Expansion of Residential Complex at Holding No RGM,AS/534/04, Mouza Teghoria, and Holding 1 No RGM-582/AS/01/04, Mouza Kaikhali, VIP Road, PO-Airport, Ward No. 10 & 11 of Bidhan Nagar Municipal Corporation, Dist-24 PGS (North), West Bengal Conceptual Plan

1.0 INTRODUCTION Army Welfare Housing Organisation (AWHO) was formed in December 1978 under the Societies Registration Act XXI of 1860. Army Welfare Housing Organisation’s main aim and objective is to construct houses for serving and retired Army personnel and their widows in selected stations throughout India. The Adjutant-General of the Indian Army is the ex-officio Chairman of Army Welfare Housing Organisation. The Board of Governors of AWHO is entirely constituted of senior army officers. The headquarters of Army Welfare Housing Organisation is based in New Delhi, India.

AWHO has planned expansion of its existing residential complex located at Holding No RGM- AS/534/04, Mouza Teghoria, and Holding No RGM-582/AS/01/04, Mouza Kaikhali, VIP Road, PO- Airport, P.S.-Rajarhat, Ward No. 10 & 11 of Bidhannagar Municipal Corporation, Dist-24 PGS (North), West Bengal in 2011 with the view of welfare of the serving and retired army officers and other ranks. The project site was earlier under the Rajarhat Gopalpur Municipality and now has been shifted to Bidhannagr Municipal Corporation. Approvals were taken from Rajarhat Gopalpur Municipal Corporation (RGMC) for expansion of the project. Project is spread on area of 47,500.435 sq m (11.73 acres) and the land is in possession of AWHO. Land documents are attached as Annexure I.

Built-up area of the existing colony as per sanction was 26606.02 sq m. Construction of existing colony started in 1994 and got completed in 2011. Completion certificate is attached as Annexure II. However the construction of more than 50% was done till 2006 thus environmental clearance was not applicable on the existing phase of the project. As per approval it was proposed to develop 16 residential towers, security office and site office. Total 234 flats were to be developed as per Phase I sanction plan but only 222 flats were developed as required that time. In 2011, AWHO planned expansion of the project and project involves development of 4 blocks comprising of 10 towers and 1 club. In expansion phase total flats proposed to be built were 180. However remaining flats of phase I (12 nos.) were also constructed during the expansion phase of the project. Built-up area of the project after expansion became 56,882.87 sq m.

As per EIA Notification, 2006 as amended projects having built-up area more than 20,000 sq m and less than 1,50,000 sq m are listed under Activity 8 (a) of schedule 1 of EIA Notification, 2006 and thus it was required to obtain prior environmental clearance for all the projects listed in schedule I. Accordingly, AWHO has submitted an application to SEIAA, West Bengal in year 2011 for obtaining the environmental clearance. The environmental clearance process took substantial amount of time. Project file was also closed by SEIAA/SEAC in 2013 without prior intimation to AWHO (as AWHO was unable to submit the information as required by SEIAA, i.e. permission from CGWB for the bore wells which

Army Welfare Health Organization Expansion of Residential Complex at Holding No RGM,AS/534/04, Mouza Teghoria, and Holding 2 No RGM-582/AS/01/04, Mouza Kaikhali, VIP Road, PO-Airport, Ward No. 10 & 11 of Bidhan Nagar Municipal Corporation, Dist-24 PGS (North), West Bengal Conceptual Plan

itself takes substantial time). Thereafter SEIAA/SEAC, West Bengal was dissolved due to completion of the tenure. New SEIAA formed has suggested AWHO to file fresh application in 2014. Accordingly AWHO has filed fresh application for obtaining the environmental clearance in 2014. In the mean time AWHO started the construction in anticipation of grant of environmental clearance on the basis of all the necessary approvals already obtained from the other concerned authorities and environmental management measures considered in the project design. SEIAA, West Bengal directed SEAC to carry out the site visit to examine status of the project and after the visit SEAC declared the project as violation of the EIA Notification, 2006 as construction works for expansion phase were taken up at the site. SEIAA then initiated the credible action against AWHO on basis of SEAC findings and asked AWHO to submit the resolution of board as per requirement of MoEF&CC OM dated 12.12.2012 in 2015. AWHO has submitted the resolution of board as required committing for not repeating the violation again. No action was taken on the project thereafter by SEIAA, West Bengal. The project was then delisted by SEIAA, West Bengal after issue of the MoEF&CC Notification SO 804 (E) dated 14.03.2017 and has directed AWHO to submit the fresh application to MoEF&CC for obtaining the environment clearance. We have now applied to MoEF&CC for grant of the environmental clearance for the project. Project construction has been completed barring some remaining finishing works. AWHO commits not to repeat such violation again in future.

2.0 APPLICABLE ENVIRONMENTAL LEGISLATIONS As per the EIA Notification, 2006, it is required for the project listed in the Schedule I to obtain prior environment clearance from concerned authority. Building and Construction projects having built-up area more than 20,000 sq m and less than 1,50,000 sq m falls under activity 8 (a) & Category B2 of schedule I of the EIA Notification, 2006 as amended. Thus, it is required to obtain prior environmental clearance from SEIAA, West Bengal for this project. But since the project involves violation of EIA Notification, 2006 the project will be appraised as per the MoEF&CC Notification S804 (E) dated 14.03.2017 under Category A. Other acts and rules applicable to the project include:

. Environment protection Act, 1986 . EIA Notification, 2006 as amended . The Air (Prevention and Control of Pollution) Act,1981 . The Water (Prevention and Control of Pollution) Act,1974 . Municipal solid waste management rules, 2016 . Construction & Demolition Waste Management Rules, 2016 . E-Waste Rules, 2016 . Plastic waste Management Rules, 2016 . Hazardous & Other waste Management Rules, 2016

Army Welfare Health Organization Expansion of Residential Complex at Holding No RGM,AS/534/04, Mouza Teghoria, and Holding 3 No RGM-582/AS/01/04, Mouza Kaikhali, VIP Road, PO-Airport, Ward No. 10 & 11 of Bidhan Nagar Municipal Corporation, Dist-24 PGS (North), West Bengal Conceptual Plan

. Noise Rules, 2000 . Bye Laws of the Local Body

3.0 LOCATION AND LAND USE OF PROJECT SITE Proposed project site is located at Holding No RGM,AS/534/04, Mouza Teghoria, and Holding No RGM- 582/AS/01/04, Mouza Kaikhali, VIP Road, Ward No. 10 & 11 of Bidhannagr Municipal Corporation, Dist-24 PGS (North), West Bengal. Location map of the project site is given below in Figure 1. Geographical co-ordinates of the center of the project site (phase II) are 22°37'34.80"N & 88°26'12.06"E. Geographical coordinates of all the corners of the project site (phase I & II) are given in Table 1 & Figure 2. Land use of the project is residential and site lies in residential area of Bidhannagar Municipal Corporation. Initially land use was agricultural and the conversion has been obtained for development of the residential project.

Figure 1: Location map of Project Site

Army Welfare Health Organization Expansion of Residential Complex at Holding No RGM,AS/534/04, Mouza Teghoria, and Holding 4 No RGM-582/AS/01/04, Mouza Kaikhali, VIP Road, PO-Airport, Ward No. 10 & 11 of Bidhan Nagar Municipal Corporation, Dist-24 PGS (North), West Bengal Conceptual Plan

Table 1: Geographical coordinates of Project Site Points as in Map Latitude Longitude PHASE I A 22°37'39.45"N 88°26'1.77"E B 22°37'39.87"N 88°26'1.75"E C 22°37'39.33"N 88°26'4.84"E D 22°37'41.18"N 88°26'5.10"E E 22°37'39.85"N 88°26'9.69"E F 22°37'40.28"N 88°26'10.12"E G 22°37'39.94"N 88°26'11.53"E H 22°37'40.26"N 88°26'11.86"E I 22°37'40.73"N 88°26'14.31"E J 22°37'39.82"N 88°26'14.83"E K 22°37'39.43"N 88°26'14.27"E L 22°37'38.09"N 88°26'14.15"E M 22°37'38.61"N 88°26'15.65"E N 22°37'35.91"N 88°26'16.59"E O 22°37'38.00"N 88°26'14.13"E P 22°37'38.10"N 88°26'12.49"E Q 22°37'36.62"N 88°26'12.09"E R 22°37'37.13"N 88°26'10.69"E S 22°37'36.36"N 88°26'10.47"E T 22°37'36.53"N 88°26'10.04"E U 22°37'37.31"N 88°26'10.27"E PHASE II T 22°37'36.43"N 88°26'10.04"E S 22°37'37.06"N 88°26'10.67"E R 22°37'36.60"N 88°26'12.11"E Q 22°37'38.02"N 88°26'12.53"E P 22°37'37.90"N 88°26'14.03"E O 22°37'35.52"N 88°26'15.34"E N 22°37'35.03"N 88°26'14.45"E AA 22°37'32.29"N 88°26'13.57"E AB 22°37'33.61"N 88°26'9.17"E AC 22°37'36.48"N 88°26'10.07"E

Army Welfare Health Organization Expansion of Residential Complex at Holding No RGM,AS/534/04, Mouza Teghoria, and Holding 5 No RGM-582/AS/01/04, Mouza Kaikhali, VIP Road, PO-Airport, Ward No. 10 & 11 of Bidhan Nagar Municipal Corporation, Dist-24 PGS (North), West Bengal Conceptual Plan

Figure 2: Geographical coordinates of Project Site

4.0 SURROUNDINGS AND CONNECTIVITY OF PROJECT SITE Project site is surrounded by residential and commercial areas. Surroundings of the project site are given in the Table 2. Project site is well connected by roads. Project site abuts Biswa Bangla Sarani road in West direction. Biswa Bangla Sarani road connects to VIP road and Kazi Narzul Islam Road in Western direction. Biswa Bangla Sarani road runs along Western and Southern boundary of the site. Biswa Bangla Sarani road connects the Rajarhat road at 500 m distance from site in Easterndirection. Kazi Narzul Islam Road connects the site to airport road at 730 m from North direction. Biman Bandar Railway Station is at approx 2.0 km from site in Northen direction. Dum Dum Cantonment metro station is at distance of approx. 2.6 km in WNW direction. Netaji Subhash Chandra Bose International airport is at approx 770 m in North direction. Connectivity map of the site is given in Figure 3. Google maps showing the surroundings of the project site within 500 m, 2 km, 5 km and 10 km are attached as Annexure III.

Table 2: Surroundings of the Project Site S. No. Category Distance and Direction 1. Nearby Residential Areas . Club town colony (abuts site, W) . Panchwati complex (30 m, N) . Mali Bagan (120 m, S) . Chinar Park (100 m, E) . Anupama Phase-I (60 m, W)

Army Welfare Health Organization Expansion of Residential Complex at Holding No RGM,AS/534/04, Mouza Teghoria, and Holding 6 No RGM-582/AS/01/04, Mouza Kaikhali, VIP Road, PO-Airport, Ward No. 10 & 11 of Bidhan Nagar Municipal Corporation, Dist-24 PGS (North), West Bengal Conceptual Plan

. Teghoria (170 m, S) 2. Nearest City . Kolkata (8.0 km, SW) 3. Nearest Educational Institutes . BP Poddar institute of Management & Technology (150 m, N) . Euro Kids (260 m, NW) . Rinpoche Academy of Management and Technology (400 m, E) . National English School (1.2 km, S) . St. Stephen School (1.3 km, W) . St. James School (1.3 km, NE) . Calcutta Public School (1.6 km, S) 4. Nearest Hospital . Charnock Hospital and Research Centre (100 m, S) . Swasti Medical Unit (1.0 km, S) . Narayana Multispecialist Hospital (1.5 km, SE) . Aditya Hospital (1.4 km, W) . Narayana Multispeciality Hospital (1.4 km, NW) . ILS Hospital (1.8 km, SW) 5. Water Bodies . Pond (abuts Phase I site, NE) . Pond (230 km, NE) . Kolu Pukur (600 m, SE) . Pond near Modern Park (1.6 km, NW) . Kestopur Khal (2.3 km, S) . Eco-park water body (3.8 km, SE) . Kestopur Canal (3.6 km, S) . Tanks at Narantal (2.7 km, SW) . Rekjuani Lake (4.0 km, E) . Noai Canal (4.4 km, NE) . Hooghly River (7.0 km, W) 6. Nearest Defense Installation . Kolkata Cantonment (1.3 km, W) 7. Nearest Eco-sensitive zone . East Kolkata Wetland (5.5 km, S) 8. Nearest Roads & Highway . Biswa Bangla Sarani (abuts site, W) . Kazi Nazrul Islam Marg (25 m, W) . VIP Road (40 m, W) . Biswa Bangla Sarani (abuts site, S) . Khudiram Bse Road (1.3 km, NW) . Rajarahat Road (480 m, E) . RN Guha Road (2.2 km, W) . Shyamnagar Road (2.5 km, SW) . Airport Service Road (730 m, N) 9. Nearest Railway Station . Biman Bandar Railway Station (2.0 km, N) . Durganagar Railway Station (3.0 km, NW) . Birati Station (4.0 km, NW) 10. Nearest Airport . Kolkata Airport (770 m, N) 11. Nearest Metro Station . Dum Dum Cantonment Railway Station (2.6 km, W)

Army Welfare Health Organization Expansion of Residential Complex at Holding No RGM,AS/534/04, Mouza Teghoria, and Holding 7 No RGM-582/AS/01/04, Mouza Kaikhali, VIP Road, PO-Airport, Ward No. 10 & 11 of Bidhan Nagar Municipal Corporation, Dist-24 PGS (North), West Bengal Conceptual Plan

Figure 3: Connectivity Map of Project Site

Army Welfare Health Organization Expansion of Residential Complex at Holding No RGM,AS/534/04, Mouza Teghoria, and Holding 8 No RGM-582/AS/01/04, Mouza Kaikhali, VIP Road, PO-Airport, Ward No. 10 & 11 of Bidhan Nagar Municipal Corporation, Dist-24 PGS (North), West Bengal Conceptual Plan

5.0 PROJECT COST Total development cost of the project is estimated to be INR 63 Crore.

6.0 AREA STATEMENT Existing phase of AWHO colony comprises of 16 residential blocks (G+3 & G+4), site office and security room. Maximum height of the building in existing phase is 15.15 m (G+IV). Ground coverage of phase I is 6736.928 sq m, FAR of the existing project is 22263.12 sq m and built-up area is 26606.02 sq m. Expansion phase comprise of three blocks comprising of 10 towers, out of which 9 are residential and have G+5 floors and one is club house (G+1). Built-up area of the project after expansion will be 56,882.87 sq m. Summary of areas for existing and expansion phase are given below in Table 3. Detailed area break up for phase I & II are given below. Site layout plan of the project is attached as Annexure IV.

Table 3: Area Summary (Existing and Expansion Phase) Description Existing Phase (Phase I) Expansion Phase (Phase Total Area Area-sq m II) (Expansion-Phase I Area-sq m +Existing Phase- Phase II)-sq m Plot Area 47500.435 Permissible Ground 21330.19 Coverage (@45% of plot area) Proposed Ground Coverage 14.21 11.35 25.56 Percentage (%) Proposed /Achieved Ground 6736.928 5383.02 12119.95 Coverage Permissible FAR (@2.75 of 130351.2 plot area Incentive FAR 14304.29 Total Permissible FAR 144655.49 Proposed FAR 0.542 0.604 1.146 Proposed/Achieved FAR 25480.82 28642.86 54123.68 area 22262.92 20886.42 43149.34 Flats 0 944.12 944.12 Club 3217.9 6812.226 10030.13 Common Areas Covered parking Area 1125 1400 2525 Built-up Area 26840.1 30042.77 56882.87 Green Area Percentage (%) 13.68 6.67 20.35 Green Area 6500 3169.41 9669.41 Maximum height (m) 15.15 17.9 33.05 DU (Dwelling Units)* 234 180 414 (222+12) * Out of 234 only 222 flats were constructed during existing phase, Remaining 12 flats were constructed in expansion phase (phase II). Thus nos. of flats constructed in expansion phase is 192 and total nos of flats is 222+192 = 414.

Army Welfare Health Organization Expansion of Residential Complex at Holding No RGM,AS/534/04, Mouza Teghoria, and Holding 9 No RGM-582/AS/01/04, Mouza Kaikhali, VIP Road, PO-Airport, Ward No. 10 & 11 of Bidhan Nagar Municipal Corporation, Dist-24 PGS (North), West Bengal Conceptual Plan

Table 4: Detailed Area Break-up Existing Phase-Phase I Blocks Floors Towers Height-m Ground FAR Other Built-up Coverage- Area Flat Area Common Covered sq m Area-sq Parking m Area Deluxe A G+IV 1 15.15 308.91 1095.33 162.95 25 0 1283.28 Deluxe B G+IV 1 15.15 300.76 1095.68 162.96 25 0 1283.64 Deluxe F G+IV 1 15.15 308.66 1091.02 162.96 25 0 1278.98 Deluxe G G+IV 1 15.15 308.66 1091.31 162.96 25 0 1279.27 Deluxe J G+IV 1 15.15 297.99 1102.4 139.7 50 0 1292.1 Deluxe L G+III 1 12.25 286.59 842.2 139.8 50 0 1032 Economy C G+IV 1 15.15 509.84 1772.32 287.62 75 0 2134.94 Economy D G+IV 1 15.15 509.84 1772.32 287.62 75 0 2134.94 Economy E G+IV 1 15.15 509.84 1772.32 287.62 75 0 2134.94 Economy P G+IV 1 15.15 501.1 1355.22 291.96 75 0 1722.18 Economy Q G+IV 1 15.15 514.56 1769.09 345.97 25 0 2140.06 Utility H G+IV 1 15.15 428.99 1449.59 207.78 75 0 1732.37 Utility K G+IV 1 15.15 428.99 1450.63 209.14 75 0 1734.77 Utility N G+IV 1 15.15 428.99 1430.47 133.36 150 0 1713.83 Utility M G+IV 1 15.15 428.99 1452.11 205.32 75 0 1732.43 Thirfty R G+IV 1 15.15 429.94 1720.91 30.18 225 0 1976.09 Site Office G 1 4.35 210.439 0 0 0 210.439 210.439 Security Room G 1 2.87 23.839 0 0 0 23.839 23.839 Total-Phase I -- 18 -- 6736.928 22262.92 3217.9 1125 234.278 26840.1 Expansion Phase-Phase II Block A G+V 2 17.9 1408.82 6094.864 1728.976 378 0 8201.84 Block B G+V 3 17.9 1811.1 7671.24 2326.05 600 0 10597.29 Block C G+V 4 17.9 1761.84 7120.32 2757.2 422 0 10299.52 Block D (club) G+I 1 8.9 491.26 944.21 0 0 0 944.12 Total-Phase II -- 10 -- 5473.02 21830.634 6812.226 1400 0 30042.77 Total Phase I +II -- 28 -- 12209.95 44093.554 10030.13 2525 234.278 56882.87

7.0 ESTIMATED POPULATION During Construction Phase Total population during construction phase was approx. 100-150 persons including workmen, labour, supervisors, engineers, architect and manager.

During Operation Phase Total estimated population at the site including Phase I & Phase II is 2381. Population details are given in Table 5.

Table 5: Population at the Site Existing Phase-Phase I Category DUs Standard Population Residents 234 5 PPU 1170 Staff -- 5 % of residential population 59 Visitors -- 10 % of residential 117 population

Army Welfare Health Organization Expansion of Residential Complex at Holding No RGM,AS/534/04, Mouza Teghoria, and Holding 10 No RGM-582/AS/01/04, Mouza Kaikhali, VIP Road, PO-Airport, Ward No. 10 & 11 of Bidhan Nagar Municipal Corporation, Dist-24 PGS (North), West Bengal Conceptual Plan

Total Population-Phase I 1346 Expansion Phase-Phase II Category DUs Standard Population Residents 180 5 PPU 900 Staff -- 5 % of residential population 45 Visitors -- 10 % of residential 90 population Total Population-Phase II 1035 Total Population-Phase I & II 2381

8.0 WATER REQUIREMENT During construction phase source of water supply was private water tanker. During operation phase, source of water is ground water. Permission was obtained from West Bengal State Water Investigation Board for extracting ground water and is attached as Annexure V. Total water requirement for the project is approx. 319 KLD out of which domestic water requirement is 289 KLD. Fresh water requirement for the project is approx. 201 KLD. Daily water requirement calculation & sewage generation for project are given below in Table 6 & 7.Water balance diagram for project during Rainy and Non-Rainy season are given in Figure 4 & 5 below. Table 6: Calculation for Daily Water Demand Existing Phase-Phase I Category Population/Area-sq Standard Water Requirement- Fresh Water Recycled m KLD Requirement- Water KLD Requirement- KLD Residents 1170 135 LPCD 158 111 47 Staff 59 45 LPCD 3 2 1 Visitors 117 15 LPCD 2 1 1 Domestic Water Requirement-Phase I 163 114 49 Landscape 6500 sq m 3 l/sq m/day 20 0 20 Total Water Requirement-Phase I 183 114 69 Expansion Phase-Phase II Residents 900 135 LPCD 122 85 37 Staff 45 45 LPCD 2 1 1 Visitors 90 15 LPCD 2 1 1 Domestic Water Requirement-Phase II 126 87 39 Landscape 3169.41 sq m 3 l/sq m/day 10 0 10 Total Water Requirement-Phase II 136 87 49 Total Domestic Water Requirement-Phase I +Phase II 289 201 88 Total Water Requirement-Phase I + Phase II 319 201 118

Army Welfare Health Organization Expansion of Residential Complex at Holding No RGM,AS/534/04, Mouza Teghoria, and Holding 11 No RGM-582/AS/01/04, Mouza Kaikhali, VIP Road, PO-Airport, Ward No. 10 & 11 of Bidhan Nagar Municipal Corporation, Dist-24 PGS (North), West Bengal Conceptual Plan

Table 7: Wastewater calculation Particular Quantity (KLD) Existing Phase-Phase I Expansion Phase- Total Area (Expansion- Phase II Phase I +Existing Phase- Phase II) Sewage Generated (80% 140 108 248 fresh water for domestic use + 100% flushing water) Capacity of STP 600 Recovered Water 112 87 199 Flushing 49 39 88 Landscaping 20 10 30 Road Washing 2 2 4 Sewer 41 36 77

TOTAL WATER GROUND WATER REQUIREMENT 201 KLD 362 KLD

RECYCLED WATER FRESH WATER REQUIREMENT REQUIREMENT 122 KLD 201 KLD

FLUSHING ROAD WASHING LANDSCAPING CONSUMPTION 88 KLD 4 KLD 30 KLD 201 KLD

100% 80%

122 KLD SEWAGE 248 KLD Sewer STP-600 KLD 77 KLD (@ 80% efficiency)

Figure 4: Water Balance During Dry Season

Army Welfare Health Organization Expansion of Residential Complex at Holding No RGM,AS/534/04, Mouza Teghoria, and Holding 12 No RGM-582/AS/01/04, Mouza Kaikhali, VIP Road, PO-Airport, Ward No. 10 & 11 of Bidhan Nagar Municipal Corporation, Dist-24 PGS (North), West Bengal Conceptual Plan

TOTAL WATER GROUND WATER REQUIREMENT 201 KLD 289 KLD

559 KLD

RECYCLED WATER FRESH WATER REQUIREMENT REQUIREMENT 92 KLD 201 KLD

FLUSHING ROAD WASHING LANDSCAPING CONSUMPTION 88 KLD 4 KLD 0 KLD 201 KLD

100% 80%

92 KLD SEWAGE 248 KLD Sewer STP-600 KLD 107 KLD (@ 80% efficiency)

Figure 5: Water balance during Monsoon season

9.0 SEWAGE GENERATION AND TREATMENT During Construction Phase The quantity of sewage generation during the construction phase was approx. 5 KLD. Sewage was treated in the existing STP at the site.

During Operational Phase STP of 600 KLD with oxidation ditch technology is already installed at the site. The sewage generated is treated in the STP. Treated water is used for flushing, landscaping and road & car washing. Remaining treated water is disposed off to the sewer. Dual plumbing plan is attached as Annexure VI a. Layout of STP is attached as Annexure VI b.

Army Welfare Health Organization Expansion of Residential Complex at Holding No RGM,AS/534/04, Mouza Teghoria, and Holding 13 No RGM-582/AS/01/04, Mouza Kaikhali, VIP Road, PO-Airport, Ward No. 10 & 11 of Bidhan Nagar Municipal Corporation, Dist-24 PGS (North), West Bengal Conceptual Plan

Sewage Treatment Technology Oxidation ditch is an extended aeration activated sludge process. An oxidation ditch is a large holding tank in a continuous ditch with oval shape similar to that of a racetrack. The ditch is built on the surface of the ground and is lined with an impermeable lining. This allows the waste water to have plenty of exposure to the open air for the diffusion of oxygen. The liquid depth in the ditches is very shallow, 0.9 to 1.5 m, which helps to prevent anaerobic conditions from occurring at the bottom of the ditch. The oxidation ditch effluent is clarified in a secondary clarifier and the settled sludge is returned to maintain a desirable MLSS concentration. The MLSS concentration in the oxidation ditch generally ranges from 3,000 mg/ L to 5,000 mg/ L; however, this is dependent upon the surface area provided for sedimentation, the rate of sludge return, and the aeration process. Longer retention time within the ditch will allow for a greater amount of organic matter to be broken down by the aerobic bacteria. After treatment, the waste water is pumped to a secondary settling tank where the sludge and the water are allowed to separate. From there the effluent goes on to other treatment processes or disposal. The sludge that has accumulated on the bottom of the secondary settling tank is then removed and a portion of it is returned to the ditch to facilitate microbial activity in the next batch of sewage to be treated. The oxidation ditch can be operated on continuous basis also. Characteristics of the sewage and treated water is given below in Table 8 & 9. Table 8: Characteristics of Sewage Characteristics of Sewage Daily load 248 KLD Duration of flow to STP 24 hours Temperature Maximum 32oC pH 6.5 -8.5 Color Mild T.S.S. (mg/l) 350-450 mg/l BOD5 (mg/l) 200-250 mg/l COD (mg/l) 350-450 mg/l Oil & Grease 15-20 mg/l

Table 9: Characteristics of Treated Water Characteristics of Sewage Temperature Maximum 32oC pH 6.5 -7.12 Color Mild T.S.S. (mg/l) 22-67 mg/l BOD5 (mg/l) 16-40 mg/l COD (mg/l) 60-110 mg/l Oil & Grease 2-5 mg/l

Army Welfare Health Organization Expansion of Residential Complex at Holding No RGM,AS/534/04, Mouza Teghoria, and Holding 14 No RGM-582/AS/01/04, Mouza Kaikhali, VIP Road, PO-Airport, Ward No. 10 & 11 of Bidhan Nagar Municipal Corporation, Dist-24 PGS (North), West Bengal Conceptual Plan

10.0 STORM WATER MANAGEMENT SYSTEM Storm water generation increases with generation of the paved surfaces. Storm water generation prior development of the project was 22543 cum and after development is approx. 47258.5 cum. Detailed calculation of available run-off is Table 10. Water level in the area is very high, i.e. 2 m bgl thus recharge of the entire storm water is not carried out to prevent the water logging problem. Some quantity of roof-top rain water of the expansion phase is recharged to the ground. Surplus run-off from the site is discharged to the external drain. Stage of ground water development in the area is 71.19%. Area is categorized as safe category. Recharge of ground water will help in replenishing the ground water level. 2 nos. recharge pits are provided at the site for storm water recharge. Total capacity of each recharge pit is 12 cum. Depth of the boewell is 32.3 mbgl to ensure that the water is recharged directly to fresh water aquifer. Detailed section of the rain water harvesting pit is attached as Annexure VII. Layout plan showing location of RWH pits is attached as Annexure VIII. Table 10: Available Run-off from Site Catchment Area-sq m Rainfall Run-off coefficient Available Run-off (mm) Roof top 12119.9 1582 0.9 17256.4 Green 9669.41 1582 0.1 1529.7 Paved Area 10950.1 1582 0.7 28472.4 Available Run-off 47258.5

11.0 PARKING DETAILS Adequate provision will be made for car/vehicle parking at the project site. Parking is proposed to be provided in stilt floor and in open. The parking requirement and parking provided are summarized in the Table 11 & 12 below. Car Parking Plan is attached as Annexure IX

Table 11: Parking Required Phase Parking Requirement FAR (sq Total (ECS) Standard m)/Rooms Phase I-Residential 1 ECS/140 sq m FAR 22263.12 159 Phase II-Residential 20888.21 149 Phase II-club 1 ECS/200 sq m FAR 944.12 5 Total parking Required 313

Army Welfare Health Organization Expansion of Residential Complex at Holding No RGM,AS/534/04, Mouza Teghoria, and Holding 15 No RGM-582/AS/01/04, Mouza Kaikhali, VIP Road, PO-Airport, Ward No. 10 & 11 of Bidhan Nagar Municipal Corporation, Dist-24 PGS (North), West Bengal Conceptual Plan

Table 12: Parking Proposed Description Total Area (sq m) Area/Car (sq m) Parking Proposed ( Cars) Phase I-Covered Parking 1125 12.5 90 Phase I-Open Parking 1600 12.5 128 Phase II-Covered Parking 1400 12.5 112 Phase II-Open Parking 1037.5 12.5 78 Total Parking Proposed 408

12.0 POWER DETAILS AND BACK UP Power requirement for the project is 2380 kVA and source of power is WBSEDCL. Energy consumption for residential area is 7W/sq m, community area is 5W/sq m and service area is 2 W/sq m. 2 Nos. of DG sets were installed for existing phase of total capacity 1000 kVA (2 X 500 kVA). 2 Nos. of DG sets are installed for expansion phase of total capacity 570 kVA (320 kVA+250 kVA). These sets will be operated through an ‘Auto start, Auto load management and Auto stop PLC panel and be able to take care of the part load conditions depending upon the occupancy and ambient conditions. The DG sets will be located at service yard outside the building. DG sets are provided with the acoustic enclosures and are open to air. Stacks will be provided with DG sets so as emissions can be discharged at app. 5 m above the terrace level as per CPCB norms.

13.0 SOLID WASTE GENERATION AND MANAGEMENT Solid waste would be generated both during construction as well as during operation phase. Management plans are prepared for both the phases and are given below During Construction Phase Solid waste generated during construction phase comprise of excavated materials, used bags, bricks, concrete, MS rods, tiles, wood etc. Approx. 20-30 kg/day of waste is generated during construction phase. Solid waste management plan for construction phase is given in Table 13 below. Table 13: Solid Waste Management during Construction Phase S. No. Solid waste Solid waste Management 1. Waste materials like MS Material was segregated into recyclable, reusable and Rods, bricks, concrete, broken rejected fractions at the site itself. Recyclable material was tiles, wood pieces, cement sold to authorize dealers. Re-usable material was stored bags etc. within project site for re-use. Remaining rejects was disposed off through the local agencies in the area. Majority of the waste generated was reusable and recyclable 2. Excavated Soil Excavated soil was used for filling, leveling and landscaping purpose. Top soil was stored sepeeately and used for landscaping. Excess soil was disposed off through

Army Welfare Health Organization Expansion of Residential Complex at Holding No RGM,AS/534/04, Mouza Teghoria, and Holding 16 No RGM-582/AS/01/04, Mouza Kaikhali, VIP Road, PO-Airport, Ward No. 10 & 11 of Bidhan Nagar Municipal Corporation, Dist-24 PGS (North), West Bengal Conceptual Plan

the authorized vendor 3. Domestic Waste generated by Waste generated from labour camps is disposed off labour through local agency on daily basis

During Operational Phase Waste generation during operation phase is majorly municipal waste. Apart from municipal waste insignificant quantity of e-waste and used oil from DG sets is generated. Used oil from DG sets is disposed off through authorized vendors as per Hazardous & Other Waste Rules, 2016. Estimations of solid waste generation from the site are given in Table 14 below. As per the estimations, approx. 1118 kg per day (@ 0.15 kg per capita per day for the visitor, 0.5 kg per capita per day for residents, 0.25 kg per capita per day for the staff members and visitors of assembly and F&B area and 0.2 kg/acres/day are considered for landscape wastes) is generated from project site. Solid waste management during operation phase is given in Table 13 & Table 14 below.

Table 14: Estimated Waste Generated Category Population/Area-sq m Standard Waste Recyclable Non Generation Waste Recyclable (kg/day) Waste

PHASE I Residents 1170 0.5 kg/day 585 175.5 409.5 Staff 59 0.25 kg/day 14.8 4.425 10.325 Visitors 117 0.15 kg/day 17.6 5.265 12.285 Landscape area 1.6 acres 0.2 kg/acre/day 0.3 0 0.3 STP Sludge -- -- 14.2 0 14.2 Total Waste Generation-Phase I 632.3 185.2 446.6 PHASE II Residents 900 0.5 kg/day 450 135 315 Staff 45 0.25 kg/day 11.3 3.375 7.875 Visitors 90 0.15 kg/day 13.5 4.05 9.45 Landscape area 0.9 acres 0.2 kg/acre/day 0.2 0 0.2 STP Sludge -- -- 11.0 0 11.0 Total Waste Generation-Phase II 485.9 142.4 343.5 Total Waste Generation-Phase I+Phase II 1117.7 327.6 790.1 ~1118 ~328 ~790

Solid Waste Management Plan-Operation Phase  Collection and segregation of waste a. A door to door collection system is provided for collection of domestic waste b. Local vendors will be hired for waste collection and management

Army Welfare Health Organization Expansion of Residential Complex at Holding No RGM,AS/534/04, Mouza Teghoria, and Holding 17 No RGM-582/AS/01/04, Mouza Kaikhali, VIP Road, PO-Airport, Ward No. 10 & 11 of Bidhan Nagar Municipal Corporation, Dist-24 PGS (North), West Bengal Conceptual Plan

c. Separate colored bins for dry recyclables and rejected waste are provided in each unit as well as in common and open areas  Disposal a. Rejected fraction of the waste is collected and disposed by local agencies on daily basis b. Recyclables waste and E-waste is sold to authorized vendors c. Used oil from DG sets is sold to authorized vendors

14.0 GREEN AREA Total area measuring 9669.41sq m i.e. 20 % of the total plot area is kept under green cover. Entire area is soft green area. Green includes peripheral green, avenue plantation, laws, planters and play area for kids. Grass pavers are provided in the parking area. Evergreen trees, ornamental trees, ornamental shrubs are proposed to be planted in green area. Only native species and some ornamental species with less water requirement will be planted within the site. Proper aftercare and monitoring of developed green belt will be done. Species planted at the site includes Lagerstromia thorelli, Cassia nodosa, Holarrhena antidysentrica, Tecoma gaudichaudi, Lagerstromia indica, Plumeria alba, Michelia champaka, Bauhinia variagata, Tabebuia crysantha, Macarthur palm, Tabebuia rosea, Allamanda cathartica, Thunbergia erecta, Grewia asiatica, Chinese cherry, Azadirachta indica & Averrhoa carambola . Total nos. of trees planted at the site are 594 nos.. Landscape plan is attached as Annexure IV.

15.0 CONSTRUCTION MATERIAL Material for the construction was sourced from local area only. Quantity of construction material used for construction is given below in Table 15.

Table 15: Quantity of Construction Material ` Material Quantity 1 Cement 9101.3 2 Steel 3413.0 3 Sand 23322.0 4 Aggregate 35267.4

Detail of different type of construction material with their U values is given in Table 16. List of machinery which may be used for construction is given in section below.

Army Welfare Health Organization Expansion of Residential Complex at Holding No RGM,AS/534/04, Mouza Teghoria, and Holding 18 No RGM-582/AS/01/04, Mouza Kaikhali, VIP Road, PO-Airport, Ward No. 10 & 11 of Bidhan Nagar Municipal Corporation, Dist-24 PGS (North), West Bengal Conceptual Plan

Table 16: construction Material with their U- Values Type of Construction U values (in W/m2deg C) Walls: Brick: Plastered both sides 3.24 Solid Un plastered 2.67 Plastered both sides 2.24 Concrete, Ordinary, Dense: -152mm 3.58 -203mm 3.18 Concrete block: CLC Fly ash block 1.19 Hollow Concrete block, 220mm, single skin, outside rendered, inside plastered: CLC Fly ash block 1.70 Roofs Flat Reinforced concrete slab, 100mm, scered 63-12 3.35 mm, 3 layers bituminous felt Floors: Concrete on ground or hardcore fill 1.13 + Grano, Terrazze or tile finish 1.13 + Wood block finish 0.85 Exposure South Sheltered: Single glazing 3.97 Double glazing 6 mm space 2.67

List of Machinery Used during construction Phase  Dumper  Concrete mixer with hopper  Excavator  Concrete Batching Plant  Cranes  Road roller  Bulldozer  Tower Cranes  Hoist

Army Welfare Health Organization