ENVIRONMENTAL REPORT FOR HOUSING...

ENVIRONMENTAL REPORT

FOR

HOUSING COMPLEX

AT

R.S. and LR Dag No 4277, 4278, 4279, 4280, 4281,4282, 4283, 4284 and

L.R Khatian Nos 10494, JL no 2, Mouza- Gopalpur, Ward No-5,

P.S- Airport, Dist- North 24 Parganas, under Rajarhat Gopalpur

Municipality Kolkata-700136.

DEVELOPER

BRL ESTATES (P) LLd.

493B, G. T. Road, Warehouse NO M7,

Bengal Jute Mill Compound,

Howrah- 711102

SUBMITTED BY

CAESCON ENGINEERING SERVICES (PVT.) LTD.

74, SARAT CHATTERJEE ROAD, LAKE TOWN

KOLKATA- 700089

211 B U S R O U T E

211 BUS ROUTE

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V. I. P. R O A D

TO AIRPORT

TO ULTODANGA

Environmental Impact assessment report for B+S+G+5 Storied building at R.S. and LR Dag No

4277, 4278, 4279, 4280, 4281,4282, 4283, 4284 and L.R Khatian No. 10494, JL no 2, Mouza-

Gopalpur, Ward No-5, P.S- Airport, Dist- North 24 Parganas, under Rajarhat Gopalpur


Prepared by CAESCON Engineering Services Pvt ltd , 74 Sarat Chatterjee Road , Kolkata 70089

Proposed by BRL ESTATES (P) Ltd , 493B, G. T. Road, Warehouse NO M7,

Bengal Jute Mill Compound, Howrah- 711102

1. Existing Land use The land had been used as residential area since long past. The land was covered with one

storied building and garden with seasonal flowers and vegetables for own use.

2. Site location The site is situated at 2 Km from the 6 lane Road from VIP road to Rajarhat New Town area.

The site is situated on 90ft wide road beside Derojeo College. The Road in front of the

premises is Bus Route. The site is lying at the edge of sprawling township of Rajarhat.

The location plan is attached as sketch

Surrounding features The land had been used as residential area. The land was almost a

vacant land with small residential building. The Site is butted and bounded as follow

North Road (Bus Route).

South Multi storied building under construction.

East One/ two storied residential building and vacant land

West Derogeo College

The surroundings of the plot is mainly residential area, with multi storied apartment building

The closest apartment building is at about 500m away from the site. The site is within 1 Km

from the City Centre II.

The photograph showing present land use and surrounding features is attached .

Topography The site has defined boundary and bounded in proper manner without any

dispute. The site plan is in conformity with the site plan approved by the Municipal Authority.

The ground terrain is more or less plain.

The site plan in in 1: 500 is attached as sketch no2.

Description of the project.

Area of Land- 115 K 8 ch 39 sft , (7738.16 sqmt) site plan attached

Built up area - 20440.06 sqmt








2- Bed room apartment - 32nos

3- Bedroom apartment - 91nos

4- Bedroom apartment – 15 nos

Car parking - 181 nos

Expected cost of the project: 30 crores

Height of the Building 20.55mt (B+S+G+5 - storied)

Open space – 55.84 % of the land area

Rear Open space is minimum 11.0 mt (avg.)

Side open space is minimum 7.5mt on East side & 8.9mt on west side

Joint open space is 13.0mt

Front open space is minimum 3.5 mt

Community facility is provided at by and large with the following provision

Gate –goomty

Community Hall Indoor games

Lawn with sitting arrangement Swimming pool Multi Gym.

Restaurant SPA SWANAROOM

Existing land use was a residential garden house. BRL ESTATES(P) Ltd purchased the property.

Along with the proposed development the area surrounding the premises will be developed.

Though the discharge of waste water will be increased through a housing complex but the area will

be developed to accommodate all those as municipality will earn a huge revenue through taxation

of 138 flats.

The area is almost in the heart of the city. Here development will take place and there will be no

factor which may cause ecological imbalance.

Soil report is attached in Annexure E. Slope analysis is not required. Since the land is plain there is

no chance of subsidence and pile foundation is designed there is no Chance of subsidence.

Considering the topography of land there will be no natural drainage. All drainage water will be

collected thru the pipes and the same will be discharged for water harvesting and rest excess water








will be discharged at Municipal drain.

Involvement of earth work

Earth work 20 000 cum

Filing work 4000 cum

Reclamation 3000 cumt

Water supply requirements during construction

Item Quantity of item Water requirement

Demand of water

Total volume of concrete

4300 cum 4400KL

PeakDemand 50 cum 7KLD Peak- 13.5 KLD

Average 15 cum 2KL Average – 8.5 KLD

Consumption by labour staying in campus

50 nos 6.5KL

Water supply from Municipality will be accumulated in the reservoir. Application will be made for 10KLD of construction water

Waste Handling

Bio degradable waste will be disposed in Municipal Vat.

Bags of cement will be sold for recycling.

Minimum debris will be generated which will be reused as base course of road.

Wet land There is no low lying area at site.(BLRO certificate is attached) Disposal of debris during construction Since the construction debris will be minimum as controlled casting will be done with the

batching plant setting at site itself. AAC block and sandwiched concrete panel partition will be

used eliminating all debris as usually generated by bricks. The excess debris if any will be used

for base course of road construction.








2.WATER ENVIRONMENT

Water Supply after construction

No of inhabitants in 138 flat is assumed to be 700 nos

Hence demand of water will be 94.5 KLD considering 130L/capita demand.

There will be Municipal water supply of about 50 KLD which will be collected in two tanks

and the rest amount will be collected from bore well which will be done on at the site as

shown in the site plan with prior permission of the appropriate authority..

Water harvesting of storm water has been planned to recharge in the ground water as well as

accumulation in the water body to utilise for cleaning car, gardening and common washing &

cleaning.

Total Quantity of water required

Nos of inhabitants

per capita water demand (L)

Quantity of water (cum)

700 130 91

From water harvesting

From STP +MPL

Drinking 5 700 3500

Toilet flushing 50 700 10000 25000

Bathing 30 700 21000

Washing clothes 15 700 10500

Washing utensils 20 700 14000

Gardening and car washing 10 700 7000

Total 130 17000 74000

Collection of rain water

Collection area 3417.2 Sqmt From roof

Yield coefficient 0.9

Collection area 3075.4

Rain fall 1.524 Mt

Av. Daily rainfall collection 12.85 Cumt From roof








Daily collection from paved are (30%0f land area)=.25x7738x.6x1.524 4.8 Cumt

Rain water consumption 17.65 Cumt Capacity of STP 50 KLD (collected from bathing and biodigester)

Water demand - 91 KLD

Municipal supply - 40KLD (minimum)

From water harvesting 15 KLD

Recycled thru STP 36 KLD (minimum)

Storm water Management & Mitigation of Heat Island Effect

i. There will be 20% land area as green area which will absorb water directly thru filter bed.

ii. Total paved area of site under driving, roads, paths or any other use is 25 %of the site area.

iii. Minimum 40% of paved area at site will have pervious paving.

iv. Adequate storm water drainage network is designed for the project without disturbing the

surrounding. There will be discharge bore well at 50mt interval to eliminate any accumulation

/flooding of water in the area and thus the shock load on the municipal drainage system and

impact on receiving water body will be reduced.

v. Disruption to the natural hydrology of the site will be minimised by reducing impervious cover,

increasing on site infiltration and managing storm water runoff.

vi. Heat island effect is also minimized by planting around 190 nos trees around streets, side walks,

buildings. White roof is provided in the buildings.

Other source of water

If Municipal supplied water is not sufficient boring will be done to avail ground water with the prior

permission of the competent authority. For bore well from local investigation it is observed that

from bore well yield will be minimum 6500 lit per hour.

However 20 % of the water will be recycled for use at commode flush, gardening, carwash and

cleaning of common features.

Rain Water Harvesting Scheme

i. The proponent shall follow the Rainwater Harvesting Guidelines of the State Expert Appraisal

Committee( SEAC) available in the website (http://www.wbpcb.gov.in).

ii. Rainwater will be collected from rooftop catchments and reuse for various purposes after.

Water bodies will be created and used for storing rainwater. Adequate retention time and

http://www.wbpcb.gov.in/








storage provisions will be provided for harvesting rainwater.

iii. The subsurface recharge shall be done according to the norms of State Expert Appraisal

Committee. The total quantity of the rainwater which would be harvested is approximately

17650 cumt per year including surface storage and subsurface recharge.

iv. Provision of adequate fire fighting storage has been provided as per norms.

Collection of rain water

Collection area 3417.2 Sqmt From roof

Yield coefficient 0.9

Collection area 3075.4

Rain fall 1.524 Mt

Av. Daily rainfall collection 12.85 Cumt From roof Daily collection from paved are (30%0f land area)=.25x7738x.6x1.524 4.8 Cumt

Rain water consumption 17.65 Cumt (The amount that will be used for gardening ,toilet flushing and washing cars) Solid Waste Management

i. The solid waste will be disposed off at Municipal Vat according to the regulation

of municipality. The Solid Waste will be stored by segregating of biodegradable

and non-biodegradable wastes.

iii. The Hazardous Wastes will be collected and stored carefully during Pre-

construction and Post-construction activity .The expected hazardous wastes shall

be disposed off separately as per the Hazardous Wastes (Management, Handling

and Transboundary Movement) as per Municipal authority’s system.

iv. Spent oil from DG Sets shall be stored in HDPE drums in isolated covered facility

and disposed off as per the Hazardous Wastes.

4. VEGETATION

i. The unit will abide by The West Bengal Trees (Protection and Conservation in Non Forest Areas)

Rules, 2007. 190 nos trees plantation are proposed. Green area of 20% of the total area is

maintained as per plan.








ii. The landscape planning will include plantation of deodar,Krisfnachura, Coconut trees, Mango

trees and various seasonal flower garden.

5. FAUNA Not applicable

6. AIR ENVIRONMENT

i. Use of public mode of transportation, like E- rickshaw /Battery operated cars shall be promoted

for the residents and others. Use of the least polluting type of transportation shall be promoted.

Adequate parking space has been provided as per norms.

ii. Pathways are surrounded by grassy and planted area. Car park outside the building will be

covered or shadowed by tree canopy. Transport system should be such that traffic will be calm

in neighbourhoods..

iii Both internal and external traffic planning and management are proposed

adequate to ensure unit erupted traffic movement in the area during

construction as well as operation phase.

iv. The design of service road and the entry and exit from the project area shall

conform to the norms & standards of competent authority for traffic

management.

7. AESTHETICS

The proposal will not have any adverse effect over the environment since the adjacent area is

under developed. The proposal is made by considering the elevation of buildings and the

landscaping to enhance the look and feel aesthetic.

The panoramic view is attached.

8. SOCIO-ECONOMIC ASPECTS The project is situated in the midst of residential area inhabited by lower middle class to upper

middle class. The proposed housing s will be occupied by middle to upper middle class. Hence socio

economic contrast in living will not be visible.

The project when implemented for lower middle class & poor people a sustained nos. of








employment will be generated, such as domestic helps, gardener, STP and pump operator,

personnel for maintenance etc. Hence the economic development will take place in the area. Shops

& service centre will also be developed in the vicinity to cater the need of abou 700 incoming

inhabitants. Thus the overall growth of the area will happen.

9. BUILDING MATERIALS

Selection of materials for better energy efficiency will be done.

i. Use of energy efficient construction materials like AEC blocks with fix-o-pool/stucco plaster will

be used to ensure water efficient construction as well as to provide thermal efficiency..

ii. Design layout ensure adequate solar access and ventilation. Proper planning and window design

for daylight integration has been considered during planning the flats.

iv. Construction shall conform to the requirements of local seismic regulations. The structural design

has been done with STAAD Pro considering wind load Seismic load with combination of Dead

load &live load according to the IS codes and standards.

v. Construction technologies that require less material and possess high strength shall be adopted.

Materials with low embodied energy and high strength shall be used preferably.

vi. Use of alternate building materials and alternate construction techniques shall be considered

apart from the conventional materials and methods. Use of panelled fibre concrete as partition

wall has been considered for use which will require no plaster, no curing and no water.

vii. Use of energy efficient lighting systems e.g. High Pressure Sodium Vapour(HPSV) Lamps, LED etc.

shall be promoted. Solar energy will be used for outdoor lighting. Atleast 25% of external lighting

will be based on solar power, as proposed. CFL is not recommended, instead LED lights should

be used.

viii. Passive solar cooling has been in corporated in building design.

ix. Proper insulation of roof will be provided to achieve desired thermal comfort. Use of light

reflective coloured roof has been planned to reduce temperature by 5 degree celsius.

x. Use of highly reflective pavements to keep parking lots, pavement sand inside roads cool shall be

incorporated.

xi. Guidelines to the occupants will include usage efficiency measures such as energy efficient

lighting and water efficient system.

xii. Reduce hard paving onsite (open area surrounding building premises)and/orprovide shade on

hard paved surfaces to minimize heat island effect and imperviousness of the site.

xiii. Adequate open space, greenery and water bodies are provided as per rules.








10. ENERGY CONSERVATION

Details of the power requirements, source of supply, back up source etc.

Name of Block Common load requirement (KW)

Load of Apartments except common load(KW)

Load during construction (KW)

A 14 450 75 KW

B 14 350

Club and street light 25 25

Total 825

Plan for power back up

a. WBSEDCL Multi point LV & MV metering is the source of supply. b. DG is the back up source. c. Considering practical basis as per electrical drawing plan with combination of NBC d. Proper planning, using low energy consumption electrical fixtures & gadgets, automation or semi automation etc. DG set of 2nos x 300 KVA with synchronization or 1 no 600KVA

Ensure Energy Efficiency

i . Use of energy efficient construction material to achieve the desired thermal comfort is

incorporated. The desired level of Rand U factors must be achieved. Ufactor for the top roof shall

not exceed 0.4Watt/sq.m/degree centigrade with appropriate modifications of specifications and

building technologies.

ii. The lighting design and the heating, ventilation and air conditioning systems shall

conform to the recommendations of the Energy Conservation Building Code 2007 of the Bureau of

Energy Efficiency, GOI, wherever applicable.

iii. Use of energy efficient electrical systems should be promoted. High efficiency lamps with

electronic ballasts shall be used.

iv. Energy efficient Motors and properly rated Transformers will be installed.

Manufacturer’s certificate to this effect shall be obtained and kept on record. Back up power

supply shall be based on cleaner fuel.








v. The power cabling will have adequate size so as to maintain the distribution losses not

to exceed 1% of the total power usage. Record of transmission losses shall be maintained.

vi. Solar energised electrical lighting for street and water heating will be provided.

11. Environment Management Plan

i. The implementation of Environmental Management Plan will be carried out, as proposed.

Regular monitoring shall be carried out during construction and operation phases.

Guidelines to the users will be provided to ensure conservation of energy and water.

Inhouse environmental awareness campaigns shall be carried out at regular intervals to

ensure environmental protection.

ii. Fire fighting systems is designed incompliance with the WBFS and NBC norms. Preventive

measures shall be adopted or Risk & Disaster Management as per the provisions of the

NationalBuildingCode2005.

iii. The project proponent has obtained NOC for Height Clearance from the

Airports Authority of India.

Iv The Corporate Social Responsibility Plan with specific financial commitment shall be

implemented for the proposed project. At least 3% of the project cost will be utilised for

Corporate Social Responsibility programmes.

V . Environmental Management Information System shall be maintained properly.

ENVIRONMENTAL REPORT FOR HOUSING...

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