You must make sure exhaust systems are constructed, installed, inspected, and maintained to meet both of the following:
Reference: Refer to the American National Standards Institute, ANSI Z9.4-1997 for information on Exhaust Systems for Abrasive-blasting Operations, Ventilation, and Safe Practices for Fixed Location Enclosures.
Wash. Admin. Code § 296-818-40005
Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, 49.17.060. 06-12-074, § 296-818-40005, filed 6/6/06, effective 9/1/06.