Details of Project. Underground source

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Hortense Heath
6 years ago
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1 Details of Project The project proponent wants to develop a Residential complex with all modern amenities at R.S./L.R. Dag No - (442,447,453,454, 443,444), J.LNo-29 Of Khamar Mouja & R.S./L.R. Dag No-(99(P),101,102(P),103,105,106,107,108,109,110,111,112,113(P),114(P),115,125,126, 127,128, 141, 142, 143,144,185,186,187,188, 85(P), 680,686, 687,688, 689), J.L.No-44 Of Bishnupur Mouja,Under Rajarhat, P.S - Rajarhat, Dist- North 24 Parganas, West Bengal. 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 (38.78%) Total Green Area sqm (21.11%) Exclusive Tree Plantation Area sqm (20.31%) Total Paved Area sqm (15.20%) Service Area (beyond basement) sqm (4.52%) Future Provision Area sqm (8.18%) Basement sqm (12.21%) No. of Block & Storey No. of Dwelling units Source of Water Total Quantum of Water required Quantity of Wastewater Generation Quantity of treated wastewater recycled Total Residential Blocks 10 nos. Residential building Block 1A, 1B, 1C, 1D, 1E,1F - (G+18), Block 2A, 2B, 2C, 2D - (2B+G+22) Sports Club Block G+3 Entertainment Club Block G nos. Underground source 2235 KLD 1692 KLD 844 KLD Quantity of treated wastewater Discharge 848 KLD Quantum of Fresh Water required Quantity of Solid Waste Generation Constructional Phase Water Demand Total Population During Construction 1391 KLD 7915 kg/day 193 kld (Construction work 29 kld, Workers 164 kld) 2340 persons Total Population During Operation persons (permanent , temporary- 5396) Electricity Load Electricity Supplied By D.G.Sets Fuel (diesel) Required for D.G.Sets Stack Height for D.G.Sets Car Parking provided No. of trees provided 9970 KVA WBSEDCL 2 x 2000 KVA, 3 x 1500 KVA & 1 x 1470 KVA DG sets 1595 litre/hr. 8.9 m stack for each 2000 KVA DG set, 7.7 meter stack for each 1500 KVA DG set & 7.7 m stack for each 1470 KVA DG set 2309 nos. 860 Nos. Page 1 of 8

2 Project Cost Height of the building 434 crores 60 mt. (max) Water Supply, Wastewater Generation, Recycling and Discharge Daily water demand of the proposed project during operation phase will be 2235 kld. Out of the total water demand 1391 kld will be the fresh water demand and rest 844 kld (Landscaping kld; Car Washing 93 kld, Flushing 639 kld) will be recycled from treated wastewater. The total wastewater generated from this project during operational phase is around 1692 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 Panchayat drain kld. The fresh water will be abstracted from underground source. Total popu. Lpcd Total litre/day kld Residential Service Persons Floating Population Sub Total Landscaping 112 Car washing 93 Losses 20 Swimming Pool 10 Sub Total TOTAL WATER REQUIREMENT 2235 Total Wastewater Generation 1692 Total Wastewater discharge 848 Total Recycling 844 Landscaping 112 Flushing 639 Car washing 93 Fresh Water Requirement 1391 OCCUPANCY RATE AS PER NBC 2016, PART 9, PAGE 11, SECTION 1,CLAUSE 4.1 Page 2 of 8

3 WATER BALANCE DIAGRAM FRESH INPUT 1391 kld Flats 1917 kld (Fresh water 1278 kld, flushing 639 kld) Service Persons 2 kld Floating Population 81 kld Swimming Pool 10 kld Losses 20 kld Flushing 639 kld WASTEWATER GENERATED 1692 kld CAR WASHING 93 kld RECYCLED 93 kld TREATED WASTEWATER GENERATED 1692 kld RECYCLED 639 kld TREATED WASTEWATER DISCHARGE 848 kld RECYCLED 112 kld LANDSCAPING 112 kld Solid Waste Generation and Its Management Garbage will be segregated at source for biodegradable, in-organic recyclables and inorganic inert material during construction (468 kg/day) ( kg/day) and operational phase (7915 kg/day). The garbage (solid waste) generated within the project site will be biodegradable, recyclables and inert material in nature. Organic portion (40%) will be treated in-house by installing mechanical composter, In-organic recyclables will be sold to the vendor and in-organic inert material will be disposed off in SLF by Project proponent in association with Rajarhat Bishnupur-II Gram Panchayat, as per the guideline given by SEAC/SEIAA/WBPCB for management of Rajarhat Bishnupur -II Gram Panchayat solid waste. Page 3 of 8

4 Person Rate Total kg/day kg/day Residential Service Persons Floating population Street Sweeping GRAND TOTAL Say Solid Waste Management proposal for the Project Solid waste to be generated in the project = 7915 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. The general characteristics of solid waste generated from the complex indicate organic part as 40%, inorganic recyclables as 20% & inorganic inert material as 40%. Volume required for Solid Waste segregation for the entire 200 kg/cum = cum Considering Storage depth = 0.5 m Area required for Solid Waste segregation for the entire project = (39.575/0.5) = sqm Say total segregation area = 2.0 times of sqm = sqm 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 = 3166 kg/day Requirement of area for composting (50 kg/day/sqm) = sqm Storage area for compost (50%) = 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 = 20% of 7915 kg/day =1583 kg/day The recyclable waste will be disposed off in regular manner. Page 4 of 8

5 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 Rajarhat Bishnupur -II Gram Panchayat in association with project authorities. Quantity of non-recyclable inorganic and rejects from composting = 40% of 7915 kg/day+ 10% of 3166 kg/day = ( ) kg/day = kg/day The inorganic inert waste transported to secured landfill site of the Rajarhat Bishnupur -II Gram Panchayat = kg/day Sl. No. Component Area (sqm) 1 Storage and Segregation Organic waste Composting TOTAL SAY 305 Total inorganic Inert waste to be disposed of in secured landfill site of Rajarhat Bishnupur -II Gram Panchayat = kg /day Storm Water Management The surrounding area is predominantly residential and commercial area. The net 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 = 6.14 ha. By applying rational method, the peak rate of runoff = 10 x 0.60 x 12 x 6.14 cum. /hr. = cum/hr. = cum/sec. Velocity through pipe is 1.1 m/sec (non scouring and non silting). The required diameter of pipe is 420 mm. The storm drains of the complex will collect and convey the rainwater into the adjacent Panchayat drain. The internal drainage system will be designed considering the invert level of the Panchayat drain (outfall) in-front of the project site to avoid any flooding or water logging in the site. Page 5 of 8

6 RAIN WATER HARVESTING SEAC, West Bengal Guideline : The total roof area is about sqm. The SEAC guideline regarding rain water harvesting is as follows Sl. No. Category of Building Minimum percentage of rain water which should harvested by Surface Storage Sub-surface Recharge 1 11 to 15 storied Building & Above 40% 60% 2 6 to 10 storied Building 35% 45% 3 3 to 5 storied Building 25% 15% (recharge or additional storage) 4 Less than three storied Building 10% 10% Note While suggesting the guidelines, RWH potential in 1000 sqm Roof Area was considered to be 7, 68,000 liters annually based on the rainfall characteristics. Uniform utilization of harvested rainwater throughout the year from created storage tank was also considered. Based on the above consideration, the storage facility to be created from 1000 sqm roof area for Sl. No. 1,2, 3 were thought to be 3 lakh litre, 2.5 lakh litre and 1.5 lakh liters respectively. As per SEAC proposed guidelines the rain water harvesting potential is calculated in the following Table: DETAILS NO. OF STORY ROOF AREA, SQM TOTAL RAIN WATER POTENTIAL, lakh litre MINIMUM PERCENTAGE OF RAIN WATER WHICH SHOULD HARVESTED BY SURFACE STORAGE (%) SUB- SURFACE RECHARGE (%) RAIN WATER HARVESTING POTENTIAL AS PER SEAC GUIDELINES SURFACE STORAGE, lakh litre SUB- SURFACE RECHARGE, lakh litre Residential G+18, 2B+G Sports and entertainment G club block Total TOTAL As per SEAC proposed guidelines of storage facilities and sub-surface recharging facilities required will be lakh liters and lakh litres respectively. Total volume of roof top rainwater to be harvested as per SEAC guideline is lakh litres i.e cum. As per MoEFCC guideline [SO 3999(E), dated ) for Rain water harvesting : Roof Top Rain water storage : Atleast 1 day fresh water demand Page 6 of 8

7 Recharge structure : 1 recharge structure for 5000 sqm built up area Proposal: Fresh water demand for the project is : 1391 KLD Total Built Up area of the project is : sqm We are proposing to make surface water storage to meet at least 1 (one) day fresh water demand and subsurface recharge through recharge structure of suitable diameter per 5000 sq.m built up area. We are proposing 16 nos. storage tanks of 87 cum capacity for roof top rainwater storage. Recharge structure of 58 nos. ( /5000 = 57.88) Recharge structure Details : From the local survey/the agencies working for doing borewells, it is observed that there are prominent sand layers (confined aquifer) in the 39.6 to meter zone. We are proposing to install our strainer in between 100 to 112 meter zone. The quantity of Recharge, Q can be calculated through the following formula for confined 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 Confined 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 no. 150 mm diameter tubewells is given below (each) Q= [2X (22/7) X 5 X 12] / [{2.3 Log 10 (200/0.15)}] = ( / 7.2) Cum/Day = cum /Day Per day average roof top rainwater available for recharging through each recharge structure is 3.23 cum. We are proposing 58 nos. of 150 mm diameter tubewells for recharging with capacity of cum/day. Recharging capacity through 58 nos. of tubewells is = 52.38*58 = cum/day and our average requirement is cum/day Hence OK Page 7 of 8

8 RAINWATER HARVESTING FLOW SHEET ROOFTOP RAINWATER STORAGE TANK 16 NOS. OVER FLOW RECHARGE STRUCTURE OVER FLOW INTERNAL STORM WATERDRAIN FINALLY TO PANCHAYAT DRAIN Electricity, DG sets, Stack height Electricity will be supplied by WBSEDCL. The connected load will be about 9970 KVA. DG sets - 2 nos KVA, 3 no KVA & 1 no KVA is proposed. The emission from DG sets will be discharged through a 8.9 m stack for each 2000 KVA DG set, 7.7 meter stack for each 1500 KVA DG set & 7.7 m stack for each 1470 KVA above the roof of the building. Fuel required for DG sets will be about 1595 litre/hr. TREE PLANTATION DETAILS SL. NO. BOTANICAL NAME COMMON NAME QUANTITY 1 Terminalia Catappa Badam 75 2 Spathodea campanulata African Tulip Tree 98 3 Tabebuia rosea Rosy Trumpet Tree 50 4 Azadiracha indica Neem 86 5 Cassia fistula Amaltas 65 6 Anthocephalus cadamba Kadam 72 7 Jacaranda mimosifolia Jacaranda 88 8 Delonix regia Gulmohor 85 9 Lagerstroemia speciosa Jarul Artocarpus heterophyllus Kanthal Mimusops elengi Bakuli 95 Total 860 Fire Fighting There will be all provisions as per NBC-2016 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 8 of 8

Max. building height (m)

Max. building height (m) Environmental Management Plan (EMP) for Himalaya Falaknuma by Himalaya Developers Ahmedabad No. Particulars Details 1. Proposal for New Project 2. Type of Project and Commercial Building Construction Project