Section 742.222  Determination of Soil Vapor Saturation Limit

a)         For any volatile chemical, the soil gas remediation objective for the indoor and outdoor inhalation exposure routes developed under Tier 2 shall not exceed the soil vapor saturation limit, as determined under subsection (b).

b)         The soil vapor saturation limit shall be:

1)         The value listed in Appendix A, Table K for that specific contaminant;

2)         A value derived from Equation J&E5 in Appendix C, Table L; or

3)         A value derived from another method approved by the Agency.

(Source:  Added at 37 Ill. Reg. 7506, effective May 15, 2013)