| Locations | Depths | Ecological Risk Factor | RI | Ecological Risk | ||
| As | Cd | Zn | ||||
| NFB | 0 - 20 | 10.0 | 400 | 0.45 | 417 | Considerable |
|
| 20 - 40 | 7.95 | 340 | 0.39 | 353 | Considerable |
|
| 40 - 80 | 3.48 | 128 | 0.31 | 135 | Low |
| NSM | 0 - 20 | 7.60 | 262 | 0.23 | 275 | Moderate |
|
| 20 - 40 | 3.38 | 118 | 0.18 | 125 | Low |
|
| 40 - 80 | 1.68 | 53.6 | 0.11 | 57.1 | Low |
| NPS | 0 - 20 | 4.04 | 3.00 | 0.15 | 9.97 | Low |
|
| 20 - 40 | 3.01 | 28.8 | 0.12 | 34.5 | Low |
|
| 40 - 80 | 1.42 | 9.7 | 0.08 | 22.1 | Low |
| SFB | 0 - 20 | 1.55 | 78.6 | 0.17 | 82.7 | Low |
|
| 20 - 40 | 1.07 | 62.1 | 0.10 | 64.7 | Low |
|
| 40 - 80 | 1.03 | 36.3 | 0.06 | 38.1 | Low |