BTEX - Benzene/Toluene/Ethyl benzene/Xylene.
CL - Commercial class contamination. The soil is above residential but below commercial levels.
HEPH - Heavy Extractable Petroleum Hydrocarbons.
LEPH - Light Extractable Petroleum Hydrocarbons.
PAHs - Polycyclic Aromatic Hydrocarbons.
PCBs - Polychlorinated Biphenyls.
RL - Residential class contamination. The soil is below residential levels of acceptability.
SW - Special waste class contamination. The soil is above special waste levels, either TDG or 41.1.
VPH - Volatile Petroleum Hydrocarbons
W - Waste class contamination. The soil is above commercial levels of acceptability but below special waste levels.