WAC 51-13-300   Chapter 3 -- Ventilation systems.  



[Statutory Authority: RCW 19.27.190(2) and 1992 c 132. 93-02-056, § 51-13-300, filed 1/6/93, effective 7/1/93. Statutory Authority: RCW 19.27.190. 91-01-102, § 51-13-300, filed 12/18/90, effective 7/1/91.]