Form – IA Developer – Ambey Realtors LLP

Proposed Residential & Commercial Complex at Biswa Bangla Sarani, Chinar Park, Kolkata - 700136 Form – IA Developer – Ambey Realtors LLP

FORM – IA (Only for construction projects listed under item 8 of the schedule)

CHECKLIST OF ENVIRONMENTAL IMPACTS (Project proponents are required to provide full information and wherever necessary attach explanatory notes with the Form and submit along with proposed environmental management plan & monitoring programme)

1. LAND ENVIRONMENT (Attach panoramic view of the project site and the vicinity)

1.1 Will the existing landuse get significantly altered from the project that is not consistent with the surroundings? (Proposed landuse must confirm to the approved Master Plan / Development Plan of the area. Change of landuse if any and the statutory approval from the competent authority to be submitted). Attach Maps of (i) site location, (ii) surrounding features of the proposed site (within 500 meters) and (iii) the site (indicating levels & contours) to appropriate scales. If not available attach only conceptual plans.

Ans: The proposed project is a development of a residential cum commercial complex comprising of seven residential towers and 1 commercial building alongwith club & community facility block which will be developed by Ambey Realtors LLP. Area of the land is 11869.0 sq.m. At present, project site is mostly vacant with few trees. Landuse of the project site has been converted to bastu. The residential towers will be B + G + 9 and G+ 4 storied while club house will be G+3 storied and commercial building will be G+2 storied. The car parking facility is provided in basement, common ground floor of all the buildings and it will be availed by the residents and commercial staff of the proposed complex. Proposed total number of residential flats will be 246. Total built up area of the proposed development is 41,015.66 sq.m. The development will be mixed with residential and commercial use. The landuse of the surrounding area is residential cum commercial in nature. Thus, proposed development is consistent with the surroundings. Maps showing site location, surrounding features, concept proposal etc. are attached in Annexure- 1.1 for reference.

1.2 List out all the major project requirements in terms of the land area, built up area, water consumption, power requirement, connectivity, community facilities, parking needs etc.

Ans: The proposed project is a Residential Cum Commercial Complex. Basic requirements for the project in terms of the above-stated criterions are listed below:

Location of Plot : Dag no. – 199, 205, 218, 227, 232 – 236, 248 – 254, Khatian no. – 1276, 1274, 1537 – 1549, 1581, 1824, 1825, 1844, 1863, 1892 - 1894, 1899 - 1902, 2293, 2311, 2452, Mouza – Atghara, J.L. No. – 10, Biswa Bangla Sarani, Chinar Park, Kolkata – 700136, Ward No. 12 of Bidhannagar Municipal Corporation. , P.O. – Rajarhat Gopalpur, P.S. – Baguihati, West Bengal.

Connectivity: The project site is abutted by Biswa Bangla Sarani that connects to Kajji Nazrul Islam Sarani (VIP Road) at its west and Newtown in the east direction. The site is close to Chinar park crossing in west as well as close to Akankha more crossing in east direction. The proposed site is well connected to the important locations of the city like Newtown, Salt Lake Sector-V, North & Central Kolkata by public as well as private transport. E.M. Bypass at a distance of 10.0 km from site connects to the south, north & central Kolkata via connectors. One of the attractive features of the proposed project is its close proximity to upcoming east-west metro railway route near city centre II which is presently under construction. Distance to the nearest metro station will be within 0.25 km from the site. The site is approximately 3.5 km from Dum Dum Station, 9.6 km from Sealdah Station & 6.3 km

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from Bidhan Nagar Railway Station - one of the busiest railway stations providing an interface to different parts of the country through an extensive railway network. Netaji Subhas Chandra International Airport is around 2.15 km from project site.

AREA STATEMENT Land Area : 11,869.0 sq.m Width of abutting road : 21.7 m Permissible F.A.R. : 2.75 Permissible Built Up Area : 32,639.75 sq.m + F.A.R. Allowance Area Permissible Ground Coverage : 5,341.05 sq.m (45 % of Land Area)

Design Proposal: Proposed Ground Coverage : 39.58 % of Land Area = 4,698.501 sq.m Proposed F.A.R. : 2.68 Proposed Total Built up Area : 41,015.66 sq.m (including exempted area) Proposed F.A.R. Area : 31,761.80 sq.m (excluding exempted area) Height of the Building : 31,761.80 sq.m No. of Building Blocks : 7(Residential), 1 (Commercial), 1 (Club Block) No. of Residential Flat : 246

Proposed Landuse Distribution: Development Component Area & Percentage Area (in sq.m) % of Land Area Ground Coverage 4698.501 39.58 Exclusive Plantation Area 2450.414 20.64 Internal Road (Paved Surface) 1491.461 12.57 Open Parking Area 407.711 3.44 Service Area 478.018 4.03 Semi Paved Area 2342.895 19.74

Hard Surface Calculation: Total hard area = Internal Road area + 50 % Open Parking Area + 50 % Semi Paved Area = 1491.461 + 407.711 X 50% + 2342.895 X 50% sq.m = 2866.764 sq.m (24.15 % of the land area).

Occupancy Pattern:

Occupancy Type No. of Occupants Residents 1195 persons Residential Floating 120 persons Service Staff 50 persons Office Employee 27 persons Shop Employee 26 persons Total Occupants 1418 persons

Power Requirement and Source of Supply: Power requirement for the proposed complex is assessed as 1200 kW. Power is to be supplied by WBSEDCL. D.G. Back up details are = 1 X 500 kW.

Water Requirement and Source of Supply: Total daily water requirement during operational phase has been estimated as 216 kLd out of which domestic consumption will be 186 kLd. Municipal supply is expected to be the source of freshwater during construction as well as operational stage for which application has already been made to the concerned authority. However, in absence or inadequate municipal supply,

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groundwater will be abstracted with prior permission from the concerned authority. Nearly one third of the domestic water requirement is for toilet flushing that will be met supplying treated wastewater from S.T.P. This in turn will reduce the fresh water requirement. Another source of water will be rooftop rainwater collected during monsoon. Parking Requirement: Car Parking Required: 268 nos. Car Parking Provided: 272Nos. (gr. fl. Covered = 123, Open = 43, basement = 106). Detailed Car Parking Calculation is provided in Sl . No. – 5.3 of Form –IA.

1.3 What are the likely impacts of the proposed activity on the existing facilities adjacent to the proposed site? (Such as open spaces, community facilities, details of the existing landuse, disturbance to the local ecology).

Ans: The probable impacts due to the proposed project on the existing facilities will be both short-term and long-term in nature. Some of the impacts may prove beneficial in long run. The likely impacts due to the proposed project are: A. Impact on Open Spaces During construction phase, adequate preventive measures will be adopted to control the fugitive emission, wastewater discharge and construction waste disposal procedures, to keep the impacts minimum on the surroundings. During the operational phase, comprehensive waste management program will be designed for disposal of wastewater (treated) & solid waste causing least possible impact on the surroundings due to the proposed development.

B. Impact on Community Facilities The surroundings of the proposed site have low to medium population density with moderate population density & only scattered community facilities in the immediate vicinity. Nearest local daily need based market is located near Atghara, Lokenath mandir area & organized market centers are opposite to project site (spencers), in city center II, in Baguihati, Teghoria, Kaikhali. The site is well connected to Baguihati and Rajarhat by auto rickshaw, rickshaw, buses plying on the abutting road. Organized market center, healthcare facilities are present in the immediate vicinity. As the proposed project site has location advantage, the area will see many more real estate and commercial developments in near future leading to greater inhabitancy and rise in local population. The development of the said project will demand improvement in existing infrastructure, community facilities etc. & will lead to overall betterment of the locality.

C. Impact on Existing Landuse The proposed development is in concurrence with the existing landuse of the surroundings hence no impact. And as the locality is moderately populated, there will be no noticeable impact due to the residential project as the population will marginally increase.

D. Impact on Local Ecology The project site has few trees, which will be retained. Thus, there is no scope of clearing or modification of existing trees. Moreover, quite a number of trees will be planted under the proposed landscaping scheme within this complex. Therefore, local ecology is expected to get improved.

1.4 Will there be any significant land disturbance resulting in erosion, subsidence & instability? (Details of soil type, slope analysis, vulnerability to subsidence, seismicity etc. may be given.

The soil of the study area has been developed under the dominant influence of river, vegetation and climatic factors. The area is under heavy anthropogenic pressure due to different human activities. The soil of the area consists mainly of silt and clay, deposited by river, partly under river and partly under flat plains. The colour of the soil is grayish. pH of soil inside the site is 7.23. Sand, silt and clay contents are 2.18%, 60.2% and 37.6% respectively. Soil texture is silty clay.

The site is leveled and situated above the flood level of the region, though the existing ground level

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of the project site is at par with the abutting road. No significant contours were observed. Also, as the building blocks will have foundation, therefore excavation of earthwork and piling activities will take place. Therefore, while executing the project, the existing ground level will be modified. But, adequate measure will be taken to minimize the land disturbance of the project site and surrounding areas.

The soil profile of the project site is as follows: Stratum No. Depth below EGL (m) Description From To Stratum- I 0.00 1.00/2.30 Filled up by soil, small kankars, roots, organic matter and small plastic etc. Stratum- II 1.00/2.30 2.40/4.10 Soft grayish silty clay/ clayey silt with brown spot Stratum- III 2.40/4.10 11.50/14.50 Very soft to firm greyish silty clay / clayey silt with decomposed wood Stratum- IV 11.50/14.50 15.80/18.80 Firm to stiff bluish grey silty clay with calcareous nodules and brown spot Stratum - V 15.80/18.80 19.00/22.10 Stiff to very stiff yellowish brown silty clay / clayey silty with brown spot Stratum - VI 19.00/22.10 25.00/28.20 Medium dense to very dense yellowish brown silty fine to medium sand with mica Stratum - VII 25.00/28.20 30.60 Stiff to very stiff yellowish brown silty clay/ clayey silt with brown spot

The surrounding area of the project site is mixed in nature with residential & commercial uses. No mining or any other underground activity is carried on in and around the campus. Thus, regarding the subsidence, the project is not at all vulnerable. The east – west metro work is in progress mode in front of the project site. The area under study falls in Zone-III according to the Indian Standard Seismic Zoning Map. Suitable seismic coefficients in horizontal and vertical directions respectively, will be adopted while designing the structures. There are no chances of floods and landslide as the project site is located at a flat terrain and above the flood level of the region.

1.5 Will the proposal involve alteration of natural drainage systems? (Give details on a contour map showing the natural drainage near the proposed project site)

Ans: The level of the land is at par with the existing road level. Very little undulations while no significant contours were observed. The piece of land can safely be designated as flat land. However during excavation and piling the site level will automatically be elevated. The survey plan of the site is given in Annexure – 1.5.

1.6 What are the quantities of earthwork involved in the construction activity-cutting, filling, reclamation etc. (Give details of the quantities of earthwork involved, transport of fill materials from outside the site etc.)

Ans: The quantity of earthwork involved in different construction activities are as follows: Earthwork in excavation = 25000.0 cu.m (approx.). Excavated earthwork will be reused for site grading and the surplus volume, if any, will be disposed to B.M.C. waste collection department. The top soil will be excavated separately and reused for landscaping.

1.7 Give details regarding water supply, waste handling etc. during construction period.

Ans: During construction period, required water will be 18 kLd which will be made available by municipal

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supply from Bidhannagar Municipal Corporation. Construction waste will partially be reused for land development activities and the rest volume will be disposed to B.M.C. waste collection department.

1.8 Will the low lying areas & wetlands get altered? (Provide details of how low lying and wetlands are getting modified from the proposed activity)

Ans: No appreciable contour was observed during site inspection. Only very few slight undulations were observed. Hence the piece of land can be safely designated as flat land. No wetland was found in and around the project site. Therefore, no possibility of any low lying area or wetland getting modified as a result of the proposed development.

1.9 Whether construction debris & waste during construction cause health hazard? (Give quantities of various types of wastes generated during construction including the construction labour and the means of disposal)

Ans: As already stated, there is no existing structure located within the project site that will be demolished. Hence no demolition waste will be generated. During the excavation for foundation, around 25000 cu.m of earth is expected to be removed. The top soil will be preserved and utilized for landscaping. Remaining volume of earth will be utilized in site leveling. Effective material management and environmental management measures will be adopted in order to minimize the volume of construction waste. It is difficult to quantify the volume of construction & demolition waste because of the following factors: • Phasing of construction activities • Skilled workmanship • Recycling of such waste. However, from standard practice, different types of construction waste, which are likely to be generated, will vary from 2 to 5 % of material consumption. Concrete Waste and Cement Mortar Waste will be disposed off to the authorized agency of B.M.C. Brick Waste will be reused for preparation of sub-base of internal roads and pavements. The domestic waste from the working as well as residing labourers will also be generated, the volume of which has been preliminarily assessed as 30 kg/day. This waste will also be disposed to municipal waste collection department.

2. WATER ENVIRONMENT

2.1 Give the total quantity of water requirement for the proposed project with the breakup of requirements for various uses. How will the water requirement met? State the sources & quantities and furnish a water balance statement.

Ans: The total water requirement during both the construction and operational stages of the proposed project & the probable sources & quantities and water balance statement is furnished below: The water requirement for the proposed project can be divided into two stages: • Construction Stage • Operational Stage

i) Water Requirement at Construction Stage Water requirement for Concrete Work = 3100 kL Water requirement for Brickwork = 6580 kL Water requirement for Plastering = 4120 kL Water requirement for Flooring = 2680 kL Hence, total water requirement for above-stated construction activities is 16480 kL. Considering 10% of the above water required for site development activities, total water

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requirement for construction and site development is 18128 kL (approx.). Considering the total duration of construction period as 48 months i.e. 1460 working days; daily water requirement for construction activities is 12.42 kL say 13 kL. Apart from the construction activities, the labourers residing at the project site will also require water. It is assumed that there will be average 100 labourers working at a time at the project site and about 50% of them, i.e. 50 labourers on an average will be residing at the project site. Considering per capita water requirement as 70 litres per day for their household activities, daily water requirement under this head will be 3500 litres or 3.5 kLd. Water consumption for the non - resident labourers will be 50 x @30 lpcd = 1500 litres/day or 1.5 kLd. Therefore, during the construction phase, total daily water requirement will be 13.0 kLd + 3.5kLd + 1.5 kLd = 18.0 kLd.

ii) Water Requirement during Operational Stage

a) Domestic Consumption of = 186 kLd…………(i) Type of User Per capita Water No. of Users Water Consumption Consumption Residents 150 lpcd 1195 persons 179.25 kLd Residential Floating 15 lpcd 120 persons 1.8 kLd Service Staff 45 lpcd 50 persons 2.25 kLd Office Employee 45 lpcd 27 persons 1.22 kLd Shop Employee 45 lpcd 26 persons 1.17 kLd Total 1418 persons 185.69 say 186 kLd Out of 186 kLd, 1/3 rd volume i.e. 62 kLd will be consumed for toilet flushing, where treated wastewater will be reused. Thus, required freshwater will be (186-62) kLd = 124 kLd.

b) Water Reqd. for Car Cleaning = 2.00 kLd……(ii) Total car parks within the complex are 272, which might be cleaned. Considering 50% cars to be cleaned in a day and considering water consumption as 20 litre/car, water required for car cleaning will be 272X 20X 0.5 = 2.04 kLd, say 2 kLd.

c) Water consumption for landscaping = 26.00 kLd…………(iii) Total available Plot Area = 11869 sq.m i.e.1.19 Ha According to SEAC plantation guidelines, 20% of the land area should be reserved for tree plantation, i.e. 20% of 1.19 Ha = 0.237 Ha. Assuming 700 trees/Ha of land area, required no. of trees to be planted = 700 x 0.237 = 166.2 say 166 nos. Considering water consumption as 70 litres/tree (based on the evapo-transpiration rate as 6mm on average, irrigation efficiency as 85% and plant factor as 0.4) Water consumption by the trees is 166 X 70 litres = 11.6 kLd. Assuming water requirement for maintenance of semi paved and open parking area to be 5 lit/sq.m, water required will be 2750.6x 5 = 13.8 kLd. Therefore, total water requirement for landscaping will be (11.6 + 13.8) kLd = 25.4 say 26 kLd

d) Water Requirement for Internal road cleaning = 2kLd…………..(iv) Internal road area proposed for the development is the area under paved surface = 1491.46 sq.m Considering water consumption for internal road cleaning as 150 lit/ 100 sq.m , the water required for the said purpose will be = 2.2 say 2 kLd.

e) Water Requirement for Fire Fighting Static water demand for firefighting purpose will be according to the fire department’s recommendation. In this case, an underground water reservoir of recommended capacity will be provided for satisfying the requirement.

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Total Water Consumption = (186 + 2+ 26 +2) = 216 kLd (Water requirement for fire-fighting is not considered as it is a static demand)

SOURCES OF WATER SUPPLY The freshwater requirement will be available from municipal supply of B.M.C. The other sources are treated wastewater from S.T.P & rooftop rainwater during monsoon.

WATER BALANCE DURING OPERATIONAL STAGE Water balance for the proposed complex has been done in following way: Water Requirement for domestic purposes = 186 kLd (source : freshwater and tr. waste water) Water Requirement for car cleaning = 2 kLd (source : rooftop rainwater) Water Requirement for internal road cleaning = 2 kLd (source : treated waste water) Water Requirement for landscaping = 26 kLd (source : treated waste water) Total Water Requirement per day = 216 kLd (this quantity excludes the fire-fighting requirement, as that is a static demand) Net Freshwater Requirement = 124 kLd. Generated Wastewater from domestic activities = 148.5 say 149 kLd (80% of domestic water consumption of 186 kLd) Treated waste water to be generated = 133.7 say 134 kLd (90 % of generated wastewater) Available Rainwater from Rooftop = 7.7 kLd Rooftop rainwater to be used for Car Cleaning = 2.0 kLd Treated waste water to be used for Landscaping = 26.0 kLd Treated waste water to be used for internal road cleaning = 2.0 kLd Treated waste water to be used for Flushing = 62.0 kLd

In this project, wastewater treatment facilities will be provided. Generated wastewater will be treated, partially reused and the rest will be discharged into road side drain. The Water Balance Diagram is enclosed in Annexure – 2.1.

2.2 What is the capacity (dependable flow or yield) of the proposed source of water?

Ans: During the construction as well as operational phase, freshwater requirement will be met by Bidhannagar Municipal Corporation. However, in absence or inadequate municipal supply, groundwater will be abstracted with prior permission from the concerned authority. The geological set up of the region clearly indicates that groundwater occurs both under confined and unconfined conditions. Groundwater in the shallow zone occurs under unconfined i.e. under water table conditions while the same in the deeper granular zones occurs under confined conditions. During the post monsoon period, the depth to the water table is shallowest, ranging generally in depth from 2 to 3 m below the land surface. During the summer months, the water table, however, recedes to depths generally ranging between 4 to 5 m. The groundwater in deep aquifers (within 150m to 300m depth) occurs under confined conditions. The regional isopiezometric contour map suggests that the hydraulic gradient is 1:1600. Considering a flow path of 5 km an approximate estimate of groundwater flow through the section is around 1,900 cum per day. In Newtown, Rajarhat area, due to the presence of thick clay at the top the upper aquifer gives a semi confined character. There is a thick gray clay bed upto a depth of 10 m. From 10 to 42 m there are several layers of fine sand often mixed with clay. This is the upper low yielding aquifer of the area. Below this, there is a dark gray clay bed between 42 to 55 m. From 55 to 84 m there is a bed of fine sand. Below this, medium sand occur upto a depth of 100 m (16m thickness). Below this upto a depth of 135 m there is fine sand. The zone between 55 m and 135 m constitutes a potential aquifer in this area and most of the groundwater is withdrawn at this depth.

2.3 What is the quality of water required, in case, the supply is not from a municipal source? (Provide physical, chemical, biological characteristics with class of water quality)

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Ans: As already stated, required freshwater is expected to be available from municipal supply.

2.4 How much of the water requirement can be met from the recycling of treated wastewater? (Give the details of quantities, sources and usage)

Ans: During the operational stage, total daily water requirement of the proposed development is assessed as 216 kLd, out of which 186 kLd will be the domestic demand. The volume of generated wastewater will be around 80% of the domestic water demand i.e. 149 kLd, which will be treated in S.T.P. 134 KLd of treated wastewater will be generated from S.T.P. Out of this 90 kLd of treated wastewater will be reused for toilet flushing (62 kLd), landscaping (26 kLd) and road cleaning (2 kLd). The remaining part (44 kLd) will be discharged into drain lying along the abutting road.

2.5 Will there be diversion of water from the users? (Please assess the impacts of the project on other existing uses and quantities of consumption)

Ans: In the proposed project, there will not be diversion of water from the users.

2.6 What is the incremental pollution load from wastewater generated from the proposed activity? (Give details of the quantities and composition of wastewater generated from the proposed activity)

Ans: During the operational stage of the proposed project, the average daily domestic demand of water will be 186 kLd. Therefore, generated wastewater will be in the tune of around 149 kLd (80% of water consumption). Expected composition of raw wastewater (as per CPHEEO manual) are listed below: Expected Wastewater Quality Parameter Raw Wastewater Quality pH 6.5 – 7.5 BOD (in mg/l) 200 COD (in mg/l) 350 TSS (in mg/l) 150 – 250 Oil & Grease (in mg/l) 15 – 20

Thus, from the above table, it can be mentioned that the treated discharge is within the permissible limit and hence will not impose additional incremental pollution load.

2.7 Give details of the water requirements met from water harvesting? Furnish details of the facilities created.

Ans: As per the SEAC Guidelines, West Bengal for rainwater harvesting, method of storing rainwater does not include the collection of rainwater from ground surface. The runoff from the ground surface will be channeled through the storm water drains and finally discharged into the road side drain. Only the rooftop rainwater will be harvested. The expected availability has been assessed and mentioned below: According to the guidelines, RWH potential in 1000 sqm Roof Area is considered to be 7,68,000 litres and the storage facility to be created from 1000 sq.m Roof Area is 3 lacs litre (for 10 to 15 storied buildings & above),2.5 lacs litres (6 to 10 storied buildings) and 1.5 lacs (for 3-5 storied buildings) respectively. In our project, the residential building blocks 1 to 6 are 10 storied (G+9). Available roof area of residential blocks for collection of rainwater is = 3699.3 sq.m Thus, available rooftop rainwater for storage is 3699.3 X 2,50,000/1000 litres = 924825 litres/annum or 925 kL/annum. Considering the duration of monsoon as 120 days in a year, daily available rooftop rainwater during monsoon is 925/120 = 7.7 kLd. Out of 7.7 kLd, 2 kLd of the collected rooftop rainwater will be used for car cleaning. Remaining 5.7

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kLd will be stored in the rainwater storage/collection tank. However during the monsoon total volume of surplus rainwater that may be collected is 120 x 5.7 kLD= 684 kL.

Our proposal – for the project, 2 collection reservoirs will be constructed having a capacity of 100 kl each. Total roof top rainwater to be stored is 200 kl. Rest 484 kl will be diverted to the recharge pit. Note – block 7, club block and commercial block has not been considered for rainwater harvesting as they will have regular public access and roof top water will not be suitable for harvesting purpose.

RAINWATER RECHARGE WELL CAPACITY ASSESSMENT Rooftop rainwater will first be collected into the recharge wells and the overflow from the recharge wells will be diverted to the BMC storm line outside the site. Volume of rainwater to be recharged through recharge wells is [(7,68,000 X 3699.3 /1000) X 45%] = 1278478 litres/annum or 1278kL/annum. Moreover, considering the additional recharge of 484 kL, total volume of rainwater to be recharged is (1278 + 484) kL/annum = 1762 kL/annum. Considering the monsoon period as 120 days, daily average recharge volume available is 1762/120 = 14.7 kLd say 15 kLd. Hence we propose 2 recharge wells which can provide recharge up to 12 kLD in total. RWH recharge structure schematic drawing is enclosed in Annexure 2.7.

2.8 What would be the impact of the landuse changes occurring due to the proposed project on the runoff characteristics (quantitative as well as qualitative) of the area in the post construction phase on a long term basis? Would it aggravate the problems of flooding or water logging in any way?

Ans: Land is presently vacant. Therefore, the runoff characteristic is assumed in the range of 0.2. After the execution of the project, 39.58 % of the plot area will be covered by building blocks and around 24.15 % of the open area will be hard surface. More than 1/3rd of the available land will be developed hence the resultant runoff characteristic will change to 0.75 on an average. Therefore, it can be said that the runoff characteristic of the project site will increase marginally after execution of the project. The quantified difference of runoff at the project site during the preconstruction and post- construction stage is obtained from the following Runoff-Rainfall Intensity Relationship equation: Q = 10 C i A Where Q = runoff in m3/hr, C = coefficient of run-off i = intensity of rainfall in mm/hr and A = area of drainage district in hectare During the pre-construction stage, following considerations are taken: C = 0.2 i = 40 mm/hr A = 11869 sq.m = 1.19 Ha Therefore, during the preconstruction stage, runoff (Q) will be in the tune of: Q = 10 [0.2X 40 X 1.19] m3/hr = 94.95 say 95 m3/hr During the post-construction stage, following considerations are taken: C = 0.75 i = 40 mm/hr A = 11869 sq.m = 1.19 Ha Therefore, during the preconstruction stage, runoff (Q) will be in the tune of: Q = 10[0.75 X 40 X 1.19] m3/hr = 356.07 say 356 m3/hr Thus, the surface run-off of the project site will increase by 261 m3/hr during the peak rainfall period. However, this volume includes the rooftop runoff as well, which will be harvested. The remaining volume will flow through the storm water drain to the BMC storm line. To avoid water logging problem inside the project site, adequate measures will be adopted while designing the stormwater drainage network and drain sections to accommodate the peak runoff.

2.9 What are the impacts of the proposal on the ground water? (Will there be tapping of ground water;

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give the details of ground water table, recharging capacity, and approvals obtained from competent authority, if any)

Ans: The water requirement during the construction as well as post-construction stage for the proposed complex is expected to be met from the municipal supply. Moreover, rooftop rainwater will be reused for secondary purposes, which will minimize the freshwater requirement. Thus, there will not be any adverse impact on groundwater. Kolkata is underlain by Quaternary Sediments consisting of a sequence of alteration of clay, silty clay, sand and sand mixed with occasional clay. Clay horizon ranging in thickness of 30-50m occurs at the top of the sedimentary sequence. This clay is underlain by a granular zone made up of sand of different sizes with occasional gravel and this forms the aquifer. The principal productive aquifer generally occurs within the depth range of 40-100m in the north, 50-160m in the central and southern parts of the city. A minor aquifer consisting of fine to medium has also been found to exist in some parts within the depth range of 20-40m. The value of transmissivity varies from 1700 - 5200 m³/day. The depth of groundwater level ranges from 3.34 m to 16.32 m bgl in the pre-monsoon period and from 1.57m to 15.71m bgl in the post-monsoon period. Study reveals that water level in the confined aquifer in the city area has declined around 5-9m in the last 40 years. The chloride concentration in groundwater is above 500ppm in the northern and western parts of the city, 250- 500ppm in the area between Belgachia and Park Street and within 250 ppm in Garia-Jadavpur area. As regards the deeper aquifers, consequent to withdrawal of 1000-1500 cum per day of groundwater, there would certainly be a marginal change in the groundwater scenario of the deeper aquifers. The capability of the recharge and recharge-discharge relationship of the aquifer systems may control the seasonal flow of groundwater to a great extent.

2.10 What precautions/measures are taken to prevent the run-off from construction activities polluting land & aquifers? (Give details of quantities and the measures taken to avoid the adverse impacts)

Ans: The precautions/measure to be taken to prevent the run-off from construction activities are mentioned in the Environmental Management Plan, enclosed. However, broadly it can be mentioned that the no construction wastewater will be discharged directly into the land and stormwater drain. Few numbers of Sediment trap of sizes 2.5m(L) X 2.5m(W) X 0.75m (D) and retention period of half an hour will be constructed during the construction stage, where all construction wastewater will be discharged. After the sedimentation of the construction wastewater, the comparatively cleaner water will be partially reused and the rest part will be discharged into the roadside drain.

2.11 How is the storm water from within the site managed? (State the provisions made to avoid flooding of the area, details of the drainage facilities provided along with a site layout indication contour levels)

Ans: During the post-construction stages, the storm water will be collected into the surface drainage network inside the campus. The drain sizes and sections will be designed in such a way that they can take the load of the peak rainfall period. All the surface drains will be covered by gratings to avoid the litter and other inert waste. Proper land gradient will be provided so that water logging inside the campus does not occur. The collected storm water from the building roofs during the rainfall period will be stored. To reduce the surface runoff and subsequent increase in infiltration of rainwater, attempts will be made to maximize the green surface inside the campus. Adequate number of trees will also be planted. As the site is located in flat terrain, appreciable slope is not observed within the project site. Moreover, proper land grading will be provided so that the slope of the modified ground level remains similar with the natural slope of the site. Service and drainage & sewerage layout plan is enclosed in Annexure- 2.11.

2.12 Will there be deployment of construction labourers particularly in the peak period lead to unsanitary

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conditions around the project site (Justify with proper explanation)

Ans: Proper on-site sanitation facilities will be provided for the construction labourers so as to avoid defecation in and around project site. Few numbers of toilets comprising latrine, bath, hand - wash facilities will be constructed inside the project site. Generated domestic wastewater from construction labourers will be connected to road side drain. Moreover, adequate water supply for drinking and other domestic uses will also be provided during the construction stage of the project. Therefore, it can be presumed that there will not be any deployment of construction labourer during the construction stage of the project.

2.13 What on-site facilities are provided for the collection, treatment & safe disposal of sewage? (Give details of the quantities of wastewater generation, treatment capacities with technology & facilities for recycling and disposal)

Ans: Wastewater treatment facility will be provided inside the complex. Generated wastewater will be reused for secondary purposes and remaining discharged into BMC drain. Water Consumption for Domestic Purposes : 186 kLd Generated wastewater : 149 kLd (80% of water consumption) Treated wastewater: 134 kLd (90% of wastewater) Treated wastewater to be reused : 90kLd Treated wastewater to be discharged into road side drain : (134 – 90) kLd = 44 kLd.

The proposed sewage treatment plant will be of Activated Sludge type with extended aeration. It envisages collection of all the sewage water through a network of conduit with battery of inspection chambers and manholes and taken into a raw sewage water collection sump / equalization tank through a bar screen chamber. The equalization tank will have a retention capacity of approximately 4-6 hrs. Sewage from this tank will be constantly pumped into Aeration tank using effluent transfer pumps to achieve continuous re-circulation arrangement of the contents of the equalization tank. The aeration tank will have a detention time varying from 16 to 36 hours for continuous aeration. Aerated waste will be allowed to settle in a secondary settling tank and overflow will be let into semi treated effluent sump. The sludge will be partly fed back to aeration tank by pumping and the remaining sludge pass through sludge handling system consisting of automatic filter press, sludge thickener, dry cake handling equipment polyelectrolyte dosing for disposal. Dried cake will be removed and used as manure for plants. From semi treated water collection sump, water will be pumped through activated carbon filter, pressure sand filter and pumped and stored in a treated water tank used for landscaping and flushing after disinfection. From this tank, treated water will be used for landscaping and flushing purpose. The final quality of the treated waste water will meet the norms stipulated by the West Bengal Pollution Control Board. Flow diagram of S.T.P is enclosed as Annexure - 2.13

2.14 Give details of dual plumbing system if treated waste used for flushing of toilets or any other use.

Ans: Dual Plumbing System will be installed in this project, as wastewater treatment facility has been proposed for the project. Treated wastewater will be reused for toilet flushing and other secondary purposes. Treated wastewater reused for flushing is 62 kLd while for Landscaping is 26 kLd and road cleaning is 2 kLd.

3. VEGETATION

3.1 Is there any threat of the project to the bio-diversity? (Give a description of the local ecosystem with its unique features, if any)

Ans: No. The project will not pose any major threat to the bio-diversity of the locality. Project site has 9 existing trees, which will be retained to the extent possible. If required to be felled, it will be done as

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per norms and with due permission. Moreover, quite a number of trees are also going to be planted during the later period of the construction stage. The species will be predominantly native in nature so that they merge with the local ecosystem. The description of the local plants is enclosed in Annexure-3.1.

3.2 Will the construction involve extensive clearing or modification of vegetation? (Provide a detailed account of the trees & vegetation affected by the project)

Ans: Project site has 9 existing trees at present which will be retained to the extent possible. More trees will be planted in the later part of the project. So there will not be a major modification of existing vegetation.

3.3 What are the measures proposed to be taken to minimize the likely impacts on important site features (Give details of proposal for tree plantation, landscaping, creation or water bodies etc along with a layout plan to an appropriate scale)

Ans: Adequate measures will be taken to minimize the likely impacts of the proposed project on the surrounding as well as the project site itself and it is documented in the Environmental Management Plan. The landscaping and plantation programme and species details are shown in the landscape plan which is enclosed in Annexure-3.3. Around 166 trees will be planted as per plantation plan. This will include flowering and fruit bearing trees along the boundaries. Mostly native species will be planted. Decorative trees and hedges will be provided along pedestrian pathways.

4. FAUNA

4.1 Is there likely to be any displacement of fauna-both terrestrial and aquatic or creation of barriers for their movement? Prove the details.

Ans: No scope of displacement of aquatic or terrestrial fauna is involved due to the proposed construction.

4.2 Any direct or indirect impacts on the avifauna of the area? Provide details.

Ans: While surveying the proposed project site, it was found that the land was covered with few trees within the boundary wall. Hence, the probability of displacement of avifauna is negligible. However, in operational stage as planted trees will mature, they will become abode of many birds from the surrounding. Thus, we expect influx of birds in due course of time. Therefore, a positive impact is expected.

4.3 Prescribe measures such as corridors, fish ladders etc to mitigate adverse impacts on fauna.

Ans: There will not be any adverse impact on fauna due to proposed project.

5. AIR ENVIRONMENT

5.1 Will the project increase atmospheric concentration of gases & result in heat islands? (Give details of background air quality levels with predicted values based on dispersion models taking into account the increased traffic generation as a result of the proposed constructions)

Ans: During the operational stage, the proposed complex will not generate any emission of dust, fumes or gas so that the atmospheric concentration of polluting agents increase. However, as there will be a few numbers of buildings, there might remain a possibility of slight increase in heat island

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effect, which can be mitigated in the following ways: i) Judicial layout of building blocks within the complex The building block within the complex is laid in such a manner that there remains sufficient amount of external as well as internal open space between the blocks so that the air movement does not get interrupted. ii) Reducing the footprint of building blocks Only 39.58 % of the land area will be occupied by building blocks. Thus, 60.42 % of the land area will remain as open space (mostly green). Therefore, much lesser heat gain will be over the green surface. iii) Selection of Building Materials The building materials will be selected in such a way that the solar heat gain over the vertical surface and roof is minimized. iv) Trees and Vegetation Sufficient number of shading trees will be planted inside the project site to reduce the air temperature within the project site and surroundings. v) Reduction in Hard Surface Hard surface in the form of metallic road will be kept minimum. The pavements will be of porous and light coloured material and open joints.

The ambient air quality in and around the project site reveals that average SPM and RPM concentration ranges from 216.5 µg/m3 to 238.6 µg/m3 and 110.5 µg/m3 to 120.8 µg/m3 3 3 respectively. The concentration of SOx and NOx ranges from 7.20 µg/m to 7.80 µg/m and 35.0 µg/m3 to 36.5 µg/m3 respectively. This reveals that the concentration of particulate matter is slightly higher than that the respective standards, which might be from the ongoing traffic flow in the locality. The concentration of gaseous emission is well within the respective standard. As there will not be any emission generating activity during the operational phase of the complex, there will not be any continuous source of emission and thus the ambient air quality will not be affected. The traffic volume and movement also will be controlled within the complex.

5.2 What are the impacts on generation of dust, smoke, odorous fumes or other hazardous gases? Give details in relation to all the meteorological parameters.

Ans: During the operational stage of the project, there will not be any such activity which can generate dust, smoke, odorous fumes or other hazardous gas. The proposed project is residential cum commercial complex. Only 1 X 500 kW DG set might generate little smoke which will be controlled at source.

5.3 Will the proposal create shortage of parking space for vehicles? Furnish details of the present level of transport infrastructure & measures proposed for improvement including traffic management at the entry & exit to the project site.

Ans: Car Parking Calculation for Residential Complex: Car Parking Calculation following Bengal Municipal Bldg rules 2007, Total Residential Area = 33109.011 sq.m Car parking space (@130 sq.m/1 car = 254.6 nos. say 254 nos. Total Mercantile Area = 1411.615 sqm. Car parking space (@100 sq.m/1car = 14.1 nos. say 14 nos. Total car parking required 254 + 14 = 268 nos. Proposed car parking = 272 Nos. (gr. fl. Covered = 123, Open = 43, basement = 106).

The project site is well connected to network of roads leading from various parts of the city. The increase in traffic due to the project is marginal and therefore the impact will be marginal. Internal roads will be provided within the complex.

5.4 Provide details of the movement patterns with internal roads, bicycles tracks, pedestrian pathways,

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footpaths etc., with areas under each category.

Ans: Around 12.56 % of the land area (1491.46 sq.m) will be developed as metallic road, 19.74 % of land area (2342.89 sq.m) will be developed as semi paved surface to be utilized as driveway, while 3.44 % of the land area 9407.71 sqm.) will be developed for parking. There will not be any separate bicycle tracks, pedestrian pathway or footpath. A copy of circulation plan within the project site is enclosed in Annexure 5.4.

5.5 Will there be significant increase in traffic noise & vibrations? Give details of the sources and the measures proposed for mitigation of the above.

Ans: No. As the complex will be partly residential and partly commercial in nature, adequate attention has been paid while designing the site layout. The residential block is laid at the rear part of the project site while commercial block is located in the front road facing side of the plot. Designated parking area for residents, office and shop employees will be kept. Only the vehicle of the residents, employees and service vehicles will be allowed to enter the site. Also, no scope of heavy traffic movement is involved inside except in emergency and the speed limit of the vehicles will be controlled. Visitor’s car movement will be restricted within the complex. Therefore, there will not be any significant increase in traffic noise and vibration within the complex.

Day time equivalent noise levels (Leq) in the locality is between 56.28 dB(A) to 62.50 dB(A). Night time equivalent noise levels (Leq) is 52.10 dB(A) to 58.23 dB(A). The values are little higher than the respective permissible limit, which is due to the traffic movement along the abutting road. To reduce the impact of generated noise, tree with dense foliage along the roadside boundaries of the project site will be planted.

5.6 What will be the impact of DG sets & other equipment noise levels & vibrations in & ambient air quality around the project site? Provide details.

Ans: Impacts on Air Quality due to DG Sets: Impacts: • Impacts on ambient air during operation phase would be due to emissions from the stacks attached to standby DG set only during grid power failure. Mitigation Measures • Back up DG sets will comply with the applicable emission norms. • D.G. Sets will be silent type and proper acoustic enclosure will be provided. • Adequate stack height for DG sets will be provided as per norms. • Back up DG sets will be used only during power failure. • Periodic monitoring of emissions from DG sets will be carried out as per norms.

6. AESTHETICS

6.1 Will the proposed constructions in any way result in the obstruction of a view, scenic amenity or landscapes? Are these considerations taken into account by the proponents?

Ans: The maximum height of the building blocks of the proposed project will be 33.0 m from G.L. Adequate open spaces according to the municipal building rules will be provided. Sufficient inter building open spaces will also be kept so that the natural daylight, air movement as well as scenic view does not get disturbed.

6.2 Will there be any adverse impacts from new constructions on the existing structures? What are the considerations taken into account by the proponents?

Ans: No. The new construction will be confined within the project site only. Sufficient external open

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spaces will be provided on all sides of the project site. Moreover, precautionary measures will be adopted while excavating foundation or erecting superstructures by erecting vertical shoring to avoid landslide or soil erosion. It will also help to protect the structural stability of the surrounding existing structures. All the construction materials will be stored within the project site itself. Around 200 sqm area will be provided for stacking of construction materials. The stacking area will be fully covered to prevent spreading of dust. No construction materials or waste will be dumped outside the project boundary or along the abutting roads. Thus, there remains no chance of traffic closure or diversion, due to the proposed construction. Construction activities will be carried on during the day time only. Construction Wastes will be disposed properly by covering it with polythene sheets.

6.3 Whether there are any local considerations or urban form & urban design influencing the design criteria? They may be explicitly spelt out.

Ans: The development of the entire project will abide by the local building rules and regulations set by the regulatory authority of the area. The urban form and urban design of the proposed project will be influenced by the local consideration and simultaneously most contemporary from aesthetic and users point of view.

6.4 Are there any anthropological or archaeological sites or artifacts nearby? State if any other significant features in the vicinity of the proposed site have been considered.

Ans: No anthropological or archaeological sites or artifacts are located nearby.

7. SOCIO-ECONOMIC ASPECTS

7.1 Will the proposal result in any changes to the demographic structure of local population? Provide the details.

Ans: Little change in the local demographic structure is envisaged for the project, as around 1195 persons are expected to reside within the complex.

7.2 Give details of the existing social infrastructure around the proposed project.

Ans: The project site falls in Ward No.- 12 of Bidhannagar Kolkata Municipal Corporation area. It is located in the North 24 Paraganas , West Bengal. It has quite a number of hospitals, private nursing homes and medicine shops that caters the local population. Rajarhat – Gopalpur Municipality Hospital, Physio Rehab Group of Hospitals, Bliss Nursing Home, Kolkata Nursing Home, Charnock Hospital, Apollo Pharmacy etc. are within a radius of 2 km. Besides, a large number of Private clinics, Diagnostic Centres and Medicine shops have been established. As far as the education facilities are concerned, large number of private and public educational institutions are there to cater the needs of local residents. Derozio college (around 1.5 km), Atghara Prathamik Vidyalaya, North Point Senior Secondary School, Tree House Pre-school, Delhi Public School, Newtown, Delhi Public School, Megacity etc. As the landuse area around the project site is predominantly residential, local daily need markets are already present that caters the local residents. Also, City Centre 2 is just a km away from the project site.

7.3 Will the project cause adverse effects on local communities, disturbance to sacred sites or other cultural values? What are the safeguards proposed?

Ans: The project will not cause any adverse effects on local community during the construction or operational stage. No sacred site is located surrounding the project site. Construction activities will not cause any harm to the local habitants in terms of emission, waste generation, effluent

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generation, noise etc. During the operational phase also, the generated wastewater and solid waste from the complex will be properly managed so that the local community as well as the existing physical infrastructure doesn’t feels the stress. The safeguards are mentioned in the Environmental Management Plan.

8. BUILDING MATERIALS

8.1 May involve the use of building materials with high-embodied energy. Are the construction materials produced with energy efficient processes? (Give details of energy conservation measures in the selection of building materials and their energy efficiency)

Ans: Construction of the project will be done with conventional building material. Energy conservation measures of different building materials and structural components are described below: The external wall of the building blocks will be constructed with 250mm thick double brick layer, both side plastered (expected U-value = 0.44 W/m2-°C) The roofs of the building blocks will be constructed with typical 100-150mm thick R.C.C. slab with cement screed and clay tiles (expected U-value = 0.797 W/m2-°C) Glass panes will be 4mm to 6mm thick depending upon the exposure of the surface to the sun. In some of the areas of building façade, double glazing with reflective coating might also be used. Expected U-values of single glazing clear glass are 3.3 W/m2-°C. Paving materials will be light coloured and porous. The pavement might be of open jointed paver blocks partially depending upon the landscaping scheme.

8.2 Transport and handling of materials during construction may result in pollution, noise & public nuisance. What measures are taken to minimize the impacts?

Ans: All building materials carrying vehicles will be covered with tarpaulin or polythene sheets to avoid spreading of dust and dirt. Separate raw material handling yard will be made. Cement will be separately stored under cover in bales. Sand will be stacked neatly under tarpaulin cover. Bricks and steel will be laid in open. All material transportation will be done during the daytime only. Raw material handling yard will be located within the project site and separated by enclosures.

8.3 Are recycled materials used in roads and structures? State the extent of savings achieved?

Ans: Yes. Recycled materials may be used in roads and land development activities. Depending upon the situation, 10 to 15% savings may be achieved by using recycled materials.

8.4 Give details of the methods of collection, segregation & disposal of the garbage generated during the operation phases of the project.

Ans: Volume of solid waste is 0.71 tonne/day. The breakup of daily generated solid waste during the operational phase is given below: Per Capita Solid Waste No. Of Users Solid Waste Type Of User Generation (kg/cap/day) (Persons) Generation (kg/day) Residential 0.5 1195 597.5 Residential Floating 0.1 120 12.0 Service Staff 0.3 50 15.0 Office Employee 0.3 27 8.10 Shop Employee 0.3 26 7.8 Site Maintenance 0.05 1418 70.90 Total 711.3 say 711 kg/day or 0.71 tonne/day

The collection and disposal method of generated solid waste is given below:

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• No indiscriminate disposal of garbage should be allowed within the complex. A proper waste collection system is to be implemented. • Waste will be segregated at source. To facilitate this, a multi-bin system will be provided for storing bio-degradable waste as food leftovers, vegetable and fruit peels, non-biodegradable waste such as metal scrap, rubber and recyclable wastes such as papers and plastics. These bins will be in different colors to facilitate the disposal. • Organic part of the waste will be composted in an on-site mechanical compost plant. • For apartments, House to House garbage collection system will be adopted. • Waste from yard and garden should be collected into the small handcarts by the sweeper and transported to the common waste bin. • Garbage collection procedure is to be conducted during the early morning hours in a day. • Accumulation of garbage in the storage bin will be avoided for more than 24 hours and collected garbage will be disposed off daily through municipal garbage disposal system. • Waste storage bin size will be adequate to accommodate at least two days solid waste. • To avoid the dumping of garbage along the roads, parks, common areas, few number of solid waste storage bins have to be placed in strategic location.

9. ENERGY CONSERVATION

9.1 Give details of the power requirements, source of supply, backup source etc. What is the energy consumption assumed per square foot of built-up area? How have you tried to minimize energy consumption?

Ans: During the operational phase of the project, power requirement will be around 1200 kW. The source of power supply will be WBSEDCL. Energy consumption has been preliminarily assumed as 10W/m2 for residential apartments, 5W/m2 for Community area and 2W/m2 for service area. Following measures will be adopted to minimize the energy consumption: Energy Efficient Features: LED lighting fixtures in the common areas Truelite fluorescent lamps/CFL in apartments Roof-top thermal insulation Appropriate design to shut out excess heat and gain loss Use of solar energy in external lighting Maximum utilization of natural light for residential apartments

9.2 What type of, and capacity of, power back-up to you plan to provide?

Ans: 1 X 500 kW DG set will be installed to provide the back-up, in case of power failure.

9.3 What are the characteristics of the glass you plan to use? Provide specifications of its characteristics related to both short wave and long wave radiation?

Ans: Tinted or clear glass has been preliminarily planned for use in window panes of the apartments. Thickness will vary from 4mm to 6mm depending upon the situation. Main objective of the glass will be to cut the glare, to ensure clear visibility and allowance of maximum natural light.

9.4 What passive solar architectural features are being used in the building? Illustrate the applications made in the proposed project.

Ans: The building blocks will have vertical and horizontal sun shading protection in the form of fins and chajjas. The design, vertical or horizontal projection of those sun shading devices will be dependent upon the exposure of a particular surface to the sun. 9.5 Does the layout of streets & buildings maximize the potential for solar energy devices? Have you

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considered the use of street lighting, emergency lighting and solar hot water systems for use in the building complex? Substantiate with details.

Ans: This is a residential cum commercial complex and there will be sufficient organized as well as incidental open spaces in and around the building blocks. The said open spaces will be developed as park, garden, lawn, play area etc.; which will be illuminated by solar illumination.

9.6 Is shading effectively used to reduce cooling/heating loads? What principles have been used to maximize the shading of Walls on the East and West and the Roof? How much energy saving has been effected?

Ans: Yes. The shading devices of the building block will be designed in such a way that it cuts the glare but allow maximum amount of diffused sunlight. Also, the roofs of the building block will have adequate thermal insulation.

9.7 Do the structures use energy-efficient space conditioning, lighting and mechanical systems? Provide technical details. Provide details of the transformers and motor efficiencies, lighting intensity and air-conditioning load assumption? Are you using CFC and HCFC free chillers? Provide specifications.

Ans: For residential apartments prime importance is given on natural wind circulation and illumination. Keeping that in mind, most of the exterior glazing of the building blocks will be openable type. Thus, open window area within the building will be maximum. Thus, scope of air infiltration through the glazed windows is also maximum. It is expected that air leakage through entrance doors and open able windows (in closed condition) will not exceed 5.0 l/s-m2.

9.8 What are the likely effects of the building activity in altering the micro-climate? Provide a self assessment on the likely impacts of the proposed construction on creation of heat island & inversion effects?

Ans: The proposed construction will not alter the micro-climate of the project site and surroundings significantly. Also, it will not have appreciable impact on creation of heat island and inversion effect due to the following reasons: i) Judicial layout of building blocks within the complex The building block within the complex is laid in such a manner that there remains sufficient amount of external as well as internal open space between the blocks so that the air movement does not get interrupted. ii) Reducing the footprint of building blocks Only 39 % of the land area will be occupied by building blocks. Thus, 61 % of the land area will remain as open space (mostly green). Therefore, much lesser heat gain will be over the green surface. iii) Selection of Building Materials The building materials will be selected in such a way that the solar heat gain over the vertical surface and roof is minimized. iv) Trees and Vegetation Sufficient number of shading trees will be planted inside the project site to reduce the air temperature within the project site and surroundings. v) Reduction in Hard Surface Hard surface in the form of metallic road will be minimum. The color of external surfaces of the building blocks will be of lighter shade. The pavements will be of porous and light colored material and will have open joints.

9.9 What are the thermal characteristics of the building envelope? (a) roof, (b) external walls; and(c) fenestration? Give details of the material used and the U-values or the R values of the individual components.

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Ans: The U and R values of different components to be used in the project, i.e., glass, wall and roof, are as given in the table below: S.No. Component U-Value R-Value 1 Glass Façade 3.3W/ms-°C -- 2 External Wall 0.44 W/m2-°C -- 3 Roof 0.797 W/m2-°C --

9.10 What precautions & safety measures are proposed against fire hazards? Furnish details of emergency plans.

Ans: Proposed project has already applied for obtaining the statutory NOC from fire department. Recommended measures by the said authority will be followed during the operational phase of the project. However, following basic precautions & safety measures have been proposed; The staircases of the building will be enclosed types. The staircases will be extended upto the terrace level of the buildings. Walls of the lift enclosures will be at least two hours fire resisting types. Adequate refuge area will be provided at the external walls of the buildings Underground water reservoirs with adequate storage capacities, as recommended by the statutory authority, will be constructed. Public address systems will be linked between all the floors of the building and the control room First aid fire fighting arrangement in the style of placing suitable types of portable fire extinguishers, fire-buckets etc. in all floors of the buildings will be provided. Floor numbers and directional sign of escape route shall be displayed prominently in all floors of the respective building. Internal road will be sufficiently strong to withstand the load of fire tender.

9.11 If you are using glass as wall material provides details and specifications including emissivity and thermal characteristics.

Ans: Glass will not be used as wall material, as preliminarily assessed.

9.12 What is the rate of air infiltration into the building? Provide details of how you are mitigating the effects of infiltration

Ans: For residential apartments prime importance is given to natural wind circulation and illumination aspect. Moreover, as the complex has substantial open space, incoming breeze is considered as a treasure to the residents of the complex. Keeping that in mind, most of the exterior glazing of the proposed building blocks will be open able type. Thus, open window area within the building will be maximum. Thus, scope of air infiltration through the glazed windows will also be maximum. It is expected that air leakage through entrance doors and open able windows (in closed condition) will not exceed 5.0 l/s-m2.

9.13 To what extent the non-conventional energy technologies are utilized in the overall energy consumption? Provide details of the renewable energy technologies used.

Ans: Solar energy will be used for internal road illumination, as already stated. Solar lighting calculation is given below: Following the SEAC recommendation, 1% total connected electricity load will be catered by solar power. Solar energy will be used for internal road & open parking area illumination as well as for partial common area illumination.

Solar lighting calculation is given below:

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In our design proposal, internal road area and semi – paved area is 3834.356 sq.m. Considering street lighting load as 2.5 Watt/sq.m or 0.23 Watt/sq.ft (as per Indian Green Building Council Manual), Required lighting load = 3834.356 X2.5 = 9585.89 Watt say 9586 W. Considering diversity factor = 0.80, required lighting load is 9586 X 0.8 = 7668.8 say 7669 watt i.e. 7.7 kW. Considering power requirement of each street light as 0.15 kW, number of street light fixture required 7.7 / 0.15 = 51.3 say 51 nos.

50% of Total Street light fixture to be catered with LED lamps to be catered by solar power. Thus, total number of solar street lighting fixture to be provided is 51 X 50% = 25.5 say 25 nos. Solar Power will also be used for partial common area illumination is given below;

In our project, total connected load as preliminarily assessed is 1200 kW.

Total solar energy to be harvest as per SEAC recommendation is 1% of total connected load i.e. 1200 kW X 1% = 12 kW.

Out of 12 kW, 3.85 kW (7.7/2) is being used as outdoor solar illumination. Thus, rest (12 – 3.85)kW i.e 8.15 kW of Solar Energy will be used for partial common area illumination.

10. ENVIRONMENT MANAGEMENT PLAN

Ans: Enclosed in Annexure-10.0.

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