Michigan Administrative Code
Department - Environmental Quality
Remediation and Redevelopment Division
Environmental Contamination Response Activity
CLEANUP CRITERIA REQUIREMENTS FOR RESPONSE ACTIVITY
Section R. 299.34 - Risk assessment and development of cleanup criteria for certain substances; special considerations
Current through Vol. 25-4, March 15, 2025
Rule 34.
(1) All polychlorinated and polybrominated dibenzodioxins and dibenzofurans shall be considered as 1 hazardous substance, expressed as an equivalent concentration of 2,3,7,8-tetrachlorodibenzo-p-dioxin, based upon the relative potency and concentration of the congeners present at the facility.
(2) If 2 or more hazardous substances are present and known to result in toxicological interaction, then the interactive effects shall be considered in establishing levels that are protective of the public health, safety, and welfare and the environment.
(3) The department may calculate generic cleanup criteria for certain hazardous substances using exposure assumptions other than those shown in the algorithms in these rules if either of the following conditions is satisfied: