Minn. R. agency 144, ch. 4717, HEALTH RISK LIMITS, pt. 4717.7890

Current through Register Vol. 49, No. 20, November 12, 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. agency 144, ch. 4717, HEALTH RISK LIMITS, pt. 4717.7890

33 SR 1792

Statutory Authority: MS s 103H.201