Requirements for the storage and handling of liquefied petroleum gases as contained in the 2011 Edition of NFPA 58 (Liquefied Petroleum Gas Code) are mandatory with the following additional requirements: The pressure relief valve discharge on each aboveground container of more than 2000 gal. water capacity shall be piped vertically upward to a point at least 7 ft. above the top of the container, and the discharge opening shall be unobstructed to the open air.
Ill. Admin. Code tit. 41, § 200.10
Amended at 36 Ill. Reg. 8735, effective August 1, 2012