Illinois Administrative Code
Title 35 - ENVIRONMENTAL PROTECTION
Part 742 - TIERED APPROACH TO CORRECTIVE ACTION OBJECTIVES
Subpart C - EXPOSURE ROUTE EVALUATIONS
Section 742.312 - Indoor Inhalation Exposure Route
Universal Citation: 35 IL Admin Code ยง 742.312
Current through Register Vol. 48, No. 38, September 20, 2024
The indoor inhalation exposure route may be excluded from consideration if:
a) None of the contaminants of concern are listed on Appendix A, Table J and none of the contaminants of concern are volatile chemicals, as defined in Section 742.200; or
b) The requirements in subsections (b)(1)(A), (B) or (C) and (b)(2) and (b)(3) are met:
1) Exclusion options when the contaminants of
concern are volatile chemicals:
A) No
building or man-made pathway exists or will be placed above contaminated soil
gas or groundwater exceeding Tier 1 remediation objectives for residential
property (Appendix B, Table H), provided, however, that there is also no soil
or groundwater contamination exceeding Tier 1 remediation objectives for
residential property (Appendix B, Table A) or Class I groundwater (Appendix B,
Table E) located 5 feet or less, horizontally, from any existing or potential
building or man-made pathway.
B) An
approved building control technology is in place or will be placed that meets
the requirements of Subpart L; or
C) If the contaminants of concern are
benzene, toluene, ethylbenzene, and total xylenes only, a demonstration of
active biodegradation has been made for benzene, toluene, ethylbenzene, and
total xylenes such that no indoor inhalation exposure will occur. This
demonstration shall be submitted to the Agency for review and
approval;
2) The
requirements of Sections
742.300
and
742.305
are met; and
3) An institutional
control, in accordance with Subpart J, will be placed on the
property.
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