1. a) The following materials are incorporated by reference in this Part:

   1. 1) The American Petroleum Institute (API), 1220 L Street, NW, Washington, DC 20005-4070.

      API 2510	Design and Construction of LPG
      	Installations (2001)

2. 2) The National Fire Protection Association (NFPA); 1 Batterymarch Park, Quincy MA 02169-7471.

   1. b) No incorporation by reference in this Part includes any later amendment or edition beyond the date stated in the text of this Part.

   A)	NFPA 54	National Fuel Gas Code (2009)
   B)	NFPA 58	Liquefied Petroleum Gas Code (2011)
   C)	NFPA 59	Utility LP-Gas Plant Code (2008)
   D)	NFPA 1192	Standard on Recreational Vehicles (2011)

(Source: Amended at 36 Ill. Reg. 8735, effective August 1, 2012)