Table 5.75
List of groundwater testing and evaluation results of M4 long-term monitoring well
Testing date
2012.3.2
2012.4.1
2012.7.9
2012.10.11
Annual average
Items
Test value
Test value
Test value
Test value
Average test value
Category
Evaluation score
pH (dimensionless)
6.26
6.06
6.11
6.58
6.25
IV
6
Total hardness (as CaCO
3 ) (mg/L)
64.2
68.2
66.4
64.8
65.9
I
0
Total dissolved solids (mg/L)
162
212
362
181
229
I
0
Chloride (mg/L)
6.64
6.44
20.3
79.1
28.12
I
0
Volatile phenols (as phenol) (mg/L)
0.0018
0.0011
0.0021
0.0016
0.0017
III
3
Permanganate index (mg/L)
2.7
2.4
2.2
2.4
2.4
III
3
Nitrate (as N) (mg/L)
7.05
8.18
7.12
11.8
8.54
III
3
Ammonia-nitrogen (NH
4
+
) (mg/L)
0.06
0.638
0.252
0.252
0.301
IV
6
Cyanide (mg/L)
<0.004
<0.004
<0.004
<0.004
<0.004
I
0
Mercury (Hg) (mg/L)
0.00004
0.00005
0.00005
0.00003
0.00004
I
0
Arsenic (As) (mg/L)
<0.0001
<0.0001
<0.0001
<0.0001
<0.0002
I
0
Chromium (hexavalent Cr
6+
) (mg/L)
<0.004
<0.004
<0.004
<0.004
<0.004
I
0
Lead (Pb) (mg/L)
<0.001
0.0035
0.02
<0.01
<0.01
I
0
Total coliforms (coliforms/L)
5.4
 10
3
<20
<20
<20
<20
1.62
Comprehensive evaluation score A
4.39
Groundwater quality level
Poor
Data source
(Monitoring document No.)
Rong Huan Jian (2012) WJ230—1
242
5 Application Cases