Metal | Pond 1 | Pond 2 | Pond 3 | Pond 4 | Pond 5 | Pond 6 | Pond 7 | Pond 8 | Pond 9 | Pond 10 | NESREA limit |
---|---|---|---|---|---|---|---|---|---|---|---|
Cu | 0.01 ± 0.00 | 0.01 ± 0.02 | 0.01 ± 0.00 | 0.01 ± 0.00 | 0.04 ± 0.01 | 0.01 ± 0.00 | 0.01 ± 0.00 | 0.09 ± 0.01 | 0.06 ± 0.01 | 0.01 ± 0.00 | 0.001 |
Zn | 0.19 ± 0.04 | 0.22 ± 0.02 | 0.48 ± 0.04 | 0.15 ± 0.01 | 4.58 ± 0.03 | 0.89 ± 0.06 | 2.31 ± 0.05 | 1.96 ± 0.01 | 1.07 ± 0.03 | 2.82 ± 0.04 | 0.01 |
Pb | 0.01 ± 0.00 | 0.01 ± 0.00 | 0.01 ± 0.00 | 0.02 ± 0.00 | 0.07 ± 0.01 | 0.19 ± 0.02 | 0.26 ± 0.02 | 0.19 ± 0.00 | 0.29 ± 0.02 | 0.29 ± 0.02 | 0.01 |
Ni | ND | ND | ND | ND | 0.47 ± 0.03 | 0.80 ± 0.01 | 0.22 ± 0.00 | 0.28 ± 0.03 | 0.17 ± 0.02 | 0.39 ± 0.01 | 0.01 |
Cr | 0.35 ± 0.00 | 0.87 ± 0.03 | 1.36 ± 0.11 | 1.14 ± 0.04 | 1.43 ± 0.02 | 1.14 ± 0.05 | 2.11 ± 0.13 | 2.63 ± 0.03 | 2.57 ± 0.00 | 1.79 ± 0.03 | 0.001 (Cr6+) |