Minn. R. 4717.7890

Current through Register Vol. 48, No. 51, June 17, 2024

Part 4717.7890 - MULTIPLE CHEMICAL HEALTH RISK LIMITS: CANCER

Subpart 1.Scope.

To evaluate the risk of cancer from multiple chemicals detected in groundwater, a cancer health risk index must be calculated using the procedure specified in this part.

Subp. 2.Equation.

To evaluate the risk of cancer from multiple chemicals detected in groundwater, a cancer index must be calculated using the following equation:

Cancer health risk index=C₁/cHRL₁+C₂/cHRL₂+...+C_N/cHRL_N

Where:

A. C_N represents the concentration expressed as µg/L of the first through Nth chemical. In the case of a chemical that is detected but cannot be quantified, C_N is determined by acceptable statistical procedures.

B. cHRL_N represents the cancer health risk limit for the first through Nth chemical, as specified in part 4717.7860.

Minn. R. 4717.7890

33 SR 1792

Statutory Authority: MS s 103H.201