Illinois Administrative Code
Title 35 - ENVIRONMENTAL PROTECTION
Part 352 - PROCEDURES FOR DETERMINING WATER QUALITY BASED PERMIT LIMITATIONS FOR NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM DISCHARGERS TO THE LAKE MICHIGAN BASIN
Subpart C - ASSESSING HUMAN HEALTH IMPACTS OF MULTIPLE TOXIC SUBSTANCES INCLUDING ADDITIVITY PROCEDURES FOR CHLORINATED DIBENZO-P-DIOXINS AND CHLORINATED DIBENZOFURANS
Section 352.300 - Additivity for Combinations of Substances

Universal Citation: 35 IL Admin Code § 352.300

Current through Register Vol. 48, No. 38, September 20, 2024

35 Ill. Adm. Code 302.590 establishes an acceptable additive risk level of one in 100,000 (10(-5)) for establishing Tier I criteria and Tier II values for combinations of substances exhibiting a carcinogenic or other nonthreshold toxic mechanism. For those discharges containing multiple nonthreshold substances, application of this additive standard shall be consistent with Sections 352.302 and 352.303.

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