proposed integrated complex for delhi judicial academy

proposed integrated complex for delhi judicial academy proposed integrated complex for delhi judicial academy

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23.04.2015 Views

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 to minimize the noise levels including the mandatory use of construction equipment with operable mufflers. 5.3.2 Impacts During Operation During operation, the DG set and central air conditioning plant will be the point sources of noise pollution in the complex. The DG set room, compressor and pumps room will be isolated from the outside environment and proper acoustic arrangements will be made to control the noise generated from the rooms. The noise levels out side the room will be maintained within the stipulated norms both during the day and night time. The effect of high noise levels on the operating personnel in the DG, compressor and pump rooms will also be considered and appropriate mitigation measures would be adopted. The continuous exposures to high noise levels above 90 dB(A) affects the hearing capacity of the workers/operators and hence would be avoided. To prevent these effects, it has been recommended by Occupational Safety and Health Administration (OSHA) that the exposure period of affected persons be limited as given in Annexure 3. 5.4 Impacts on Water Environment 5.4.1 Impacts on Ground Water The proposed project does not have the potential of impacting the ground water quality and quantity in a significant manner in the long term during the operation phase. The project would likely to withdraw groundwater at maximum rate of 5 m 3 /hr to meet its daily requirement of about 297 m 3 /hr. However, the new buildings, parking lots and other built up facilities would decrease the natural infiltration rate of rainwater. Also, since the project area is experiencing the increasing number of borewells, the cumulative effects could enhance the degree of impact of the individual system. The quality of groundwater could deteriorate in terms of nitrate, fluoride, and chloride, if the abstraction of groundwater over a longer period leads to further lowering of the ground water table. However, with the project proposing to implement the rain water harvesting for ground water recharge, conservation through education to bring about greater water efficiency, and reuse of 104

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 treated wastewater on the proposed site during operation of the project for use in horticulture and other auxiliary purposes, the effect would be minimized. The wastewater generated will be treated and reused within the campus. About 6-8 m 3 /hr of treated water will be reused for flushing of toilets and horticulture purpose. It is also expected that there will be a significant increase in the municipal piped supply of water with the augmentation of the capacity of the water treatment plants in the area in near future. Both these measures along with implementation of rainwater harvesting and conservation measures would have positive impact on the ground water quality and quantity. These measures would reduce the fresh intake quantity from the ground water. Groundwater was tested at the project site and was compared to IS: 10500 (1991) for evaluation. Most of the parameters are observed to be within the limits prescribed by this standard. Since no wastewater from the complex will be discharged into the open, no impact on groundwater quality is envisaged. The water requirement during the construction phase will be partly met through tankers and in limited case through borewell and hence no adverse impacts on ground water are envisaged. 5.4.2 Impacts on Piped Water Supply Water consumption in the proposed residential and academic complex is estimated to be about 297 m 3 / day. About 60% of this consumption will be met through the municipal piped water supply and the remaining will be from the ground water. The increase in water demand from the existing water supply network would decrease the number of supply hours for the existing users in the project area. It is expected that the increase in water demand will be met from additional water available from new water treatment which is being proposed in Dwarka and will come soon and hence would not have any significant impact on the existing water supply. Moreover, by setting up of the STP on-site, the consumption of fresh water intake would likely to be reduced. Also, with the present water supply potential of the existing system i.e. 74 lpcd, the demand for the proposed complex could easily be met. During construction phase, no demand will be put on the existing piped water supply network and will be partly met through tankers and partly from the ground water. 5.5.3 Impacts Due to Wastewater Generation 105

Rapid Environmental Impact Assessment (REIA) Study <strong>for</strong> Proposed Integrated Complex <strong>for</strong> Delhi Judicial Academy,<br />

National Law School, and National Institute <strong>for</strong> Mediation & Conciliation at Dwarka, New Delhi<br />

treated wastewater on the <strong>proposed</strong> site during operation of the project <strong>for</strong> use in horticulture<br />

and other auxiliary purposes, the effect would be minimized. The wastewater generated will be<br />

treated and reused within the campus. About 6-8 m 3 /hr of treated water will be reused <strong>for</strong> flushing<br />

of toilets and horticulture purpose. It is also expected that there will be a significant increase in the<br />

municipal piped supply of water with the augmentation of the capacity of the water treatment plants<br />

in the area in near future. Both these measures along with implementation of rainwater harvesting<br />

and conservation measures would have positive impact on the ground water quality and quantity.<br />

These measures would reduce the fresh intake quantity from the ground water.<br />

Groundwater was tested at the project site and was compared to IS: 10500 (1991) <strong>for</strong> evaluation.<br />

Most of the parameters are observed to be within the limits prescribed by this standard. Since no<br />

wastewater from the <strong>complex</strong> will be discharged into the open, no impact on groundwater quality is<br />

envisaged.<br />

The water requirement during the construction phase will be partly met through tankers and in<br />

limited case through borewell and hence no adverse impacts on ground water are envisaged.<br />

5.4.2 Impacts on Piped Water Supply<br />

Water consumption in the <strong>proposed</strong> residential and academic <strong>complex</strong> is estimated to be about 297<br />

m 3 / day. About 60% of this consumption will be met through the municipal piped water supply and<br />

the remaining will be from the ground water. The increase in water demand from the existing water<br />

supply network would decrease the number of supply hours <strong>for</strong> the existing users in the project<br />

area. It is expected that the increase in water demand will be met from additional water available<br />

from new water treatment which is being <strong>proposed</strong> in Dwarka and will come soon and hence would<br />

not have any significant impact on the existing water supply. Moreover, by setting up of the STP<br />

on-site, the consumption of fresh water intake would likely to be reduced. Also, with the present<br />

water supply potential of the existing system i.e. 74 lpcd, the demand <strong>for</strong> the <strong>proposed</strong> <strong>complex</strong><br />

could easily be met.<br />

During construction phase, no demand will be put on the existing piped water supply network and<br />

will be partly met through tankers and partly from the ground water.<br />

5.5.3 Impacts Due to Wastewater Generation<br />

105

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