Air Quality Rule and Plan Changes Open for Public Comment

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Changes are proposed for the following rules and plans. The official publication for announcing such changes is the Utah State Bulletin, published on the 1st and 15th of each month by the Division of Administrative Rules. The public is invited to comment on these via email to Dr. Robert (Bo) Wood ( (385) 499-3416 or by standard mail to:

Public Comment
Division of Air Quality
PO Box 144820
Salt Lake City, UT 84114-4820

Please include the rule name and number when submitting comments.

Rule and Plan Changes Open for Public Comment

Subject: Oil and Gas Industry

Status: Active

Public Hearing Status: Will be held if requested by 10 a.m. on May 23, 2022

Expected Adoption Date: July 7, 2022

Subject: Regional Haze Second Implementation Period SIP

The Regional Haze SIP was presented to the Air Quality Board on April 6, 2022, and a public comment period was approved. Prior to action by the Air Quality Board, the National Parks Service (NPS) and US Forest Service (USFS) reviewed the documents and provided comments. Their comments are summarized with DAQ responses in section 9.C.1 of the SIP (Section XX.A) and their full reviews are included in an Appendix file. The Air Quality Board welcomes comments on all aspects of the proposed SIP, but specifically requests public input on the following topics:

  • The need for a cost threshold.
  • Whether a mass-based limit or a rate-based limit would be more appropriate.
  • Whether the closure date for the Intermountain Generation Station should be from a range of January 1, 2026, to December 31, 2027.
  • Whether other controls explored in the draft SIP are both technically feasible and cost appropriate for US Magnesium at an appropriate date.
  • Whether dry sorbent injection is considered cost-effective at Sunnyside.

The public comment period will begin on May 1, 2022, and end on May 31, 2022. A public hearing will be held at 10:30 AM on Thursday, May 26, 2022. Interested parties may participate in person at the anchor location in the Four Corners room on the 4th floor of the Multi-Agency State Office Building (MASOB), located at 195 N. 1950 W. Salt Lake City, UT, or electronically via Google Meet.

Public Hearing Information: Thursday, May 26, 2022, 10:30 -11:30 am

Comments postmarked on or before May 31, 2022, will be accepted. Written comments may be submitted via email to or may be mailed to:

ATTN: Regional Haze
Bryce Bird, Director
Utah Division of Air Quality
P.O. Box 144820
Salt Lake City, UT 84114-4820


Expected Adoption Date: July 7, 2022