EIA Studies of 3 Pre-Identified Hazardous Waste Disposal Sites in ...

Rapid EIA Studies of 3 Pre-identified Hazardous Waste Disposal Sites in NCT - Delhi
Page No.132
The quality of the groundwater shows: (I) Lead concentration values exceed 0.05
ppm in 1 U/s, 4 D/s locations, (ii) Hardness values exceed 600 ppm in 8
locations (5 D/s, 3 U/s), (iii) Fluoride values exceed 1.5 ppm in 2 U/s, 2 D/s
locations, (iv) TDS value exceeds 2000 ppm in 3 U/s, 5 D/s locations.
Based on 50 years rainfall data, average annual rainfall is reported to be 905.32
mm.
Based on monitoring of ambient air quality at the site for 3 days (24 hours
continuously), concentration of SPM, SO x and NO x at the site were in the range
of 145 - 160, 1.6 - 1.8 and 1.5 - 2.1 ug/nm 3 respectively. The presence of the
SPM, SO x and NO x in ambient air quality is well below the prescribed national
Ambient Air Quality standards for industrial areas/residential areas.
While carrying out excavation and construction of the landfill, periodic water spray
has been recommended in order to suppress dust.
Based on the findings of EIA studies, the above project can be considered as
less polluting project
The leachate generated secured landfill facility will be collected systematically in
the collection pit and will be pumped to the Treatment Plant for further treatment
before disposal into environment.
To prevent soil erosion after closure of the facility, vegetative cover will be
developed on top of the liner system.
Green belt will be developed surrounding the secured landfill facility in order to
abate air & noise pollution and to reduce the storm water drainage.
The development of this facility will facilitate the systematic collection, storage,
handling, transportation, processing and disposal of the hazardous wastes
generated from 28 approved industrial areas/estates in Delhi without effecting
the surrounding environment. This would result in improvement in the general
environment within the region.
Development of secured landfill facility for disposal of hazardous wastes will
involve many activities as described in the report. This will increase the
opportunities of employment for the local people, which is a positive aspect of
the project.
Continuous monitoring of ground water and ambient air during operation and
closure of landfill facility is recommended to be carried out in the surrounding
area of the facility. This will continue for 30 years even after the closure of the
facility.
Environment Division, National Productivity Council, New Delhi
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