35 Ill. Adm. Code 203.1050
Allowable Emissions
Section 203.1050 Allowable Emissions
"Allowable emissions" means the emissions rate of
a stationary source calculated using the maximum rated capacity of the source
(unless the source is subject to federally enforceable limits which restrict
the operating rate, or hours of operation, or both) and the most stringent of
the following:
a) The
applicable standards set forth in 40 CFR Parts 60, 61, 62 and 63, incorporated
by reference in Section 203.1000;
b) The
applicable SIP emissions limitation, including those with a future compliance
date; or
c) The
emissions rate specified as a federally enforceable permit condition, including
those with a future compliance date.