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.131
Outcome of the Weighted Impact Analysis after Taking All the Mitigation
Measures
After implementation of all the mitigation measures, based on the rating criteria, the
WMF is rated as having less adverse impact.
7.5 ENVIRONMENTAL IMPACT STATEMENT
The Environmental Impact Statement has been prepared for the site at Guman Hera.
Based on the environmental settings of the area, project activities and their
environmental impacts, mitigation measures have been proposed to curb the
adverse environmental impacts described in earlier chapters.
The total area of the site is reported to be 56 hectares (140 acres). However, the
area required for developing SLF for 20 years is only 26.35 hectares. The land
has been acquired by Municipal Corporation of Delhi, Govt. of NCT - Delhi.
The site lies in the salt affected area with scattered shrub grass vegetation,
amidst patches of brick Kiln relics and small temporary water pools. The site
falls in structural sag zone. It is located in wastelands within a dominantly
agricultural landuse.
There is no human population within 1 km distance of the site. The nearest village
is Guman Hera, which is 1 km away. The site is adjacent to a "Gaushala" (Cow
shelter). However, there is no regular use by inhabitants in the Gaushala.
The nearest surface water body is Najafgarh drain, which is about 500 m away
from the site.
The groundwater table is available at 4.5 m b.g.l. The base of the landfill should
be atleast 2 m above the groundwater table. So a Double Composite Liner
system is proposed to be installed at the bottom of the landfill to prevent the
percolation of leachate to the ground water. The quality of water at this level is
however, saline. The fresh water aquifer in this area is available at a depth
beyond 35 m bgl.
As reported, the proposed site does not fall under any notified forest.
There is no navigable river or stream within the 100 m distance of the site.
As reported, the proposed site does not fall under flood prone area of the
Yamuna River. Therefore, developing the secured landfill facility at the
proposed site is not having the risk of flood.
The geo-technical investigations results at the site shows that the sub-soil strata
from existing ground surface to 20.4 m depth consists predominantly of fine
grained soils i.e. sandy silt of low plasticity (CL/ML-CL). However, the sub-soil
strata from depth 2.50 to 5.00m consists predominantly of coarse grained soils
i.e. silty sand (SP-SM). The depth to bed rock at the site is more than 300m
b.g.l.
Environment Division, National Productivity Council, New Delhi
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