Table 1.
Some specific criteria for rapid risk assessment of landfills [16].
| SI. no. | Attribute (site-specific criteria) | Attribute weightage | Sensitivity index | |||
|---|---|---|---|---|---|---|
| 0.0–0.25 | 0.25–0.5 | 0.5–0.75 | 0.75–1.0 | |||
| 1. | Distance from nearest water supply source (m) | 69 | >5000 | 2500–5000 | 1000–2500 | <1000 |
| 2. | Depth of filling of waste (m) | 64 | <3 | 3–10 | 10–20 | >20 |
| 3. | Area of dumpsite (ha) | 61 | <5 | 5–10 | 10–20 | >20 |
| 4. | Groundwater depth (m) | 54 | >20 | 10–20 | 3–10 | <3 |
| 5. | Permeability of soil (1 × 10−6 cm/s) | 54 | <0.1 | 1–0.1 | 1–10 | >10 |
| 6. | Groundwater quality | 50 | Not a concern | Potable | Potable if no alternative | Nonpotable |
| 7. | Distance to critical habitats such as wetlands and reserved forest (km) | 46 | >25 | 10–25 | 5–10 | <5 |
| 8. | Distance to the nearest airport (km) | 46 | >20 | 10–20 | 5–10 | <5 |
| 9. | Distance from surface water body (m) | 41 | >8000 | 1500–8000 | 500–1500 | <500 |
| 10. | Type of underlying soil (% clay) | 41 | >50 | 30–50 | 15–30 | 0–15 |