1. (1) Section R307-150-4 applies to stationary sources with actual emissions of 100 tons or more per year of sulfur dioxide in calendar year 2000 or any subsequent year unless exempted in Subsection R307-150-3(1)(b).

   1. (a) Stationary sources subject to Subsection R307-150-3(1) that emit less than 100 tons per year of sulfur dioxide in any subsequent year shall remain subject to Section R307-150-4.
   2. (b) Stationary sources that meet the requirements of Subsection R307-150-3(1) that have permanently ceased operation are exempt from the requirements of Section R307-150-4 for the years during which the source did not operate at any time during the year, except for the Carbon Power Plant, which, beginning with 2016 emissions, the Division of Air Quality shall include emissions of 8,005 tons per year of sulfur dioxide in the annual regional sulfur dioxide milestone report required as part of the Regional Haze State Implementation Plan.
   3. (c) Sources subject to Section R307-150-4 may be subject to other sections of Rule R307-150.
2. (2) Section R307-150-5 applies to large major sources.

3. (3) Section R307-150-6 applies to each:

   1. (a) major source that is not a large major source;
   2. (b) source with the potential to emit five tons or more per year of lead;
   3. (c) source not included in Subsection R307-150-3(2), R307-150-3(3)(a), or R307-150-3(3)(b) that is located in Davis, Salt Lake, Utah, or Weber Counties and that has the potential to emit 25 tons or more per year of any combination of oxides of nitrogen, oxides of sulfur and PM10, or the potential to emit ten tons or more per year of volatile organic compounds; and
   4. (d) Part 70 source not included in Subsection R307-150-3(2), R307-150-3(3)(a), R307-150-3(3)(b), or R307-150-3(3)(c).
4. (4) Section R307-150-7 applies to sources with Standard Industrial Classification codes in the major group 13 that have uncontrolled actual emissions greater than one ton per year for a single pollutant of PM10, PM2.5, oxides of nitrogen, oxides of sulfur, carbon monoxide, or volatile organic compounds. These sources include, industries involved in oil and natural gas exploration, production, and transmission operations, well production facilities, natural gas compressor stations, natural gas processing plants, and commercial oil and gas disposal wells, and ponds. Sources that require inventory submittals under Subsections R307-150-3(1) through (3) are excluded from the requirements of Section R307-150-7.
5. (5) Section R307-150-8 applies to stationary sources located in a designated ozone nonattainment area that have the potential to emit oxides of nitrogen or volatile organic compounds greater than 25 tons per year.

KEY: air pollution, reports, inventories

Date of Last Change: August 1, 2025

Notice of Continuation: November 1, 2023

Authorizing, and Implemented or Interpreted Law: 19-2-104(1)(c)