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PRE-FEASIBILITY REPORT
2016
M/S. DLF COMMERCIAL DEVELOPERS LTD CONSTRUCTION OF MULTI ACTIVITY COMPLEX
SY. NO: 129, 130, 131, 132, TSHB COLONY, GACHIBOWLI
SERILINGAMPALLY (M), RANGA REDDY DISTRICT
SUBMITTED TO
MINISTRY OF ENVIRONMENT & FORESTS GOVERNMENT OF INDIA
PARYAVARAN BHAVAN, LODHI ROAD NEW DELHI
SUBMITTED BY SV ENVIRO LABS &
CONSULTANTS Visakhapatnam
Phone: 0891-2755528
Email: [email protected] Recognized by MoEF, and QCI –Accredited, S.No.151
S V E N V I R O L A B S & C O N S U L T A N T S E N V I R O H O U S E , B L O C K - B , B - 1 , I D A , A U T O N A G A R ,
V I S A K H A P A T N A M
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1.0 INTRODUCTION
M/s. DLF Commercial Developers Ltd is headed at Gachibowli, Sy.No. 129, 130, 131 & 132 in
Hyderabad with its Registered Office at Shopping mall, Arjun Marg, DLF City Phase- I, Gurgaon,
Haryana.
M/s. DLF Commercial Developers Ltd acquired a land to an extent of 10.61Ha or 106128.0Sq.mts or
26.225 Acres proposes to construct multi activity complex at Sy. No. 129, 130, 131, 132 situated at TSHB
Colony, Gachibowli Village, Serilingampally Mandal, Ranga Reddy District.
In this direction, the company had approached for approvals and clearances from MoEF and other local
authorities for construction of multi activity complex to meet the needs of the society.
It is proposed to construct an IT complex, Commercial complex, Retail shopping and 645 service
apartments (3 podiums + GF + 9 floors), 2 basements for IT/Commercial and 3 basements for retail units
and service apartments.
Environmental clearance have been issued vide No: 21-538/2007-IA.III Dt: 18.06.2008 for a total
built up area of 6,04,651 Sq.mts to construct an IT complex, commercial complex, retail shopping and
service apartments in 2 basements + 3 podiums + G + 9 upper floors.
Applied for EC revalidation to MoEF, New Delhi and obtained EC validity up to 12.01.2016 vide EC
minutes of the 148th meeting held on 21.05.2015.
As of now, IT complex in 3 blocks with a total built up area of 3, 74,642.05 Sq.mts have been
constructed and excavation is in progress for retails and service apartment’s block.
The constructed IT complex is operational and got CFE vide order no. 316/PCB/CFE/RO-II-
RRD/HO/2010-2163 Dt: 20.11.2010 and 316/PCB/CFE/RO-II-RRD/HO/2012-1207 Dt: 22.06.2012
and CFO Order no. APPCB/HYD/RR-II/13415/CFO/HO/2013-5848 Dt: 13.03.2013.
And the balance built up area of 2, 30,008.95 Sq.mts will be completed as soon as possible.
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S.no Licenses No. and Date Built up area Validity period
*1 EC from
MoEF
21-538/2007-IA.III DT: 18.06.2008 6,04,651
Sq.mts
5 Years
18.06.2013
2 CFE from
APPCB
316/PCB/CFE/RO-II-RRD/HO/2010-
2163 Dt: 20.11.2010
6,04,651
Sq.mts
5 Years
20.11.2015
3 CFE From
APPCB
316/PCB/CFE/RO-II-RRD/HO/2012-
1207 Dt: 22.06.2012
14 nos of DG
Sets (11 x 1500
KVA & 3 x
2000 KVA)
5 Years
22.06.2017
4 CFO From
APPCB
APPCB/HYD/RRD/316/CFO/HO/2011
- 2117
13.10.2011 30.06.2012
5 CFO From
APPCB
APPCB/HYD/RR-
II/13415/CFO/HO/2013-5848 DT:
13.03.2013
3,74,642.05
Sq.mts
30.06.2015
6 CFO From
TSPCB
TSPCB/13415/CFO/RO-RR-
II/HO/2015-1292
3,74,642.05
Sq.mts
30.06.2019
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1.1 ABOUT THE PROJECT:
M/s. DLF Commercial Developers Ltd is in the process of construction of Project of multi activity
complex at Sy. No. 129, 130, 131, 132 TSHB colony, Gachibowli, Serlingampally (M), Ranga Reddy
District. The project will be spread over an area of 10.61Ha or 106128.0Sq.mts or 26.225 Acres.
The project of this magnitude would have various positive and negative impacts and the same are to be
addressed during design stage of the project to arrive at mitigation/ management measures. Environmental
impact Assessment is a tool that can be used for identifying, evaluating and for drawing the management
plan.
The area of village has educational institutions and number of residential & commercial apartments.
The area has developed into residential zone over the last 10 years.
The principles of low impact development are adopted during the design stage to ensure storm water
percolation, treated water reuse, energy conservation, and optimized usage of renewable resources
The parking provision follows the guidelines prescribed by HMDA and building policy of Andhra
Pradesh.
The boundaries of the project site is as follows
North - Road/CMC Ltd
South - Residential Buildings
East - Residential Buildings
West - Commercial Buildings
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1.2 Details about Project Site Table: 1
Site Location Sy. No. 129 – 132, TSHB colony, Gachibowli, Serilingampally Mandal, Ranga Reddy District.
Annual rainfall 812.5 mm
Min and max temp. 200C and 45.50 C
Avg. relative humidity 82 %
Avg. wind speed 6.5-20.4 KMPH
Latitude 17°26’51.29”N
Longitude 76°21’24.50”E
Predominant wind direction Summer Winter Monsoon
SE E NW
Nearest Highway NH-9 at 7.0 Kms
Nearest Airport Begampeta Airport
Nearest Railway station Hafeezpet Railway station at 3.85Kms Hi-tech city railway station at 3.85Kms
Nearest Human settlement Gachibowli
Nearest Town Gachibowli
Nearest Seaport None within 10 Kms
Nearest Water Bodies Khajaguda Cheruvu at 3.13 Kms Durgam cheruvu at 4.05 Kms Malaka cheruvu at 4.68 Kms Manikonda Cheruvu at 4.32 Kms Khajaguda Lake at 3.86 Kms Timmidkunta Lake at 2.75 Kms
Nearest Reserved forest None within 10 Kms
Nearest Indoor stadium Gachibowli Indoor stadium – 1.30Kms
Historical places None within 10 Kms
Nearest Hills None within 10 Kms
Nearest Barrage None within 10km Radius
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1.2.1 TOPO MAP
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1.2.2 LAYOUT
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1.2.3 AREA DETAILS:
Plot Area 1,06,128 sq m, i.e. 26.225 acre
Built-up Area
Total Proposed: 6, 04,651 Sq.m.
Construction completed: 3, 74,642.05 Sq.m.
Under construction: 2, 30,008.95 Sq.m.
(NO CHANGE IN PRODUCT MIX FROM THE APPROVED
CONCEPT)
Number of floors 2 Basements + 3 Podiums + Ground + 9 Floors;
Max height: 49.4 m
Parking facilities 8,372 ECS
(Surface: 176 + Basement: 3,543 + Podium: 4,653 )
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1.3 RESOURCE REQUIREMENT: 1. CONSTRUCTION PHASE:
The duration of construction of construction phase of the project is about 10 years from the date of
commencement of the work.
The major requirements of the construction phase include:
a. Construction machinery
b. Power
c. Fuel
d. Water
e. Man power
f. Temporary Housing
2. OPERATIONAL PHASE:
The major requirements of the complex in the operational phase include:
a. Power
b. Water Supply
c. Sewage Treatment Plant
2.1 PROJECT DESCRIPTION It is proposed to construct an IT complex, Commercial complex, Retail shopping and 645 service
apartments (3 podiums + GF + 9 floors), 2 basements for IT/Commercial and 3 basements for retail units
and service apartments.
2.2 WATER AVAILABILITY
Domestic water: It is proposed to draw domestic water from the Municipal Supply (GHMC), which have
been encouraging the bulk consumers. The water shortage if any during summer season will be drawn
from ground water sources. The fresh water requirement of the project during occupation stage is in the
order of 2474 KLD.
The water resource available with the Bore wells and Municipal authorities was studied to identify the
source and feasibility.
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Water Requirement of the project
S.No Purpose Quantity (KLD) 1 Cooling & air conditioning 1890 KLD (Recycled waste water)
2 Filter back wash 120 KLD (Fresh water)
3 Horticulture 85 KLD (Recycled waste water)
4 Domestic 3409 KLD (Fresh water – 2354 KLD + Recycled waste water –
1055 KLD)
Total 5504 KLD
(Fresh water – 2474 KLD + Recycled waste water – 3030 KLD)
2.2.1 WATER BALANCE
2354 KLD
120 KLD 120 KLD
1890 KLD
85 KLD
2.2.2 STP Proposed:
The Sewage Treatment plant of 1350 KLD and 1850 KLD capacity will be constructed separately in two
phases to the total capacity of 3200 KLD.
Mode of Final Disposal:
Treated waste water shall be reused for toilet flushing, cooling, development of horticulture etc.
Domestic (3409 KLD)
Filter Back wash (120 KLD)
Air conditioning & cooling (1890 KLD)
Horticulture (85 KLD)
STP (3200 KLD capacity)
Municipal Supply (2474 KLD)
Treated sewage 3030 KLD
Toilet flushing 1055
3069 KLD 3189 KLD
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2.2.3 SCHEME OF STP
Location of STP:
The proposed STP will be located in the basement of the building
Design Parameters
Capacity of STP: 3200 KLD
Characteristics of raw & treated sewage
Estimated Characteristics of Raw & Treated Sewage
Parameter Raw Sewage (Influent) Treated Sewage (After Tertiary
Treatment)
pH 7.5-8.5 6-8
BOD 3 day, 27°C (mg/l) 250-350 <20
COD (mg/l) 400-500 <60
Suspended Solids (mg/l) 250-450 <10
Oil & Grease (mg/l) 30 <5
Treatment Units:
The STP employs Activated sludge process working on the principle of extended aeration based on Fine
Bubble Diffused Aeration system in secondary treatment followed by tertiary treatment. The treatment
process includes the following unit operations:
Primary Treatment : Oil & Grease separator, Bar screen, Equalization Tank
Secondary Treatment : Aeration tank, Secondary clarifier, chlorine Contact tank
Tertiary Treatment : Multigrade Filter, activated carbon filter and Softener
Sludge Conditioning : Aerobic Digester, Sludge Thickner/filter press
Process Description:
Primary Treatment:
Raw sewage flows through oil & grease separator followed by a bar screen chamber and Equalization
tank. The bar screen is so designed that it can be cleaned manually from outside. Submersible solid
handling pumps are provided in the Equalization tank to pump the collected Raw sewage to the
aeration tank. An automatic level controller is provided in the Equalization tank to turn the pump off at
the predetermined low water level in the tank and to start the pump automatically when water level
reaches the high water level.
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Air is introduced in the Equalization tank through submerged air diffusers, to prevent the sewage from
becoming septic during long retention or low load conditions and also keeping the organic matter in
suspension.
Secondary Treatment:
The raw sewage that comes into the Aeration tank is aerated by using Fine Bubble diffusers mounted
in a grid at the bottom of the tank. Facility is made to pull up the diffusers for cleaning, if necessary.
Air is suspended to the diffusers by twin-lobe rotary air blowers located in the plant room. The
aeration system is designed in a way so as to achieve complete mixing of the sludge organisms with
raw sewage in order to maintain a Mixed Liquor suspended Solids (MLSS) concentration between
3,000 and 4,000 mg/l in the aeration tank.
From the aeration tank, this mixed liquor is taken into the clarifier. The liquid in the clarifier tank is
maintained in quiescent condition allowing the stabilized solids to settle at the bottom of the clarifier
for collection.
Part of the settled solids/sludge (activated sludge) is constantly pumped back into the aeration tank by
sludge recycle pumps. This return sludge undergoes further digestion in the aeration tank and also
provides the active organisms needed to digest the incoming raw sewage besides maintaining the
desired MLSS concentration.
The clarifier is provided with an overflow weir to collect the treated effluent and a scum-baffle to
prevent any floating matter from passing out in the final treated water. Treated water from clarifier
over-flows to the Chlorine contact tank where hypochlorite solution is added to disinfect the treated
waste water.
Sludge Conditioning:
Excess sludge from the bottom of the clarifier is taken to adjoining aerobic digester-cum-baffle to
prevent any floating matter from passing out in the final treated water. Treated water from clarifier
over-flows to the chlorine contact tank where hypochlorite solution is added to disinfect the treated
wastewater.
Tertiary Treatment:
The treated and disinfected water from the chlorine contact tank is passed through a Multi-grade filter,
an activated carbon filter and a softener for final storage in a treated sewage water tank. Water from
this tank is used for the cooling towers of the Air-conditioning system and DG /Gen sets and for
horticulture within the premises. Any excess treated sewage, particularly during lean period, like
winter is reused for toilet flushing. However, there may be occasional discharge into municipal sewer
in case of exigency for which “consent” from the concerned state pollution control board is taken.
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Raw Sewage
Air Chlorine
Air
Sludge Recycle
Manure
Horticulture
Recycle Toilet Flushing
Cooling towers
Schematic Flow Diagram of the Sewage Treatment Plant
2.3 Storm Water Drainage and Rainwater Harvesting
Storm Water Drainage System
The rainwater will be collected through piped drains and conveyed into rainwater harvesting system.
All storm water drains have been designed for adequate size and slope such that there shall not be any
Oil & Grease Separator
Screen Chamber
Equalization Tank (With Air Diffusers)
Aeration Tank (With Air Diffusers
Clarifier Chlorine Contact cum Treated effluent Tank
Sludge Holding Tank
Sludge Dewatering
Multi Grade Filter
Activated Carbon Filter
Softener Soft Water Tank
Flush Water Tank
Garden Water Tank
U V Filter
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flooding in the site. It shall be ensured that no waste water shall enter into storm water drainage
system.
Rain water Harvesting Plan
Adequate rainwater harvesting will be provided by means of recharge into ground water. The details
are given below:
The rainwater collected from the rooftop and other paved areas within the project area will be
conveyed into the rainwater harvesting system consisting of Desilting-cum-filter chamber, oil &
grease separators and boreholes for recharge into the ground water. The collected rainwater after
passing through Desilting-cum-filter chambers would be injected into the ground water aquifer
through percolation boreholes. Oil & grease separators will be provided prior to the Desilting-cum-
filter chambers to arrest and separate any trace oil present in the rainwater. Requisite number of
rainwater injection boreholes will be provided.
2.4 SOLID WASTE GENERATION
S.no Solid waste
generated from
Quantity Method of Disposal
1 Organic waste 2768 Kg/Day Shall be converted into manure by
organic waste converter
2 Non Biodegradable
waste
9232 Kg/Day Shall be disposed to the municipal
dump site
3 Waste oils 7000 LPA Shall be disposed to authorized
reprocessing units
2.5 DG Sets
S.no Details of stack Stack -1
1 Attached to DG Set
2 Capacity 11 x 1500 KVA, 8 x 2000 KVA & 1 x 1010 KVA
3 Fuel used Diesel
4 Stack Height As per CPCB norms
e Control Equipment Acoustic enclosure
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2.6 ELECTRICITY CONSUMPTION
The electricity requirement is 38 MW
Energy Conservation Measures:
Energy Efficiency Measures
a. Usage of CFL lights and high efficiency lamps
b. Usage of high efficiency transformer
c. Usage of high efficiency motors for utilities
d. Usage of VFD drives for lifts, Pumps etc.
e. Minimum required light power density
f. The lighting levels will be selected to suit the functional requirements
g. Conventional switching arrangements using conventional switch plates will be provided
wherever required. Lighting control for common circulation areas will be based on timers.
Staircase lighting will be controlled by the switches within the staircase to ensure that the
lighting is ‘on’ when desired.
h. External lighting will be provided to illuminate Ground Floor main entrances, pathways,
parking areas and roadways. Feature lighting will be provided to enhance the architectural
features of the building. External lighting will be controlled by timers. The landscape lighting
will be based on recommendations of landscape architect.
Eco-friendly Measures:
1. Exploring possibilities of using Solar Lights
Others:
The security will be handed over to a private agency. Water conservation measures will be updated
frequently and all the residents will be educated periodically.