Work Plan
Table 2.2 - Summary of Statistically Calculated Background Concentrations of Metals in Soil and Rock Samples
|
Metal Constituent (mg/kg) |
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|
Arsenic |
Barium |
Cadmium |
Chromium |
Copper |
Lead |
Mercury |
Nickel |
Zinc |
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|
Soil Type |
Bkg |
PQL |
SQL |
Bkg |
PQL |
SQL |
Bkg |
PQL |
SQL |
Bkg |
PQL |
SQL |
Bkg |
PQL |
SQL |
Bkg |
PQL |
SQL |
Bkg |
PQL |
SQL |
Bkg |
PQL |
SQL |
Bkg |
PQL |
SQL |
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|
Brackett soils |
37.7 |
0.5 |
0.25 |
243 |
2.0 |
1.0 |
2.6 |
4.0 |
2.0 |
73.1 |
7.0 |
3.5 |
34.6 |
6.0 |
3.0 |
196 |
0.5 |
0.25 |
0.12 |
0.1 |
0.05 |
66.6 |
15 |
7.5 |
92.1 |
2.0 |
1.0 |
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|
Brackett-Tarrant Assoc. |
2.6 |
0.5 |
0.25 |
84.3 |
2.0 |
1.0 |
2.0 |
4.0 |
2.0 |
15.0 |
7.0 |
3.5 |
12.1 |
6.0 |
3.0 |
128 |
0.5 |
0.25 |
0.05 |
0.1 |
0.05 |
47.1 |
15 |
7.5 |
46.9 |
2.0 |
1.0 |
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|
Crawford & Bexar stony soils |
40.3 |
0.5 |
0.25 |
170 |
2.0 |
1.0 |
3.0 |
4.0 |
2.0 |
43.4 |
7.0 |
3.5 |
30.7 |
6.0 |
3.0 |
133 |
0.5 |
0.25 |
0.05 |
0.1 |
0.05 |
57.6 |
15 |
7.5 |
121 |
2.0 |
1.0 |
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|
Krum complex |
31.8 |
0.5 |
0.25 |
279 |
2.0 |
1.0 |
2.6 |
4.0 |
2.0 |
50.7 |
7.0 |
3.5 |
28.2 |
6.0 |
3.0 |
82.4 |
0.5 |
0.25 |
0.05 |
0.1 |
0.05 |
46.5 |
15 |
7.5 |
120 |
2.0 |
1.0 |
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|
Lewisville silty clay |
20.9 |
0.5 |
0.25 |
255 |
2.0 |
1.0 |
2.4 |
0.1 |
0.05 |
41.5 |
7.0 |
3.5 |
25.6 |
6.0 |
3.0 |
124 |
0.5 |
0.25 |
0.05 |
0.1 |
0.05 |
29.1 |
15 |
7.5 |
69.8 |
2.0 |
1.0 |
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|
Tarrant Assoc. (undulating) |
25.6 |
0.5 |
0.25 |
303 |
2.0 |
1.0 |
2.6 |
0.1 |
0.05 |
69.2 |
7.0 |
3.5 |
28.9 |
6.0 |
3.0 |
105 |
0.5 |
0.25 |
0.05 |
0.1 |
0.05 |
44.9 |
15 |
7.5 |
67.1 |
2.0 |
1.0 |
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|
Tarrant Assoc. (rolling) |
13.4 |
0.5 |
0.25 |
281 |
2.0 |
1.0 |
3.4 |
0.1 |
0.05 |
74.4 |
7.0 |
3.5 |
31.6 |
6.0 |
3.0 |
91.4 |
0.5 |
0.25 |
0.77 |
0.1 |
0.05 |
47.6 |
15 |
7.5 |
107 |
2.0 |
1.0 |
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|
Trinity & Frio soils |
29.5 |
0.5 |
0.25 |
234 |
2.0 |
1.0 |
2.3 |
0.1 |
0.05 |
46.8 |
7.0 |
3.5 |
25.6 |
6.0 |
3.0 |
214 |
0.5 |
0.25 |
0.08 |
0.1 |
0.05 |
30.8 |
15 |
7.5 |
142 |
2.0 |
1.0 |
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|
Glen Rose limestone |
4.3 |
0.5 |
0.25 |
11.7 |
2.0 |
1.0 |
2.0 |
4.0 |
2.0 |
3.1 |
7.0 |
3.5 |
6.9 |
6.0 |
3.0 |
69.3 |
0.5 |
0.25 |
0.05 |
0.1 |
0.05 |
29.9 |
15 |
7.5 |
5.2 |
2.0 |
1.0 |
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|
mg/kg = milligrams per kilogram unk = unknown Bkg = Background PQL = Practical Quantitation Limit SQL = Sample Quantitation Limit (1/2 AFCEE PQL) Reference: Parsons ES, 1997b. This report can be found in Volume 2 of the encyclopedia. |
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