. / Fax No. Details of alternative sites examined, if any, Location of 16 Not applicable these sites should be shown on a topo sheet 17 Interlinked projects No interlinked projects Whether separate application of 18 interlinked project has been No submitted? 19 If yes, date of submission Not applicable 20 If no, reason Not applicable
Form – I M/s. Tata Communications Ltd
Whether the proposal involves approval/clearance under: if yes, details of the same and their status to be given. 21 (a) The forest (conservation) Not required Act, 1980? (b) The wild life (Protection) Act, 1972? (c) The CRZ Notification 1991 Whether there is any 22 government order/policy No relevant/relating to the site 23 Forest land involved (hectares) None Whether there is any litigation pending against the project and/or land in which the project is propose to be set up? 24 a) Name of the Court No b) Case No c) Orders/directions of the court, if any and its relevance with the proposed project
II. ACTIVITY 1. Construction, operation or decommissioning of the Project involving actions, which will cause physical changes in the locality (topography, land use, changes in water bodies etc.)
Details thereof (with approximate quantities S. Information/Checklist Yes/ /rates, wherever possible) with sources of No. confirmation No information data Permanent or temporary change in land use, land cover or topography The project site falls under Mixed residential 1.1 Yes including increase in zone intensity of land use (with respect to local land use
Form – I M/s. Tata Communications Ltd
plan) Clearance of existing land, Around 200 trees have to be removed which will 1.2 Yes vegetation and buildings? be replanted for OSR and Green Belt purpose Creation of new land The proposed development falls in Mixed 1.3 Yes uses? Residential Zone. Pre-construction Geo-technical investigations have been carried 1.4 investigations e.g. bore Yes out and the copy of the report is enclosed as holes, soil testing ? Annexure The Project involves Construction of IDC and 1.5 Construction works? Yes office buildings. 1.6 Démolition Works ? No The proposed site is vacant land. All the construction activities including stacking Temporary sites used for of raw materials will be confined within the construction works or project site only. No temporary labour hutments 1.7 No housing of construction are proposed. Local laborers from nearby areas workers? will be hired for the work. Proper sanitation facilities for them will be provided at site. 1.8 Above ground buildings, structures or earthworks The details of the structure is given in including linear Yes Conceptual plan structures, cut and fill or excavations Underground works 1.9 including mining or No Not applicable. tunneling? 1.10 Reclamation Works? No No reclamation work required. 1.11 Dredging? No No dredging required. 1.12 Offshore structures? No No offshore structures required. Production and 1.13 No No production/manufacturing process involved. manufacturing processes? Separate raw material handling yard will be located within the project site and separated by Facilities for storage of enclosures/barricades. Cement will be separately 1.14 Yes goods or materials? stored under cover in bales. Sand will be stacked under tarpaulin cover. Bricks and steel will be laid in the open. 1.15 Facilities for treatment or Yes Solid Waste:
Form – I M/s. Tata Communications Ltd
disposal of solid waste or Construction Phase liquid effluents? About 135 kg/day of Solid wastes will be generated in which 8 kg/day organic waste will be disposed through municipal bins and 54 kg/day inorganic waste will be handled by authorized recyclers. Operation Phase 320 kg/day of solid waste is generated in existing phase and 620 kg/day of solid wastes are likely to be generated for the proposed project Liquid Effluent: During construction, sewage was treated and disposed through Septic Tank. During operational phase, sewage generated after full development will be treated up to tertiary level in STP of capacity 70 KLD (Existing) and 230 KLD (Proposed) and the treated effluent will be reused for toilet flushing and gardening. The estimation of water requirement and the water balance is detailed in Environmental Management Plan. Facilities for long term No No facilities for long term housing of operational 1.16 housing of operational workers were provided. workers? New road, rail or sea It is expected traffic of 1371 cars and 2647 two 1.17 traffic during No wheelers will be generated from project site construction or operation? during operation phase. New road, rail, air waterborne or other Project site is accessible and is well connected transport infrastructure 1.18 No via road. No new road, rail, air waterborne or including new or altered other transport infrastructure will be developed. routes and stations, ports, airports etc? Closure or diversion of No Closure or diversion of existing transport existing transport routes 1.19 No routes or infrastructure leading to changes in or infrastructure leading traffic movements is done to changes in traffic
Form – I M/s. Tata Communications Ltd
movements? New or diverted There will not be any new/diverted transmission 1.20 transmission lines or No lines or pipelines around the proposed project. pipelines? Impoundment, damming, culverting, realignment or No impoundment, damming, culverting, 1.21 other changes to the No realignment or other changes to the hydrology of hydrology of surface watercourses is proposed. watercourses or aquifers? 1.22 Stream crossings? No There are no streams running across the site. Abstraction or transfers of No abstraction or transfers of water from ground 1.23 water from ground or No or surface waters is envisaged. surface waters? Changes in water bodies or the land surface 1.24 No No changes in water bodies or land surface affecting drainage or run- off? Transport of personnel or Transportation of personnel and material by materials for construction, 1.25 Yes road was done by the contractors during the operation or construction phase. decommissioning? Long-term dismantling or decommissioning which No Long term dismantling or decommissioning 1.26 No could have an impact on or restoration works will be involved. the environment? Ongoing activity during decommissioning which 1.27 No There is no decommissioning works. could have an impact on the environment? There will be a permanent influx of people after the construction phase. In addition to this there Influx of people to an area will be an influx of population due to the 1.28 in either temporarily or Yes development of supporting facilities and permanently? ancillary developments stimulated by the project. Introduction of alien 1.29 No No introduction of alien species species?
Form – I M/s. Tata Communications Ltd
The existing land has only weeds and is devoid Loss of native species or No 1.30 of any other vegetation. So there will be no loss genetic diversity? of significant native species or bio-diversity. 1.31 Any other actions? No –
2. Use of Natural resources for construction or operation of the Project (Such as land, water, materials or energy, especially any resources which are non-renewable or in short supply):
Details thereof (with approximate quantities / S. Information/Checklist Yes/ rates, wherever possible) with sources of No. confirmation No information data Land especially undeveloped 2.1 Yes No applicable. or agricultural land (ha) Construction Stage: About 15 KLD of water was used during the peak construction phase and it was sourced through private tankers arranged by the Water (expected source & 2.2 Yes contractor. competing users) Unit: KLD Operation Stage: About 73 KLD of raw (fresh) water will be required at full development and this will be met from CMWSSB. 2.3 Minerals (MT) No Not envisaged. Construction material – 2.4 Construction materials will be sourced from stone, aggregates, and / soil Yes the local market. (expected source- cum) Forests and timber (source– 2.5 No MT) The power sanctioned for the existing building is 36 MW and it is sourced from TNEB Grid Energy including electricity with a power back up of 24 DG sets (2500 and fuels (source, competing kVA x 7; 2500 kVA x 11; 2250 kVA x 3; 1500 2.6 Yes users) Unit: fuel (litres/hour), kVA x 1; 1250 kVA x 1; 750 kVA x 1). The energy (kVA) power requirement for the proposed building is 20 MW, which will be sourced from the nearby TNEB grid and it is distributed through
Form – I M/s. Tata Communications Ltd
the transformers within our premises. In Emergencies, DG sets of following capacities will be used. 20 DG sets (1800 kVA x 20) are proposed for the new buildings, which will cater the essential load requirement during power failure. Any other natural resources No 2.7 (use appropriate standard NA
units)
3. Use, storage, transport, handling or production of substances or materials which could be harmful to human health or the environment or raise concerns about actual or perceived risks to human health.
Details thereof (with approximate quantities S. Information/Checklist Yes/ /rates, wherever possible) with sources of No. confirmation No information data The proposed project is a development of Use of substance or office building and no storage of hazardous materials, which are chemicals (as per MSIHC) will be done, apart hazardous (as per MSIHC 3.1 Yes from Diesel. HSD (of low sulphur content) rules) to human health or will be used for DG sets. Necessary permission the environment (flora, is obtained from the authorities concerned for fauna, and water supplies) storage of the same. Suitable drainage and waste management Changes in occurrence of measures will be adopted to prevent disease or affect disease 3.2 No stagnation of water and restrict accumulation vectors (e.g. insect or water of waste. This will effectively restrict the borne diseases) reproduction and growth of disease vectors. Storage, transport, handling or production of Affect the welfare or people any harmful product is not envisaged in this 3.3 e.g. by changing living No project. Thus no major adverse impacts on the conditions? human health/environment are envisaged Vulnerable groups of people 3.4 No Not envisaged who could be affected by the
Form – I M/s. Tata Communications Ltd
project e.g. hospital patient’s children, the elderly etc., 3.5 Any other causes No
4. Production of solid wastes during construction or operation or decommissioning (MT/ month)
Details thereof (with approximate quantities S. Information/Checklist Yes/ /rates, wherever possible) with sources of No. confirmation No information data Spoil, overburden or mine Not envisaged 4.1 No wastes The solid waste will comprise biodegradable waste e.g. domestic waste, food waste, horticultural waste etc. and recyclable waste, like plastics, paper etc.
Biodegradable Wastes: 0.56 T/day Non-biodegradable Wastes: 0.37 T/day
Municipal Solid Waste: In the existing building complex, private sweepers are already engaged for handling domestic waste. Municipal waste (domestic 4.2 Yes and or commercial wastes) Adequate number of collection bins separately for biodegradable and non-biodegradable waste has been provided as per the Municipal Solid Waste (Management and Handling) Rule, 2000. Waste from such bins are collected separately on daily basis and taken to a separate centralized collection facility. Final segregation of solid waste into biodegradable, non-biodegradable, and inert fraction are done in the centralized collection facility. The biodegradable wastes are collected by the local municipal dealers and the non biodegradable
Form – I M/s. Tata Communications Ltd
wastes are given to the authorized recyclers.
For the expansion, It is proposed to treat the Bio degradable wastes through Organic Waste Converter and non bio degradable recyclable waste will be handed over to authorized recyclers.
Horticultural wastes: Leaves, grass and vegetative residues shall be collected at the secured location such that it will not hinder daily activity schedule or washed away by the surface run-off causing choking of drains, etc. and will be separately disposed off along with biodegradable waste. Spent Oil from DG sets: The spent oil will be stored in HDPE drums in Hazardous wastes (as per isolated covered facility. This will be then sold No 4.3 Hazardous Waste to the recyclers authorized by SPCB/MoEF for
Management Rules ) further treatment. Care will be taken to avoid the spills/leaks of spent oil from storage facility. Other industrial process 4.4 No Not applicable wastes 4.5 Surplus product No Not applicable Sewage sludge or other Sewage sludge generated from STP will be 4.6 sludge from effluent Yes used as manure treatment Construction waste generated will be limited to the construction phase and project site. These will be reused for backfilling after Construction or demolition 4.7 Yes manual segregation. Unusable and excess wastes construction debris will be disposed at designated places in time with the local norms. Redundant machinery or 4.8 No Not applicable equipment
Form – I M/s. Tata Communications Ltd
Contaminated soils or other 4.9 No No contamination of soils or other materials. materials 4.10 Agricultural wastes No No agricultural wastes is generated 4.11 Other solid wastes No Not applicable
5. Release of pollutants or any hazardous, toxic or noxious substances to air (Kg/hr)
Details thereof (with approximate quantities S. Information/Checklist Yes/ /rates, wherever possible) with sources of No. confirmation No information data
Pollutants like particulate matters, CO, SO2 and NOx will be released into the atmosphere due to the operation of DG sets and other machineries of construction which uses fossil Emissions from combustion fuels. However the DG sets are operated only 5.1 of fossil fuels from stationary Yes during power cuts. Also the use of HSD (of or mobile sources lower sulphur content) and dispersion of the DG flue gases through stacks having heights as per norms of CPCB will minimize the impacts. Emissions from production 5.2 No No production processes are involved processes There will be restricted to the construction Emissions from materials phase and construction only. However, the 5.3 handling including storage Yes generation of such emission will be very or transport minimum. Emissions from construction activities will be reduced by using low sulphur content HSD Emissions from construction for the machineries operated with fossil fuels 5.4 activities including plant and Yes and the accumulation of particulate matter in equipment the atmosphere will be suppressed by sprinkling of water in the dust prone areas at regular intervals. Dust or odors from handling Dust is generated at the construction site is 5.5 of materials including Yes suppressed by sprinkling water at site. On-site construction materials, sanitation facilities are provided for the sewage and waste. workers.
Form – I M/s. Tata Communications Ltd
Emissions from incineration 5.6 No There are no incineration activities involved. of waste Emissions from burning of waste in open air (e.g. slash Open burning of biomass / other material will 5.7 No materials, construction be prohibited debris) Emissions from any other 5.8 No Not applicable sources
6. Generation of Noise and Vibration, and Emissions of Light and Heat:
Details thereof (with approximate quantities S. Information/Checklist Yes/ /rates, wherever possible) with sources of No. confirmation No information data Noise control systems such as equipment From operation of equipment foundation pads, dampeners, silencers and 6.1 e.g. engines, ventilation Yes acoustic enclosures, are used for individual plant, crushers units to minimize the noise & vibration. From industrials or similar 6.2 No Not applicable processes No construction activity is carried out during night hours. Noise during the construction From construction or 6.3 Yes activities are kept minimum by proper and demolition regular maintenance of construction machineries. No blasting or mechanized piling will be done 6.4 From blasting or piling No in construction phase. During construction phase, Proper maintenance and care is taken to reduce the From construction or impact of vehicles for transporting the 6.5 Yes operational traffic materials, while operational traffic will not contribute much towards noise. Further trees are planted to minimize the impact. Necessary care would be taken at the time of From lighting or cooling selection of equipment to minimize the noise 6.6 Yes systems or heat. Proper preventive maintenance will be adopted during the operation stage.
Form – I M/s. Tata Communications Ltd
6.7 From any other sources No Not applicable
7. Risks of contamination of land or water from releases of pollutants into the ground or into sewers, surface waters, groundwater, coastal waters or the sea:
Details thereof (with approximate quantities S. Information /Checklist Yes/ /rates, wherever possible) with sources of No. confirmation No information data Spent oil from DG sets (Hazardous waste category 5.1) will be stored in drums and kept From handling, storage, use in a separate enclosure / covered shed for sale 7.1 or spillage of hazardous Yes to CPCB / TNPCB – authorized waste oil materials recyclers. Handling of spent oil will be done on impervious concrete platform. The wastewater after treatment will be reused From discharge of sewage or for toilet flushing and gardening. Hence, other effluents to water or 7.2 No there will be no discharge of treated the land (expected mode and wastewater from the premises that may cause place of discharge) any adverse effect on environment. The DG Sets will be provided with stacks of By deposition of pollutants adequate height and will be air cooled. Hence 7.3 emitted to air into the land or No dispersion will be achieved and avoid into water deposition of pollutants in significant concentrations at any single location 7.4 From any other sources No Not Applicable Is there a risk of long term build up of pollutants in the 7.5 No Not Applicable environment from these sources?
8. Risk of accidents during construction or operation of the Project, which could affect human or the environment
Details thereof (with approximate quantities S. Information/Checklist Yes/ /rates, wherever possible) with sources of No. confirmation No information data 8.1 From explosions, spillages, No The project is a development of office
Form – I M/s. Tata Communications Ltd
fires etc from storage, building. Hence, it does not involve any handling, use or production probable explosions, spillages and fires. of hazardous substances During construction, all the laborers are provided with suitable personal protective equipment (PPE) as required under the health & safety norms. Training and awareness about the safety norms are provided to all supervisors and laborers involved in construction activity. No major hazardous waste will be stored within the project site. No industrial or process activity is involved in this project. Hence, chances of chemical hazards and accidents are normally nil. However, suitable fire-fighting measures will be provided. 8.2 From any other causes No Not Applicable The area under study falls in Zone-III, Could the project be affected according to the Indian Standard Seismic by natural disasters causing Zoning Map. Suitable seismic coefficients in 8.3 environmental damage (e.g. No horizontal and vertical directions floods, earthquakes, respectively, are incorporated in designing landslides, cloudburst etc)? the structures.
9. Factors which should be considered (such as consequential development) which could lead to environmental effects or the potential for cumulative impacts with other existing or planned activates in the locality
Details thereof (with approximate quantities S. Information/Checklist Yes/ /rates, wherever possible) with sources of No. confirmation No information data Lead to development of The project may trigger the development of supporting facilities, ancillary supporting and ancillary facilities, and development or development further may lead to other developments. This 9.1 stimulated by the project Yes will not lead to any potential negative which could have impact on impacts on environment. the environment e.g.: Supporting infrastructure
Form – I M/s. Tata Communications Ltd
(roads, power supply, waste or wastewater treatment, etc.) Housing development Extractive industries Supply industries Other Lead to after use of the site, 9.2 which could have impact on No Not applicable the environment The proposed development will set a Set a precedent for later precedent for later developments; improve 9.3 Yes developments the socio economic conditions of nearby areas. Have cumulative effects due to proximity to other existing 9.4 No Not applicable or planned projects with similar effects
II. ENVIRONMENT SENSITIVITY
Aerial distances (within 15 S. Areas Name/Identity km.) Proposed project No. location boundary Areas protected under international conventions, national or local legislation 1. No Not applicable for their ecological, landscape, cultural or other related values Areas which are important or Puzhal lake 0.343 Km, N sensitive for ecological Ambattur lake 3.21 Km, SW reasons – Wetlands, water Korttalaiyar river 14.80 Km, NE 2. courses or other water Cooum River 6.28 Km, SE bodies, coastal zone, Adyar River 11.54 Km, SES biospheres. Mountains, Alamadi RF 6.4 Km, NW
Form – I M/s. Tata Communications Ltd
forests Erumaivettipalayam RF 11.12 KM, NWN TG canal 4.1 Km, NW Areas and by protected, Not applicable important or sensitive species 3. of flora or fauna for breeding, No nesting, foraging, resting, over wintering, migration Inland, coastal, marine or 4. No Not applicable underground waters National highways NH 716 – adjacent to site 5. State, National boundaries Yes towards North NH – 45: 251 m, E Routes or facilities used by the public for access to 6. No Not applicable recreation or other tourist, pilgrim areas 7. Defense installations No Not applicable Densely populated or built- Ambattur 2.57 km (SW) 8. up area Puzhal 5.50 Km (NE) The surrounding area has few sensitive man-made land uses such as Hospitals and Colleges. Annai Violet IS (CBSE) lies at a distance Areas occupied by sensitive of 0.83 km (WNW), Sethu man-made land uses Bhaskara Matriculation 9. (hospitals, schools, places of Yes Higher Secondary school worship, community lies at a distance of 1.01 W facilities) km, Velammal Vidhyashram lies at a distance of 1.82 km, West, C.T. Thomas college for women lies at a distance of 8.54, East. Areas containing important, Puzhal lake 0.343 Km, N 10. high quality or scarce Ambattur lake 3.21 Km, SW
Form – I M/s. Tata Communications Ltd
resources (Groundwater / Korttaliyar River 14.80 Km, NE surface water resources, Cooum River 6.28 Km, SE forestry, agriculture, Adyar River 11.54 Km, SES fisheries, tourism, minerals) TG Canal 4.17 Km, NW Areas already subjected to pollution or environmental 11. No Not applicable damage. (where existing legal standards are exceeded) Areas susceptible to natural hazard which could cause the project to present The area under study falls environmental problems in Zone-III, according to 12. No (earthquakes, subsidence, the Indian Standard landslides, erosion, flooding Seismic Zoning Map. or extreme or adverse climatic conditions)
“I hereby given undertaking that the data and the information given in the application and enclosures are true to the best of my knowledge and belief and I am aware that if any part of the data and information submitted is found to be false or misleading at any stage, the project will be rejected and clearance given, if any, to the project will be revoked at our risk and cost.”
Date: Place: Chennai Signature of the Applicant
Form – IA M/s. Tata Communications Ltd
FORM IA (Checklist of Environmental Impacts)
I. LAND ENVIRONMENT
Details thereof (with approximate quantities Information/Checklist S. No. /rates, wherever possible) with sources of confirmation information data Will the existing land use get significantly altered from the project that is not constant Project site comes under Mixed Residential with the surrounding? Zone. Project development will lead to (Proposed land use must generation of paved & green areas at project site. conform to the approved Documentary evidence for land use map and Master Plan / Development land ownership is enclosed as Annexure. Project Plan of the area. Change of site is surrounded by various commercial land use if any and the developments. Project site is accessible and is statutory approval from the well connected via network of rail & road. 1.1 competent authority are submitted). Attach maps of (i) Site Location; (ii) Surrounding features of the The project is located at Korattur, Menambedu proposed site (within 500 Village of Ambattur Taluk, Tiruvallur District. meters) and (iii) the site The Topo map showing surrounding features of (indicating levels & contours) the Proposed Site, Master Plan is attached as to appropriate scales. If not Annexure. available attach only conceptual plan.
Form – IA M/s. Tata Communications Ltd
Total built-up area after expansion: 110737.19 Sqm List out all the major project Total Water requirement after Expansion: 607 requirements in terms of the KLD land area, built up area, water, 1.2 Fresh water requirement after Expansion : 427 power requirement, KLD community facilities, parking Power requirement : 56 MVA needs etc. Car Parking Provided: 1371 Nos. Two Wheeler Provided: Nos. 2647 Nos. Since the proposed project is expansion of IDC What are the likely impacts of and Office Building, there will be a permanent the proposed activity on the influx of people due to the proposed activity. existing facilities adjacent to Local Community: the proposed sites? (Such as 1.3 The operation of project and other allied open spaces, community facilities will provide direct and indirect facilities, details of the existing employment opportunities for a large section of land use, disturbance to the society. The employment will have positive local ecology). impact thereby increasing the quality of life. Will there be any significant land disturbance resulting in Based on the type of soil and contour of the erosion, subsidence & surface there won’t be any erosion, subsidence 1.4 instability? (Details of soil type, or instability. The project site falls under Zone- slope analysis, vulnerability to III of the seismic category in India. subsidence, seismcity etc may be given). Will the proposal involve alternation of natural drainage The proposal will not alter the natural drainage systems? (Give details on a 1.5 system. The contour plan of the project site is contour map showing the enclosed as Annexure. natural drainage near the proposed project site) What are the quantities of The study area is a flat terrain, thus there was earthwork involved in the not more excavated materials during construction activity – cutting, construction activities. The excavated soil 1.6 filling, reclamation etc. (Give obtained was utilized for backfilling and leveling details of quantities of the site. No fill materials from outside were earthwork transport of fill utilized.
Form – IA M/s. Tata Communications Ltd
materials from outside the site etc.) Water Supply The water requirement during the construction phase of the project will be 15 KLD. It will be sourced through tankers. Waste Handling The wastes during the construction phase Give details regarding water comprised of the wastes generated by the 1.7 supply, waste handling etc workers and the wastes generated as the result of during the construction period. the construction activity. The wastes generated by the workers are treated and disposed of by providing temporary septic tanks with soak pit arrangements. The construction debris is used for the formation of roads within the development.
Will the low lying areas get There are no low-lying areas which are going to altered? (Provide details of how 1.8 be affected as the site will be leveled uniformly low lying area getting modified during construction phase. from the proposed activity) The generation of construction wastes will be Whether construction debris & about 40 - 50 kg/m2 of construction area. These waste during construction will be used for the formation of roads within cause health hazard? (Give the premises. quantities of various types of 1.9 wastes generated during The wastes generated by the workers will be construction including the treated and disposed of by septic tanks with soak construction labour and the pit arrangements. Therefore no significant means of disposal) health hazard is observed.
Form – IA M/s. Tata Communications Ltd
II. WATER ENVIRONMENT
Details thereof (with approximate quantities Information/Checklist S. No. /rates, wherever possible) with sources of confirmation information data Source of S. No. Description Quantity Supply Private I Construction phase 15 KLD Give the total quantity of water Tankers requirement for the proposed II Operational phase (After expansion) Fresh Water project with the breakup of a 115 KLD CMWSSB (Domestic) requirements for various uses. Fresh water 2.1 How will the water 312 KLD CMWSSB (HVAC) requirements met? State the b Recycled Water Requirement sources & quantities and
furnish a water balance Flushing 95 KLD
statement. Treated OSR 30 KLD Sewage Gardening c 55 KLD requirement What is the capacity The source of fresh water is CMWSSB. The required 2.2 (dependable flow or yield) of fresh water is 427 KLD the proposed source of water? What is the quality of water required, in case, the supply is not from a municipal source? The quality of fresh water required will be as 2.3 (Provide physical, chemical, per IS 10500: Drinking Water Standards. biological characteristics with class of water quality) During construction, sewage is treated and disposed through the existing Sewage treatment How much of the water plant. During operational phase, sewage requirement can be met from generated of quantity 199 KLD after full 2.4 the recycling of treated development will be treated in STP of capacity wastewater? (Give the details of 70 KLD and 230 KLD and the treated effluent quantities, sources and usages) will be reused for toilet flushing, OSR and gardening.
Form – IA M/s. Tata Communications Ltd
Will there be diversion of water from other users? (Please No, there will not be any diversion of water 2.5 assess the impacts of the project from other users. on other existing uses and quantities of consumption) During operational phase, sewage generated of What is the incremental quantity 199 KLD after full development will be pollution load from wastewater treated in STP of capacity 70 KLD and 230 KLD generated from the proposed and the treated effluent will be reused for toilet 2.6 activity? (Give details of the flushing, OSR and gardening quantities and composition of The quality of the wastewater generated will be: wastewater generated from the pH (6.5-8.5), BOD (250-350 mg/l), COD (900- proposed activity) 1000mg/l), SS (150 mg/l), and Oil & Grease (100 mg/l). The rain water from the project site is collected and stored in a storm water collection sump and Give details of the water it is re-used for domestic/gardening purposes. requirements met from water 2.7 The rain water from the roads/pavements and harvesting? Furnish details of landscape are collected and recharged through the facilities created. recharge pits along the boundary. The same will be upgraded to meet the proposed expansion. What would be the impact of the land use changes occurring due to the proposed project on the runoff characteristics The runoff will increase due to the (quantitative as well as development. Proper storm water storage 2.8 qualitative) of the area in the sumps, drains are designed for collection and post construction phase on a recharge of the runoff. Hence, no water logging long-term basis? Would it problems are anticipated. aggravate the problems of flooding or water logging in any way? What are the impacts of the The source of water supply for the project site is proposal on the ground water? CMWSSB. Extraction of ground water is not 2.9 (Will there be tapping of envisaged. Further Rain water harvesting and ground water: give the details recharge will be done to augment the ground of ground water table, water levels.
Form – IA M/s. Tata Communications Ltd
recharging capacity, and approvals obtained from competent authority, if any) What precautions/measures are taken to prevent the run-off Construction area will be kept clean and from construction activities maintained without contamination, thereby 2.10 polluting land & aquifers? (Give avoiding pollution of the surface runoff during details of quantities and the construction phase. Suitable drains as per the measures taken to avoid the prevailing contour of the plot will be developed. adverse impacts) How is the storm water from within the site managed? (State Storm water drains are designed based on the the provisions made to avoid average intensity of rainfall in that area. Further 2.11 flooding of the area, details of storm water collection and storage sumps have the drainage facilities provided been planned to manage the excess storm water with a site layout indication during the flooding season. contour levels) Local labors from nearby areas were deployed for the project work and hence no labor camp Will the deployment of was provided. Furthermore proper sanitary construction laborers facilities like temporary toilets and wash area particularly in the peak period 2.12 are provided to laborers during working time lead to unsanitary conditions and also the wastewater is disposed using septic around the project site (Justify tank with soak pit arrangements. Hence there with proper explanation) will not be any unsanitary conditions around the project site. Internal toilets of building will be connected to a horizontal header at the ground floor then led What on-site facilities are out to sewage treatment plant located within provided for the collection, the project premises. The wastewater generation treatment & safe disposal of from the project is estimated to be about 199 sewage? Give details of the 2.13 KLD, which will be treated in proposed sewage quantities of wastewater treatment plants. generation, treatment capacities
with technology & facilities for Recycled water is used for flushing and recycling and disposal ) gardening. Solidified sludge will be stabilized and dewatered, composted along with the
Form – IA M/s. Tata Communications Ltd
organic wastes and used as manure within the premises. Give details of dual plumbing Dual Plumbing system is provided for reuse and system if treated waste used is 2.14 recycle of treated sewage within the complex used for flushing of toilets or for flushing, and gardening purposes. any other use.
III. VEGETATION
Details thereof (with approximate quantities Information/Checklist S. No. /rates, wherever possible ) with sources of confirmation information data Is there any threat of the There is no threat to the biodiversity due to the project to the biodiversity? proposed development as the trees that have to 3.1 (Give a description of the local be cleared for the proposed project will be ecosystem with its unique replanted for OSR and Green belt purposes features, if any) Will the construction involve extensive clearing or 200 trees have to be cleared for the proposed modification of vegetation? 3.2 project which will be replanted for OSR and (Provided a detailed account of Green belt Purpose the trees & vegetation affected by the project) What are the measures The landscape for the proposed project has been proposed to be taken to planned to provide a clean, healthy and green minimize the likely impacts on environment for the residents. Total green belt important site features (Give area of 15588 Sqm is designated for further 3.3 details of proposal for tree development. Various species of trees are plantation, landscaping, proposed to be planted (Please refer species creation of water bodies etc details in EMP) to create a clean and healthy along with a layout plan to an environment. appropriate scale)
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IV. FAUNA
Details thereof (with approximate quantities Information/Checklist S. No. /rates, wherever possible) with sources of confirmation information data Is there likely to be any Landscaping and greenbelt planned in the displacement of fauna-both project site will have direct positive impact on terrestrial and aquatic or the fauna of that area, as the plants in the 4.1 creation of barriers for their greenbelt will provide shelter to them. Hence movement? Provided the the displacement and barrier for movement of details. fauna is not envisaged due to the project. Landscaping and greenbelt planned in the Any direct or indirect impacts project site will have direct positive impact, on 4.2 on the fauna of the area? the fauna of that area, as the plants in the Provided details. greenbelt will provide shelter to them.
V. AIR ENVIRONMENT
Details thereof (with approximate quantities Information/Checklist S. No. /rates, wherever possible) with sources of confirmation information data Will the project increase atmospheric concentration of gases & result in heat islands? As per the layout design of the proposed project, (Give details of background air Sufficient Cross ventilation is being provided to quality levels with predicted 5.1 prevent the formation of heat island. Hence values based on dispersion there will not be increase in atmospheric models taking into account the concentration of gases. increased traffic generation as a result of the proposed construction) What are the impacts on Dust generation is anticipated to occur while generation of dust, smoke, loading & unloading of construction material, odorous fumes or other debris & construction activities and vehicular 5.2 hazardous gases? Give details in movement during construction phase. Dust relation to all the suppression measures will be adopted during meteorological parameters. construction period. During operation phase
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dust generation will result from vehicular movement. Dust generation will be controlled by taking following measures. Covering the scaffolding Clearance of grass or weeds only from activity area Water sprinkling on unpaved surfaces/open areas Washing wheels of vehicles Storage of construction material, excavated soil & debris in covered sheds Regular cleaning of site Development of green belt during operation phase No open land will be left without vegetation cover & roads will be paved. Gaseous emissions like SOx, NOx, CO, PM10 & PM2.5 will be generated due to operation of DG sets. Stack of appropriate height (as per CCB norms) will be provided for dispersion of the expected pollutants. Ambient air quality testing has been done at the project site and the report is attached as Annexure - XI. Post project monitoring of air quality will also be carried out to check the incremental pollution load due to the project. Will the proposal create Sufficient parking space is provided within the shortage of parking space for project area. Internal traffic circulation will be vehicles? Furnish details of the smooth and there will not be any idle running present level of transport of vehicles due to traffic. 5.3 infrastructure and measures Parking provided: proposed for improvement Parking Facility : including the traffic No of cars – 1371 management at the entry & exit No. of two wheelers - 2647 to the project site. 5.4 Provide details of the Internal roads will run all along the site and the
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movement patterns with pedestrian pathways will be provided on the internal roads, bicycle tracks, either sides of the road. pedestrian pathways, footpaths etc, with areas under the category. In construction phase, the noise generated from the construction equipments will be reduced through proper maintenance of all the equipments. Noise control systems such as Will there be significant equipment foundation pads, dampeners, increase in traffic noise & silencers and acoustic enclosures will be used for vibrations? Give details of the individual units. In Operation phase, the major 5.5 sources and the measures source of noise pollution is from vehicular proposed for mitigation of the transportation and generator sets. But Noise above. and vibrations are expected to be minimal due to the distributed traffic pattern and by the development of the green cover all along the internal roads. Hence there is no major impact envisaged. DG sets used in the existing buildings are provided with stacks and acoustic enclosures. What will be the impact of DG The same measures will be adopted in future. sets & other equipment on The DG sets will be operated only for short 5.6 noise levels & vibration in & durations in case of power cuts and the emission ambient air quality around the will be let outside through the stacks with project site? Provided details. adequate height as prescribed by CPCB. Use of low sulphur HSD will reduce the pollutant concentration in the emissions.
VI. AESTHETICS
Details thereof (with approximate quantities Information/Checklist S. No. /rates, wherever possible) with sources of confirmation information data Will the proposed There is no scenic amenity or landscapes 6.1 constructions in any way surrounding the site. results in the obstruction of a
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view, scenic amenity or landscapes? Are these considerations taken into account by the proponents? Will there be any adverse Project site and the immediate vicinity is impacts from new altogether an upcoming developmental area. All constructions on the existing 6.2 the infrastructure facilities and basic amenities structures? What are the are being developed. Therefore the project will considerations taken into not have impacts on the existing structures. account? Whether there are any local considerations of urban form & As the site falls under the CMDA area, the 6.3 urban design influencing the criteria for the building designs are based on the design criteria? They may be CMDA rules and regulations. explicitly spelt out. Are there any anthropological or archaeological sites or artifacts nearby? State if any There are no anthropological or archaeological 6.4 other significant features in the sites or artifacts nearby. vicinity of the proposed site have been considered.
VII. SOCIO-ECONOMIC ASPECTS
Details thereof (with approximate quantities Information/Checklist S. No. /rates, wherever possible) with sources of confirmation information data Will the proposal results in any changes to the demographic There will be no changes in demographic 7.1 structure of local population? structure of local population. Provide the details. Give details of the existing Existing social infrastructure around the 7.2 social infrastructure around the proposed project was Annai Violet IS (CBSE) lies proposed project. at a distance of 0.83 km (WNW), Sethu
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Bhaskara Matriculation Higher Secondary school lies at a distance of 1.01 km (W), Soka Ikeda College lies at a distance of 2.4 km (E), Velammal Vidhyashram lies at a distance of 1.82 km, West, Velammal Engineering College, 3.47 km (NE). There is no sacred site or cultural heritage site in Will the project cause adverse nearby vicinity of proposed project; Further effects on local communities, local communities will be benefitted due to the 7.3 disturbance to sacred sites or proposed development due to direct and indirect other cultural values? What are employment. Hence no adverse impacts are the safeguards proposed? envisaged.
VIII. BUILDING MATERIALS
Details thereof (with approximate quantities Information/Checklist S.No. /rates, wherever possible) with sources of confirmation information data May involve the use of building materials with high-embodied energy. Are the construction materials produced with energy The construction materials used are produced 8.1 efficient processes? (Give with energy efficient processes. details of energy conservation measures in the selection of buildings materials and their energy efficiency) Mitigation Measures during Construction Stage: Air Pollution Transport and handling of Various construction activities related to materials during construction handling of loose material are likely to cause may result in pollution, noise & generation of fugitive dust affecting the air 8.2 public nuisance. What quality of the surrounding area of the project measures are taken to minimize site. To minimize such impact following the impacts? measures shall be taken:
All the loose materials, either stacked or
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transported, will be provided with suitable covering such as tarpaulin, etc. Water sprinkling will be done at the location where dust generation is anticipated. To minimize the occupational health hazard, proper personal protective equipments, i.e. mask, goggles, helmets and safety shoes will be provided to the workers who are engaged in construction activity.
Noise Pollution During the construction stage, expected noise levels will be in the range of 80-85 dB (A) which will decrease with increase in distance as per the Inverse Square Law. Administrative as well as engineering control of noise will be implemented. Isolation of noise generation sources and temporal differentiation of noise generating activities will ensure minimum noise at receiver’s end. To prevent any occupational hazard, ear muffler / plug will be given to the workers working around or operating plant and machinery emitting higher noise levels than the permissible limits. There will be no construction during night hours. Careful planning of machinery operation and scheduling of operations will be done to minimise such impact. Are recycled materials used in Construction debris generated will be recycled 8.3 roads and structures? State to the extent possible in forming roads within extent of savings achieved? the premises. The solid waste will comprise biodegradable Give details of the methods of waste e.g. domestic waste, food waste, collection, segregation & horticultural waste etc. and recyclable waste, 8.4 disposal of the garbage like plastics, paper etc. generated during the operation phases of the project.
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After Expansion: Biodegradable Wastes: 0.56 T/day Non-biodegradable Wastes: 0.37 T/day
Municipal Solid Waste: In the existing building complex, private sweepers are already engaged for handling domestic waste.
Adequate number of collection bins separately for biodegradable and non-biodegradable waste has been provided as per the Municipal Solid Waste (Management and Handling) Rule, 2000. Waste from such bins are collected separately on daily basis and taken to a separate centralized collection facility. Final segregation of solid waste into biodegradable, non-biodegradable, and inert fraction are done in the centralized collection facility. The biodegradable wastes are treated by the in Organic Waste Converter and non bio degradable recyclable waste will be handed over to recyclers. Horticultural wastes: Leaves, grass and vegetative residues shall be collected at the secured location such that it will not hinder daily activity schedule or washed away by the surface run-off causing choking of drains, etc. and will be separately disposed off along with biodegradable waste.
IX. ENERGY CONSERVATION
Details thereof (with approximate quantities Information /Checklist S. No. /rates, wherever possible) with sources of confirmation information data Give details of the power The power sanctioned for the existing building 9.1 requirements, sources of supply, is 36 MVA and it is sourced from TNEB Grid
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backup source etc. What is the with a power back up of 24 DG sets (2500 kVA energy consumption assumed x 7; 2500 kVA x 11; 2250 kVA x 3; 1500 kVA x per square foot of built-up 1; 1250 kVA x 1; 750 kVA x 1). The power areas? How have you tried to requirement for the proposed building is 20 minimize energy consumption? MVA, which will be sourced from the nearby TNEB grid and it is distributed through the transformers within our premises. In Emergencies, DG sets of following capacities will be used. 15 DG sets (2500 kVA x 15) are proposed for the new buildings, which will cater the essential load requirement during power failure. The measures to minimize the energy consumption is detailed in Conceptual plan What type of, and capacity of, Power back up is proposed by using DG sets. 9.2 power back-up you plan to DG sets: 15 DG sets (2500 kVA x 15). provide? What are the characteristics of the glass you plan to use? Provide specifications of its Normal Glass. The thickness of glass is 4-6 mm 9.3 characteristics related to both to keep the U-value of 1.08 W/m2°C. short wave and long wave radiation? What passive solar architectural The use of solar passive measures such as natural features are being used in the cross ventilation, sufficient day-lighting are 9.4 building? Illustrate the provided in existing phase and same will be applications made in the followed in future development. proposed project. Does the layout of streets & buildings maximize the potential for solar energy The layout of streets & buildings will maximize devices? Have you considered 9.5 the potential for solar energy devices. Solar the use of street lighting, powered street lighting will also be provided. emergency lighting and solar hot water systems for use in the building complex? 9.6 Is shading effectively used to The proposed project is the construction of IDC
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reduce cooling/heating loads? and Office building. Suitable adequate What principles have been used sunshades and double lining glass are being to maximize the shading of provided to reduce the heating loads. walls on the East and the West and the Roof? How much energy saving has been effected? Do the structures use energy – efficient space conditioning, lighting and mechanical systems? Provide technical details. Provide details of the Use of CFLs & LED’s to reduce the lighting 9.7 transformers the motor power density. efficiencies, lighting intensity and air-conditioning load assumptions? Are you using CFC and HCFC free chillers? Provide specifications. What are the likely effects of the buildings activity in altering As per the layout design of the proposed project, the micro-climates? Provide a Sufficient Cross ventilation is being provided. 9.8 self-assessment on the likely Hence there will not be any change in impacts of the proposed microclimate due to the proposed project. construction on creation of heat island & inversion effects? The U-values of the roof, external wall and fenestration of the building will meet the requirements as specified in the Energy What are the thermal Conservation Building Code (ECBC). characteristics of the building Resultant Permissible U- envelope? (a) roof: (b) external Value due to Value as per 9.9 walls: and (c) fenestration? Give Component the proposed ECBC details of the materials used the configuratio (W/m2°C) U-values or the R-values of the n
individual components. (W/m2°C) Roof (RCC slab with clay tiles and 0.261 0.25 expanded
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polystyrene insulation of 65 mm thick) Wall (Double brick wall with air gap/ 0.440 0.440 Hollow blocks) Fenestration (Plain glass with sun 3.300 3.127 control film / colored glass) Fire alarm, fire fighting system will be installed inside the building. Portable fire extinguishers What precaution & safety are also installed. Fire protection and safety measures are proposed against 9.10 measures are expected to mitigate fire and fire hazards? Furnish details of explosion hazards. Fire detection and fighting emergency plans. provisions will be available as per specified norms. If you are using glass as wall material provides details and 9.11 specifications including Please refer item no 9.9. emissive and thermal characteristics. What is the rate of air The proposed project will maintain a minimum infiltration into the building? one third of air change per hour. Proper 9.12 Provide details of how you are ventilation will be provided to control the rate mitigating the effects of of air infiltration into the building. infiltration. To what extent the non- conventional energy technologies are utilized in the Solar powered street lighting will be provided. 9.13 overall energy consumption? The layout of streets & buildings will maximize Provide details of the the potential for solar energy devices. renewable energy technologies used.
Conceptual Plan M/s. Tata Communications Ltd
CHAPTER 1: INTRODUCTION
1.1 GENERAL
M/s. Tata Communications Ltd proposes to expand its existing office building in T. S. No. 2/1, Block No.11, Old S. No. 782/2, 784/Part, 785/ Part, 786/Part of Korattur Village, T. S. No. 1/1, Block No. 2, Old S. No. 222/1 Part of Menambedu Village, Ambattur Taluk, Tiruvallur District, Tamil Nadu. The total land area is 84457 sqm. The existing building comprises of VSNL Building (GF + 3 floors + 4th Floor Part), Admin Building, Control Room, Ware House, Micro Tower, Canteen, DG Room & SS Room, Stores Building and
Asianet Building with total Built up area of 8627.59 m2. Later, the IDC Building (Double Stilt + Ground Floor (part) + 7 Floors with total built up area of 36,854 Sq.m was constructed for which Environmental Clearance was obtained in the year 2009. Now, the proponent has decided to construct an additional IDC Building (GF + 4 Floors) and Office Building (Triple Basement + GF + 11 Floors) with a built up area of 65,254.73 Sqm. The total built up area after expansion is 1, 10, 737.19 sqm. In this regard, Environmental clearance is sought for the expansion proposal including the existing buildings.
As per EIA notification, 2006, any new or modernization building and construction project with built-up area more than 20,000 sq m and less than 1, 50, 000 Sqm falls under activity 8(a) and Category B and thus requires obtaining environment clearance from concerned authority prior start of the construction.
1.2 SITE DESCRITPION
The project site is located in 13°7'51.61"N latitude and 80°9'57.28"E longitude. The site is located in T. S. No. 2/1, Block No.11, Old S. No. 782/2, 784/Part, 785/ Part, 786/Part of
Conceptual Plan M/s. Tata Communications Ltd Korattur Village, T. S. No. 1/1, Block No. 2, Old S. No. 222/1 Part of Menambedu Village, Ambattur taluk, Tiruvallur District, Tamil Nadu. The environmental settings of the site are given below in Table 1.1 and the comparison statement is given below in Table 1.2.
Table 1.1 Details of Environmental Settings
S. No. Particulars Details 1. Latitude 13°7'51.61"N 2. Longitude 80°9'57.28"E 3. Total Plot Area 84457 Sqm 4. Nearest Highway SH 205 5. Nearest Railway Station Ambattur (2.42 km, S) 6. Nearest Airport Chennai International airport (14.06 km, S) 7. Nearest Town Ambattur (2.4 km) 8. Nearest City Chennai (12.61 km, SE)
Table1. 2 Comparative Statement
For IDC Existing Building Expansion Total Building 1 constructed activity - S. No. Description After (Obtained before EIA 2004 Proposed Expansion EC) & 2006 construction 1. Land Area (sqm) 84457 No change No change 84457 Built up area 2. 36854 8627.59 65,254.73 110736.32 (sqm) IDC VSNL Building IDC Building Building (GF + 3 floors + (GF + 4th Floor) (Double 4th Floor Part), and Office 3. No. of Blocks Stilt + Admin Building, Building (Triple Ground Control Room, Basement + GF + Floor (part) Ware House, 11 Floors)
Conceptual Plan M/s. Tata Communications Ltd
+ 7 Floors Micro Tower, Canteen, DG Room & SS Room, Stores Building and Asianet Building Fresh Water 4. 73 KLD 427 KLD Requirement 354 KLD Recycled water 5. 66 KLD 116 KLD 157 KLD requirement Total Solid 6. waste generated 0.5 0.1 0.6 1.2 (T/day) 230 KLD 70 KLD and 7. STP capacity 70 KLD 230 KLD Sanctioned 8. 34 MVA 2 MVA 20 MVA 56 MVA Power 2500KVA* 18; 2250 4 nos. of KVA * 21; 4250 kVA 1500 KVA * 1500 KVA * 1 1; 9. DG sets As per site 1250 KVA * 1 2500 kVA x 15 1250 KVA * 2500 KVA * 750 KVA * 1 1; 18; 2250 750 KVA * KVA * 3) 1; 2500 kVA x 15 Rs. 150 10. Project cost Rs. 141.17 Crores Crores 11. Green belt area 8584 7004 15588
1.2.1 Topography of the site: The site abuts the SH 205.
Conceptual Plan M/s. Tata Communications Ltd Sensitive areas around site: Puzhal Lake (0.343 Km, N), Ambattur Lake (3.21 Km, SW), Korattur Lake (14.80 Km, NE), Cooum River (6.28 Km, SE), Adyar River (11.54 Km, SE). 1.2.2 Site connectivity:
The project site is well connected by road. The project site is near SH 205.
1.3 PROJECT COMPONENTS
The proposal involves construction of additional building with a built up area of 65281.66 Sqm. The proposed building consists of IDC Building (GF + 4 Floors) and Office Building (Triple Basement + GF + 11 Floors). Detailed area break up is given in below Table 2.
Table 1.3: Land Use Break up Details Details Area in (Sqm) a) Total Land Area (After expansion) 84457 b) Total Ground Coverage Area of Buildings (17.15%) 14490.28 c) Roads and Pavements Area (25.02%) 21136.04 d) Surface or open Parking Area (25.9%) 21902.1 e) STP, Solid Waste Disposal and Other Utilities Area (3.38%) 2856.71 f) Greenbelt development Area (18.5%) 15588.9 g) OSR Area (10%) 8483
Total Built up Area and Details on Housing Units:
Built up area is calculated as per the latest Circular of MoEF, Dated: 2" April 2012. Built- up area is defined as ''The built-up or covered area on all the floors put together including basement(s) and other service areas, which are proposed in the building / construction project" as per the latest Circular of MoEF, Dated: 2" April 2012. Detailed built-up area calculations are given in Table 3 below.
Conceptual Plan M/s. Tata Communications Ltd Table 4: Built-up Area Table 4.1 Existing Built-up Area Summary Parking Description of the FSI area Non FSI area Total Floor sqm area sqm sqm Area as per the earlier approved file No. 38166.90 3591.16 3023.53 44781.59 C3/17941/2009 (Note file pg no.16) Cafeteria at 4th floor (Existing 700.87 -- -- 700.87 VSNL Building)
Table 4.2 Block 1 (Proposed – Office Building) Parking Description of the FSI area Non FSI area Total Floor sqm area sqm sqm 3rd basement -- 153.37 4823.23 4976.6 2nd basement -- 153.37 4823.23 4976.6 1st basement -- 153.37 4823.23 4976.6 Ground floor 424.84 172.33 1674.37 585.4 1st floor 2108.00 74.70 -- 585.4 2nd floor 2108.00 74.70 -- 585.4 3rd floor 2108.00 74.70 -- 585.4 4th floor 2108.00 74.70 -- 585.4 5th floor 2108.00 74.70 -- 585.4 6th floor 1944.56 225.57 -- 585.4 7th floor 2108.00 74.70 -- 585.4 8th floor 2108.00 74.70 -- 585.4 9th floor 1944.56 225.57 -- 585.4 10th floor 2108.00 74.70 -- 121.8 11th floor 2108.00 74.70 -- Total 23285.96 1755.88 16144.06 41185.67
Conceptual Plan M/s. Tata Communications Ltd Table 3.3 Block 2 (Proposed – IDC Building) Description of the FSI area Non FSI Parking area Total Floor sqm area sqm sqm Ground floor 4917.96 119.95 -- 585.4 1st floor 4676.61 86.33 -- 585.4 2nd floor 4640.08 115.99 -- 585.4 3rd floor 4640.08 115.99 -- 585.4 4th floor 4640.08 115.99 -- 585.4 Total 23514.81 554.25 -- 24069.06
Table 3.5 Built up area Summary
Description of the FSI area Non FSI Parking area Total Block sqm area sqm sqm Existing Building Area as per the earlier approved file 38166.90 3591.16 3023.53 44781.59 No. C3/17941/2009 (Note file pg no.16) Cafeteria at 4th floor (Existing VSNL 700.87 700.87
Building) Proposed Building Block 1 23285.96 1755.88 16144.06 41185.67 Block 2 23514.81 554.25 -- 24069.06 Total built up area 85668.54 5901.29 19167.59 110737.2
1.4 VEHICLE PARKING FACILITIES Parking will be provided as per the building bye laws of CMDA. Details of parking required and to be provided is given below in Table 4. Table 4: Parking Provided (After Expansion) No. of Car No of two Details parking wheeler provided parks No. of Parking in 1st basement 236 --
No. of Parking in 2nd basement 236 --
Conceptual Plan M/s. Tata Communications Ltd
No. of Parking in 3rd basement 236 --
No. of Parking in surface parking 555 2647
No. of parking in stilt floor 108 --
Total number of Car Parks provided 1371 2647
1.5 POWER REQUIREMENT
The power sanctioned for existing building is about 50 MW. The power requirement for the proposed building is 35 MW. The power will be sourced from the nearby TNEB grid. 24 DG sets (2500 kVA x 7; 2500 kVA x 11; 2250 kVA x 3; 1500 kVA x 1; 1250 kVA x 1; 750 kVA x 1) are already installed in the site, which will cater the essential load requirement during power failure for the existing buildings. 15 DG sets (2500 kVA x 15) are proposed for the new buildings, which will cater the essential load requirement during power failure.
1.6 BASELINE ENVIRONMENTAL STATUS
Baseline studies are carried out to provide a detailed description of the existing ecosystem, landscape, infrastructure, cultural heritage and urban environment. A baseline study describes the initial state of the environment within the selected boundaries of the study area. The baseline data has been generated and secondary data collected from various Government and Semi-Government organizations. The details about the existing environmental values are projected based on the volume of the assessment accomplished during the period. The various environmental attributes were divided into primary and secondary studies. Primary attributes such as air environment, water, soil, noise & biological environment were being assessed by conducting field studies, on-site monitoring. The baseline studies started with site visits and survey in the study area for fixing the monitoring locations for the primary data generation. The baseline environmental data for ambient Air, Noise, Soil and Ground water is enclosed in Annexure. The brief on the study of bio-diversity is summarized below.
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1.6.3 Biodiversity study
Methodology The ecological status of the study area has been assessed based on the following methodology: Primary field surveys to establish primary baseline of the study area
Compilation of information available in published literatures and as obtained from Forest survey of India, Botanical Survey of India and Zoological Survey of India.
The flora and fauna studies were carried out within 1 km radius around the proposed construction site. Flora The Study of flora involved intensive sample survey of vegetation in the project site and other locations applying standard methods. To examine the trees and shrubs, quadrants of 25 x 25 m and for herbs 2 x 2 m were laid. In each of the larger quadrants (i) Species (ii) their number, and (iii) Girth at Breast Height (GBH), were measured. (Chaturvedi and Khanna, 1982). Abundance, relative abundance, density and relative density of each species diversity and evenness for each of the Zones were calculated using the numerical data (Ludwig and Reynolds 1988, Lande 1996, Smith and Wilson 1996). The standard statistical analysis, the normal frequency diagram and distribution of plants in the study area were analyzed using the procedures of Raunkiaer, 1934. The analysis carried out as per Raunkiaer’s law of frequency classes provides the information on the Heterogeneity and Homogeneity of plants and its pattern of distribution in the study area. The species of vegetation found in each station were identified and listed according to their families, both in dicotyledons and monocotyledons of the plant kingdom. The plant species were classified as per the classifications of “Bentham and Hooker” and identified by using Gambles book on “Flora of Madras Presidency” and Mathew’s book on “Flora of the Tamil Nadu Carnatic”. Fauna Both direct and indirect observation methods were used to survey the fauna. Visual encounter (search) method was employed to record vertebrate species. Additionally survey of relevant literature was also done to consolidate the list of vertebrate fauna distributed in the area (Smith 1933-43, Ali and Ripley 1983, Daniel
Conceptual Plan M/s. Tata Communications Ltd 1983, Prater 1993, Murthy and Chandrasekhar 1988). Since birds may be considered as indicators for monitoring and understanding human impacts on ecological systems (Lawton 1996) attempt was made to gather quantitative data on the group by. Point Survey Method: Observations were made in each site for 15 minutes duration. Road Side Counts: The observer traveled by motor vehicles from site to site, all sightings were recorded (this was done both in the day and night time). An index of abundance of each species was also established. Pellet and Track Counts: All possible animal tracks and pellets were identified and recorded (South Wood, 1978). Based on the Wildlife Protection Act, 1972 (WPA 1972, Anonymous. 1991, Upadhyay 1995, Chaturvedi and Chaturvedi 1996) species were short-listed as Schedule II or I and considered herein as endangered species. Species listed in Ghosh (1994) are considered as Indian Red List species. Pellet and Track counts method was adopted for this development project and the assessment results are discussed in Chapter-3.
Baseline Data:
Ambient air quality standard has been monitored for the parameters as per 2009 NAAQ standard, sulphur dioxide concentration is 10.8 µg/m3 , oxides of nitrogen is 18.5 µg/m3, PM10 is 40.5 µg/m3 and PM 2.5 is 17.7 µg/m3 and other parameters such as Co, lead, Ozone, Ammonia, Benzene, Benzo (a) pyrene , Arsenic, Nickel were below detectable limit. The Baseline monitoring reports are enclosed as Annexure.
Discussion on Onsite Environment: Air Environment: Existing building has 24 DG sets. Stack monitoring has been done for 2 operational stacks (1250 KVA & 2250 KVA). The values are as follows:
S. No Parameters Results Results CPCB Limits (1250 KVA) (2250 KVA)
1 Particulate matter 37 44 150
2 SO2 21 38 -
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3 NOx 186 217 1100
4 CO BQL (LOQ: 0.01) BQL (LOQ: 0.01) 150
From the results, it is found that the values of the stack emission are less than the standards. Hence there is no much impact to the air environment due to the existing buildings. Noise Environment: Noise monitoring has been done at various locations in the existing facility. Noise results are tabulated below:
Day Time S. No Location Noise level in dB (A) 1 STP 54.3 2 WTP 53.8 3 Power Room 54.8 4 Parking 53.3 5 Admin office 52.5 6 DG - Yard 53.5 7 Security gate 54.8 Medic Service 8 53.9 operation Center 9 Dining Area 52.3 In between STP and DG 10 53.2 Yard
The values were well within the limits prescribed by CPCB. Hence noise environment is not affected to a greater extent due to the existing buildings.
Conceptual Plan M/s. Tata Communications Ltd
Water Environment: The treated sewage samples were collected from the existing STP and also the samples were collected from WTP outlet. The values were tabulated below: Parameters Treated sewage Tolerance Limits as per TNPCB standards
pH 6.97 5.5 - 9
TSS BQL (LOQ: 2) mg/L 30
BOD BQL (LOQ: 2) mg/L 20
COD 48 mg/L -
The values were below the limits prescribed by TNPCB. The treated waste water was utilized within the site for Gardening Purpose. As the entire wastewater is utilized in the site hence there is no significant impact due to the project in the surrounding environment.
From this, we can conclude that there is no significant impact to the environment due to the existing development as the values were well within the standards. These were maintained by providing appropriate mitigation measures such as the possible impacts from air are controlled due to the provision of adequate stack height. To avoid the pollution of the environment due to the generation of wastewater, STP is provided so the wastewater is treated and reused within the site. The OWC in the site will treat the biodegradable waste generated thus converting it to manure, which is used in the green area.
1.7 ENVIRONMENTAL COMPONENTS
The baseline environmental studies helped in assessing the existing environmental conditions of the study area and identifying the critical environmental attributes. This will facilitate the comparison of the resultant environmental conditions in the post study scenario with the pre- study conditions and will help in checking the environmental pollution.
Conceptual Plan M/s. Tata Communications Ltd
1.8 WATER REQUIREMENT
Exiting: The total fresh water requirement during operation is 354 KLD. Source of water is CMWSSB. The wastewater generation from the project is about 69 KLD, which will be treated in existing sewage treatment plant of 70 KLD and will be recycled for flushing, and gardening. The water commitment letter from CMWSSB is enclosed as Annexure.
Proposed: The total fresh water requirement for the proposed building is 73 KLD. Source of water is CMWSSB. The wastewater generation from the project is about 127 KLD, which will be treated in existing sewage treatment plant of 230 KLD and will be recycled for flushing, OSR and gardening.
Table 5: Occupancy Load Calculation
S. No. Description Occupancy load (Nos.) Existing EC Total population for IDC Building 1 (EC 1. 760 obtained) Existing old buildings 2. VSNL Building & Admin Block 900 Proposed buildings 3. Office Building 2676 4. IDC building 200 Visitors and Maintenance staff (10% of the 5. 454 total population) Total Population 4990 (1826 + 3164)
Conceptual Plan M/s. Tata Communications Ltd
Table 6: Water Requirement Calculation – Existing EC
Flushing Total Water Fresh water Project Occupancy water Requirement Requirement Components load Requirement (lpd) (lpd) (lpd) Population 74700 41500 33200 (Existing as per 1660 EC) + Left out (760+900) (45 lpcd) (25 lpcd) (20 lpcd) Buildings Visitors and 166 (10% of 2490 the 830 1660 Maintenance Staff population) (15 lpcd) (5 lpcd) (10 lpcd) HVAC (4000 TR) 312000 312000 -- Gardening area (8584 Sqm) 30044 -- 30044 Total water requirement 419234 354330 64904
Water Balance:
Total Fresh Water Requirement (354 KLD) 69 KLD STP Domestic 34 KLD 70 KLD 42 KLD
66 KLD HVAC 35 KLD 312 KLD Flushing
35 KLD
Gardening 31 KLD 31 KLD
Conceptual Plan M/s. Tata Communications Ltd Water Requirement Calculation – Proposed
Total Fresh Water water Flushing water Occupancy Project Components Require Requirem Requirement load ment ent (lpd) (lpd) (lpd) IDC building and 129420 71900 57520 2876 Office building (45 lpcd) (25 lpcd) (20 lpcd) Visitors and 4320 1440 2880 Maintenance staff 288 (10% of the total (15 lpcd) (5 lpcd) (10 lpcd) population) Gardening area (7004.9 Sqm at 3.5 litres/ Sqm) 24517.15 OSR area (8483 Sqm at 3.5 Litres/Sqm) 29690.5 Total water 187947.65 73340 114607.65 requirement
Water Requirement Summary
S. No. Details Quantity 1. Total Water Requirement 189 KLD
2. Domestic water requirement for domestic purposes 73 KLD
3. Treated water requirement for Flushing purposes 61 KLD
4. Treated water requirement for Gardening purposes 25 KLD
5. Treated water requirement for OSR maintenance purposes30 KLD
Conceptual Plan M/s. Tata Communications Ltd Water balance - proposed:
Total Fresh Water
Requirement
(73 KLD)
66 KLD STP Domestic 127 KLD 230 KLD 73 KLD (90%) 121 KLD 61 KLD (100 %)
Flushing 61 KLD 61 KLD
Gardening 25 KLD
25 KLD
OSR 30 KLD 30 KLD
Water Requirement Calculation – after Expansion
Total Water Fresh water Flushing water Occupancy Requireme Project Components Requirement Requirement load nt (lpd) (lpd) (lpd) 1660 74700 41500 33200 Population (Existing) (760+900) (45 lpcd) (25 lpcd) (20 lpcd) VSNL Building & Admin 129420 71900 57520 Block, IDC building and 2876 (45 lpcd) (25 lpcd) (20 lpcd) Office building Visitors and Maintenance 6810 2270 4540 staff (10% of the total454 (15 lpcd) (5 lpcd) (10 lpcd) population) HVAC 4000 312000 312000 --- Gardening area 15588 (15588 Sqm at 3.5 litres/ Sqm) 54558
Conceptual Plan M/s. Tata Communications Ltd
OSR area 8483 (8483 Sqm at 3.5 Litres/Sqm) 29690.5 Total water requirement 607178.5 427670 179508.5
Water Requirement Summary
S. No. Details Quantity 1. Total Water Requirement 607 KLD
2. Domestic water requirement for domestic purposes 115 KLD
3. Treated water requirement for HVAC purposes 312 KLD
4. Treated water requirement for Flushing purposes 95 KLD
5. Treated water requirement for Gardening purposes 55 KLD
6. Treated water requirement for OSR maintenance purposes30 KLD
WATER BALANCE:
Total Fresh Water Requirement (427 KLD) STP 199 KLD Domestic 230 KLD & 70 115 KLD KLD 189 KLD
HVAC 312 KLD 95 KLD Flushing 95 KLD
55 KLD Gardening 55 KLD 30 KLD OSR 30 KLD
Conceptual Plan M/s. Tata Communications Ltd 1.9 SOLID WASTE GENERATION
The solid waste from the existing building after expansion will comprise of compostable wastes like domestic food waste, horticultural waste and recyclable waste like plastics, paper etc. The specifications of the OWC in the existing building are given in the Annexure. As per the manual on municipal solid waste prescribed by Central Public Health and Environmental Engineering Organization (CPHEEO), the quantity of solid waste generated varies between 0.2-0.6 kg / capita / day. Quantity of solid waste generated from the office building is given below in Table 7
Table 7: Quantity of solid waste generated from the Office building (after expansion)
Total solid Project Occupancy Per Capita Waste S. No Components load generation generation Kg/day Existing EC Population 1 (Existing as per 700 0.2 140 EC) Existing 2 Buildings (Left 900 0.2 180 out Buildings) Proposed 3 2876 0.2 575 Buildings Visitors and 4 Maintenance 454 0.1 45 staffs Total Waste Generation in Kg/day (After Expansion) 940 5 STP Sludge - - 18
Source: per capita generation from Central Public Health and Environmental Engineering Organization (CPHEEO),
Conceptual Plan M/s. Tata Communications Ltd Table 8: Waste Composition
Quantity S. No Description Mode of treatment / disposal (Tons/day) Treated in organic waste convertor Biodegradable Waste within the project site. Manure 1 (@60% of waste 0.56 generated will be used for landscaping generated) purpose within project site. Non-Biodegradable 2 waste (@40% of waste 0.37 Sent to recyclers generated Used as a Manure for greenbelt 4 STP Sludge 18 kg/day development
The waste management involves segregation of the waste into Biodegradable and Non biodegradable at the source. The biodegradable waste is processed through the Organic waste convertor in the site and the processed waste is being used as manure for the existing green belt in the site. The non biodegradable waste is sent to authorize recyclers. Different colored bins are used for segregation of wastes.
E - Waste Generation and Management:
Apart from the municipal waste, E-waste comprising of rejected CFL, bulbs, laptops, , computers etc is generated. This waste was insignificant in initial stage. The existing e- waste is disposed through the method of auctioning and the disposal of e-waste to authorized dealers who are H1 in the auction. The detailed procedure, quantity disposed year wise is enclosed in Annexure. The e-waste generation for the existing facility is 3.2 T/Annum and the same for the proposed expansion will be 3T/ Annum. Total generation of e-waste will be 6.2 T/Annum. The e-waste generated in the proposal will also be disposed through auction.
Conceptual Plan M/s. Tata Communications Ltd CHAPTER 2: ENVIRONMENTAL IMPACT ASSESSEMNT
2.1 INTRODUCTION
This chapter presents the assessment of various impacts due to the proposed construction activity in the study area. Generally, the environmental impacts can be categorized as either primary or secondary. Primary impacts are those, which are attributed directly by the project and secondary impacts are those, which are indirectly induced and typically include the changed patterns of social and economic activities by the proposed project. The Proposed construction project would create impact on the environment in two distinct phases:
Impacts during the construction phase Impacts during the operation phase
The construction and operational phase of the proposed construction comprises of various activities each of which will have impact on some or other environmental parameters. Various impacts during the construction or operational phase and the environmental parameters have been studied to estimate the impacts on environment. The identification and details on impact of the project activity on each of the above environmental attributes are discussed below.
2.2 IDENTIFICATION OF IMPACTS
The identification of impacts is important as it leads to the other elements such as quantification and evaluation of impacts. Although a number of non-projects related impacts have been identified while describing the existing (baseline) environmental status, it is necessary at this stage to identify the types of the potential impacts which might be caused by the proposed development. Many techniques are available for identification of impacts. In case of this project, the "Matrix Method" was adopted, which involves an understanding of the cause-condition-effect relationship between an activity and environmental parameters. It is very useful as gross screening tool for
Conceptual Plan M/s. Tata Communications Ltd impact identification method. This method has been basically advantageous in recognizing the series of impacts that could follow from the proposed activities.
The idea was to account for the project activity and identify the types of impacts that could initially occur. This process was repeated until all possible types of impacts were identified. With this method the potential impact of the proposed project has been identified.
Table 9: Over view of potential impacts due to the proposed expansion of Office Building
Project activities Quality Quantity Air quality Air Vegetation Noise Level Noise Soil Quality Soil Traffic Level Traffic Ground Water Water Ground Water Ground Socio Economic Socio Soil Stability/ Erosion Stability/ Soil Construction Phase Site Clearance & ST, ST, ST, - ST, +ve Leveling Site excavation ST, ST, ST, ST, +ve Foundation ST, ST, +ve (Pile Foundation) Material Storage & ST, ST, Handling Generation and dispo ST, ST, of construction waste Movement of VehiclesST, ST, ST, -ve ST, Labor’s Camp ST, Operation Phase Occupancy LT, LT, -ve LT, +ve Operation of DG Sets -ve -ve -ve Sewage Generation & LT, LT, LT, Discharge Rainwater Harvesting LT, +ve LT, +ve Solid waste Generation LT,
Conceptual Plan M/s. Tata Communications Ltd
Gardening & LT, +veLT, +ve LT, +veLT, +ve LT, +veLT, +ve Landscaping
Note: ST - Short Term Impact, LT - Long Term Impact, -ve - Negative Impact, +ve – Positive Impact
2.3 IMPACT EVALUATION
Impact evaluation assesses the expected changes in the environment due to the proposed construction. It is the tool for identifying the magnitude of impact and forms basis for the development of Environmental Management Plan. Weightage for each impact is given below. Evaluation of impacts considering both positive and negative effects on air, noise, land, water and socioeconomic environment during the construction and operation phase of the project is given in Table 10 and 11 respectively.
TABLE 10: EVALUATION OF CONSTRUCTION PHASE IMPACT
Environmental Project Impact Type Weightage
Parameter Activities itigation Significant Non Significant Direct Indirect Term Short Term Long Unavoidable Irreversible M Required CONSTRUCTION PHASE Site Clearance & Negative √ √ √ √ √ -4 Leveling Site excavationNegative √ √ √ √ √ -4 Foundation (Shallow Negative √ √ √ √ 0 AIR Foundation) ENVIRONMEN Material Storage T Negative √ √ √ √ √ -4 & Handling Generation and disposal of Negative √ √ √ -4 construction waste
Conceptual Plan M/s. Tata Communications Ltd
Vehicular Negative √ √ √ -4 Movement Labor’s CampNo Impact - Public Health & No Impact - Safety Economic No Impact - Activity
Site Clearance & Negative √ √ √ 0 Leveling Site excavationNegati ve √ √ √ -4 Foundation (Shallow Negative √ √ √ √ -4 Foundation) Material Storage Negative √ √ -1 & Handling Generation and NOISE disposal of ENVIRONMEN No Impact - construction T waste Vehicular Negative √ √ √ -1 Movement Labour’s CampNo Impact - Public Health & No Impact - Safety
Economic No Impact - Activity
LAND Site Clearance & No Impact - ENVIRONMENLeveling T Site excavationNo Impact -
Conceptual Plan M/s. Tata Communications Ltd
Foundation (Shallow Negative √ √ -1 Foundation) Material Storage Negative √ √ √ √ -4 & Handling Generation and disposal of Negative √ √ -4 construction waste Vehicular Negative √ √ √ -1 Movement Labour’s CampNo Impact - Public Health & No Impact - Safety Economic No Impact - Activity
Site Clearance & Negative √ √ √ -2 Leveling Site excavationNo Impact - Foundation (Shallow No Impact - Foundation) WATER Material Storage Negative √ √ √ √ -4 ENVIRONMEN& Handling T Generation and disposal of Negative √ √ √ √ -4 construction waste Vehicular Negative √ √ 0 Movement Labour’s CampNegative √ √ √ √ -4
Conceptual Plan M/s. Tata Communications Ltd
Public Health & No Impact - Safety Economic No Impact - Activity
Site Clearance & Negative √ √ √ √ -2 Leveling Site excavationNegative √ √ √ √ -2 Foundation (Shallow Negative √ √ √ √ -2 Foundation) Material Storage Negative √ √ √ 0 & Handling SOCIO Generation and ECONOMIC disposal of ENVIRONMEN Negative √ √ √ √ -2 construction T waste Vehicular Negative √ √ √ √ -2 Movement Labour’s CampNegative √ √ √ √ -2 Public Health & Positive √ √ √ 6 Safety Economic Positive √ √ √ 6 Activity
TABLE 11: EVALUATION OF OPERATION PHASE IMPACT
Environmental Weightag Project ActivitiesImpact Type Parameter e Significant Significant Non Direct Indirect Term Short Term Long Unavoidable Irreversible Mitigation Required OPERATION PHASE AIR Occupancy No Impact - ENVIRONMEOperation of DG Negative √ √ √ √ -8 NT Sets
Conceptual Plan M/s. Tata Communications Ltd
Sewage Generation Negative & √ √ 0 Discharge Rainwater No Impact - Harvesting Solid waste Negative √ √ √ -6 Generation Gardening & Positive √ √ √ 10 Landscaping
Occupancy No Impact - Operation of DG Negative √ √ √ √ -8 Sets Sewage Generation No & Impact -- NOISE Discharge ENVIRONME Rainwater NT No Impact - Harvesting Solid waste No Impact - Generation Gardening & Positive √ √ √ 10 Landscaping
Occupancy Negative √ √ 0 Operation of DG Negative √ √ √ 0 Sets Sewage LAND Generation Negative & √ √ √ √ -8 ENVIRONME Discharge NT Rainwater Positive √ √ √ 8 Harvesting Solid waste Negative √ √ √ √ -8 Generation
Conceptual Plan M/s. Tata Communications Ltd
Gardening & Positive √ √ √ 10 Landscaping
Occupancy Negative √ √ √ √ -8 Operation of DG Negative √ √ √ √ -6 Sets Sewage Generation Negative & √ √ √ √ √ -8 WATER Discharge ENVIRONME Rainwater NT Positive √ √ √ 10 Harvesting Solid waste Negative √ √ 0 Generation Gardening & Positive √ √ √ 10 Landscaping
Occupancy Positive √ √ √ 10 Operation of DG Negative √ √ √ √ -6 Sets Sewage SOCIO Generation Negative & √ √ √ √ -6 ECONOMICDischarge ENVIRONMERainwater Positive √ √ √ 8 NT Harvesting Solid waste Negative √ √ √ -6 Generation Gardening & Positive √ √ √ 8 Landscaping
Conceptual Plan M/s. Tata Communications Ltd
2.4 IMPACT ON AIR ENVIRONMENT
2.4.1 Construction Phase
Impacts of construction activities on air quality are cause for concern mainly in the dry months due to dust particles. The main sources of emission during the construction period are the movement of equipment at site and dust emitted during the leveling, grading, earthworks, and other construction related activities. The dust emitted during the above mentioned activities depend upon the type of soil being excavated. However, the impact will be for short duration and confined locally to the construction site. The composition of dust in this kind of operation is, however, mostly inorganic and non- toxic in nature.
The impact of such activities would be temporary and restricted to the construction phase. The impact will be confined within the project boundary and is expected to be negligible outside the plant boundaries. Proper upkeep and maintenance of vehicles, sprinkling of water on roads and construction site are some of the measures that would greatly reduce the impacts during the construction phase. Thus, it is inferred that no significant impacts are expected on the overall ambient air quality due to the proposed construction activities.
Transportation and Storage of Construction Materials
Transportation of heavy machinery and building materials implies heavy traffic on the roads leading to the site with possible negative impacts to the surrounding area (dust, spillage, emissions and noise). Transportation of construction materials as well as improper storage of building materials, especially gravel, sand and cement in the construction site will lead to inadvertent dispersal of materials during heavy rain or high wind during dry periods. Measures will be adopted for proper handling of construction materials to reduce the negative impact.
Conceptual Plan M/s. Tata Communications Ltd 2.4.2 Operation Phase
Ambient air quality at the project site and its surroundings was monitored and values of the pollutants RPM, PM2.5, NOx and SO2 are within the limits of NAAQS, 2009 prescribed by the central pollution control board. The test reports are enclosed as Annexure.
There is no major pollutant envisaged from the proposed development. It is likely that the air quality may be affected slightly due to the emissions from the vehicular movement. The existing DG sets will be used as power backup for the proposed building. The emissions from the existing DG sets were within the limits. The DG sets are provided with stack of adequate height to meet the stipulations of CPCB. Hence there shall not be any adverse impact on the air environment around the proposed Building.
2.5 IMPACT ON AMBIENT NOISE
2.5.1 Construction Phase
During the construction noise levels will increase due to use of machinery and heavy vehicles in the project area. In terms of noise emission; excavation and construction work can be divided into two phases, namely (1) Earthworks and (2) building works. Loading and unloading of construction materials, fabrication, handling of equipment and material, operation of power shovels etc. will be the major source of noise during the construction phase. Various construction activities will cause short-term noise impact in the immediate vicinity of the project site.
The areas affected are those close to the site and hence the impacts are localized. At the peak of the construction, marginal increase in noise levels is expected to occur. The peak noise levels from continuous construction activity may be as high as 80 - 90 dB (A). The noise control measures during construction phase shall restrict the noise levels to lower levels. Hence the overall impact on the ambient noise levels will not be significant.
Conceptual Plan M/s. Tata Communications Ltd
2.5.2 Operation Phase
There will not be any major impact from noise. This is because no equipment or other infrastructure facility in the project generates noise more than 50-60 dB (A). However, the only noise generation source is the DG set. DG will be provided with acoustic enclosures so that the noise levels are within the CPCB standards. Further, all the DG sets are in compliance with the CPCB norms for noise generation. Also, the DG will be located inside the utility block, which is an RCC structure. Thus, any generation of noise due to the DG will be controlled. Apart from this honking is prohibited at the site and speed limits are restricted within the site. This significantly helps in controlling noise levels at the site. Further the green belt provided within the site acts as noise barrier between inside and outside environment. This acts as buffer and protects the site from high noise levels outside the site.
Traffic Noise
Traffic will increase during both construction and operation phase of the project. Vehicles associated with construction would generate intermittent noise throughout the vicinity of the proposed action. In the operation phase, vehicular parking is being provided in the basement, ground floor and first floor of the building where noise levels are expected to increase substantially during the peak hours due to starting, idling and roaring of vehicles.
2.6 IMPACT ON LAND ENVIRONMENT
No blasting will be done during construction phase of the project. The rehabilitation and resettlement issues are not involved in the project. Furthermore the existing environmental conditions of the project site reveal that the land is not contaminated or polluted.
Top soil will be excavated up to 15 cm from the project site. It will be stored in covered area during construction phase and will be used for landscaping in operation phase within project site. The upper/top level of soil will be affected during construction phase
Conceptual Plan M/s. Tata Communications Ltd but this will be limited to a portion of the project area. Also the impact due to exploitation of ground water is insignificant in the site due to the sourcing of water from other sources during the operation phases.
2.7 IMPACT ON WATER RESOURCES
2.7.1 Construction Phase
The required water quantity for construction will be utilized from the available resource in the project area. Impact on water quality during construction phase may be due to non-point discharges of sewage generated from the construction work force, stationed at the site. Construction activities for the proposed development can have minor impact on hydrology and ground water quality of the area if the construction waste leaches into ground.
Potential sources of impacts on the hydrology and ground water quality during the construction phase would be soil runoff, improper disposal of construction debris, spillage of oil and grease from the vehicles and wastewater stream generated from on site activities such as vehicles washing, workshop etc. Precautions and preventive measure will be taken at the site during construction to avoid any ground and surface water contamination hence the overall impact on water environment during construction phase due to proposed project is likely to be insignificant.
2.7.2 Operation Phase
The total quantity of wastewater generation after expansion is likely to be 199 KLD. No impact from wastewater is envisaged, because the sewage generated will be treated and recycled within the project components for flushing, gardening, and OSR. Therefore, surface and subsurface contamination due to treated wastewater will not be envisaged.
Conceptual Plan M/s. Tata Communications Ltd
2.8 IMPACTS DUE TO WASTE DISPOSAL
2.8.1 Stacking and Disposal of Construction Materials
Stacking of construction materials will be confined to the project site only and also temporary sheds will be provided to store the materials, hence no impacts on surrounding area will be envisaged. Solid wastes generated due to proposed project during construction phase include sand, gravel, stone, bricks, plastic, paper, wood, metal and glass. Recyclables will be sent to authorize recyclers. Hence there is no significant impact due to waste disposal during the construction phase.
2.8.2 Operation Phase
The solid waste generated from the project is collected daily and moved to a common temporary storage facility by the staff dedicated for waste collection. The collected Solid waste is processed through the existing Organic waste converter and the same will be followed for the proposed building as well.
2.9 IMPACTS ON ECOLOGICAL RESOURCES
2.9.1 Construction Phase
During construction period, land clearing & leveling activities involved clearing of existing vegetation which would have significant impact on the ecology of the study area. The list of tree species to be removed is given in Annexure. The generation of fugitive dust due to vehicular movement would have negative impact on the surrounding vegetations due to deposition of dust on pubescent leaves which may lead to temporary reduction of photosynthesis. This would be confined to the initial periods of the Construction phase and would be minimized through water sprinkling, paving roads and phase wise judicious construction management plan.
Conceptual Plan M/s. Tata Communications Ltd
2.9.2 Operation Phase
No wastewater will be discharge into the surface water stream. Hence, there will not be any impact on the aquatic ecology. Also the proposed project is to be located in an earmarked mixed residential zone, which does not have any natural park or sanctuary or forest area in the immediate vicinity. The flora and fauna pattern in the area will not be disturbed due to the project. Hence the overall impact on ecological resources due to proposed project is likely to be insignificant. Moreover the entire project area would be landscaped with variety of plants. Greenbelt development would enhance micro climatic condition and habitat of avifauna.
2.10 IMPACT ON TRAFFIC LEVELS
2.10.1 Construction Phase
The movement of construction equipments will be mostly within the site during the project. Vehicles bringing in raw materials like sand, cement and aggregate materials will be moving into the site from outside, which will be strictly controlled and monitored as per the traffic rules, to avoid any sort of disturbance to the traffic and safety of the surrounding areas. Hence the impact due to the vehicular movement during the construction phase would be minor or insignificant.
2.10.2 Operation Phase
Based on the vehicular density observed during the traffic survey conducted on the main roads around the proposed site, the existing infrastructure is capable of taking up additional traffic loads. Also the project is to be executed phase wise; the increase in traffic will be easily handled by the existing as well as the future improvements in the transportation infrastructure. Hence there will not be any impact on the traffic pattern and density.
Conceptual Plan M/s. Tata Communications Ltd
2.11 IMPACTS ON SOCIO ECONOMIC ENVIRONMENT
The required land for the development is owned by M/s. Tata Communications Ltd. The proposed expansion of office building will be open to members of all communities and castes. The above measure will encourage mixing of different caste people for their respective festivals and occasions. This will improve the social welfare and brotherhood among the various communities and castes.
Also the state of the art facilities proposed in the development is planned to cater the needs of the occupants which would be able to provide healthy working atmosphere. Hence it is obvious to assume that the activities of the proposed development will produce some positive impacts in the socio-economic status of the area.
2.11.1 Public Health and Safety
As the project is only a construction of office building and all the construction activities are confined to the project site, no health related impact would be envisaged within the project area. The people engaged in the construction activities will be directly exposed to dust generation, which is likely to cause health related impact. Appropriate mitigation measures like spraying of water will be adopted to minimize dust emission in the construction site. Laborers will be provided with suitable Personal Protective Equipment (PPE) as required under the health and safety norms. Regular health checkups will be organized.
2.11.2 Positive Impact
The project will facilitate maximum participation of the local work force for construction process; this will benefit the local economy, improvement in economic activity and enhancement in earning opportunities for the local population. The operation of the project and other allied facilities will improve the employment opportunities. The project will provide direct and indirect employment. About 50 – 100 persons will be employed during the operation stage for the purpose of day-to-day maintenance works. The employment will have positive impact on the local economy
Conceptual Plan M/s. Tata Communications Ltd thereby increasing the quality of life. The rainwater recharge facility will augment the ground water level in the project area. The proposed project will also improve the aesthetics of the area due to the development of modern buildings.
Conceptual Plan M/s. Tata Communications Ltd CHAPTER 3: ENVIRONMENTAL MANAGEMENT PLAN
3.1 GENERAL
Environmental Management Plan (EMP) is aimed at mitigating the possible adverse impacts of the project and for ensuring to maintain the environmental quality. The environmental management plan consists of the set of mitigation, management, monitoring and institutional measures to be taken to eliminate the adverse environmental impacts or reduce them to acceptable levels.
3.2 AIR POLLUTION CONTROL AND MANAGEMENT
3.2.1 Construction Phase
The impacts will be due to the air emissions like Particulate matter (PM10 & PM2.5, CO2,
NOx and SO2 due to material handling, vehicular movements and other site activities. The particulate matters will be reduced by frequent sprinkling water on the road surfaces and on other areas where dust is arising due to material handling. All the equipments and vehicles used in the construction and transportation of materials will be maintained properly and only low sulphur diesel will be used as fuel for DG sets and construction equipment and vehicles. Setting up temporary portable concrete plants and/or asphalt plants at construction sites can eliminate haulage of materials. Also proper coverage of material storage at site reduces dust emission due to wind.
The emissions from the DG sets will be let out only through the stacks with adequate heights as per CPCB norms. This will avoid the deposition of the particulate matters and other pollutants by facilitating the through dispersion of pollutants into the atmosphere. The stacking of all the construction materials will be confined only within the proposed site. Vehicles carrying the raw material and debris will be covered to minimize dust emissions while travelling. Adequate parking space will be provided for construction vehicle and machinery to prevent idling and thus will help in minimizing the emissions. Wheel wash facility will be provided at the exit point of the site.
Conceptual Plan M/s. Tata Communications Ltd
3.2.2 Operation Phase
Air emissions are observed during the operation phase of the project. The air emissions will be reduced by ensuring smoother flow of traffic within the premises by better traffic management plans. Further, trees are provided all through the boundaries of the site and along the either side of the internal roads. This reduces the particulate matters from being transported to the nearby areas. The air emissions from the Diesel Generators will be controlled by using low sulphur content high speed diesels, periodic maintenance of DG sets as per the defined schedule of manufacturer and by providing adequate stack heights as prescribed by CPCB.
The project has 15 DG sets (2500 KVA x 15)
Air Pollution Control (APC) Measures
The main source of air emissions from the IT building is the Generator Sets the above generator sets which will be used only during TNEB power failure. To control the air emissions from these D.G sets, adequate stack height is provided to release the exhaust flue gases into the atmosphere at a height at which efficient dispersion takes place. Since the DG sets are operated only during power failure, the emission is not continuous and hence the impact due to these emissions is insignificant.
Stack Height Calculation for 2500 KVA Generator set:
The stack height for the DG of 30 m has been provided based on the CPCB guidelines
3.3 NOISE CONTROL AND MANAGEMENT
3.3.1 Construction Phase
The noise generated from the construction equipments will be reduced through proper maintenance of all the equipments which are involved in construction activities, confining the construction activities only during the day time and providing barricades all around the project area. The adverse impacts of noise especially on workers will be
Conceptual Plan M/s. Tata Communications Ltd reduced by providing ear muffs to the workers in high noise zones. Noise control systems such as equipment foundation pads, dampeners, silencers and acoustic enclosures will be used for individual units as per the requirement to minimize the noise & vibration.
3.3.2 Operation Phase
The increase in the ambient noise levels due to the vehicle transportation will be controlled by the development of the green cover all along the internal roads and by implementing better traffic management plans inside the site premises. The better traffic management plans will significantly reduce the noise generated due to the congestion caused by the movement of vehicles.
The generator noise is controlled by providing acoustic enclosures. Proper air ventilation system is designed to allow the maximum aspiration and cooling airflow required so that the engines do not overheat. Axial flow fan of required size & numbers provided for proper air ventilation. Acoustic louvers, splitter & insulated ducts are provided to suppress the noise where required. Also during operation care will be taken to ensure that there will not be any incremental load in the environment.
3.4 SOLID WASTE MANAGEMENT
3.4.1 Construction Phase
Separate raw material handling yard will be demarcated. This will prevent the contamination of the soil due to the spillage of the construction materials. Cement will be separately stored under cover in bales. The raw material handling yard will be located within the project site and separated by enclosures/barricades. This will keep the working area clean and reduce the soil contamination. The solid waste expected to be generated during the construction phase will comprise of excavated materials, used bags, bricks, concrete, MS rods, tiles, wood etc. The following steps are proposed to be followed for the management solid waste:
Conceptual Plan M/s. Tata Communications Ltd Construction yards are proposed for storage of construction materials. • The excavated material such as topsoil and stones will be stacked for reuse during later stages of construction. • Excavated top soil will be stored in temporary constructed soil bank and will be reused for landscaping. • Remaining soil shall be utilized for refilling / road work / rising of site level at locations etc.
3.4.2 Operation Phase
During the operation phase the used oil from the DG sets will be collected in separate drums and handed over to the authorized recyclers by TNPCB.
Hazardous Waste: During the operation phase the used oil, DG filters, oil mixed cotton waste and oil containers from the DG sets will be collected in separate place.
Generation and disposal of Hazardous waste Quantity per annum is given in Table 12 Table 12: Hazardous Waste Generation and Disposal
Activity/Activities for which authorization Quantity in Waste Description of is required S.No Tonnes/per category waste Collection & annum Transport & Disposal Storage MS drums Disposal through DG Filters & filter 1 35.1 0.6 within the TSDF facility material premises Gummudipoondi 0.5 MS drums Disposed to 2 5.1 Used oil within the authorized re - premises processors
Non- Hazardous Waste:
It is estimated that the municipal solid wastes will be generated in the following passion:
Conceptual Plan M/s. Tata Communications Ltd
Biodegradable wastes : 0.56 T/day Non-biodegradable wastes : 0.37 T/day Sludge from STP : 18 Kg/day
Wastes generated from each blocks will be segregated into compostable waste, recyclable and inert waste in the source itself in different colored bins. Compostable waste will be treated in organic waste convertor within the site. Manure generated will be used within the site for landscaping purpose. Recyclable fraction of waste will be sold to authorized vendors and inert waste will be send for landfilling through authorized agency for waste collection in the area.
Horticulture wastes leaves, grass and vegetative residues shall be collected at the secured location such that it will not hinder daily activity schedule or washed away by the surface run-off causing choking of drains, etc. and will be separately treated and disposed off along with biodegradable waste. STP sludge will be stabilized, and dewatered for separation of solids, which will be used as manure in horticulture.
Solid waste
Source Separation
Non Biodegradable Waste Biodegradable Waste
Collection point Collection point
Sent to authorized recyclers Organic waste converter
3.5 WATER AND WASTEWATER MANAGEMENT
3.5.1 Construction Phase
The wastewater generated by the construction workers will be treated and disposed through septic tank with soak pit arrangement. All the water storage tanks/containers will be maintained without any leaks. Necessary precaution and preventive measures
Conceptual Plan M/s. Tata Communications Ltd will be taken at the site during construction to avoid any groundwater and surface water contamination.
3.5.2 Operation Phase
The recycled water is being used for the part of the daily water demand in the premises and the same will be followed for the proposed building. The total fresh water requirement during operation after expansion is 427 KLD. The wastewater generation from the project is estimated to be about 199 KLD, which will be treated in sewage treatment plant of 230 & 70 KLD STP. Treated sewage of 189 KLD will be reused for flushing, gardening and OSR.
3.6 STORM WATER MANAGEMENT
3.6.1 Construction Phase
The surface runoff during the construction period will be directed into the drains separately provided for this purpose.
3.6.2 Operation Phase
Rain water from internal roads etc will be discharged through storm water drain sloping towards rain water collection sumps. The Rainwater down comer pipes from terrace level directly connected to rainwater inspection chambers interlinked and discharged to filtration bed to store Rain water of min. An overflow pumping main pipe will be laid as lead pipe from rainwater harvesting trench up to the road for draining the excess water during rainy seasons. As per Rain water harvesting & conservation manual by CPWD, Govt .of India, it is necessary to provide rain water sump with the capacity to meet per day fresh water requirement.
TABLE 3: RUNOFF CO-EFFICIENT OF VARIOUS SURFACES AS PER CPWD
S.NO VARIOUS SURFACE AREA CO-EFFICIENT
1 ROOF CATCHMENT
1.1 Tiles 0.8-0.9
Conceptual Plan M/s. Tata Communications Ltd
1.2 Corrugated metal sheets 0.7-0.9
2 GROUND SURFACE COVERING
2.1 Rocky material catchment 0.2-0.5
2.2 Residential complex in suburban areas apartment0.5-0.7
2.3 Parks, cemeteries 0.10-0.25
2.4 Unimproved land areas 0.10-0.25
2.5 Asphaltic or concrete pavement 0.7-0.95
2.6 Brick pavement 0.70-0.85
2.7 Play ground 0.2-0.35
The highest recorded monthly rainfall in that area and surroundings of Tiruvallur is 1017.7 mm during 2015 considering the previous 5 years day peak rainfall (Refer Table below from IMD). Tiruvallur receives considerable rainfall thus storm water management system has been designed considering the peak hourly rainfall of 60 mm. Rain water from internal roads etc will be discharged through storm water drain sloping towards rain water collection sumps. The Rainwater down comer pipes from terrace level directly connected to rainwater inspection chambers interlinked and discharged to filtration bed to store Rain water of min. An overflow pumping main pipe will be laid as lead pipe from rainwater harvesting trench up to the road for draining the excess water during rainy seasons. UPVC pipes of 6 kgf/sq.cm and specials of approved make are considered.
Table 13: Five Yearly Rainfall
Rainfall (mm) Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2013 0.1 55.1 21.1 22.5 15.6 92.2 128.8 151.7 240 189.1 121.1 29.7 2014 0.7 0.8 0.0 0.0 24.6 81.3 77.3 135.6 130.6 222.0 157.4 109.7 2015 0.8 0.0 1.3 53.2 38.8 48.7 150.0 170.4 86.1 177.2 908.0 384.8 2016 1.2 0.0 0.0 0.0 158.6 149.2 54.0 18.1 185.4 5.3 28.0 214.4 2017 6.0 0.0 1.7 0.0 14.1 60.8 111.9 227.3 103.3 279.9 335.5 62.4
Conceptual Plan M/s. Tata Communications Ltd DESIGN PARAMETERS:
Total Plot Area Considered 84457 Sqm Total roads and pavement area 18557.3 Sqm Total Greenbelt Area 18167.6 Sqm Total Roof Area 14490.28 Sqm
Co – efficient of runoff considered for roof area : 0. 85 Co – efficient of runoff considered for road/paved area : 0. 75 Co – efficient of runoff considered for landscape area : 0. 25
Table 14: Run –off Calculations
Total Rainfall Coefficient Rainwater Description Area in Sqm intensity in runoff Runoff m Cum/hr Road area 21136.04 0.75 1.2 19022.436 Green area 15588 0.25 1.2 4871.25 Roof area 14490.28 0.85 1.2 14780.09 Total Run-off 38673.776 Considering 30 days rainy day in 365 days per day, rainwater per day1289.12 Run off to UG sump (100% roof top collection) 500 Run off for recharge 789 Size of recharge pit(1.2 m dia & 3.5m depth) 3.95 No. of pits to be provided 93 Excess run off to storm water drain 421.65
The run-off from the terraces shall be separately piped to an underground collection sump, after duly filtering the same. This water is proposed to be used as domestic water after necessary treatment.
Rain water storage sump (500 KLD) is provided.
The runoff from rooftop will be diverted to the UG sump for rainwater storage and use.
Conceptual Plan M/s. Tata Communications Ltd
The runoff from the roads & pavement, greenbelt and open areas will be diverted to the rainwater percolation pits for recharge.
Surplus runoff after storage and recharge will be disposed to existing storm water.
RECHARGE TRENCHES
Recharge trenches are normally excavated as linear pits, which are sufficiently deep to penetrate the low-permeability layers overlying the permeable layer. They are similar to recharge basins in principle, with the only difference being that they are deeper and have restricted bottom area. In many such structures, the infiltration occurs vertically through the permeable layer is much higher than the low permeable layer occurring in the top. Recharge Trench will be constructed in the premises of the company across the slopes.
Details of Recharge Trenches: Trench maintained all along the boundary, the depth of the trenches is around 1.50 m. The width of the trenches is 1.0 m. Pebbles of different size is provided in an ascending order in the tank and a layer of sand is provided on top of the filter media. The rain water flowing through the open land, paved area and green belt area will be used for recharging to ground water through the above said trenches.
Rain Water Storage Sump
The Rain water storage and harvesting plan has been designed as per the Rain water harvesting (RWH) & conservation manual by CPWD, Govt .of India, 2002 & in compliance with Ministry Notification dated 9th December 2016 under 20,000 to 50,000 Sqm category. Rain water storage sump 2, 40, 000 litres capacity- 2 nos. is proposed for rainwater storage. Flood Occurrence:
The highest recorded monthly rainfall in that area and surroundings of Kancheepuram is 1061.3 mm in 2015. Considering the previous 5 years day peak rainfall (Refer Table below from IMD) the storm water management has been done, the total peak flow at
Conceptual Plan M/s. Tata Communications Ltd the site by taking 1.2 m of Annual rainfall in site, the runoff will be 115.59 cubic meter after development, the recharge pit, storm water collection sump and storm water collection drain have been designed in the site to the manage the rain water during heavy rainfall time.
3.7 LANDSCAPE AND ECOLOGICAL MANAGEMENT
3.7.1 Construction Phase
As there is tree cutting involved in this project, a separate greenbelt development programme will be initiated. The greenbelt development would enhance micro climatic condition and habitat of avifauna. Trees will be planted in the ratio of 1:10. The planting arrangement and size would be based on the optimum use of the available land, quantum of irrigation water, purpose of plantation and the tree species. The plantation on landscape area and all through the boundaries of the site and along the either side of the internal roads will have positive impact over the fauna of the locality. Based on the biodiversity study carried out near the site, the following species of flora and fauna were observed. Miyawaki method is adopted for the proposed plantation.
Design of Green Belt: 1. Standard pit size would be 60 cm x 60 cm x 60 cm. 2. The distance between pits would vary depending on their location 3. The pits should be filled using good soil (3 parts) and farm yard manure (1 parts) 4. Rhizobium commercial preparation (1 kg/1000 kg) 5. BHC powder, if the soil inhabits white ants (Amount variable) 6. The pits will be watered prior to the plantation of samplings
Conceptual Plan M/s. Tata Communications Ltd
Table 15: Flora in the study area Sl. No. Scientific name Common Name 1. Azadirachta indica Neem 2. Borassus flabellifer L. Banyan 3. Cocos nucifera Coconut 4. Delonix regia Gulmohar 5. Ficus benghalenis L. Banyan 6. Leucaena leucocephala River tamarind 7. Mangifera indica Mango 8. Peltophorum pterocarpum Copper pod tree 9. Polyalthia longifolia (sonn.)Ashoka 10. Pongamia pinnata pungam 11. Tamarindus indica Tamarind 12. Plumeria rubra White frangiplants 13. Moringa olifera Drumstick tree 14. Psidium gujava Guava
Conceptual Plan M/s. Tata Communications Ltd
Table 16: Fauna in the study area Mammals Sl. No. Common name Scientific name 1. Indian grey mangoose Herpestes edwardsii 2. Indian palm squirrel Funambulus palmarum 3. Indian pipistrelle Pipistrellus coromandra. 4. Dog Canis lupus familiaris 5. Cats Felis catus 6. House rat Rattus rattus 7. Mice Mus sp.
Bird species Sl. No. Common name Scientific name 1. Grey pelican Pelecanus philippensis 2. Painted stork Mycteria leucocephala 3. Grey heron Adrea cinerea 4. Common teal Anas crecca 5. Common moorhen Gallinula chloropus 6. Little erget Ergetta garzetta 7. Common kingfisher Alcedo atthis 8. Spotted owlet Athene brama 9. House crow Corvus splendens 10. Common mynah Acridotheres tristis 11. Asian koel Eudynamys scolopaceus 12. Shikra Accipiter badius Reptiles SI No Common name Scientific name 1. Garden lizard Calotes versicolor 2. Common skink Mabuya carinata 3. Garden skink Lygosoma punctata 4. Green vine snake Oxybelis fulgidus 5. Olive keelback Atretium schistosum 6. Oriental ratsnake Ptyas mucosa 7. Bengal monitor Varanus bengalensis 8. Indian flapshell turtle Lissemys punctata Amphibians SI No Common name Scientific name 1 Green pond frog Euphlyctis hexadactylus 2 Skittering frog Euphlyctis cynophlyctis 3 Indian bullfrog Hoplobatrachus tigerinus 4 Indian tree frog Polypedates maculatus 5 Asian common toad Duttaphyrus melanostictus 6 Ornate narrow-mouthed Microhyla ornata 7 Marble frog Ramanella variegata Butterflies
Conceptual Plan M/s. Tata Communications Ltd
SI No Common nameScientific name 1 Lime butterfly Papilio demoleus 2 Mottled emigraCatopsilia pyranthe 3 Common crowEuploea core 4 Plain tiger Danaus chrysippus 5 Glassy tiger Parantica aglaea 6 Peacock pansy Junonia almanac 7 Tawny coster Acraea violae
3.7.2 Operation Phase
After expansion, the total landscape area will be around 18167.6 Sqm. The details of trees (Name and Number) in existing green belt are enclosed in Annexure. It is also proposed to plant only native species. In addition to augmenting present vegetation, it will also check soil erosion, make the ecosystem more diversified and functionally more stable, make the climate more conducive and restore balance. To restore the ecology due to the lost tree species, dense plantation is proposed which will be achieved through Miyawaki method. The following species are proposed for the plantations in the site. More carbon sequestration tree species will be planted to avoid pollution, carbon emission and thermal rise and trees which are tolerant to dust and smoke will also be planted. Thick trees with greater canopy are also proposed which act as shade providers. Adequate numbers of these species will be planted in the Landscape in addition to the existing trees, along the boundaries of the site and along the either sides of the internal roads.
Table 17: Trees proposed
S. No. Scientific Name Local Name
1. Acacia auriculiformis Pencil tree 2. Alstonia soholaris Devil tree 3. Butes monosperma Flame of the forest 4. Ficus benjamina Weeping fig 5. Madhuca indica Iluppai 6. Pongamia glabra Pungai 7. Ficus religiosa Arasa maram
Conceptual Plan M/s. Tata Communications Ltd
8. Terminalia arjuna Marutha maram 9. Albizzia lebbek siridam 10. Thespesia populnea Indian rosewood
3.8 SOCIO ECONOMIC DEVELOPMENT PLAN
3.8.1 Construction Phase
Only locally available workforce will be used for the construction purpose. This will result in the improved economic condition of the people of that area, at least during the construction period. Medical checkups will be done at regular intervals to all the employees working. Trained first aid personnel will be made available round the clock throughout the construction phase. The safety procedures will be made available with the respective shift in charges and the same will be pasted in the workplaces. All the employees involved in the construction activities will be provided with the necessary Personal Protective Equipments (PPE) and instated to use it. Occupational health and safety orientation training will be given to all employees consisting of basic hazard awareness, site-specific hazards, safe working practices, and emergency procedures Monthly safety assessment meetings will be conducted to identify potential safety issues (e.g., site access, construction, work practices, security, transportation of heavy equipment, traffic management, emergency procedures and fire control and management) and measures to mitigate them.
3.8.2 Operation Phase
Since the project is already in operation, it offers employment to the people from all sects of the society. The project also stimulates the auxiliary developments around the project area. This will result in the development of necessary infrastructure and amenities at least around the project site.
Conceptual Plan M/s. Tata Communications Ltd
3.9 ENERGY CONSERVATION
Energy conservation will be one of the focuses during the project planning and operation stages.
3.9.1 Energy Saving Practices
Use of Energy Efficient low loss – electrical ballast. Usage of CFL/LED lamps Use of capacitor banks power factor improvement of EB power Use of copper wound transformer Solar panels for external and common area lighting. Use of occupancy sensors and dimmers for lights in the parking areas
Energy Conservation Measures
Building Construction Data In accordance with Energy Conservation Building (ECBC) Code 2007 norms, Tiruvallur comes under warm & humid climate zone. Hence, based on the ECBC norms, U Values considered are as follows:
Roofs & Opaque Walls
Roofs and opaque walls shall comply with either the maximum assembly U-factor or the minimum insulation R-value. R-value is for the insulation alone and does not include building materials or air films. The roof insulation shall not be located on a suspended ceiling with removable ceiling panels.
Conceptual Plan M/s. Tata Communications Ltd Table 18: The U-values of the roof and opaque wall of the building will meet the requirements as specified in the Energy Conservation Building Code (ECBC)
The U-values of the roof and opaque wall of the building will meet the requirements as specified in the Energy Conservation Building Code (ECBC) Permissible U-Value as Resultant Value due to the ECBC Clause: Component per proposed configuration (Reference) ECBC (W/m2°C) (W/m2°C) 4.3.1 Roof U-0.261 R-3.5 4.3.3 Wall U-0.44 R-2.1
Vertical Fenestration
Vertical fenestration shall comply with the maximum area weighted U-factor and maximum area weighted SHGC requirement. Vertical fenestration area is limited to a maximum of 60% of the gross wall area for the prescriptive requirement.
Table 19: Vertical Fenestration
40% WWR=40% Electrical & LV Systems a. Copper conductor cables are specified for sizes of 16 sq mm and below, this will reduce losses and improve reliability. b. All lifts shall be provided with AC variable voltage, variable frequency drives (ACVVF). c. Power factor shall be maintained 0.95 or higher. This will reduce electrical power distribution losses in the installation. Conceptual Plan M/s. Tata Communications Ltd d. Timers and photo-electric sensors shall be used to switch ON / OFF external landscape and facade lighting. e. Compact Fluorescent Lamps (CFL’s) with high frequency ballast shall be used for plant rooms, corridors and BOH areas. f. All fluorescent light fixtures are specified to incorporate electronic chokes which have less watt-loss compared to electro-magnetic chokes and result in superior operating power factor. This indirectly saves energy. Electronic chokes also improves life of the fluorescent lamps. g. All fluorescent light fixtures are specified to incorporate high frequency ballast. Due to high frequency ballast florescent tube consume less energy. h. Energy efficient fluorescent lamps & CFL lamps which give approx. 30% more light output for the same watts consumed and therefore require less nos. of fixtures and corresponding lower point wiring costs. i. An APFC relay based on thyristor switching is proposed to effect the power factor correction / improvement within a few cycles of deviation from the setting & also to reduce inrush currents. j. Transformers shall have minimum no load losses as compared to conventional transformers. Plumbing & Fire Fighting a. VFD based hydro pneumatic system. b. Pumps & equipment selected on “best” energy efficiency point. Solar system The details of the solar system in the existing building is listed S. No Location Capacity 1 Near Security room 4 KVA 2 Near Asianet Building 39 KW Conceptual Plan M/s. Tata Communications Ltd (a) Security Room (b) Asianet Building Figure: Solar Panel 3.10 SOIL ENVIRONMENT The top soil upto 2m is Red and Brown Silty Fine to Medium Sand, followed by Red and Brown Gravely Fine to Coarse Sand with Silt upto 5.5 cm, Red Gray brown Silty Fine to medium Sand upto 10 m and red Gray Brown Fine to medium sand with silt till 30 m. 3.11 FIRE PROTECTION MEASURES The entire design of the building is based on the National Building Code (NBC). An UG fire sump of 200 KL is provided in the site. The fire protection measures consist of the following. Fire Hydrant system System consists of hydrants, down comer system and external yard hydrant system. Automatic Sprinkler System Automatic sprinkler system is provided for the basement areas Fire alarm System Fire alarm system is provided for each floor Conceptual Plan M/s. Tata Communications Ltd Portable Fire Extinguishers 1. Fire extinguishers will be provided in such a way that the Occupants shall not travel more than 15m to reach a Fire extinguisher. 2. A minimum of two extinguishers is provided in each floor. Public address system In addition to this, it is also proposed to provide public address system in each floor near stair case area. This will help in addressing / altering the people by the security personal through microphone arrangement. 3.12 RISK ASSESSMENT, DISASTER MANAGEMENT AND SAFETY MEASURES A well - defined Risk Management Plan is made as follows: STEP 1: Define the Projects/Tasks Site Clearing Excavation Raft RCC slab Block work / plastering External plastering Joinery - frame fixing Flooring Interior works Windows fixing Flooring False ceiling Painting Services I.Electrical II.Plumbing Conceptual Plan M/s. Tata Communications Ltd III.Fire fighting Equipments i. Elevator ii. STP /WTP iii. Hard and landscape STEP 2: Identify the Hazards a) Are you using (Tick boxes) [ ] plant/equipment [ ] scaffolding [ ] portable electrical equipment [ ] ladders [ x ] pressure vessels/boilers [ ] lifts/hoists/cranes/dogging/rigging/load [ x ] hazardous substances shifting machinery b) Does the project/task involve (Tick boxes) [ ] using tools/equipment with [ ] working around electrical installations moving part(s) [ ] working near traffic [ ] using tools/equipment that [ ] working at a height (>3m) vibrate [ ] working in isolation [ x ] working with x-rays ,or lasers [] working in a confined space [ ] electrical wiring [ ] manual handling [ x ] asbestos removal [ ] repetitive or awkward movements [ ] welding [ x ] lifting or moving awkward or heavy objects [ x ] hazardous waste [ ] excavation / trenches (>1.5m) c) Is there (Tick boxes) [ ] noise [ ] slippery surfaces/trip hazards [ ] dust/fumes/vapours/gases [ x ] poor ventilation/air quality [ x ] extreme temperatures [ x ] a poorly designed work area for the project/task [ x ] risk of fire/explosion STEP 3: Assess the Risk Conceptual Plan M/s. Tata Communications Ltd Table 20: During Construction Phase: Activities Air PollutionWater PollutionNoise PollutionSoil PollutionOccupational Hazard A. Material Handling: Cement +M - - +M +M Steel - - + - +M Sand - - - - - Stone - - - - +L Wood - - - - - Glass - - - - +H Hardware - - - - - Colour - +H - +H - B. Construction Machinery Rotary Driller +L - +H - +H Mixers +M - +M +L +M Excavator +L - +L - +H Material Lift - - +L - +H Risk Factor: + : Positive - : Negative L : Low M : Medium H : High For any projects/tasks that present a high or extreme risk, a Safe Work Method Statement must be completed. Conceptual Plan M/s. Tata Communications Ltd STEP 4: Control the Risk Note how you will control the risk following the priorities listed to the right. This may include controls like redesigning the workplace, using guards or barriers, ventilation, using lifting equipment or personal safety equipment. Eliminate the Hazard Keep the Hazard and People Apart Change the Work Methods Use Personal Protection Note any specific risk assessments required for high-risk hazards. Check whether any hazards noted in step 2 require further assessment or action. [ x ] hazardous substance risk [ ] confined spaces risk assessment assessment [ ] sound level test [] test and tag electrical equipment a) Note Permits/Licenses/Registration required [x ] Demolition work [ x ] Friable asbestos removal [ ] Electrical wiring [ x ] Ionizing radiation sources [ x ] Pressure vessels [ ] registers for chemicals, Personal protective Equipment, training, ladders, lifting gear b) Note certificates of competency/licenses for operators [ ] Scaffolding [ ] Pesticide application [ ] Rigging [ ] Crane operation [ ] Load shifting machinery operation [ ] Hoist operation c) Note emergency systems required [ ] first aid kit [ ] Fire control [ ] extended first aid kit [ ] remote communication mechanism [ ] emergency stop button [ x ] others [ ] additional emergency procedures Conceptual Plan M/s. Tata Communications Ltd STEP 5: Actions Required to Control the Risk A. During construction to reduce pollution: Manual water sprinkling during dust excavation Using RMC to reduce air pollution Dust cover for Trucks New Construction Machinery Equipment will work intermittently Rotary drillers instead of acoustic drillers Vehicular trips will not be at peak traffic hour Ear Plugs to workers No noise polluting work in night shifts B .Safety & Hygienic Measures: Adequate drinking water, toilet and bathing facilities There will be free medical camps and first aid rooms for workers Safety equipments like helmets, safety shoes etc. to personnel and visitors Personnel protective equipments like leather gloves, goggles and ear muffs when required Personnel working on heights will wear safety equipments and will not work alone To prevent any accidents, the entire area under construction will be cordoned off with tin sheets and safety tape is run outside this fence Regular pest control will be done Adequate fire fighting equipments will be provided Operational Phase: Risks in the building will be due to natural calamities like earthquake, flooding and others such as fire and accidental hazards. All precautions will be taken to control these risks. Fire fighting system shall be provided as per regulations of Chief Fire Officer. For earthquake resistance, the structural design shall be as per is certified as per IS code 875 and IS- 1893-2002 for Seismic Zone 3 of Chennai. Conceptual Plan M/s. Tata Communications Ltd 3.12.1 First Aid Facilities: Construction projects will comes under the highly hazard or specific hazard category. Requirement of the first aid provision at work depends on several factors including size of the undertaking, number of employees, hazard arising , access to medical services, workers in isolated locations, etc., Construction phase we have plan to appoint one trained first aider for this proposed development project, and a registered nurse. First Aid Room: Location, Work Space, Work Environment, Signs & Management – the First Aid room easily accessible during working hours and also close to road access. The first aid room should be easily recognizable signs. First Aid Minimum Requirements for this proposed construction project: Furniture & Fittings: Wash basin with hot and cold water supplies, Desk, work bench or dressing trolley, Telephone, Electric power points, Couch with blankets and pillows. Medical Requirements: Examination Table, Examination Lamp, Stretcher Lifting Frame or similar device for transporting patients, First aid kit, Dressing clothes and gloves, soap, disposable towels, trays and bowls. 3.13 ENVIRONMENT MONITORING PLAN FOR CONSTRUCTION AND OPERATION PHASE Environmental monitoring plan is a vital process of any management plan of the development project. This helps in signaling the potential problems that resulting from the project and will allow for prompt implementation of effective corrective measures. The environmental monitoring will be required for the construction and operational phases. The main objectives of environmental monitoring area: To assess the changes in environmental conditions, To monitor the effective implementation of mitigation measures, Conceptual Plan M/s. Tata Communications Ltd Warn significant deteriorations in environmental quality for further prevention action. The emissions from each of the diesel generator shall be monitored for exit concentration of Sulphur dioxide, Oxides of Nitrogen and Particulate Matter on regular intervals. The frequency of monitoring shall be decided in consultation with the TNPCB. Sampling ports in the stacks/vents shall be provided in accordance with CPCB guidelines. Table 21: Environmental Monitoring Plan S. No. Description Frequency of Sampling and Analysis Construction Phase 1. Ambient Air Quality Once in six month – 24 hourly 2. Stack Emissions from DG set Once in six month 3. Ambient Noise Level Once in six month 4. Soil Quality Once in six month 5. Ground Water Once in six month Operation Phase 1. Ambient Air Quality Once in six month – 24 hourly 2. Stack Emissions from DG Set Once in six month 3. Ambient Noise Level Once in six month 4. Treated Sewage Once in a week 5. Ground Water Once in six months Table 22: Budgetary allocation for environmental management during Construction phase Budgetary Allocation (Rs. In Lakhs) Description Operational Expenses Drinking Water & Sanitation 8 (Temporary Toilet) Facilities Storm Water Management 5 Solid Waste/Debris Management 15 Environmental Monitoring 6 Conceptual Plan M/s. Tata Communications Ltd Dust Suppression Measures 7 Occupational Health & Safety 7 Labour camp sanitary & other 6 facilities Total 54 Table 23: Budgetary allocation for environmental management during Operation phase Description Budgetary Allocation (Rs. In Lakhs) Capital Expenses Operational/ Maintenance Expenses (Per Annum) Sewage Treatment Plant & 55 Recycling System Labour 3.6(40000 INR/month) (2 operators/1 reliever) Power 1.2(10000 INR /month) Consumables (chlorine, oil & Grease) 0.6(5000 INR /month) Rain Water Harvesting System 17 2 Solid Waste Management 5 Collection and segregation 6(50000 INR/month) manpower Composting power 0.24(2000 INR/month) Environmental Monitoring - 5 Energy Conservation 25 3 Green area Development 20 Conceptual Plan M/s. Tata Communications Ltd Sweeper 1.8(15000 INR/month) Gardner 1.8(15000 INR/month) Manure 1.2(10000 INR/month) Total 122 24.44 *********