proposed integrated complex for delhi judicial academy

Rapid Environmental Impact Assessment (REIA) Study for Proposed Integrated Complex for Delhi Judicial Academy,
National Law School, and National Institute for Mediation & Conciliation at Dwarka, New Delhi
During Construction
The major source of water pollution during project construction phase will be sewage from labour
camps and makeshift office. It is expected that at any given time during the construction phase, the
peak manpower strength on construction site comprising of technical staff, clerical/supervisor,
skilled and unskilled workers would be about 1500 persons. The average domestic water
requirements would be about 50 lpcd. Thus, total water requirements work out to be 75,000 litres /
day (max.). It is assumed that about 80% of the water required will be generated as sewage. Thus,
total quantum of sewage generated in peak situation is expected to be about 60,000 litres / day. The
generated sewage would pass through a septic tank and its discharge would be connected to the
existing municipal sewage network of the area.
During Operation
The major source of water pollution during project operation phase will be the wastewater from the
academic and residential complex. During project operation phase, due to the absence of any large
scale construction activities, the cause and source of water pollution will be much different. It is
expected about 235 m 3 /day of sewage will be generated. The expected characteristics of the
untreated wastewater will be as given in Table 5.3. The total BOD loading without treatment will
be of the order of 35 to 60 kg/day. This is significant to cause any adverse impact on any receiving
water body. The impacts that may occur due to disposal of untreated sewage will be mitigated as a
result of commissioning of adequate sewage treatment plant (STP) in the proposed facilities.
Table 5.3
Expected Characteristics of Untreated Wastewater
S. No. Parameters expected value
1. Color Turbid / Grey
2. pH 5.5 – 6.5
3. Oil and Grease 15 – 30 mg/l
4. Total Suspended Solids 180 – 260 mg/l
5. Total Dissolved Solids 1000 – 1300 mg/l
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