DAQ-2024-007466

195 North 1950 West • Salt Lake City, Utah
Mailing Address: P.O. Box 144820 • Salt Lake City, Utah 84114-4820
Telephone [phone] • Fax [phone] • T.D.D. [phone]
www.deq.utah.gov
Printed on 100% recycled paper
State of Utah

Department of
Environmental Quality

Kimberly D. Shelley
Executive Director

DIVISION OF AIR QUALITY
Bryce C. Bird
Director

Air Quality Board
Cassady Kristensen, Chair
Kim Frost, Vice-Chair
Michelle Bujdoso
Kevin R. Cromar
Randal S. Martin
Sonja Norton
John Rasband
Kimberly D. Shelley
Jeff Silvestrini
Bryce C. Bird,
Executive Secretary

SPENCER J. COX
Governor

DEIDRE HENDERSON
Lieutenant Governor
DAQ-038-24

UTAH AIR QUALITY BOARD MEETING
TENTATIVE AGENDA

Wednesday, May 1, 2024 - 1:30 p.m.
195 North 1950 West, Room 1015
Salt Lake City, Utah 84116

Board members may be participating electronically. Interested persons can participate telephonically by
dialing 1-475-299-8810 using access code: 449-801-632#, or via the Internet at meeting link:
meet.google.com/dpm-oqgm-nzk

I. Call-to-Order

II. Date of the Next Air Quality Board Meeting: June 5, 2024

III. Approval of the Minutes for the February 7, 2024, Board Meeting, and March 20, 2024, Board
Work Meeting.

IV. Propose for Public Comment: Amend R307-315. NOx Emission Controls for Natural Gas-Fired
Boilers 2.0-5.0 MMBtu. Presented by Ryan Bares.

V. Propose for Public Comment: Amend R307-316. NOx Emission Controls for Natural Gas-Fired
Boilers Greater Than 5.0 MMBtu. Presented by Ryan Bares.

VI. Informational Items.
A. Air Toxics. Presented by Leonard Wright.
B. Compliance. Presented by Harold Burge, Rik Ombach, and Chad Gilgen.
C. Monitoring. Presented by Sally Lloyd.
D. Other Items to be Brought Before the Board.
E. Board Meeting Follow-up Items.

In compliance with the Americans with Disabilities Act, individuals with special needs (including auxiliary communicative aids
and services) should contact LeAnn Johnson, Office of Human Resources at [phone], TDD [phone] or by email
at [e-mail].

ITEM 4

195 North 1950 West • Salt Lake City, Utah
Mailing Address: P.O. Box 144820 • Salt Lake City, UT 84114-4820
Telephone [phone] • Fax [phone] • T.D.D. [phone]
www.deq.utah.gov
Printed on 100% recycled paper
State of Utah

Department of
Environmental Quality

Kimberly D. Shelley
Executive Director

DIVISION OF AIR QUALITY
Bryce C. Bird
Director

SPENCER J. COX
Governor

DEIDRE HENDERSON
Lieutenant Governor
DAQ-039-24

MEMORANDUM

TO: Air Quality Board

THROUGH: Bryce C. Bird, Executive Secretary

THROUGH: Erica Pryor, Rules Coordinator

FROM: Ryan Bares, Environmental Scientist

DATE: April 18, 2024

SUBJECT: PROPOSE FOR PUBLIC COMMENT: Amend R307-315. NOx Emission Controls for
Natural Gas-Fired Boilers 2.0-5.0 MMBtu.
______________________________________________________________________________________

On August 3, 2018, the U.S. Environmental Protection Agency (EPA) designated Utah’s Northern Wasatch
Front (NWF) as a marginal nonattainment area (NAA) for the 2015 National Ambient Air Quality Standard
for 8-hour ozone concentrations (83 FR 25776). On October 7, 2022, EPA finalized the reclassification of
the NWF NAA from marginal to moderate status (87 FR 60897) because the area failed to attain the
standard by the attainment date. Monitoring data from 2021 through 2023 indicate that the area will not
attain the standard under the moderate timeline, and will be reclassified to serious nonattainment status in
early 2025.

As a result of these designations, the state of Utah is required to identify and implement reductions of
ozone precursor emissions, including volatile organic compounds (VOCs) and oxides of nitrogen (NOx), in
the NAA as part of its State Implementation Plan (SIP) obligations under section 172(c)(2) of the Clean Air
Act. On May 3, 2023, the Utah Air Quality Board adopted R307-315, NOx Emission Controls for Natural
Gas-Fired Boilers 2.0-5.0 MMBtu, as part of these efforts. Rule R307-315 reduces NOx emissions from
industrial, commercial, and institutional natural gas-fired boilers in Salt Lake, Weber, Davis, Tooele, and
Utah counties by requiring that any new boiler, or burner installed on a boiler, in these areas be certified to
emit no more than nine parts per million by volume (ppmv) of NOx while operating. These rules do not
require retrofits or replacements of any existing boilers and are only required for boilers operating on
pipeline quality natural gas, and thus do not apply to facilities which operate boilers using plant gas such as
refining operations.

DAQ-039-24
Page 2

As a result of feedback received from discussion by the Utah Air Quality Board during the final adoption
of R307-315, conversations with boiler manufacturers and distributors, as well as feedback from sources as
they work towards the initial implementation date, the Utah Division of Air Quality is proposing the
following minor amendments to R307-315:
1) Moving applicability language originally located in Section R307-315-4 to Section R307-315-2;
2) a carbon monoxide (CO) limit of 200 ppmv has been added;
3) a definition of “combustion analysis” was added; and
4) the definitions of “construction” and “modification” were modified.

These amendments are proposed in efforts to:
1) Clarify the applicability of the rule while making it easier to read;
2) provide additional mechanisms to verify compliance with the rule;
3) provide clarity for how compliance with the rule can be achieved; and
4) bring definitions in line with the intent of the rule while simultaneously making these definitions
more consistent with those found elsewhere in state and federal rules.

The division anticipates that a 30-day public comment period for the proposed amendments would run
from May 15, 2024, to June 14, 2024. This timeline would give stakeholders a total of 45 days from
proposal to close of the public comment period to review the proposed amendments and provide comment
to the division.

Recommendation: Staff recommends the Board approve amendments to R307-315, NOx Emission
Controls for Natural Gas-Fired Boilers 2.0-5.0 MMBtu, for a 30-day public comment period.
State of Utah
Administrative Rule Analysis
Revised May 2023

NOTICE OF PROPOSED RULE
TYPE OF FILING: Amendment
Title No. - Rule No. - Section No.
Rule or Section Number: R307-315 Filing ID: Office Use Only

Agency Information
1. Department: Environmental Quality
Agency: Air Quality
Room number:
Building: MASOB
Street address: 195 N 1950 W
City, state and zip: Salt Lake City
Mailing address: PO BOX 144820
City, state and zip: Salt Lake City, UT 84114-4820
Contact persons:
Name: Phone: Email:
Ryan Bares 801-536-4216 [e-mail]
Erica Pryor 385-499-3416 [e-mail]

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

General Information
2. Rule or section catchline:
R307-315. NOx Emission Controls for Natural Gas-Fired Boilers 2.0-5.0 MMBtu.

3. Purpose of the new rule or reason for the change:
Based on feedback received from the Air Quality Board during original adoption of Rule R307-315, from engagement with
manufacturers, and from sources complying with the original rule, the Division is proposing changes to provide clarifying
language for the applicability and compliance of rule R307-315.

4. Summary of the new rule or change:
The proposed amendments modify and add additional definitions and language intended to clarify compliance and applicability
of rule R307-315. These amendments: 1) add a carbon monoxide limit which provides clarity for compliance with the rule, 2)
adds in the definition of “combustion analysis” to provide additional guidance for compliance, 3) modifies the definitions of
“modification” and “construction” to clarify the intent of the rule, the applicability of the rule, and makes these definitions more
consistent with federal definitions, and 4) moves applicability language from Subsection R307-315-4 to the applicability
Subsection in R307-315-2 to provide additional clarity for when the rule is applicable.

Fiscal Information
5. Provide an estimate and written explanation of the aggregate anticipated cost or savings to:
A) State budget:
There are no anticipated costs or savings to the state budget as the amendments will have no impact on how the Division of Air
Quality functions. The proposed amendments provide additional clarity around applicability and compliance with the rule;
however, do not expand the applicability beyond the original intent of the rule. Therefore, the changes do not result in any costs
or savings beyond those identified with the original adoption of rule R307-315, nor do the changes to the rule result in any
functional changes to how the Division implements the rule.

B) Local governments:
There are no anticipated costs or savings to local governments associated with the amendments. The proposed amendments
provide additional clarity around applicability and compliance with the rule; however, do not expand the applicability beyond the
original intent of the rule. Therefore, the changes do not result in any costs or savings beyond those identified with the original
adoption of rule R307-315.

C) Small businesses ("small business" means a business employing 1-49 persons):
There are no anticipated costs or savings for small businesses associated with the amendments. The proposed amendments
provide additional clarity around applicability and compliance with the rule; however, do not expand the applicability beyond the
original intent of the rule. Therefore, the changes do not result in any costs or savings beyond those identified with the original
adoption of rule R307-315.

D) Non-small businesses ("non-small business" means a business employing 50 or more persons):
There are no anticipated costs or savings to non-small businesses associated with the amendments. The proposed
amendments provide additional clarity around applicability and compliance with the rule; however, do not expand the
applicability beyond the original intent of the rule. Therefore, the changes do not result in any costs or savings beyond those
identified with the original adoption of rule R307-315.

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):
There are no anticipated costs or savings to persons other small businesses, non-small businesses, state, or local government
entities associated with the amendments. The proposed amendments provide additional clarity around applicability and
compliance with the rule; however, do not expand the applicability beyond the original intent of the rule. Therefore, the changes
do not result in any costs or savings beyond those identified with the original adoption of rule R307-315.

F) Compliance costs for affected persons (How much will it cost an impacted entity to adhere to this rule or its changes?):
There are no anticipated compliance costs or savings for affected persons associated with the amendments. The proposed
amendments provide additional clarity around applicability and compliance with the rule; however, do not expand the
applicability beyond the original intent of the rule. Therefore, the changes do not result in any costs or savings beyond those
identified with the original adoption of rule R307-315.

G) Regulatory Impact Summary Table (This table only includes fiscal impacts that could be measured. If there are
inestimable fiscal impacts, they will not be included in this table. Inestimable impacts will be included in narratives above.)
Regulatory Impact Table
Fiscal Cost FY2024 FY2025 FY2026
State Government $0 $0 $0
Local Governments $0 $0 $0
Small Businesses $0 $0 $0
Non-Small Businesses $0 $0 $0
Other Persons $0 $0 $0
Total Fiscal Cost $0 $0 $0
Fiscal Benefits FY2024 FY2025 FY2026
State Government $0 $0 $0
Local Governments $0 $0 $0
Small Businesses $0 $0 $0
Non-Small Businesses $0 $0 $0
Other Persons $0 $0 $0
Total Fiscal Benefits $0 $0 $0
Net Fiscal Benefits $0 $0 $0
H) Department head comments on fiscal impact and approval of regulatory impact analysis:
The Executive Director of Environmental Quality, Kim D. Shelley, has reviewed and approved this regulatory impact analysis.

Citation Information
6. 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 U.S.C. Title 42 Chapter 85 Subchapter I
Part A Section 7410 (a)(1) 2 (A)

Incorporations by Reference Information
7. Incorporations by Reference (if this rule incorporates more than two items by reference, please include additional tables):
A) This rule adds, updates, or removes the following title of materials incorporated by references (a copy of materials
incorporated by reference must be submitted to the Office of Administrative Rules; if none, leave blank):
Official Title of Materials Incorporated
(from title page)

Publisher
Issue Date
Issue or Version

B) This rule adds, updates, or removes the following title of materials incorporated by references (a copy of materials
incorporated by reference must be submitted to the Office of Administrative Rules; if none, leave blank):
Official Title of Materials Incorporated
(from title page)

Publisher
Issue Date
Issue or Version

Public Notice Information
8. The public may submit written or oral comments to the agency identified in box 1. (The public may also request a
hearing by submitting a written request to the agency. See Section 63G-3-302 and Rule R15-1 for more information.)
A) Comments will be accepted until: 06/14/2024
B) A public hearing (optional) will be held:
Date (mm/dd/yyyy): Time (hh:mm AM/PM): Place (physical address or URL):
06/12/2024 2:00-3:00 PM R307-315/316 Public Hearing

Wednesday, June, 2024, 12 ꞏ 2:00 – 3:00pm

In Person

Multi-Agency State Office Building (MASOB) 195 N
1950 W, Salt Lake City, UT 84116, USA
Air Quality Board Room 1015, 1st Floor

Or attend virtually:

Time zone: America/Denver

Google Meet joining info:

Video call link: https://meet.google.com/ovb-vgei-uun

Or dial: 1158-408-224 1(US) + PIN: 602 060 317 #

More phone numbers: https://tel.meet/ovb-vgei-
uun?pin=6012657426852

In accordance with 63G-3-302, please note that if no
requests for a public hearing for R307-315 and/or
R307-316 are received by 2:00pm on Jun 11th, 2024,
then we will cancel this hearing.

To determine if the hearing has been cancelled
and/or view the cancellation notice, you can visit:

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

To the agency: If more space is needed for a physical address or URL, refer readers to Box 4 in General Information. If more
than two hearings will take place, continue to add rows.

9. This rule change MAY become effective on: 06/21/2024
NOTE: The date above is the date the agency anticipates making the rule or its changes effective. It is NOT the effective date.

Agency Authorization Information
To the agency: Information requested on this form is required by Sections 63G-3-301, 63G-3-302, 63G-3-303, and 63G-3-
402. Incomplete forms will be returned to the agency for completion, possibly delaying publication in the Utah State Bulletin
and delaying the first possible effective date.
Agency head or
designee and title:
Bryce C. Bird, Director, Division of Air
Quality
Date: 04/16/2024

R307. Environmental Quality, Air Quality. 1
R307-315. NOx and CO Emission Controls for Natural Gas-Fired Boilers 2.0-5.0 MMBtu. 2
R307-315-1. Purpose. 3
Rule R307-315 establishes maximum emission thresholds for the emissions of oxides of nitrogen 4
(NOx) and carbon monoxide (CO) for new or modified natural gas-fired boilers with a total rated heat 5
input of at least 2.0 million British Thermal Units per hour (MMBtu/hr) and not more than 5.0 6
MMBtu/hr. 7
8
R307-315-2. Applicability. 9
(1) Rule R307-315 applies to each boiler that[ begins construction or modification after the10
compliance date defined in Section R307-315-6 that]: 11
(a) is fueled exclusively by natural gas;12
(b) has a total rated heat input greater than 2.0 MMBtu/hr and not more than 5.0 MMBtu/hr;13
(c) is an industrial boiler, institutional boiler, or commercial boiler;14
(d) is located in Salt Lake, Utah, Davis, Weber, or Tooele County; and15
(e) [is not a temporary boiler.]undergoes one of the following after the compliance date defined16
in Subsection R307-315-6(3): 17
(i) begins construction, or modification of a boiler;18
(ii) replaces a burner in a boiler having only a single burner; or19
(iii) replaces 50% or more of the burners in a multi-burner boiler.20
(2) Exemptions to this rule include:21
(a) residential boilers as defined in this rule;22
(b) CO boilers as defined in this rule;23
(c) waste heat boilers as defined by this rule;[ and]24
(d) process heaters as defined by this rule[.]; and25
(e) temporary boilers as defined by this rule.26
27
R307-315-3. Definitions. 28
As used in this rule: 29
"Boiler" means an enclosed device using controlled flame combustion of natural gas, as defined 30
by this rule, in which water is heated to recover thermal energy in the form of steam or hot water. 31
Controlled flame combustion refers to a steady-state, or near steady-state, process wherein fuel or 32
oxidizer feed rates are controlled. 33
"Burner" means the functional component of a boiler that provides the heat input by combustion 34
of a fossil fuel, with air or oxygen. Burners are available either as part of the boiler package from the 35
manufacturer, as stand-alone products for custom installations, or as replacement products. 36
"CO boiler" means a boiler that is fired with gaseous fuel with an integral waste heat recovery 37
system used to oxidize CO-rich waste gases generated by a Fluid Catalytic Cracking Unit. 38
“Combustion analysis” means an analysis performed on flue gases using a portable instrument 39
which measures a range of variables relevant to the byproducts of combustion including temperatures, 40
draft pressure, concentrations of oxygen, and concentrations of pollutants. 41
"Commercial boiler" means a boiler used in commercial establishments such as hotels, 42
restaurants, and laundries to provide electricity, steam, or hot water. 43
"Construction" means any physical change or change in method of operation including 44
fabrication, erection, installation, demolition, or modification of an emission unit [boiler which] that 45
would result in a[n] potential increase in [actual NOx ]emissions. 46
"Industrial boiler" means a boiler used in manufacturing, processing, mining, and refining or any 47
other industry to provide steam, hot water, or electricity. 48
"Institutional boiler" means a boiler used in institutional establishments such as medical centers, 49
nursing homes, research centers, institutions of higher education, elementary and secondary schools, 50
libraries, religious establishments, and governmental buildings to provide electricity, steam, or hot water. 51
"Modification" means any planned change in a [boiler]source which results in a[n increase of 52
actual NOx] change in emissions. 53
"Natural gas" means: 54
Page 1 of 3
(1) a mixture of gaseous hydrocarbons, with at least 80% methane by volume, and of pipeline1
quality, such as the gas sold or distributed by any utility company regulated by the Utah Division of 2
Public Utilities; 3
(2) liquefied petroleum gas, as defined by the American Society for Testing and Materials in4
ASTM D1835, or propane, propane-derived synthetic natural gas, or mixtures thereof; or 5
(3) propane or propane-derived synthetic natural gas.6
"Process Heater" means an enclosed device using controlled flame, and the unit's primary purpose7
is to transfer heat indirectly to a process material such as liquid, gas, or solid, or to a heat transfer material 8
such as glycol or a mixture of glycol and water, for use in a process unit, instead of generating steam. 9
Process heaters are devices in which the combustion gases do not come into direct contact with process 10
materials. Process heaters include units that heat water and water mixtures for pool heating, sidewalk 11
heating, cooling tower water heating, power washing, or oil heating. 12
"Propane" means a colorless gas derived from petroleum and natural gas, with the molecular 13
structure C3H8. 14
"Residential boiler" means a boiler used to provide heat or hot water or as part of a residential 15
combined heat and power system. This definition includes boilers located at an institutional facility such 16
as a university campus, military base, church grounds, or a commercial, or industrial, such as a farm, used 17
primarily to provide heat or hot water for: 18
(1) a dwelling containing four or fewer families; or19
(2) a single unit residence dwelling that has since been converted or sub-divided into20
condominiums or apartments. 21
"Temporary boiler" means any gaseous or liquid fuel-fired steam generating unit that is designed 22
to, and is capable of, being carried or moved from one location to another by wheels, skids, carrying 23
handles, dollies, trailers, or platforms. A steam generating unit is not a temporary boiler if any one of the 24
following conditions exists: 25
(1) the equipment is attached to a foundation;26
(2) the steam generating unit or a replacement remains at a location for more than 18027
consecutive days and any temporary boiler that replaces a temporary boiler at a location and performs the 28
same or similar function shall be included in calculating the consecutive time period; 29
(3) the equipment is located at a seasonal facility and operates during the full annual operating30
period of the seasonal facility, remains at the facility for at least two years, and operates at that facility for 31
at least three months each year; or 32
(4) the equipment is moved from one location to another in an attempt to circumvent the33
residence time requirements of this definition. 34
"Waste heat boiler" means a device that recovers normally unused energy such as hot exhaust gas 35
and converts it to usable heat. Waste heat boilers are also referred to as heat recovery steam generators. 36
Waste heat boilers are heat exchangers generating steam from incoming hot exhaust gas from an 37
industrial or power equipment such as thermal oxidizers, kilns, furnaces, combustion turbines, and 38
engines. Duct burners are sometimes used to increase the temperature of the incoming hot exhaust gas. 39
40
R307-315-4. Requirements. 41
(1) An [person ]owner or operator of a boiler subject to this rule shall[ that]:42
[ (a) begins construction, or modification of a boiler;43
(b) replaces a burner in a boiler having only a single burner; or44
(c) replaces 50% or more of the burners in a multi-burner boiler for a boiler meeting the45
requirements of Section R307-315-2 shall install a burner that meets a NOx emission rate of nine parts per 46
million by volume (ppmv) or less at 3% volume stack gas oxygen on a dry basis.] 47
(a) install a burner that meets a NOx emission rate of nine parts per million by volume (ppmv) or48
less at 3% volume stack gas oxygen on a dry basis; and 49
(b) meet a CO emission rate of 200 ppmv or less at 3% volume stack gas oxygen on a dry basis.50
(2) An owner or operator of a boiler subject to Subsection R307-315-4(1) shall:51
(a) operate and maintain the boiler and boiler subsystems, including burners, according to the52
manufacturer's instructions; 53
(b) determine continued compliance based on Section R307-315-6; and54
Page 2 of 3
(c)meet the applicable recordkeeping requirements for any control device.1
2
R307-315-5. Recordkeeping. 3
(1) The owner or operator of any boiler subject to [Rule]Section R307-315-4 shall:4
(a) retain documentation of the unit's emission rate specifications;5
(b) retain a copy of the manufacturer's recommendations for proper operation and maintenance6
of units covered by Rule R307-315; and 7
(c)maintain records showing proper operation and maintenance of units covered by Rule R307-8
315 following manufacturer's recommendations. 9
(2) Operation and maintenance records shall be retained for five years and shall be made10
available to the director upon request. 11
12
R307-315-6. Compliance Schedule. 13
(1) Compliance with the NOx emission requirement listed in Subsection R307-315-4(1)(c) shall14
be determined according to the following procedures: 15
(a) U.S. EPA Reference Method 7E, Determination of Nitrogen Oxides Emissions from16
Stationary Sources; 17
(b) other EPA-approved testing methods acceptable to the Director; or18
(c) combustion analysis as part of a regular maintenance schedule.19
(2) Compliance Determination shall be conducted once every five years.20
(3) The compliance schedule for this rule shall begin on May 1, 2024.21
22
KEY: air pollution, boiler, NOx, nitrogen oxides 23
Date of Last Change: July 10, 2023 24
Authorizing, and Implemented or Interpreted Law: 19-2-104 25
Page 3 of 3

ITEM 5

195 North 1950 West • Salt Lake City, Utah
Mailing Address: P.O. Box 144820 • Salt Lake City, UT 84114-4820
Telephone [phone] • Fax [phone] • T.D.D. [phone]
www.deq.utah.gov
Printed on 100% recycled paper
State of Utah

Department of
Environmental Quality

Kimberly D. Shelley
Executive Director

DIVISION OF AIR QUALITY
Bryce C. Bird
Director

SPENCER J. COX
Governor

DEIDRE HENDERSON
Lieutenant Governor
DAQ-040-24

MEMORANDUM

TO: Air Quality Board

THROUGH: Bryce C. Bird, Executive Secretary

THROUGH: Erica Pryor, Rules Coordinator

FROM: Ryan Bares, Environmental Scientist

DATE: April 18, 2024

SUBJECT: PROPOSE FOR PUBLIC COMMENT: Amend R307-316. NOx Emission Controls for
Natural Gas-Fired Boilers Greater Than 5.0 MMBtu.
______________________________________________________________________________________

On August 3, 2018, the U.S. Environmental Protection Agency (EPA) designated Utah’s Northern Wasatch
Front (NWF) as a marginal nonattainment area (NAA) for the 2015 National Ambient Air Quality Standard
for 8-hour ozone concentrations (83 FR 25776). On October 7, 2022, EPA finalized the reclassification of
the NWF NAA from marginal to moderate status (87 FR 60897) because the area failed to attain the
standard by the attainment date. Monitoring data from 2021 through 2023 indicate that the area will not
attain the standard under the moderate timeline, and will be reclassified to serious nonattainment status in
early 2025.

As a result of these designations, the state of Utah is required to identify and implement reductions of
ozone precursor emissions, including volatile organic compounds (VOCs) and oxides of nitrogen (NOx), in
the NAA as part of its State Implementation Plan (SIP) obligations under section 172(c)(2) of the Clean Air
Act. On May 3, 2023, the Utah Air Quality Board adopted R307-316, NOx Emission Controls for Natural
Gas-Fired Boilers Greater Than 5.0 MMBtu, as part of these efforts. Rule R307-316 reduces NOx
emissions from industrial, commercial, and institutional natural gas-fired boilers in Salt Lake, Weber,
Davis, Tooele, and Utah counties by requiring that any new boiler, or burner installed on a boiler, in these
areas be certified to emit no more than nine parts per million by volume (ppmv) of NOx while operating.
These rules do not require retrofits or replacements of any existing boilers and are only required for boilers
operating on pipeline quality natural gas, and thus do not apply to facilities which operate boilers using
plant gas such as refining operations.

DAQ-040-24
Page 2

As a result of feedback received from discussion by the Utah Air Quality Board during the final adoption
of R307-316, conversations with boiler manufacturers and distributors, as well as feedback from sources as
they work towards the initial implementation date, the Utah Division of Air Quality is proposing the
following minor amendments to R307-316:
1) Moving applicability language originally located in Section R307-316-4 to Section R307-316-2;
2) a carbon monoxide (CO) limit of 200 ppmv has been added;
3) a definition of “combustion analysis” was added; and
4) the definitions of “construction” and “modification” were modified.

These amendments are proposed in efforts to:
1) Clarify the applicability of the rule while making it easier to read;
2) provide additional mechanisms to verify compliance with the rule;
3) provide clarity for how compliance with the rule can be achieved; and
4) bring definitions in line with the intent of the rule while simultaneously making these definitions
more consistent with those found elsewhere in state and federal rules.

The division anticipates that a 30-day public comment period for the proposed amendments would run
from May 15, 2024, to June 14, 2024. This timeline would give stakeholders a total of 45 days from
proposal to close of the public comment period to review the proposed amendments and provide comment
to the division.

Recommendation: Staff recommends the Board approve amendments to R307-316, NOx Emission
Controls for Natural Gas-Fired Boilers Greater Than 5.0 MMBtu, for a 30-day public comment period.
State of Utah
Administrative Rule Analysis
Revised May 2023

NOTICE OF PROPOSED RULE
TYPE OF FILING: Amendment
Title No. - Rule No. - Section No.
Rule or Section Number: R307-316 Filing ID: Office Use Only

Agency Information
1. Department: Environmental Quality
Agency: Air Quality
Room number:
Building: MASOB
Street address: 195 N 1950 W
City, state and zip: Salt Lake City
Mailing address: PO BOX 144820
City, state and zip: Salt Lake City, UT 84114-4820
Contact persons:
Name: Phone: Email:
Ryan Bares 801-536-4216 [e-mail]
Erica Pryor 385-499-3416 [e-mail]

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

General Information
2. Rule or section catchline:
R307-316. NOx Emission Controls for Natural Gas-Fired Boilers Greater Than 5.0 MMBtu

3. Purpose of the new rule or reason for the change:
Amendments provide clarifying language for the applicability and compliance of rule R307-315.Based on feedback received
from the Air Quality Board during original adoption of rule, from engagement with manufacturers, and from sources complying
with the original rule, the Division is proposing changes to provide clarifying language for the applicability and compliance of
rule R307-316.

4. Summary of the new rule or change:
The proposed amendments modify and add additional definitions and language intended to clarify compliance and applicability
of rule R307-316. These amendments: 1) add a carbon monoxide limit which provides clarity for compliance with the rule, 2)
adds in the definition of “combustion analysis” to provide additional guidance for compliance, 3) modifies the definitions of
“modification” and “construction” to clarify the intent of the rule, the applicability of the rule, and makes these definitions more
consistent with federal definitions, and 4) moves applicability language from Section R307-316-4 to the applicability Subsection
in Section R307-316-2 to provide additional clarity for when the rule is applicable.

Fiscal Information
5. Provide an estimate and written explanation of the aggregate anticipated cost or savings to:
A) State budget:
There are no anticipated costs or savings to the state budget as the amendments will have no impact on how the Division of Air
Quality functions. The proposed amendments provide additional clarity around applicability and compliance with the rule;
however, do not expand the applicability beyond the original intent of the rule. Therefore, the changes do not result in any costs
or savings beyond those identified with the original adoption of rule R307-316, nor do the changes to the rule result in any
functional changes to how the Division implements the rule.

B) Local governments:
There are no anticipated costs or savings to local governments associated with the amendments. The proposed amendments
provide additional clarity around applicability and compliance with the rule; however, do not expand the applicability beyond the
original intent of the rule. Therefore, the changes do not result in any costs or savings beyond those identified with the original
adoption of rule R307-316.

C) Small businesses ("small business" means a business employing 1-49 persons):
There are no anticipated costs or savings for small businesses associated with the amendments. The proposed amendments
provide additional clarity around applicability and compliance with the rule; however, do not expand the applicability beyond the
original intent of the rule. Therefore, the changes do not result in any costs or savings beyond those identified with the original
adoption of rule R307-316.
D) Non-small businesses ("non-small business" means a business employing 50 or more persons):
There are no anticipated costs or savings for non-small businesses associated with the amendments. The proposed
amendments provide additional clarity around applicability and compliance with the rule; however, do not expand the
applicability beyond the original intent of the rule. Therefore, the changes do not result in any costs or savings beyond those
identified with the original adoption of rule R307-316.

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):
There are no anticipated costs or savings to persons other small businesses, non-small businesses, state, or local government
entities associated with the amendments. The proposed amendments provide additional clarity around applicability and
compliance with the rule; however, do not expand the applicability beyond the original intent of the rule. Therefore, the changes
do not result in any costs or savings beyond those identified with the original adoption of rule R307-316.

F) Compliance costs for affected persons (How much will it cost an impacted entity to adhere to this rule or its changes?):
There are no anticipated compliance costs or savings for affected persons associated with the amendments. The proposed
amendments provide additional clarity around applicability and compliance with the rule; however, do not expand the
applicability beyond the original intent of the rule. Therefore, the changes do not result in any costs or savings beyond those
identified with the original adoption of rule R307-316.

G) Regulatory Impact Summary Table (This table only includes fiscal impacts that could be measured. If there are
inestimable fiscal impacts, they will not be included in this table. Inestimable impacts will be included in narratives above.)
Regulatory Impact Table
Fiscal Cost FY2024 FY2025 FY2026
State Government $0 $0 $0
Local Governments $0 $0 $0
Small Businesses $0 $0 $0
Non-Small Businesses $0 $0 $0
Other Persons $0 $0 $0
Total Fiscal Cost $0 $0 $0
Fiscal Benefits FY2024 FY2025 FY2026
State Government $0 $0 $0
Local Governments $0 $0 $0
Small Businesses $0 $0 $0
Non-Small Businesses $0 $0 $0
Other Persons $0 $0 $0
Total Fiscal Benefits $0 $0 $0
Net Fiscal Benefits $0 $0 $0
H) Department head comments on fiscal impact and approval of regulatory impact analysis:
The Executive Director of Environmental Quality, Kim D. Shelley, has reviewed and approved this regulatory impact analysis.

Citation Information
6. 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 U.S.C. Title 42 Chapter 85 Subchapter I
Part A Section 7410 (a)(1)2(A)

Incorporations by Reference Information
7. Incorporations by Reference (if this rule incorporates more than two items by reference, please include additional tables):
A) This rule adds, updates, or removes the following title of materials incorporated by references (a copy of materials
incorporated by reference must be submitted to the Office of Administrative Rules; if none, leave blank):
Official Title of Materials Incorporated
(from title page)

Publisher
Issue Date
Issue or Version

B) This rule adds, updates, or removes the following title of materials incorporated by references (a copy of materials
incorporated by reference must be submitted to the Office of Administrative Rules; if none, leave blank):
Official Title of Materials Incorporated
(from title page)

Publisher
Issue Date
Issue or Version

Public Notice Information
8. The public may submit written or oral comments to the agency identified in box 1. (The public may also request a
hearing by submitting a written request to the agency. See Section 63G-3-302 and Rule R15-1 for more information.)
A) Comments will be accepted until: 06/14/2024
B) A public hearing (optional) will be held:
Date (mm/dd/yyyy): Time (hh:mm AM/PM): Place (physical address or URL):
06/12/2024 2:00-3:00 PM R307-315/316 Public Hearing

Wednesday, June 12, 2024 2:00 – 3:00pm

In Person

Multi-Agency State Office Building (MASOB) 195 N
1950 W, Salt Lake City, UT 84116, USA
Air Quality Board Room 1015, 1st Floor

Or attend virtually:

Time zone: America/Denver

Google Meet joining info:

Video call link: https://meet.google.com/ovb-vgei-uun

Or dial: 1158-408-224 1(US) + PIN: 602 060 317 #

More phone numbers: https://tel.meet/ovb-vgei-
uun?pin=6012657426852

In accordance with 63G-3-302, please note that if no
requests for a public hearing for R307-315 and/or
R307-316 are received by 2:00pm on Jun 11th, 2024,
then we will cancel this hearing.

To determine if the hearing has been cancelled
and/or view the cancellation notice, you can visit:

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

To the agency: If more space is needed for a physical address or URL, refer readers to Box 4 in General Information. If more
than two hearings will take place, continue to add rows.

9. This rule change MAY become effective on: 06/21/2024
NOTE: The date above is the date the agency anticipates making the rule or its changes effective. It is NOT the effective date.

Agency Authorization Information
To the agency: Information requested on this form is required by Sections 63G-3-301, 63G-3-302, 63G-3-303, and 63G-3-
402. Incomplete forms will be returned to the agency for completion, possibly delaying publication in the Utah State Bulletin
and delaying the first possible effective date.
Agency head or
designee and title:
Bryce C. Bird, Director, Division of Air
Quality
Date: 04/16/2024

R307. Environmental Quality, Air Quality. 1
R307-316. NOx and CO Emission Controls for Natural Gas-Fired Boilers Greater Than 5.0 2
MMBtu. 3
R307-316-1. Purpose. 4
Rule R307-316 establishes maximum emission thresholds for the emissions of oxides of nitrogen 5
(NOx) and carbon monoxide (CO) for new or modified natural gas-fired boilers with a total rated heat 6
input greater than 5.0 million British Thermal Units per hour (MMBtu/hr). 7
8
R307-316-2. Applicability. 9
(1) Rule R307-316 applies to each boiler that[ begins construction or modification after the10
compliance date defined in Section R307-316-6 that]: 11
(a) is fueled exclusively by natural gas;12
(b) has a total rated heat input greater than 5.0 MMBtu/hr;13
(c) is an industrial boiler, institutional boiler, or commercial boiler;14
(d) is located in Salt Lake, Utah, Davis, Weber, or Tooele County; and15
(e) [is not a temporary boiler.]undergoes one of the following after the compliance date defined16
in Subsection R307-316-6(4): 17
(i) begins construction, or modification of a boiler;18
(ii) replaces a burner in a boiler having only a single burner; or19
(iii) replaces 50% or more of the burners in a multi-burner boiler.20
(2) [Exemptions to this rule include]Rule R307-316 do not apply to:21
(a) residential boilers as defined in this rule;22
(b) CO boilers as defined in this rule;23
(c) waste heat boilers as defined by this rule;[ and]24
(d) process heaters as defined by this rule[.]; and25
(e) temporary boilers as defined by this rule.26
(3) References to 40 CFR in Rule R307-316 shall mean the version of the Code of Federal27
Regulations that is effective as of the date referenced in Section R307-101-3. 28
29
R307-316-3. Definitions. 30
As used in this rule: 31
"Boiler" means an enclosed device using controlled flame combustion of natural gas, as defined 32
by this rule, in which water is heated to recover thermal energy in the form of steam or hot water. 33
Controlled flame combustion refers to a steady-state, or near steady-state, process wherein fuel or 34
oxidizer feed rates are controlled. 35
"Burner" means the functional component of a boiler that provides the heat input by combustion 36
of a fossil fuel with air or oxygen. Burners are available either as part of the boiler package from the 37
manufacturer, as stand-alone products for custom installations, or as replacement products. 38
"CO boiler" means a boiler that is fired with gaseous fuel with an integral waste heat recovery 39
system used to oxidize CO-rich waste gases generated by a Fluid Catalytic Cracking Unit. 40
“Combustion analysis” means an analysis performed on flue gases using a portable instrument 41
which measures a range of variables relevant to the byproducts of combustion including temperatures, 42
draft pressure, concentrations of oxygen, and concentrations of pollutants. 43
"Commercial boiler" means a boiler used in commercial establishments such as hotels, 44
restaurants, and laundries to provide electricity, steam, or hot water. 45
"Construction" means any physical change or change in method of operation including 46
fabrication, erection, installation, demolition, or modification of an emission unit [boiler which ]that 47
would result in a[n] potential increase in [actual NOx ]emissions. 48
"Industrial boiler" means a boiler used in manufacturing, processing, mining, and refining or any 49
other industry to provide steam, hot water, or electricity. 50
"Institutional boiler" means a boiler used in institutional establishments such as medical centers, 51
nursing homes, research centers, institutions of higher education, elementary and secondary schools, 52
libraries, religious establishments, and governmental buildings to provide electricity, steam, or hot water. 53
Page 1 of 3
"Modification" means any planned change in a [boiler]source which results in a[n increase of 1
actual NOx] change in emissions. 2
"Natural gas" means: 3
(1) a mixture of gaseous hydrocarbons, with at least 80% methane by volume, and of pipeline4
quality, such as the gas sold or distributed by any utility company regulated by the Utah Division of 5
Public Utilities; 6
(2) Liquefied petroleum gas, as defined by the American Society for Testing and Materials in7
ASTM D1835, or propane, propane-derived synthetic natural gas, or mixtures thereof; or 8
(3) propane or propane-derived synthetic natural gas.9
"Process Heater" means an enclosed device using controlled flame, and the unit's primary purpose10
is to transfer heat indirectly to a process material such as liquid, gas, or solid, or to a heat transfer material 11
such as glycol or a mixture of glycol and water, for use in a process unit, instead of generating steam. 12
Process heaters are devices in which the combustion gases do not come into direct contact with process 13
materials. Process heaters include units that heat water and water mixtures for pool heating, sidewalk 14
heating, cooling tower water heating, power washing, or oil heating. 15
"Propane" means a colorless gas derived from petroleum and natural gas, with the molecular 16
structure C3H8. 17
"Residential boiler" means a boiler used to provide heat or hot water as part of a residential 18
combined heat and power system. This definition includes boilers located at an institutional facility such 19
as a university campus, military base, church grounds or commercial or industrial facility such as a farm 20
used primarily to provide heat or hot water for: 21
(1) a dwelling containing four or fewer families; or22
(2) a single unit residence dwelling that has since been converted or sub-divided into23
condominiums or apartments. 24
"Temporary boiler" means any gaseous or liquid fuel-fired steam generating unit that is designed 25
to, and is capable of, being carried or moved from one location to another by wheels, skids, carrying 26
handles, dollies, trailers, or platforms. A steam generating unit is not a temporary boiler if any one of the 27
following conditions exists: 28
(1) the equipment is attached to a foundation;29
(2) the steam generating unit or a replacement remains at a location for more than 18030
consecutive days. Any temporary boiler that replaces a temporary boiler at a location and performs the 31
same or similar function shall be included in calculating the consecutive time period; 32
(3) the equipment is located at a seasonal facility and operates during the full annual operating33
period of the seasonal facility, remains at the facility for at least two years, and operates at that facility for 34
at least three months each year; or 35
(4) the equipment is moved from one location to another in an attempt to circumvent the36
residence time requirements of this definition. 37
"Waste heat boiler" means a device that recovers normally unused energy such as hot exhaust gas 38
and converts it to usable heat. Waste heat boilers are also referred to as heat recovery steam generators. 39
Waste heat boilers are heat exchangers generating steam from incoming hot exhaust gas from an 40
industrial or power equipment such as thermal oxidizers, kilns, furnaces, combustion turbines, and 41
engines. Duct burners are sometimes used to increase the temperature of the incoming hot exhaust gas. 42
43
R307-316-4. Requirements. 44
(1) Except as provided in Subsection R307-316-4(3), an [person]owner or operator of a boiler45
subject to this rule shall[ that]: 46
[ (a) begins construction, or modification of a boiler;47
(b) replaces a burner in a boiler having only a single burner; or48
(c) replaces 50% or more of the burners in a multi-burner boiler for a boiler meeting the49
requirements of Section R307-316-2 shall install a burner that meets a NOx emission rate of nine parts per 50
million by volume (ppmv) or less at 3% volume stack gas oxygen on a dry basis.] 51
(a) install a burner that meets a NOx emission rate of nine parts per million by volume (ppmv) or52
less at 3% volume stack gas oxygen on a dry basis; and 53
(b) meet a CO emission rate of 200 ppmv or less at 3% volume stack gas oxygen on a dry basis.54
Page 2 of 3
(2) An owner or operator of a boiler subject to Subsection R307-316-4(1) shall:1
(a) operate and maintain the boiler and boiler subsystems, including burners, according to the2
manufacturer's instructions; 3
(b) determine continued compliance based on Section R307-315-6; and4
(c) ensure that manufacturer's operational specifications, records, and testing of any control5
system shall use the applicable EPA Reference Methods of 40 CFR Part 60, the most recent EPA test 6
methods, or EPA-approved state methods, to determine the efficiency of the control device; and 7
(d) meet the applicable recordkeeping requirements for any control device.8
(3) Any person may apply to the director for approval of an alternate method of control. The9
application shall include a demonstration that the proposed alternate produces an equal air quality benefit 10
as required by Subsection R307-316-4(1)(c) or that meets Best Available Control Technology thresholds. 11
12
R307-316-5. Recordkeeping. 13
(1) The owner or operator of any boiler subject to [Rule]Section R307-316-4 shall:14
(a) retain documentation of the unit's emission rate specifications;15
(b) retain a copy of the manufacturer's recommendations for proper operation and maintenance16
of units covered by Rule R307-316; 17
(c)maintain records showing proper operation and maintenance of units covered by Rule R307-18
316 following manufacturer's recommendations; and 19
(d) retain a record of approval of any alternative method of control as outlined in Subsection20
R307-316-4(3). 21
(2) Operation and maintenance records shall be retained for five years and shall be made22
available to the director upon request. 23
24
R307-316-6. Compliance Determination and Schedule. 25
(1) Compliance with the NOx emission requirement listed in Subsection R307-316-4(1)(c) shall26
be determined according to the following procedures: 27
(a) U.S.EPA Reference Method 7E, Determination of Nitrogen Oxides Emissions from28
Stationary Sources; 29
(b) a continuous in-stack nitrogen oxide monitor or equivalent verification system in compliance30
with 40 CFR Part 60 Appendix B Specification 2; 31
(c) other EPA-approved testing methods acceptable to the director; or32
(d) combustion analysis as part of a regular maintenance schedule.33
(2) Compliance Determination shall be conducted according to the following frequency:34
(a) once every three years for units with a rated heat input capacity greater than or equal to 1035
MMBtu/hr, except for boilers subject to Subsection R307-316-6(1)(b); and 36
(b) once every five years for units with a rated heat input capacity less than 10 MMBtu/hr down37
to and including 5 MMBtu/hr. 38
(3) Provided an emissions test is conducted within the same calendar year as the test required in39
Subsection R307-316-6(2), an owner or operator may use the following emissions tests to comply with 40
Subsection R307-316-6(2): 41
(a) periodic monitoring or testing of a unit as required in a Title V permit; or42
(b) relative accuracy testing for continuous emissions monitoring verification pursuant to 4043
CFR Part 60 Appendix B Specification 2. 44
(4) The compliance schedule for this rule shall begin on May 1, 2024.45
46
KEY: air pollution, boiler, NOx, nitrogen oxides 47
Date of Last Change: July 10, 2023 48
Authorizing, and Implemented or Interpreted Law: 19-2-104 49
Page 3 of 3

ITEM 6
Air Toxics

195 North 1950 West • Salt Lake City, Utah
Mailing Address: P.O. Box 144820 • Salt Lake City, Utah 84114-4820
Telephone [phone] • Fax [phone] • T.D.D [phone]
www.deq.utah.gov
Printed on 100% recycled paper
State of Utah

SPENCER J. COX
Governor

DEIDRE HENDERSON
Lieutenant Governor
Department of
Environmental Quality

Kimberly D. Shelley
Executive Director

DIVISION OF AIR QUALITY
Bryce C. Bird
Director

DAQA-067-24

M E M O R A N D U M

TO: Air Quality Board

FROM: Bryce C. Bird, Executive Secretary

DATE: February 5, 2024

SUBJECT: Air Toxics, Lead-Based Paint, and Asbestos (ATLAS) Section Compliance Activities –
January 2024
______________________________________________________________________________________

Asbestos Demolition/Renovation NESHAP Inspections 14
Asbestos AHERA Inspections 13
Asbestos State Rules Only Inspections 5
Asbestos Notification Forms Accepted 143
Asbestos Telephone Calls 349
Asbestos Individuals Certifications Approved 164
Asbestos Company Certifications 11
Asbestos Alternate Work Practices Approved 2
Lead-Based Paint (LBP) Inspections 3
LBP Notification Forms Approved 0
LBP Telephone Calls 58
LBP Letters Prepared and Mailed 1
LBP Courses Reviewed/Approved 0
LBP Course Audits 0
LBP Individual Certifications Approved 16
DAQA-067-24
Page 2

LBP Firm Certifications 14
Notices of Violation Sent 0
Compliance Advisories Sent 12
Warning Letters Sent 6
Settlement Agreements Finalized 2
Penalties Agreed to:
Sequoia/Preserve Partners/Erney Markisich 13,045.00
Sahara Palms, Inc./Chase Hughes 800.00
Total: 13,845.00

195 North 1950 West • Salt Lake City, Utah
Mailing Address: P.O. Box 144820 • Salt Lake City, Utah 84114-4820
Telephone [phone] • Fax [phone] • T.D.D [phone]
www.deq.utah.gov
Printed on 100% recycled paper
State of Utah

SPENCER J. COX
Governor

DEIDRE HENDERSON
Lieutenant Governor
Department of
Environmental Quality

Kimberly D. Shelley
Executive Director

DIVISION OF AIR QUALITY
Bryce C. Bird
Director

DAQA-141-24

M E M O R A N D U M

TO: Air Quality Board

FROM: Bryce C. Bird, Executive Secretary

DATE: March 4, 2024

SUBJECT: Air Toxics, Lead-Based Paint, and Asbestos (ATLAS) Section Compliance Activities –
February 2024
______________________________________________________________________________________

Asbestos Demolition/Renovation NESHAP Inspections 16
Asbestos AHERA Inspections 16
Asbestos State Rules Only Inspections 3
Asbestos Notification Forms Accepted 154
Asbestos Telephone Calls 283
Asbestos Individuals Certifications Approved 176
Asbestos Company Certifications 13
Asbestos Alternate Work Practices Approved 4
Lead-Based Paint (LBP) Inspections 2
LBP Notification Forms Approved 9
LBP Telephone Calls 55
LBP Letters Prepared and Mailed 3
LBP Courses Reviewed/Approved 0
LBP Course Audits 1
LBP Individual Certifications Approved 36
LBP Firm Certifications 9
DAQA-141-24
Page 2

Notices of Violation Sent 0
Compliance Advisories Sent 10
Warning Letters Sent 7
Settlement Agreements Finalized 1
Penalties Agreed to:
Pride Excavation/Travis Jessop 450.00

195 North 1950 West • Salt Lake City, Utah
Mailing Address: P.O. Box 144820 • Salt Lake City, Utah 84114-4820
Telephone [phone] • Fax [phone] • T.D.D [phone]
www.deq.utah.gov
Printed on 100% recycled paper
State of Utah

SPENCER J. COX
Governor

DEIDRE HENDERSON
Lieutenant Governor
Department of
Environmental Quality

Kimberly D. Shelley
Executive Director

DIVISION OF AIR QUALITY
Bryce C. Bird
Director

DAQA-222-24

M E M O R A N D U M

TO: Air Quality Board

FROM: Bryce C. Bird, Executive Secretary

DATE: March 3, 2024

SUBJECT: Air Toxics, Lead-Based Paint, and Asbestos (ATLAS) Section Compliance Activities –
March 2024
______________________________________________________________________________________

Asbestos Demolition/Renovation NESHAP Inspections 24
Asbestos AHERA Inspections 27
Asbestos State Rules Only Inspections 5
Asbestos Notification Forms Accepted 141
Asbestos Telephone Calls 292
Asbestos Individuals Certifications Approved 75
Asbestos Company Certifications 9
Asbestos Alternate Work Practices Approved 3
Lead-Based Paint (LBP) Inspections 0
LBP Notification Forms Approved 0
LBP Telephone Calls 62
LBP Letters Prepared and Mailed 25
LBP Courses Reviewed/Approved 0
LBP Course Audits 0
LBP Individual Certifications Approved 20
LBP Firm Certifications 13
DAQA-222-24
Page 2

Notices of Violation Sent 0
Compliance Advisories Sent 11
Warning Letters Sent 5
Settlement Agreements Finalized 1
Penalties Agreed to:
A-1 Abatement/Tyler Crook $225.00

Compliance

195 North 1950 West • Salt Lake City, UT
Mailing Address: P.O. Box 144820 • Salt Lake City, UT 84114-4820
Telephone [phone] • Fax [phone] • T.D.D. [phone]
www.deq.utah.gov
Printed on 100% recycled paper
State of Utah

Department of
Environmental Quality

Kimberly D. Shelley
Executive Director

DIVISION OF AIR QUALITY
Bryce C. Bird
Director

SPENCER J. COX
Governor

DEIDRE HENDERSON
Lieutenant Governor
DAQC-108-24

M E M O R A N D U M

TO: Air Quality Board

FROM: Bryce C. Bird, Executive Secretary

DATE: February 6, 2024

SUBJECT: Compliance Activities – January 2024
_____________________________________________________________________________________

ACTIVITIES:
Activity Monthly Total 36-Month Average
Inspections 64 59
On-Site Stack Test & CEM Audits 0 5
Stack Test & RATA Report Reviews 41 35
Emission Report Reviews 25 16
Temporary Relocation Request Reviews 5 6
Fugitive Dust Control Plan Reviews 106 130
Soil Remediation Report Reviews 2 1
Open Burn Permits Issued 0 418
Miscellaneous Inspections1 16 17
Complaints Received 12 15
Wood Burning Complaints Received 10 2
Breakdown Reports Received 2 1
Compliance Actions Resulting from a Breakdown 0 0
VOC Inspections (Gas station vapor recovery) 0 0
Warning Letters Issued 4 2
Notices of Violation Issued 0 0
Compliance Advisories Issued 1 5
No Further Action Letters Issued 8 2
Settlement Agreements Reached 3 2
Penalties Assessed $1,525.00 $125,943.82
1Miscellaneous inspections include, e.g., surveillance, complaint, on-site training, dust patrol, smoke patrol, open
burning, etc.
DAQC-108-24
Page 2

SETTLEMENT AGREEMENTS:
Party Amount
Maverik Inc. $583.00
Cintas Corporation $471.00
Kilgore - Westroc $471.00

UNRESOLVED NOTICES OF VIOLATION:
Party Date Issued
Citation Oil and Gas (in administrative litigation) 01/15/2020
Ovintiv Production Inc. 07/14/2020
Uinta Wax Operating (formerly CH4 Finley) 07/24/2020
Finley Resources 09/15/2022
Holcim 12/19/2023

195 North 1950 West • Salt Lake City, Utah
Mailing Address: P.O. Box 144820 • Salt Lake City, Utah 84114-4820
Telephone [phone] • Fax [phone] • T.D.D. [phone]
www.deq.utah.gov
Printed on 100% recycled paper
State of Utah

Department of
Environmental Quality

Kimberly D. Shelley
Executive Director

DIVISION OF AIR QUALITY
Bryce C. Bird
Director

SPENCER J. COX
Governor

DEIDRE HENDERSON
Lieutenant Governor
DAQC-223-24

M E M O R A N D U M

TO: Air Quality Board

FROM: Bryce C. Bird, Executive Secretary

DATE: March 7, 2024

SUBJECT: Compliance Activities – February 2024
_____________________________________________________________________________________

ACTIVITIES:
Activity Monthly Total 36-Month Average
Inspections 52 59
On-Site Stack Test & CEM Audits 0 4
Stack Test & RATA Report Reviews 49 35
Emission Report Reviews 28 16
Temporary Relocation Request Reviews 3 6
Fugitive Dust Control Plan Reviews 114 129
Soil Remediation Report Reviews 3 1
Open Burn Permits Issued 0 418
Miscellaneous Inspections1 17 18
Complaints Received 15 15
Wood Burning Complaints Received 3 3
Breakdown Reports Received 0 1
Compliance Actions Resulting from a Breakdown 0 0
VOC Inspections (Gas station vapor recovery) 0 0
Warning Letters Issued 0 2
Notices of Violation Issued 0 0
Compliance Advisories Issued 3 5
No Further Action Letters Issued 1 2
Settlement Agreements Reached 2 2
Penalties Assessed $4,596 $125,958.40
1Miscellaneous inspections include, e.g., surveillance, complaint, on-site training, dust patrol, smoke patrol, open
burning, etc.

DAQC-223-24
Page 2

SETTLEMENT AGREEMENTS:
Party Amount
Kilgore – Benjamin Pit $471
Price River Energy – Gordon Creek Compressor Station $4,125

UNRESOLVED NOTICES OF VIOLATION:
Party Date Issued
Citation Oil and Gas (in administrative litigation) 01/15/2020
Ovintiv Production Inc. 07/14/2020
Uinta Wax Operating (formerly CH4 Finley) (2) 07/24/2020
Finley Resources (2) 09/15/2022
Holcim 12/19/2023

195 North 1950 West • Salt Lake City, Utah
Mailing Address: P.O. Box 144820 • Salt Lake City, Utah 84114-4820
Telephone [phone] • Fax [phone] • T.D.D. [phone]
www.deq.utah.gov
Printed on 100% recycled paper
State of Utah

Department of
Environmental Quality

Kimberly D. Shelley
Executive Director

DIVISION OF AIR QUALITY
Bryce C. Bird
Director

SPENCER J. COX
Governor

DEIDRE HENDERSON
Lieutenant Governor
DAQC-318-24

M E M O R A N D U M

TO: Air Quality Board

FROM: Bryce C. Bird, Executive Secretary

DATE: April 5, 2024

SUBJECT: Compliance Activities – March 2024
_____________________________________________________________________________________

ACTIVITIES:
Activity Monthly Total 36-Month Average
Inspections 63 60
On-Site Stack Test & CEM Audits 7 4
Stack Test & RATA Report Reviews 22 35
Emission Report Reviews 19 16
Temporary Relocation Request Reviews 6 6
Fugitive Dust Control Plan Reviews 131 129
Soil Remediation Report Reviews 3 1
Open Burn Permits Issued 769 418
Miscellaneous Inspections1 17 17
Complaints Received 35 15
Wood Burning Complaints Received 0 3
Breakdown Reports Received 1 1
Compliance Actions Resulting from a Breakdown 0 0
VOC Inspections (Gas station vapor recovery) 0 0
Warning Letters Issued 0 2
Notices of Violation Issued 2 0
Compliance Advisories Issued 4 5
No Further Action Letters Issued 3 2
Settlement Agreements Reached 1 2
Penalties Assessed $18,965.00 $120,286.04
1Miscellaneous inspections include, e.g., surveillance, complaint, on-site training, dust patrol, smoke patrol, open
burning, etc.

DAQC-318-24
Page 2

SETTLEMENT AGREEMENTS:
Party Amount
Water Disposal Inc. $18,965.00

UNRESOLVED NOTICES OF VIOLATION:
Party Date Issued
Citation Oil and Gas (in administrative litigation) 01/15/2020
Ovintiv Production Inc. 07/14/2020
Uinta Wax Operating (formerly CH4 Finley) (2) 07/24/2020
Finley Resources (2) 09/15/2022
Holcim (US) Inc. 12/19/2023
Holcim (US) Inc. 03/01/2024
Holcim (US) Inc. 03/27/2024

Air Monitoring
Utah Division of Air Quality
0
10
20
30
40
50
60
70
80
90
100
12345678910111213141516171819202122232425262728293031
PM
2.
5
(µ
g
/
m
3)
Days
Utah 24-Hr PM2.5 Data February 2024
Bountiful Copperview Erda Harrisville
Hawthorne Lindon Near Road Roosevelt
Rose Park Smithfield Spanish Fork Environmental Quality
Vernal 24-hr Exceedence Value is 35 µg/m3
Exceedence Value is 35 µg/m3
*Environmental Quality (EQ) previously named Technical Support Center (TSC)
*
BV CV ED HV HW LN NR RS RP SM SF EQ V4
Arith Mean 3523445446443
Max 24-hr Avg 71056891111919888
98th percentile 610468899816777
Days of Data 29 29 29 29 29 29 29 29 29 29 29 29 29
Days >35 µg/m30000000000000
Utah Division of Air Quality
0
10
20
30
40
50
60
70
80
90
100
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
PM
2.
5
(µ
g
/
m
3)
Days
Utah 24-Hr PM2.5 Data March 2024
Bountiful Copperview Erda
Harrisville Hawthorne Lindon
Near Road Roosevelt Rose Park
Smithfield Spanish Fork Environmental Quality
Vernal 24-hr Exceedence Value is 35 µg/m3
Exceedence Value is 35 µg/m3
*EnvironmentalQuality (EQ) previously named Technical Support Center (TSC)
*
BV CV ED HV HW LN NR RS RP SM SF EQ V4
Arith Mean 4632536353453
Max 24-hr Avg 21 47 11 13 29 7 33 6 30 10 7 25 5
98th percentile 16 29 10 11 19 6 22 6 22 9 7 19 5
Days of Data 31 31 31 31 31 20 31 31 31 31 31 31 31
Days >35 µg/m30100000000000
Utah Division of Air Quality
0
10
20
30
40
50
60
70
80
90
100
12345678910111213141516171819202122232425262728293031
PM
2.
5
(µ
g
/
m
3)
Days
Utah 24-Hr PM2.5 Data April 2024
Bountiful Copperview Erda
Harrisville Hawthorne Lindon
Near Road Roosevelt Rose Park
Smithfield Spanish Fork Environmental Quality
Vernal 24-hr Exceedence Value is 35 µg/m3
Exceedence Value is 35 µg/m3
*Environmental Quality (EQ) previously named Technical Support Center (TSC)
*
BV CV ED HV HW LN NR RS RP SM SF EQ V4
Arith Mean 4633546456354
Max 24-hr Avg 7107 7 9 810710197115
98th percentile 71077889710176105
Days of Data 11 11 11 11 11 11 11 11 11 11 11 11 11
Days >35 µg/m30000000000000
Utah Division of Air Quality
0
50
100
150
200
250
300
350
400
12345678910111213141516171819202122232425262728293031
PM
10
(µ
g
/
m
3)
Days
Utah 24-hr PM10 Data February 2024
Harrisville Hawthorne Herriman #3 Lindon Roosevelt Environmental Quality 24-hr Exceedance Value is 150 ug/m3
Exceedance Value is 150 ug/m3
*
*Environmental Quality (EQ) previously named Technical Support Center (TSC)
HV HW H3 LN RS EQ
Arith Mean 610615715
Max 24-hr Avg 25 26 22 39 21 57
Days of Data 29 29 29 29 28 29
Days >150 µg/m 3 000000
Utah Division of Air Quality
0
50
100
150
200
250
300
350
400
12345678910111213141516171819202122232425262728293031
PM
10
(µ
g
/
m
3)
Days
Utah 24-hr PM10 Data March 2024
Harrisville Hawthorne Herriman #3 Lindon Roosevelt Environmental Quality 24-hr Exceedance Value is 150 ug/m3
Exceedance Value is 150 ug/m3
*
*Environmental Quality (EQ) previously named Technical Support Center (TSC)
HV HW H3 LN RS EQ
Arith Mean 14 12 10 19 6 19
Max 24-hr Avg 143 89 26 113 20 165
Days of Data 31 29 28 30 31 29
Days >150 µg/m 3 000001
Utah Division of Air Quality
0
50
100
150
200
250
300
350
400
1 2 3 4 5 6 7 8 9 10111213141516171819202122232425262728293031
PM
10
(µ
g
/
m
3)
Days
Utah 24-hr PM10 Data April 2024
Harrisville Hawthorne Herriman #3 Lindon Roosevelt Environmental Quality 24-hr Exceedance Value is 150 ug/m3
Exceedance Value is 150 ug/m3
*
*Environmental Quality (EQ) previously named Technical Support Center (TSC)
HV HW H3 LN RS EQ
Arith Mean 8 1314192619
Max 24-hr Avg 21 25 27 28 86 45
Days of Data 11 11 11 10 9 11
Days >150 µg/m 3 000000
15.2
8.3
6.1
8.8
9.0
11.1
5.9
6.8
3.7 3.1
4.7
9.2
10.3
10.7
9.6
7.5
9.7
9.9
14.8
10.8
8.3
9.6
11.0
14.7
17.2
14.8
1.3
12.1
15.7
-5.0
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
0
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.1
0.11
0.12
12345678910111213141516171819202122232425262728293031
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Days
Highest 8-hr Ozone Concentration & Daily Maximum Temperature February 2024
Bountiful Copperview Erda Herriman #3 Harrisville Hawthorne Near Road Rose Park Environmental Quality Exceed.TM
*
*Environmental Quality (EQ) previously named Technical Support Center (TSC)
** Controlling Monitor
**
BV CV ED H3 HV HW NR RP EQ
Arith Mean .036 .038 .040 .040 .038 .036 .033 .036 .028
8 -hr. Ozone 4th Max .042 .043 .044 .044 .043 .042 .039 .042 .032
Days of Data 29 29 29 29 29 29 29 29 29
Days > 0.070 0 000 0 0000
8.9
7.9
7.3
5.9 4.5
6.6
5.4
5.8
4.4
1.1
1.8
2.3
6.3
8.5
8.3
8.3
2.3
2.5
7.2
3.8
7.7 9.6 8.9
10.5
14.7
13.7
5.1 5.7
10.5
-10.0
-5.0
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
0
0.02
0.04
0.06
0.08
0.1
0.12
12345678910111213141516171819202122232425262728293031
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Days
Highest 8-hr Ozone Concentration & Daily Maximum Temperature February 2024
Price #2 Roosevelt Vernal #4 Exceed.TM
P2 RS V4
Arith Mean .037 .038 .033
8 -hr. Ozone 4th Max .043 .044 .039
Days of Data 29 29 29
Days > 0.070 000
3.5
4.9
4.1 5.13.2
7.0
2.6
2.9
-0.1 0.4 0.2
3.9
5.7
6.8
4.8
3.6
1.8
2.1
2.4
5.2
2.3
3.8
2.2
6.5
11.2 9.3
-0.1
4.9
10.3
-15.0
-10.0
-5.0
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
0
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.1
0.11
0.12
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
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Days
Highest 8-hr Ozone Concentration & Daily Maximum Temperature February 2024
Smithfield Exceed.TM
SM
Arith Mean .038
8 -hr. Ozone 4th Max .043
Days of Data 29
Days > 0.070 0
14.3
6.7
5.9
7.1
7.2
10.3
5.7
7.3
4.0
2.9
3.9
6.4
12.0 10.5
7.8
7.1
6.8
9.2
13.2
8.7 7.7 7.9
9.6
12.8
15.5
13.3
1.2
9.0
14.5
-10.0
-5.0
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
0
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.1
12345678910111213141516171819202122232425262728293031
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Days
Highest 8-hr Ozone Concentration & Daily Maximum Temperature February 2024
Lindon Spanish Fork Exceed.TM
LN SF
Arith Mean .039 .038
8 -hr. Ozone 4th Max .042 .042
Days of Data 29 29
Days > 0.070 00
7.6
10.4
10.0
16.313.6
6.9
6.6
6.7 6.3 9.2
12.1
14.8
13.8
14.5 15.6
14.4
17.6
18.3
13.712.2
14.6 17.0 18.2
18.4
17.0
16.1
16.6
17.1
-10.0
-5.0
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
65.0
0
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.1
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
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Days
Highest 8-hr Ozone Concentration & Daily Maximum Temperature February 2024
Enoch Hurricane Moab Exceed.TM
EN HC M7
Arith Mean .040 .039 .041
8 -hr. Ozone 4th Max .045 .043 .044
Days of Data 28 29 29
Days > 0.070 000
15.2
8.3
6.1
8.8
9.0
11.1
5.9
6.8
3.7
3.1 4.7
9.2 10.3
10.7
9.6
7.5
9.7
9.9
14.8
10.8 8.3
9.6 11.0
14.7
17.2
14.8
1.3
12.1
15.7
-10.0
-5.0
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
65.0
0
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.1
12345678910111213141516171819202122232425262728293031
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Days
Highest 8-hr Ozone Concentration & Daily Maximum Temperature February 2024
Stations Monitoring the Inland Port Development
ZZ Lake Park Exceed.TM
*ZZ islocated at the New Utah State Prison (1480 North 8000 West, SLC).
This site was previously named IP
*
ZZ LP
Arith Mean .037 .036
8 -hr. Ozone 4th Max .042 .041
Days of Data 29 29
Days > 0.070 00
16.8
12.0
2.8
3.8
10.0
11.7
5.4
4.5
12.5
15.8
14.2
9.2
4.9
9.7
10.6
14.6
17.0
17.618.6 19.7
16.9
18.3
15.6
4.8
9.3 8.7
11.5
11.612.6
10.8
10.2
-5.0
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
0
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.1
0.11
0.12
1 2 3 4 5 6 7 8 9 10111213141516171819202122232425262728293031
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Days
Highest 8-hr Ozone Concentration & Daily Maximum Temperature March 2024
Bountiful Copperview Erda Herriman #3 Harrisville Hawthorne Near Road Rose Park Environmental Quality Exceed.TM
*
*EnvironmentalQuality (EQ) previously named Technical Support Center (TSC)
** Controlling Monitor
**
BV CV ED H3 HV HW NR RP EQ
Arith Mean .044 .045 .045 .041 .043 .042 .039 .043 .031
8 -hr. Ozone 4th Max .048 .049 .048 .045 .047 .047 .043 .047 .034
Days of Data 31 31 31 31 31 31 31 31 31
Days > 0.070 000000000
14.3
10.5
2.1
3.2
6.4
11.5
9.1 7.19.0
13.3
13.4
11.4
5.4
6.9 8.7
12.0 12.7
15.0
17.9
18.1 16.8
16.7
14.2
7.1 6.3 7.1
10.3
12.0
7.2
10.3 9.1
-10.0
-5.0
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
0
0.02
0.04
0.06
0.08
0.1
0.12
12345678910111213141516171819202122232425262728293031
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Days
Highest 8-hr Ozone Concentration & Daily Maximum Temperature March 2024
Price #2 Roosevelt Vernal #4 Exceed.TM
P2 RS V4
Arith Mean .043 .044 .041
8 -hr. Ozone 4th Max .048 .048 .048
Days of Data 31 31 31
Days > 0.070 000
11.3
9.6
0.5
0.0
3.4
7.0
3.3
2.5
6.4
12.7
11.4
5.4
3.3
8.7
12.3
12.9 14.5
17.0
16.7
17.7
14.5
16.5
14.3
6.9 7.1
4.4
8.8
6.5
9.3 9.6
6.3
-15.0
-10.0
-5.0
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
0
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.1
0.11
0.12
12345678910111213141516171819202122232425262728293031
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Days
Highest 8-hr Ozone Concentration & Daily Maximum Temperature March 2024
Smithfield Exceed.TM
SM
Arith Mean .042
8 -hr. Ozone 4th Max .045
Days of Data 31
Days > 0.070 0
15.5
10.3
0.6
4.3
9.0
11.8
7.6 4.9
11.0
14.9 13.3
8.4
4.5
8.3
12.5
15.1 16.2
17.1
17.8 18.8
16.7
18.9
13.6
6.8 7.7 6.5
10.4 10.3
11.2 11.3
8.9
-10.0
-5.0
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
0
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.1
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
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Days
Highest 8-hr Ozone Concentration & Daily Maximum Temperature March 2024
Lindon Spanish Fork Exceed.TM
LN SF
Arith Mean .045 .043
8 -hr. Ozone 4th Max .048 .046
Days of Data 31 31
Days > 0.070 00
15.2
13.3
14.2
15.5
16.6
14.6
11.4
16.6
18.8
18.3
13.811.6 11.2
10.4
13.0
15.7
19.5
20.2
21.6
22.5 21.1
19.5
11.8
13.6 14.4 16.4
20.2 18.8
16.2
11.2
-10.0
-5.0
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
65.0
0
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.1
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
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Days
Highest 8-hr Ozone Concentration & Daily Maximum Temperature March 2024
Enoch Hurricane Moab Exceed.TM
EN HC M7
Arith Mean .044 .045 .044
8 -hr. Ozone 4th Max .048 .049 .050
Days of Data 31 31 31
Days > 0.070 000
16.8
12.0
2.8 3.8
10.0
11.7
5.4 4.5
12.5 15.8
14.2
9.2
4.9
9.7 10.6
14.6
17.0
17.6 18.6
19.7 16.9
18.3
15.6
4.8
9.3
8.7
11.5 11.6 12.6 10.8 10.2
-10.0
-5.0
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
65.0
0
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.1
12345678910111213141516171819202122232425262728293031
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Days
Highest 8-hr Ozone Concentration & Daily Maximum Temperature March 2024
Stations Monitoring the Inland Port Development
ZZ Lake Park Exceed.TM
*ZZ is located at the New Utah State Prison (1480 North 8000 West, SLC).
This site was previously named IP
*
ZZ LP
Arith Mean .043 .042
8 -hr. Ozone 4th Max .046 .045
Days of Data 31 31
Days > 0.070 00
9.6
15.5
20.8
22.0
16.2
5.3 9.2
10.3
13.7
16.7
23.3
-5.0
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
0
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.1
0.11
0.12
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
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Highest 8-hr Ozone Concentration & Daily Maximum Temperature April 2024
Bountiful Copperview Erda Herriman #3 Harrisville Hawthorne Near Road Rose Park Environmental Quality Exceed.TM
*
*EnvironmentalQuality (EQ) previously named Technical Support Center (TSC)
** Controlling Monitor
**
BV CV ED H3 HV HW NR RP EQ
Arith Mean .047 .048 .048 .042 .046 .046 .044 .047 .033
8 -hr. Ozone 4th Max .051 .049 .050 .042 .049 .048 .045 .049 .034
Days of Data 11 11 11 11 11 11 11 11 11
Days > 0.070 0 000 0 0000
11.2
15.2
18.9
20.3
16.8
7.4
8.2
10.8
14.9
18.4
19.3
-10.0
-5.0
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
0
0.02
0.04
0.06
0.08
0.1
0.12
12345678910111213141516171819202122232425262728293031
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Days
Highest 8-hr Ozone Concentration & Daily Maximum Temperature April 2024
Price #2 Roosevelt Vernal #4 Exceed.TM
P2 RS V4
Arith Mean .054 .051 .048
8 -hr. Ozone 4th Max .055 .051 .050
Days of Data 11 11 11
Days > 0.070 000
8.9
13.5
17.4 18.6
13.9
4.3
4.4
8.9
11.3
14.8
18.2
-15.0
-10.0
-5.0
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
0
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.1
0.11
0.12
1 2 3 4 5 6 7 8 9 10111213141516171819202122232425262728293031
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Days
Highest 8-hr Ozone Concentration & Daily Maximum Temperature April 2024
Smithfield Exceed.TM
SM
Arith Mean .042
8 -hr. Ozone 4th Max .043
Days of Data 11
Days > 0.070 0
8.4
14.6
19.7
22.4
14.8
4.6
8.3
10.4
12.4
16.3
21.4
-10.0
-5.0
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
0
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.1
12345678910111213141516171819202122232425262728293031
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Days
Highest 8-hr Ozone Concentration & Daily Maximum Temperature April 2024
Lindon Spanish Fork Exceed.TM
LN SF
Arith Mean .048 .047
8 -hr. Ozone 4th Max .049 .048
Days of Data 11 11
Days > 0.070 00
19.7
22.0
23.0
14.812.3
15.5 16.0
20.1
23.6 26.9
-10.0
-5.0
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
65.0
0
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.1
12345678910111213141516171819202122232425262728293031
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Days
Highest 8-hr Ozone Concentration & Daily Maximum Temperature April 2024
Enoch Hurricane Moab Exceed.TM
EN HC M7
Arith Mean .047 .047 .051
8 -hr. Ozone 4th Max .047 .049 .052
Days of Data 11 9 11
Days > 0.070 000
9.6
15.5
20.8
22.0
16.2
5.3
9.2
10.3
13.7 16.7
23.3
-10.0
-5.0
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
65.0
0
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.1
12345678910111213141516171819202122232425262728293031
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Days
Highest 8-hr Ozone Concentration & Daily Maximum Temperature April 2024
Stations Monitoring the Inland Port Development
ZZ Lake Park Exceed.TM
*ZZ islocated at the New Utah State Prison (1480 North 8000 West, SLC).
This site was previously named IP
*
ZZ LP
Arith Mean .046 .045
8 -hr. Ozone 4th Max .047 .046
Days of Data 11 11
Days > 0.070 00