Rule 9. A general ventilation system may be used for contaminant control. The ventilation air volume shall be sufficient to dilute the airborne contaminant to levels not exceeding the permissible exposure limits.
Mich. Admin. Code R. 325.52009
Rule 9. A general ventilation system may be used for contaminant control. The ventilation air volume shall be sufficient to dilute the airborne contaminant to levels not exceeding the permissible exposure limits.
Mich. Admin. Code R. 325.52009