Table 3.
Heavy metals | Siding | Loading | Platform | Cleaning | Control | ||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Soil | Soil | Soil | Soil | Soil | Soil | Soil | Soil | Soil | Soil | Soil | |
A | B | A | B | A | B | A | B | 1 | 2 | 3 | |
Lead | 448 | 494 | 75 | 84 | 193 | 177 | 134 | 204 | 8 | 11 | 6 |
Cadmium | 5.4 | 5.1 | 7.4 | 0.8 | 2.5 | 1.3 | 1.3 | 1.9 | n.d. | n.d. | n.d. |
Copper | 191 | 161 | 33 | 37 | 480 | 326 | 105 | 418 | 4 | 4 | 4 |
Zinc | 1,264 | 1,223 | 206 | 228 | 1,438 | 897 | 357 | 563 | 23 | 23 | 18 |
Mercury | 0.573 | 0.969 | 0.066 | 0.046 | 0.165 | 0.144 | 0.678 | 0.757 | 0.014 | 0.050 | 0.013 |
Iron | 44,800 | 39,700 | 14,600 | 11,900 | 112,900 | 59,700 | 24,900 | 34,300 | 4,400 | 4,500 | 5,000 |
Cobalt | 9 | 8 | 3 | 3 | 14 | 6 | 5 | 6 | 1 | 1 | 2 |
Chromium | 67 | 58 | 14 | 11 | 208 | 62 | 23 | 33 | 5 | 6 | 8 |
Molybdenum | 2 | 2 | n.d. | n.d. | 8 | 4 | 1 | 1 | n.d. | n.d. | 1 |