Conversion vendor units or medical units requiring fuel gas for any purpose must be equipped with a gas piping system that is designed for LPG only or combination LPG and natural gas.
Wash. Admin. Code § 296-150V-1360
Statutory Authority: Chapter 43.22 RCW. 99-18-069, § 296-150V-1360, filed 8/31/99, effective 10/1/99.