Igeoclass | Igeovalue | Contamination level |
---|---|---|
0 | I geo ≤ 0 | Uncontaminated |
1 | 0 < I geo ≤ 1 | Uncontaminated/moderately contaminated |
2 | 1 < I geo ≤ 2 | Moderately contaminated |
3 | 2 < I geo ≤ 3 | Moderately/strongly contaminated |
4 | 3 < I geo ≤ 4 | Strongly contaminated |
5 | 4 < I geo ≤ 5 | Strongly/extremely contaminated |
6 | Igeo > 5 | Extremely contaminated |