1. (1) The purpose of Rule R307-150 is to establish:

   1. (a) by rule, the time frame, pollutants, and information that sources shall include in inventory submittals; and
   2. (b) consistent reporting requirements for stationary sources in Utah to determine whether sulfur dioxide emissions remain below the sulfur dioxide milestones established in the State Implementation Plan for Regional Haze, Section XX.E.1.a, incorporated by reference, in Section R307-110-28.
2. (2) The requirements of Rule R307-150 replace any annual inventory reporting requirements in approval orders or operating permits issued before December 4, 2003.
3. (3) Emission inventories shall be submitted on or before April 15 of each year following the calendar year for which an inventory is required. The inventory shall be submitted in a format specified by the Division of Air Quality following consultation with each source.
4. (4) The Director may require at any time a full or partial-year inventory upon reasonable notice to affected sources when it is determined that the inventory is necessary to develop a state implementation plan, to assess whether there is a threat to public health or safety or the environment, or to determine whether the source is in compliance with Title R307.

5. (5) Recordkeeping requirements include the following:

   1. (a) each owner or operator of a stationary source subject to this rule shall maintain a copy of the emission inventory submitted to the Division of Air Quality and records indicating how the information submitted in the inventory was determined, including any calculations, data, measurements, and estimates used;

      1. (i) the records under Section R307-150-4 shall be kept for ten years;
      2. (ii) other records shall be kept for a period of at least five years from the due date of each inventory;
   2. (b) the owner or operator of the stationary source shall make these records available for inspection by any representative of the Division of Air Quality during normal business hours.

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)