Table 6: Risk assessment for staple crops cultivated on rehabilitated mined sites.
| Location | Crop | Single Contamination Index | Comprehensive Contamination Index (ɪCom) | Risk Level | ||||
| ɪCd | ɪAs | ɪCr | ɪCr | ɪPb | ||||
| Rehabilitated Pit (Ad) | Corn | 0.10 | 0.2 | 0.60 | 0.003 | 0.03 | 0.44 | None |
| Rehabilitated Pit (T1) | Corn | 0.10 | 0.2 | 0.47 | 0.010 | 0.02 | 0.35 | None |
| Rehabilitated Pit (Ad) | Cassava | 0.02 | 0.1 | 1.20 | 0.000 | 0.12 | 0.88 | None |
| Rehabilitated Pit (T1) | Cassava | 0.06 | 0.1 | 0.92 | 0.003 | 0.35 | 0.68 | None |
| Rehabilitated Dump (Nhy) | Cassava | 0.10 | 0.1 | 1.12 | 0.003 | 0.36 | 0.83 | None |
| Rehabilitated Dump (San) | Cassava | 0.10 | 0.4 | 1.54 | 0.010 | 0.19 | 1.13 | Light |
| Rehabilitated Dump (San) | Plantain | 0.20 | - | - | - | 0.60 | 0.43 | None |
| Rehabilitated Dump (Nhy) | Plantain | 0.20 | - | - | - | 0.10 | 0.14 | None |
All treatment sites (reclaimed) are backfilled Pits or waste dumps with waste material dumped adjacent to the pit used for backfilling.