Class

Igeo values

Sediment quality

0

1

3

4

5

6

Igeo ≤ 0

0 < Igeo < 1

2 < Igeo < 3

3 < Igeo < 4

4 < Igeo < 5

Igeo > 5

Uncontaminated

Uncontaminated to moderately Contaminated

Moderately to heavily Contaminated

Heavily contaminated

Heavily to extreme contaminated

Extremely contaminated