Table 5.81 Summary of sampling workload
Item
Sampling
position
Quantity
Sample No.
Waste soil sample
Within
landfill
3
LW1-1, 9-1, 11-1
Waste humus soil sample
3
LW1-4, 9-4, 11-4
Underlying natural soil
sample under waste pile
6
LW1-2, LW1-3, 9-2, 9-3, 11-2,
11-3
Leachate sample
1
LW1
Peripheral
soil strata
Undisturbed
soil sample
Near
landfill
boundary
10
1-3, 1-6, 4-1, 4-6, 10-2, 10-5,
12-1, 12-5, 15-3, 15-8
Disturbed
soil sample
5
W1D1, W4D1, W10D1, W12D1,
W15D3 (W—Well; D—
Disturbed)
Soil environmental
background sample
1
MW1-1
Groundwater sample
2
MW1, MW2
Table 5.82 Statistical table of roof elevation, lithology and permeability coefficient of stratum
Genesis age
Stratum
No.
Lithology
Roof
elevation
(m)
Recommended value of
permeability coefficient
Artificial deposit
layer
①
Domestic refuse
16.34–17.85 /
① 1
Construction
spoils
19.56–19.62 /
① 2
Clayey silt fill and
silty clay fill
16.85–19.63 /
① 3
Fine sand fill
18.01
/
① 4
Sandy soil fill
17.75–17.95 /
① 5
House building
spoils
19.56–19.62 /
②
Fine sand
15.95–18.16 8 m/d
② 1
Medium sand
13.62–17.53 15 m/d
② 2
Silt
17.2
/
② 3
Clayey silt
7.00E−03 m/d
Quaternary
sedimentary
layer
③
Clayey silt, silty
clay
11.80–14.11 (Vertical) 8.00E−6 cm/s
③
Sandy silt
13.1
/
③ 3
Fine sand
6.95–12.31
/
④
Fine sand
3.21–4.63
/
⑤
Silty clay, clayey
silt
1.26–1.52
/
⑤
Sandy silt
−1.94
/
⑥
Fine sand
−2.44
5.5 North China
267