Modified contamination degree mCd | Modified degree of contamination |
mCd < 1.5 1.5 ≤ mCd < 2 2 ≤ mCd < 4 4 ≤ mC < 8 8 ≤ mCd < 16 16 ≤ mCd < 32 mCd ≥ 32 | Nil to very low degree of contamination Low degree of contamination Moderate degree of contamination High degree of contamination Very high degree of contamination Extremely high degree of contamination Ultra high degree of contamination |