40 CFR §63.9990

1. (a)Coal-fired EGUs are subcategorized as defined in paragraphs (a)(1) through (3) of this section and as defined in § 63.10042.
   1. (1)EGUs designed for coal with a heating value greater than or equal to 8,300 Btu/lb,
   2. (2)EGUs designed for low rank virgin coal, and
   3. (3)EGUs designed for EBCR.
2. (b)Oil-fired EGUs are subcategorized as noted in paragraphs (b)(1) through (b)(4) of this section and as defined in § 63.10042.
   1. (1)Continental liquid oil-fired EGUs
   2. (2)Non-continental liquid oil-fired EGUs,
   3. (3)Limited-use liquid oil-fired EGUs, and
   4. (4)EGUs designed to burn solid oil-derived fuel.
3. (c)IGCC units combusting either gasified coal or gasified solid oil-derived fuel. For purposes of compliance, monitoring, recordkeeping, and reporting requirements in this subpart, IGCC units are subject in the same manner as coal-fired units and solid oil-derived fuel-fired units, unless otherwise indicated.