The document provides details on the water supply, sewerage, drainage and power requirements for a proposed special economic zone in Sohna, Haryana. It estimates that the total water requirement will be 714 kilolitres per day to meet the needs of residential, commercial, institutional and IT developments. Storm water drainage and rainwater harvesting systems are also described to recharge groundwater and maintain water balance. The power demand for the development is estimated to be 9 megawatts, sourced from the local grid and distributed via an 11kV network. Street lighting designs and operations are outlined.

1. PRELIMINARY REPORT ON REQUIREMENT FOR WATER SUPPLY
SEWERAGE AND DRAINAGE FOR THE PROPOSED OF SPECIFIC
ELECTRONIC /IT /ITES SPECIAL ECONOMIC ZONE VILLAGE
SOHNA, TEHSIL DISTT. GURGAON.
GENERAL:
Total Plot Area : 25 Acres
This is to propose to develop Residential, Commercial, Institutional, Electronic IT Centre etc. in the
above area approximate proposed area of various activities is as under:
Sl. Type of Area in Built up Basis of Total
No. Development Acres Area in Sqft. Population Population
1. Residential 40% of 10 759,000 Considering 500x5=
25 acres average unit
area of 1500 2500
Sqft. With 5
occupants
2. Commercial 16.33% 1.5 54,000 Table 20 of 830
of 25 acres NBC Occupant
load 6
Sqm/person or
(64.55 Sqft)
3. Star hotel 4% of 1 44,000 Table 20 of Total build up
NBC Occupant rooms will be
25 acres load 15 75
Sqm/person or
(167.4 Sqft.) 260 person
4. Processing 12.50 500,000 NBC Occupant With IT.
load 10
IT Park etc. Sqm/person or Tower
(107.6 Sqft)
50% of 25 acres 5000 person
TOTAL 25 Acres 1,357,000
WATER SUPPLY:

2. Domestic water required per head per day as per National Building Code 2005, Table 1, Part 9, and P
19, Plumbing services:
a) Residential : 150 Liters X 2500
b) Commercial : 45 Liters X 830
c) Institutional : 45 Liters X 260
d) Factories/IT parks
With no Bathroom : 30 Liters X 5,000
Total Water requirement:
a) Residential : 150X2500 = 375,000 or 375 KL
b) Commercial & Institutional: 45X 1,090 = 49,050 or 49 KL
c) IT parks with no Bathroom : 30X 5,000 = 150,000 Liters or 150 KL
In addition to daily domestic requirement water will be required for Horticultural proposes considering
20% green area – 05 acres
Water required for Horticultural : 5 X 28000 = 140,000 Liters or 140 KL
Grand Total : 375+49+150+140 KL Say: 714 KL
Sources of water : Three Sources of water are considered as under:
City Supply from Govt./ Local Authority.
Development of deep Tube wells at site.
Recirculation of treated sewerage effluent after Tertiary treatment of Horticultural &
Flushing proposes for urinals and water closets.
City supply will be supplying water to the complex when it is available from the local authorities.
Development or Tube well : A detail Geophysical survey of the site was got5 done through M/s The
reliable water supply Service of India (P) Ltd. new Delhi at there different point. The water / Aquifer is
available 27-65 Mtr. Depth with expected field of 1000-12000 LPH (Report Attach). Considering a
discharge of 10,000 – 12,000 Litres/hr and working for 12 hr. per day.
Expected discharge for one tube well : 12000 x 12 = 144,000 Liters or 144 KL

3. Number of tube well of required : 714 / 144 = 4.95 say 5 tube wells.
Available water from Horticultural & flushing purpose.
C) Recirculation of Sewerage Effluent : 80% of water supply will flow as Sewerage.
= 0.80 x 714 KL = 571 KL
Horticultural water required per day
Flushing water required per day:
a) Residential flushing requirement = 2500 x 50 Litres/head/day = 125 KL
b) Commercial Flushing requirement = 1090 x 15 Litres/head/day = 16.35  say 17 KL
c) IT Park flushing requirement = 5000 x 15 Litres/head/day = 75 KL
Total 217 KL say : 217 KL
Balance treated sewage effluent will be recharge to Ground = 125-17-75 = 217 KL
Therefore actual no. of Tube wells required = (571-217) = 354/144 – 2.5 No.  say 3 Nos.
Or 20% as stand by = 3 + 0.6 = 9.81 say: 3.6 or 4 Nos.
Total No. of Tube wells required: 3~4 Nos. Till city supply is available at full development of site.
STORM WATER DRAINAGE:
The total rainfall in the area as per table 1 rainfall data from major cities by Indian metrological
Development is 794 mm as per Rain Water Harvesting and Conservation manual.
Total rain water based on anove basis per year considering 80% of rainfall recharging the ground water
table. 25X 40000 X 0.794 X 0.90 = 714,600 KL per year.
This rain water is completely recharged to ground water by providing 8~9 rain water harvesting well,
each rain water harvesting well, will cover an area of approximately 3 acres.
Total recharge from rain water per year = 714,600 KL per year
Sewerage treatment plant effluent Recharged to ground water per year, 365 X 194 = 157,680 KL per
year. Total requirement will be = 157,680 KL per year

4. Water withdrawal from ground water by developing tube wells per year = 365 X 194 = 157,680 KL per
year. Thus there is no effect on Ground water table in the area as water recharge and withdrawal are
almost equal. Detail of Rain Harvesting well and sewage treatment plant are attached.
RAIN HARVESTING WELLS
The total site of 25 acres will be divided into small pockets varying from 1~2.5 acres depending upon
layout. Each pocket will have independent harvesting well. The rain water from roofs will be taken
down through vertical stacks. The sizing will be as per national Building Code Table No. 28 part -9
Section 2 Pages -70. The vertical drain pipe will be connected to manhole at ground level. Manhole
will be interconnected and finally taken to harvesting well. A desilting chamber will be provided to
desilt and remove floating material through bar screen. The overflow will lead to chamber having filter
media of coarse sand 1.5 to 2mm. Gravel 5-10 mm and boulders 5-20mm with minimum 300mm thick
each layer/ One deep bore up to sub soil water table will be drilled and 160mm PVC 3mm perforated
pipe will be installed up to sub soil water table with P – Gravel around the pipe. The solid pipe will be
provided between filtering media and ground level to clean in case of blockage through Air
Compressor etc. The schematic diagram is attached.
Working of Sewerage Treatment Plant:
The complex will be decided into four – five zones and sewage under ground plants will be on 80% of
water supply rate. . Incoming sewage is at a level of 4-5m depth from ground. This is collected in an
incoming sump which has a screen fixed at the entry of the sump. A cat ladder and manhole is provided
for maintenance point of view. Two automatic sewage submersible pumps are provided to lift the liquid
to grease chamber and then to tube settler system with level control or ensuring automatic operation.
And than to aeration tank the sewage undergoes aeration and subsequent attached growth. This results
in increased aerobic suspended growth and attached growth systems. From aeration tank the effluent
over floors to clarifier for setting solid & the tanked effluent to tank and than pumped to filter.
Sewerage is collected in an incoming sump which has a screen fixed at the entry of the sump. A cat
ladder and manhcle is provided for maintenance point of view. Two automatic sewage submersible
pumps are provided to transport liquid to the bio-reactor system with level control for ensuring
automatic operation. The incoming sewage is lifted to the bio- reactor system.
Further treatment in the form of Tertiary treatment through Filter Vessels is done. Before feeding water
to Filter vessels, slight dose of chlorine is added to stream and water is passed on the twin set off
aesthetically designed Pressure sand filter and Activated Carbon filter.
Whereas Pressure Sand filter removes very fine suspended particles in the Discharge Stream, Activated
Carbon Filter removes traces of any impurity as well as any dour or colour inherent in the stream. BOD
and COD of water are further reduced during filtration. Water after Tertiary Treatment is fit for use for
flushing water for water closets, irrigation in kitchen gardens, lawns for Horticulture purposes.

5. P roposed Plotted Development at SEZ at Village Sikohpur, Tehsil Sohna. Distt. Gurg
aon, Haryana.
D esign Concept Report
1. Objective:-
The design concept report aims to highlight the design parameters adopted along with scheme
for power distribution for 25 Acres SEZ Sohna, District. Gurgaon, Haryana.
2. Load Criteria:-
An overall diversity of 80% has been considered. These have been considered on the basis of
norms given by Local Electricity Board.
3. Source of Power.-
It has been assumed that multi point supply connection shall be taken from Local Power Supply
Company. As per the load calculations enclosed in the report, the total demand load envisaged is
9.0 MW. Power shall be received from DHBVNL at 66KV depending upon the availability of
line in the near by area. The 66KV power received shall be stepped down to 11 KV at one
location based on load pattern of site. The 11 KV power shall then be distributed with 11 KV
overhead lines in all the areas. The total power required for immediate construction shall be 180
KW.
Street Lighting
Distribution
Proposed plotted Development at SEZ at Sohna Distt. Gurgaon for street-Lighting shall be distributed
through distribution pillar which shall be located in various load centers. From the distribution pillars,
the street- lighting shall be connected through XLPE insulated Aluminium conductor armoured cables
laid in ground of required size, considering voltage drop and current carrying capacity.
Illumination Levels,
SL. Road Mounting Level of Type of Fixture
No. Width Height Lighting
1. 18.0 Meters 10 Meters 15 Lux 1 Nos. 250 W HPMV fix/
150W SON fixture

6. 2. 12.0 Meters 10 Meters 15 Lux 1 Nos. 250 W HPMV fix/
150W SON fixture.
3. 9.0 Meters 10 Meters 15 Lux 1 Nos. 250 W HPMV fix/
150W SON fixture.
4.3 Pole Design
18 Meter wide roads shall be provided with one single arm pole with 2 meters overhang
installed on either side of the road in staggered manner.
Proposed plotted Development at SEZ at Sohna Distt. Gurgaon 12 Meter wide roads shall be
provided with single arm pole with 1.5 meters overhang installed on one side of the road. 9
Meter wide roads shall be provided with single arm pole with 1.5 meters overhang on one side
of the road .
Operation & Maintenance
The street-lighting is proposed to be operated with timers located in the distribution pillars and
shall be operated as follows:
6 PM to 10 PM - 100% Lights on
10 PM to 2AM - 66% Lights on
2 AM to 6 AM - 33% Lights on
This system shall facilitate in energy saving as well there is no need to switch on the lights
throughout the night. This shall also facilitate control of level of illumination with reference to
the density of traffic. The distribution o street- lighting shall be done on 3 phase system.
For designing conventional poles shall be considered.