Environmental Quality

Air Quality

Rule 110: General Requirements: State Implementation Plan

Effective Date:

Admin. Code Reference: R307-110

Rule Type: Proposed Rule

NOTICE OF SUBSTANTIVE CHANGE

TYPE OF FILING: Amendment

Filing ID: 58135

Rule or section number:

R307-110-13

1. Agency Information

Title catchline:

Environmental Quality, Air Quality

Building:

Multi-Agency State Office Building

Street address:

195 N 1950 W

City, state:

Salt Lake City, UT

Mailing address:

PO Box 144820

City, state and zip:

Salt Lake City, UT 84114-4820

2. Contact Persons

Name:

Phone:

Email:

Ryan Bares

801-536-4216

rbares@utah.gov

Jazmine Lopez

801-536-4050

jazminelopez@utah.gov

Please address questions regarding information on this notice to the persons listed above.

3. General Information

A. Rule or section catchline:

R307-110-13. Section IX, Control Measures for Area and Point Sources, Part D, Ozone

B. Purpose of the new rule or reason for the change:

The State of Utah is required to submit periodic emission inventories for ozone nonattainment areas to the Environmental Protection Agency as part of Clean Air Act (CAA) requirements, Section 182(a)(3)(A).

The first periodic emission inventory for the Southern Wasatch Front (SWF) nonattainment area (NAA) was completed and submitted for the year 2017.

This amendment incorporates the periodic inventories for the years 2020 and 2023 into Utah's State Implementation Plan (SIP) and as such the Air Quality Board (Board) is proposing to amend Section R307-110-13 Section IX, Control Measures for Area and Point Sources, Part D, Ozone to change the Board adoption date to the anticipated date of the amended plan.

C. Summary of the new rule or change:

This proposed rule amendment incorporates the required periodic emission inventory reports for the years 2020 and 2023 for the SWF NAA into the Utah SIP as required by the CAA.

Pursuant to Section 182(a)(3) of the CAA, the inventories include a comprehensive accounting of actual VOC and NOx emissions from the following source categories: point, area, on-road mobile, and non-road mobile sources.

Emissions from oil and gas sources are not included in this inventory due to the lack of oil and gas sources within the SWF NAA.

In addition to the exclusion of oil and gas emissions, this inventory submission does not include emissions from wildfire or biogenic sources as the inventory is limited to locally produced anthropogenic emissions only.

In Section R307-110-13, Section IX, Control Measures for Area and Point Sources, Part D, Ozone is being amended to change the Board adoption date to the anticipated date of the amended plan.

5. Fiscal Information

Provide an estimate and written explanation of the aggregate anticipated cost or savings to:

A. State budget:

This amendment does not have any impact on the state budget as the change reflects work already completed by the Division of Air Quality as part of staff's required workload.

This amendment does not alter current regulations or practices.

B. Local governments:

This amendment does not have any impact on local governments as this rule requires no action by local governments.

This amendment does not alter current regulations or practices.

C. Small businesses ("small business" means a business employing 1-49 persons):

This amendment does not have any impact on small businesses as this rule requires no action by small businesses.

This amendment does not alter current regulations or practices.

D. Non-small businesses ("non-small business" means a business employing 50 or more persons):

This amendment does not have any impact on non-small businesses as this rule requires no action by non-small businesses.

This amendment does not alter current regulations or practices.

E. Persons other than small businesses, non-small businesses, state, or local government entities ("person" means any individual, partnership, corporation, association, governmental entity, or public or private organization of any character other than an agency):

This amendment does not impact persons other than small businesses, non-small businesses, state, or local government entities as this rule requires no action by persons other than small businesses, non-small businesses, state, or local government entities.

This amendment does not alter current regulations or practices.

F. Compliance costs for affected persons:

There are no compliance costs associated with this amendment as the change is editorial to incorporate already prepared reports into the SIP.

This amendment does not alter current regulations or practices.

6. Regulatory Impact Summary Table

Enter the cost or savings in the relevant cell. If there is no cost or savings, enter, "$0." If a cost or savings is inestimable, enter, "inestimable."

Fiscal Cost

FY2027

FY2028

FY2029

FY2030

FY2031

State Budget

Local Governments

Small Businesses

Non-Small Businesses

Other Persons

Total Fiscal Cost

Fiscal Benefits

FY2027

FY2028

FY2029

FY2030

FY2031

State Budget

Local Governments

Small Businesses

Non-Small Businesses

Other Persons

Total Fiscal Benefits

Net Fiscal Benefits

7. Regulatory Impact Analysis Approval

The Commissioner of the Department of Environmental Quality, Tim Davis, has reviewed and approved this regulatory impact analysis.

8. Family Impact Information

A. The agency has considered this rule's impact on family health, stability, and formation:

☒

9. Citation Information

Provide citations to the statutory authority for the rule. If there is also a federal requirement for the rule, provide a citation to that requirement:

Section 19-2-104

42 U.S.C. 85, Part D, Section 7511a

10. Incorporation by Reference Information

Incorporation by Reference (if this rule incorporates more than two items by reference, please include additional tables):

A. This rule adds or updates the following title of material incorporated by reference (a copy of the material incorporated by reference must be submitted to the Office of Administrative Rules. If none, leave blank):

Official Title of Materials Incorporated (from title page)

Utah State Implementation Plan Section IX, Control Measures for Area and Point Sources, Part D, Ozone.

Publisher

Division of Air Quality, Utah Department of Environmental Quality

Issue Date

November 4, 2026

11. Public Notice Information

The public may submit written or oral comments to the agency identified in box 1.

A. Comments will be accepted until:

10/01/2026

B. A public hearing (optional) will be held (The public may request a hearing by submitting a written request to the agency, as outlined in Section 63G-3-302 and Rule R15-1.):

Date:

Time (hh:mm AM/PM):

Place (physical address or URL):

09/30/2026

10:00AM - 11:00AM

A public hearing is set for 09/30/2026.

Further details may be found below.

The hearing will be cancelled should no request for one be made by 09/282026 at 10 AM MT.

The final status of the public hearing will be posted on 09/28/2026, after 10 AM MT.

The status of the public hearing may be checked at the following website location under the corresponding rule:

https://deq.utah.gov/public-notices-archive/air-quality-rule-plan-changes-open-public-comment

Interested Persons can participate in person or electronically, via the internet.

In Person:

MASOB

195 N 1950 W, Salt Lake City, UT

First Floor, Air Quality Board Room

Virtual Attendance:

Time zone: America/Denver

Google Meet joining info:

Video call link:

https://meet.google.com/gvj-dexk-zby

Or dial: (US) +1 516-399-4901

PIN: 171 091 585#

12. Effective Date Information

This rule change MAY become effective on:

(NOTE: This is the date the agency anticipates making the filing effective. It is NOT the effective date)

11/04/2026

13. Agency Authorization Information

Agency head or

designee and title:

Bryce C. Bird, Director, Division of Air

Quality

Date:

07/14/2026

R307. Environmental Quality, Air Quality.

R307-110. General Requirements: State Implementation Plan.

R307-110-13. Section IX, Control Measures for Area and Point Sources, Part D, Ozone.

The Utah State Implementation Plan, Section IX, Control Measures for Area and Point Sources, Part D, Ozone, as most recently amended by the Utah Air Quality Board on [October 1, 2026]November 4, 2026, pursuant to Section 19-2-104, is incorporated by reference and made a part of

Rule R307-110.

KEY: air pollution, PM10, PM2.5, ozone

Date of Last Change: [July 1, 2026]2026

Notice of Continuation: December 1, 2021

Authorizing, and Implemented or Interpreted Law: 19-2-104

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