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What criteria are the indoor air and sub-slab soil gas sampling results being compared to?

April 26, 2017air criteria Gas indoor results Sampling soil sub-slab

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What criteria are the indoor air and sub-slab soil gas sampling results being compared to?

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Site-specific Indoor Air Comparison Levels and Sub-Slab Soil Gas Comparison Levels were developed using a new low-level method of analysis at the DuPont Pompton Lakes Works site. Comparison levels for the 10 contaminants of concern are available below. Chemical Site-Specific Indoor Air Comparison Levels (ug/m3) Carbon tetrachloride 1 1,1-Dichloroethane 510 1,2-Dichloroethane 0.8 1,1-Dichloroethene 220 1,2-Dichloroethene (cis) 36 1,2-Dichloroethene (trans) 73 Tetrachloroethene (PCE) 1 1,1,1-Trichloroethane 1,000 Trichloroethene (TCE) 1 Vinyl chloride 0.