Page 346 - Soil and water contamination, 2nd edition

Patterns in groundwater 333

Chloride Distance from landfill (m) NVOC Distance from landfill (m)
0 50 100 150 200 250 300 0 50 100 150 200 250 300
m above sea level 40 m above sea level 40
38
38
36
36
34
34
32
32
30
28 30
28
26
26
200-500 50-100 > 75 25-50 5-10
100-200 < 50 mg l -1 50-75 10-25 < 5 mg l -1
Methane Distance from landfill (m) Sulphide Distance from landfill (m)
0 50 100 150 200 250 300 0 50 100 150 200 250 300
m above sea level 40 m above sea level 40
38
38
36
36
34
34
32
32
30
28 30
28
> 20 5-20 1-5 < 1 mg l -1 > 0.5 0.1-0.5 < 0.1 mg l -1
26 26
Iron (II) Distance from landfill (m) Sulphate Distance from landfill (m)
0 50 100 150 200 250 300 0 50 100 150 200 250 300
m above sea level 40 m above sea level 40
38
38
36
36
34
34
32
32
30
28
28 30
26 26
150-250 10-100 < 1.5 mg l -1 > 100 10-20 <1 mg l -1
100-150 1.5-10 20-100 1-10
Manganese(II) Distance from landfill (m) Ammonium Distance from landfill (m)
0 50 100 150 200 250 300 0 50 100 150 200 250 300
m above sea level 40 m above sea level 40
38
38
36
36
34
34
32
32
30
30
28
28
26 26
> 25 5-10 < 0.2 mg l -1 > 75 10-50 < 1mg l -1
10-25 0.2-5 50-75 1-10
Nitrate Distance from landfill (m) Oxygen Distance from landfill (m)
0 50 100 150 200 250 300 0 50 100 150 200 250 300
m above sea level 40 m above sea level 40
38
38
36
36
34
34
32
32
30
28 30 6955 6955 6955
28
26 26
> 1 0.2-1 < 0.2 mg l -1 > 3 1-3 < 1 mg l -1
Figure 17.22 Chloride and dissolved redox-sensitive species in groundwater downgradient from the Grindsted
-1
-1
+
-
landfill site, Denmark. Non-volatile organic carbon (NVOC) is given in mg C l , NO 3 and NH 4 in mg N l , and
2-
-1
sulphide and SO 4 in mg S l . Adapted from Bjerg et al. (1995).
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