Contamination of soil can occur through various ways including industrial activity, agricultural chemicals or incorrect disposal of waste.
Soil Vapour Extraction (SVE) is a process by which contaminant vapours are removed from soil through boreholes or trenches. The extracted air can then either be treated or destroyed. SVE typically extracts the vapours from soil above the water table whereas Air sparging can extract vapours from groundwater and wet soil beneath the water table by pumping air underground.
A wide range of contaminants can be extracted through SVE including:
Petroleum range hydrocarbons (PRO)
Diesel range hydrocarbons (DRO)
BTEX (Benzene, Toluene, Ethylbenzene and Xylene)
Some pesticides and herbicides.
Sampling for these compounds can be undertaken using a variety of techniques including absorbent tubes and Tedlar bags
Here at MSS we can offer analysis of all the above compounds for SVE plus many others using gas chromatography-mass spectrometry.