DAQ-2025-003157

DAQE-AN102710007-25

{{$d1 }}

Quinn Mathews
Southern Utah University
351 West University Boulevard
Cedar City, UT 84720
[e-mail]

Dear Mr. Mathews:

Re: Approval Order: Modification to Approval Order DAQE-AN102710005-22 to Add Natural
Gas-Fired Equipment
Project Number: N102710007

The attached Approval Order (AO) is issued pursuant to the Notice of Intent (NOI) received on January
16, 2025. Southern Utah University must comply with the requirements of this AO, all applicable state
requirements (R307), and Federal Standards.

The project engineer for this action is Mr. Enqiang He, who can be contacted at [phone] or
[e-mail]. Future correspondence on this AO should include the engineer's name as well as the
DAQE number shown on the upper right-hand corner of this letter. No public comments were received on
this action.

Sincerely,

{{$s }}

Bryce C. Bird
Director

BCB:EH:jg

cc: Southwest Utah Public Health Department
EPA Region 8

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

SPENCER J. COX
Governor
DEIDRE HENDERSON
Lieutenant Governor

Department of
Environmental Quality

Tim Davis
Executive Director

DIVISION OF AIR QUALITY
Bryce C. Bird
Director

June 25, 2025

STATE OF UTAH
Department of Environmental Quality
Division of Air Quality

{{#s=Sig_es_:signer1:signature}}
{{#d1=date1_es_:signer1:date:format(date, "mmmm d, yyyy")}}
{{#d2=date1_es_:signer1:date:format(date, "mmmm d, yyyy"):align(center)}}

APPROVAL ORDER
DAQE-AN102710007-25
Modification to Approval Order DAQE-AN102710005-22
to Add Natural Gas-Fired Equipment

Prepared By
Mr. Enqiang He, Engineer
[phone]
[e-mail]

Issued to
Southern Utah University - Cedar City Campus

Issued On
{{$d2 }}

Issued By

{{$s }}

Bryce C. Bird
Director
Division of Air Quality

June 25, 2025
TABLE OF CONTENTS

TITLE/SIGNATURE PAGE ....................................................................................................... 1
GENERAL INFORMATION ...................................................................................................... 3
CONTACT/LOCATION INFORMATION ............................................................................... 3
SOURCE INFORMATION ........................................................................................................ 3
General Description ................................................................................................................ 3
NSR Classification .................................................................................................................. 3
Source Classification .............................................................................................................. 3
Applicable Federal Standards ................................................................................................. 3
Project Description.................................................................................................................. 4
SUMMARY OF EMISSIONS .................................................................................................... 4
SECTION I: GENERAL PROVISIONS .................................................................................... 4
SECTION II: PERMITTED EQUIPMENT .............................................................................. 5
SECTION II: SPECIAL PROVISIONS ..................................................................................... 7
PERMIT HISTORY ................................................................................................................... 10
ACRONYMS ............................................................................................................................... 11

DAQE-AN102710007-25
Page 3

GENERAL INFORMATION

CONTACT/LOCATION INFORMATION

Owner Name Source Name
Southern Utah University Southern Utah University - Cedar City Campus

Mailing Address Physical Address
351 West University Boulevard 385 South 1275 West
Cedar City, UT 84720 Cedar City, UT 84720

Source Contact UTM Coordinates
Name: Quinn Mathews 317,343 m Easting
Phone: [phone],171,910 m Northing
Email: [e-mail] Datum NAD83
UTM Zone 12
SIC code 8221 (Colleges, Universities, & Professional Schools)

SOURCE INFORMATION
General Description
The Southern Utah University campus (SUU), located in Cedar City, provides educational opportunities
and has emissions associated with various classes and campus utilities. A central heating plant is operated
to provide heating to the facility along with satellite boilers located throughout the campus. Emergency
generators are located at on-site buildings to provide backup power. Paint booths located on campus are
used for maintenance, educational, and festival operations.

NSR Classification
Minor Modification at Minor Source

Source Classification
Located in Attainment Area
Iron County
Airs Source Size: B

Applicable Federal Standards
NSPS (Part 60), A: General Provisions
NSPS (Part 60), Dc: Standards of Performance for Small Industrial-Commercial-Institutional
Steam Generating Units
NSPS (Part 60), IIII: Standards of Performance for Stationary Compression Ignition Internal
Combustion Engines
NSPS (Part 60), JJJJ: Standards of Performance for Stationary Spark Ignition Internal
Combustion Engines
MACT (Part 63), A: General Provisions
DAQE-AN102710007-25
Page 4

MACT (Part 63), ZZZZ: National Emissions Standards for Hazardous Air Pollutants for
Stationary Reciprocating Internal Combustion Engines

Project Description
SUU has requested a modification to AO DAQE-AN102710005-22 to add the following equipment:

1. Two (2) natural gas-fired boilers, each rated at 1.7 MMBtu/hr, and
2. One (1) natural gas-fired water heater rated at 0.12 MMBtu/hr.

The new natural gas-fired equipment will be installed at the new music building. The sitewide emissions
are updated to reflect the additions.

SUMMARY OF EMISSIONS

The emissions listed below are an estimate of the total potential emissions from the source. Some
rounding of emissions is possible.

Criteria Pollutant Change (TPY) Total (TPY)
Ammonia 0.05 0.97
CO2 Equivalent 1806 34994.00
Carbon Monoxide 1.25 28.76
Nitrogen Oxides 0.60 24.26
Particulate Matter - PM10 0.11 16.78
Particulate Matter - PM2.5 0.11 16.77
Sulfur Dioxide 0.01 1.01
Volatile Organic Compounds 0.08 2.90

Hazardous Air Pollutant Change (lbs/yr) Total (lbs/yr)
Benzene (Including Benzene From Gasoline) (CAS #71432) 0 2
Formaldehyde (CAS #50000) 2 47
Generic HAPs (CAS #GHAPS) 0 20
Hexane (CAS #110543) 60 1142
Methyl Chloride (Chloromethane) (CAS #74873) 0 20
Methylene Chloride (Dichloromethane) (CAS #75092) 0 20
Toluene (CAS #108883) 0 59
Xylenes (Isomers And Mixture) (CAS #1330207) 0 17
Change (TPY) Total (TPY)
Total HAPs 0.03 0.66

SECTION I: GENERAL PROVISIONS

I.1 All definitions, terms, abbreviations, and references used in this AO conform to those used in the UAC R307 and 40 CFR. Unless noted otherwise, references cited in these AO conditions refer to those rules. [R307-101]
DAQE-AN102710007-25
Page 5

I.2 The limits set forth in this AO shall not be exceeded without prior approval. [R307-401]
I.3 Modifications to the equipment or processes approved by this AO that could affect the emissions covered by this AO must be reviewed and approved. [R307-401-1]
I.4 All records referenced in this AO or in other applicable rules, which are required to be kept by the owner/operator, shall be made available to the Director or Director's representative upon request, and the records shall include the two-year period prior to the date of the request. Unless otherwise specified in this AO or in other applicable state and federal rules, records shall be kept for a minimum of two (2) years. [R307-401-8] I.5 At all times, including periods of startup, shutdown, and malfunction, owners and operators
shall, to the extent practicable, maintain and operate any equipment approved under this AO, including associated air pollution control equipment, in a manner consistent with good air pollution control practice for minimizing emissions. Determination of whether acceptable
operating and maintenance procedures are being used will be based on information available to the Director which may include, but is not limited to, monitoring results, opacity observations,
review of operating and maintenance procedures, and inspection of the source. All maintenance
performed on equipment authorized by this AO shall be recorded. [R307-401-4]
I.6 The owner/operator shall comply with UAC R307-107. General Requirements: Breakdowns. [R307-107] I.7 The owner/operator shall comply with UAC R307-150 Series. Emission Inventories.
[R307-150]

SECTION II: PERMITTED EQUIPMENT
II.A THE APPROVED EQUIPMENT
II.A.1 Southern Utah University Cedar City Campus II.A.2 CHP Boiler #1 Fuel: Natural Gas and ultra-low sulfur diesel (ULSD) Max. Heat Input: 29.1 MMBtu/hr Controls: Low NOx burner and induced flue gas recirculation NSPS Applicability: Subpart Dc
II.A.3 CHP Boiler #2 Fuel: Natural Gas and ULSD Max. Heat Input: 46.2 MMBtu/hr NSPS Applicability: Subpart Dc II.A.4 CHP Boiler #3 Fuel: Natural Gas and ULSD Max. Heat Input: 44.6 MMBtu/hr Burner Rating: Ultra-low NOx (9 ppmvd) NSPS Applicability: Subpart Dc
DAQE-AN102710007-25
Page 6

II.A.5 One (1) Emergency Generator Engine Fuel: Natural Gas Engine Rating: 60 kW NSPS Applicability: Subpart JJJJ MACT Applicability: Subpart ZZZZ II.A.6 One (1) Emergency Generator Engine (Heat Plant) Fuel: ULSD
Engine Rating: 670.51 HP NSPS Applicability: Subpart IIII MACT Applicability: Subpart ZZZZ

II.A.7 Various Small Emergency Generator Engines Fuel: ULSD Max. Engine Rating: <600 hp Each Total Combined Rating: 2,318 hp NSPS Applicability: Subpart IIII *Various applicability MACT Applicability: Subpart ZZZZ II.A.8 Shakespeare Festival Paint Booth
Filter Efficiency Rating: 99.9%
Rating: 1,600 scfm
II.A.9 Campus Maintenance Paint Booth Filter Efficiency Rating: 99.9% Rating: 16,800 scfm
II.A.10 Engineering and Technology Baghouse
Filter Efficiency Rating: 92% Rating: 700 scfm

II.A.11 Repair Shop Baghouse Filter Efficiency Rating: 99.9% Rating: 2,800 scfm
II.A.12 Various Heaters and Boilers Rating: <5 MMBtu/hr Each
Fuel: Natural Gas

II.A.13 Parts Washers

DAQE-AN102710007-25
Page 7

SECTION II: SPECIAL PROVISIONS
II.B REQUIREMENTS AND LIMITATIONS

II.B.1 Site-Wide Requirements
II.B.1.a The owner/operator shall not allow visible emissions to exceed the following opacities:

A. Natural gas-fired boilers and heaters -10%

B. Fuel oil-fired boilers - 20%

C. Baghouses - 10%

D. Diesel-fired engines - 20%

E. Natural gas-fired engines - 10%

F. Paint booths - 10%

G. All other points - 20%.

[R307-401-8]

II.B.1.a.1 Opacity observations of emissions from stationary sources shall be conducted in accordance with 40 CFR 60, Appendix A, Method 9. [R307-401-8]
II.B.1.b The owner/operator shall not exceed 4,320 hours of operation per baghouse per rolling 12-month
total. [R307-401-8]

II.B.1.b.1 To determine compliance with a rolling 12-month total for each baghouse, the owner/operator shall: A. Identify the baghouse B. Record the dates C. Record the duration of baghouse operation in hours D. Calculate a new 12-month total by the 20th day of each month using data from the previous 12 months E. Keep the records daily for all periods when the facility is in operation. [R307-401-8]
II.B.2 Boiler Requirements
II.B.2.a The stack height for boilers CHP Boilers #1, #2, and #3 shall be no less than 41.77 feet above ground level and 23.25 feet above the roof each. [R307-401-8]
II.B.2.b The owner/operator shall operate each boiler using natural gas as a primary fuel and #2 diesel
fuel oil as a backup fuel during periods of gas curtailment, gas supply interruption, start-ups, or
for periodic testing, maintenance, or operator training on liquid fuel. [R307-401-8]
II.B.2.c The owner/operator shall not exceed a combined total of 48 hours per rolling 12-month period for periodic testing, maintenance, and operator training on liquid fuels for each boiler. [R307-401-8]
DAQE-AN102710007-25
Page 8

II.B.2.d The owner/operator shall limit boiler usage to the following: A. CHP Boiler #1 shall not exceed 6,600 hours of operation per rolling 12-month period B. CHP Boilers #2 and #3 shall not exceed shall not exceed 9,360 hours of operation combined per rolling 12-month period. [R307-401-8] II.B.2.d.1 To determine compliance with a rolling 12-month total for each boiler specified in II.B.2.d, the owner/operator shall calculate a new 12-month total by the 20th day of each month using data
from the previous 12 months. Daily records shall include: A. Hourly usage of each boiler
B. Type of fuel used in each boiler.

[R307-401-8]
II.B.3 VOC & HAP Requirements
II.B.3.a The owner/operator shall not emit more than the following from evaporative sources (painting,
printing, coating, and/or cleaning) on site:
0.98 tons per rolling 12-month period of VOCs
0.39 tons per rolling 12-month period of all HAPs combined.
[R307-401-8]

II.B.3.a.1 The owner/operator shall calculate a new 12-month total by the 20th day of each month using data from the previous 12 months. The owner/operator shall use a mass-balance method to calculate emissions from evaporative sources. The owner/operator may use the following equations with applicable units to comply with the mass-balance method: VOCs = [% VOCs by Weight/100] x [Density] x [Volume Consumed] HAP = [% HAP by Weight/100] x [Density] x [Volume Consumed] [R307-401-8]
II.B.3.a.2 The owner/operator shall use a mass-balance method to quantify any amount of VOCs and HAPs
reclaimed. The owner/operator shall subtract the amount of VOCs and HAPs reclaimed from the quantities calculated above to provide the monthly total emissions of VOCs and HAPs.
[R307-401-8]

DAQE-AN102710007-25
Page 9

II.B.3.a.3 The owner/operator shall keep records each month of the following: A. The name (as per SDS) of the VOC- and HAP-emitting material B. The maximum percent by weight of VOCs and each HAP in each material used C. The density of each material used D. The volume of each VOC- and HAP-emitting material used E. The amount of VOCs and the amount of each HAP emitted from each material F. The amount of VOCs and the amount of each HAP reclaimed and/or controlled from each material G. The total amount of VOCs, the total amount of each HAP, and the total amount of all HAPs combined emitted from all materials (in tons). [R307-401-8]
II.B.4 Emergency Engine Requirements
II.B.4.a The owner/operator shall only conduct maintenance or performance tests on the emergency engines in the Sharwan Smith Student Center, Science Center, and Heat Plant buildings between the hours of 6:00 am and 6:00 pm. [R307-401-8] II.B.4.b The owner/operator shall only conduct maintenance or performance tests on the emergency
engines in the ELC building between the hours of 6:00 pm and 9:00 pm. [R307-401-8]

II.B.4.c The owner/operator shall only conduct maintenance or performance tests on one (1) emergency engine at a time. [R307-401-8]
II.B.4.d The owner/operator shall not exceed one (1) maintenance or performance test per month for each emergency engine. [R307-401-8]

II.B.4.e The owner/operator shall not operate each emergency engine on site for more than 100 hours per rolling 12-month period during non-emergency situations. There is no time limit on the use of the engines during emergencies. [R307-401-8, 40 CFR 63 Subpart ZZZZ]
II.B.4.e.1 To determine compliance with a rolling 12-month total, the owner/operator shall calculate a new 12-month total by the 20th day of each month using data from the previous 12 months. Records
documenting the operation of each emergency engine shall be kept in a log and shall include the
following:
A. The date and time the emergency engine was used

B. The duration of operation in hours

C. The reason for the emergency engine usage.

[40 CFR 63 Subpart ZZZZ, R307-401-8]

II.B.4.e.2 To determine the duration of operation, the owner/operator shall install a non-resettable hour meter for each emergency engine. [R307-401-8, 40 CFR 63 Subpart ZZZZ]
II.B.5 Diesel Fuel Requirement
II.B.5.a The owner/operator shall only combust diesel fuel that meets the definition of ULSD, which has a sulfur content of 15 ppm or less. [R307-401-8]
DAQE-AN102710007-25
Page 10

II.B.5.a.1 To demonstrate compliance with the ULSD fuel requirement, the owner/operator shall maintain records of diesel fuel purchase invoices or obtain certification of sulfur content from the diesel fuel supplier. The diesel fuel purchase invoices shall indicate that the diesel fuel meets the ULSD requirements. [R307-401-8]

PERMIT HISTORY

This Approval Order shall supersede (if a modification) or will be based on the following documents: Supersedes AO DAQE-AN102710005-22 dated October 24, 2022 Incorporates NOI dated January 16, 2025 Incorporates Additional information dated February 5, 2025 Incorporates Additional information dated February 10, 2025 Incorporates Additional information dated April 2, 2025

DAQE-AN102710007-25
Page 11

ACRONYMS

The following lists commonly used acronyms and associated translations as they apply to this document:

40 CFR Title 40 of the Code of Federal Regulations
AO Approval Order
BACT Best Available Control Technology
CAA Clean Air Act
CAAA Clean Air Act Amendments
CDS Classification Data System (used by Environmental Protection Agency to classify
sources by size/type)
CEM Continuous emissions monitor
CEMS Continuous emissions monitoring system
CFR Code of Federal Regulations
CMS Continuous monitoring system
CO Carbon monoxide
CO2 Carbon Dioxide
CO2e Carbon Dioxide Equivalent - Title 40 of the Code of Federal Regulations Part 98,
Subpart A, Table A-1
COM Continuous opacity monitor
DAQ/UDAQ Division of Air Quality
DAQE This is a document tracking code for internal Division of Air Quality use
EPA Environmental Protection Agency
FDCP Fugitive dust control plan
GHG Greenhouse Gas(es) - Title 40 of the Code of Federal Regulations 52.21 (b)(49)(i)
GWP Global Warming Potential - Title 40 of the Code of Federal Regulations Part 86.1818-
12(a)
HAP or HAPs Hazardous air pollutant(s)
ITA Intent to Approve
LB/YR Pounds per year MACT Maximum Achievable Control Technology MMBTU Million British Thermal Units NAA Nonattainment Area NAAQS National Ambient Air Quality Standards NESHAP National Emission Standards for Hazardous Air Pollutants NOI Notice of Intent
NOx Oxides of nitrogen
NSPS New Source Performance Standard
NSR New Source Review
PM10 Particulate matter less than 10 microns in size
PM2.5 Particulate matter less than 2.5 microns in size
PSD Prevention of Significant Deterioration
PTE Potential to Emit
R307 Rules Series 307
R307-401 Rules Series 307 - Section 401
SO2 Sulfur dioxide
Title IV Title IV of the Clean Air Act
Title V Title V of the Clean Air Act
TPY Tons per year
UAC Utah Administrative Code
VOC Volatile organic compounds

DAQE-IN102710007-25

May 15, 2025

Quinn Mathews
Southern Utah University
351 West University Boulevard
Cedar City, UT 84720
[e-mail]

Dear Mr. Mathews:

Re: Intent to Approve: Modification to Approval Order DAQE-AN102710005-22 to Add Natural
Gas-Fired Equipment
Project Number: N102710007

The attached document is the Intent to Approve (ITA) for the above-referenced project. The ITA is
subject to public review. Any comments received shall be considered before an Approval Order (AO) is
issued. The Division of Air Quality is authorized to charge a fee for reimbursement of the actual costs
incurred in the issuance of an AO. An invoice will follow upon issuance of the final AO.

Future correspondence on this ITA should include the engineer's name, Mr. Enqiang He, as well as the
DAQE number as shown on the upper right-hand corner of this letter. Mr. Enqiang He, can be reached at
[phone] or [e-mail], if you have any questions.

Sincerely,

{{$s }}

Alan D. Humpherys, Manager
New Source Review Section

ADH:EH:jg

cc: Southwest Utah Public Health Department
EPA Region 8

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

SPENCER J. COX
Governor
DEIDRE HENDERSON
Lieutenant Governor

Department of
Environmental Quality

Tim Davis
Executive Director

DIVISION OF AIR QUALITY
Bryce C. Bird
Director

STATE OF UTAH
Department of Environmental Quality
Division of Air Quality

INTENT TO APPROVE
DAQE-IN102710007-25
Modification to Approval Order DAQE-AN102710005-22 to Add
Natural Gas-Fired Equipment

Prepared By
Mr. Enqiang He, Engineer
[phone]
[e-mail]

Issued to
Southern Utah University - Cedar City Campus

Issued On
May 15, 2025

{{$s }}

New Source Review Section Manager
Alan D. Humpherys
{{#s=Sig_es_:signer1:signature}}

TABLE OF CONTENTS

TITLE/SIGNATURE PAGE ....................................................................................................... 1
GENERAL INFORMATION ...................................................................................................... 3
CONTACT/LOCATION INFORMATION ............................................................................... 3
SOURCE INFORMATION ........................................................................................................ 3
General Description ................................................................................................................ 3
NSR Classification .................................................................................................................. 3
Source Classification .............................................................................................................. 3
Applicable Federal Standards ................................................................................................. 3
Project Description.................................................................................................................. 4
SUMMARY OF EMISSIONS .................................................................................................... 4
PUBLIC NOTICE STATEMENT............................................................................................... 5
SECTION I: GENERAL PROVISIONS .................................................................................... 5
SECTION II: PERMITTED EQUIPMENT .............................................................................. 6
SECTION II: SPECIAL PROVISIONS ..................................................................................... 7
PERMIT HISTORY ................................................................................................................... 10
ACRONYMS ............................................................................................................................... 11

DAQE-IN102710007-25
Page 3

GENERAL INFORMATION

CONTACT/LOCATION INFORMATION

Owner Name Source Name
Southern Utah University Southern Utah University - Cedar City Campus

Mailing Address Physical Address
351 West University Boulevard 385 South 1275 West
Cedar City, UT 84720 Cedar City, UT 84720

Source Contact UTM Coordinates
Name: Quinn Mathews 317,343 m Easting
Phone: [phone],171,910 m Northing
Email: [e-mail] Datum NAD83
UTM Zone 12
SIC code 8221 (Colleges, Universities, & Professional Schools)

SOURCE INFORMATION
General Description
The Southern Utah University campus (SUU), located in Cedar City, provides educational opportunities
and has emissions associated with various classes and campus utilities. A central heating plant is operated
to provide heating to the facility along with satellite boilers located throughout the campus. Emergency
generators are located at on-site buildings to provide backup power. Paint booths located on campus are
used for maintenance, educational, and festival operations.

NSR Classification
Minor Modification at Minor Source

Source Classification
Located in Attainment Area
Iron County
Airs Source Size: B

Applicable Federal Standards
NSPS (Part 60), A: General Provisions
NSPS (Part 60), Dc: Standards of Performance for Small Industrial-Commercial-Institutional
Steam Generating Units
NSPS (Part 60), IIII: Standards of Performance for Stationary Compression Ignition Internal
Combustion Engines
NSPS (Part 60), JJJJ: Standards of Performance for Stationary Spark Ignition Internal
Combustion Engines
DAQE-IN102710007-25
Page 4

MACT (Part 63), A: General Provisions
MACT (Part 63), ZZZZ: National Emissions Standards for Hazardous Air Pollutants for
Stationary Reciprocating Internal Combustion Engines

Project Description
SUU has requested a modification to AO DAQE-AN102710005-22 to add the following equipment:

1. Two (2) natural gas-fired boilers, each rated at 1.7 MMBtu/hr , and
2. One (1) natural gas-fired water heater rated at 0.12 MMBtu/hr.

The new natural gas-fired equipment will be installed at the new music building. The sitewide emissions
are updated to reflect the additions.

SUMMARY OF EMISSIONS

The emissions listed below are an estimate of the total potential emissions from the source. Some
rounding of emissions is possible.

Criteria Pollutant Change (TPY) Total (TPY)
Ammonia 0.05 0.97
CO2 Equivalent 1806 34994.00
Carbon Monoxide 1.25 28.76
Nitrogen Oxides 0.60 24.26
Particulate Matter - PM10 0.11 16.78
Particulate Matter - PM2.5 0.11 16.77
Sulfur Dioxide 0.01 1.01
Volatile Organic Compounds 0.08 2.90

Hazardous Air Pollutant Change (lbs/yr) Total (lbs/yr)
Benzene (Including Benzene From Gasoline) (CAS #71432) 0 2
Formaldehyde (CAS #50000) 2 47
Generic HAPs (CAS #GHAPS) 0 20
Hexane (CAS #110543) 60 1142
Methyl Chloride (Chloromethane) (CAS #74873) 0 20
Methylene Chloride (Dichloromethane) (CAS #75092) 0 20
Toluene (CAS #108883) 0 59
Xylenes (Isomers And Mixture) (CAS #1330207) 0 17
Change (TPY) Total (TPY)
Total HAPs 0.03 0.66

DAQE-IN102710007-25
Page 5

PUBLIC NOTICE STATEMENT
The NOI for the above-referenced project has been evaluated and has been found to be consistent with the requirements of UAC R307. Air pollution producing sources and/or their air control facilities may not be constructed, installed, established, or modified prior to the issuance of an AO by the Director. A 30-day public comment period will be held in accordance with UAC R307-401-7. A notification of the intent to approve will be published in the Daily Spectrum on May 20, 2025. During the public comment period the proposal and the evaluation of its impact on air quality will be available for the public to review and provide comment. If anyone so requests a public hearing within 15 days of publication, it will be held in accordance with UAC R307-401-7. The hearing will be held as close as practicable to the location of the source. Any comments received during the public comment period and the hearing will be evaluated. The proposed conditions of the AO may be changed as a result of the comments received.

SECTION I: GENERAL PROVISIONS

The intent is to issue an air quality AO authorizing the project with the following recommended
conditions and that failure to comply with any of the conditions may constitute a violation of the AO.

I.1 All definitions, terms, abbreviations, and references used in this AO conform to those used in the UAC R307 and 40 CFR. Unless noted otherwise, references cited in these AO conditions refer to those rules. [R307-101] I.2 The limits set forth in this AO shall not be exceeded without prior approval. [R307-401]
I.3 Modifications to the equipment or processes approved by this AO that could affect the emissions covered by this AO must be reviewed and approved. [R307-401-1] I.4 All records referenced in this AO or in other applicable rules, which are required to be kept by the owner/operator, shall be made available to the Director or Director's representative upon request, and the records shall include the two-year period prior to the date of the request. Unless otherwise specified in this AO or in other applicable state and federal rules, records shall be kept for a minimum of two (2) years. [R307-401-8]
I.5 At all times, including periods of startup, shutdown, and malfunction, owners and operators shall, to the extent practicable, maintain and operate any equipment approved under this AO, including associated air pollution control equipment, in a manner consistent with good air pollution control practice for minimizing emissions. Determination of whether acceptable operating and maintenance procedures are being used will be based on information available to the Director which may include, but is not limited to, monitoring results, opacity observations, review of operating and maintenance procedures, and inspection of the source. All maintenance performed on equipment authorized by this AO shall be recorded. [R307-401-4] I.6 The owner/operator shall comply with UAC R307-107. General Requirements: Breakdowns. [R307-107]
I.7 The owner/operator shall comply with UAC R307-150 Series. Emission Inventories. [R307-150]
DAQE-IN102710007-25
Page 6

SECTION II: PERMITTED EQUIPMENT

The intent is to issue an air quality AO authorizing the project with the following recommended
conditions and that failure to comply with any of the conditions may constitute a violation of the AO.
II.A THE APPROVED EQUIPMENT II.A.1 Southern Utah University Cedar City Campus
II.A.2 CHP Boiler #1 Fuel: Natural Gas and ultra-low sulfur diesel (ULSD) Max. Heat Input: 29.1 MMBtu/hr Controls: Low NOx burner and induced flue gas recirculation NSPS Applicability: Subpart Dc II.A.3 CHP Boiler #2 Fuel: Natural Gas and ULSD Max. Heat Input: 46.2 MMBtu/hr NSPS Applicability: Subpart Dc
II.A.4 CHP Boiler #3 Fuel: Natural Gas and ULSD Max. Heat Input: 44.6 MMBtu/hr Burner Rating: Ultra-low NOx (9 ppmvd) NSPS Applicability: Subpart Dc II.A.5 One (1) Emergency Generator Engine Fuel: Natural Gas Engine Rating: 60 kW NSPS Applicability: Subpart JJJJ MACT Applicability: Subpart ZZZZ
II.A.6 One (1) Emergency Generator Engine (Heat Plant) Fuel: ULSD Engine Rating: 670.51 HP NSPS Applicability: Subpart IIII MACT Applicability: Subpart ZZZZ II.A.7 Various Small Emergency Generator Engines Fuel: ULSD Max. Engine Rating: <600 hp Each Total Combined Rating: 2,318 hp
NSPS Applicability: Subpart IIII *Various applicability MACT Applicability: Subpart ZZZZ
II.A.8 Shakespeare Festival Paint Booth Filter Efficiency Rating: 99.9% Rating: 1,600 scfm
II.A.9 Campus Maintenance Paint Booth Filter Efficiency Rating: 99.9% Rating: 16,800 scfm

DAQE-IN102710007-25
Page 7

II.A.10 Engineering and Technology Baghouse Filter Efficiency Rating: 92% Rating: 700 scfm II.A.11 Repair Shop Baghouse
Filter Efficiency Rating: 99.9% Rating: 2,800 scfm
II.A.12 Various Heaters and Boilers Rating: <5 MMBtu/hr Each Fuel: Natural Gas
II.A.13 Parts Washers

SECTION II: SPECIAL PROVISIONS

The intent is to issue an air quality AO authorizing the project with the following recommended
conditions and that failure to comply with any of the conditions may constitute a violation of the AO. II.B REQUIREMENTS AND LIMITATIONS II.B.1 Site-Wide Requirements
II.B.1.a The owner/operator shall not allow visible emissions to exceed the following opacities: A. Natural gas-fired boilers and heaters - 10% B. Fuel oil-fired boilers - 20% C. Baghouses - 10% D. Diesel-fired engines - 20% E. Natural gas-fired engines - 10% F. Paint booths - 10% G. All other points - 20% [R307-401-8] II.B.1.a.1 Opacity observations of emissions from stationary sources shall be conducted in accordance with 40 CFR 60, Appendix A, Method 9. [R307-401-8]
II.B.1.b The owner/operator shall not exceed 4,320 hours of operation per baghouse per rolling 12-month total. [R307-401-8]
DAQE-IN102710007-25
Page 8

II.B.1.b.1 To determine compliance with a rolling 12-month total for each baghouse, the owner/operator shall: A. Identify the baghouse B. Record the dates C. Record the duration of baghouse operation in hours D. Calculate a new 12-month total by the 20th day of each month using data from the previous 12 months E. Keep the records daily for all periods when the facility is in operation. [R307-401-8]
II.B.2 Boiler Requirements
II.B.2.a The stack height for boilers CHP Boilers #1, #2, and #3 shall be no less than 41.77 feet above ground level and 23.25 feet above the roof each. [R307-401-8]
II.B.2.b The owner/operator shall operate each boiler using natural gas as a primary fuel and #2 diesel
fuel oil as a backup fuel during periods of gas curtailment, gas supply interruption, start-ups, or for periodic testing, maintenance, or operator training on liquid fuel. [R307-401-8]

II.B.2.c The owner/operator shall not exceed a combined total of 48 hours per rolling 12-month period for periodic testing, maintenance, and operator training on liquid fuels for each boiler. [R307-401-8]
II.B.2.d The owner/operator shall limit boiler usage to the following:
A. CHP Boiler #1 shall not exceed 6,600 hours of operation per rolling 12-month period
B. CHP Boilers #2 and 3 shall not exceed 9,360 hours of operation combined per rolling
12-month period.
[R307-401-8]

II.B.2.d.1 To determine compliance with a rolling 12-month totals for each boiler specified in II.B.2.d, the owner/operator shall calculate a new 12-month total by the 20th day of each month using data from the previous 12 months. Daily records shall include: A. Hourly usage of each boiler B. Type of fuel used in each boiler. [R307-401-8]
II.B.3 VOC & HAP Requirements
II.B.3.a The owner/operator shall not emit more than the following from evaporative sources (painting, printing, coating, and/or cleaning) on site: 0.98 tons per rolling 12-month period of VOCs 0.39 tons per rolling 12-month period of all HAPs combined. [R307-401-8]
DAQE-IN102710007-25
Page 9

II.B.3.a.1 The owner/operator shall calculate a new 12-month total by the 20th day of each month using data from the previous 12 months. The owner/operator shall use a mass-balance method to calculate emissions from evaporative sources. The owner/operator may use the following equations with applicable units to comply with the mass-balance method: VOCs = [% VOCs by Weight/100] x [Density] x [Volume Consumed] HAP = [% HAP by Weight/100] x [Density] x [Volume Consumed] [R307-401-8]
II.B.3.a.2 The owner/operator shall use a mass-balance method to quantify any amount of VOCs and HAPs reclaimed. The owner/operator shall subtract the amount of VOCs and HAPs reclaimed from the quantities calculated above to provide the monthly total emissions of VOCs and HAPs.
[R307-401-8]
II.B.3.a.3 The owner/operator shall keep records each month of the following: A. The name (as per SDS) of the VOC- and HAP-emitting material B. The maximum percent by weight of VOCs and each HAP in each material used C. The density of each material used D. The volume of each VOC- and HAP-emitting material used E. The amount of VOCs and the amount of each HAP emitted from each material F. The amount of VOCs and the amount of each HAP reclaimed and/or controlled from each material G. The total amount of VOCs, the total amount of each HAP, and the total amount of all HAPs combined emitted from all materials (in tons). [R307-401-8]
II.B.4 Emergency Engine Requirements
II.B.4.a The owner/operator shall only conduct maintenance or performance tests on the emergency engines in the Sharwan Smith Student Center, Science Center, and Heat Plant buildings between the hours of 6:00 am and 6:00 pm. [R307-401-8] II.B.4.b The owner/operator shall only conduct maintenance or performance tests on the emergency
engines in the ELC building between the hours of 6:00 pm and 9:00 pm. [R307-401-8]

II.B.4.c The owner/operator shall only conduct maintenance or performance tests on one (1) emergency engine at a time. [R307-401-8]
II.B.4.d The owner/operator shall not exceed one (1) maintenance or performance test per month for
each emergency engine. [R307-401-8]

II.B.4.e The owner/operator shall not operate each emergency engine on site for more than 100 hours per rolling 12-month period during non-emergency situations. There is no time limit on the use of the engines during emergencies. [R307-401-8, 40 CFR 63 Subpart ZZZZ]
DAQE-IN102710007-25
Page 10

II.B.4.e.1 To determine compliance with a rolling 12-month total, the owner/operator shall calculate a new 12-month total by the 20th day of each month using data from the previous 12 months. Records documenting the operation of each emergency engine shall be kept in a log and shall include the following: A. The date and time the emergency engine was used B. The duration of operation in hours C. The reason for the emergency engine usage. [40 CFR 63 Subpart ZZZZ, R307-401-8] II.B.4.e.2 To determine the duration of operation, the owner/operator shall install a non-resettable hour
meter for each emergency engine. [R307-401-8, 40 CFR 63 Subpart ZZZZ]
II.B.5 Diesel Fuel Requirement
II.B.5.a The owner/operator shall only combust diesel fuel that meets the definition of ultra-low sulfur
diesel (ULSD), which has a sulfur content of 15 ppm or less. [R307-401-8]
II.B.5.a.1 To demonstrate compliance with the ULSD fuel requirement, the owner/operator shall maintain records of diesel fuel purchase invoices or obtain certification of sulfur content from the diesel fuel supplier. The diesel fuel purchase invoices shall indicate that the diesel fuel meets the ULSD requirements. [R307-401-8]

PERMIT HISTORY

This Approval Order shall supersede (if a modification) or will be based on the following documents: Supersedes AO DAQE-AN102710005-22 dated October 24, 2022 Incorporates NOI dated January 16, 2025 Incorporates Additional information dated February 5, 2025 Incorporates Additional information dated February 10, 2025 Incorporates Additional information dated April 2, 2025

DAQE-IN102710007-25
Page 11

ACRONYMS

The following lists commonly used acronyms and associated translations as they apply to this document:

40 CFR Title 40 of the Code of Federal Regulations
AO Approval Order
BACT Best Available Control Technology
CAA Clean Air Act
CAAA Clean Air Act Amendments
CDS Classification Data System (used by Environmental Protection Agency to classify
sources by size/type)
CEM Continuous emissions monitor
CEMS Continuous emissions monitoring system
CFR Code of Federal Regulations
CMS Continuous monitoring system
CO Carbon monoxide
CO2 Carbon Dioxide
CO2e Carbon Dioxide Equivalent - Title 40 of the Code of Federal Regulations Part 98,
Subpart A, Table A-1
COM Continuous opacity monitor
DAQ/UDAQ Division of Air Quality
DAQE This is a document tracking code for internal Division of Air Quality use
EPA Environmental Protection Agency
FDCP Fugitive dust control plan
GHG Greenhouse Gas(es) - Title 40 of the Code of Federal Regulations 52.21 (b)(49)(i)
GWP Global Warming Potential - Title 40 of the Code of Federal Regulations Part 86.1818-
12(a)
HAP or HAPs Hazardous air pollutant(s)
ITA Intent to Approve
LB/YR Pounds per year MACT Maximum Achievable Control Technology MMBTU Million British Thermal Units NAA Nonattainment Area NAAQS National Ambient Air Quality Standards NESHAP National Emission Standards for Hazardous Air Pollutants NOI Notice of Intent
NOx Oxides of nitrogen
NSPS New Source Performance Standard
NSR New Source Review
PM10 Particulate matter less than 10 microns in size
PM2.5 Particulate matter less than 2.5 microns in size
PSD Prevention of Significant Deterioration
PTE Potential to Emit
R307 Rules Series 307
R307-401 Rules Series 307 - Section 401
SO2 Sulfur dioxide
Title IV Title IV of the Clean Air Act
Title V Title V of the Clean Air Act
TPY Tons per year
UAC Utah Administrative Code
VOC Volatile organic compounds

Spectrum
Publication Name:
Spectrum
Publication URL:
www.thespectrum.com/
Publication City and State:
St. George, UT
Publication County:
Washington
Notice Popular Keyword Category:
Notice Keywords:
southern utah
Notice Authentication Number:
202505201126365037296
2273419277
Notice URL:
Back
Notice Publish Date:
Tuesday, May 20, 2025
Notice Content
NOTICE A Notice of Intent for the following project submitted in accordance with R307-401-1, Utah Administrative Code (UAC), has been
received for consideration by the Director: Company Name: Southern Utah University Location: Southern Utah University - Cedar City
Campus – 385 South 1275 West, Cedar City, UT Project Description: The Southern Utah University campus (SUU), located in Cedar City,
provides educational opportunities and has emissions associated with various classes and campus utilities. A central heating plant is operated
to provide heating to the facility along with satellite boilers located throughout the campus. Emergency generators are located at on-site
buildings to provide backup power. Paint booths located on campus are used for maintenance, educational, and festival operations. SUU has
requested a modification to Approval Order DAQE-AN102710005-22 to add two (2) natural gas-fired boilers and one (1) natural gas-fired
water heater. The new natural gas-fired equipment will be installed at the new music building. The sitewide emissions are updated to reflect
the additions. The completed engineering evaluation and air quality impact analysis showed the proposed project meets the requirements of
federal air quality regulations and the State air quality rules. The Director intends to issue an Approval Order pending a 30-day public
comment period. The project proposal, estimate of the effect on local air quality, and draft Approval Order are available for public inspection
and comment at the Utah Division of Air Quality, 195 North 1950 West, Salt Lake City, UT 84116. Written comments received by the Division
at this same address on or before June 19, 2025, will be considered in making the final decision on the approval/disapproval of the proposed
project. Email comments will also be accepted at [e-mail]. If anyone so requests to the Director in writing within 15 days of
publication of this notice, a hearing will be held in accordance with R307-401-7, UAC. Under Section 19-1-301.5, a person who wishes to
challenge a Permit Order may only raise an issue or argument during an adjudicatory proceeding that was raised during the public comment
period and was supported with sufficient information or documentation to enable the Director to fully consider the substance and significance
of the issue. Date of Notice: May 20, 2025 Pub # 11322816 Published May 20, 2025 The Spectrum UPAXLP
Back

DAQE-NN102710007-25

May 15, 2025

Daily Spectrum
Legal Advertising Department
275 E Street
St. George, UT 84770

RE: Legal Notice of Intent to Approve

This letter will confirm the authorization to publish the attached NOTICE in the Daily Spectrum on May
20, 2025.

Please mail the invoice and affidavit of publication to the Utah State Department of Environmental
Quality, Division of Air Quality, P.O. Box 144820, Salt Lake City, Utah 84114-4820. If you have any
questions, contact Jeree Greenwood, who may be reached at [phone].

Sincerely,

{{$s }}

Jeree Greenwood
Office Technician

Enclosure

cc: Iron County
cc: Five County Association of Governments

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

SPENCER J. COX
Governor
DEIDRE HENDERSON
Lieutenant Governor

Department of
Environmental Quality

Tim Davis
Executive Director

DIVISION OF AIR QUALITY
Bryce C. Bird
Director

DAQE-NN102710007-25
Page 2
NOTICE

A Notice of Intent for the following project submitted in accordance with R307-401-1, Utah
Administrative Code (UAC), has been received for consideration by the Director:

Company Name: Southern Utah University
Location: Southern Utah University - Cedar City Campus – 385 South 1275 West, Cedar
City, UT
Project Description: The Southern Utah University campus (SUU), located in Cedar City, provides
educational opportunities and has emissions associated with various classes and
campus utilities. A central heating plant is operated to provide heating to the
facility along with satellite boilers located throughout the campus. Emergency
generators are located at on-site buildings to provide backup power. Paint booths
located on campus are used for maintenance, educational, and festival operations.
SUU has requested a modification to Approval Order DAQE-AN102710005-22
to add two (2) natural gas-fired boilers and one (1) natural gas-fired water heater.
The new natural gas-fired equipment will be installed at the new music building.
The sitewide emissions are updated to reflect the additions.

The completed engineering evaluation and air quality impact analysis showed the proposed project meets
the requirements of federal air quality regulations and the State air quality rules. The Director intends to
issue an Approval Order pending a 30-day public comment period. The project proposal, estimate of the
effect on local air quality, and draft Approval Order are available for public inspection and comment at
the Utah Division of Air Quality, 195 North 1950 West, Salt Lake City, UT 84116. Written comments
received by the Division at this same address on or before June 19, 2025, will be considered in making
the final decision on the approval/disapproval of the proposed project. Email comments will also be
accepted at [e-mail]. If anyone so requests to the Director in writing within 15 days of publication
of this notice, a hearing will be held in accordance with R307-401-7, UAC.

Under Section 19-1-301.5, a person who wishes to challenge a Permit Order may only raise an issue or
argument during an adjudicatory proceeding that was raised during the public comment period and was
supported with sufficient information or documentation to enable the Director to fully consider the
substance and significance of the issue. Date of Notice: May 20, 2025

{{#s=Sig_es_:signer1:signature}}

DAQE-

RN102710007 May 8, 2025 Quinn Mathews
Southern Utah University 351 West University Blvd Cedar City, UT 84720
[e-mail] Dear Quinn Mathews,
Re: Engineer Review: Modification to Approval Order DAQE-AN102710005-22 to Add Natural Gas-Fired Equipment Project Number: N102710007 The DAQ requests a company representative review and sign the attached Engineer Review (ER). This ER identifies all applicable elements of the New Source Review permitting program. Southern Utah University should complete this review within 10 business days of receipt. Southern Utah University should contact Mr. Enqiang He at [phone] if there are questions or concerns with the review of the draft permit conditions. Upon resolution of your concerns, please email Mr. Enqiang He at [e-mail] the signed cover letter. Upon receipt of the signed cover letter, the DAQ will prepare an ITA for a 30-day public comment period. At the completion of the comment period, the DAQ will address any comments and will prepare an Approval Order (AO) for signature by the DAQ Director. If Southern Utah University does not respond to this letter within 10 business days, the project will move
forward without source concurrence. If Southern Utah University has concerns that cannot be resolved and the project becomes stagnant, the DAQ Director may issue an Order prohibiting construction. Approval Signature _____________________________________________________________ (Signature & Date)
195 North 1950 West • Salt Lake City, UT
Mailing Address: P.O. Box 144820 • Salt Lake City, UT 84114-4820
Telephone [phone] • Fax [phone] • T.D.D. [phone]
www.deq.utah.gov
Printed on 100% recycled paper
Department of Environmental Quality
Tim Davis Executive Director DIVISION OF AIR QUALITY Bryce C. Bird Director
State of Utah
SPENCER J. COX Governor DEIDRE HENDERSON Lieutenant Governor

Engineer Review N102710007: Southern Utah University- Cedar City Campus May 8, 2025 Page 1
UTAH DIVISION OF AIR QUALITY
ENGINEER REVIEW

SOURCE INFORMATION
Project Number N102710007 Owner Name Southern Utah University Mailing Address 385 South 1275 West
Cedar City, UT 84720 Source Name Southern Utah University- Cedar City Campus
Source Location 385 South 1275 West Cedar City, UT 84720
UTM Projection 317,343 m Easting, 4,171,910 m Northing UTM Datum NAD83 UTM Zone UTM Zone 12 SIC Code 8221 (Colleges, Universities, & Professional Schools) Source Contact Quinn Mathews Phone Number [phone] Email [e-mail] Billing Contact Quinn Mathews Phone Number 435-586-7888
Email [e-mail] Project Engineer Mr. Enqiang He, Engineer
Phone Number [phone] Email [e-mail]
Notice of Intent (NOI) Submitted January 16, 2025 Date of Accepted Application April 2, 2025

Engineer Review N102710007: Southern Utah University- Cedar City Campus May 8, 2025 Page 2
SOURCE DESCRIPTION General Description
The Southern Utah University campus (SUU) located in Cedar City provides educational opportunities and has emissions associated with various classes and campus utilities. A central heating plant is operated to provide heating to the facility along with satellite boilers located
throughout the campus. Emergency generators are located at on-site buildings to provide back-up power. Paint booths located on campus are used for maintenance, educational, and festival operations. NSR Classification: Minor Modification at Minor Source Source Classification Located in Attainment Area Iron County Airs Source Size: B
Applicable Federal Standards NSPS (Part 60), A: General Provisions
NSPS (Part 60), Dc: Standards of Performance for Small Industrial-Commercial-Institutional Steam Generating Units NSPS (Part 60), IIII: Standards of Performance for Stationary Compression Ignition Internal
Combustion Engines NSPS (Part 60), JJJJ: Standards of Performance for Stationary Spark Ignition Internal Combustion Engines MACT (Part 63), A: General Provisions MACT (Part 63), ZZZZ: National Emissions Standards for Hazardous Air Pollutants for Stationary Reciprocating Internal Combustion Engines
Project Proposal Modification to Approval Order DAQE-AN102710005-22 to Add Natural Gas-Fired Equipment Project Description SUU has requested a modification to AO DAQE-AN102710005-22 to add the following equipment:
1. Two (2) natural gas-fired boilers each rated at 1.7 MMBtu/hr, and 2. One (1) natural gas-fired water heater rated at 0.12 MMBtu/hr.
The new natural gas-fired equipment will be installed at the new music building. The sitewide emissions are updated to reflect the additions. EMISSION IMPACT ANALYSIS Emission increases of criteria pollutants and HAPs are below their respective thresholds per
R307-410-4 and R307-410-5; therefore, modeling is not required for this modification.

Engineer Review N102710007: Southern Utah University- Cedar City Campus May 8, 2025 Page 3
SUMMARY OF EMISSIONS
The emissions listed below are an estimate of the total potential emissions from the source. Some rounding of emissions is possible.
Criteria Pollutant Change (TPY) Total (TPY) Ammonia 0.05 0.97 CO2 Equivalent 1806 34994
Carbon Monoxide 1.25 28.76
Nitrogen Oxides 0.60 24.26
Particulate Matter - PM10 0.11 16.78
Particulate Matter - PM2.5 0.11 16.77
Sulfur Dioxide 0.01 1.01 Volatile Organic Compounds 0.08 2.90 Hazardous Air Pollutant Change (lbs/yr) Total (lbs/yr)
Benzene (Including Benzene From Gasoline) (CAS #71432) 0 2
Formaldehyde (CAS #50000) 2 47
Generic HAPs (CAS #GHAPS) 0 20
Hexane (CAS #110543) 60 1142 Methyl Chloride (Chloromethane) (CAS #74873) 0 20 Methylene Chloride (Dichloromethane) (CAS #75092) 0 20
Toluene (CAS #108883) 0 59
Xylenes (Isomers And Mixture) (CAS #1330207) 0 17
Change (TPY) Total (TPY)
Total HAPs 0.03 0.66 Note: Change in emissions indicates the difference between previous AO and proposed modification.

Engineer Review N102710007: Southern Utah University- Cedar City Campus May 8, 2025 Page 4
Review of BACT for New/Modified Emission Units 1. BACT review regarding new boilers and water heater
The new natural gas-fired boilers and heater are each rated at less than 5 MMBtu/hr. The equipment is exempt under R307-401-10(1); therefore, BACT analysis is not required. [Last updated January 22, 2025]

SECTION I: GENERAL PROVISIONS
The intent is to issue an air quality AO authorizing the project with the following recommended conditions and that failure to comply with any of the conditions may constitute a violation of the AO. (New or Modified conditions are indicated as “New” in the Outline Label): I.1 All definitions, terms, abbreviations, and references used in this AO conform to those used in the UAC R307 and 40 CFR. Unless noted otherwise, references cited in these AO conditions
refer to those rules. [R307-101] I.2 The limits set forth in this AO shall not be exceeded without prior approval. [R307-401]
I.3 Modifications to the equipment or processes approved by this AO that could affect the emissions covered by this AO must be reviewed and approved. [R307-401-1]
I.4 All records referenced in this AO or in other applicable rules, which are required to be kept by the owner/operator, shall be made available to the Director or Director's representative upon request, and the records shall include the two-year period prior to the date of the request. Unless otherwise specified in this AO or in other applicable state and federal rules, records shall be kept for a minimum of two (2) years. [R307-401-8]
I.5 At all times, including periods of startup, shutdown, and malfunction, owners and operators
shall, to the extent practicable, maintain and operate any equipment approved under this AO, including associated air pollution control equipment, in a manner consistent with good air pollution control practice for minimizing emissions. Determination of whether acceptable
operating and maintenance procedures are being used will be based on information available to the Director which may include, but is not limited to, monitoring results, opacity observations, review of operating and maintenance procedures, and inspection of the source.
All maintenance performed on equipment authorized by this AO shall be recorded. [R307-401-4]
I.6 The owner/operator shall comply with UAC R307-107. General Requirements: Breakdowns.
[R307-107] I.7 The owner/operator shall comply with UAC R307-150 Series. Emission Inventories. [R307-150]

Engineer Review N102710007: Southern Utah University- Cedar City Campus May 8, 2025 Page 5
SECTION II: PERMITTED EQUIPMENT The intent is to issue an air quality AO authorizing the project with the following recommended conditions and that failure to comply with any of the conditions may constitute a violation of the
AO. (New or Modified conditions are indicated as “New” in the Outline Label): II.A THE APPROVED EQUIPMENT
II.A.1 Southern Utah University Cedar City Campus
II.A.2 CHP Boiler #1 Fuel: Natural Gas and Ultra-Low Sulfur Diesel (ULSD) Max. Heat Input: 29.1 MMBtu/hr Controls: Low NOx burner and induced flue gas recirculation NSPS Applicability: Subpart Dc
II.A.3 CHP Boiler #2
Fuel: Natural Gas and ULSD Max. Heat Input: 46.2 MMBtu/hr NSPS Applicability: Subpart Dc
II.A.4 CHP Boiler #3 Fuel: Natural Gas and ULSD Max. Heat Input: 44.6 MMBtu/hr
Burner Rating: Ultra-low NOx (9 ppmvd) NSPS Applicability: Subpart Dc
II.A.5 One (1) Emergency Generator Engine
Fuel: Natural Gas Engine Rating: 60 kW NSPS Applicability: Subpart JJJJ
MACT Applicability: Subpart ZZZZ II.A.6 One (1) Emergency Generator Engines (Heat Plant) Fuel: ULSD Engine Rating: 670.51 HP NSPS Applicability: Subpart IIII MACT Applicability: Subpart ZZZZ

II.A.7 Various Small Emergency Generator Engines Fuel: ULSD Max. Engine Rating: <600 hp Each Total Combined Rating: 2,318 hp NSPS Applicability: Subpart IIII *Various applicability MACT Applicability: Subpart ZZZZ

II.A.8 Shakespeare Festival Paint Booth
Filter Efficiency Rating: 99.9% Rating: 1,600 scfm

Engineer Review N102710007: Southern Utah University- Cedar City Campus May 8, 2025 Page 6
II.A.9 Campus Maintenance Paint Booth Filter Efficiency Rating: 99.9% Rating: 16,800 scfm

II.A.10 Engineering and Technology Baghouse Filter Efficiency Rating: 92% Rating: 700 scfm
II.A.11 Repair Shop Baghouse
Filter Efficiency Rating: 99.9% Rating: 2,800 scfm
II.A.12 Various Heaters and Boilers Rating: <5 MMBtu/hr Each Fuel: Natural Gas
II.A.13 Parts Washers

SECTION II: SPECIAL PROVISIONS The intent is to issue an air quality AO authorizing the project with the following recommended conditions and that failure to comply with any of the conditions may constitute a violation of the
AO. (New or Modified conditions are indicated as “New” in the Outline Label): II.B REQUIREMENTS AND LIMITATIONS
II.B.1 Site-Wide Requirements
II.B.1.a NEW The owner/operator shall not allow visible emissions to exceed the following opacities:
A. Natural gas-fired boilers and heaters -10% B. Fuel oil-fired boilers -20% C. Baghouses -10% D. Diesel-fired engines -20% E. Natural gas-fired engines - 10% E. Paint booths -10%
G. All other points- 20%.
[R307-401-8]
II.B.1.a.1 Opacity observations of emissions from stationary sources shall be conducted in accordance
with 40 CFR 60, Appendix A, Method 9. [R307-401-8]

Engineer Review N102710007: Southern Utah University- Cedar City Campus May 8, 2025 Page 7
II.B.1.b The owner/operator shall not exceed 4,320 hours of operation per baghouse per rolling 12-month total. [R307-401-8]
II.B.1.b.1 To determine compliance with a rolling 12-month totals for each baghouse, the owner/operator shall: A. Identify the baghouse B. Record the dates C. Record the duration of baghouse operation in hours D. Calculate a new 12-month total by the 20th day of each month using data from the
previous 12 months E. Keep the records daily for all periods when the facility is in operation.
[R307-401-8]
II.B.2 Boiler Requirements
II.B.2.a The stack height for boilers CHP Boilers #1, #2, and #3 shall be no less than 41.77 feet above ground level and 23.25 feet above the roof each. [R307-401-8]

II.B.2.b The owner/operator shall operate each boiler using natural gas as a primary fuel and #2-diesel fuel oil as a backup fuel during periods of gas curtailment, gas supply interruption, start-ups, or for periodic testing, maintenance, or operator training on liquid fuel. [R307-401-8]

II.B.2.c The owner/operator shall not exceed a combined total of 48 hours per rolling 12-month period for periodic testing, maintenance, and operator training on liquid fuels for each boiler. [R307-401-8]
II.B.2.d The owner/operator shall limit boiler usage to the following:
A. CHP Boiler #1 shall not exceed 6,600 hours of operation per rolling 12-month period.
B. CHP Boilers #2 and #3 shall not exceed 9,360 hours of operation combined per
rolling 12-month period. [R307-401-8]

II.B.2.d.1 To determine compliance with a rolling 12-month totals for each boiler specified in II.B.2.d,
the owner/operator shall calculate a new 12-month total by the 20th day of each month using data from the previous 12 months. Daily records shall include: A. Hourly usage of each boiler B. Type of fuel used in each boiler. [R307-401-8]
II.B.3 VOC & HAP Requirements

Engineer Review N102710007: Southern Utah University- Cedar City Campus May 8, 2025 Page 8
II.B.3.a The owner/operator shall not emit more than the following from evaporative sources (painting, printing, coating, and/or cleaning) on site: 0.98 tons per rolling 12-month period of VOCs 0.39 tons per rolling 12-month period of all HAPs combined. [R307-401-8] II.B.3.a.1 The owner/operator shall calculate a new 12-month total by the 20th day of each month using data from the previous 12 months. The owner/operator shall use a mass-balance method to
calculate emissions from evaporative sources. The owner/operator may use the following equations with applicable units to comply with the mass-balance method: VOCs = [% VOCs by Weight/100] x [Density] x [Volume Consumed] HAP = [% HAP by Weight/100] x [Density] x [Volume Consumed] [R307-401-8] II.B.3.a.2 The owner/operator shall use a mass-balance method to quantify any amount of VOCs and HAPs reclaimed. The owner/operator shall subtract the amount of VOCs and HAPs reclaimed from the quantities calculated above to provide the monthly total emissions of VOCs and HAPs. [R307-401-8] II.B.3.a.3 The owner/operator shall keep records each month of the following: A. The name (as per SDS) of the VOC- and HAP-emitting material B. The maximum percent by weight of VOCs and each HAP in each material used C. The density of each material used
D. The volume of each VOC- and HAP-emitting material used
E. The amount of VOCs and the amount of each HAP emitted from each material
F. The amount of VOCs and the amount of each HAP reclaimed and/or controlled from
each material
G. The total amount of VOCs, the total amount of each HAP, and the total amount of all
HAPs combined emitted from all materials (in tons) [R307-401-8] II.B.4 Emergency Engine Requirements
II.B.4.a The owner/operator shall only conduct maintenance or performance tests on the emergency engines in the Sharwan Smith Student Center, Science Center, and Heat Plant buildings between the hours of 6:00 am and 6:00 pm. [R307-401-8]

II.B.4.b The owner/operator shall only conduct maintenance or performance tests on the emergency engines in the ELC building between the hours of 6:00 pm and 9:00 pm. [R307-401-8]

Engineer Review N102710007: Southern Utah University- Cedar City Campus May 8, 2025 Page 9
II.B.4.c The owner/operator shall only conduct maintenance or performance tests on one emergency engine at a time. [R307-401-8]
II.B.4.d The owner/operator shall not exceed one maintenance or performance test per month for each emergency engine. [R307-401-8]
II.B.4.e The owner/operator shall not operate each emergency engine on site for more than 100 hours per rolling 12-month period during non-emergency situations. There is no time limit on the use of the engines during emergencies. [R307-401-8, 40 CFR 63 Subpart ZZZZ]

II.B.4.e.1 To determine compliance with a rolling 12-month total, the owner/operator shall calculate a new 12-month total by the 20th day of each month using data from the previous 12 months. Records documenting the operation of each emergency engine shall be kept in a log and shall include the following:
A. The date and time the emergency engine was used
B. The duration of operation in hours
C. The reason for the emergency engine usage. [40 CFR 63 Subpart ZZZZ, R307-401-8] II.B.4.e.2 To determine the duration of operation, the owner/operator shall install a non-resettable hour meter for each emergency engine. [R307-401-8, 40 CFR 63 Subpart ZZZZ]
II.B.5 Diesel Fuel Requirement
II.B.5.a The owner/operator shall only combust diesel fuel that meets the definition of ultra-low sulfur diesel (ULSD), which has a sulfur content of 15 ppm or less. [R307-401-8] II.B.5.a.1 To demonstrate compliance with the ULSD fuel requirement, the owner/operator shall maintain records of diesel fuel purchase invoices or obtain certification of sulfur content from
the diesel fuel supplier. The diesel fuel purchase invoices shall indicate that the diesel fuel meets the ULSD requirements. [R307-401-8]

Engineer Review N102710007: Southern Utah University- Cedar City Campus May 8, 2025 Page 10
PERMIT HISTORY When issued, the approval order shall supersede (if a modification) or will be based on the
following documents: Supersedes DAQE-AN102710005-22 dated October 24, 2022
Incorporates NOI dated January 16, 2025 Incorporates Additional information dated February 5, 2025 Incorporates Additional information dated February 10, 2025 Incorporates Additional information dated April 2, 2025
REVIEWER COMMENTS
1. Comment regarding emission calculations: For the new natural gas-fired boilers and heater, emission factors for criteria pollutants and HAPs are obtained from AP-42 Section 1.4. GHG emission factors are from 40 CFR Part 98 Subparts A and C. Natural gas consumption is based on the maximum equipment capacities running at 8,760 hrs per year. Emissions from the new equipment are added to the sitewide total emissions. During the review of this project, the source provided current HAP emissions without detailed emission calculations, which cannot be verified and would make HAP emissions less than the permitted in the current AO DAQE-AN102710005-22. Therefore, the permit engineer did not use
the provided HAP emissions. The new HAP PTEs are based on the sum of HAP emissions in the current AO and the HAP emissions from the new equipment. [Last updated May 8, 2025]
2. Comment regarding NSPS and MACT Applicability: 40 CFR 60 Subpart IIII; Standards of Performance for Stationary Compression Ignition Internal Combustion Engines. The source uses diesel-fired generator engines for emergency operations.
Therefore, the engines listed under II.A.6 and 7 are subject to the standard. 40 CFR 60 Subpart JJJJ; Standards of Performance for Stationary Spark Ignition Internal Combustion engines applies to engines installed after January 1, 2009 rated between 25 hp and 100 hp. The 60kW (80 hp) natural-gas fired emergency engine on-site was installed in September 2014, therefore Subpart JJJJ applies to this engine. Compliance with this subpart includes recordkeeping and reporting as well as meeting the emission limits of Table 1 for emergency engines rated between 25 hp and 100 hp. The 60-kW engine is certified to meet these emission rates by the manufacturer. 40 CFR 63 Subpart ZZZZ; National Emissions Standards for Hazardous Air Pollutants for Stationary Reciprocating Internal Combustion Engines applies to stationary RICE at area sources of
HAPs installed after June 12, 2006. Subpart ZZZZ applies to this engine. Compliance with Subpart ZZZZ is met through compliance with NSPS Subparts IIII or JJJJ. 40 CFR 60 Subpart Dc; Standards of Performance for Small Industrial-Commercial-Institutional Steam Generating Units applies to gas-fired steam generating units greater than 10 MMBtu/hr.
Boilers #1-#3 are subject to this subpart.
40 CFR 63 Subpart JJJJJJ; National Emission Standards for Hazardous Air Pollutants for Industrial, Commercial, and Institutional Boilers Area Sources applies to industrial, commercial, or institutional oil-fired boilers. SUU will not operate the boilers on oil fuels for greater than 48 hours per year outside of emergency situations (for testing, training, and maintenance) and therefore meet the subpart's definition of "gas-fired boilers." Gas fired boilers are not subject to Subpart JJJJJJ,

Engineer Review N102710007: Southern Utah University- Cedar City Campus May 8, 2025 Page 11
therefore, this subpart does not apply. [Last updated February 12, 2025]
3. Comment regarding Title V Applicability: Title V of the 1990 Clean Air Act (Title V) applies to the following: 1. Any major source 2. Any source subject to a standard, limitation, or other requirement under Section 111 of the Act, Standards of Performance for New Stationary Sources; 3. Any source subject to a standard or other requirement under Section 112 of the Act, Hazardous Air Pollutants.
4. Any Title IV affected source.
This source is not a major source, or a Title IV affected source. The source is subject to NSPS Subparts IIII and JJJJ, and MACT Subpart ZZZZ. These Federal standards, however, exempt the source from the obligation to obtain a Title V permit, if the source is not otherwise subject to the Title V requirements. The source is also subject to NSPS Subpart Dc, however, there is no numerical standard in this subpart for the natural gas combustion equipment to comply with; the subpart only requires the source to keep records of natural gas consumption. Therefore, Title V does not apply to this facility [Last updated February 12, 2025]

Engineer Review N102710007: Southern Utah University- Cedar City Campus May 8, 2025 Page 12
ACRONYMS The following lists commonly used acronyms and associated translations as they apply to this document:
40 CFR Title 40 of the Code of Federal Regulations AO Approval Order BACT Best Available Control Technology
CAA Clean Air Act CAAA Clean Air Act Amendments CDS Classification Data System (used by EPA to classify sources by size/type) CEM Continuous emissions monitor CEMS Continuous emissions monitoring system CFR Code of Federal Regulations CMS Continuous monitoring system CO Carbon monoxide CO2 Carbon Dioxide CO2e Carbon Dioxide Equivalent - 40 CFR Part 98, Subpart A, Table A-1 COM Continuous opacity monitor
DAQ/UDAQ Division of Air Quality DAQE This is a document tracking code for internal UDAQ use EPA Environmental Protection Agency
FDCP Fugitive dust control plan GHG Greenhouse Gas(es) - 40 CFR 52.21 (b)(49)(i) GWP Global Warming Potential - 40 CFR Part 86.1818-12(a)
HAP or HAPs Hazardous air pollutant(s) ITA Intent to Approve LB/HR Pounds per hour
LB/YR Pounds per year MACT Maximum Achievable Control Technology MMBTU Million British Thermal Units
NAA Nonattainment Area NAAQS National Ambient Air Quality Standards NESHAP National Emission Standards for Hazardous Air Pollutants NOI Notice of Intent NOx Oxides of nitrogen NSPS New Source Performance Standard NSR New Source Review PM10 Particulate matter less than 10 microns in size
PM2.5 Particulate matter less than 2.5 microns in size PSD Prevention of Significant Deterioration PTE Potential to Emit
R307 Rules Series 307 R307-401 Rules Series 307 - Section 401 SO2 Sulfur dioxide
Title IV Title IV of the Clean Air Act Title V Title V of the Clean Air Act TPY Tons per year
UAC Utah Administrative Code VOC Volatile organic compounds
Southern Utah University Potential to Emit
Southern Utah University Site Wide Annual HAP Emissions
lb/hr hr/yr lb/hr hr/yr lb/hr hr/yr lb/hr hr/yr lb/hr hr/yr lb/hr hr/yr lb/yr tpy1,1,2,2-Tetrachloroethane 8.19E-06 100 0.00E+00 8760 0.00E+00 8760 0.00E+00 9360 0.00E+00 8760 0.00E+00 8760 8.19E-04 4.09E-071,1,2-Trichloroethane 6.51E-06 100 0.00E+00 8760 0.00E+00 8760 0.00E+00 9360 0.00E+00 8760 0.00E+00 8760 6.51E-04 3.26E-071,1,1-Trichloroethane 0.00E+00 100 0.00E+00 8760 0.00E+00 8760 1.11E-06 9360 0.00E+00 8760 0.00E+00 8760 1.04E-02 5.18E-061,3-Butadiene 6.22E-05 100 0.00E+00 8760 0.00E+00 8760 0.00E+00 9360 0.00E+00 8760 0.00E+00 8760 6.22E-03 3.11E-061,3-Dichloropropene 5.40E-06 100 0.00E+00 8760 0.00E+00 8760 0.00E+00 9360 0.00E+00 8760 0.00E+00 8760 5.40E-04 2.70E-072-Methylnaphthalene 6.80E-06 100 0.00E+00 8760 0.00E+00 8760 1.06E-06 9360 4.80E-07 8760 8.29E-08 8760 1.55E-02 7.77E-062,2,4-Trimethylpentane 5.12E-05 100 0.00E+00 8760 0.00E+00 8760 0.00E+00 9360 0.00E+00 8760 0.00E+00 8760 5.12E-03 2.56E-06Acenaphthene2.56E-07 100 0.00E+00 8760 0.00E+00 8760 1.78E-07 9360 3.60E-08 8760 6.22E-09 8760 2.07E-03 1.03E-06Acenaphthylene1.13E-06 100 0.00E+00 8760 0.00E+00 8760 8.06E-08 9360 3.60E-08 8760 6.22E-09 8760 1.24E-03 6.19E-07Acetaldehyde1.86E-03 100 0.00E+00 8760 0.00E+00 8760 0.00E+00 9360 0.00E+00 8760 0.00E+00 8760 1.86E-01 9.30E-05Acrolein1.07E-03 100 0.00E+00 8760 0.00E+00 8760 0.00E+00 9360 0.00E+00 8760 0.00E+00 8760 1.07E-01 5.35E-05Benzene2.72E-04 100 0.00E+00 8760 0.00E+00 8760 9.37E-05 9360 4.20E-05 8760 7.25E-06 8760 1.34E+00 6.68E-04Benzo(b)fluoranthene 3.40E-08 100 0.00E+00 8760 0.00E+00 8760 7.95E-08 9360 3.60E-08 8760 6.22E-09 8760 1.12E-03 5.59E-07Benzo(e)pyrene 8.50E-08 100 0.00E+00 8760 0.00E+00 8760 0.00E+00 9360 0.00E+00 8760 0.00E+00 8760 8.50E-06 4.25E-09Benzo(g,h,i)perylene 8.48E-08 100 0.00E+00 8760 0.00E+00 8760 6.36E-08 9360 2.40E-08 8760 4.14E-09 8760 8.50E-04 4.25E-07Biphenyl4.34E-05 100 0.00E+00 8760 0.00E+00 8760 0.00E+00 9360 0.00E+00 8760 0.00E+00 8760 4.34E-03 2.17E-06Carbon Tetrachloride 7.51E-06 100 0.00E+00 8760 0.00E+00 8760 0.00E+00 9360 0.00E+00 8760 0.00E+00 8760 7.51E-04 3.76E-07Chlorobenzene6.22E-06 100 0.00E+00 8760 0.00E+00 8760 0.00E+00 9360 0.00E+00 8760 0.00E+00 8760 6.22E-04 3.11E-07Chloroform5.83E-06 100 0.00E+00 8760 0.00E+00 8760 0.00E+00 9360 0.00E+00 8760 0.00E+00 8760 5.83E-04 2.92E-07Chrysene1.42E-07 100 0.00E+00 8760 0.00E+00 8760 9.06E-08 9360 3.60E-08 8760 6.22E-09 8760 1.23E-03 6.16E-07Ethylbenzene8.13E-06 100 1.32E-05 8760 3.83E-04 8760 2.98E-07 9360 0.00E+00 8760 0.00E+00 8760 3.47E+00 1.74E-03Ethylene Dibromide 9.07E-06 100 0.00E+00 8760 0.00E+00 8760 0.00E+00 9360 0.00E+00 8760 0.00E+00 8760 9.07E-04 4.53E-07Fluoranthene2.27E-07 100 0.00E+00 8760 0.00E+00 8760 1.55E-07 9360 6.01E-08 8760 1.04E-08 8760 2.09E-03 1.05E-06Fluorene1.16E-06 100 0.00E+00 8760 0.00E+00 8760 1.45E-07 9360 5.61E-08 8760 9.67E-09 8760 2.05E-03 1.02E-06Formaldehyde1.10E-02 100 0.00E+00 8760 0.00E+00 8760 3.47E-03 9360 1.50E-03 8760 2.59E-04 8760 4.90E+01 2.45E-02Methanol5.12E-04 100 0.00E+00 8760 8.20E-04 8760 0.00E+00 9360 0.00E+00 8760 0.00E+00 8760 7.23E+00 3.62E-03Methylene Chloride 4.09E-06 100 0.00E+00 8760 0.00E+00 8760 0.00E+00 9360 0.00E+00 8760 0.00E+00 8760 4.09E-04 2.05E-07Methyl Isobutyl Ketone 0.00E+00 100 0.00E+00 8760 0.00E+00 8760 0.00E+00 9360 0.00E+00 8760 0.00E+00 8760 0.00E+00 0.00E+00Methyl Methacrylate 0.00E+00 100 0.00E+00 8760 0.00E+00 8760 0.00E+00 9360 0.00E+00 8760 0.00E+00 8760 0.00E+00 0.00E+00Hexane2.27E-04 100 0.00E+00 8760 0.00E+00 8760 7.95E-02 9360 3.60E-02 8760 6.22E-03 8760 1.11E+03 5.57E-01Naphthalene3.18E-05 100 0.00E+00 8760 0.00E+00 8760 3.22E-05 9360 1.22E-05 8760 2.11E-06 8760 4.30E-01 2.15E-04Polycyclic Aromatic Hydrocarbons (PAH)3.83E-05 100 0.00E+00 8760 0.00E+00 8760 0.00E+00 9360 0.00E+00 8760 0.00E+00 8760 3.83E-03 1.91E-06Phenanthrene2.13E-06 100 0.00E+00 8760 0.00E+00 8760 8.00E-07 9360 3.40E-07 8760 5.87E-08 8760 1.12E-02 5.60E-06Phenol4.91E-06 100 0.00E+00 8760 0.00E+00 8760 0.00E+00 9360 0.00E+00 8760 0.00E+00 8760 4.91E-04 2.46E-07Pyrene2.78E-07 100 0.00E+00 8760 0.00E+00 8760 2.41E-07 9360 1.00E-07 8760 1.73E-08 8760 3.31E-03 1.65E-06Styrene4.83E-06 100 0.00E+00 8760 0.00E+00 8760 0.00E+00 9360 0.00E+00 8760 0.00E+00 8760 4.83E-04 2.42E-07Tetrachloroethane5.08E-07 100 0.00E+00 8760 0.00E+00 8760 0.00E+00 9360 0.00E+00 8760 0.00E+00 8760 5.08E-05 2.54E-08Toluene1.63E-04 100 0.00E+00 8760 1.79E-03 8760 1.79E-04 9360 6.81E-05 8760 1.17E-05 8760 1.81E+01 9.04E-03Vinyl Chloride 3.05E-06 100 0.00E+00 8760 0.00E+00 8760 0.00E+00 9360 0.00E+00 8760 0.00E+00 8760 3.05E-04 1.53E-07Xylene9.31E-05 100 0.00E+00 8760 1.64E-03 8760 5.12E-07 9360 0.00E+00 8760 0.00E+00 8760 1.44E+01 7.19E-03
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Southern Utah University Potential to Emit
Southern Utah University Site Wide Annual HAP Emissions
lb/hr hr/yr lb/hr hr/yr lb/hr hr/yr lb/hr hr/yr lb/hr hr/yr lb/hr hr/yr lb/yr tpy1,1,2,2-Tetrachloroethane 8.19E-06 100 0.00E+00 8760 0.00E+00 8760 0.00E+00 9360 0.00E+00 8760 0.00E+00 8760 8.19E-04 4.09E-071,1,2-Trichloroethane 6.51E-06 100 0.00E+00 8760 0.00E+00 8760 0.00E+00 9360 0.00E+00 8760 0.00E+00 8760 6.51E-04 3.26E-071,1,1-Trichloroethane 0.00E+00 100 0.00E+00 8760 0.00E+00 8760 1.11E-06 9360 0.00E+00 8760 0.00E+00 8760 1.04E-02 5.18E-061,3-Butadiene 6.22E-05 100 0.00E+00 8760 0.00E+00 8760 0.00E+00 9360 0.00E+00 8760 0.00E+00 8760 6.22E-03 3.11E-061,3-Dichloropropene 5.40E-06 100 0.00E+00 8760 0.00E+00 8760 0.00E+00 9360 0.00E+00 8760 0.00E+00 8760 5.40E-04 2.70E-072-Methylnaphthalene 6.80E-06 100 0.00E+00 8760 0.00E+00 8760 1.06E-06 9360 4.80E-07 8760 8.29E-08 8760 1.55E-02 7.77E-062,2,4-Trimethylpentane 5.12E-05 100 0.00E+00 8760 0.00E+00 8760 0.00E+00 9360 0.00E+00 8760 0.00E+00 8760 5.12E-03 2.56E-06Acenaphthene2.56E-07 100 0.00E+00 8760 0.00E+00 8760 1.78E-07 9360 3.60E-08 8760 6.22E-09 8760 2.07E-03 1.03E-06Acenaphthylene1.13E-06 100 0.00E+00 8760 0.00E+00 8760 8.06E-08 9360 3.60E-08 8760 6.22E-09 8760 1.24E-03 6.19E-07Acetaldehyde1.86E-03 100 0.00E+00 8760 0.00E+00 8760 0.00E+00 9360 0.00E+00 8760 0.00E+00 8760 1.86E-01 9.30E-05Acrolein1.07E-03 100 0.00E+00 8760 0.00E+00 8760 0.00E+00 9360 0.00E+00 8760 0.00E+00 8760 1.07E-01 5.35E-05Benzene2.72E-04 100 0.00E+00 8760 0.00E+00 8760 9.37E-05 9360 4.20E-05 8760 7.25E-06 8760 1.34E+00 6.68E-04Benzo(b)fluoranthene 3.40E-08 100 0.00E+00 8760 0.00E+00 8760 7.95E-08 9360 3.60E-08 8760 6.22E-09 8760 1.12E-03 5.59E-07Benzo(e)pyrene 8.50E-08 100 0.00E+00 8760 0.00E+00 8760 0.00E+00 9360 0.00E+00 8760 0.00E+00 8760 8.50E-06 4.25E-09Benzo(g,h,i)perylene 8.48E-08 100 0.00E+00 8760 0.00E+00 8760 6.36E-08 9360 2.40E-08 8760 4.14E-09 8760 8.50E-04 4.25E-07Biphenyl4.34E-05 100 0.00E+00 8760 0.00E+00 8760 0.00E+00 9360 0.00E+00 8760 0.00E+00 8760 4.34E-03 2.17E-06Carbon Tetrachloride 7.51E-06 100 0.00E+00 8760 0.00E+00 8760 0.00E+00 9360 0.00E+00 8760 0.00E+00 8760 7.51E-04 3.76E-07Chlorobenzene6.22E-06 100 0.00E+00 8760 0.00E+00 8760 0.00E+00 9360 0.00E+00 8760 0.00E+00 8760 6.22E-04 3.11E-07Chloroform5.83E-06 100 0.00E+00 8760 0.00E+00 8760 0.00E+00 9360 0.00E+00 8760 0.00E+00 8760 5.83E-04 2.92E-07Chrysene1.42E-07 100 0.00E+00 8760 0.00E+00 8760 9.06E-08 9360 3.60E-08 8760 6.22E-09 8760 1.23E-03 6.16E-07Ethylbenzene8.13E-06 100 1.32E-05 8760 3.83E-04 8760 2.98E-07 9360 0.00E+00 8760 0.00E+00 8760 3.47E+00 1.74E-03Ethylene Dibromide 9.07E-06 100 0.00E+00 8760 0.00E+00 8760 0.00E+00 9360 0.00E+00 8760 0.00E+00 8760 9.07E-04 4.53E-07Fluoranthene2.27E-07 100 0.00E+00 8760 0.00E+00 8760 1.55E-07 9360 6.01E-08 8760 1.04E-08 8760 2.09E-03 1.05E-06Fluorene1.16E-06 100 0.00E+00 8760 0.00E+00 8760 1.45E-07 9360 5.61E-08 8760 9.67E-09 8760 2.05E-03 1.02E-06Formaldehyde1.10E-02 100 0.00E+00 8760 0.00E+00 8760 3.47E-03 9360 1.50E-03 8760 2.59E-04 8760 4.90E+01 2.45E-02Methanol5.12E-04 100 0.00E+00 8760 8.20E-04 8760 0.00E+00 9360 0.00E+00 8760 0.00E+00 8760 7.23E+00 3.62E-03Methylene Chloride 4.09E-06 100 0.00E+00 8760 0.00E+00 8760 0.00E+00 9360 0.00E+00 8760 0.00E+00 8760 4.09E-04 2.05E-07Methyl Isobutyl Ketone 0.00E+00 100 0.00E+00 8760 0.00E+00 8760 0.00E+00 9360 0.00E+00 8760 0.00E+00 8760 0.00E+00 0.00E+00Methyl Methacrylate 0.00E+00 100 0.00E+00 8760 0.00E+00 8760 0.00E+00 9360 0.00E+00 8760 0.00E+00 8760 0.00E+00 0.00E+00Hexane2.27E-04 100 0.00E+00 8760 0.00E+00 8760 7.95E-02 9360 3.60E-02 8760 6.22E-03 8760 1.11E+03 5.57E-01Naphthalene3.18E-05 100 0.00E+00 8760 0.00E+00 8760 3.22E-05 9360 1.22E-05 8760 2.11E-06 8760 4.30E-01 2.15E-04Polycyclic Aromatic Hydrocarbons (PAH)3.83E-05 100 0.00E+00 8760 0.00E+00 8760 0.00E+00 9360 0.00E+00 8760 0.00E+00 8760 3.83E-03 1.91E-06Phenanthrene2.13E-06 100 0.00E+00 8760 0.00E+00 8760 8.00E-07 9360 3.40E-07 8760 5.87E-08 8760 1.12E-02 5.60E-06Phenol4.91E-06 100 0.00E+00 8760 0.00E+00 8760 0.00E+00 9360 0.00E+00 8760 0.00E+00 8760 4.91E-04 2.46E-07Pyrene2.78E-07 100 0.00E+00 8760 0.00E+00 8760 2.41E-07 9360 1.00E-07 8760 1.73E-08 8760 3.31E-03 1.65E-06Styrene4.83E-06 100 0.00E+00 8760 0.00E+00 8760 0.00E+00 9360 0.00E+00 8760 0.00E+00 8760 4.83E-04 2.42E-07Tetrachloroethane5.08E-07 100 0.00E+00 8760 0.00E+00 8760 0.00E+00 9360 0.00E+00 8760 0.00E+00 8760 5.08E-05 2.54E-08Toluene1.63E-04 100 0.00E+00 8760 1.79E-03 8760 1.79E-04 9360 6.81E-05 8760 1.17E-05 8760 1.81E+01 9.04E-03Vinyl Chloride 3.05E-06 100 0.00E+00 8760 0.00E+00 8760 0.00E+00 9360 0.00E+00 8760 0.00E+00 8760 3.05E-04 1.53E-07Xylene9.31E-05 100 0.00E+00 8760 1.64E-03 8760 5.12E-07 9360 0.00E+00 8760 0.00E+00 8760 1.44E+01 7.19E-03
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lbs/hr hrs/yr lbs/hr hrs/yr lbs/hr hrs/yrlbs/hr hrs/yr
Species
1,1,2,2-Tetrachloroethane 8.19E-06 100
1,1,2-Trichloroethane 6.51E-06 100
1,1,1-Trichloroethane 0 100 1.11E-06 9360
1,3-Butadiene 6.22E-05 100
1,3-Dichloropropene 5.4E-06 100
2-Methylnaphthalene 6.8E-06 100 1.06E-06 9360
2,2,4-Trimethylpentane 5.12E-05 100
Acenaphthene 2.56E-07 100 1.78E-07 9360
Acenaphthylene 1.13E-06 100 8.06E-08 9360
Acetaldehyde 0.00186 100
Acrolein 0.00107 100
Benzene 0.000272 100 9.37E-05 9360
Benzo(b)fluoranthene 3.4E-08 100 7.95E-08
Benzo(e)pyrene 8.5E-08 100 9360
Benzo(g,h,i)perylene 8.48E-08 100 6.36E-08 9360
Biphenyl 4.34E-05 100
Carbon Tetrachloride 7.51E-06 100
Chlorobenzene 6.22E-06 100
Chloroform 5.83E-06 100
Chrysene 1.42E-07 100 9.06E-08 9360
Ethylbenzene 8.13E-06 100 1.32E-05 8760 0.00038 8760 2.98E-07
Ethylene Dibromide 9.07E-06 100 9360
Fluoranthene 2.27E-07 100 1.55E-07 9360
Fluorene 1.16E-06 100 1.45E-07 9360
Formaldehyde 0.011 100 0.00347 9360
Methanol 0.000512 100 0.00082 8760
Methylene Chloride 4.09E-06 100
Methyl Isobutyl Ketone 0 100
Methyl Methacrylate 0 100
Hexane 0.000227 100 0.0795 9360
Naphthalene 3.18E-05 100 3.22E-05 9360
Polycyclic Aromatic Hydroc 3.83E-05 100
Phenanthrene 2.13E-06 100 8E-07 9360
Phenol 4.91E-06 100
Pyrene 2.78E-07 100 2.41E-07 9360
Styrene 4.83E-06 100
Tetrachloroethane 5.08E-07 100
Toluene 0.000163 100 0.00179 8760 0.000179 9360
Vinyl Chloride 3.05E-06 100
Xylene 9.31E-05 100 0.00164 8760 5.12E-07 9360
Total
Generic HAPs total
Satellite Boilers Current Emissions Project Projected Emis
lbs/hr hrs/yr tpy lb/yr lbs/hr hrs/yr tpy tpy
4.095E-07 0.000819 4.095E-07
3.255E-07 0.000651 3.255E-07
5.1948E-06 0.0103896 5.1948E-06
0.00000311 0.00622 0.00000311
0.00000027 0.00054 0.00000027
4.8E-07 8760 7.4032E-06 0.0148064 8E-08 8760 3.63102E-07 7.7663E-06
0.00000256 0.00512 0.00000256
3.6E-08 8760 1.00352E-06 0.00200704 6E-09 8760 2.72436E-08 1.0308E-06
3.6E-08 8760 5.91388E-07 0.00118278 6E-09 8760 2.72436E-08 6.1863E-07
0.000093 0.186 0.000093
0.0000535 0.107 0.0000535
0.000042 8760 0.000636076 1.272152 7E-06 8760 0.000031755 0.00066783
3.6E-08 8760 1.5938E-07 0.00031876 6E-09 8760 2.72436E-08 1.8662E-07
4.25E-09 0.0000085 4.25E-09
2.4E-08 8760 4.07008E-07 0.00081402 4E-09 8760 1.81332E-08 4.2514E-07
0.00000217 0.00434 0.00000217
3.755E-07 0.000751 3.755E-07
0.000000311 0.000622 3.11E-07
2.915E-07 0.000583 2.915E-07
3.6E-08 8760 5.88788E-07 0.00117758 6E-09 8760 2.72436E-08 6.1603E-07
0.001735763 3.471525 0.00173576
4.535E-07 0.000907 4.535E-07
6.01E-08 8760 9.99988E-07 0.00199998 1E-08 8760 4.5552E-08 1.0455E-06
5.61E-08 8760 9.82318E-07 0.00196464 1E-08 8760 4.23546E-08 1.0247E-06
0.0015 8760 0.0233596 46.7192 0.0003 8760 0.00113442 0.02449402
0.0036172 7.2344 0.0036172
2.045E-07 0.000409 2.045E-07
0 0 0
0 0 0
0.036 8760 0.52975135 1059.5027 0.0062 8760 0.0272436 0.55699495
1.22E-05 8760 0.000205722 0.411444 2E-06 8760 9.2418E-06 0.00021496
0.000001915 0.00383 1.915E-06
3.4E-07 8760 5.3397E-06 0.0106794 6E-08 8760 2.57106E-07 5.5968E-06
2.455E-07 0.000491 2.455E-07
1E-07 8760 1.57978E-06 0.00315956 2E-08 8760 7.5774E-08 1.6556E-06
2.415E-07 0.000483 2.415E-07
2.54E-08 0.0000508 2.54E-08
6.81E-05 8760 0.008984348 17.968696 1E-05 8760 0.000051246 0.00903559
1.525E-07 0.000305 1.525E-07
0.007190251 14.3805023 0.00719025
0.575664125 1151.32825 0.6041353
0.005742295 11.48459 0.00575245
ssions
lbs/yr
0.000819
0.000651
0.0103896
0.00622
0.00054
0.0155326
0.00512
0.0020615
0.0012373
0.186
0.107
1.335662
0.0003732
0.0000085
0.0008503
0.00434
0.000751
0.000622
0.000583
0.0012321
3.471525
0.000907
0.0020911
0.0020493
48.98804
7.2344
0.000409
0
0
1113.9899
0.4299276
0.00383
0.0111936
0.000491
0.0033111
0.000483
0.0000508
18.071188
0.000305
14.380502
1208.2706
11.504896

SUU / NOI Air Permit Application Trinity Consultants
UTAH DIVISION OF AIR QUALITY – NOTICE
OF INTENT
Southern Utah University – Cedar City, Utah

SOUTHERN UTAH UNIVERSITY
Modification of Approval Order DAQE-AN102710005-22

Prepared By:

TRINITY CONSULTANTS
4525 Wasatch Boulevard
Suite 200
Salt Lake City, Utah 84104
[phone]
Submitted on Behalf of:
Southern Utah University
Cedar City, Utah 84720

December 2024

SUU / NOI Air Permit Application Trinity Consultants i
TABLE OF CONTENTS
TABLE OF CONTENTS I
EXECUTIVE SUMMARY 1-1
GENERAL INFORMATION 2-1
2.1 Source Identification Summary .................................................................................. 2-1
2.2 Source Information and General Location .................................................................. 2-1
2.3 Source Size Determination ......................................................................................... 2-1
2.4 Notice of Intent Forms ................................................................................................ 2-1
2.5 Notice of Intent Fees .................................................................................................. 2-2
DESCRIPTION OF PROJECT AND PROCESS 3-1
3.1 Description of Project ................................................................................................. 3-1
EMISSIONS RELATED INFORMATION 4-3 4.1 Natural-Gas Fired Boilers ............................................................................................ 4-3 4.2 GHG Emissions ............................................................................................................ 4-3
BEST AVAILABLE CONTROL TECHNOLOGY ANALYSIS 5-1
5.1 Small Natural Gas Boilers ........................................................................................... 5-1
EMISSION IMPACT ANALYSIS 6-1
NONATTAINMENT/MAINTENANCE AREAS - OFFSETTING 7-1
APPLICABLE REGULATIONS 8-1
8.1 UDAQ Applicable Rules ............................................................................................... 8-1
8.2 Federal Rules: National Emission Standards for Hazardous Air Pollutants................. 8-1
FORMS 8-3
EMISSION CALCULATION B

SUU / NOI Air Permit Application Trinity Consultants 1-1
EXECUTIVE SUMMARY
Southern Utah University (SUU) is a public, higher education institution with air emissions primarily due to
the operation of boilers, paint booths, and emergency generators located in Cedar City, UT. Cedar City is in
Iron County, which is currently classified as an attainment area for the National Ambient Air Quality
Standards (NAAQS) for all criteria pollutants. SUU currently operates Approval Order (AO) DAQE-
AN102710005-22, issued October 24, 2022.

SUU is currently constructing a new music building on campus, which will not be connected to the central
heating plant. With this Notice of Intent (NOI) air quality application, SUU proposes to install two (2) small
natural gas boilers to act as the primary heating source in the new music building. These boilers are slated
to run year-round and will provide heating for the whole building. In addition to the boilers, SUU proposes
to install one (1) natural gas water heater.

This NOI air quality application is being submitted in accordance with the Utah Division of Air Quality
(UDAQ) rules, Utah Administrative Code (UAC) R307-401, and includes all supporting documentation in
order to modify DAQE-AN102710005-22 and obtain authorization for the changes specified above. Appendix
B summarizes the emissions resulting from SUU after the proposed changes. As the requested addition does
not constitute a major modification, Utah offset requirements in accordance with UAC R3074203 and R307-
421-3 do not apply. Additionally, modeling requirements under UAC R307-410-4 and R307-410-5 do not
apply.

SUU / NOI Air Permit Application Trinity Consultants 2-1
GENERAL INFORMATION
The following section contains the information requested under the “Source Identification Information”
section of UDAQ Form 1 Notice of Intent (NOI) Application Checklist.
2.1 Source Identification Summary
► Company Name: Southern Utah University
► Address: 351 W University Blvd, Cedar City, Utah 84720
► County: Iron County
► UTM Coordinates: Easting: 317,343 m, Northing: 4,171,910m, Zone 12
► Primary SIC Code: 8221 (Colleges, Universities, & Professional Schools)
► Area Designation: Attainment for all Pollutants
► Source Size Determination: Minor Source
► Current AO: DAQE-AN102710005-22

All correspondence regarding this submission should be addressed to:
► Mr. Quinn Mathews
► Director of Utility Services ► 385 South 1275 West
► Cedar City, UT 84720
► Phone: [phone] ► Email [e-mail]
2.2 Source Information and General Location

The SUU campus is located in the heart of Cedar City, which is a part of Iron county. Iron County is an
attainment area of the National Ambient Air Quality Standards (NAAQS) for all criteria pollutants.
2.3 Source Size Determination
As presented in Appendix B, the proposed site-wide emissions are below the major source threshold (MST)
for all criteria pollutants. As such, SUU is classified as a minor source under New Source Review (NSR).
2.4 Notice of Intent Forms
The following UDAQ forms have been included with the NOI air permit application:

► Form 1 – Notice of Intent Application Checklist;
► Form 2 – Source Identification Information;
► Form 4 – Project Information;
► Form 5 – Emissions Information Criteria/GHGs/HAPs; and
► Form 19 – Natural Gas Boilers and Liquid Heaters

SUU / NOI Air Permit Application Trinity Consultants 2-2
2.5 Notice of Intent Fees
SUU will use the UDAQ’s Payment Portal to prepay the following UDAQ NOI fees associated with this
submittal:

► “Application Filing Fee” for the “New Minor Source or Minor Modification at Minor or Major Source”
category = $575
► “Application Review Fee” for the “New Minor Source or Minor Modification at Minor or Major Source”
category = $2,500
► Total UDAQ fees = $3,075

SUU understands that the total permit review fee is based on the total actual time spent by UDAQ staff
processing this NOI air permit application. Upon issuance of an AO, if the total review time is more than 20
standard hours, UDAQ will invoice SUU at $125 per hour for the additional time above 20 standard hours.

SUU / NOI Air Permit Application Trinity Consultants 3-1
DESCRIPTION OF PROJECT AND PROCESS
3.1 Description of Project
SUU proposes to modify their current operating permit, (AO) DAQE-AN102710005-22, to include the addition of two (2) natural gas boilers, rated at 1.7 MMBtu/hr each, along with one (1) natural gas water
heater rated 0.12 MMBtu/hr. These boilers will be the primary heating source for SUU’s new Music Center
being built on the northern end of campus. The new Music Center will not be connected to the central heating plant and will rely on the boilers for heating instead.

The new Music Center will serve as a hub for musical education, performance, and innovation. The design of the 44,000-square-foot building marks a significant milestone in SUU’s commitment to fostering artistic
excellence and providing state-of-the-art facilities for its students and community
Figure 3-1 depicts the general location of the new Music Center.

No other changes or permit updates are being requested with this NOI.

SUU / NOI Air Permit Application Trinity Consultants 3-2
Figure 3-1: New Music Building Location

SUU / NOI Air Permit Application Trinity Consultants 4-3
EMISSIONS RELATED INFORMATION
This section details the methodology used to calculate controlled and uncontrolled emissions for criteria
pollutants, GHGs, and HAPs associated with each new unit and its associated fugitives as regulated by R307-401-5(2)(b). Detailed emission calculation tables are included in Appendix B.
4.1 Natural-Gas Fired Equipment
Potential-to-emit (PTE) calculations for each of the criteria pollutants were carried out for the addition of
two (2) natural-gas-fired boilers along with one (1) natural-gas water heater. Calculations for the criteria
pollutants are based on the emission factor for each pollutant, the heat input, annual hours of operation,
and the higher heating value (HHV). The HHV for natural gas was obtained per AP-42 Chapter 1, Section
1.4. Emission factors (EF) for natural gas emissions were obtained from AP-42, Section 1.4 and the emission
factor for NH3 was obtained per EPA’s Final Report on Ammonia Emission Factors, Table 7-4. For the boilers,
the NOx emission factor was obtained from the vendor.
The following calculations were carried out for the boilers for NOX, CO, PM10, PM2.5, SO2, NH3 and VOCs.
Annual Emissions (lb/hr)=Heat Input �MMBtuhr�× EF �lbMMscf�/ HHV �1,020 MMBtu1 MMscf �
Annual Emissions (tpy)=Annual Emissions �lbhr�× Annual Operation �8760 hryr�× �1 ton2,000 lb�

4.2 GHG Emissions
GHG pollutants expected to be emitted from the equipment include carbon dioxide (CO2), methane (CH4),
and nitrous oxide (N2O). Standard emission factors for CO2, N2O and CH4 are provided in 40 CFR Part 98, Subpart C, Table C-1 and Table C-2. The global warming potential for each relevant pollutant is obtained
from 40 CFR Part 98, Subpart A, Table A-1. Calculations for GHG pollutants are based on the emission factor
for each GHG pollutant, relevant global warming potential, annual hours of operation, the maximum heat input, and the HHV.
CO2e Annual Emissions (tpy)=�Emission Factor CO2 �lbMMBtu�+Emission Factor CH4 �lbMMscf�× GWP CH4+Emission Factor N2O �lbMMBtu�× GWP N2O� × �Heat Input�MMbtuhr��
× Operating Hours �hryr�× �1 ton2,000 lb�

4.3 HAP Emissions

SUU / NOI Air Permit Application Trinity Consultants 4-4
HAP emissions were determined using the heat input, the HHV and annual hours of operation. Emission
factors for HAPs are obtained from AP-42, Section 1.4, Table 1.4-3. HAP Annual Emission Rate (tpy)=Emission Factor �lbMMscf�× Heat Input�MMBtuhr�HHV �1020 MMBtuMMscf�× Annual Operation �hryr �× �1 ton2,000 lbs�

SUU / NOI Air Permit Application Trinity Consultants 5-1
BEST AVAILABLE CONTROL TECHNOLOGY ANALYSIS
In the State of Utah, under R307-401-5(2)(d), Notice of Intent, every facility, operation, or process that
proposes any activity that would emit an air contaminant into the air, must consider BACT for a proposed new source or modification.1 The below BACT analysis only addresses units which will be modified, installed,
or otherwise affected by this NOI air permit application.
5.1 Small Natural Gas Units
As the proposed units are each rated at less than the 5 MMBtu/hr exemption limit in R307-401-10(1), and
exempt per UDAQ guidance, Source Category Exemption published March 6, 2017, a BACT analysis is not
required for this equipment. UDAQ has generally established low NOx technology as BACT for boiler units of this size, this technology typically represents an emission rate between 20 and 55 ppm. The proposed SUU
natural gas boilers and water heater have a NOx emission rate guarantee of 30 ppm and 20 ppm
respectively. The low NOx emission rate, in addition to good combustion practices, meets the established BACT for these units.

1 UAC R307-401-4

SUU / NOI Air Permit Application Trinity Consultants 6-1
EMISSION IMPACT ANALYSIS
Table 6-1 compares criteria pollutant total proposed emissions to applicable modeling thresholds contained in R307-403-4 through 7, and
R307-410-4. Table 6-2 compares HAP emissions to applicable modeling thresholds as regulated by R307-410-5.
Table 6-1. Facility-Wide Emissions and Comparison to Major Source and Modeling Thresholds.
Emissions Potential Annual Emissions Estimate (tpy)
NOX CO PM10 PM2.5 VOC SO2 CO2e Total HAPs
Weil-Mclain Boilers 0.55 1.23 0.11 0.11 0.08 0.01 1744.84 2.75E-02
Natural Gas Water Heater 0.05 0.02 3.92E-03 3.92E-03 2.83E-03 3.09E-04 61.55 9.70E-04

Currently Permitted PTE1 23.66 27.51 16.67 16.66 2.82 1.00 33,188 0.63
Proposed PTE 24.26 28.76 16.78 16.77 2.90 1.01 34,994.39 0.66

Major Source Thresholds2 250 250 250 250 250 250 75,000 10/25
Threshold Exceeded? No No No No No No No No

Modeling Limits3 40 100 15 -- -- 40 -- See HAPs Summary
Threshold Exceeded? No No No No No No No No
1. AO DAQE-AN102710005-22
2. Criteria pollutant major source thresholds defined by 40 CFR 51.165(a)(1)(iv)(A) and 40 CFR 52.21(b)(1)(i)(b).
3. Modeling limit is stated in UDAQ Emissions Impact Assessment Guidelines under Table 1: Total Controlled Emission Rates for New Sources or Emissions Increase.

SUU / NOI Air Permit Application Trinity Consultants 6-2
Table 6-2. Project Annual Potential HAP Emissions
Pollutant Project Hourly Emissions (lb/hr) ETV1 Modeling Required?
2-Methylnaphthalene 8.29E-08 -- No
3-Methylcholanthrene 6.22E-09 -- No
7,12-Dimethylbenz(a)anthracene 5.52E-08 -- No
Acenaphthene 6.22E-09 -- No
Acenaphthylene 6.22E-09 -- No
Anthracene 8.29E-09 -- No
Benz(a)anthracene 6.22E-09 -- No
Benzene 7.25E-06 0.32 No
Benzo(a)pyrene 4.14E-09 -- No
Benzo(b)fluoranthene 6.22E-09 -- No
Benzo(g,h,i)perylene 4.14E-09 -- No
Chrysene 6.22E-09 -- No
Dibenzo(a,h) anthracene 4.14E-09 -- No
Dichlorobenzene 4.14E-06 -- No
Fluoranthene 1.04E-08 -- No
Fluorene 9.67E-09 -- No
Formaldehyde 2.59E-04 0.06 No
Hexane 6.22E-03 34.90 No
Indeno(1,2,3-cd)pyrene 6.22E-09 -- No
Naphthalene 2.11E-06 10.38 No
Phenanthrene 5.87E-08 -- No
Pyrene 1.73E-08 -- No
Toluene 1.17E-05 14.92 No

1. The Emission Threshold Value (ETV) assumes < 50 m distance to the fence line and vertically restricted/fugitive releases.
SUU will not exceed UDAQ’s modeling thresholds for criteria pollutants or HAPs emissions, and an air dispersion modeling analysis will not
be required to demonstrate the impacts of the site-wide criteria pollutant emissions from the proposed change.

SUU / NOI Air Permit Application Trinity Consultants 7-1
NONATTAINMENT/MAINTENANCE AREAS - OFFSETTING
SUU campus is located in Iron County, Utah. Iron County is currently classified as an attainment area for all
criteria pollutants. The UDAQ offset requirements in R307-403, R307-420, and R307-421 are not applicable
for the proposed modifications.

SUU / NOI Air Permit Application Trinity Consultants 8-1
APPLICABLE REGULATIONS
8.1 UDAQ Applicable Rules
SUU has evaluated the applicability of each rule under the Utah Administrative Code (UAC) Title R307. Two
regulations were identified as potentially applicable to this project: R307-230 and R307-315. Each of which
is discussed below.

Rules generally applicable to SUU but not affected by this project have not been addressed. SUU will
continue to recognize and comply with definitions, terms, abbreviations, and references used in UAC R307
and 40 CFR for all applicable rules.
UAC R307-230: NOx Emission Limits for Natural Gas-Fired Water Heaters
Rule R307-230 is intended to reduce emissions of NOx from natural gas-fired water heaters. R307-230 has
The State Construction and Fire Codes Act, Subsection 15A-6-102, incorporated by reference. R307-230
establishes a 20 ppm NOx emission limit for water heaters with heat input greater than 75,000 BTU and less
than 2,000,000 BTU. The proposed 120,000 BTU water heater has a NOx emission rate of 20 ppm,
complying with the regulation(s) established in R307-230.
UAC R307-315: NOx Emission Controls for Natural Gas-Fired Boilers 2.0-5.0 MMBtu.
Rule R307-15 establishes maximum emission thresholds for the emissions of NOx for new or modified
natural gas-fired boilers with a total rated heat input of at least 2.0 MMBtu/hr and not more than 5.0
MMBtu/hr. The proposed boilers are rated at 1.701 MMBtu/hr each, less than the required threshold of 2.0
MMBtu/hr, making them exempt from this regulation.

8.2 Federal Rules: National Emission Standards for Hazardous Air Pollutants
(NESHAP) and New Source Performance Standards (NSPS)
The NESHAP federal regulations found in Title 40 Part 61 and 63 of the CFR, are emission standards for
HAPs. NESHAP are applicable to both major sources of HAPs (facilities that exceed the major source
thresholds of 10 tpy of a single HAP and 25 tpy of any combination of HAPs from stationary sources) as well
as non-major sources (termed “area sources”). NESHAP apply to sources in specifically regulated industrial
source classifications (Clean Air Act Section 112(d)) or on a case-by-case basis (Clean Air Act Section
112(g)) for facilities not regulated as a specific industrial source type. NSPS require new, modified, or reconstructed sources to control emissions to the level achievable by the best demonstrated technology as
specified in the applicable provisions.
No new NESHAP or NSPS standards were found to be applicable to this project. Standards generally
applicable to SUU but not affected by this project have not been addressed. To demonstrate thorough due
diligence, SUU has identified NESHAP and NSPS standards potentially applicable to this project and reviewed the basis for exemption.

SUU / NOI Air Permit Application Trinity Consultants 8-2
NESHAP 40 CFR Part 63 Subpart JJJJJJ: Industrial, Commercial, and
Institutional Area Source Boilers
This rule is intended to emissions of toxic air pollutants from industrial, commercial, and institutional boilers
located at area source facilities. It establishes standards to address emissions of mercury, particulate matter, and carbon monoxide. The rule covers boilers located at area source facilities that burn coal, oil, or
biomass, but not boilers that burn only gaseous fuels or any solid waste. The proposed boilers will be
burning only gaseous fuels, therefore this rule is not applicable for this project.
NSPS 40 CFR 60 Subpart Db-Dc: Industrial-Commercial-Institutional Steam
Generating Units
This standard is applicable to Industrial-commercial-institutional steam generating units, which are boilers
that are capable of combusting over 10 MMBtu/h of fuel. The proposed boilers are rated at 1.7 MMBtu/hr
each, therefore this standard is not applicable for this project.

SUU / NOI Air Permit Application Trinity Consultants 8-3
FORMS
Form 1 Date __________________
Notice of Intent (NOI) Application Checklist Company Utah Division of Air Quality
New Source Review Section
Source Identification Information [R307-401-5]
1. Company name, mailing address, physical address and telephone number 
2. Company contact (Name, mailing address, and telephone number)
3.Name and contact of person submitting NOI application (if different than 2) 4.Source Universal Transverse Mercator (UTM) coordinates 
5. Source Standard Industrial Classification (SIC) code 
6.Area designation (attainment, maintenance, or nonattainment)
7.Federal/State requirement applicability (NAAQS, NSPS, MACT, SIP, etc.)
8.Source size determination (Major, Minor, PSD) 9. Current Approval Order(s) and/or Title V Permit numbers 
NOI Application Information: [R307-401]










N/A 
N/A 
A.Air quality analysis (air model, met data, background data, source impact analysis) N/A 
1.Detailed description of the project and source process
2.Discussion of fuels, raw materials, and products consumed/produced3.Description of equipment used in the process and operating schedule
4.Description of changes to the process, production rates, etc.
5.Site plan of source with building dimensions, stack parameters, etc.
6.Best Available Control Technology (BACT) Analysis [R307-401-8]A.BACT analysis for all new and modified equipment
7.Emissions Related Information: [R307-401-2(b)]
A.Emission calculations for each new/modified unit and site-wide
(Include PM10, PM2.5, NOx, SO2, CO, VOCs, HAPs, and GHGs)B.References/assumptions, SDS, for each calculation and pollutant
C.All speciated HAP emissions (list in lbs/hr)
8.Emissions Impact Analysis – Approved Modeling Protocol [R307-410]
A.Composition and physical characteristics of effluent(emission rates, temperature, volume, pollutant types and concentrations)
9.Nonattainment/Maintenance Areas – Major NSR/Minor (offsetting only) [R307-403]
A.NAAQS demonstration, Lowest Achievable Emission Rate, Offset requirements
B.Alternative site analysis, Major source ownership compliance certification
10.Major Sources in Attainment or Unclassified Areas (PSD) [R307-405, R307-406]
B.Visibility impact analysis, Class I area impact
11.Signature on Application
N/A 
Note: The Division of Air Quality will not accept documents containing confidential information or data.
Documents containing confidential information will be returned to the Source submitting the application.
iJoc.i-iirKji'il Dale:' (X!/AS,‘2C U
DAQ 2018-002271
DAO 2018 002272
Page 1 of 1
Form 4 Company____________________________
Project Information Site ______________________________
Utah Division of Air Quality
New Source Review Section
Process Data - For Modification/Amendment ONLY
1.Permit Number_______________________________
If submitting a new permit, then use Form 3
Requested Changes
2.Name of process to be modified/added:
_______________________________
End product of this process:
_______________________________
3.Permit Change Type: New Increase*
Equipment
Process
Condition Change ____________________
Other ______________________________
Other ______________________________
Other ______________________________
4.Does new emission unit affect existing
permitted process limits?
Yes No
5.Condition(s) Changing:
6.Description of Permit/Process Change**
7.New or modified materials and quantities used in process. **
Material Quantity Annually
8.New or modified process emitting units **
Emitting Unit(s) Capacity(s) Manufacture Date(s)
*If the permit being modified does not include CO2e or PM2.5, the emissions need to be calculated and submitted to DAQ, which may result in an
emissions increase and a public comment period.
**If additional space is required, please generate a document to accommodate and attach to form.
Southern Utah University (SUU) is constructing a new music building on campus, which will not be connected to the central heating plant. They propose to install two (2) small natural gas boilers to act as the primary heating source in the new music building. These boilers are slated to run year-round and will provide heating for the whole building. In addition to the boilers, SUU also propose to install one (1)
small natural gas water heater.
Doc.uim:i'ii D^lc: 02/28/2018
DAQ 2018-002274
Page 1 of 1
Company___________________________
Site _____________________________
Form 5
Emissions Information
Criteria/GHGs/ HAP’s
Utah Division of Air Quality
New Source Review Section
Potential to Emit* Criteria Pollutants & GHGs
Criteria Pollutants Permitted Emissions
(tons/yr)
Emissions Increases
(tons/yr)
Proposed Emissions
(tons/yr)
PM10 Total
PM10 Fugitive
PM2.5
NOx
SO2
CO
VOC
VOC Fugitive
NH3
Greenhouse Gases CO2e CO2e CO2e
CO2
CH4
N2O
HFCs
PFCs
SF6
Total CO2e
*Potential to emit to include pollution control equipment as defined by R307-401-2.
Hazardous Air Pollutants** (**Defined in Section 112(b) of the Clean Air Act )
Hazardous Air
Pollutant***
Permitted Emissions
(tons/yr)
Emission Increase
(tons/yr)
Proposed
Emission (tons/yr)
Emission Increase
(lbs/hr)
Total HAP
*** Use additional sheets for pollutants if needed
See NOI Appendix B
Jccumonl Dcjlc: 02/28/2018
Utah Division of Air Quality
New Source Review Section Company ______________________
Site/Source _____________________
Form 19 Date ___________________________
Natural Gas Boilers and Liquid Heaters
Boiler Information
1. Boiler Manufacturer: ___________________________________________________________________________
2. Model Number: ______________________________3. Serial Number: _______________________________
4. Boiler Rating: _________________(10
6 Btu per Hour)
5. Operating Schedule: __________ hours per day __________ days per week ___________ weeks per year
6. Use: □ steam: psig □hot water □other hot liquid: ________________________________
□Natural Gas □ LPG □ Butane □ Methanol
□Process Gas - H2S content in process gas __________ grain/100cu.ft.
7. Fuels:
□Fuel Oil - specify grade:□Other, specify: ______________________________________
Sulfur content % by weight Days per year during which unit is oil fired: ________________
Backup
Fuel □Diesel □ Natural Gas □ LPG □ Butane □ Methanol □ Other _________________
8. Is unit used to incinerate waste gas liquid stream? □ yes □ no
(Submit drawing of method of waste stream introduction to burners)
Gas Burner Information
9. Gas Burner Manufacturer: _____________________________________________________________________
10. No. of Burners: ______________________________11. Minimum rating per burner: _____________ cu. ft/hr
12. Average Load: _______%13. Maximum rating per burner: ____________ cu. ft/hr
14. Performance Guarantee (ppm dry corrected to 3% Oxygen):
NOx: ______________ CO: ______________ Hydrocarbons: ______________
□Manual □Automatic on-off15. Gas burner mode of control:
□Automatic hi-low □Automatic full modulation
Oil Burner Information
16. Oil burner manufacturer:
17. Model: _______________ number of burners: _________________ Size number: _______________
18. Minimum rating per burner: _____________ gal/hr 19. Maximum rating per burner: ___________ gal/hr
Page 1 of 3
Southern Utah University688
Cedar City Campus
'HFHPEHU 2024
Weil-McLain
1.701
24 7 52
Powerflame
788
30 50
Page 2 of 3
Form 11 - Natural Gas Boiler and Liquid Heater
(Continued)
Modifications for Emissions Reduction
20. Type of modification: □ Low NOX Burner □ Flue Gas Recirculation (FGR)
□Oxygen Trim □Other (specify) ______________________________________
For Low-NOX Burners
21. Burner Type: □ Staged air □ Staged fuel □ Internal flue gas recirculation
□Ceramic □Other (specify): ___________________________________________________
22. Manufacturer and Model Number: _______________________________________________________________
23. Rating: ______________________ 10
6 BTU/HR 24. Combustion air blower horsepower: ____________
For Flue Gas Recirculation (FGR)
25. Type: □ Induced □ Forced Recirculation fan horsepower: ______________________________________
26. FGR capacity at full load: scfm %FGR
27. FGR gas temperature or load at which FGR commences: OF % load
28. Where is recirculation flue gas reintroduced? _______________________________________________________
For Oxygen Trim Systems
29. Manufacturer and Model Number: ________________________________________________________________
30. Recorder: □ yes □ no Describe: ____________________________________________________________
Stack or Vent Data
31. Inside stack diameter or dimensions ____________
Stack height above the ground ________________
Stack height above the building ________________
32. Gas exit temperature: ___________
OF
33. Stack serves: □ this equipment only, □ other equipment (submit type and rating of all other equipment
exhausted through this stack or vent)
34. Stack flow rate: _________________ acfm Vertically restricted? □ Yes □No
Emissions Calculations (PTE)
35. Calculated emissions for this device
PM10 ___________Lbs/hr___________ Tons/yr PM2.5 ___________Lbs/hr___________ Tons/yr
NOx ___________Lbs/hr ___________Tons/yr SOx ____________Lbs/hr___________ Tons/yr
CO ____________Lbs/hr ___________Tons/yr VOC ___________Lbs/hr ___________Tons/yr
CO2 ___________ Tons/yr CH4 ___________Tons/yr
N2O ___________Tons/yr
HAPs_________ Lbs/hr (speciate)__________Tons/yr (speciate)
Submit calculations as an appendix. If other pollutants are emitted, include the emissions in the appendix.
See Appendix B in NOI
Page 3 of 3
Instructions Form 19 – Natural Gas Boiler and Liquid Heater
This application form is applicable to natural gas-fired boilers and liquid heaters. Boiler(s) rated for a total of less than five
million Btu per hr and fueled by natural gas and one million Btu per hour and fired by fuel oil numbers 1-6 are exempt from filing
a Notice of Intent to construct. See Source Category Exemptions R307-401-10 (1) and (2).
NOTE: 1. Submit this form in conjunction with Form 1 and Form 2.
2.Call the Division of Air Quality (DAQ) at [phone] if you have problems or questions in filling out this form.
Ask to speak with a New Source Review engineer. We will be glad to help!
3. Attach specification sheets for all burners, equipment and modifications to boiler.
1.Company name of manufacturer of boiler (specifically the pressure vessel or shell).
2. Manufacturer's model number.
3. Specific identification, serial, number of the boiler.
4. The maximum heat input for which the boiler is rated. Give the value in million British thermal units per hour.
5.The operating schedule for which you want to be permitted. The air quality impact will be evaluated according to this
schedule. Note: The approval order will limit operating hours to what you request.
6. Mark the box indicating the purpose of the boiler.
7. Mark all fuels that you wish to be approved to use, also list the backup fuel to be used if any.
8.If a waste stream is burned, answer yes and submit drawings, etc. to characterize the method.
9. Company name of manufacturer of gas burners. If the boiler is a packaged boiler, list the manufacturer of the boiler.
10.How many gas burners will be installed in the boiler?
11.Minimum gas flow rate at which each burner can operate (in cubic feet per hour)
12. The average load at which you plan to operate each burner, compared to the maximum burner rating.
13. Maximum gas flow rate at which each burner can operate (in cubic feet per hour)
14.List the maximum concentration which the manufacturer guarantees the burners will produce in parts per million of
Nitrogen Oxides (NOX), Carbon Monoxide (CO), and Total Hydrocarbons. If the percentage of Non-methane
hydrocarbons is known, please provide that information.
15. Indicate the method used to control the flame for the burners.
16.Company name of manufacturer of oil burners. If the boiler is a packaged boiler, and has duel fuel capability, list the
manufacturer of the boiler.
17. Manufacturer's model, number (quantity), and size of oil burners to be installed in the boiler.
18.Minimum oil flow rate at which each burner can operate (in gallons per hour).
19. Maximum oil flow rate at which each burner can operate (in gallons per hour).
20.Indicate the type of emissions reduction strategy(ies) used in the proposed boiler.
21.Indicate the low-NOX strategy used in the burner design.
22. Company name of manufacturer of the burners. Manufacturer's model number for the burners.
23. The heat input rating of each burner in million British thermal units per hour.
24. In a forced draft design, the horsepower of the fan motor used.
25.Method for delivering the flue gas to the combustion zone. Forced draft indicates the presence of a fan. Give the fan
horsepower if so equipped.
26.The amount of flue gas which can be recirculated, in standard cubic feet per minute. And the percentage of the flue
gas that can be recirculated at full load.
27.Generally, flue gas recirculation systems start up at a given load or temperature. Give that specification.
28. Where in relation to the burner/combustion zone is the flue gas reintroduced to the boiler?
29. Name of the manufacturer and the model number of the oxygen trim system.
30. Is there a data recorder? If so, describe it: What is recorded? How is it read?
31.Give the inside diameter or the dimensions of the stack. List the stack height above the ground and above the
building in which it is located, describe if the gas flow is vertically restricted. This information will be used in modeling
the impact of emissions on the ambient air.
32. Give the expected gas exit temperature at the end of the stack. Also to be used in modeling.
33.Indicate if other equipment is also vented to this stack. If other equipment is served by the stack, provide the flow
rates, operating parameters, fuel and combustion information that can be used to characterize the total emissions
from the stack.
34. Give the gas flow rate out of the stack in actual cubic feet per minute (acfm).
35.Supply calculations for all criteria pollutants, greenhouse gases and HAPs. Use AP42 or Manufacturers’ data to
complete your calculations.
U:\aq\ENGINEER\GENERIC\Forms 2010\Form19 Natural gas-Fired Boilers and Liquid Heaters.doc Revised 12/20/10

SUU / NOI Air Permit Application Trinity Consultants B
EMISSION CALCULATION

New Music Building NOI
Table B-1. SUU Music Building Potential to Emit
NOX CO PM10 PM2.5 VOC SO2 CO2e Total HAPs
Weil-Mclain Boilers 0.55 1.23 0.11 0.11 0.08 0.01 1744.84 2.75E-02
Natural Gas Water Heater 0.05 0.02 3.92E-03 3.92E-03 2.83E-03 3.09E-04 61.55 9.70E-04
Currently Permitted PTE1 23.66 27.51 16.67 16.66 2.82 1.00 33,188 0.63
Proposed PTE 24.26 28.76 16.78 16.77 2.90 1.01 34994.39 0.66
Major Source Thresholds2 250 250 250 250 250 250 75,000 10/25
Threshold Exceeded? No No No No No No No No
Modeling Limits3 40 100 15 ----40 --See HAPs
Summary
Threshold Exceeded?No No No No No No No No
1. AO DAQE-AN102710005-22
2. Criteria pollutant major source thresholds defined by 40 CFR 51.165(a)(1)(iv)(A) and 40 CFR 52.21(b)(1)(i)(b).
3. Modeling limit is stated in UDAQ Emissions Impact Assessment Guidelines under Table 1: Total Controlled Emission Rates for New Sources or Emissions Increase.
Emissions Potential Annual Emissions Estimate (tpy)
Southern Utah University Trinity Consultants 1 of 7
New Music Building NOI
Table B-2. Project Annual Potential HAP Emissions
2-Methylnaphthalene 8.29E-08 --No
3-Methylcholanthrene 6.22E-09 --No
7,12-Dimethylbenz(a)anthracene 5.52E-08 --No
Acenaphthene 6.22E-09 --No
Acenaphthylene 6.22E-09 --No
Anthracene 8.29E-09 --No
Benz(a)anthracene 6.22E-09 --No
Benzene 7.25E-06 0.32 No
Benzo(a)pyrene 4.14E-09 --No
Benzo(b)fluoranthene 6.22E-09 --No
Benzo(g,h,i)perylene 4.14E-09 --No
Chrysene 6.22E-09 --No
Dibenzo(a,h) anthracene 4.14E-09 --No
Dichlorobenzene 4.14E-06 --No
Fluoranthene 1.04E-08 --No
Fluorene 9.67E-09 --No
Formaldehyde 2.59E-04 0.06 No
Hexane 6.22E-03 34.90 No
Indeno(1,2,3-cd)pyrene 6.22E-09 --No
Naphthalene 2.11E-06 10.38 No
Phenanthrene 5.87E-08 --No
Pyrene 1.73E-08 --No
Toluene 1.17E-05 14.92 No
1. The Emission Threshold Value (ETV) assumes <50 m distance to the fenceline and vertically unrestricted releases.
Pollutant Project Hourly Emissions (lb/hr)Modeling
Required?ETV1
Southern Utah University Trinity Consultants 2 of 7
New Music Building NOI
Table B-3. Weil-Mclain Boilers
Parameter Value Unit
Boiler Input Heat Capacity:1 1.701 MMBtu/hr
Number of Boilers:1 2
Total Input Heat Capacity 3.402 MMBtu/hr
Total Run Time 8760 hr/yr
Natural Gas Higher Heating Value
(HHV)2 1,020 MMBtu/MMscf
Total Potential Natural Gas Usage 29.22 MMscf/yr
1. Per manufacteur spec sheet
2. Per AP-42 Chapter 1, Section 1.4 Natural Gas Combustion
Table B-4. Boiler Emission Factors
NOx 0.037 lb/MMBtu 1
CO 84 lb/MMscf 2
PM 7.6 lb/MMscf 2
PM10 7.6 lb/MMscf 2
PM2.5 7.6 lb/MMscf 2
SO2 0.6 lb/MMscf 2
VOC 5.5 lb/MMscf 2
NH3 3.2 lb/MMscf 3
CO2 117.0 lb/MMBtu 4
CH4 2.20E-03 lb/MMBtu 4
N2O 2.20E-04 lb/MMBtu 4
CO2e 117.1 lb/MMBtu 4
1. Per manufacteur spec sheet
2. Natural Gas Emission Factor from AP-42 Section 1.4
3. EPA's Final Report on Ammonia Emission Factors, August 1994, Table 7-4
4. GHG emission factors from Tables C-1 and C-2, 40 CFR 98, Subpart C. CO2e is the sum of GHG constituents
multiplied by their respective global warming potential (i.e. 1 for CO2, 28 for CH4, and 265 for N2O), per
Table A-1, 40 CFR 98, Subpart A.
Table B-5. Boiler Emissions
Hourly Annually
(lb/hr)(tpy)
NOx 0.13 0.55
CO 0.28 1.23
PM 0.03 0.11
PM10 0.03 0.11
PM2.5 0.03 0.11
SO2 2.00E-03 0.01
VOC 0.02 0.08
NH3 0.01 0.05
CO2 397.96 1743.05
CH4 0.01 0.03
N2O 7.50E-04 3.29E-03
CO2e 398.37 1744.84
Pollutant Emission Factor Units Reference
Pollutant
Natural Gas Emissions
Southern Utah University Trinity Consultants 3 of 7
New Music Building NOI
Table B-6. Miscellaneous Boiler HAP Emission Factors
Value Unit
Benzene 2.10E-03 lb/MMscf
Formaldehyde 7.50E-02 lb/MMscf
Naphthalene 6.10E-04 lb/MMscf
Toluene 3.40E-03 lb/MMscf
Acenaphthene 1.80E-06 lb/MMscf
Acenaphthylene 1.80E-06 lb/MMscf
Anthracene 2.40E-06 lb/MMscf
Benz(a)anthracene 1.80E-06 lb/MMscf
Benzo(g,h,i)perylene 1.20E-06 lb/MMscf
Chrysene 1.80E-06 lb/MMscf
Dibenzo(a,h) anthracene 1.20E-06 lb/MMscf
Fluoranthene 3.00E-06 lb/MMscf
Fluorene 2.80E-06 lb/MMscf
Phenanthrene 1.70E-05 lb/MMscf
Pyrene 5.00E-06 lb/MMscf
2-Methylnaphthalene 2.40E-05 lb/MMscf
3-Methylcholanthrene 1.80E-06 lb/MMscf
7,12-Dimethylbenz(a)anthracene 1.60E-05 lb/MMscf
Benzo(a)pyrene 1.20E-06 lb/MMscf
Benzo(b)fluoranthene 1.80E-06 lb/MMscf
Dichlorobenzene 1.20E-03 lb/MMscf
Hexane 1.8 lb/MMscf
Indeno(1,2,3-cd)pyrene 1.80E-06 lb/MMscf
1. Emission factors from AP-42 Section 1.4 Table 1.4-3 for natural gas combustion
Table B-7. Boiler HAP Emissions
Hourly Annually
(lb/hr)(tpy)
Benzene 7.00E-06 3.07E-05
Formaldehyde 2.50E-04 1.10E-03
Naphthalene 2.03E-06 8.91E-06
Toluene 1.13E-05 4.97E-05
Acenaphthene 6.00E-09 2.63E-08
Acenaphthylene 6.00E-09 2.63E-08
Anthracene 8.00E-09 3.51E-08
Benz(a)anthracene 6.00E-09 2.63E-08
Benzo(g,h,i)perylene 4.00E-09 1.75E-08
Chrysene 6.00E-09 2.63E-08
Dibenzo(a,h) anthracene 4.00E-09 1.75E-08
Fluoranthene 1.00E-08 4.38E-08
Fluorene 9.34E-09 4.09E-08
Phenanthrene 5.67E-08 2.48E-07
Pyrene 1.67E-08 7.30E-08
2-Methylnaphthalene 8.00E-08 3.51E-07
3-Methylcholanthrene 6.00E-09 2.63E-08
7,12-Dimethylbenz(a)anthracene 5.34E-08 2.34E-07
Benzo(a)pyrene 4.00E-09 1.75E-08
Benzo(b)fluoranthene 6.00E-09 2.63E-08
Dichlorobenzene 4.00E-06 1.75E-05
Hexane 6.00E-03 2.63E-02
Indeno(1,2,3-cd)pyrene 6.00E-09 2.63E-08
Total HAPS 6.28E-03 2.75E-02
Pollutant
Natural Gas Emissions
Pollutant Natural Gas1
Southern Utah University Trinity Consultants 4 of 7
New Music Building NOI
Table B-8. Natural Gas Water Heater
Parameter Value Unit
Input Heat Capacity1 0.12 MMBtu/hr
Total Run Time 8760 hr/yr
Natural Gas Higher
Heating Value (HHV)2 1,020 MMBtu/MMscf
Total Potential Natural
Gas Usage 1.03 MMscf/yr
1. Per manufacteur spec sheet
2. Per AP-42 Chapter 1, Section 1.4 Natural Gas Combustion
Table B-9. Heater Emission Factors
NOx 94 lb/MMscf 1
CO 40 lb/MMscf 1
PM 7.6 lb/MMscf 1
PM10 7.6 lb/MMscf 1
PM2.5 7.6 lb/MMscf 1
SO2 0.6 lb/MMscf 1
VOC 5.5 lb/MMscf 1
NH3 3.2 lb/MMscf 2
CO2 117.0 lb/MMBtu 3
CH4 2.20E-03 lb/MMBtu 3
N2O 2.20E-04 lb/MMBtu 3
CO2e 117.1 lb/MMBtu 3
2. EPA's Final Report on Ammonia Emission Factors, August 1994, Table 7-4
3. GHG emission factors from Tables C-1 and C-2, 40 CFR 98, Subpart C. CO2e is the sum of GHG constituents
multiplied by their respective global warming potential (i.e. 1 for CO2, 28 for CH4, and 265 for N2O), per
Table A-1, 40 CFR 98, Subpart A.
Table B-10. Heater Emissions
Hourly Annually
(lb/hr)(tpy)
NOx 0.01 0.05
CO 0.00 0.02
PM 0.00 3.92E-03
PM10 0.00 3.92E-03
PM2.5 0.00 3.92E-03
SO2 7.06E-05 3.09E-04
VOC 0.00 2.83E-03
NH3 0.00 1.65E-03
CO2 14.04 61.48
CH4 0.00 1.16E-03
N2O 2.65E-05 1.16E-04
CO2e 14.05 61.55
Pollutant Emission Factor Units
1. Natural Gas Emission Factor from AP-42 Section 1.4. While the unit has a 20ppm garantuee,
this value could not be accurately converted to lb/MMscf and thus AP-42 was conservatively used.
Reference
Pollutant
Natural Gas Emissions
Southern Utah University Trinity Consultants 5 of 7
New Music Building NOI
Table B-11. Miscellaneous Heater HAP Emission Factors
Value Unit
Benzene 2.10E-03 lb/MMscf
Formaldehyde 7.50E-02 lb/MMscf
Naphthalene 6.10E-04 lb/MMscf
Toluene 3.40E-03 lb/MMscf
Acenaphthene 1.80E-06 lb/MMscf
Acenaphthylene 1.80E-06 lb/MMscf
Anthracene 2.40E-06 lb/MMscf
Benz(a)anthracene 1.80E-06 lb/MMscf
Benzo(g,h,i)perylene 1.20E-06 lb/MMscf
Chrysene 1.80E-06 lb/MMscf
Dibenzo(a,h) anthracene 1.20E-06 lb/MMscf
Fluoranthene 3.00E-06 lb/MMscf
Fluorene 2.80E-06 lb/MMscf
Phenanthrene 1.70E-05 lb/MMscf
Pyrene 5.00E-06 lb/MMscf
2-Methylnaphthalene 2.40E-05 lb/MMscf
3-Methylcholanthrene 1.80E-06 lb/MMscf
2-Dimethylbenz(a)anthrace 1.60E-05 lb/MMscf
Benzo(a)pyrene 1.20E-06 lb/MMscf
Benzo(b)fluoranthene 1.80E-06 lb/MMscf
Dichlorobenzene 1.20E-03 lb/MMscf
Hexane 1.8 lb/MMscf
Indeno(1,2,3-cd)pyrene 1.80E-06 lb/MMscf
1. Emission factors from AP-42 Section 1.4 Table 1.4-3 for natural gas combustion
Table B-12. Heater HAP Emissions
Hourly Annually
(lb/hr)(tpy)
Benzene 2.47E-07 1.08E-06
Formaldehyde 8.82E-06 3.86E-05
Naphthalene 7.18E-08 3.14E-07
Toluene 4.00E-07 1.75E-06
Acenaphthene 2.12E-10 9.28E-10
Acenaphthylene 2.12E-10 9.28E-10
Anthracene 2.82E-10 1.24E-09
Benz(a)anthracene 2.12E-10 9.28E-10
Benzo(g,h,i)perylene 1.41E-10 6.18E-10
Chrysene 2.12E-10 9.28E-10
Dibenzo(a,h) anthracene 1.41E-10 6.18E-10
Fluoranthene 3.53E-10 1.55E-09
Fluorene 3.29E-10 1.44E-09
Phenanthrene 2.00E-09 8.76E-09
Pyrene 5.88E-10 2.58E-09
2-Methylnaphthalene 2.82E-09 1.24E-08
3-Methylcholanthrene 2.12E-10 9.28E-10
2-Dimethylbenz(a)anthrace 1.88E-09 8.24E-09
Benzo(a)pyrene 1.41E-10 6.18E-10
Benzo(b)fluoranthene 2.12E-10 9.28E-10
Dichlorobenzene 1.41E-07 6.18E-07
Hexane 2.12E-04 9.28E-04
Indeno(1,2,3-cd)pyrene 2.12E-10 9.28E-10
Total HAPS 2.21E-04 9.70E-04
Pollutant
Natural Gas Emissions
Pollutant Natural Gas1
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