DAQ-2024-011069

DAQE-AN120900003-24

{{$d1 }}

Jon Fetzer
Regence Blue Cross Blue Shield of Utah
2890 East Cottonwood Parkway
Cottonwood Heights, UT 84121
[e-mail]

Dear Mr. Fetzer:

Re: Approval Order: Administrative Amendment to Approval Order DAQE-AN0120900002-11 for a
10-Year Review and Permit Updates
Project Number: N120900003

The attached Approval Order (AO) is issued pursuant to the Division of Air Quality conducting a
10-year administrative review of this source and its respective AO. Regence Blue Cross Blue Shield
of Utah must comply with the requirements of this AO, all applicable state requirements (R307), and
Federal Standards.

The project engineer for this action is Katie Andersen, 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.

Sincerely,

{{$s }}

Bryce C. Bird
Director

BCB:KA:jg

cc: Salt Lake County Health Department

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

Kimberly D. Shelley
Executive Director

DIVISION OF AIR QUALITY
Bryce C. Bird
Director

September 10, 2024

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-AN120900003-24
Administrative Amendment to Approval Order
DAQE-AN0120900002-11 for a 10-Year Review
and Permit Updates

Prepared By
Katie Andersen, Engineer
[phone]
[e-mail]

Issued to
Regence Blue Cross Blue Shield of Utah - Data Center

Issued On
{{$d2 }}

Issued By

{{$s }}

Bryce C. Bird
Director
Division of Air Quality

September 10, 2024
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.................................................................................................................. 3
SUMMARY OF EMISSIONS .................................................................................................... 4
SECTION I: GENERAL PROVISIONS .................................................................................... 4
SECTION II: PERMITTED EQUIPMENT .............................................................................. 5
SECTION II: SPECIAL PROVISIONS ..................................................................................... 5
PERMIT HISTORY ..................................................................................................................... 6
ACRONYMS ................................................................................................................................. 7

DAQE-AN120900003-24
Page 3

GENERAL INFORMATION

CONTACT/LOCATION INFORMATION

Owner Name Source Name
Regence Blue Cross Blue Shield of Utah Regence Blue Cross Blue Shield of Utah - Data Center

Mailing Address Physical Address
2890 East Cottonwood Parkway 2890 East Cottonwood Parkway
Cottonwood Heights, UT 84121 Cottonwood Heights, UT 84121

Source Contact UTM Coordinates
Name: Jon Fetzer 431,472 m Easting
Phone: [phone],498,287 m Northing
Email: [e-mail] Datum NAD83
UTM Zone 12
SIC code 6324 (Hospital & Medical Service Plans)

SOURCE INFORMATION
General Description
Regence Blue Cross Blue Shield of Utah operates an insurance office in Cottonwood Heights, Salt Lake
County. Equipment at the site consists of four (4) boilers and two (2) standby emergency generators.

NSR Classification
10-Year Review

Source Classification
Located in Northern Wasatch Front O3 NAA, Salt Lake City UT PM2.5 NAA, Salt Lake County SO2
NAA
Salt Lake County
Airs Source Size: B

Applicable Federal Standards
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
This is a 10-Year Review to update the language, format, and layout of the Approval Order to match
current DAQ permitting standards.

DAQE-AN120900003-24
Page 4

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)
CO2 Equivalent -2022.00 3966.00
Carbon Monoxide 1.33 2.98
Nitrogen Oxides -3.02 7.06
Particulate Matter - PM10 -0.53 0.31
Particulate Matter - PM2.5 -0.53 0.31
Sulfur Dioxide 0 0.02
Volatile Organic Compounds 0.04 0.30

Hazardous Air Pollutant Change (lbs/yr) Total (lbs/yr)
Generic HAPs (CAS #GHAPS) 40 120
Change (TPY) Total (TPY)
Total HAPs 0.02 0.06

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] 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]

DAQE-AN120900003-24
Page 5

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 Regence Blue Cross Blue Shield of Utah Data Center
II.A.2 Various Natural Gas-Fired Boilers
Rating: less than 5 MMBtu/hr each Fuel: Natural Gas For information purposes II.A.3 Emergency Generator Engines Two (2) rated at 1,500 kW - each Fuel: diesel or fuel oil Manufacture Dates: Pre-1997 NSPS Applicability: None MACT Applicability: Subpart ZZZZ

SECTION II: SPECIAL PROVISIONS II.B REQUIREMENTS AND LIMITATIONS
II.B.1 The Regence Blue Cross Blue Shield of Utah Data Center plant shall be subject to the following II.B.1.a The owner/operator shall not visible emissions from the following emission points to exceed the following values: A. All boilers - 10% opacity. B. All other points - 20% opacity. [R307-401-8]
II.B.1.a.1 Opacity observations of emissions from stationary sources shall be conducted according to 40 CFR 60, Appendix A, Method 9. [R307-401-8] II.B.1.b 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. [40 CFR 63 Subpart ZZZZ, R307-401-8]
II.B.1.b.1 The sulfur content shall be determined by ASTM Method D-4294-89 or approved equivalent. Certification of other fuels shall be either by Regence Blue Cross Blue Shield of Utah's own testing or test reports from the fuel marketer. [R307-401-8]
DAQE-AN120900003-24
Page 6

II.B.1.c 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. [40 CFR 63 Subpart ZZZZ] II.B.1.c.1 To determine compliance with a 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 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]

PERMIT HISTORY

This Approval Order shall supersede (if a modification) or will be based on the following documents:
Supersedes AO DAQE-AN0120900002-11 dated August 9, 2011
DAQE-AN120900003-24
Page 7

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-

RN120900003
September 9, 2024

Jon Fetzer
Regence BlueCross BlueShield of Utah
2890 East Cottonwood Parkway
Cottonwood Heights, UT 84121
[e-mail]

Dear Jon Fetzer,

Re: Engineer Review: Administrative Amendment to Approval Order DAQE-AN0120900002-11 for
a 10-Year Review and Permit Updates
Project Number: N120900003

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 (NSR) permitting program. Regence
BlueCross BlueShield of Utah should complete this review within 10 business days of receipt.

Regence BlueCross BlueShield of Utah should contact Katie Andersen at [phone] if there are
questions or concerns with the review of the draft permit conditions. Upon resolution of your concerns,
please email Katie Andersen at [e-mail] the signed cover letter. Upon receipt of the
signed cover letter, the DAQ will prepare an Approval Order (AO) for signature by the DAQ Director.

If Regence BlueCross BlueShield of Utah does not respond to this letter within 10 business days, the
project will move forward without source concurrence. If Regence BlueCross BlueShield of Utah 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

Kimberly D. Shelley Executive Director

DIVISION OF AIR QUALITY
Bryce C. Bird
Director

State of Utah

SPENCER J. COX
Governor
DEIDRE HENDERSON
Lieutenant Governor
Lieutenant Governor

9/9/2024

Engineer Review N120900003: Regence Blue Cross Blue Shield of Utah- Data Center
September 6, 2024
Page 1
UTAH DIVISION OF AIR QUALITY
ENGINEER REVIEW

SOURCE INFORMATION

Project Number N120900003
Owner Name Regence BlueCross BlueShield of Utah
Mailing Address 2890 East Cottonwood Parkway
Cottonwood Heights, UT, 84121

Source Name Regence Blue Cross Blue Shield of Utah- Data Center
Source Location 2890 East Cottonwood Parkway
Cottonwood Heights, UT 84121

UTM Projection 431,472 m Easting, 4,498,287 m Northing
UTM Datum NAD83
UTM Zone UTM Zone 12
SIC Code 6324 (Hospital & Medical Service Plans)

Source Contact Jon Fetzer
Phone Number [phone]
Email [e-mail]

Billing Contact Jon Fetzer
Phone Number [phone]
Email [e-mail]

Project Engineer Katie Andersen, Engineer
Phone Number [phone]
Email [e-mail]

Notice of Intent (NOI) Submitted May 30, 2024
Date of Accepted Application July 29, 2024

Engineer Review N120900003: Regence Blue Cross Blue Shield of Utah- Data Center
September 6, 2024
Page 2
SOURCE DESCRIPTION

General Description
Regence Blue Cross Blue Shield of Utah operates an insurance office in Cottonwood Heights,
Salt Lake County. Equipment at the site consists of four (4) boilers and two (2) standby
emergency generators.

NSR Classification:
10 Year Review

Source Classification
Located in the Northern Wasatch Front O3 NAA, Salt Lake City UT PM2.5 NAA, and Salt Lake
County SO2 NAA
Salt Lake County
Airs Source Size: B

Applicable Federal Standards
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
Administrative Amendment to Approval Order DAQE-AN0120900002-11 for a 10-Year Review
and Permit Updates

Project Description
This is a 10-Year Review to update the language, format, and layout of the Approval Order to
match current DAQ permitting standards.

EMISSION IMPACT ANALYSIS
This is a 10-Year Review to update the language, format, and layout of the Approval Order. Emission estimates
have been updated to reflect the current equipment at the site. These recalculated emission estimates do not
represent an actual change in emissions, but an update to the PTE estimates using more accurate values.
Therefore, modeling is not required. [Last updated September 6, 2024]

Engineer Review N120900003: Regence Blue Cross Blue Shield of Utah- Data Center
September 6, 2024
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)
CO2 Equivalent 0 3966.00
Carbon Monoxide 1.33 2.98
Nitrogen Oxides -3.02 7.06
Particulate Matter - PM10 -0.53 0.31
Particulate Matter - PM2.5 -0.53 0.31
Sulfur Dioxide 0 0.02
Volatile Organic Compounds 0.04 0.30

Hazardous Air Pollutant Change (lbs/yr) Total (lbs/yr)
Generic HAPs (CAS #GHAPS) 40 120
Change (TPY) Total (TPY)
Total HAPs 0.02 0.06

Note: Change in emissions indicates the difference between previous AO and proposed modification.

Engineer Review N120900003: Regence Blue Cross Blue Shield of Utah- Data Center
September 6, 2024
Page 4
Review of BACT for New/Modified Emission Units

1. BACT review regarding 10-Year Review
This is a 10-Year Review to update the language, format, and layout of the Approval Order.
Equipment Item II.A.1 Boilers has been updated to reflect current boilers. The listed boilers are
exempted under R407-401-10 and are listed for informational purposes. The emissions have been
updated the reflect the current boilers at the source. Therefore, a BACT analysis is not required at
this time. [Last updated August 12, 2024]

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 N120900003: Regence Blue Cross Blue Shield of Utah- Data Center
September 6, 2024
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 Regence Blue Cross Blue Shield of Utah Data Center

II.A.2 Various Natural Gas-Fired Boilers
Rating: less than 5 MMBtu/hr each
Fuel: Natural Gas

For information purposes

II.A.3 Emergency Generator Engines
Two (2) rated at 1,500 kW - each
Fuel: diesel or fuel oil
Manufacture Dates: Pre-1997

NSPS Applicability: None
MACT Applicability: Subpart ZZZZ

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 The Regence Blue Cross Blue Shield of Utah Data Center plant shall be subject to the
following
II.B.1.a
NEW
The owner/operator shall not visible emissions from the following emission points to exceed
the following values:

A. All boilers - 10% opacity

B. All other points - 20% opacity. [R307-401-8]

II.B.1.a.1
NEW
Opacity observations of emissions from stationary sources shall be conducted according to 40
CFR 60, Appendix A, Method 9. [R307-401-8]

II.B.1.b
NEW
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. [40 CFR 63 Subpart ZZZZ,
R307-401-8]

Engineer Review N120900003: Regence Blue Cross Blue Shield of Utah- Data Center
September 6, 2024
Page 6
II.B.1.b.1
NEW
The sulfur content shall be determined by ASTM Method D-4294-89 or approved equivalent.
Certification of other fuels shall be either by Regence Blue Cross Blue Shield of Utah's own
testing or test reports from the fuel marketer. [R307-401-8]

II.B.1.c
NEW
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. [40 CFR 63 Subpart ZZZZ]

II.B.1.c.1
NEW
To determine compliance with a 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 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]

Engineer Review N120900003: Regence Blue Cross Blue Shield of Utah- Data Center
September 6, 2024
Page 7
PERMIT HISTORY

When issued, the approval order shall supersede (if a modification) or will be based on the
following documents:

Supersedes DAQE-AN0120900002-11 dated August 9, 2021

REVIEWER COMMENTS

1. Comment regarding 10-Year Review:
This is a 10-Year Review to update the language, format, and layout of Approval Order DAQE-
0120900002-11 dated August 9, 2011. The contact information and equipment list have been
updated at the source's request.

Equipment ID# II.A.2 of Approval Order DAQE-AN0120900002-11 specifics that there are two (2)
2.0 MMBtu/hr boilers and two (2) 2.25 MMBtu/hr boilers on site. The source has confirmed that two
(2) 1.6 MMBtu/hr boilers were installed instead of two (2) 2.25 MMBtu/hr boilers. The equipment
list in the 2024 Approval Order has been updated to reflect this change.

The updated boiler ratings resulted in an emission estimate update. The emissions from the boilers
were calculated using the updated ratings and emission factors from AP-42 Table 1.4-1, AP-42
Table 1.4-2, AP-42 Table 3.3-1, and AP-42 Table 3.4-1. Additionally, emissions from the two (2)
emergency engines were recalculated using AP-42 Chapter 3.4: Large Stationary Diesel and All
Stationary Dual-fuel Engines.

The Summary of Emissions table on page 3 of the current Approval Order shows the recalculated
emission estimates. The change in values is not an actual change in emissions, but an update to the
PTE estimates using more accurate values.

The following Requirements and Limitations changes have occurred: II.B.1.a has been split into two
conditions, II.B.1.b has been split into two conditions, and II.B.1.c has been removed from the
permit. Condition II.B.1.c from DAQE-AN0120900002-11 was removed because the condition no
longer applies as the emergency generator engine has been installed. This update includes a new
Condition II.B.1.c and Condition II.B.1.c.1 which limits the hours of operation of the emergency
generators as required by MACT Subpart ZZZZ. [Last updated September 6, 2024]

2. Comment regarding Federal Rule Applicability:
40 CFR 60 Subpart IIII. Standards of Performance for Stationary Compression Ignition Internal
Combustion Engines.
40 CFR 60 Subpart IIII applies to manufacturers, owners, and operators of stationary compression
ignition (CI) internal combustion engines (ICE) as specified in paragraphs (a)(1) through (3) of this
section. For the purposes of this subpart, the date that construction commences is the date the engine
is ordered by the owner or operator.
(1) Manufacturers of stationary CI ICE with a displacement of less than 30 liters per cylinder where
the model year is:
(i) 2007 or later, for engines that are not fire pump engines,
(ii) The model year listed in table 3 to this subpart or later model year, for fire pump engines.
(2) Owners and operators of stationary CI ICE that commence construction after July 11, 2005
where the stationary CI ICE are:
(i) Manufactured after April 1, 2006 and are not fire pump engines, or

Engineer Review N120900003: Regence Blue Cross Blue Shield of Utah- Data Center
September 6, 2024
Page 8
(ii) Manufactured as a certified National Fire Protection Association (NFPA) fire pump engine after
July 1, 2006.
(3) Owners and operators of stationary CI ICE that modify or reconstruct their stationary CI ICE
after July 11, 2005.

The emergency generator engines commenced construction in 1997 and 2011, and were
manufactured in 1995 and 1996, respectively. This subpart does not apply to the engines at this site.

40 CFR 63 Subpart ZZZZ. National Emissions Standards for Hazardous Air Pollutants for Stationary
Reciprocating Internal Combustion Engines
40 CFR 63 Subpart ZZZZ applies to owners/operators of stationary RICE at a major or area source
of HAP emissions. Regence BlueCross BlueShield of Utah is an area source of HAP emissions.
Therefore, this subpart applies to the source. [Last updated July 29, 2024]

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 nor is it a Title IV source. This source is not subject to 40 CFR 60
(NSPS) nor 40 CFR 61 (NESHAP) regulations. This source is subject to 40 CFR 63 (MACT)
Subparts A and ZZZZ. MACT Subpart ZZZZ exempts a source from the obligation to obtain a
permit under 40 CFR Part 70 (Title V permit) if the source is not otherwise required by law to obtain
a permit. There are no other reasons why the source should be required to obtain a Title V permit.
Thus, Title V does not apply to this source. [Last updated July 29, 2024]

Engineer Review N120900003: Regence Blue Cross Blue Shield of Utah- Data Center
September 6, 2024
Page 9
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

DAQE-

RN120900003 September 9, 2024 Jon Fetzer
Regence BlueCross BlueShield of Utah 2890 East Cottonwood Parkway Cottonwood Heights, UT 84121
[e-mail] Dear Jon Fetzer,
Re: Engineer Review: Administrative Amendment to Approval Order DAQE-AN0120900002-11 for a 10-Year Review and Permit Updates Project Number: N120900003 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 (NSR) permitting program. Regence BlueCross BlueShield of Utah should complete this review within 10 business days of receipt. Regence BlueCross BlueShield of Utah should contact Katie Andersen at [phone] if there are questions or concerns with the review of the draft permit conditions. Upon resolution of your concerns,
please email Katie Andersen at [e-mail] the signed cover letter. Upon receipt of the signed cover letter, the DAQ will prepare an Approval Order (AO) for signature by the DAQ Director. If Regence BlueCross BlueShield of Utah does not respond to this letter within 10 business days, the project will move forward without source concurrence. If Regence BlueCross BlueShield of Utah 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
Kimberly D. Shelley Executive Director DIVISION OF AIR QUALITY Bryce C. Bird Director
State of Utah
SPENCER J. COX Governor DEIDRE HENDERSON Lieutenant Governor

Engineer Review N120900003: Regence Blue Cross Blue Shield of Utah- Data Center September 6, 2024 Page 1
UTAH DIVISION OF AIR QUALITY
ENGINEER REVIEW

SOURCE INFORMATION
Project Number N120900003 Owner Name Regence BlueCross BlueShield of Utah Mailing Address 2890 East Cottonwood Parkway
Cottonwood Heights, UT, 84121 Source Name Regence Blue Cross Blue Shield of Utah- Data Center
Source Location 2890 East Cottonwood Parkway Cottonwood Heights, UT 84121
UTM Projection 431,472 m Easting, 4,498,287 m Northing UTM Datum NAD83 UTM Zone UTM Zone 12 SIC Code 6324 (Hospital & Medical Service Plans) Source Contact Jon Fetzer Phone Number [phone] Email [e-mail] Billing Contact Jon Fetzer Phone Number [phone]
Email [e-mail] Project Engineer Katie Andersen, Engineer
Phone Number [phone] Email [e-mail]
Notice of Intent (NOI) Submitted May 30, 2024 Date of Accepted Application July 29, 2024

Engineer Review N120900003: Regence Blue Cross Blue Shield of Utah- Data Center September 6, 2024 Page 2
SOURCE DESCRIPTION General Description
Regence Blue Cross Blue Shield of Utah operates an insurance office in Cottonwood Heights, Salt Lake County. Equipment at the site consists of four (4) boilers and two (2) standby emergency generators.
NSR Classification: 10 Year Review Source Classification Located in the Northern Wasatch Front O3 NAA, Salt Lake City UT PM2.5 NAA, and Salt Lake County SO2 NAA Salt Lake County Airs Source Size: B Applicable Federal Standards
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 Administrative Amendment to Approval Order DAQE-AN0120900002-11 for a 10-Year Review
and Permit Updates Project Description This is a 10-Year Review to update the language, format, and layout of the Approval Order to match current DAQ permitting standards. EMISSION IMPACT ANALYSIS This is a 10-Year Review to update the language, format, and layout of the Approval Order. Emission estimates have been updated to reflect the current equipment at the site. These recalculated emission estimates do not
represent an actual change in emissions, but an update to the PTE estimates using more accurate values. Therefore, modeling is not required. [Last updated September 6, 2024]

Engineer Review N120900003: Regence Blue Cross Blue Shield of Utah- Data Center September 6, 2024 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) CO2 Equivalent 0 3966.00 Carbon Monoxide 1.33 2.98
Nitrogen Oxides -3.02 7.06
Particulate Matter - PM10 -0.53 0.31
Particulate Matter - PM2.5 -0.53 0.31
Sulfur Dioxide 0 0.02
Volatile Organic Compounds 0.04 0.30 Hazardous Air Pollutant Change (lbs/yr) Total (lbs/yr)
Generic HAPs (CAS #GHAPS) 40 120
Change (TPY) Total (TPY)
Total HAPs 0.02 0.06

Note: Change in emissions indicates the difference between previous AO and proposed modification.

Engineer Review N120900003: Regence Blue Cross Blue Shield of Utah- Data Center September 6, 2024 Page 4
Review of BACT for New/Modified Emission Units 1. BACT review regarding 10-Year Review
This is a 10-Year Review to update the language, format, and layout of the Approval Order. Equipment Item II.A.1 Boilers has been updated to reflect current boilers. The listed boilers are exempted under R407-401-10 and are listed for informational purposes. The emissions have been
updated the reflect the current boilers at the source. Therefore, a BACT analysis is not required at this time. [Last updated August 12, 2024]
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]

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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 Regence Blue Cross Blue Shield of Utah Data Center
II.A.2 Various Natural Gas-Fired Boilers Rating: less than 5 MMBtu/hr each Fuel: Natural Gas
For information purposes

II.A.3 Emergency Generator Engines Two (2) rated at 1,500 kW - each Fuel: diesel or fuel oil Manufacture Dates: Pre-1997
NSPS Applicability: None
MACT Applicability: Subpart ZZZZ
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 The Regence Blue Cross Blue Shield of Utah Data Center plant shall be subject to the following
II.B.1.a
NEW
The owner/operator shall not visible emissions from the following emission points to exceed
the following values: A. All boilers - 10% opacity
B. All other points - 20% opacity. [R307-401-8]
II.B.1.a.1 NEW Opacity observations of emissions from stationary sources shall be conducted according to 40 CFR 60, Appendix A, Method 9. [R307-401-8]
II.B.1.b
NEW
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. [40 CFR 63 Subpart ZZZZ, R307-401-8]

Engineer Review N120900003: Regence Blue Cross Blue Shield of Utah- Data Center September 6, 2024 Page 6
II.B.1.b.1 NEW The sulfur content shall be determined by ASTM Method D-4294-89 or approved equivalent. Certification of other fuels shall be either by Regence Blue Cross Blue Shield of Utah's own testing or test reports from the fuel marketer. [R307-401-8]

II.B.1.c NEW 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. [40 CFR 63 Subpart ZZZZ]
II.B.1.c.1
NEW
To determine compliance with a 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 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]

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PERMIT HISTORY When issued, the approval order shall supersede (if a modification) or will be based on the
following documents: Supersedes DAQE-AN0120900002-11 dated August 9, 2021
REVIEWER COMMENTS
1. Comment regarding 10-Year Review:
This is a 10-Year Review to update the language, format, and layout of Approval Order DAQE-0120900002-11 dated August 9, 2011. The contact information and equipment list have been updated at the source's request.
Equipment ID# II.A.2 of Approval Order DAQE-AN0120900002-11 specifics that there are two (2)
2.0 MMBtu/hr boilers and two (2) 2.25 MMBtu/hr boilers on site. The source has confirmed that two (2) 1.6 MMBtu/hr boilers were installed instead of two (2) 2.25 MMBtu/hr boilers. The equipment list in the 2024 Approval Order has been updated to reflect this change.
The updated boiler ratings resulted in an emission estimate update. The emissions from the boilers
were calculated using the updated ratings and emission factors from AP-42 Table 1.4-1, AP-42 Table 1.4-2, AP-42 Table 3.3-1, and AP-42 Table 3.4-1. Additionally, emissions from the two (2) emergency engines were recalculated using AP-42 Chapter 3.4: Large Stationary Diesel and All
Stationary Dual-fuel Engines.
The Summary of Emissions table on page 3 of the current Approval Order shows the recalculated emission estimates. The change in values is not an actual change in emissions, but an update to the PTE estimates using more accurate values. The following Requirements and Limitations changes have occurred: II.B.1.a has been split into two conditions, II.B.1.b has been split into two conditions, and II.B.1.c has been removed from the
permit. Condition II.B.1.c from DAQE-AN0120900002-11 was removed because the condition no longer applies as the emergency generator engine has been installed. This update includes a new Condition II.B.1.c and Condition II.B.1.c.1 which limits the hours of operation of the emergency generators as required by MACT Subpart ZZZZ. [Last updated September 6, 2024] 2. Comment regarding Federal Rule Applicability: 40 CFR 60 Subpart IIII. Standards of Performance for Stationary Compression Ignition Internal Combustion Engines. 40 CFR 60 Subpart IIII applies to manufacturers, owners, and operators of stationary compression ignition (CI) internal combustion engines (ICE) as specified in paragraphs (a)(1) through (3) of this section. For the purposes of this subpart, the date that construction commences is the date the engine
is ordered by the owner or operator. (1) Manufacturers of stationary CI ICE with a displacement of less than 30 liters per cylinder where the model year is:
(i) 2007 or later, for engines that are not fire pump engines, (ii) The model year listed in table 3 to this subpart or later model year, for fire pump engines. (2) Owners and operators of stationary CI ICE that commence construction after July 11, 2005
where the stationary CI ICE are: (i) Manufactured after April 1, 2006 and are not fire pump engines, or

Engineer Review N120900003: Regence Blue Cross Blue Shield of Utah- Data Center September 6, 2024 Page 8
(ii) Manufactured as a certified National Fire Protection Association (NFPA) fire pump engine after July 1, 2006.
(3) Owners and operators of stationary CI ICE that modify or reconstruct their stationary CI ICE after July 11, 2005. The emergency generator engines commenced construction in 1997 and 2011, and were manufactured in 1995 and 1996, respectively. This subpart does not apply to the engines at this site.
40 CFR 63 Subpart ZZZZ. National Emissions Standards for Hazardous Air Pollutants for Stationary Reciprocating Internal Combustion Engines 40 CFR 63 Subpart ZZZZ applies to owners/operators of stationary RICE at a major or area source of HAP emissions. Regence BlueCross BlueShield of Utah is an area source of HAP emissions.
Therefore, this subpart applies to the source. [Last updated July 29, 2024] 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 nor is it a Title IV source. This source is not subject to 40 CFR 60 (NSPS) nor 40 CFR 61 (NESHAP) regulations. This source is subject to 40 CFR 63 (MACT) Subparts A and ZZZZ. MACT Subpart ZZZZ exempts a source from the obligation to obtain a permit under 40 CFR Part 70 (Title V permit) if the source is not otherwise required by law to obtain a permit. There are no other reasons why the source should be required to obtain a Title V permit. Thus, Title V does not apply to this source. [Last updated July 29, 2024]

Engineer Review N120900003: Regence Blue Cross Blue Shield of Utah- Data Center September 6, 2024 Page 9
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
Pollution TotallowerNOX 7.06
increase CO 2.98decreasePM100.31decreasePM2.5 0.31
same SO2 0.02
increase VOC 0.30
same Lead 0.00
increase HAP 0.06
decrease CO2e 3,966
Heating Value of Natural Gas 1020 BTU/scf or MMBtu/MMscf
Equipment Details
Rating 2 MMBtu/hour NOx Size Table 1.4-1 lb/10^6 scf lb/MMBtu lb/hr Ton/year CheckOperational Hours 8,760 hours/year >100 MMBtu/hr Uncontrolled - Pre NSPS (Subparts D & Db)280 0.2745 0.44 1.92FiringNormal>100 MMBtu/hr Uncontrolled - Post NSPS (Subparts D & Db)190 0.1863 0.30 1.31>100 MMBtu/hr Controlled - Low Nox burners 140 0.1373 0.22 0.96
Criteria Pollutant Concentration(ppm)
Emission Factor(lb/10^6 scf)
EmissionRate(lbs/hr)
EmissionTotal(tons/year)Reference >100 MMBtu/hr Controlled - Flue gas recirculation (FGR)100 0.0980 0.16 0.69 MatchNOX1000.16 0.69 <100 MMBtu/hr Uncontrolled 100 0.0980 0.16 0.69 MatchCO840.13 0.58 <100 MMBtu/hr Controlled - Low Nox burners 50 0.0490 0.08 0.34PM107.6 0.01 0.05 <100 MMBtu/hr Controlled - Low Nox burners/FGR 32 0.0314 0.05 0.22PM2.5 7.6 0.01 0.05 Tangential-Fired Uncontrolled 170 0.1667 0.27 1.17SO20.6 0.00 0.00 Tangential-Fired Controlled - FGR 76 0.0745 0.12 0.52VOC5.5 0.01 0.04Lead0.0005 0.00 0.00 CO Size Table 1.4-1 lb/10^6 scf lb/MMBtu lb/hr Ton/year CheckHAP0.00 0.01 See Below >100 MMBtu/hr Uncontrolled - Pre NSPS (Subparts D & Db)84 0.0824 0.13 0.58 Match>100 MMBtu/hr Uncontrolled - Post NSPS (Subparts D & Db)84 0.0824 0.13 0.58 Match
Green House Gas Pollutant
Global Warming Potential
Emission Factor(lb/10^6 scf)
EmissionRate(lbs/hr)
EmissionTotal(tons/year)Reference >100 MMBtu/hr Controlled - Low Nox burners 84 0.0824 0.13 0.58 MatchCO2 (mass basis)1 120,000 188 824 >100 MMBtu/hr Controlled - Flue gas recirculation (FGR)84 0.0824 0.13 0.58 MatchMethane (mass basis)25 2.3 0.00 0.02 <100 MMBtu/hr Uncontrolled 84 0.0824 0.13 0.58 MatchN2O (mass basis)298 2.2 0.00 0.02 <100 MMBtu/hr Controlled - Low Nox burners 84 0.0824 0.13 0.58 MatchCO2e829<100 MMBtu/hr Controlled - Low Nox burners/FGR 84 0.0824 0.13 0.58 MatchTangential-Fired Uncontrolled 24 0.0235 0.04 0.16
Hazardous Air Pollutant
EmissionRate(lbs/hr)
EmissionTotal(tons/year)Reference Tangential-Fired Controlled - FGR 98 0.0961 0.15 0.672-Methylnaphthalene 2.40E-05 3.76E-08 1.65E-073-Methylchloranthrene 1.80E-06 2.82E-09 1.24E-08 Any Size Table 1.4-2 lb/10^6 scf lb/MMBtu lb/hr Ton/year Check7,12-Dimethylbenz(a)anthracene 1.60E-05 2.51E-08 1.10E-07 CO2 120,000 117.6471 188 824 MatchAcenaphthene1.80E-06 2.82E-09 1.24E-08 Lead 0.0005 0.0000 0.00 0.00 MatchAcenaphthylene1.80E-06 2.82E-09 1.24E-08 N2O Uncontrolled 2.2 0.0022 0.00 0.02 MatchAnthracene2.40E-06 3.76E-09 1.65E-08 Controlled - Low Nox burners 0.64 0.0006 0.00 0.00Benz(a)anthracene 1.80E-06 2.82E-09 1.24E-08 PM (total)7.6 0.0075 0.01 0.05 MatchBenzene2.10E-03 3.29E-06 1.44E-05 PM (cond)5.7 0.0056 0.01 0.04Benzo(a)pyrene 1.20E-06 1.88E-09 8.24E-09 PM (filter)1.9 0.0019 0.00 0.01Benzo(b)fluoranthene 1.80E-06 2.82E-09 1.24E-08 SO2 0.6 0.0006 0.00 0.00 MatchBenzo(g,h,i)perylene 1.20E-06 1.88E-09 8.24E-09 TOC 11 0.0108 0.02 0.08Benzo(k)fluoranthene 1.80E-06 2.82E-09 1.24E-08 Methane 2.3 0.0023 0.00 0.02 MatchChrysene1.80E-06 2.82E-09 1.24E-08 VOC 5.5 0.0054 0.01 0.04 MatchDibenzo(a,h)anthracene 1.20E-06 1.88E-09 8.24E-09Dichlorobenzene1.20E-03 1.88E-06 8.24E-06 Global Warming Potential lb/hr Ton/yearFluoranthene3.00E-06 4.71E-09 2.06E-08 CO2 1 188 824Fluorene2.80E-06 4.39E-09 1.92E-08 Methane 25 0 0Formaldehyde7.50E-02 1.18E-04 5.15E-04 N2O 298 1 5Hexane1.80E+00 2.82E-03 1.24E-02 CO2e Total CO2e 189 829 MatchIndeno(1,2,3-cd)pyrene 1.80E-06 2.82E-09 1.24E-08Naphthalene6.10E-04 9.57E-07 4.19E-06 HAP - Organic Table 1.4-3 lb/10^6 scf lb/MMBtu lb/hr Ton/year CheckPhenanathrene1.70E-05 2.67E-08 1.17E-07 2-Methylnaphthalene 2.40E-05 2.35E-08 3.76E-08 1.65E-07 MatchPyrene5.00E-06 7.84E-09 3.44E-08 3-Methylchloranthrene 1.80E-06 1.76E-09 2.82E-09 1.24E-08 MatchToluene3.40E-03 5.33E-06 2.34E-05 7,12-Dimethylbenz(a)anthracene 1.60E-05 1.57E-08 2.51E-08 1.10E-07 MatchArsenic2.00E-04 3.14E-07 1.37E-06 Acenaphthene 1.80E-06 1.76E-09 2.82E-09 1.24E-08 MatchBeryllium1.20E-05 1.88E-08 8.24E-08 Acenaphthylene 1.80E-06 1.76E-09 2.82E-09 1.24E-08 MatchCadmium1.10E-03 1.73E-06 7.56E-06 Anthracene 2.40E-06 2.35E-09 3.76E-09 1.65E-08 MatchChromium1.40E-03 2.20E-06 9.62E-06 Benz(a)anthracene 1.80E-06 1.76E-09 2.82E-09 1.24E-08 MatchCobalt8.40E-05 1.32E-07 5.77E-07 Benzene 2.10E-03 2.06E-06 3.29E-06 1.44E-05 MatchManganese3.80E-04 5.96E-07 2.61E-06 Benzo(a)pyrene 1.20E-06 1.18E-09 1.88E-09 8.24E-09 MatchMercury2.60E-04 4.08E-07 1.79E-06 Benzo(b)fluoranthene 1.80E-06 1.76E-09 2.82E-09 1.24E-08 MatchNickel2.10E-03 3.29E-06 1.44E-05 Benzo(g,h,i)perylene 1.20E-06 1.18E-09 1.88E-09 8.24E-09 MatchSelenium2.40E-05 3.76E-08 1.65E-07 Benzo(k)fluoranthene 1.80E-06 1.76E-09 2.82E-09 1.24E-08 MatchChrysene1.80E-06 1.76E-09 2.82E-09 1.24E-08 MatchDibenzo(a,h)anthracene 1.20E-06 1.18E-09 1.88E-09 8.24E-09 MatchDichlorobenzene1.20E-03 1.18E-06 1.88E-06 8.24E-06 MatchFluoranthene3.00E-06 2.94E-09 4.71E-09 2.06E-08 MatchFluorene2.80E-06 2.75E-09 4.39E-09 1.92E-08 MatchFormaldehyde7.50E-02 7.35E-05 1.18E-04 5.15E-04 MatchHexane1.80E+00 1.76E-03 2.82E-03 1.24E-02 MatchIndeno(1,2,3-cd)pyrene 1.80E-06 1.76E-09 2.82E-09 1.24E-08 MatchNaphthalene6.10E-04 5.98E-07 9.57E-07 4.19E-06 MatchPhenanathrene1.70E-05 1.67E-08 2.67E-08 1.17E-07 MatchPyrene5.00E-06 4.90E-09 7.84E-09 3.44E-08 MatchToluene3.40E-03 3.33E-06 5.33E-06 2.34E-05 Match
HAP - Metal Table 1.4-4 lb/10^6 scf lb/MMBtu lb/hr Ton/year CheckArsenic2.00E-04 1.96E-07 3.14E-07 1.37E-06 MatchBeryllium1.20E-05 1.18E-08 1.88E-08 8.24E-08 MatchCadmium1.10E-03 1.08E-06 1.73E-06 7.56E-06 MatchChromium1.40E-03 1.37E-06 2.20E-06 9.62E-06 MatchCobalt8.40E-05 8.24E-08 1.32E-07 5.77E-07 MatchManganese3.80E-04 3.73E-07 5.96E-07 2.61E-06Mercury2.60E-04 2.55E-07 4.08E-07 1.79E-06 MatchNickel2.10E-03 2.06E-06 3.29E-06 1.44E-05 MatchSelenium2.40E-05 2.35E-08 3.76E-08 1.65E-07 Match
Total HAP Total HAP lb/hr Ton/year Check0.00 0.01 Match
ppm to lb/MMBtu Conversion.
Source: AQMD Permit Sample Evaluation Natural Gas Fired Boiler 5-20 MMBTU/HR, 2007
Nox Molecular Weight 46.1 lb/lb-moleCO Molecular Weight 28.01 lb/lb-mole
Concentration lb/MMBtu lb/hr Ton/year CheckNox000.00 0.00CO000.00 0.00
AP-42 Table 1.4-3
AP-42 Table 1.4-4
Natural Gas-Fired Boilers & Heaters
Manufacturer Dataor AP-42 Table 1.4-1
AP-42 Table 1.4-2
AP-42 Table 1.4-2&Table A-1 toSubpart A of Part 98
Emission Factor(lb/10^6 scf)
Page 2 of Version 1.0 November 29, 2018
Heating Value of Natural Gas 1020 BTU/scf or MMBtu/MMscf
Equipment Details
Rating 2 MMBtu/hour NOx Size Table 1.4-1 lb/10^6 scf lb/MMBtu lb/hr Ton/year CheckOperational Hours 8,760 hours/year >100 MMBtu/hr Uncontrolled - Pre NSPS (Subparts D & Db)280 0.2745 0.55 2.40FiringNormal>100 MMBtu/hr Uncontrolled - Post NSPS (Subparts D & Db)190 0.1863 0.37 1.63>100 MMBtu/hr Controlled - Low Nox burners 140 0.1373 0.27 1.20
Criteria Pollutant Concentration(ppm)
Emission Factor(lb/10^6 scf)
EmissionRate(lbs/hr)
EmissionTotal(tons/year)Reference >100 MMBtu/hr Controlled - Flue gas recirculation (FGR)100 0.0980 0.20 0.86 MatchNOX1000.20 0.86 <100 MMBtu/hr Uncontrolled 100 0.0980 0.20 0.86 MatchCO840.16 0.72 <100 MMBtu/hr Controlled - Low Nox burners 50 0.0490 0.10 0.43PM107.6 0.01 0.07 <100 MMBtu/hr Controlled - Low Nox burners/FGR 32 0.0314 0.06 0.27PM2.5 7.6 0.01 0.07 Tangential-Fired Uncontrolled 170 0.1667 0.33 1.46SO20.6 0.00 0.01 Tangential-Fired Controlled - FGR 76 0.0745 0.15 0.65VOC5.5 0.01 0.05Lead0.0005 0.00 0.00 CO Size Table 1.4-1 lb/10^6 scf lb/MMBtu lb/hr Ton/year CheckHAP0.00 0.02 See Below >100 MMBtu/hr Uncontrolled - Pre NSPS (Subparts D & Db)84 0.0824 0.16 0.72 Match>100 MMBtu/hr Uncontrolled - Post NSPS (Subparts D & Db)84 0.0824 0.16 0.72 Match
Green House Gas Pollutant
Global Warming Potential
Emission Factor(lb/10^6 scf)
EmissionRate(lbs/hr)
EmissionTotal(tons/year)Reference >100 MMBtu/hr Controlled - Low Nox burners 84 0.0824 0.16 0.72 MatchCO2 (mass basis)1 120,000 235 1,031 >100 MMBtu/hr Controlled - Flue gas recirculation (FGR)84 0.0824 0.16 0.72 MatchMethane (mass basis)25 2.3 0.00 0.02 <100 MMBtu/hr Uncontrolled 84 0.0824 0.16 0.72 MatchN2O (mass basis)298 2.2 0.00 0.02 <100 MMBtu/hr Controlled - Low Nox burners 84 0.0824 0.16 0.72 MatchCO2e1,037 <100 MMBtu/hr Controlled - Low Nox burners/FGR 84 0.0824 0.16 0.72 MatchTangential-Fired Uncontrolled 24 0.0235 0.05 0.21
Hazardous Air Pollutant
EmissionRate(lbs/hr)
EmissionTotal(tons/year)Reference Tangential-Fired Controlled - FGR 98 0.0961 0.19 0.842-Methylnaphthalene 2.40E-05 4.71E-08 2.06E-073-Methylchloranthrene 1.80E-06 3.53E-09 1.55E-08 Any Size Table 1.4-2 lb/10^6 scf lb/MMBtu lb/hr Ton/year Check7,12-Dimethylbenz(a)anthracene 1.60E-05 3.14E-08 1.37E-07 CO2 120,000 117.6471 235 1,031 MatchAcenaphthene1.80E-06 3.53E-09 1.55E-08 Lead 0.0005 0.0000 0.00 0.00 MatchAcenaphthylene1.80E-06 3.53E-09 1.55E-08 N2O Uncontrolled 2.2 0.0022 0.00 0.02 MatchAnthracene2.40E-06 4.71E-09 2.06E-08 Controlled - Low Nox burners 0.64 0.0006 0.00 0.01Benz(a)anthracene 1.80E-06 3.53E-09 1.55E-08 PM (total)7.6 0.0075 0.01 0.07 MatchBenzene2.10E-03 4.12E-06 1.80E-05 PM (cond)5.7 0.0056 0.01 0.05Benzo(a)pyrene 1.20E-06 2.35E-09 1.03E-08 PM (filter)1.9 0.0019 0.00 0.02Benzo(b)fluoranthene 1.80E-06 3.53E-09 1.55E-08 SO2 0.6 0.0006 0.00 0.01 MatchBenzo(g,h,i)perylene 1.20E-06 2.35E-09 1.03E-08 TOC 11 0.0108 0.02 0.09Benzo(k)fluoranthene 1.80E-06 3.53E-09 1.55E-08 Methane 2.3 0.0023 0.00 0.02 MatchChrysene1.80E-06 3.53E-09 1.55E-08 VOC 5.5 0.0054 0.01 0.05 MatchDibenzo(a,h)anthracene 1.20E-06 2.35E-09 1.03E-08Dichlorobenzene1.20E-03 2.35E-06 1.03E-05 Global Warming Potential lb/hr Ton/yearFluoranthene3.00E-06 5.88E-09 2.58E-08 CO2 1 235 1,031Fluorene2.80E-06 5.49E-09 2.40E-08 Methane 25 0 0Formaldehyde7.50E-02 1.47E-04 6.44E-04 N2O 298 1 6Hexane1.80E+00 3.53E-03 1.55E-02 CO2e Total CO2e 237 1,037 MatchIndeno(1,2,3-cd)pyrene 1.80E-06 3.53E-09 1.55E-08Naphthalene6.10E-04 1.20E-06 5.24E-06 HAP - Organic Table 1.4-3 lb/10^6 scf lb/MMBtu lb/hr Ton/year CheckPhenanathrene1.70E-05 3.33E-08 1.46E-07 2-Methylnaphthalene 2.40E-05 2.35E-08 4.71E-08 2.06E-07 MatchPyrene5.00E-06 9.80E-09 4.29E-08 3-Methylchloranthrene 1.80E-06 1.76E-09 3.53E-09 1.55E-08 MatchToluene3.40E-03 6.67E-06 2.92E-05 7,12-Dimethylbenz(a)anthracene 1.60E-05 1.57E-08 3.14E-08 1.37E-07 MatchArsenic2.00E-04 3.92E-07 1.72E-06 Acenaphthene 1.80E-06 1.76E-09 3.53E-09 1.55E-08 MatchBeryllium1.20E-05 2.35E-08 1.03E-07 Acenaphthylene 1.80E-06 1.76E-09 3.53E-09 1.55E-08 MatchCadmium1.10E-03 2.16E-06 9.45E-06 Anthracene 2.40E-06 2.35E-09 4.71E-09 2.06E-08 MatchChromium1.40E-03 2.75E-06 1.20E-05 Benz(a)anthracene 1.80E-06 1.76E-09 3.53E-09 1.55E-08 MatchCobalt8.40E-05 1.65E-07 7.21E-07 Benzene 2.10E-03 2.06E-06 4.12E-06 1.80E-05 MatchManganese3.80E-04 7.45E-07 3.26E-06 Benzo(a)pyrene 1.20E-06 1.18E-09 2.35E-09 1.03E-08 MatchMercury2.60E-04 5.10E-07 2.23E-06 Benzo(b)fluoranthene 1.80E-06 1.76E-09 3.53E-09 1.55E-08 MatchNickel2.10E-03 4.12E-06 1.80E-05 Benzo(g,h,i)perylene 1.20E-06 1.18E-09 2.35E-09 1.03E-08 MatchSelenium2.40E-05 4.71E-08 2.06E-07 Benzo(k)fluoranthene 1.80E-06 1.76E-09 3.53E-09 1.55E-08 MatchChrysene1.80E-06 1.76E-09 3.53E-09 1.55E-08 MatchDibenzo(a,h)anthracene 1.20E-06 1.18E-09 2.35E-09 1.03E-08 MatchDichlorobenzene1.20E-03 1.18E-06 2.35E-06 1.03E-05 MatchFluoranthene3.00E-06 2.94E-09 5.88E-09 2.58E-08 MatchFluorene2.80E-06 2.75E-09 5.49E-09 2.40E-08 MatchFormaldehyde7.50E-02 7.35E-05 1.47E-04 6.44E-04 MatchHexane1.80E+00 1.76E-03 3.53E-03 1.55E-02 MatchIndeno(1,2,3-cd)pyrene 1.80E-06 1.76E-09 3.53E-09 1.55E-08 MatchNaphthalene6.10E-04 5.98E-07 1.20E-06 5.24E-06 MatchPhenanathrene1.70E-05 1.67E-08 3.33E-08 1.46E-07 MatchPyrene5.00E-06 4.90E-09 9.80E-09 4.29E-08 MatchToluene3.40E-03 3.33E-06 6.67E-06 2.92E-05 Match
HAP - Metal Table 1.4-4 lb/10^6 scf lb/MMBtu lb/hr Ton/year CheckArsenic2.00E-04 1.96E-07 3.92E-07 1.72E-06 MatchBeryllium1.20E-05 1.18E-08 2.35E-08 1.03E-07 MatchCadmium1.10E-03 1.08E-06 2.16E-06 9.45E-06 MatchChromium1.40E-03 1.37E-06 2.75E-06 1.20E-05 MatchCobalt8.40E-05 8.24E-08 1.65E-07 7.21E-07 MatchManganese3.80E-04 3.73E-07 7.45E-07 3.26E-06 MatchMercury2.60E-04 2.55E-07 5.10E-07 2.23E-06 MatchNickel2.10E-03 2.06E-06 4.12E-06 1.80E-05 MatchSelenium2.40E-05 2.35E-08 4.71E-08 2.06E-07 Match
Total HAP Total HAP lb/hr Ton/year Check0.00 0.02 Match
ppm to lb/MMBtu Conversion.
Source: AQMD Permit Sample Evaluation Natural Gas Fired Boiler 5-20 MMBTU/HR, 2007
Nox Molecular Weight 46.1 lb/lb-moleCO Molecular Weight 28.01 lb/lb-mole
Concentration lb/MMBtu lb/hr Ton/year CheckNox000.00 0.00CO000.00 0.00
AP-42 Table 1.4-3
AP-42 Table 1.4-4
Natural Gas-Fired Boilers & Heaters
Manufacturer Dataor AP-42 Table 1.4-1
AP-42 Table 1.4-2
AP-42 Table 1.4-2&Table A-1 toSubpart A of Part 98
Emission Factor(lb/10^6 scf)
Page 3 of Version 1.0 November 29, 2018
7,000 BTU/hp-hrEquipment Details 2010Rating2,010 hp = (1500 kw)Table 3.3-1Operational Hours 100 hours/year <600 hpSulfur Content 15 ppm or 0.0015%lb/hp-hr lb/hr Ton/yearCheck EF x S lb/hp-hr lb/hr Ton/year CheckNox - Uncontrolled 0.031 62.31 3.12 0.024 48.24 2.41 Match
Criteria Pollutant
EmissionStandards(g/hp-hr)
Emission Factor(lb/hp-hr)
EmissionRate(lbs/hr)
Total(tons/year)Reference Nox - Controlled 0.013 26.13 1.31NOX0.024 48.24 2.41 CO 6.68E-03 13.43 0.67 5.50E-03 11.06 0.55 MatchCO5.50E-03 11.06 0.55 SO2 2.05E-03 4.12 0.21 8.09E-03 1.21E-05 0.02 0.00 Match Used>600 hp to allow for sulfur content of fuelPM107.00E-04 1.41 0.07 PM10 2.20E-03 4.42 0.22 0.0007 1.41 0.07 Match Table 3.3-1 does not allow for a sulfur content.PM2.5 7.00E-04 1.41 0.07 CO2 1.15E+00 2,312 116 1.16 2,332 117 Match To be more representatvie, Table 3.4-1 was used for all engine sizes.
VOC 6.42E-04 1.29 0.06 Aldehydes 4.63E-04 Not used, included in HAP below.SO2 1.21E-05 0.02 0.00 AP-42 Table 3.4-1 TOC 2.51E-03 5.05 0.25 7.05E-04 1.42 0.07 for engines >600 hp, TOC is 91% VOC & 9% methaneHAP0.02 0.00 See Below VOC 2.51E-03 5.05 0.25 91%6.42E-04 1.29 0.06 MatchMethane9%6.35E-05 0.13 0.01 Match
Green House Gas Pollutant
Global Warming Potential
Emission Factor(lb/hp-hr)
EmissionRate(lbs/hr)
Total(tons/year)Reference Exhaust 2.47E-03CO2 (mass basis)1 1.16 2,332 117 Evaporative 0.00Methane (mass basis)25 6.35E-05 0 0 Crankcase 4.41E-05CO2e117Refueling0.00
Hazardous Air Pollutant
EmissionRate(lbs/hr)
Total(tons/year)Reference HAP
Table 3.3-2<600 hp(lb/MMBtu)lb/hp-hr lb/hr Ton/year Check
Table 3.4-3>600 hp(lb/MMBtu)lb/hp-hr lb/hr Ton/year CheckBenzene7.76E-04 1.09E-02 5.46E-04 Benzene 9.33E-04 6.53E-06 1.31E-02 6.56E-04 7.76E-04 5.43E-06 1.09E-02 5.46E-04 MatchToluene2.81E-04 3.95E-03 1.98E-04 Toluene 4.09E-04 2.86E-06 5.75E-03 2.88E-04 2.81E-04 1.97E-06 3.95E-03 1.98E-04 MatchXylenes1.93E-04 2.72E-03 1.36E-04 Xylenes 2.85E-04 2.00E-06 4.01E-03 2.00E-04 1.93E-04 1.35E-06 2.72E-03 1.36E-04 Match1,3-Butadiene 3.91E-05 2.74E-07 5.50E-04 2.75E-05 MatchFormaldehyde7.89E-05 1.11E-03 5.55E-05 Formaldehyde 1.18E-03 8.26E-06 1.66E-02 8.30E-04 7.89E-05 5.52E-07 1.11E-03 5.55E-05 MatchAcetaldehyde2.52E-05 3.55E-04 1.77E-05 Acetaldehyde 7.67E-04 5.37E-06 1.08E-02 5.40E-04 2.52E-05 1.76E-07 3.55E-04 1.77E-05 MatchAcrolein7.88E-06 1.11E-04 5.54E-06 Acrolein 9.25E-05 6.48E-07 1.30E-03 6.51E-05 7.88E-06 5.52E-08 1.11E-04 5.54E-06 MatchNaphthalene1.30E-04 1.83E-03 9.15E-05 Naphthalene 8.48E-05 5.94E-07 1.19E-03 5.97E-05 1.30E-04 9.10E-07 1.83E-03 9.15E-05 MatchAcenaphthylene9.23E-06 1.30E-04 6.49E-06 Acenaphthylene 5.06E-06 3.54E-08 7.12E-05 3.56E-06 9.23E-06 6.46E-08 1.30E-04 6.49E-06 MatchAcenaphthene4.68E-06 6.58E-05 3.29E-06 Acenaphthene 1.42E-06 9.94E-09 2.00E-05 9.99E-07 4.68E-06 3.28E-08 6.58E-05 3.29E-06 MatchFluorene1.28E-05 1.80E-04 9.00E-06 Fluorene 2.92E-05 2.04E-07 4.11E-04 2.05E-05 1.28E-05 8.96E-08 1.80E-04 9.00E-06 MatchPhenanthrene4.08E-05 5.74E-04 2.87E-05 Phenanthrene 2.94E-05 2.06E-07 4.14E-04 2.07E-05 4.08E-05 2.86E-07 5.74E-04 2.87E-05 MatchAnthracene1.23E-06 1.73E-05 8.65E-07 Anthracene 1.87E-06 1.31E-08 2.63E-05 1.32E-06 1.23E-06 8.61E-09 1.73E-05 8.65E-07 MatchFluoranthene4.03E-06 5.67E-05 2.84E-06 Fluoranthene 7.61E-06 5.33E-08 1.07E-04 5.35E-06 4.03E-06 2.82E-08 5.67E-05 2.84E-06 MatchPyrene3.71E-06 5.22E-05 2.61E-06 Pyrene 4.78E-06 3.35E-08 6.73E-05 3.36E-06 3.71E-06 2.60E-08 5.22E-05 2.61E-06 MatchBenz(a)anthracene 6.22E-07 8.75E-06 4.38E-07 Benz(a)anthracene 1.68E-06 1.18E-08 2.36E-05 1.18E-06 6.22E-07 4.35E-09 8.75E-06 4.38E-07 MatchChrysene1.53E-06 2.15E-05 1.08E-06 Chrysene 3.53E-07 2.47E-09 4.97E-06 2.48E-07 1.53E-06 1.07E-08 2.15E-05 1.08E-06 MatchBenzo(b)fluoranthene 1.11E-06 1.56E-05 7.81E-07 Benzo(b)fluoranthene 9.91E-08 6.94E-10 1.39E-06 6.97E-08 1.11E-06 7.77E-09 1.56E-05 7.81E-07 MatchBenzo(k)fluoranthene 2.18E-07 3.07E-06 1.53E-07 Benzo(k)fluoranthene 1.55E-07 1.09E-09 2.18E-06 1.09E-07 2.18E-07 1.53E-09 3.07E-06 1.53E-07 MatchBenzo(a)pyrene 2.57E-07 3.62E-06 1.81E-07 Benzo(a)pyrene 1.88E-07 1.32E-09 2.65E-06 1.32E-07 2.57E-07 1.80E-09 3.62E-06 1.81E-07 MatchIndeno(1,2,3-cd)pyrene 4.14E-07 5.82E-06 2.91E-07 Indeno(1,2,3-cd)pyrene 3.75E-07 2.63E-09 5.28E-06 2.64E-07 4.14E-07 2.90E-09 5.82E-06 2.91E-07 MatchDibenz(a,h)anthracene 3.46E-07 4.87E-06 2.43E-07 Dibenz(a,h)anthracene 5.83E-07 4.08E-09 8.20E-06 4.10E-07 3.46E-07 2.42E-09 4.87E-06 2.43E-07 MatchBenzo(g,h,l)perylene 5.56E-07 7.82E-06 3.91E-07 Benzo(g,h,l)perylene 4.89E-07 3.42E-09 6.88E-06 3.44E-07 5.56E-07 3.89E-09 7.82E-06 3.91E-07 Match
AP-42 Table 3.3-1& Table 3.4-1
Emission Factor(lb/MMBtu)
AP-42 Table 3.3-2,Table 3.4-3, &Table 3.4-4
(1,3-Butadiene will not popluate if the engine size is greater than 600 hp. AP-42 does not list 1,3-Butadiene for engines greater than 600 hp.)
Diesel-Fired Engines
Emergency Engines should equal 100 hours of operation per year
Table 3.4-1>600 hp
Manufacturer Data,AP-42 Table 3.3-1,& Table 3.4-1
Page 4 of Version 1.1 February 21, 2019
7,000 BTU/hp-hrEquipment DetailsRating 2,010 hp = (1500 kw)Table 3.3-1Operational Hours 100 hours/year <600 hpSulfur Content 15 ppm or 0.0015%lb/hp-hr lb/hr Ton/yearCheck EF x S lb/hp-hr lb/hr Ton/year CheckNox - Uncontrolled 0.031 62.31 3.12 0.024 48.24 2.41 Match
Criteria Pollutant
EmissionStandards(g/hp-hr)
Emission Factor(lb/hp-hr)
EmissionRate(lbs/hr)
Total(tons/year)Reference Nox - Controlled 0.013 26.13 1.31NOX0.024 48.24 2.41 CO 6.68E-03 13.43 0.67 5.50E-03 11.06 0.55 MatchCO5.50E-03 11.06 0.55 SO2 2.05E-03 4.12 0.21 8.09E-03 1.21E-05 0.02 0.00 Match Used>600 hp to allow for sulfur content of fuelPM107.00E-04 1.41 0.07 PM10 2.20E-03 4.42 0.22 0.0007 1.41 0.07 Match Table 3.3-1 does not allow for a sulfur content.PM2.5 7.00E-04 1.41 0.07 CO2 1.15E+00 2,312 116 1.16 2,332 117 Match To be more representatvie, Table 3.4-1 was used for all engine sizes.
VOC 6.42E-04 1.29 0.06 Aldehydes 4.63E-04 Not used, included in HAP below.SO2 1.21E-05 0.02 0.00 AP-42 Table 3.4-1 TOC 2.51E-03 5.05 0.25 7.05E-04 1.42 0.07 for engines >600 hp, TOC is 91% VOC & 9% methaneHAP0.02 0.00 See Below VOC 2.51E-03 5.05 0.25 91%6.42E-04 1.29 0.06 MatchMethane9%6.35E-05 0.13 0.01 Match
Green House Gas Pollutant
Global Warming Potential
Emission Factor(lb/hp-hr)
EmissionRate(lbs/hr)
Total(tons/year)Reference Exhaust 2.47E-03CO2 (mass basis)1 1.16 2,332 117 Evaporative 0.00Methane (mass basis)25 6.35E-05 0 0 Crankcase 4.41E-05CO2e117Refueling0.00
Hazardous Air Pollutant
EmissionRate(lbs/hr)
Total(tons/year)Reference HAP
Table 3.3-2<600 hp(lb/MMBtu)lb/hp-hr lb/hr Ton/year Check
Table 3.4-3>600 hp(lb/MMBtu)lb/hp-hr lb/hr Ton/year CheckBenzene7.76E-04 1.09E-02 5.46E-04 Benzene 9.33E-04 6.53E-06 1.31E-02 6.56E-04 7.76E-04 5.43E-06 1.09E-02 5.46E-04 MatchToluene2.81E-04 3.95E-03 1.98E-04 Toluene 4.09E-04 2.86E-06 5.75E-03 2.88E-04 2.81E-04 1.97E-06 3.95E-03 1.98E-04 MatchXylenes1.93E-04 2.72E-03 1.36E-04 Xylenes 2.85E-04 2.00E-06 4.01E-03 2.00E-04 1.93E-04 1.35E-06 2.72E-03 1.36E-04 Match1,3-Butadiene 3.91E-05 2.74E-07 5.50E-04 2.75E-05 MatchFormaldehyde7.89E-05 1.11E-03 5.55E-05 Formaldehyde 1.18E-03 8.26E-06 1.66E-02 8.30E-04 7.89E-05 5.52E-07 1.11E-03 5.55E-05 MatchAcetaldehyde2.52E-05 3.55E-04 1.77E-05 Acetaldehyde 7.67E-04 5.37E-06 1.08E-02 5.40E-04 2.52E-05 1.76E-07 3.55E-04 1.77E-05 MatchAcrolein7.88E-06 1.11E-04 5.54E-06 Acrolein 9.25E-05 6.48E-07 1.30E-03 6.51E-05 7.88E-06 5.52E-08 1.11E-04 5.54E-06 MatchNaphthalene1.30E-04 1.83E-03 9.15E-05 Naphthalene 8.48E-05 5.94E-07 1.19E-03 5.97E-05 1.30E-04 9.10E-07 1.83E-03 9.15E-05 MatchAcenaphthylene9.23E-06 1.30E-04 6.49E-06 Acenaphthylene 5.06E-06 3.54E-08 7.12E-05 3.56E-06 9.23E-06 6.46E-08 1.30E-04 6.49E-06 MatchAcenaphthene4.68E-06 6.58E-05 3.29E-06 Acenaphthene 1.42E-06 9.94E-09 2.00E-05 9.99E-07 4.68E-06 3.28E-08 6.58E-05 3.29E-06 MatchFluorene1.28E-05 1.80E-04 9.00E-06 Fluorene 2.92E-05 2.04E-07 4.11E-04 2.05E-05 1.28E-05 8.96E-08 1.80E-04 9.00E-06 MatchPhenanthrene4.08E-05 5.74E-04 2.87E-05 Phenanthrene 2.94E-05 2.06E-07 4.14E-04 2.07E-05 4.08E-05 2.86E-07 5.74E-04 2.87E-05 MatchAnthracene1.23E-06 1.73E-05 8.65E-07 Anthracene 1.87E-06 1.31E-08 2.63E-05 1.32E-06 1.23E-06 8.61E-09 1.73E-05 8.65E-07 MatchFluoranthene4.03E-06 5.67E-05 2.84E-06 Fluoranthene 7.61E-06 5.33E-08 1.07E-04 5.35E-06 4.03E-06 2.82E-08 5.67E-05 2.84E-06 MatchPyrene3.71E-06 5.22E-05 2.61E-06 Pyrene 4.78E-06 3.35E-08 6.73E-05 3.36E-06 3.71E-06 2.60E-08 5.22E-05 2.61E-06 MatchBenz(a)anthracene 6.22E-07 8.75E-06 4.38E-07 Benz(a)anthracene 1.68E-06 1.18E-08 2.36E-05 1.18E-06 6.22E-07 4.35E-09 8.75E-06 4.38E-07 MatchChrysene1.53E-06 2.15E-05 1.08E-06 Chrysene 3.53E-07 2.47E-09 4.97E-06 2.48E-07 1.53E-06 1.07E-08 2.15E-05 1.08E-06 MatchBenzo(b)fluoranthene 1.11E-06 1.56E-05 7.81E-07 Benzo(b)fluoranthene 9.91E-08 6.94E-10 1.39E-06 6.97E-08 1.11E-06 7.77E-09 1.56E-05 7.81E-07 MatchBenzo(k)fluoranthene 2.18E-07 3.07E-06 1.53E-07 Benzo(k)fluoranthene 1.55E-07 1.09E-09 2.18E-06 1.09E-07 2.18E-07 1.53E-09 3.07E-06 1.53E-07 MatchBenzo(a)pyrene 2.57E-07 3.62E-06 1.81E-07 Benzo(a)pyrene 1.88E-07 1.32E-09 2.65E-06 1.32E-07 2.57E-07 1.80E-09 3.62E-06 1.81E-07 MatchIndeno(1,2,3-cd)pyrene 4.14E-07 5.82E-06 2.91E-07 Indeno(1,2,3-cd)pyrene 3.75E-07 2.63E-09 5.28E-06 2.64E-07 4.14E-07 2.90E-09 5.82E-06 2.91E-07 MatchDibenz(a,h)anthracene 3.46E-07 4.87E-06 2.43E-07 Dibenz(a,h)anthracene 5.83E-07 4.08E-09 8.20E-06 4.10E-07 3.46E-07 2.42E-09 4.87E-06 2.43E-07 MatchBenzo(g,h,l)perylene 5.56E-07 7.82E-06 3.91E-07 Benzo(g,h,l)perylene 4.89E-07 3.42E-09 6.88E-06 3.44E-07 5.56E-07 3.89E-09 7.82E-06 3.91E-07 Match
AP-42 Table 3.3-1& Table 3.4-1
Emission Factor(lb/MMBtu)
AP-42 Table 3.3-2,Table 3.4-3, &Table 3.4-4
(1,3-Butadiene will not popluate if the engine size is greater than 600 hp. AP-42 does not list 1,3-Butadiene for engines greater than 600 hp.)
Diesel-Fired Engines
Emergency Engines should equal 100 hours of operation per year
Table 3.4-1>600 hp
Manufacturer Data,AP-42 Table 3.3-1,& Table 3.4-1
Page 5 of Version 1.1 February 21, 2019
Katie Andersen <[e-mail]>
FW: 12090 Follow up to air quality inspection
6 messages
Fetzer, Jon <[e-mail]>Thu, Jul 25, 2024 at 10:43 AM
To: Katie Andersen <[e-mail]>
Here was the last email I had with John.

Thanks!

Jon Fetzer
Facilities Manager- C&W at CAMBIA HEALTH SOLUTIONS
Direct: [phone]
[e-mail]
[e-mail]
2890 E Cottonwood PKWY,
Salt Lake City, Utah 84121| United States
cushmanwakefield.com
LinkedIn | Facebook | Twitter | YouTube | Google+ | Instagram

From: John Persons <[e-mail]>
Sent: Monday, March 11, 2024 1:42 PM
To: Fetzer, Jon <[e-mail]>
Subject: Re: 12090 Follow up to air quality inspecon

Jon,

Thanks for the quick response. I will begin to process this.

- Best Regards
John Persons
8/8/24, 1:51 PM State of Utah Mail - FW: 12090 Follow up to air quality inspection
https://mail.google.com/mail/u/0/?ik=0900585596&view=pt&search=all&permthid=thread-f:1805570092458770634&simpl=msg-f:1805570092458770…1/12

On Mon, Mar 11, 2024 at 1:35 PM Fetzer, Jon <[e-mail]> wrote:
Hi John,

Answers below in RED:

Are you the best point of contact for this source? Jon Fetzer

Can you confirm that the new boilers onsite are smaller or of equal size to the ones replaced? The new units are
equal sized or smaller.

What is the NOx ppm rating on the new and old boilers? I just need the ppm on the new boilers and then you to
confirm this rating is equal to or lower than the previous boulders. New boilers are NOx PPM SUB 30

Thanks!

Jon Fetzer
Facilities Manager- C&W at CAMBIA HEALTH SOLUTIONS
Direct: [phone]
[e-mail]
[e-mail]
2890 E Cottonwood PKWY,
Salt Lake City, Utah 84121| United States
cushmanwakefield.com
LinkedIn | Facebook | Twitter | YouTube | Google+ | Instagram

From: John Persons <[e-mail]>
Sent: Monday, March 11, 2024 12:42 PM
To: Fetzer, Jon <[e-mail]>
Subject: Re: 12090 Follow up to air quality inspection

Jon,
8/8/24, 1:51 PM State of Utah Mail - FW: 12090 Follow up to air quality inspection
https://mail.google.com/mail/u/0/?ik=0900585596&view=pt&search=all&permthid=thread-f:1805570092458770634&simpl=msg-f:1805570092458770…2/12

I found the permit. (DAQE-AN0120900002-11) From the looks of it, this should qualify as a reduction in air pollutants
modification. I just need a couple of quick pieces of information from you:

Are you the best point of contact for this source? (your name will be on the updated permit).

Can you confirm that the new boilers onsite are smaller or of equal size to the ones replaced? (Our records indicate
that this is true based on the pics that you submitted.)

What is the NOx ppm rating on the new and old boilers? I just need the ppm on the new boilers and then you to
confirm this rating is equal to or lower than the previous boulders.

Also, I have attached a copy of the current permit to this email. If you could get back to me with this information quickly
that would be great. Let me know if you have any questions.

- Best Regards
John Persons

On Tue, Mar 5, 2024 at 5:44 PM Fetzer, Jon <[e-mail]> wrote:
I do not. Daniel Riddle from your department said your office had a copy of the original permit. Maybe you could get
it from him.

Get Outlook for iOS
From: John Persons <[e-mail]>
Sent: Tuesday, March 5, 2024 1:41:37 PM
To: Fetzer, Jon <[e-mail]>
Subject: Re: 12090 Follow up to air quality inspection

Jon,

Do you by chance have a copy of the old permit? Or just the permit number?

- Best Regards
John Persons

On Wed, Feb 28, 2024 at 2:15 PM Fetzer, Jon <[e-mail]> wrote:
Hi john,
8/8/24, 1:51 PM State of Utah Mail - FW: 12090 Follow up to air quality inspection
https://mail.google.com/mail/u/0/?ik=0900585596&view=pt&search=all&permthid=thread-f:1805570092458770634&simpl=msg-f:1805570092458770…3/12

A couple years back we had 4 boilers replaced on site with higher efficiency units (details attached). Can you tell
me what needs to be done to amend our current permit to reflect the new units.

Thanks!

Jon Fetzer
Facilities Manager- C&W at CAMBIA HEALTH SOLUTIONS
Direct: [phone]
[e-mail]
[e-mail]
2890 E Cottonwood PKWY,
Salt Lake City, Utah 84121| United States
cushmanwakefield.com
LinkedIn | Facebook | Twitter | YouTube | Google+ | Instagram

From: Fetzer, Jon <[e-mail]>
Sent: Wednesday, February 28, 2024 1:59 PM
To: John Persons <[e-mail]>
Subject: FW: 12090 Follow up to air quality inspection

FYI.

Thanks!

Jon Fetzer
Facilities Manager- C&W at CAMBIA HEALTH SOLUTIONS
Direct: [phone]
[e-mail]
8/8/24, 1:51 PM State of Utah Mail - FW: 12090 Follow up to air quality inspection
https://mail.google.com/mail/u/0/?ik=0900585596&view=pt&search=all&permthid=thread-f:1805570092458770634&simpl=msg-f:1805570092458770…4/12
[e-mail]
2890 E Cottonwood PKWY,
Salt Lake City, Utah 84121| United States
cushmanwakefield.com
LinkedIn | Facebook | Twitter | YouTube | Google+ | Instagram

From: Daniel Riddle <[e-mail]>
Sent: Tuesday, February 27, 2024 8:41 AM
To: Fetzer, Jon <[e-mail]>
Cc: Shepardson, Ken <[e-mail]>; Slaughter, Shiloh <Shiloh.Slaughter@
cambiahealth.com>; [e-mail]
Subject: Re: 12090 Follow up to air quality inspection

Jon - some further clarification on your boilers. After discussing with my manager, your new boilers do not require
a new permit since they are still <5 MMBTu/hr. According to the notes I took at the time of inspection, the 2
boilers in the east building are both rated at 2 MMBtu/hr and the 2 in the west building are both rated at 1.6
MMBtu/hr. I won't be issuing any compliance action at this time - engineering will probably give you a similar
response if you let them know about the ratings.

Best,
Daniel

On Fri, Feb 23, 2024 at 10:56 AM Fetzer, Jon <[e-mail]> wrote:
Daniel,

I have a call with one of you Air Quality engineers on Monday as well. Just wanted to give you the heads up.
Thank you

Get Outlook for iOS
From: Shepardson, Ken <[e-mail]>
Sent: Friday, February 23, 2024 10:55:38 AM
To: Daniel Riddle <[e-mail]>
Cc: Fetzer, Jon <[e-mail]>; Slaughter, Shiloh <[e-mail]>;
[e-mail] <[e-mail]>
Subject: RE: RE: 12090 Follow up to air quality inspection

Thank you! Sorry to hear you were ill, I’m glad you’re feeling better! Have a good weekend!

8/8/24, 1:51 PM State of Utah Mail - FW: 12090 Follow up to air quality inspection
https://mail.google.com/mail/u/0/?ik=0900585596&view=pt&search=all&permthid=thread-f:1805570092458770634&simpl=msg-f:1805570092458770…5/12
Thanks!

Ken Shepardson
Lead Operating Engineer- C&W at CAMBIA HEALTH SOLUTIONS
Direct: [phone]
[e-mail]
[e-mail]
2890 E Cottonwood PKWY,
Salt Lake City, Utah 84121| United States
cushmanwakefield.com
LinkedIn | Facebook | Twitter | YouTube | Google+ | Instagram

From: Daniel Riddle <[e-mail]>
Sent: Friday, February 23, 2024 10:48 AM
To: Shepardson, Ken <[e-mail]>
Cc: Fetzer, Jon <[e-mail]>; Slaughter, Shiloh <[e-mail]>;
[e-mail]
Subject: Re: RE: 12090 Follow up to air quality inspection

This message is from an EXTERNAL email address - Please only click links and attachments if you're
sure they are safe.
Ken - sorry for the late response - I was ill following the holiday. This should satisfy the requirements for ZZZZ
and ULSD, thank you.

On Wed, Feb 21, 2024 at 7:30 AM Shepardson, Ken <[e-mail]> wrote:
Good morning Daniel! I just wanted to follow up as we have not heard back and the deadline you gave us for
the end of this week is approaching. We would like to know if we need to get additional information or if what
we have provided you is within your parameters.

Thanks!

Ken Shepardson
8/8/24, 1:51 PM State of Utah Mail - FW: 12090 Follow up to air quality inspection
https://mail.google.com/mail/u/0/?ik=0900585596&view=pt&search=all&permthid=thread-f:1805570092458770634&simpl=msg-f:1805570092458770…6/12
Lead Operating Engineer- C&W at CAMBIA HEALTH SOLUTIONS
Direct: [phone]
[e-mail]
[e-mail]
2890 E Cottonwood PKWY,
Salt Lake City, Utah 84121| United States
cushmanwakefield.com
LinkedIn | Facebook | Twitter | YouTube | Google+ | Instagram

From: Shepardson, Ken
Sent: Friday, February 16, 2024 9:39 AM
To: [e-mail]
Cc: Fetzer, Jon <[e-mail]>; Slaughter, Shiloh <Shiloh.Slaughter@
cambiahealth.com>; [e-mail]
Subject: RE: 12090 Follow up to air quality inspection

Hello!

We reached out to our partner Wheeler, and we are grateful Caden was able to help us out. Please see
attached screenshots showing about 4.5 hours of maintenance run time on each generator. Caden also
added the following…

“We reached out to Rhinehart about the fuel. They said they used #2 dyed ultra-low sulfur diesel. I'll see if
we can get any documentation on it, but I hope that helps.”

Is this good enough for what you require, or do we need more information or need to display it differently?

Thanks!

Ken Shepardson
Lead Operating Engineer- C&W at CAMBIA HEALTH SOLUTIONS
Direct: [phone]
8/8/24, 1:51 PM State of Utah Mail - FW: 12090 Follow up to air quality inspection
https://mail.google.com/mail/u/0/?ik=0900585596&view=pt&search=all&permthid=thread-f:1805570092458770634&simpl=msg-f:1805570092458770…7/12
[e-mail]
[e-mail]
2890 E Cottonwood PKWY,
Salt Lake City, Utah 84121| United States
cushmanwakefield.com
LinkedIn | Facebook | Twitter | YouTube | Google+ | Instagram

IMPORTANT NOTICE: This communication, including any attachment, contains information that may be
confidential or privileged, and is intended solely for the entity or individual to whom it is addressed. If you are
not the intended recipient, you should delete this message and are hereby notified that any disclosure,
copying, or distribution of this message is strictly prohibited. Nothing in this email, including any attachment,
is intended to be a legally binding signature.

--

John Persons
Environmental Engineer | Minor NSR Section
M: [phone]
airquality.utah.gov

--

8/8/24, 1:51 PM State of Utah Mail - FW: 12090 Follow up to air quality inspection
https://mail.google.com/mail/u/0/?ik=0900585596&view=pt&search=all&permthid=thread-f:1805570092458770634&simpl=msg-f:1805570092458770…8/12
John Persons
Environmental Engineer | Minor NSR Section
M: [phone]
airquality.utah.gov

--

John Persons
Environmental Engineer | Minor NSR Section
M: [phone]
airquality.utah.gov

Katie Andersen <[e-mail]>Mon, Jul 29, 2024 at 9:44 AM
To: "Fetzer, Jon" <[e-mail]>
Hi Jon,
I spoke with John Persons about this. He informed me that the decision was made to not update the permit at that time
since emissions wouldn't change because the boilers are considered exempted equipment.
The DAQ would like to move forward with a 10-Year Review of the permit since it wasn't officially updated earlier this
year.
Will you verify that the addresses listed in this permit are correct?
According to the last compliance inspection report, the current rating of the boilers are 1.6 and 2.0 MMBtu/hr, correct?
8/8/24, 1:51 PM State of Utah Mail - FW: 12090 Follow up to air quality inspection
https://mail.google.com/mail/u/0/?ik=0900585596&view=pt&search=all&permthid=thread-f:1805570092458770634&simpl=msg-f:1805570092458770…9/12
Are the generators rated at 1,500 kW?
Thank you for your help!
Cheers,
Katie Andersen
[Quoted text hidden]
--

Katie Andersen
Engineering Technician I | Minor NSR Section
M: [phone]
airquality.utah.gov
DAQE-AN0120900002-11 (1).pdf
48K
Fetzer, Jon <[e-mail]>Mon, Jul 29, 2024 at 9:52 AM
To: Katie Andersen <[e-mail]>
Will you verify that the addresses listed in this permit are correct? 2890 East Cottonwood Parkway, Cottonwood Utah,
84121

According to the last compliance inspection report, the current rating of the boilers are 1.6 and 2.0 MMBtu/hr,
correct? Correct

Are the generators rated at 1,500 kW? Correct

Thanks!

Jon Fetzer
Facilities Manager- C&W at CAMBIA HEALTH SOLUTIONS
Direct: [phone]
[e-mail]
8/8/24, 1:51 PM State of Utah Mail - FW: 12090 Follow up to air quality inspection
https://mail.google.com/mail/u/0/?ik=0900585596&view=pt&search=all&permthid=thread-f:1805570092458770634&simpl=msg-f:180557009245877…10/12
[e-mail]
2890 E Cottonwood PKWY,
Salt Lake City, Utah 84121| United States
cushmanwakefield.com
LinkedIn | Facebook | Twitter | YouTube | Google+ | Instagram

[Quoted text hidden]
Katie Andersen <[e-mail]>Mon, Jul 29, 2024 at 11:51 AM
To: "Fetzer, Jon" <[e-mail]>
Thank you Jon!
I used the information provided about the emission units to quickly estimate overall emissions for the facility. It may be
possible that Regence BlueCross BlueShield of Utah qualifies for a Small Source Exemption. Small Source Exemptions
are for sources that emit less than 5 tons per year of any criteria pollutant, 500 pounds per year of a hazardous air
pollutant, or 500 pounds per year of any other air contaminant. With a Small Source Exemption, sources are not required
to pay annual NSR fees, undergo inspections, nor notify the DAQ when they make modifications (unless those
modifications would exceed the emission thresholds). To get a Small Source Exemption, the DAQ would revoke your
existing permit and issue the Small Source Exemption.
Would you be interested in applying for a Small Source Exemption? I can confirm the applicability of the exemption if you
would like to see if Regence BlueCross BlueShield qualifies. I would need natural gas and diesel fuel consumption
records for the last two years.
The DAQ doesn't require sources to obtain a Small Source Exemption. So if you would rather not worry about it, I can
continue with the 10-Year Review and issue you an updated Approval Order.
Please let me know what you would like to do. If you have any questions, feel free to give me a call.
Cheers,
Katie Andersen
[Quoted text hidden]
Katie Andersen <[e-mail]>Thu, Aug 8, 2024 at 1:33 PM
To: "Fetzer, Jon" <[e-mail]>
Hello Jon,
I wanted to follow up with you to see what course of action you would like to take. If you are interested in applying for a
Small Source Exemption, I would need additional information from you in order to confirm that Regence BlueCross
BlueShield of Utah would qualify. If you would rather keep your Approval Order, then I can move forward with updating the
permit.
Please advise on which course of action you would like to take.
Cheers,
Katie Andersen
[Quoted text hidden]
Fetzer, Jon <[e-mail]>Thu, Aug 8, 2024 at 1:43 PM
To: Katie Andersen <[e-mail]>
8/8/24, 1:51 PM State of Utah Mail - FW: 12090 Follow up to air quality inspection
https://mail.google.com/mail/u/0/?ik=0900585596&view=pt&search=all&permthid=thread-f:1805570092458770634&simpl=msg-f:180557009245877…11/12
Lets just keep it as it is.
[Quoted text hidden]
8/8/24, 1:51 PM State of Utah Mail - FW: 12090 Follow up to air quality inspection
https://mail.google.com/mail/u/0/?ik=0900585596&view=pt&search=all&permthid=thread-f:1805570092458770634&simpl=msg-f:180557009245877…12/12