The time required to arrive at this result varies from two to four weeks for gasoline contamination, and from three to six months for heating oil contamination. If the texture of the contaminated soil is fine, treatment time may be two or three times longer than for sandy soil. The gaseous and liquid effluents are treated on-site.
Environmental monitoring includes measures of ambient air and groundwater quality.
For the treatment of gaseous effluents, rigorous control over the filters makes stable results possible. The technology cannot be used to eliminate inorganic contaminants such as metals. Qu bec before starting operations. Piles of soil deposited on the platform usually have a volume varying from 100 to 1,500 m 3 . Basic protective equipment is necessary at all times, with the occasional addition of masks to protect against dust and VOCs.