EQUATION FOR CALCULATION OF HRVs FOR CARCINOGENS

Subpart 1. Scope. This part establishes the method for determining the health risk values (HRVs) for a carcinogen. Subp. 2. Equation for carcinogens. The equation for determining the HRV for a carcinogen is: Additional lifetime risk HRV = _ Unit risk Where: A. HRV is expressed in units of micrograms per cubic meter (µg/m 3 ) of air; B. unit risk is expressed in units of micrograms of the chemical or defined mixture of chemicals per cubic meter of air; and C. additional lifetime risk is unitless.