Geology Reference
In-Depth Information
TABLE 15.3 Mean Concentrations of Lead, Zinc, Copper, and Manganese in Water in the New Lead Belt
Mean Concentrations
Site
Site
Flow (cfs)
Pb (ppm)
Zn (ppm)
Cu (ppm)
Mn (ppm)
1
11.22
.021
.034
.010
.077
2
11.22
.011
.017
.010
.049
3
-
.010
.011
.011
.012
4
5.80
.014
.069
.010
.035
5
8.70
.090
.034
.011
.127
6
4.10
.011
.010
.010
.011
7
382.6
.014
.011
.010
.021
8
33.8
.044
.011
.010
.013
9
33.8
.011
.010
.013
.010
10
9.22
.011
.010
.010
.013
—
11
.035
.140
.017
1.637
—
12
.033
.134
1.691
.012
13
9.22
.030
.038
.010
.488
14
6.75
.012
.010
.010
.025
15
6.75
.019
.020
.018
.156
TABLE 15.4 Mean Concentrations of Lead, Zinc, Copper, and Manganese in Aquatic Organisms of Strother Creek
Mean Concentrations (mg/g)
Organism
Miles Below Pond
Pb
Zn
Cu
Mn
Snails
0.2
16
54
57
1,770
1.3
75
27
21
710
2.8
44
59
18
16
Crayfish
0.2
69
97
142
195
1.3
24
92
130
750
2.8
86
410
38
86
4.2
28
94
97
485
Tadpoles
0.2
36
210
26
5,650
1.3
44
4,560
780
265
2.8
310
210
26
690
4.2
1,590
160
17
500
b.
Similar but less obvious trends exist for Pb, Zn, and Cu;
b.
How many times greater is the concentration of lead at
however, Pb in tadpoles exhibits the opposite trend. What
the mine than 6.5 miles downstream from the mine?
might account for this different trend?
c.
How many times greater is the value for lead at 6.5
miles downstream than the apparent background level?
7.
Examine Figure 15.8.
a.
What is the background concentration for lead in
aquatic vegetation in the Bee Fork drainage basin?
