The following units are exempt from this division, except as
specified in §117.1140 and 117.1145 of this title (relating to
Demonstration of Compliance; and Notification, Recordkeeping, and
Reporting Requirements):
(1) utility boilers or auxiliary steam boilers with
an annual heat input less than or equal to 220,000 million British
thermal units per year, on a rolling 12-month basis;
(2) stationary gas turbines that operate less than
850 hours per year, on a rolling 12-month basis; or
(3) stationary gas turbines that are used solely to
power other gas turbines or engines during startups.
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