1. (1) Any control apparatus installed on an installation shall be adequately and properly maintained.
2. (2) If the director determines that an exempted installation is not meeting an approval order or State Implementation Plan limitation, is creating an adverse impact to the environment, or would be injurious to human health or welfare, the director may require the owner or operator to submit a notice of intent and obtain an approval order in accordance with Sections R307-401-5 through R307-401-8. The director will complete an appropriate analysis and evaluation in consultation with the owner or operator before determining that an approval order is required.

3. (3) Low Oxides of Nitrogen Burner Technology.

   1. (a) Except as provided in Subsection R307-401-4(3)(b), when existing fuel combustion burners are replaced, the owner or operator shall install low oxides of nitrogen burners or equivalent oxides of nitrogen controls, as determined by the director, unless such equipment is not physically practical or cost effective. The owner or operator shall submit a demonstration that the equipment is not physically practical or cost effective to the director for review and approval before beginning construction.
   2. (b) Subsection (a) does not apply to non-commercial, residential buildings.
4. (4) A person may not operate a source of air pollution that is required to have a permit under Rule R307-401 unless the person has obtained a permit for the source under the procedures of Rule R307-401.

The general requirements in Subsections R307-401-4(1) through R307-401-4(4) apply to any new and modified installations, including installations that are exempt from the requirement to obtain an approval order.

KEY: air pollution, permits, approval orders, greenhouse gases

Date of Last Change: December 19, 2025

Notice of Continuation: May 4, 2022

Authorizing, and Implemented or Interpreted Law: 19-2-104(3)(b)(iii); 19-2-108