Igeo		$E_{r}^{i}$			RI
Igeo Classes	soil quality	$E_{r}^{i}$ level	value of $E_{r}^{i}$	risk	value of RI	Risk
Igeo ≤ 0	No Pollution	0	$E_{r}^{i}$ < 40	Low	RI < 110	Low
Igeo = 0 - 1	No to moderate pollution	1	$E_{r}^{i}$ = 40 - 80	Moderate	RI = 110 - 200	Moderate
Igeo = 1 - 2	Moderate pollution	2	$E_{r}^{i}$ = 80 - 160	Considerable	RI = 200 - 400	Considerable
Igeo = 2 - 3	Moderate to heavy pollution	3	$E_{r}^{i}$ = 160 - 320	High	RI ≥ 400	Very high
Igeo = 3 - 4	Heavy pollution	4	$E_{r}^{i}$ ≥ 320	Very high
Igeo = 4 - 5	Heavy to extreme pollution
Igeo ≥ 5	Extreme pollution