Details of Project. Total Population During Construction 325 persons Total Population During Operation 2120 persons (permanent , temporary- 630)

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1 Details of Project The project proponent wants to develop a Residential Complex with all modern amenities at 037, Chanditala Main Road, Under KMC, Ward No. 116, Borough No. XIII, Mouza Siriti, J.L. No. 11, R.S. Dag No. 81, 82, 114, 81/1092 & 113/528, R.S. Khatian No. 566, 586 & 344, P.S. Behala, Kolkata The project site is a flat land of Land Area = sqm There will be construction of a Residential complex with sqm total built up area. Total Land Area sqm Total Built Up Area sqm Ground Coverage sqm (28.79%) No. of & Story No. of Dwelling units Source of Water Total Quantum of Water required Quantity of Wastewater Generation Quantity of treated wastewater recycled Quantity of treated wastewater Discharge Quantum of Fresh Water required Quantity of Solid Waste Generation Constructional Phase Water Demand A - (G+10), B (B+G+10), C (B+G+11), D (G+11) with Community hall, Games Room, Gym, Swimming pool etc. 331 nos. KMC 301 kld 213 kld 107 kld 106 kld 194 kld 795 kg/day 27 kld (Construction work 4 kld, Workers 23 kld) Total Population During Construction 325 persons Total Population During Operation 2120 persons (permanent , temporary- 630) Electricity Load 2110 kva Electricity Supplied By CESC D.G.Sets 2 nos. 500 kva & 1 no. 200 kva Fuel (diesel) Required for D.G.Sets 192 litre/hr. Stack Height for D.G.Sets 4.5 mt. for each 500 kva & 2.8 mt. for each 200 kva Car Parking required 289 nos. Car Parking provided No. of trees provided 353 nos. 200 Nos. Water Supply, Wastewater Generation, Recycling and Discharge Daily water demand of the proposed project during operation phase will be 301 kld. Out of the total water demand 194 kld will be the fresh water demand and rest 107 kld (Landscaping - 26 Kld; Car Washing - 14 kld; Dual Flushing (Residential) 67 kld) will be recycled from treated wastewater. The total wastewater generated from this project during operational phase is around 213 kld. The wastewater will be collected through a well designed sewer network leading to STP. The STP will be based on FAB technology followed by tertiary treatment (PSF Pressure Sand Filter, ACF- Activated Carbon Filter and Disinfection by UV Radiation). Treated wastewater discharge to KMC drain kld. The fresh water will be provided by KMC. Page 1 of 9

2 Flat No. Occu. Rate Total popu. Lpcd Total litre/day Flats Community Hall Games room Gymnasium Service persons Floating Population Sub Total Landscaping 26 Car washing 14 Swimming pool 10 Losses 2 Sub Total 2 52 TOTAL WATER REQUIREMENT 301 Total Wastewater Generation 213 Total Wastewater discharge 106 Total Recycling 107 Landscaping 26 Car washing 14 Flushing 67 Fresh Water Requirement 194 OCCUPANCY RATE NBC 2005, -(I) DEVELOPMENT CONTROL RULES AND GENERAL BUILDING REQUIREMENTS, PARA , PAGE 28, (II) BUILDING SERVICES-SECTION 3 TABLE -4, PAGES kld WATER BALANCE DIAGRAM FRESH INPUT 194 kld Flats = 224 kld Community Hall 4 kld Games room 3 kld Gymnasium 2 kld Service Persons 15 kld Floating Population 2 kld Losses 2 kld WASTEWATER GENERATED 213 kld Swimming pool 10 kld CAR WASHING 14 kld RECYCLED 14 kld RECYCLED DUAL FLUSHING 67 kld TREATED WASTEWATER GENERATED 213 kld RECYCLED 26 kld LANDSCAPING 26 kld TREATED WASTEWATER DISCHARGE 106 kld Page 2 of 9

3 Municipal Solid Waste Generation and Its Management Garbage will be segregated at source for biodegradable, in-organic recyclables and in-organic inert material during construction (65 kg/day) ( kg/day) and operational phase (795 kg/day). The garbage (solid waste) generated within the project site will be biodegradable, recyclables and inert material in nature. Organic portion (50%) will be treated in-house by installing mechanical composter, In-organic recyclables (15%) will be sold to the vendor and in-organic inert material (35%) will be disposed off in SLF by Project proponent in association with KMC, as per the guideline given by SEAC/SEIAA/WBPCB for management of Municipal solid waste. Person Rate Total kg/day kg/day Flats Community Hall Games Room Gymnasium Service persons Floating Population STREET SWEEPING GRAND TOTAL SAY 795 Garbage during construction Solid waste to be generated in the project = 795 kg/day Storage and Segregation of waste Biodegradable solid waste generated will be segregated at site. Biodegradable part will be treated by installing mechanical composter to produce manure. Non biodegradable recycles will be sold to the vendor. Inert material will be disposed off through the KMC system. The general characteristics of solid waste generated from the complex indicate organic part as 50%, inorganic recyclables as 15% & inorganic inert material as 35%. Volume required for Solid Waste segregation for the entire 200 kg / cum = 3.98 cum Considering Storage depth = 0.5 m Area required for Solid Waste segregation for the entire project = (3.98/0.5) = 7.96 sqm Say total segregation area = 2.0 times of 7.96 sqm = sqm Page 3 of 9

4 Adding additional 20% area for movement, etc. Total area for storage and segregation of waste = sqm Organic waste management We will install package plant for converting organic solid waste to compost (technology approved by WBPCB) Organic waste generated = kg/day Requirement of area for composting (50 kg/day/sqm) = 7.95 sqm Storage area for compost (50%) = 3.98 sqm Adding additional 20% area for pathway etc, Total area requirement for organic waste composting = % X ( ) = sqm Inorganic waste management The inorganic recyclable waste generated = 15% of 795 kg/day = kg/day The recyclable waste will be disposed off in regular manner. Secured Landfilling The non-recyclable inorganic (inert material) and rejects from compost unit will be transported for disposal in secured land filling site which will be operated and maintained by KMC in association with project authorities. Quantity of non-recyclable inorganic and rejects from composting = 35% of 795 kg/day+ 10% of kg/day = ( ) kg/day = 318 kg/day. The inorganic inert waste transported to secured landfill site of KMC = 318 kg/day Sl. No. Component Area (sqm) 1 Storage and Segregation Organic waste Composting TOTAL SAY Total inorganic Inert waste to be disposed of in secured landfill site of KMC = 318 kg /day Page 4 of 9

5 Storm Water Management The surrounding area is predominantly residential and commercial area. The total land area of the proposed project is sqm. By applying rational formula the peak rate of storm runoff considering 12 mm/hr rainfall is given below. Total land area = sqm = 1.38 ha. By applying rational method, the peak rate of run-off = 10 x 0.60 x 12 x 1.38 cum/hr. = cum/hr. = cum/sec. Velocity through pipe is 1.0 m/sec (non-scouring and non-silting). The required diameter of pipe is 200 mm. The storm drains of the complex will collect and convey the rainwater into the adjacent KMC drain. The internal drainage system will be designed considering the invert level of the KMC drain (outfall) in-front of the project site to avoid any flooding or water logging in the site. RAIN WATER HARVESTING The total roof area is about sqm. As per SEAC proposed guidelines the rain water harvesting potential is calculated in the following Table: DETAILS A,B,C,D NO. OF STORY A&B- B+G+10, C&D- B+G+11 ROOF AREA, SQM TOTAL RAIN WATER POTENTIAL, MINIMUM PERCENTAGE OF RAIN WATER WHICH SHOULD HARVESTED BY STORAGE (%) SUB- RECHARGE (%) RAIN WATER HARVESTING POTENTIAL AS PER SEAC GUIDELINES STORAGE, SUB- RECHARGE, TOTAL TOTAL As per SEAC proposed guidelines of storage facilities and sub-surface recharging facilities required will be lakh liters and lakh liters respectively. Total volume of rooftop rainwater to be harvested as per SEAC guideline is s i.e cum. We are proposing 1 nos. storage tank of 100 cum capacity each i.e. 100 cum (total) for rooftop rainwater storage. Rest (29.62 i.e cum) will be recharged through 2 nos. recharge tubewell of each 150 mm diameter. Considering 81 days rainfall in a year, per day average rain water available is cum/day. Per day average rainfall available for recharge for each recharge structure = 36.56/2 = cum/day. All rooftop rain water will be diverted to the rainwater storage tank of 100 cum capacity (100 cum * 1 nos.) and overflow of the tank will be diverted to recharge structure and overflow of the recharge structure will be diverted to storm water drain within the campus. From the local survey/the agencies working for doing borewells, it is observed that there are prominent sand layers (aquifer) in the 65.0 to 90.0 meter zone. We are proposing to install our strainer in between 70 to 82 meter zone. Page 5 of 9

6 The quantity of Recharge, Q can be calculated through the following formula for Aquifer: Q = [2(22/7) * T *(H-h)] /[2.3 log 10(R/r)] Where, K= Permeability Coefficient is 5 cum/day/sqm, considering fine sand b = Average height of Aquifer = 12 meter, T= Tansmissibility of the aquifer = K * b H=Initial artesian pressure at the bottom of the aquifer h=artesian pressure in the well, (H-h) = Draw down =1.0 meter, R = 200 meter r =Radius of well = 150mm = 0.15 M Therefore, Total recharging capacity from 1 nos. 150 mm diameter tubewells is given below Q= [2X (22/7) X 5 X 12] / [{2.3 Log 10 (200/0.15)}] = ( / 7.2) Cum/Day = cum /Day We are proposing 1 nos. of 150 mm diameter tubewell for recharging. Average Capacity of recharging through 2 nos. tubewells is = * 2 = cum/day, whereas average requirement is cum/day. Average Capacity of recharging through 1 no. tubewell is = cum/day, whereas average requirement for each recharge structure is cum/day. Hence OK CHECK FOR RECHARGE STRUCTURE Details Roof Area, Sqm Runoff Coefficient Annual Rainfall, meter Total Potential of rainwater per Annum, cum Total Potential of rainwater per Annum, Per day average rainwater available considering 81 rainy days in a year, cum/day A,B,C,D TOTAL Page 6 of 9

7 BLOCK TYPE A,B,C,D NO. OF STORY A&B- B+G+10, C&D- B+G+11 ROOF AREA, SQM TOTAL RAIN WATER POTENTIAL, MINIMUM PERCENTAGE OF RAIN WATER WHICH SHOULD HARVESTED BY STORAGE (%) SUB- RECHARGE (%) RAIN WATER HARVESTING POTENTIAL AS PER SEAC GUIDELINES STORAGE, SUB- RECHARGE, TOTAL TOTAL We are proposing 1 nos. storage tank of 100 cum capacity each i.e. 100 cum (total) for rooftop rainwater storage. Rest (55.82 i.e cum) will be recharged through 2 nos. recharge tubewell of each 150 mm diameter. Considering 81 days rainfall in a year, per day average rain water available is cum/day. Per day average rainfall available for recharge for each recharge structure = 68.91/2 = cum/day. We are providing 2nos. of storage tanks. Each Tank volume required = cum. We are providing Length 5 meter, Width 4 meter and Effective Depth 2 meter, Total Volume Provided 40 cum. Overflow of the recharge structure will be diverted to the storm water line in the project area. Page 7 of 9

8 R.C.C. SLAB 500 Ø COVER PLUG 500 Ø COVER GROUND LEVEL INPUT STEP 300 OVERFLOW 300 GROUND LEVEL PIT LENGTH - E WIDTH - F 2000 LEGEND MESH MESH COARSE SAND GRAVEL GRAVEL 3-5 mm SLOTTED PIPE mm 5-10 mm mm A : 12 Mt. B : 82 Mt. C : 1 Mt. D : 0.15 Mt. E : 5 Mt. F : 4 Mt. EFFECTIVE DEPTH : 2 Mt. EFFECTIVE VOLUME = 5*4*2 = 40 CUM PIPE DIAMETER "D" "B" STRAINER "A" PLUG "C" RECHARGE STRUCTURE Electricity, DG sets, Stack height Electricity will be supplied by CESC. The connected load will be about 2110 KVA. DG sets - 2 nos. 500 KVA each and 1 no. 200 KVA is proposed. The emission from DG sets will be discharged through 4.5 m for each 500 KVA DG sets and 2.8 m for 200 KVA DG set above the roof of the building. Fuel required for DG sets will be about 192 litre/hr. Page 8 of 9

9 TREE PLANTATION DETAILS SL. NO. BOTANICAL NAME COMMON NAME QUANTITY 1 Alstonia scholaris DEVIL'S TREE 10 2 Ampherstia nobilis TREE OF HEAVEN 2 3 Bauhinia purpurea KACHNAR 15 4 Brassia actinophylla UMBRAELLA TREE 10 5 Cassia fistula AMALTAS 5 6 Delonix regia GULMOHAR 5 7 Grevillea robusta SILVER OAK 5 8 Gardenia jasminoides CAPE JASMINE 12 9 Ixora coccinea RUGMINI 5 10 Jacaranda mimosifolia NILI GULMOHAR Michelia champaca GOLDEN CHAMPA 8 12 Nyctanthes arborv tiris CORAL JASMINE Plumeria alba WHITE CHAMPA 7 14 Plumeria rubra RED CHAMPA 5 15 Spathodea companulata TULIP TREE Thevetia peruviana YELLOW OLEANDER 3 17 Azadirachta indica NEEM TREE 2 18 Dillenia indica ELEPHANT APPLE 4 19 Ficus benjamina JAVA FIG TREE 5 20 Ficus reginold GOLDEN FIG TREE 6 21 Schleichera trijuga KUSUM 5 22 Terminalia arjuna ARJUN TREE Aegle marmelos BAEL 5 24 Mangifera indica var. 'AMARPALLI' MANGO 5 25 Mangifera indica var. 'MULLICA' MANGO 5 26 Artocarpus heterophyllus JACKFRUIT TREE 5 27 Areca catechu BETELNUT PALM 4 28 Bambusa vulgaris GOLDEN BAMBOO PALM 6 29 Cocos nucifera 'NARIEL'(tall variety) COCONUT PALM 3 30 Latania lantroides RED LATAN PALM 3 31 Latania loddigesii BLUE LATAN PALM 4 32 Borassus flabellifer PALMYRA PALM 6 Total 200 Fire Fighting There will be all provisions as per NBC-2005 and other norms of fire fighting for the given height of the building. Clearance from WBFES will be obtained. Others There will be adequate car parking for the owners and provision for visitor s car park. Page 9 of 9