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.

Source Note: The provisions of this §117.1103 adopted to be effective May 16, 2024, 49 TexReg 3347