Special precautions include avoidance of formaldehyde, benzene, chloroform, trichlorethylene
(a laundering agent), chemotherapeutic agents, and viral infections.
It's a way of removing most of the contaminants in the deeper subsurface of a site: oils, fuels, or trichlorethylene
, along with other cleaning solvents.
The agents detected in both water and sediment included petrol effluents, including many poly-cyclic aromatic hydrocarbons (PAHs), benzene, toluene, and xylene, long-chain and branched hydrocarbons, phenols, alcohols, chlorinated alkylbenzenes, trichlorethylene
, trichlorophenol, cresols, cycloalkanes, aldehydes, ketones, many brominated and chlorinated aromatic organic compounds, di-(2-ethyihexyl)phthalate, diphenyl, hexachlorocyclohexanes, methylene chloride, styrenes, organic and inorganic acids, fertilizers and their by-products, nitrogen by-products, vinyl chlorides, salts, dust, and cement in powder form, as well as radionuclides of uranium, radium, and radon.