Contamination Factor (CF) Contamination Degree (CDeg)
Class Indication Class Indication
CF<1 Low Contamination Cdeg<8 Low degree of contamination
1< CF<3 Moderately contaminated 8≤ Cdeg<16 Moderate degree of contamination
3 <CF<6 Considerable contamination 16≤ Cdeg<32 Considerable degree of contamination
6<CF Very high contamination 32≤ Cdeg Very High degree of contamination
Table 8: CF and CDeg Classification Hakanson 1980.