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环境科学学报 2009
Site-specific spatial distribution of VOC/SVOC and determination of the remediation boundary
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Abstract:
Types, extents and spatial distributions of contaminants in a typical abandoned industry site were analyzed based on full field investigation according to the site assessment procedure proposed by ASTM. The target level of remediation was determined based on the maximum acceptable environmental health risks. The boundary and total volume of contaminated soil in this site were defined. Results indicated that the contents of carbon tetrachloride, tetrachloroethylene, pentachloroethane, hexachlorobutadiene, hexachloroethane and hexachlorobenzene in the soil exceeded the national standard. According to the target value derived from the acceptable risk level of 1×10-4, 1×10-5, 1×10-6 and site characteristics, the total volume of contaminated soils with different risks was 20457, 25600 and 37300 m3 respectively. Treatment and remediation technologies were proposed in view of cost efficiency and future land development.
