"Gross heating value" means amount of heat produced when a unit quantity of fuel is burned to carbon dioxide and water vapor, and the water vapor condensed as described in ASTM D2015-66, D900-55, D1826-64 and D240-64 incorporated by reference in Section 211.101 of this Part.
Ill. Admin. Code tit. 35, § 211.2770
Added at 17 Ill. Reg. 16504, effective September 27, 1993