Ill. Admin. Code tit. 35, § 271.110
a) If the rated heat input for all coal-fired fuel combustion emission sources located at a facility exceeds 500 million British thermal units (Btu)/hour, then:
b) In addition to the information described in Subsection (a) of this Section, if the rated heat input for all coal-fired fuel combustion sources located at a facility exceeds 1,000 million Btu/hour, then:
1) The applicant shall submit results of the analyses of daily coal samples for ash, sulfur, Btu and moisture content for the most recent two-month period for which results are available prior to the permit application. Samples may be taken from coal as located to the bunkers, or as fired in the boilers, or as otherwise approved by the Agency. Sampling and analysis for ash, sulfur, Btu and moisture content shall be in accordance with standards approved by the American Society for Testing and Materials (A.S.T.M.), 1916 Race Street, Philadelphia, PA 19103. The standards designated as follows in the 1983 Annual Book of ASTM Standards, are hereby incorporated by reference:
D 2015-77 (1978)
D 3174-82
D 3177-82
D 3286-82
D 3302-82
This incorporation by reference contains no later amendments to the standards designated above.