DAQ-2024-009069

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-062-24
UTAH AIR QUALITY BOARD MEETING
TENTATIVE AGENDA
Wednesday, August 7, 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: September 4, 2024
III.Approval of the Minutes for the July 9, 2024, Board Meeting.
IV.Propose for Public Comment: Amend R307-101. General Requirements; including R307-101-3.
Version of Code of Federal Regulations Incorporated by Reference. Presented by Erica Pryor.
V.Informational Items.
A.Standards of Performance for New, Reconstructed, and Modified Sources and Emissions
Guidelines for Existing Sources: Oil and Natural Gas Sector Climate Review rules
(commonly known as OOOOb and OOOOc). Presented by Sheila Vance.
B.Air Toxics. Presented by Leonard Wright.
C.Compliance. Presented by Harold Burge, Rik Ombach, and Chad Gilgen.
D.Monitoring. Presented by Bo Call.
E.Other Items to be Brought Before the Board.
F.Board Meeting Follow-up Items.
VI.Adjourn Meeting
Board member tour of NOAA/CLS plane and mobile lab for ozone summer study.
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, 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
DAQ-061-24

M E M O R A N D U M

TO: Air Quality Board

THROUGH: Bryce C. Bird, Executive Secretary

FROM: Erica Pryor, Rules Coordinator

DATE: July 25, 2024

SUBJECT: PROPOSE FOR PUBLIC COMMENT: Amend R307-101. General Requirements;
including R307-101-3. Version of Code of Federal Regulations Incorporated by Reference.
______________________________________________________________________________________

R307-101-3, Version of Code of Federal Regulations Incorporated by Reference, must be updated
periodically to reflect changes to the federal air quality regulations as published in Title 40 of the Code of
Federal Regulations (40 CFR). All published changes to 40 CFR that are relevant to the Utah Air Quality
Rules from July 1, 2020, to July 1, 2024, are listed in the attached documents including:

• Summary of incorporations through R307-101-3
• Summary of relevant 40 CFR Part 63 Updates for incorporation through R307-214
• Summary of relevant 40 CFR Part 60 Updates for incorporation through R307-210

R307-101-3 has been amended to identify the most recent version of 40 CFR, July 1, 2024, as the version
that is incorporated throughout the Utah Air Quality Rules.

Additionally, it is important to note that the Standards of Performance for New, Reconstructed, and
Modified Sources and Emissions Guidelines for Existing Sources: Oil and Natural Gas Sector Climate
Review rules (commonly known as OOOOb and OOOOc) were finalized March 8, 2024, and made
effective May 7, 2024. It is important to have these new standards referenced in the Utah Air Quality Rules
to have consistency with management of oil and natural gas sources by the state of Utah and the EPA.
Ensuring compliance with these new standards will help ensure continued air quality improvements in the
state and especially the Uinta Basin nonattainment area.

DAQ-061-24
Page 2

Finally, we are including additional necessary amendments to rule R307-101 to update certain definitions
as well as bring the rule into compliance with Executive Order 2021-12 requiring all departments to update
their respective rules to align with the state rule writing manual standards.

Recommendation: Staff recommend that the Board approve the amendments to R307-101 for a 30-day
public comment period.
State of Utah
Administrative Rule Analysis
Revised May 2024
NOTICE OF SUBSTANTIVE CHANGE
TYPE OF FILING: Amendment
Rule or Section Number: R307-101 Filing ID: Office Use Only
Date of Previous Publication (Only for CPRs): Click or tap to enter a date.
Agency Information
1. Title catchline:Division of Air Quality, Department of Environmental 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
Contact persons:
Name: Phone: Email:
Erica Pryor 385-499-3416 [e-mail]
Becky Close 801-536-4013 [e-mail]
Please address questions regarding information on this notice to the persons listed above.
General Information
2.Rule or section catchline:
R307-101. General Requirements
3. Purpose of the new rule or reason for the change:
There are several reasons why the Division of Air Quality is filing these amendments. First, R307-101-3. Version of Code of
Federal Regulations Incorporated by Reference, must reflect changes to the federal air quality regulations as published in Title
40 of the Code of Federal Regulations (40 CFR). The rule has been amended to identify the most recent version of 40 CFR,
July 1, 2024, as the version that is incorporated throughout the Utah Air Quality Rules. Second, the Division of Air Quality
needed to update attainment area definitions. Finally, the Division of Air Quality is filing this amendment to meet the
requirements of EO 2021-12 requiring all departments to align the rules with the state rule writing manual standards.
4. Summary of the new rule or change:
This filing amends Rule R307-101 to update definitions, update the CFR incorporations by reference date, and complies with
EO 2021-12.
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 there is no fiscal component related to the amendments. The
amendments relate to federal requirements that are already in place.
B) Local governments:
There are no anticipated costs or savings for local governments as there is no fiscal component related to the amendments. The
amendments relate to federal requirements that are already in place.
C) Small businesses ("small business" means a business employing 1-49 persons):
There are no anticipated costs or savings to small businesses as there is no fiscal component related to the amendments. The
amendments relate to federal requirements that are already in place.

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 as there is no fiscal component related to the amendments.
The amendments relate to federal requirements that are already in place.

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 than small businesses, non-small businesses, state, or local
government entities as there is no fiscal component related to the amendments. The amendments relate to federal requirements
that are already in place.

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 compliance costs for affected persons as there is no fiscal component related to the amendments. The
amendments relate to federal requirements that are already in place.

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 FY2025 FY2026 FY2027
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 FY2025 FY2026 FY2027
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 the Department 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:
Utah Code 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 or updates 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 or updates 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: 10/01/2024
B) A public hearing (optional) will be held:
Date (mm/dd/yyyy): Time (hh:mm AM/PM): Place (physical address or URL):
09/23/2024 11:30 AM R307-101 Public Hearing 11:30am-12:30pm

In Person:

MASOB, First Floor, Air Quality Board
Room 1015

Virtual:

Time zone: America/Denver

Google Meet joining info

Video call link: https://meet.google.com/tbk-
jpmf-omm

Or dial: 3344-255-774 1(US) + PIN: 809 797
665#

More phone numbers: https://tel.meet/tbk-
jpmf-omm?pin=7153943430951
To the agency: If more than one hearing will take place, continue to add rows.

9. This rule change MAY become effective on: 10/10/2024
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: 07/23/2024

R307. Environmental Quality, Air Quality. 1
R307-101. General Requirements. 2
R307-101-1. Foreword. 3
Chapter 19-2 and the rules adopted by the Air Quality Board constitute the basis for control of air 4
pollution sources in the state. These rules apply and [will]shall be enforced throughout the state[,] and are 5
recommended for adoption in local jurisdictions where environmental specialists are available to cooperate in 6
implementing rule requirements. 7
National Ambient Air Quality Standards (NAAQS), National Standards of Performance for New 8
Stationary Sources (NSPS), National Prevention of Significant Deterioration of Air Quality (PSD) standards, 9
and the National Emission Standards for Hazardous Air Pollutants (NESHAPS) apply throughout the nation 10
and are legally enforceable in Utah. 11
12
R307-101-2. Definitions. 13
Except where specified in individual rules, definitions in Section R307-101-2 are applicable to 14
[all]any rules adopted by the Air Quality Board. 15
"Actual Emissions" means the actual rate of emissions of a pollutant from an emissions unit 16
determined as follows: 17
(1) In general, actual emissions as of a particular date shall equal the average rate, in tons per year, at18
which the unit actually emitted the pollutant during a two-year period which precedes the particular date and 19
which is representative of normal source operations. The director shall allow the use of a different [time 20
]period upon a determination that it is more representative of normal source operation. Actual emissions 21
shall be calculated using the unit's actual operating hours, production rates, and types of materials processed, 22
stored, or combusted during the selected [time ]period. 23
(2) The director may presume that source-specific allowable emissions for the unit are equivalent to24
the actual emissions of the unit. 25
(3)For any emission unit, other than an electric utility steam generating unit specified in (4), which26
has not begun normal operations on the [particular ]date, actual emissions shall equal the potential to emit of 27
the unit on that date. 28
(4)For an electric utility steam generating unit, [(]other than a new unit or the replacement of an29
existing unit,[)] actual emissions of the unit following the physical or operational change shall equal the 30
representative actual annual emissions of the unit, provided the source owner or operator maintains and 31
submits to the director, on an annual basis for a period of [5]five years from the date the unit resumes regular 32
operation, information demonstrating that the physical or operational change did not result in an emissions 33
increase. A longer period, not to exceed [10]ten years, may be required by the director if the director 34
determines [such ]a period to be more representative of normal source post-change operations. 35
"Acute Hazardous Air Pollutant" means any noncarcinogenic hazardous air pollutant for which a 36
threshold limit value - ceiling (TLV-C) has been adopted by the American Conference of Governmental 37
Industrial Hygienists (ACGIH) in its "Threshold Limit Values for Chemical Substances and Physical Agents 38
and Biological Exposure Indices, (2009)." 39
"Air pollutant" means a substance that qualifies as an air pollutant as defined in 42 U.S.C. Sec. 7602. 40
"Air Pollutant Source" means private and public sources of emissions of air pollutants. 41
"Air Pollution" means the presence of an air pollutant in the ambient air in [such ]quantities and 42
duration and under conditions and circumstances, that are injurious to human health or welfare, animal or 43
plant life, or property, or would unreasonably interfere with the enjoyment of life or use of property as 44
determined by the standards, rules and regulations adopted by the Air Quality Board, [(]Section 19-2-104[)]. 45
"Allowable Emissions" means the emission rate of a source calculated using the maximum rated 46
capacity of the source, [(]unless the source is subject to enforceable limits which restrict the operating rate, or 47
hours of operation, or both[)], and the emission limitation established pursuant to Section R307-401-8. 48
"Ambient Air" means that portion of the atmosphere, external to buildings, to which the general 49
public has access. [(]See Section 19-2-102(4)[)]. 50
"Appropriate Authority" means the governing body of any city, town, or county. 51
"Atmosphere" means the air that envelops or surrounds the earth and includes [all]any space outside 52
of buildings, stacks, or exterior ducts. 53
"Authorized Local Authority" means:[ a city, county, city-county or district health department; a city, 54
Page 1 of 11
county or combination fire department; or other local agency duly designated by appropriate authority, with 1
approval of the state Department of Health; and other lawfully adopted ordinances, codes or regulations not 2
in conflict therewith.] 3
(a) city, county, city-county, or district health department; 4
(b) a city, county, or combination fire department; 5
(c) other local agency duly designated by appropriate authority, with approval of the state 6
Department of Health; or 7
(d) other lawfully adopted ordinances, codes or regulations not in conflict therewith. 8
"Board" means Air Quality Board. See Section 19-2-102(8)(a). 9
"Breakdown" means any malfunction or procedural error, to include [but not limited to ]any 10
malfunction or procedural error during start-up and shutdown, which will result in the inoperability or sudden 11
loss of performance of the control equipment or process equipment causing emissions in excess of those 12
allowed by approval order or Title R307. 13
"BTU" means British Thermal Unit, the quantity of heat necessary to raise the temperature of one 14
pound of water one degree Fahrenheit. 15
"Calibration Drift" means the change in the instrument meter readout over a stated period [of time ]of 16
normal continuous operation when the VOC concentration at the time of measurement is the same known 17
upscale value. 18
"Carbon Adsorption System" means a device containing adsorbent material [(e.g.,]including 19
activated carbon, aluminum, silica gel[)], an inlet and outlet for exhaust gases, and a system for the proper 20
disposal or reuse of [all]any VOC adsorbed. 21
"Carcinogenic Hazardous Air Pollutant" means any hazardous air pollutant that is classified as a 22
known human carcinogen (A1) or suspected human carcinogen (A2) by the American Conference of 23
Governmental Industrial Hygienists (ACGIH) in its "Threshold Limit Values for Chemical Substances and 24
Physical Agents and Biological Exposure Indices, (2009)." 25
"Chargeable Pollutant" means any regulated air pollutant except the following: 26
(1) carbon monoxide; 27
(2) any pollutant that is a regulated air pollutant solely because it is a Class I or II substance subject 28
to a standard promulgated or established by Title VI of the Act, Stratospheric Ozone Protection; or 29
(3) any pollutant that is a regulated air pollutant solely because it is subject to a standard or 30
regulation under Section 112(r) of the Act, Prevention of Accidental Releases. 31
"Chronic Hazardous Air Pollutant" means any noncarcinogenic hazardous air pollutant for which a 32
threshold limit value - time weighted average (TLV-TWA) having no threshold limit value - ceiling (TLV-C) 33
has been adopted by the American Conference of Governmental Industrial Hygienists (ACGIH) in its 34
"Threshold Limit Values for Chemical Substances and Physical Agents and Biological Exposure Indices, 35
(2009)." 36
"Clean Air Act" means federal Clean Air Act as found in 42 U.S.C. Chapter 85. 37
"Clean Coal Technology" means any technology, including technologies applied at the 38
precombustion, combustion, or post combustion stage, at a new or existing facility which will achieve 39
significant reductions in air emissions of sulfur dioxide or oxides of nitrogen associated with the utilization of 40
coal in the generation of electricity, or process steam which was not in widespread use as of November 15, 41
1990. 42
"Clean Coal Technology Demonstration Project" means a project using funds appropriated under the 43
heading "Department of Energy-Clean Coal Technology," up to a total amount of $2,500,000,000 for 44
commercial demonstration of clean coal technology, or similar projects funded through appropriations for the 45
Environmental Protection Agency. The Federal contribution for a qualifying project shall be at least 20 46
percent of the total cost of the demonstration project. 47
"Clearing Index" means an indicator of the predicted rate of clearance of ground level pollutants 48
from a given area. This number is provided by the National Weather Service. 49
"Coating" means a material that can be applied to a substrate and which cures to form a continuous 50
solid film for protective, decorative, or functional purposes. [Such m]Materials include[, but are not limited 51
to,] paints, varnishes, sealants, adhesives, caulks, maskants, inks, and temporary protective coatings. 52
"Commence" as applied to construction of a major source or major modification means that the 53
owner or operator has [all]any necessary pre-construction approvals or permits and either has: 54
Page 2 of 11
(1) begun, or caused to begin, a continuous program of actual on-site construction of the source, to 1
be completed within a reasonable time; or 2
(2) entered into binding agreements or contractual obligations, which cannot be canceled or 3
modified without substantial loss to the owner or operator, to undertake a program of actual construction of 4
the source to be completed within a reasonable time. 5
"Composite vapor pressure" means the sum of the partial pressures of the compounds defined as 6
VOCs. 7
"Condensable PM2.5" means material that is vapor phase at stack conditions, but which condenses 8
[and/]or reacts upon cooling and dilution in the ambient air to form solid or liquid particulate matter 9
immediately after discharge from the stack. 10
"Compliance Schedule" means a schedule of events, by date, which [will]shall result in compliance 11
with these regulations. 12
"Construction" means any physical change or change in the method of operation including 13
fabrication, erection, installation, demolition, or modification of a source which would result in a change in 14
actual emissions. 15
"Control Apparatus" means any device which prevents or controls the emission of any air pollutant 16
directly or indirectly into the outdoor atmosphere. 17
"Department" means Utah State Department of Environmental Quality. See Section 19-1-103(1). 18
"Director" means the Director of the Division of Air Quality. See Section 19-1-103(1). 19
"Division" means the Division of Air Quality. 20
"Electric Utility Steam Generating Unit" means any steam electric generating unit that is constructed 21
for the purpose of supplying more than one-third of its potential electric output capacity and more than 25 22
MW electrical output to any utility power distribution system for sale. Any steam supplied to a steam 23
distribution system for the purpose of providing steam to a steam-electric generator that would produce 24
electrical energy for sale is also considered in determining the electrical energy output capacity of the affected 25
facility. 26
"Emission" means the act of discharge into the atmosphere of an air pollutant or an effluent which 27
contains or may contain an air pollutant[;], or the effluent so discharged into the atmosphere. 28
"Emissions Information" means, with reference to any source operation, equipment, or control 29
apparatus: 30
(1) information necessary to determine the identity, amount, frequency, concentration, or other 31
characteristics related to air quality of any air pollutant which has been emitted by the source operation, 32
equipment, or control apparatus; 33
(2) information necessary to determine the identity, amount, frequency, concentration, or other 34
characteristics [(]to the extent related to air quality,[)] of any air pollutant which, under an applicable standard 35
or limitation, the source operation was authorized to emit [(]including, to the extent necessary for such 36
purposes, a description of the manner or rate of operation of the source operation[)], or any combination of 37
the foregoing; and 38
(3) [A]a general description of the location [and/]or nature of the source operation to the extent 39
necessary to identify the source operation and to distinguish it from other source operations [(]including, to 40
the extent necessary for such purposes, a description of the device, installation, or operation constituting the 41
source operation[)]. 42
"Emission Limitation" means a requirement established by the Board, the director or the 43
Administrator, EPA, which limits the quantity, rate or concentration of emission of air pollutants on a 44
continuous emission reduction including any requirement relating to the operation or maintenance of a source 45
to [assure]ensure continuous emission reduction. [(]See Section 302(k)[)]. 46
"Emissions Unit" means any part of a stationary source which emits or would have the potential to 47
emit any pollutant subject to regulation under the Clean Air Act. 48
"Enforceable" means [all]any limitations and conditions which are enforceable by the Administrator, 49
including those requirements developed pursuant to 40 CFR Parts 60 and 61, requirements within the State 50
Implementation Plan and Title R307, any permit requirements established pursuant to 40 CFR 52.21 or Rule 51
R307-401. 52
"EPA" means Environmental Protection Agency. 53
"EPA Method 9" means 40 CFR Part 60, Appendix A, Method 9, "Visual Determination of Opacity 54
Page 3 of 11
of Emissions from Stationary Sources," and Alternate 1, "Determination of the opacity of emissions from 1
stationary sources remotely by LIDAR." 2
"Executive Director" means the Executive Director of the Utah Department of Environmental 3
Quality. See Subsection 19-1-103(2). 4
"Existing Installation" means an installation, construction of which began [prior to]before the 5
effective date of any regulation having application to it. 6
"Filterable PM2.5" means particles with an aerodynamic diameter equal to or less than 2.5 7
micrometers that are directly emitted by a source as a solid or liquid at stack or release conditions and can be 8
captured on the filter of a stack test train. 9
"Fireplace" means [all]any devices both masonry or factory built units, [(]free standing fireplaces[)] 10
with a hearth, fire chamber or similarly prepared device connected to a chimney which provides the operator 11
with little control of combustion air, leaving its fire chamber fully or at least partially open to the room. 12
Fireplaces include those devices with circulating systems, heat exchangers, or draft reducing doors with a net 13
thermal efficiency of no greater than [twenty percent]20% and are used for aesthetic purposes. 14
"Fugitive Dust" means particulate, composed of soil, [and/or ]industrial particulates, or both [such 15
as]including ash, coal, and minerals[, etc.,] which becomes airborne because of wind or mechanical 16
disturbance of surfaces. Natural sources of dust and fugitive emissions are not fugitive dust within the 17
meaning of this definition. 18
"Fugitive Emissions" means emissions from an installation or facility which are neither passed 19
through an air cleaning device nor vented through a stack or could not reasonably pass through a stack, 20
chimney, vent, or other functionally equivalent opening. 21
"Garbage" means [all]any putrescible animal and vegetable matter resulting from the handling, 22
preparation, cooking and consumption of food, including wastes attendant thereto. 23
"Gasoline" means any petroleum distillate, used as a fuel for internal combustion engines, having a 24
Reid vapor pressure of [4]four pounds or greater. 25
"Hazardous Air Pollutant (HAP)" means any pollutant listed by the EPA as a hazardous air pollutant 26
in conformance with Section 112(b) of the Clean Air Act. A list of these pollutants is available at the 27
Division of Air Quality. 28
"Household Waste" means any solid or liquid material normally generated by the family in a 29
residence in the course of ordinary day-to-day living, including [but not limited to ]garbage, paper products, 30
rags, leaves, and garden trash. 31
"Incinerator" means a combustion apparatus designed for high temperature operation in which solid, 32
semisolid, liquid, or gaseous combustible wastes are ignited and burned efficiently and from which the solid 33
and gaseous residues contain little or no combustible material. 34
"Installation" means a discrete process with identifiable emissions which may be part of a larger 35
industrial plant. Pollution equipment [shall]may not be considered a separate installation or installations. 36
"LPG" means liquified petroleum gas [such as]including propane or butane. 37
"Maintenance Area" means an area that is subject to the provisions of a maintenance plan that is 38
included in the Utah state implementation plan, and that has been redesignated by EPA from nonattainment 39
to attainment of any National Ambient Air Quality Standard. 40
[ (a) The following areas are considered maintenance areas for ozone: 41
(i) Salt Lake County, effective August 18, 1997; and 42
(ii) Davis County, effective August 18, 1997.] 43
([b]a) [The following areas are]Provo City is considered a maintenance areas for carbon 44
monoxide[:] effective January 3, 2006 45
[ (i) Salt Lake City, effective March 22, 1999; 46
(ii) Ogden City, effective May 8, 2001; and 47
(iii) Provo City, effective January 3, 2006.] 48
([c]b) The following areas are considered maintenance areas for PM10: 49
(i) Salt Lake County, effective on the date that EPA approves the maintenance plan that was adopted 50
by the Board on December 2, 2015; 51
(ii) Utah County, effective on the date that EPA approves the maintenance plan that was adopted by 52
the Board on December 2, 2015; and 53
(iii) Ogden City, effective on the date that EPA approves the maintenance plan that was adopted by 54
Page 4 of 11
the Board on December 2, 2015. 1
([d]c) The following area is considered a maintenance area for sulfur dioxide: [all of ]Salt Lake 2
County and the eastern portion of Tooele County above 5600 feet, effective on the date that EPA approves 3
the maintenance plan that was adopted by the Board on January 5, 2005. 4
([e]d) The following areas are considered maintenance areas for PM2.5: 5
(i) the Salt Lake City, Utah 24-hr PM2.5 nonattainment area, as defined in the July 1, 2019 version 6
of 40 CFR 81.345, effective on the date that EPA redesignates the area to attainment for PM2.5; 7
(ii) the Provo, Utah 24-hr PM2.5 nonattainment area, as defined in the July 1, 2019 version of 40 8
CFR 81.345, effective on the date that EPA redesignates the area to attainment for PM2.5; and 9
(iii) the Utah portion of the Logan, Utah-Idaho 24-hr PM2.5 nonattainment area, as defined in the 10
July 1, 2019 version of 40 CFR 81.345, effective on the date that EPA redesignates the area to attainment 11
for PM2.5. 12
"Major Modification" means any physical change in or change in the method of operation of a major 13
source that would result in a significant net emissions increase of any pollutant. A net emissions increase that 14
is significant for volatile organic compounds shall be considered significant for ozone. Within Salt Lake and 15
Davis Counties or any nonattainment area for ozone, a net emissions increase that is significant for nitrogen 16
oxides shall be considered significant for ozone. Within areas of nonattainment for PM10, a significant net 17
emission increase for any PM10 precursor is also a significant net emission increase for PM10. A physical 18
change or change in the method of operation [shall]may not include: 19
(1) routine maintenance, repair, and replacement; 20
(2) use of an alternative fuel or raw material by reason of an order under section 2(a) and (b) of the 21
Energy Supply and Environmental Coordination Act of 1974, or by reason of a natural gas curtailment plan 22
pursuant to the Federal Power Act; 23
(3) use of an alternative fuel by reason of an order or rule under [s]Section 125 of the federal Clean 24
Air Act; 25
(4) use of an alternative fuel at a steam generating unit to the extent that the fuel is generated from 26
municipal solid waste; 27
(5) use of an alternative fuel or raw material by a source: 28
(a) which the source was capable of accommodating before January 6, 1975, unless such change 29
would be prohibited under any enforceable permit condition; or 30
(b) which the source is otherwise approved to use; 31
(6) an increase in the hours of operation or in the production rate unless [such]the change would be 32
prohibited under any enforceable permit condition; 33
(7) any change in ownership at a source; 34
(8) the addition, replacement, or use of a pollution control project at an existing electric utility steam 35
generating unit, unless the director determines that [such]the addition, replacement, or use renders the unit 36
less environmentally beneficial, or except: 37
(a) when the director has reason to believe that the pollution control project would result in a 38
significant net increase in representative actual annual emissions of any criteria pollutant over levels used for 39
that source in the most recent air quality impact analysis in the area conducted for the purpose of Title I of the 40
Clean Air Act, if any, and 41
(b) the director determines that the increase will cause or contribute to a violation of any national 42
ambient air quality standard or PSD increment, or visibility limitation[.]; 43
(9) the installation, operation, cessation, or removal of a temporary clean coal technology 44
demonstration project, provided that the project complies with: 45
(a) the Utah State Implementation Plan; and 46
(b) other requirements necessary to attain and maintain the national ambient air quality standards 47
during the project and after it is terminated. 48
"Major Source" means, to the extent provided by the federal Clean Air Act as applicable to Title 49
R307: 50
(1) any stationary source of air pollutants which emits, or has the potential to emit, [one hundred]100 51
tons per year or more of any pollutant subject to regulation under the Clean Air Act; or 52
(a) any source located in a nonattainment area for carbon monoxide which emits, or has the potential 53
to emit, carbon monoxide in the amounts outlined in Section 187 of the federal Clean Air Act with respect to 54
Page 5 of 11
the severity of the nonattainment area as outlined in Section 187 of the federal Clean Air Act;[ or] 1
(b) any source located in Salt Lake or Davis Counties or in a nonattainment area for ozone which 2
emits, or has the potential to emit, VOC or nitrogen oxides in the amounts outlined in Section 182 of the 3
federal Clean Air Act with respect to the severity of the nonattainment area as outlined in Section 182 of the 4
federal Clean Air Act; or 5
(c) any source located in a nonattainment area for PM10 which emits, or has the potential to emit, 6
PM10 or any PM10 precursor in the amounts outlined in Section 189 of the federal Clean Air Act with 7
respect to the severity of the nonattainment area as outlined in Section 189 of the federal Clean Air Act. 8
(2) any physical change that would occur at a source not qualifying under [subpart] (1) as a major 9
source, if the change would constitute a major source by itself; 10
(3) the fugitive emissions and fugitive dust of a stationary source [shall]may not be included in 11
determining for any of the purposes of [these]Title R307 rules whether it is a major stationary source, unless 12
the source belongs to one of the following categories of stationary sources: 13
(a) [C]coal cleaning plants [(]with thermal dryers[)]; 14
(b) Kraft pulp mills; 15
(c) Portland cement plants; 16
(d) [P]primary zinc smelters; 17
(e) [I]iron and steel mills; 18
(f) [P]primary aluminum or reduction plants; 19
(g) [P]primary copper smelters; 20
(h) [M]municipal incinerators capable of charging more than 250 tons of refuse per day; 21
(i) [H]hydrofluoric, sulfuric, or nitric acid plants; 22
(j) [P]petroleum refineries; 23
(k) [L]lime plants; 24
(l) [P]phosphate rock processing plants; 25
(m) [C]coke oven batteries; 26
(n) [S]sulfur recovery plants; 27
(o) [C]carbon black plants or [(]furnace process[)]; 28
(p) [P]primary lead smelters; 29
(q) [F]fuel conversion plants; 30
(r) [S]sintering plants; 31
(s) [S]secondary metal production plants; 32
(t) [C]chemical process plants; 33
(u) [F]fossil-fuel boilers, [(]or combination thereof,[)] totaling more than 250 million British 34
Thermal Units per hour heat input; 35
(v) [P]petroleum storage and transfer units with a total storage capacity exceeding 300,000 barrels; 36
(w) [T]taconite ore processing plants; 37
(x) [G]glass fiber processing plants; 38
(y) [C]charcoal production plants; 39
(z) [F]fossil fuel-fired steam electric plants of more than 250 million British Thermal Units per hour 40
heat input; or 41
(aa) [A]any other stationary source category which, as of August 7, 1980, is being regulated under 42
[s]Section 111 or 112 of the federal Clean Air Act. 43
"Modification" means any planned change in a source which results in a potential increase of 44
emission. 45
"National Ambient Air Quality Standards (NAAQS)" means the allowable concentrations of air 46
pollutants in the ambient air specified by the Federal Government, [(]see Title 40, Code of Federal 47
Regulations, Part 50[)]. 48
"Net Emissions Increase" means the amount by which the sum of the following exceeds zero: 49
(1) any increase in actual emissions from a particular physical change or change in method of 50
operation at a source; and 51
(2) any other increases and decreases in actual emissions at the source that are contemporaneous 52
with the particular change and are otherwise creditable. For purposes of determining a "net emissions 53
increase": 54
Page 6 of 11
(a) [A]an increase or decrease in actual emissions is contemporaneous with the increase from the 1
particular change only if it occurs between the date five years before construction on the particular change 2
commences; and the date that the increase from the particular change occurs[.]; 3
(b) An increase or decrease in actual emissions is creditable only if it has not been relied on in 4
issuing a prior approval for the source which approval is in effect when the increase in actual emissions for 5
the particular change occurs[.]; 6
(c) An increase or decrease in actual emission of sulfur dioxide, nitrogen oxides or particulate matter 7
which occurs before an applicable minor source baseline date is creditable only if it is required to be 8
considered in calculating the amount of maximum allowable increases remaining available[.] and [ W]with 9
respect to particulate matter, only PM10 emissions will be used to evaluate this increase or decrease[.]; 10
(d) [A]an increase in actual emissions is creditable only to the extent that the new level of actual 11
emissions exceeds the old level. 12
(e) [A]a decrease in actual emissions is creditable only to the extent that: 13
(i) [T]the old level of actual emissions or the old level of allowable emissions, whichever is lower, 14
exceeds the new level of actual emissions; 15
(ii) [I]it is enforceable at and after the time that actual construction on the particular change begins;[ 16
and] 17
(iii) [I]it has approximately the same qualitative significance for public health and welfare as that 18
attributed to the increase from the particular change[.]; and 19
(iv) [I]it has not been relied on in issuing any permit under R307-401 nor has it been relied on in 20
demonstrating attainment or reasonable further progress. 21
(f) [A]an increase that results from a physical change at a source occurs when the emissions unit on 22
which construction occurred becomes operational and begins to emit a particular pollutant[. ]and [A]any 23
replacement unit that requires shakedown becomes operational only after a reasonable shakedown period, not 24
to exceed 180 days. 25
"New Installation" means an installation, construction of which began after the effective date of any 26
regulation having application to it. 27
"Nonattainment Area" means an area designated by the Environmental Protection Agency as 28
nonattainment under Section 107, Clean Air Act for any National Ambient Air Quality Standard. The 29
designations for Utah are listed in 40 CFR 81.345. 30
"Offset" means an amount of emission reduction, by a source, greater than the emission limitation 31
imposed on [such]the source by these regulations, [and/or ]the State Implementation Plan, or both. 32
"Opacity" means the capacity to obstruct the transmission of light, expressed as percent. 33
"Open Burning" means any burning of combustible materials resulting in emission of products of 34
combustion into ambient air without passage through a chimney or stack. 35
"Owner or Operator" means any person who owns, leases, controls, operates or supervises a facility, 36
an emission source, or air pollution control equipment. 37
"PSD["] Area” means an area designated as attainment or unclassifiable under [s]Section 38
107(d)(1)(D) or (E) of the federal Clean Air Act. 39
"PM2.5" means particulate matter with an aerodynamic diameter less than or equal to a nominal 2.5 40
micrometers as measured by an EPA reference or equivalent method. 41
"PM2.5 Precursor" means any chemical compound or substance which, after it has been emitted into 42
the atmosphere, undergoes chemical or physical changes that convert it into particulate matter, specifically 43
PM2.5. 44
(1) Specifically, Sulfur dioxide, Nitrogen oxides, Volatile organic compounds and Ammonia are 45
precursors to PM2.5 in any PM2.5 nonattainment area, except where the Administrator of the EPA has 46
approved a demonstration satisfying 40 CFR 51.1006(a)(3) which has, for a particular PM2.5 nonattainment 47
area, determined otherwise. 48
(2) The following subparagraphs denote specific nonattainment areas, [(]as defined in the July 1, 49
2017 version of 40 CFR 81.345[)], within which certain pollutants identified in paragraph (1) are exempted 50
from the definition of PM2.5 precursor for the purposes of 40 CFR 51.165 51
(a) In the Logan UT-ID PM2.5 nonattainment area, [- ]Ammonia is exempted. 52
"PM10" means particulate matter with an aerodynamic diameter less than or equal to a nominal 53
[10]ten micrometers as measured by an EPA reference or equivalent method. 54
Page 7 of 11
"PM10 Precursor" means any chemical compound or substance which, after it has been emitted into 1
the atmosphere, undergoes chemical or physical changes that convert it into particulate matter, specifically 2
PM10. 3
"Part 70 Source" means any source subject to the permitting requirements of Rule R307-415. 4
"Person" means an individual, trust, firm, estate, company, corporation, partnership, association, 5
state, state or federal agency or entity, municipality, commission, or political subdivision of a state. [(]See 6
Subsection 19-2-103(4)[)]. 7
"Pollution Control Project" means any activity or project at an existing electric utility steam 8
generating unit for purposes of reducing emissions from [such]a unit. [Such a]Activities or projects are 9
limited to: 10
(1) the installation of conventional or innovative pollution control technology, including [but not 11
limited to ]advanced flue gas desulfurization, sorbent injection for sulfur dioxide and nitrogen oxides 12
controls, and electrostatic precipitators; 13
(2) an activity or project to accommodate switching to a fuel which is less polluting than the fuel 14
used [prior to]before the activity or project, including[, but not limited to] natural gas or coal reburning, or the 15
cofiring of natural gas and other fuels for the purpose of controlling emissions; 16
(3) a permanent clean coal technology demonstration project conducted under Title II, [sec.]Section 17
101(d) of the Further Continuing Appropriations Act of 1985 (sec. 5903(d) of title 42 of the United States 18
Code), or subsequent appropriations, up to a total amount of $2,500,000,000 for commercial demonstration 19
of clean coal technology, or similar projects funded through appropriations for the Environmental Protection 20
Agency; or 21
(4) a permanent clean coal technology demonstration project that constitutes a repowering project. 22
"Potential to Emit" means the maximum capacity of a source to emit a pollutant under its physical 23
and operational design. Any physical or operational limitation on the capacity of the source to emit a 24
pollutant including air pollution control equipment and restrictions on hours of operation or on the type or 25
amount of material combusted, stored, or processed shall be treated as part of its design if the limitation or the 26
effect it would have on emissions is enforceable. Secondary emissions do not count in determining the 27
potential to emit of a stationary source. 28
"Primary PM2.5" means the sum of filterable PM2.5 and condensable PM2.5. 29
"Process Level" means the operation of a source, specific to the kind or type of fuel, input material, 30
or mode of operation. 31
"Process Rate" means the quantity per unit of time of any raw material or process intermediate 32
consumed, or product generated, through the use of any equipment, source operation, or control apparatus. 33
For a stationary internal combustion unit or any other fuel burning equipment, this term may be expressed as 34
the quantity of fuel burned per unit of time. 35
"Reactivation of a Very Clean Coal-Fired Electric Utility Steam Generating Unit" means any 36
physical change or change in the method of operation associated with the commencement of commercial 37
operations by a coal-fired utility unit after a period of discontinued operation where the unit: 38
(1) has not been in operation for the two-year period [prior to]before the enactment of the Clean Air 39
Act Amendments of 1990, and the emissions from [such]the unit continue to be carried in the emission 40
inventory at the time of enactment; 41
(2) was equipped [prior to]before shutdown with a continuous system of emissions control that 42
achieves a removal efficiency for sulfur dioxide of no less than 85% [percent ]and a removal efficiency for 43
particulates of no less than 98%[ percent]; 44
(3) is equipped with low-NOx burners [prior to]before [the time of commencement of ]operations 45
begin following reactivation; and 46
(4) is otherwise in compliance with the requirements of the Clean Air Act. 47
"Reasonable Further Progress" means annual incremental reductions in emission of an air pollutant 48
which are sufficient to provide for attainment of the NAAQS by the date identified in the State 49
Implementation Plan. 50
"Refuse" means solid wastes, such as garbage and trash. 51
"Regulated air pollutant" means any of the following: 52
(a) nitrogen oxides or any volatile organic compound; 53
(b) any pollutant for which a national ambient air quality standard has been promulgated; 54
Page 8 of 11
(c) any pollutant that is subject to any standard promulgated under Section 111 of the Act, Standards 1
of Performance for New Stationary Sources; 2
(d) any Class I or II substance subject to a standard promulgated under or established by Title VI of 3
the Act, Stratospheric Ozone Protection; or 4
(e) any pollutant subject to a standard promulgated under Section 112, Hazardous Air Pollutants, or 5
other requirements established under Section 112 of the Act, including Sections 112(g), (j), and (r) of the Act, 6
including any of the following: 7
(i) Any pollutant subject to requirements under Section 112(j) of the Act, Equivalent Emission 8
Limitation by Permit. If the Administrator fails to promulgate a standard by the date established pursuant to 9
Section 112(e) of the Act, any pollutant for which a subject source would be major shall be considered to be 10
regulated on the date 18 months after the applicable date established pursuant to Section 112(e) of the Act; 11
(ii) Any pollutant for which the requirements of Section 112(g)(2) of the Act, [(]Construction, 12
Reconstruction and Modification,[)] have been met, but only with respect to the individual source subject to 13
Section 112(g)(2) requirement. 14
"Repowering" means replacement of an existing coal-fired boiler with one of the following clean 15
coal technologies:[ atmospheric or pressurized fluidized bed combustion, integrated gasification combined 16
cycle, magnetohydrodynamics, direct and indirect coal-fired turbines, integrated gasification fuel cells, or as 17
determined by the Administrator, in consultation with the Secretary of Energy, a derivative of one or more of 18
these technologies, and any other technology capable of controlling multiple combustion emissions 19
simultaneously with improved boiler or generation efficiency and with significantly greater waste reduction 20
relative to the performance of technology in widespread commercial use as of November 15, 1990.] 21
(a) atmospheric or pressurized fluidized bed combustion; 22
(b) integrated gasification combined cycle; 23
(c) magnetohydrodynamics; 24
(d) direct and indirect coal-fired turbines; 25
(e) integrated gasification fuel cells; or 26
(f) as determined by the Administrator, in consultation with the Secretary of Energy, a derivative of 27
one or more of these technologies, and any other technology capable of controlling multiple combustion 28
emissions simultaneously with improved boiler or generation efficiency and with significantly greater waste 29
reduction relative to the performance of technology in widespread commercial use as of November 15, 1990. 30
(1) Repowering shall also include any oil [and/]or gas-fired unit which has been awarded clean coal 31
technology demonstration funding as of January 1, 1991, by the Department of Energy. 32
(2) The director shall give expedited consideration to permit applications for any source that satisfies 33
the requirements of this definition and is granted an extension under section 409 of the Clean Air Act. 34
"Representative Actual Annual Emissions" means the average rate, in tons per year, at which the 35
source is projected to emit a pollutant for the two-year period after a physical change or change in the method 36
of operation of unit, [(]or a different consecutive two-year period within [10]ten years after that change, 37
where the director determines that [such]the period is more representative of source operations[)], considering 38
the effect any [such ]change will have on increasing or decreasing the hourly emissions rate and on projected 39
capacity utilization. In projecting future emissions, the director shall: 40
(1) [C]consider [all]any relevant information, including [but not limited to, ]historical operational 41
data, the company's own representations, filings with the State of Federal regulatory authorities, and 42
compliance plans under title IV of the Clean Air Act; and 43
(2) [E]exclude, in calculating any increase in emissions that results from the particular physical 44
change or change in the method of operation at an electric utility steam generating unit, that portion of the 45
unit's emissions following the change that could have been accommodated during the representative baseline 46
period and is attributable to an increase in projected capacity utilization at the unit that is unrelated to the 47
particular change, including any increased utilization due to the rate of electricity demand growth for the 48
utility system as a whole. 49
"Residence" means a dwelling in which people live, including all ancillary buildings. 50
"Residential Solid Fuel Burning" device means any residential burning device except a fireplace 51
connected to a chimney that burns solid fuel and is capable of, and intended for use as a space heater, 52
domestic water heater, or indoor cooking appliance, and has an air-to-fuel ratio less than 35-to-1 as 53
determined by the test procedures prescribed in 40 CFR 60.534. It [must]shall also have a useable firebox 54
Page 9 of 11
volume of less than 6.10 cubic meters or 20 cubic feet, a minimum burn rate less than 5 kilograms per hour or 1
11 pounds per hour as determined by test procedures prescribed in 40 CFR 60.534, and weigh less than 800 2
kilograms or 362.9 pounds. Appliances that are described as prefabricated fireplaces and are designed to 3
accommodate doors or other accessories that would create the air starved operating conditions of a residential 4
solid fuel burning device shall be considered as such. Fireplaces are not included in this definition for solid 5
fuel burning devices. 6
"Road" means any public or private road. 7
"Salvage Operation" means any business, trade or industry engaged in whole or in part in salvaging 8
or reclaiming any product or material, including [but not limited to ]metals, chemicals, shipping containers, 9
or drums. 10
"Secondary Emissions" means emissions which would occur as a result of the construction or 11
operation of a major source or major modification, but do not come from the major source or major 12
modification itself. 13
Secondary emissions [must]shall be specific, well defined, quantifiable, and impact the same general 14
area as the source or modification which causes the secondary emissions. Secondary emissions include 15
emissions from any off-site support facility which would not be constructed or increase its emissions except 16
as a result of the construction or operation of the major source or major modification. Secondary emissions 17
do not include any emissions which come directly from a mobile source [such as]including emissions from 18
the tailpipe of a motor vehicle, from a train, or from a vessel. 19
Fugitive emissions and fugitive dust from the source or modification are not considered secondary 20
emissions. 21
"Secondary PM2.5" means particles that form or grow in mass through chemical reactions in the 22
ambient air well after dilution and condensation have occurred. Secondary PM2.5 is usually formed at some 23
distance downwind from the source. 24
"Significant" means: 25
(1) In reference to a net emissions increase or the potential of a source to emit any of the following 26
pollutants, a rate of emissions that would equal or exceed any of the following rates: 27
Carbon monoxide: 100 ton per year (tpy); 28
Nitrogen oxides: 40 tpy; 29
Sulfur dioxide: 40 tpy; 30
PM10: 15 tpy; 31
PM2.5: 10 tpy; 32
Particulate matter: 25 tpy; 33
Ozone: 40 tpy of volatile organic compounds; or 34
Lead: 0.6 tpy. 35
"Solid Fuel" means wood, coal, and other similar organic material or combination of these materials. 36
"Solvent" means organic materials which are liquid at standard conditions, [(]Standard Temperature 37
and Pressure,[)] and which are used as dissolvers, viscosity reducers, or cleaning agents. 38
"Source" means any structure, building, facility, or installation which emits or may emit any air 39
pollutant subject to regulation under the Clean Air Act and which is located on one or more continuous or 40
adjacent properties and which is under the control of the same person [or persons ]under common control. A 41
building, structure, facility, or installation means [all]any of the pollutant-emitting activities which belong to 42
the same industrial grouping. Pollutant-emitting activities shall be considered as part of the same industrial 43
grouping if they belong to the same "Major Group" [(i.e. ]which have the same two-digit code[)] as described 44
in the Standard Industrial Classification Manual, 1972, as amended by the 1977 Supplement, [(]US 45
Government Printing Office stock numbers 4101-0065 and 003-005-00176-0, respectively[)]. 46
"Stack" means any point in a source designed to emit solids, liquids, or gases into the air, including a 47
pipe or duct but not including flares. 48
"Standards of Performance for New Stationary Sources" means the [F]federally established 49
requirements for performance and record keeping, [(]Title 40 Code of Federal Regulations, Part 60[)]. 50
"State" means state of Utah[ State]. 51
"Temporary" means not more than 180 calendar days. 52
"Temporary Clean Coal Technology Demonstration Project" means a clean coal technology 53
demonstration project that is operated for a period of [5]five years or less, and which complies with the Utah 54
Page 10 of 11
State Implementation Plan and other requirements necessary to attain and maintain the national ambient air 1
quality standards during the project and after it is terminated. 2
"Threshold Limit Value - Ceiling (TLV-C)" means the airborne concentration of a substance which 3
may not be exceeded, as adopted by the American Conference of Governmental Industrial Hygienists in its 4
"Threshold Limit Values for Chemical Substances and Physical Agents and Biological Exposure Indices, 5
(2009)." 6
"Threshold Limit Value - Time Weighted Average (TLV-TWA)" means the time-weighted airborne 7
concentration of a substance adopted by the American Conference of Governmental Industrial Hygienists in 8
its "Threshold Limit Values for Chemical Substances and Physical Agents and Biological Exposure Indices, 9
(2009)." 10
"Total Suspended Particulate (TSP)" means minute separate particles of matter, collected by high 11
volume sampler. 12
"Toxic Screening Level" means an ambient concentration of an air pollutant equal to a threshold 13
limit value - ceiling (TLV- C) or threshold limit value -time weighted average (TLV-TWA) divided by a 14
safety factor. 15
"Trash" means solids not considered to be highly flammable or explosive including[, but not limited 16
to] clothing, rags, leather, plastic, rubber, floor coverings, excelsior, tree leaves, yard trimmings, and other 17
similar materials. 18
"VOC content" means the weight of VOC per volume of material and is calculated by the following 19
equation in gram/liter, [(or alternately in ]pound/gallon, or pound/pound[)]: 20
Grams of VOC per Liter of Material = Ws - Ww - Wes / Vm 21
Where: 22
Ws = weight of volatile organic compounds 23
Ww = weight of water 24
Wes = weight of exempt compounds 25
Vm = volume of material 26
"Volatile Organic Compound (VOC)" means VOC as defined in 40 CFR 51.100(s), effective as of 27
the date referenced in R307-101-3, is hereby adopted and incorporated by reference. 28
"Waste" means [all]any solid, liquid or gaseous material, including[, but not limited to,] garbage, 29
trash, household refuse, construction or demolition debris, or other refuse including that resulting from the 30
prosecution of any business, trade or industry. 31
"Zero Drift" means the change in the instrument meter readout over a stated period [of time ]of 32
normal continuous operation when the VOC concentration at the time of measurement is zero. 33
34
R307-101-3. Version of Code of Federal Regulations Incorporated by Reference. 35
Except as specifically identified in an individual rule, the version of the Code of Federal Regulations 36
(CFR) incorporated throughout Title R307 is dated July 1, 202[0]4. 37
38
KEY: air pollution, definitions 39
Date of Last Change: May 6, 2021 40
Notice of Continuation: November 1, 2023 41
Authorizing, and Implemented or Interpreted Law: 19-2-104(1)(a) 42
Page 11 of 11

August 7, 2024 Page 1 of 3
R307-101-3:
Summary of Code of Federal Regulations (CFR) Changes from July 1, 2020, to July 1, 2024
Rule CFR Section Incorporated Summary of Changes to CFR
R307-101-2 40 CFR 51.100(s), Definitions Added trans-1,1,1,4,4,4-hexafluorobut-2-ene (HFO-1336mzz(E)) to VOCs
R307-115-1 40 CFR Part 93, Subpart B No changes.
R307-170-7 40 CFR 75, Appendix A, Section 6.2 No changes.
R307-210-1 40 CFR Part 60, except for Subparts Cb, Cc,
Cd, Ce, BBBB, DDDD, and HHHH
See R307-210 Table for most relevant changes. This includes all OOOOb updates.
R307-214-1 40 CFR Part 61
National Emission Standards for Hazardous Air
Pollutants
61.04. Address. These changes were for new addresses and specific authority delegation
throughout the country for different air agencies and several state-specific changes, not
including Utah.

61.18. Incorporations by Reference for other states.

Appendix B to Part 61 – Test Methods
Added:
Method 114 – Test Methods for Measuring Radionuclide Emissions From Stationary
Sources
Method 115 – Monitoring for Radon-222 Emissions
Method 101 – Determination of Particulate and Gaseous Mercury Emissions From Chlor-
Alkali Plants (Air Streams)
12.0 Calculations and Data Analysis
12.3 Residual Vinyl Chloride Monomer Concentration, (Crvc) or Vinyl Chloride Monomer
Concentration. Calculate Crvc in ppm or mg/kg as follows:
R307-214 40 CFR Part 63 See CFR Table R307-214
R307-221-2 Definitions 40 CFR 60.751 No changes
R307-221-3 40 CFR 60.752 through 60.759, including
Appendix A
No changes
R307-221-4 Section 40 CFR Part 60.18 No changes.
R307-222-2 40 CFR 60.31e No changes.
R307-222-2 40 CFR 60.51c No changes.
R307-222-3 40 CFR 60.52c(b), 40 CFR 60.53c, 40 CFR
60.54c, 40 CFR 60.55c, 40 CFR 60.58c(b)
excluding (b)(2)(ii) and (b)(7), and 40 CFR
60.58c(c) through (f)
No changes.

August 7, 2024 Page 2 of 3
R307-101-3:
Summary of Code of Federal Regulations (CFR) Changes from July 1, 2020, to July 1, 2024
R307-222-4

Table 1A and Table 1B in 40 CFR Part 60,
Subpart Ce; 40 CFR 60.57c; and 40 CFR
60.56c, excluding 56c(b)(12) and 56c(c)(3)

No changes.
R307-222-5(2) Table 2 in 40 CFR Part 60, Subpart Ce
(40CFR60.30e-39e)

No changes.
R307-222-5(3) 40 CFR 60.36e(a)(1) and (a)(2) No changes.

R307-222-5(4) Testing requirements of 40 CFR 60.37e(b)(1)
through (b)(5)

No changes.

R307-222-5(5) 40 CFR 60.37e(d)(1) through (d)(3) No changes.
R307-222-5(6) 40 CFR 60.38e(b)(1) and (b)(2) No changes.
R307-223-1(2) 40 CFR 60.1555(a) through (k) No changes.
R307-223-2(1)

40 CFR 60.1940
Equations found in 40 CFR 60.1935

No changes.
R307-223-2(2) Equations found in 40 CFR 60.1935 No changes.
R307-223-3(1) 40 CFR 60.1540 and 60.1585 through 60.1905,
and with the requirements and schedules set
forth in Tables 2 through 8 that are found
following 40 CFR 60.1940 for operator training
and certification

40 CFR Part 60, subpart HHHH, Sections
60.4101 through 60.4124; (b) Sections 60.4142
paragraph (c)(2) through paragraph (c)(4); (c)
Sections 60.4150 through 60.4176.

No changes.
R307-224-2 40 CFR Part 60, subpart HHHH, Sections
60.4101 through 60.4124; (b) Sections 60.4142
paragraph (c)(2) through paragraph (c)(4); (c)
Sections 60.4150 through 60.4176.
No changes.

R307-310-2 40 CFR Part 93.101 No changes.

August 7, 2024 Page 3 of 3
R307-101-3:
Summary of Code of Federal Regulations (CFR) Changes from July 1, 2020, to July 1, 2024

R307-328 40 CFR Parts 63.421, 63.425(e), 63.425(i) While there were changes to 40 CFR 63.421 in 2021, there are no changes to the definition
of "Gasoline Cargo Tank" as referenced in the CFR.
63.425(e), 63.425(i) - no changes.

R307-415 40 CFR Parts 72.2, 72, 61.145, 720.3(ee),
70.8(d), 70.7(g)
 For 40 CFR Part 72, Chapter 1, Subchapter N, Section 402, appears currently in
"reserved" status.
 40 CFR Parts 72.2. No changes.
 40 CFR Part 61.145: No changes.
 40 CFR 720.3(ee): Last amended 2022, however no revisions were made to (ee).
 40 CFR 70.8(d): Last amended April 2020 (which was addressed on the prior CFR
Table submission to the Board.)
 40 CFR 70.7(g): Last amended April 2020 (which was addressed on the prior CFR
Table submission to the Board.)

R307-417-1 40 CFR Part 72 No changes.
R307-417-2 40 CFR Part 75
Continuous Emission Monitoring
67 FR 40394, Wednesday, July 12, 2002: Revisions to the Definition sand the Continuous
Emission Monitoring Provisions of the Acid Rain Program and the NOx Budget Trading
Program

This rulemaking established additional flexibility and options for sources in meeting the
continuous emission monitoring system (CEMS) requirements under programs to reduce
sulfur dioxide and nitrogen oxides emissions. These revisions may apply to sources that
monitor and report emissions only during the ozone season, as well as to sources that
monitor and report emissions for the entire year. The provisions in this final rule benefit the
environment by ensuring that sulfur dioxide (S02), nitrogen oxides (NOX), and carbon
dioxide (CO2) emissions are accurately monitored and reported, even as they benefit the
affected industrial sources by creating opportunities to adopt cost saving procedures.

R307-417-3 40 CFR Part 76 No changes.
R307-801-4 40 CFR 763 Subpart E, and appendices No changes.
August 7, 2024 Page 1 of 7
FR Number Title Effective Date Summary
85 FR 57018 OOOO,
OOOOa
Oil and Natural Gas Sector: Emission Standards
for New, Reconstructed, and Modified Sources
Review
9/14/2020 This action finalizes amendments to the oil and natural gas new source
performance standards (NSPS) promulgated in 2012 and 2016. These
amendments remove sources in the transmission and storage segment from
the source category, rescind the NSPS (including both the volatile organic
compounds (VOC) and methane requirements) applicable to those sources,
and separately rescinds the methane-specific requirements of the NSPS
applicable to sources in the production and processing segments.
Furthermore, the U.S. Environmental Protection Agency (EPA) adopts an
interpretation of Clean Air Act (CAA) section 111 under which the EPA, as a
predicate to promulgating NSPS for certain air pollutants, must determine
that the pertinent pollutant causes or contributes significantly to dangerous
air pollution.
85 FR 57398 OOOO,
OOOOa
Oil and Natural Gas Sector: Emission Standards
for New, Reconstructed, and Modified Sources
Reconsideration
11/16/2020 This action finalizes amendments to the new source performance standards
(NSPS) for the oil and natural gas sector. The Environmental Protection
Agency (EPA) granted reconsideration on the fugitive emissions
requirements, well site pneumatic pump standards, requirements for
certification of closed vent systems (CVS) by a professional engineer (PE),
and the provisions to apply for the use of an alternative means of emission
limitation (AMEL). This final action includes amendments as a result of the
EPA's reconsideration of the issues associated with the above mentioned
four subject areas and other issues raised in the reconsideration petitions
for the NSPS, as well as amendments to streamline the implementation of
the rule. This action also includes technical corrections and additional
clarifying language in the regulatory text and/or preamble where the EPA
concludes further clarification is warranted.
New Source Performance Standards (NSPS), Incorporated through R307-210
Summary of 40 Code of Federal Regulations Part 60 Relevant Updates
from July 1, 2020, to July 1, 2024
August 7, 2024 Page 2 of 7
FR Number Title Effective Date Summary
New Source Performance Standards (NSPS), Incorporated through R307-210
Summary of 40 Code of Federal Regulations Part 60 Relevant Updates
from July 1, 2020, to July 1, 2024
85 FR 70487 Bba National Emission Standards for Hazardous Air
Pollutants for Chemical Recovery Combustion
Sources at Kraft, Soda, Sulfite, and Stand-Alone
Semichemical Pulp Mills; Standards of
Performance for Kraft Pulp Mill Affected
Sources for Which Construction,
Reconstruction, or Modification Commenced
After May 23, 2013
11/12/2020 The U.S. Environmental Protection Agency (EPA) is finalizing amendments
to the National Emission Standards for Hazardous Air Pollutants (NESHAP)
for Chemical Recovery Combustion Sources at Kraft, Soda, Sulfite, and
Stand-alone Semichemical Pulp Mills, and the New Source Performance
Standards (NSPS) for Kraft Pulp Mills constructed, reconstructed, or
modified after May 23, 2013. The final rule clarifies how to set operating
limits for smelt dissolving tank (SDT) scrubbers used at these mills and
corrects cross-reference errors in both rules.
86 FR 5013 Kb Standards of Performance for Volatile Organic
Liquid Storage Vessels (Including Petroleum
Liquid Storage Vessels) for Which Construction,
Reconstruction, or Modification Commenced
After July 23, 1984
1/19/2021 The U.S. Environmental Protection Agency (EPA) is finalizing amendments
to the Standards of Performance for Volatile Organic Liquid Storage Vessels
(Including Petroleum Liquid Storage Vessels) for Which Construction,
Reconstruction, or Modification Commenced After July 23, 1984. We are
finalizing specific amendments that would allow owners or operators of
storage vessels subject to the Standards of Performance for Volatile
Organic Liquid Storage Vessels and equipped with either an external
floating roof (EFR) or internal floating roof (IFR) to voluntarily elect to
comply with the requirements specified in the National Emission Standards
for Storage Vessels (Tanks)--Control Level 2, as an alternative standard, in
lieu of the requirements specified in the Standards of Performance for
Volatile Organic Liquid Storage Vessels, subject to certain caveats and
exceptions for monitoring, recordkeeping, and reporting.
August 7, 2024 Page 3 of 7
FR Number Title Effective Date Summary
New Source Performance Standards (NSPS), Incorporated through R307-210
Summary of 40 Code of Federal Regulations Part 60 Relevant Updates
from July 1, 2020, to July 1, 2024
86 FR 2542 TTTT Pollutant-Specific Significant Contribution
Finding for Greenhouse Gas Emissions From
New, Modified, and Reconstructed Stationary
Sources: Electric Utility Generating Units, and
Process for Determining Significance of Other
New Source Performance Standards Source
Categories
3/15/2021 In this final action, the U.S. Environmental Protection Agency (EPA) is
finalizing a significant contribution finding (SCF) for purposes of regulating
source categories for greenhouse gas (GHG) emissions, under section
111(b) of the Clean Air Act (CAA) for electric generating units (EGUs), and
in doing so, reaffirming that EGUs remain a listed source category. The EPA
has reached that conclusion by articulating a framework under which source
categories are considered to contribute significantly to dangerous air
pollution due to their GHG emissions if the amount of those emissions
exceeds 3 percent of total U.S. GHG emissions. The EPA is applying the 3-
percent threshold to the EGU source category to demonstrate that GHG
emissions from the EGU source category would contribute significantly to
dangerous air pollution. While EGU GHG emissions exceed this threshold
by a sufficient magnitude to warrant an SCF without more ado, the EPA has
also, for completeness, analyzed EGU emissions under a secondary criteria
framework, which also demonstrates the propriety of the SCF.
87 FR 48603 IIII, JJJJ National Emission Standards for Hazardous Air
Pollutants for Reciprocating Internal Combustion
Engines; New Source Performance Standards
for Stationary Internal Combustion Engines;
Court Vacatur
8/10/2022 The Environmental Protection Agency (EPA) is amending the Code of
Federal Regulations (CFR) to reflect a 2015 court decision regarding the
National Emission Standards for Hazardous Air Pollutants (NESHAP) for
Stationary Reciprocating Internal Combustion Engines (RICE) and the New
Source Performance Standards (NSPS) for Stationary Internal Combustion
Engines (ICE). The court vacated provisions in the regulations specifying
that emergency engines could operate for emergency demand response or
during periods where there is a deviation of voltage or frequency. This
ministerial rule revises the RICE NESHAP and ICE NSPS to conform to the
court's decision.
August 7, 2024 Page 4 of 7
FR Number Title Effective Date Summary
New Source Performance Standards (NSPS), Incorporated through R307-210
Summary of 40 Code of Federal Regulations Part 60 Relevant Updates
from July 1, 2020, to July 1, 2024
88 FR 11556 KK, KKa New Source Performance Standards Review for
Lead Acid Battery Manufacturing Plants and
National Emission Standards for Hazardous Air
Pollutants for Lead Acid Battery Manufacturing
Area Sources Technology Review
1/23/2023 This action finalizes the results of the Environmental Protection Agency's
(EPA's) review of the New Source Performance Standards (NSPS) for Lead
Acid Battery Manufacturing Plants and the technology review for the
National Emission Standards for Hazardous Air Pollutants (NESHAP) for
Lead Acid Battery Manufacturing Area Sources as required under the Clean
Air Act (CAA). The EPA is finalizing revised lead emission limits for grid
casting, paste mixing, and lead reclamation operations for both the area
source NESHAP and under a new NSPS subpart (for lead acid battery
manufacturing facilities that begin construction, reconstruction, or
modification after February 23, 2022). In addition, the EPA is finalizing the
following amendments for both the area source NESHAP and under the new
NSPS subpart: performance testing once every 5 years to demonstrate
compliance; work practices to minimize emissions of fugitive lead dust;
increased inspection frequency of fabric filters; clarification of activities that
are considered to be lead reclamation activities; electronic reporting of
performance test results and semiannual compliance reports; and the
removal of exemptions for periods of startup, shutdown, and malfunctions
(SSM). The EPA is also finalizing a revision to the applicability provisions in
the area source NESHAP such that facilities which make lead-bearing
battery parts or process input material, including but not limited to grid
casting facilities and lead oxide manufacturing facilities, will be subject to
the area source NESHAP. In addition, the EPA is finalizing a requirement in
the new NSPS for new facilities to operate bag leak detection systems for
emission points controlled by a fabric filter that do not include a secondary
fabric filter.
88 FR 18056 TTT, TTTa New Source Performance Standards Review for
Industrial Surface Coating of Plastic Parts for
Business Machines
3/27/2023 The Environmental Protection Agency (EPA) is finalizing amendments to the
new source performance standards for Industrial Surface Coating of Plastic
Parts for Business Machines pursuant to the review required by the Clean
Air Act. For affected facilities that commence construction, modification, or
reconstruction after June 21, 2022, the EPA is, in a new subpart, finalizing
volatile organic compound (VOC) emission limitations for prime, color,
texture, and touch-up coating operations. We are also finalizing a
requirement for electronic submission of periodic compliance reports.
August 7, 2024 Page 5 of 7
FR Number Title Effective Date Summary
New Source Performance Standards (NSPS), Incorporated through R307-210
Summary of 40 Code of Federal Regulations Part 60 Relevant Updates
from July 1, 2020, to July 1, 2024
88 FR 58442 AA, AAa,
AAb
New Source Performance Standards Review for
Steel Plants: Electric Arc Furnaces and Argon-
Oxygen Decarburization Vessels
8/25/2023 The Environmental Protection Agency (EPA) is finalizing amendments to the
new source performance standards (NSPS) for electric arc furnaces (EAF)
and argon-oxygen decarburization (AOD) vessels in the steel industry
pursuant to the review required by the Clean Air Act.
88 FR 80594 L, La New Source Performance Standards Review for
Secondary Lead Smelters
11/20/2023 The Environmental Protection Agency (EPA) is finalizing amendments to the
new source performance standards (NSPS) for secondary lead smelters
pursuant to the periodic review required by the Clean Air Act (CAA).
Specifically, the EPA is finalizing revisions to the NSPS that applies to
affected secondary lead smelters constructed, reconstructed, or modified
after December 1, 2022 (NSPS subpart La). The EPA is also finalizing
amendments to the NSPS for secondary lead smelters constructed,
reconstructed, or modified after June 11, 1973, and on or before December
1, 2022, (NSPS subpart L). In addition, we are finalizing the use of EPA
Method 22 (Visual Determination of Fugitive Emissions from Material
Sources and Smoke Emissions from Flares) as an alternative for
demonstrating compliance with the opacity limit.
August 7, 2024 Page 6 of 7
FR Number Title Effective Date Summary
New Source Performance Standards (NSPS), Incorporated through R307-210
Summary of 40 Code of Federal Regulations Part 60 Relevant Updates
from July 1, 2020, to July 1, 2024
88 FR 80480 B, Ba Adoption and Submittal of State Plans for
Designated Facilities: Implementing Regulations
Under Clean Air Act Section 111(d)
12/18/2023 The Environmental Protection Agency (EPA) is finalizing amendments to the
regulations that govern the processes and timelines for state and Federal
plans to implement emission guidelines under Clean Air Act (CAA) New
Source Performance Standards for existing sources (the "implementing
regulations"). The amendments include revisions to the timing requirements
for state and the EPA actions related to plans; the addition of mechanisms
to improve flexibility and efficiency in plan processes; and new requirements
for demonstration of timely meaningful engagement with pertinent
stakeholders--including, but not limited to, industry, small businesses, and
communities most affected by and vulnerable to the impacts of the plan.
This action additionally provides a process for states' consideration of
`remaining useful life and other factors' (RULOF) in applying a standard of
performance; amends the definition of standard of performance in the
implementing regulations; and clarifies compliance flexibilities that states
may choose to incorporate into state plans, including trading or averaging.
Finally, this action adds requirements for the electronic submission of state
plans and provides several other clarifications and minor revisions to the
implementing regulations.
89 FR 27392 EEEE,
FFFF
Other Solid Waste Incinerators; Air Curtain
Incinerators Title V Permitting Provisions
4/17/2024 On August 31, 2020, in accordance with requirements under the Clean Air
Act (CAA), the U.S. Environmental Protection Agency (EPA) performed a 5-
year review of the Standards of Performance for New Stationary Sources
and Emissions Guidelines for Existing Sources: Other Solid Waste
Incineration (OSWI) Units, which includes certain very small municipal
waste combustion (VSMWC) and institutional waste incineration (IWI) units.
In the same action, the EPA proposed to remove the title V permitting
requirements for air curtain incinerators (ACI) that burn only wood waste,
clean lumber, yard waste, or a mixture of these three types of waste. In
response to supportive comments received on the August 2020 proposal,
this action is finalizing, as proposed, to remove the title V permitting
requirements for ACIs that only burn wood waste, clean lumber, yard waste,
or a mixture of those, and are not located at title V major sources or subject
to title V for other reasons. The EPA is finalizing this proposed action now to
simplify the compliance obligations for owners and operators of these types
of units.
August 7, 2024 Page 7 of 7
FR Number Title Effective Date Summary
New Source Performance Standards (NSPS), Incorporated through R307-210
Summary of 40 Code of Federal Regulations Part 60 Relevant Updates
from July 1, 2020, to July 1, 2024
89 FR 16820 OOOO,
OOOOa.
OOOOb,
OOOOc
Standards of Performance for New,
Reconstructed, and Modified Sources and
Emissions Guidelines for Existing Sources: Oil
and Natural Gas Sector Climate Review
5/7/2024 The Environmental Protection Agency (EPA) is finalizing multiple actions to
reduce air pollution emissions from the Crude Oil and Natural Gas source
category. First, the EPA is finalizing revisions to the new source
performance standards (NSPS) regulating greenhouse gases (GHGs) and
volatile organic compounds (VOCs) emissions for the Crude Oil and Natural
Gas source category pursuant to the Clean Air Act (CAA). Second, the EPA
is finalizing emission guidelines (EG) under the CAA for states to follow in
developing, submitting, and implementing state plans to establish
performance standards to limit GHG emissions from existing sources
(designated facilities) in the Crude Oil and Natural Gas source category.
Third, the EPA is finalizing several related actions stemming from the joint
resolution of Congress, adopted on June 30, 2021, under the Congressional
Review Act (CRA), disapproving the EPA's final rule titled, "Oil and Natural
Gas Sector: Emission Standards for New, Reconstructed, and Modified
Sources Review," September 14, 2020 ("2020 Policy Rule"). Fourth, the
EPA is finalizing a protocol under the general provisions for optical gas
imaging (OGI).
August 7, 2024 Page 1 of 5
FR Number Subpart Title Effective Date Summary
85 FR 73854 A, F, G, H, J, L, M, N, O, Q, R, S, T,
U, W, X, Y, AA, BB, CC, DD, EE, GG,
HH, II, JJ, KK, LL, MM, YY, CCC,
DDD, EEE, GGG, HHH, III, JJJ, LLL,
MMM, NNN, OOO, PPP, QQQ, RRR,
TTT, UUU, VVV, XXX, EEEE, FFFF,
GGGG, IIII, JJJJ, KKKK, MMMM,
NNNN, OOOO, PPPP, QQQQ,
RRRR, SSSS, TTTT, UUUU, VVVV,
WWWW, XXXX, YYYY, ZZZZ,
AAAAA, BBBBB, CCCCC, DDDDD,
EEEEE, FFFFF, GGGGG, HHHHH,
IIIII, JJJJJ, KKKKK, LLLLL, MMMMM,
NNNNN, PPPPP, QQQQQ, RRRRR,
SSSSS, TTTTT, WWWWW,
BBBBBB, CCCCCC, HHHHHH,
PPPPPP, RRRRRR, QQQQQQ,
TTTTTT, YYYYYY, WWWWWW,
XXXXXX, AAAAAAA, BBBBBBB,
CCCCCCC, HHHHHHH.
Reclassification of Major Sources as Area
Sources Under Section 112 of the Clean Air Act.
1/19/2021 This rule finalizes amendments to the General Provisions that apply to
National Emission Standards for Hazardous Air Pollutants (NESHAP).
These amendments implement the plain language reading of the "major
source" and "area source" definitions of section 112 of the Clean Air Act
(CAA) and provide that a major source can be reclassified to area source
status at any time upon reducing its potential to emit (PTE) hazardous air
pollutants (HAP) to below the major source thresholds (MST) of 10 tons per
year (tpy) of any single HAP and 25 tpy of any combination of HAP. This rule
also finalizes amendments to clarify the compliance dates, notification, and
recordkeeping requirements that apply to sources choosing to reclassify to
area source status and to sources that revert back to major source status,
including a requirement for electronic notification.
86 FR 13819 A Court Vacatur of Exemption From Emission
Standards During Periods of Startup, Shutdown,
and Malfunction
3/11/2021 The U.S. Environmental Protection Agency (EPA) is amending the Code of
Federal Regulations (CFR) to reflect a court order regarding the General
Provisions for National Emissions Standards for Hazardous Air Pollutants
(NESHAP) issued on December 19, 2008, by the United States Court of
Appeals for the District of Columbia Circuit (the court). The court vacated
two provisions in the General Provisions that exempted sources from
hazardous air pollutant (HAP) non-opacity and opacity emission standards
during periods of startup, shutdown, and malfunction (SSM). The court held
that under the Clean Air Act (CAA), emissions standards or limitations must
be continuous in nature and that the SSM exemptions in these two
provisions violate this requirement. This ministerial action revises these two
NESHAP General Provisions in the CFR to conform to the court's order.
87 FR 393 C Clean Air Act Section 112 List of Hazardous Air
Pollutant: Amendments to the List of Hazardous
Air Pollutants (HAP)
2/4/2022 The U.S. Environmental Protection Agency (EPA) is amending the list of
hazardous air pollutants (HAP) under Clean Air Act (CAA) to add 1-
bromopropane (1-BP) in response to public petitions previously granted by
the EPA. This action amends the list of hazardous air pollutants initially listed
under the CAA.
National Emission Standards for Hazardous Air Pollutants (NESHAP) for Source Categories,
Incorporated through R307-214
Summary of 40 Code of Federal Regulations Part 63 Relevant Updates from July 1, 2020, to July 1, 2024
August 7, 2024 Page 2 of 5
FR Number Subpart Title Effective Date Summary
National Emission Standards for Hazardous Air Pollutants (NESHAP) for Source Categories,
Incorporated through R307-214
Summary of 40 Code of Federal Regulations Part 63 Relevant Updates from July 1, 2020, to July 1, 2024
87 FR 8197 AAAA National Emission Standards for Hazardous Air
Pollutants: Municipal Solid Waste Landfills
Residual Risk and Technology Review;
Correction
2/14/2022 In this action, the U.S. Environmental Protection Agency (EPA) is finalizing
technical revisions and clarifications for the national emission standards for
hazardous air pollutants (NESHAP) for MSW Landfills established in the
March 26, 2020, final rule. This final rule also amends the MSW Landfills
NSPS at 40 CFR part 60, subpart XXX, to clarify and align the timing of
compliance for certain requirements involving installation of a gas collection
and control system (GCCS) under related MSW landfill rules. Additionally,
the EPA is revising the definition of Administrator in the MSW Landfills
Federal Plan that was promulgated on May 21, 2021 to clarify who has the
authority to implement and enforce the applicable requirements. The EPA is
also making some minor typographical corrections.
87 FR 13183 YYYY National Emission Standards for Hazardous Air
Pollutants: Stationary Combustion Turbines;
Amendments
3/9/2022 The U.S. Environmental Protection Agency (EPA) is finalizing amendments
to the National Emission Standards for Hazardous Air Pollutants (NESHAP)
for Stationary Combustion Turbines. This final action removes the stay of the
effectiveness of the standards for new lean premix and diffusion flame gas-
fired turbines that was promulgated in 2004.
87 FR 48603 ZZZZ National Emission Standards for Hazardous Air
Pollutants for Reciprocating Internal Combustion
Engines; New Source Performance Standards
for Stationary Internal Combustion Engines;
Court Vacatur
8/10/2022 The Environmental Protection Agency (EPA) is amending the Code of
Federal Regulations (CFR) to reflect a 2015 court decision regarding the
National Emission Standards for Hazardous Air Pollutants (NESHAP) for
Stationary Reciprocating Internal Combustion Engines (RICE) and the New
Source Performance Standards (NSPS) for Stationary Internal Combustion
Engines (ICE). The court vacated provisions in the regulations specifying
that emergency engines could operate for emergency demand response or
during periods where there is a deviation of voltage or frequency. This
ministerial rule revises the RICE NESHAP and ICE NSPS to conform to the
court's decision.
August 7, 2024 Page 3 of 5
FR Number Subpart Title Effective Date Summary
National Emission Standards for Hazardous Air Pollutants (NESHAP) for Source Categories,
Incorporated through R307-214
Summary of 40 Code of Federal Regulations Part 63 Relevant Updates from July 1, 2020, to July 1, 2024
87 FR 60816 DDDDD National Emission Standards for Hazardous Air
Pollutants for Major Sources: Industrial,
Commercial, and Institutional Boilers and
Process Heaters
12/5/2022 This action finalizes amendments to the national emission standards for
hazardous air pollutants (NESHAP) at major sources from new and existing
industrial, commercial, and institutional (ICI) boilers and process heaters.
Certain aspects of these standards were challenged and subsequently
remanded to the Agency by the United States Court of Appeals for the
District of Columbia Circuit (D.C. Circuit). This action finalizes amendments
to several numeric emission limits for new and existing boilers and process
heaters consistent with the court's opinion and sets compliance dates for
these new emission limits. This action also provides further explanation of
one aspect of the Agency's use of carbon monoxide (CO) as a surrogate for
organic hazardous air pollutants (HAP) and its use of a CO threshold to
represent the application of the maximum achievable control technology
(MACT) for organic HAP. We are also finalizing several technical
clarifications and corrections.
87 FR 78545 GGGGG National Emission Standards for Hazardous Air P 12/22/2022 This action finalizes amendments to the national emission standards for
hazardous air pollutants (NESHAP) for the site remediation source category.
This action finalizes amendments to remove exemptions from the rule for
site remediation activities performed under authority of the Comprehensive
Environmental Response, Compensation, and Liability Act (CERCLA) as a
remedial action or a non- time-critical removal action, and for site
remediation activities performed under Resource Conservation and
Recovery Act (RCRA) corrective actions conducted at treatment, storage,
and disposal facilities.
88 FR 10842 HHHHH National Emission Standards for Hazardous Air
Pollutants: Miscellaneous Coating Manufacturing
Technology Review
2/2/2023 The U.S. Environmental Protection Agency (EPA) is taking final action on
the technology review conducted on the Miscellaneous Coating
Manufacturing (MCM) source category regulated under the National
Emission Standards for Hazardous Air Pollutants (NESHAP). These final
amendments include provisions for inorganic hazardous air pollutant (HAP)
standards for process vessels.
August 7, 2024 Page 4 of 5
FR Number Subpart Title Effective Date Summary
National Emission Standards for Hazardous Air Pollutants (NESHAP) for Source Categories,
Incorporated through R307-214
Summary of 40 Code of Federal Regulations Part 63 Relevant Updates from July 1, 2020, to July 1, 2024
88 FR 11556 PPPPPP New Source Performance Standards Review for
Lead Acid Battery Manufacturing Plants and
National Emission Standards for Hazardous Air
Pollutants for Lead Acid Battery Manufacturing
Area Sources Technology Review
2/23/2023 This action finalizes the results of the Environmental Protection Agency's
(EPA's) review of the New Source Performance Standards (NSPS) for Lead
Acid Battery Manufacturing Plants and the technology review for the National
Emission Standards for Hazardous Air Pollutants (NESHAP) for Lead Acid
Battery Manufacturing Area Sources as required under the Clean Air Act
(CAA). The EPA is finalizing revised lead emission limits for grid casting,
paste mixing, and lead reclamation operations for both the area source
NESHAP and under a new NSPS subpart (for lead acid battery
manufacturing facilities that begin construction, reconstruction, or
modification after February 23, 2022). In addition, the EPA is finalizing the
following amendments for both the area source NESHAP and under the new
NSPS subpart: performance testing once every 5 years to demonstrate
compliance; work practices to minimize emissions of fugitive lead dust;
increased inspection frequency of fabric filters; clarification of activities that
are considered to be lead reclamation activities; electronic reporting of
performance test results and semiannual compliance reports; and the
removal of exemptions for periods of startup, shutdown, and malfunctions
(SSM). The EPA is also finalizing a revision to the applicability provisions in
the area source NESHAP such that facilities which make lead-bearing
battery parts or process input material, including but not limited to grid
casting facilities and lead oxide manufacturing facilities, will be subject to the
area source NESHAP. In addition, the EPA is finalizing a requirement in the
new NSPS for new facilities to operate bag leak detection systems for
emission points controlled by a fabric filter that do not include a secondary
fabric filter.
88 FR 13956 UUUUU National Emission Standards for Hazardous Air
Pollutants: Coal- and Oil-Fired Electric Utility
Steam Generating Units-Revocation of the 2020
Reconsideration and Affirmation of the
Appropriate and Necessary Supplemental
Finding
3/6/2023 After consideration of public comments, the EPA is revoking a May 22, 2020
finding that it is not appropriate and necessary to regulate coal- and oil-fired
electric utility steam generating units (EGUs) under Clean Air Act (CAA)
section 112, and concluding, as it did in its April 25, 2016 finding, that it
remains appropriate and necessary to regulate hazardous air pollutant
(HAP) emissions from EGUs after considering cost.
89 FR 16408 RRRRR National Emission Standards for Hazardous Air
Pollutants: Taconite Iron Ore Processing
3/6/2024 The U.S. Environmental Protection Agency (EPA) is finalizing amendments
to the National Emission Standards for Hazardous Air Pollutants (NESHAP)
for Taconite Iron Ore Processing. Specifically, the EPA is finalizing
maximum achievable control technology (MACT) standards for mercury (Hg)
and establishing revised emission standards for hydrogen chloride (HCl) and
hydrogen fluoride (HF). This final action ensures that emissions of all
hazardous air pollutants (HAP) emitted from the Taconite Iron Ore
Processing source category are regulated.
August 7, 2024 Page 5 of 5
FR Number Subpart Title Effective Date Summary
National Emission Standards for Hazardous Air Pollutants (NESHAP) for Source Categories,
Incorporated through R307-214
Summary of 40 Code of Federal Regulations Part 63 Relevant Updates from July 1, 2020, to July 1, 2024
89 FR 23840 XX, YY, EEEE, FFFF, CC National Emission Standards for Hazardous Air
Pollutants: Ethylene Production, Miscellaneous
Organic Chemical Manufacturing, Organic
Liquids Distribution (Non-Gasoline), and
Petroleum Refineries Reconsideration
4/4/2024 On July 6, 2020, the U.S. Environmental Protection Agency (EPA or the
Agency) finalized the residual risk and technology review (RTR) conducted
for the Ethylene Production source category, which is part of the Generic
Maximum Achievable Control Technology Standards National Emission
Standards for Hazardous Air Pollutants (NESHAP); on July 7, 2020, the EPA
finalized the RTR conducted for the Organic Liquids Distribution (Non-
Gasoline) NESHAP; and on August 12, 2020, the EPA finalized the RTR
conducted for the Miscellaneous Organic Chemical Manufacturing NESHAP.
Amendments to the Petroleum Refinery Sector NESHAP were most recently
finalized on February 4, 2020. Subsequently, the EPA received and granted
various petitions for reconsideration on these NESHAP for, among other
things, the provisions related to the work practice standards for pressure
relief devices (PRDs), emergency flaring, and degassing of floating roof
storage vessels. This action finalizes proposed amendments to remove the
force majeure exemption for PRDs and emergency flaring, incorporate
clarifications for the degassing requirements for floating roof storage
vessels, and address other corrections and clarifications.
89 FR 23294 FFFFF National Emission Standards for Hazardous Air
Pollutants: Integrated Iron and Steel
Manufacturing Facilities Technology Review
6/3/2024 The U.S. Environmental Protection Agency (EPA or the Agency) is finalizing
amendments to the National Emission Standards for Hazardous Air
Pollutants (NESHAP) for Integrated Iron and Steel Manufacturing Facilities
to regulate hazardous air pollutant (HAP) emissions. The amendments
include: HAP from unmeasured fugitive and intermittent particulate (UFIP)
sources previously not regulated by the NESHAP; previously unregulated
HAP for sinter plants:; previously unregulated pollutants for blast furnace
(BF) stoves and basic oxygen process furnaces (BOPFs) primary control
devices; and previously unregulated pollutants for BF primary control
devices. We are also finalizing an update to the technology review for this
source category.

ITEM 5
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-426-24

M E M O R A N D U M

TO: Air Quality Board

FROM: Bryce C. Bird, Executive Secretary

DATE: July 2, 2024

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

Asbestos Demolition/Renovation NESHAP Inspections 13
Asbestos AHERA Inspections 12
Asbestos State Rules Only Inspections 9
Asbestos Notification Forms Accepted 151
Asbestos Telephone Calls 297
Asbestos Individuals Certifications Approved 93
Asbestos Company Certifications 7
Asbestos Alternate Work Practices Approved 4
Lead-Based Paint (LBP) Inspections 4
LBP Notification Forms Approved 0
LBP Telephone Calls 65
LBP Letters Prepared and Mailed 0
LBP Courses Reviewed/Approved 0
LBP Course Audits 0
LBP Individual Certifications Approved 22
DAQA-426-24
Page 2

LBP Firm Certifications 16
Notices of Violation Sent 0
Compliance Advisories Sent 7
Warning Letters Sent 5
Settlement Agreements Finalized 2
Penalties Agreed to:
Randy Spiers/That Asbestos Guy Environmental, LLC $375.00
Frank LeBaron/SOLID Group Utah $2,850.00
Total: $3,225.00

Compliance

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-661-24

M E M O R A N D U M

TO: Air Quality Board

FROM: Bryce C. Bird, Executive Secretary

DATE: July 3, 2024

SUBJECT: Compliance Activities – June 2024
_____________________________________________________________________________________

ACTIVITIES:
Activity Monthly Total 36-Month Average
Inspections 53 59
On-Site Stack Test & CEM Audits 5 4
Stack Test & RATA Report Reviews 31 36
Emission Report Reviews 29 17
Temporary Relocation Request Reviews 13 7
Fugitive Dust Control Plan Reviews 126 126
Soil Remediation Report Reviews 3 2
Open Burn Permits Issued 34 584
Miscellaneous Inspections1 15 16
Complaints Received 42 17
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 4 2
Notices of Violation Issued 0 0
Compliance Advisories Issued 7 5
No Further Action Letters Issued 1 3
Settlement Agreements Reached 3 2
Penalties Assessed $5,400 $120,767.88
1Miscellaneous inspections include, e.g., surveillance, complaint, on-site training, dust patrol, smoke patrol, open
burning, etc.

DAQC-661-24
Page 2

SETTLEMENT AGREEMENTS:
Party Amount
Ovintiv USA Inc. $2,800
Holcim $1,000
Quinex Energy Corp. $1,600

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
Holcim 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 May 2024
Brigham City 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)
*
BG BV CV ED HV HW LN NR RP RS SF SM EQ V4
Arith Mean 54533456544453
Max 24-hr Avg 10777779912128697
98th percentile 9676678910116786
Days of Data 31 31 31 31 31 31 31 31 30 31 31 31 31 31
Days >35 µg/m300000000000000
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 June 2024
Brigham City Bountiful Copperview Erda
Harrisville Hawthorne Lindon Near road
Rose Park Roosevelt Spanish Fork Smithfield
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)
*
BG BV CV ED HV HW LN NR RP RS SF SM EQ V4
Arith Mean 8789651010867675
Max 24-hr Avg 13 10 13 19 10 9 17 17 13 12 12 10 12 9
98th percentile 1391215 9 9 15171211121012 9
Days of Data 30 30 30 30 30 30 30 30 30 30 30 30 30 30
Days >35 µg/m300000000000000
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 July 2024
Brigham City Bountiful Copperview Erda
Harrisville Hawthorne Lindon Near road
Rose Park Roosevelt Spanish Fork Smithfield
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)
*
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 May 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 12 12 17 21 18 17
Max 24-hr Avg 27 24 33 64 126 35
Days of Data 31 30 31 31 31 31
Days >150 µg/m 3 000000
Utah Division of Air Quality
0
50
100
150
200
250
300
350
400
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
10
(µ
g
/
m
3)
Days
Utah 24-hr PM10 Data June 2024
Harrisville Hawthorne Herriman #3 Lindon Roosevelt Environmental Quality 24-hr Exceedance Value is 150 ug/m3
Exceedance Value is 150 ug/m3
*
*EnvironmentalQuality (EQ) previously named Technical Support Center (TSC)
HV HW H3 LN RS EQ
Arith Mean 23 21 33 32 23 26
Max 24-hr Av g 62 31 51 67 105 41
Days of Data 30 30 30 29 29 30
Days >150 µg/m 3 000000
Utah Division of Air Quality
0
50
100
150
200
250
300
350
400
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
10
(µ
g
/
m
3)
Days
Utah 24-hr PM10 Data July 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 26 23 35 50 20 29
Max 24-hr Av g 38 44 51 107 42 48
Days of Data 22 22 22 22 20 22
Days >150 µg/m 3 000000
12.2
17.0
14.7
24.6
20.0
12.0
9.1
11.1
17.2
19.3 21.7
25.7
27.3
23.6
23.2
26.5
26.4
26.0
21.8
14.9
18.1
24.4
15.0
21.1
15.9
23.2
26.4
31.3
25.3
22.1
25.6
-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 May 2024
Bountiful Copperview Erda Herriman #3 HV Hawthorne Near Road Red butte Rose Park Environmental Quality Exceed.TM
*
*Environmental Quality (EQ) previously named Technical Support Center (TSC)
** Controlling Monitor
**
BV CV ED H3 HV HW NR RB RP EQ
Arith Mean .051 .051 .051 .046 .050 .048 .047 .050 .051 .049
8 -hr. Ozone 4th Max .058 .059 .058 .053 .056 .056 .056 .057 .059 .058
Days of Data 31 31 31 31 31 31 31 31 30 29
Days > 0.070 0 000 0 00000
13.916.2
14.8
21.0 19.0
10.4
10.3
12.2
13.4
16.8
19.4
24.0
26.2
23.6
21.2
25.4 25.8
25.7
21.9
15.3
15.6
22.0
15.3
18.3
13.0
21.2
25.3
27.2
27.8
22.7
24.4
-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
0.02
0.04
0.06
0.08
0.1
0.12
12345678910111213141516171819202122232425262728293031
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Days
Highest 8-hr Ozone Concentration & Daily Maximum Temperature May 2024
Price #2 Roosevelt Vernal Exceed.TM
P2 RS V4
Arith Mean .054 .053 .050
8 -hr. Ozone 4th Max .059 .060 .058
Days of Data 31 31 31
Days > 0.070 000
8.4
11.9
12.3
21.2
17.8
10.0
7.7
7.7
15.1
19.2
22.623.2
22.5
19.8 21.4
23.1
22.1
22.2
17.915.2
15.2
18.7
11.5
18.9
14.6
19.6
24.2
27.8
20.7
18.8
23.2
-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
0.00
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.10
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 May 2024
Smithfield Exceed.TM
SM
Arith Mean .045
8 -hr. Ozone 4th Max .052
Days of Data 31
Days > 0.070 0
11.4
16.3
13.5
23.4
18.3
10.3
8.1
10.4
13.5
17.7
19.0
23.1
26.1
22.3
20.7
24.3 25.4
25.7
22.6
13.7
15.6
22.5
13.6
19.0
13.7
21.6
26.0
29.227.7
21.0
25.3
-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
0.01
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 May 2024
Lindon Spanish Fork Exceed.TM
LN SF
Arith Mean .052 .051
8 -hr. Ozone 4th Max .059 .058
Days of Data 31 31
Days > 0.070 00
24.8 26.7
27.3
20.819.3
24.2
18.9
21.9
23.5
22.9
29.5
31.0 30.7
29.7 30.4 32.2 31.6
30.2
26.8
24.1
27.2
27.4
29.026.3
29.9 32.4
33.4 32.5 32.7
34.2
-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 May 2024
Enoch Hurricane Moab Exceed.TM
EN HC M7
Arith Mean .052 .055 .055
8 -hr. Ozone 4th Max .058 .062 .060
Days of Data 31 31 31
Days > 0.070 000
12.2
17.0
14.7
24.6
20.0
12.0
9.1
11.1
17.2 19.3
21.7
25.7
27.3 23.6 23.2
26.5
26.4
26.0
21.8
14.9
18.1
24.4
15.0
21.1
15.9
23.2
26.4
31.3
25.3
22.1
25.6
-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 May 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 .050 .048
8 -hr. Ozone 4th Max .058 .057
Days of Data 31 31
Days > 0.070 00
8.4
11.9
12.3
21.2
17.8
10.0
7.7
7.7
15.1
19.2
22.6
23.2 22.5 19.8
21.4 23.1 22.1
22.2
17.9
15.2
15.2 18.7
11.5
18.9
14.6
19.6
24.2
27.8
20.7 18.8
23.2
-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 May 2024
Brigham city Exceed.TM
BG
Arith Mean .049
8 -hr. Ozone 4th Max .055
Days of Data 31
Days > 0.070 0
28.9
29.1
24.1
26.9
30.7
34.8
32.2
32.9
34.4
29.9
33.8
36.1 36.4
34.231.0
26.4
22.9
19.9
25.2
31.0
32.4
36.2
37.4
36.0
36.5
34.2
31.9
29.2
36.0 36.1
-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
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Days
Highest 8-hr Ozone Concentration & Daily Maximum Temperature Jun 2024
Bountiful Copperview Erda Herriman #3 HV Hawthorne Near Road Red butte Rose Park Environmental Quality Exceed.TM
*
*Environmental Quality (EQ) previously named Technical Support Center (TSC)
** Controlling Monitor
**
BV CV ED H3 HV HW NR RB RP EQ
Arith Mean .056 .056 .053 .051 .053 .054 .053 .056 .056 .054
8 -hr. Ozone 4th Max .065 .066 .062 .060 .063 .063 .061 .064 .064 .064
Days of Data 29 30 30 30 30 30 30 30 30 30
Days > 0.070 1 200 0 11111
25.8
26.5
24.7
26.0
30.6
31.6
29.9
30.8
30.6 30.3
31.3
33.8 34.6
28.030.9
30.6
29.8
20.4
27.1
31.2
26.7 29.0
32.9 33.1
33.1
32.2
29.3 30.0
30.4
32.7
-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
0
0.02
0.04
0.06
0.08
0.1
0.12
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Days
Highest 8-hr Ozone Concentration & Daily Maximum Temperature Jun 2024
Price #2 Roosevelt Vernal Exceed.TM
P2 RS V4
Arith Mean .052 .054 .051
8 -hr. Ozone 4th Max .057 .059 .056
Days of Data 30 30 30
Days > 0.070 000
26.3
24.4
19.2
22.0
27.8
31.7
29.5
29.8
31.6
27.3
29.2
31.8 33.0 31.2
26.6 23.6
17.8
17.8
24.8
28.6 29.7
32.3 34.2 32.7 33.8
31.2
27.6 25.8
33.0 33.0
-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
0.00
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.10
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 Jun 2024
Smithfield Exceed.TM
SM
Arith Mean .049
8 -hr. Ozone 4th Max .057
Days of Data 30
Days > 0.070 0
29.1 27.3
24.1 23.4
29.6
33.2
31.7
31.2
33.5
29.3
32.0
34.8
34.6 32.4
30.3
27.6
24.1
20.5
24.7
32.1 30.6
34.3 35.1
34.9 35.4
33.4
31.3
29.4
34.4 34.2
-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
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 Jun 2024
Lindon Spanish Fork Exceed.TM
LN SF
Arith Mean .055 .054
8 -hr. Ozone 4th Max .062 .062
Days of Data 30 30
Days > 0.070 10
33.0
32.9
33.7
38.1
40.1
38.1
37.2 35.1 35.2 37.7 38.4
35.4 36.6
37.7
35.2
33.6
29.6 33.0
36.1
37.2
38.0
38.4 38.7
40.0
37.9
37.9 37.0
37.5 38.0
-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
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 Jun 2024
Enoch Hurricane Moab Exceed.TM
EN HC M7
Arith Mean .050 .053 .051
8 -hr. Ozone 4th Max .061 .064 .060
Days of Data 30 30 30
Days > 0.070 000
28.9 29.1
24.1
26.9
30.7
34.8
32.2
32.9
34.4
29.9
33.8
36.1 36.4 34.2
31.0
26.4
22.9
19.9
25.2
31.0
32.4
36.2 37.4
36.0 36.5
34.2 31.9
29.2
36.0
36.1
-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 10111213141516171819202122232425262728293031
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Days
Highest 8-hr Ozone Concentration & Daily Maximum Temperature Jun 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 .053 .053
8 -hr. Ozone 4th Max .062 .063
Days of Data 30 30
Days > 0.070 01
26.3
24.4
19.2
22.0
27.8
31.7
29.5
29.8
31.6
27.3 29.2
31.8 33.0 31.2
26.6
23.6
17.8
17.8
24.8
28.6
29.7 32.3
34.2
32.7 33.8
31.2
27.6
25.8
33.0
33.0
-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
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 Jun 2024
Brigham city Exceed.TM
BG
Arith Mean .052
8 -hr. Ozone 4th Max .061
Days of Data 30
Days > 0.070 0
27.3
28.6 30.0 29.9
31.7
33.8
31.8
33.4
36.5
39.2
40.139.1 39.1
37.4
33.8 34.4
37.8
37.6
35.8
36.0 36.2
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
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Days
Highest 8-hr Ozone Concentration & Daily Maximum Temperature July 2024
Bountiful Copperview Erda Herriman #3 HV Hawthorne Near Road Red butte Rose Park Environmental Quality Exceed.TM
*
*EnvironmentalQuality (EQ) previously named Technical Support Center (TSC)
** Controlling Monitor
**
O3 Jul 2024 BV CV ED H3 HV HW NR RB RP EQ
Arith Mean .064 .065 .061 .058 .061 .062 .062 .065 .064 .062
8 -hr. Ozone 4th Max .070 .074 .066 .065 .066 .071 .068 .073 .073 .071
Days of Data 21 21 21 21 21 21 21 21 21 21
Days > 0.070 3620 142 7 6 4
29.7
27.6
29.4
29.7
29.4
31.4
30.7 29.1
32.8
34.1
36.3
34.5 34.5 33.5
30.7
30.4 31.1
31.1
32.3
31.8 30.8
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
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Days
Highest 8-hr Ozone Concentration & Daily Maximum Temperature July 2024
Price #2 Roosevelt Vernal Exceed.TM
P2 RS V4
Arith Mean .059 .060 .058
8 -hr. Ozone 4th Max .063 .065 .063
Days of Data 21 21 21
Days > 0.070 000
26.4
25.4 27.2 27.2
29.3 29.7
29.7
31.9
34.0
36.1
31.3
36.8
35.9
34.0
31.4
33.5
33.8
34.6
33.2
34.6
33.8
-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 July 2024
Smithfield Exceed.TM
SM
Arith Mean .059
8 -hr. Ozone 4th Max .062
Days of Data 16
Days > 0.070 0
27.3
27.4
28.8 28.1
30.6 31.1
29.5
32.2
34.5
37.3
38.2
37.9
37.5 35.8
32.6
33.0
35.2
34.4
33.8 35.1 34.8
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 July 2024
Lindon Spanish Fork Exceed.TM
LN SF
Arith Mean .064 .064
8 -hr. Ozone 4th Max .069 .068
Days of Data 21 21
Days > 0.070 23
37.3
39.2
39.3 39.6
40.8
42.5
40.3
41.9 42.2
42.7
41.2
38.9 38.8
37.8 38.5 39.3
39.5
37.7
39.939.7
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 July 2024
Enoch Hurricane Moab Exceed.TM
EN HC M7
Arith Mean .056 .058 .057
8 -hr. Ozone 4th Max .060 .061 .062
Days of Data 21 21 21
Days > 0.070 000
27.3 28.630.0 29.9
31.7
33.8
31.8
33.4
36.5 39.2 40.139.1 39.1 37.4
33.8 34.4
37.8
37.6
35.836.0
36.2
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 July 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 .062 .066
8 -hr. Ozone 4th Max .070 .074
Days of Data 21 21
Days > 0.070 36
26.4
25.427.2 27.2
29.3 29.7
29.7
31.9
34.0 36.1
31.3
36.8
35.9 34.0
31.4 33.5
33.8
34.6
33.2
34.6
33.8
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 July 2024
Brigham city Exceed.TM
BG
Arith Mean .061
8 -hr. Ozone 4th Max .066
Days of Data 21
Days > 0.070 0