EIA Studies of 3 Pre-Identified Hazardous Waste Disposal Sites in ...
EIA Studies of 3 Pre-Identified Hazardous Waste Disposal Sites in ... 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.90 Table 4.15: Geo-technical Investigation Results at Site Located in Village Guman Hera Depth Soil Classification (I.S) Grain size analysis Consistency Limits Gravel % Sand % Silty % Clay % Liquid Limit Plastic Limit Plasticity index G.L 0 - - - - - - - - Coefficient of Permeabilit y, cm/sec 1.00 Sandy Silt of Low plasticity (ML-CL) 2.50 0 41 50 9 25 19 6 5.6 x 10 -5 2.50 Silty Sand (SP-SM) 0 88 12 0 Non Plastic 4.7 x 10 -4 4.00 6.10 5.0 - - - - - - - - 5.5 Sandy Silt of low 4 25 60 11 29 20 9 6.2 x 10 -6 7 Plasticity (CL) 8.5 - - - - - - - - 8.5 2 15 79 4 25 19 6 5.1 x 10 -5 10.00 - - - - - - - - 11.50 4 38 52 6 23 18 5 7.7 x 10 -5 13.00 Sandy Silt of low - - - - - - - - 14.5 Plasticity (ML - CL) 1 35 56 8 27 20 7 4.9 x 10 -5 16.00 14 28 51 7 25 19 6 5.3 x 10 -5 17.50 - - - - - - - - 19.00 Sandy Silt (CL) 20.00 - - - - - - - - 20.00 20.40 3 21 63 13 31 21 10 3.1 x 10 -6 20.40 - - - - - - - - Environment Division, National Productivity Council, New Delhi
Rapid EIA Studies of 3 Pre-identified Hazardous Waste Disposal Sites in NCT - Delhi: Page No.91 Following inference can be drawn from the results obtained: 1. The sub-soil strata from existing ground surface to 20.40m 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). 2. During the field investigation, groundwater table was encountered at 6.10 m depth below the existing ground level. Fig 4.25 depicts the variation of permeability through different strata. Environment Division, National Productivity Council, New Delhi 4
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Rapid <strong>EIA</strong> <strong>Studies</strong> <strong>of</strong> 3 <strong>Pre</strong>-identified <strong>Hazardous</strong> <strong>Waste</strong> <strong>Disposal</strong> <strong>Sites</strong> <strong>in</strong> NCT - Delhi:<br />
Page No.90<br />
Table 4.15: Geo-technical Investigation Results at Site Located <strong>in</strong> Village Guman Hera<br />
Depth Soil Classification<br />
(I.S)<br />
Gra<strong>in</strong> size analysis<br />
Consistency Limits<br />
Gravel<br />
%<br />
Sand % Silty % Clay % Liquid Limit Plastic Limit Plasticity<br />
<strong>in</strong>dex<br />
G.L 0 - - - - - - - -<br />
Coefficient<br />
<strong>of</strong><br />
Permeabilit<br />
y, cm/sec<br />
1.00 Sandy Silt <strong>of</strong> Low<br />
plasticity (ML-CL)<br />
2.50<br />
0 41 50 9 25 19 6 5.6 x 10 -5<br />
2.50<br />
Silty Sand (SP-SM)<br />
0 88 12 0 Non Plastic 4.7 x 10 -4<br />
4.00<br />
6.10<br />
5.0<br />
- - - - - - - -<br />
5.5 Sandy Silt <strong>of</strong> low<br />
4 25 60 11 29 20 9 6.2 x 10 -6<br />
7<br />
Plasticity (CL)<br />
8.5<br />
- - - - - - - -<br />
8.5 2 15 79 4 25 19 6 5.1 x 10 -5<br />
10.00 - - - - - - - -<br />
11.50 4 38 52 6 23 18 5 7.7 x 10 -5<br />
13.00 Sandy Silt <strong>of</strong> low<br />
- - - - - - - -<br />
14.5<br />
Plasticity (ML - CL)<br />
1 35 56 8 27 20 7 4.9 x 10 -5<br />
16.00 14 28 51 7 25 19 6 5.3 x 10 -5<br />
17.50 - - - - - - - -<br />
19.00<br />
Sandy Silt (CL)<br />
20.00<br />
- - - - - - - -<br />
20.00 20.40 3 21 63 13 31 21 10 3.1 x 10 -6<br />
20.40<br />
- - - - - - - -<br />
Environment Division, National Productivity Council, New Delhi
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