Section 325.51153. Airborne concentrations; permissible employee exposure limits.  


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  • Rule 3. (1) An employer shall ensure that an employee is not exposed to an airborne concentration of EtO of more than 1 part EtO per million parts of air (1 ppm) as an 8- hour, time-weighted average (TWA).

    (2) An employer shall ensure that an employee is not exposed to an airborne short-term exposure limit (STEL) concentration of EtO of more than 5 ppm as averaged over any 15-minute period during the working day.

History: 1988 AACS; 1993 AACS.