Table 11 Classification of risk assessment code (RAC) in the studied soil

< 1

No risk

–

1–10

Low risk

S₁, S₇, S₈, S₉, and S₃₁ in Cu%.

11–30

Medium risk

S₈ in Cr%.

S₁, S₇, and S₈ in Pb%.

S₁, S₇, S₈, and S₉ in Ni%.

S₂₅ in Cu%.

31–50

High risk

S₈ in Cd%.

S₇ in Cr%.

S₉, S₂₅, and S₃₁ in Pb%.

S₂₅ and S₃₁ in Ni%.

> 50

Very high risk

All selected samples except S₈ in Cd%.

All selected samples in As%.

All selected samples in Cr% except S₇ and S₈.