DAQ-2024-004460

DAQE-AN104060016-24

{{$d1 }}

Joseph Rosen
Snowbird Resort LLC
3165 East Millrock Drive, Suite 150
Snowbird, UT 84121
[e-mail]

Dear Mr. Rosen:

Re: Approval Order: Administrative Amendment to Approval Order to DAQE-AN104060010-19 to
Remove One (1) Boiler, Resulting in a Reduction in Air Pollutants under R307-401-12
Project Number: N104060016

The attached Approval Order (AO) is issued pursuant to the Notice of Intent (NOI) received on December
11, 2023. Snowbird Resort LLC must comply with the requirements of this AO, all applicable state
requirements (R307), and Federal Standards.

The project engineer for this action is Christine Bodell, 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:CB: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

January 8, 2024

STATE OF UTAH
Department of Environmental Quality
Division of Air Quality

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APPROVAL ORDER
DAQE-AN104060016-24
Administrative Amendment to Approval Order to
DAQE-AN104060010-19 to Remove One (1) Boiler, Resulting
in a Reduction in Air Pollutants under R307-401-12

Prepared By
Christine Bodell, Engineer
[phone]
[e-mail]

Issued to
Snowbird Resort LLC - Snowbird Ski and Summer Resort

Issued On
{{$d2 }}

Issued By

{{$s }}

Bryce C. Bird
Director
Division of Air Quality
January 8, 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.................................................................................................................. 4
SUMMARY OF EMISSIONS .................................................................................................... 4
SECTION I: GENERAL PROVISIONS .................................................................................... 5
SECTION II: PERMITTED EQUIPMENT .............................................................................. 6
SECTION II: SPECIAL PROVISIONS ..................................................................................... 7
PERMIT HISTORY ..................................................................................................................... 9
ACRONYMS ............................................................................................................................... 10

DAQE-AN104060016-24
Page 3

GENERAL INFORMATION

CONTACT/LOCATION INFORMATION

Owner Name Source Name
Snowbird Resort LLC Snowbird Resort LLC - Snowbird Ski and
Summer Resort

Mailing Address Physical Address
3165 East Millrock Drive, Suite 150 Cliff Lodge
Snowbird, UT 84121 Snowbird, UT 84092

Source Contact UTM Coordinates
Name: Joseph Rosen 444,374 m Easting
Phone: [phone],492,484 m Northing
Email: [e-mail] Datum NAD83
UTM Zone 12

SIC code 7011 (Hotels & Motels)

SOURCE INFORMATION
General Description
Snowbird Resort LLC (Snowbird) is located in an unincorporated community in Little Cottonwood
Canyon in the Wasatch Range of the Rocky Mountains. Little Cottonwood Canyon is primarily in Salt
Lake County. Snowbird is a year-round ski and summer resort that has 10 chairlifts, a surface lift, an
aerial tram, and a 600-foot tunnel enclosing a one-way conveyor lift connection from Peruvian Gulch to
Mineral Basin. Snowbird requires power generating units to provide electricity and heating for a
562-room hotel and conference center, employee housing, fire station, parking structure, drain tunnel,
restaurants, two (2) heated swimming pools, four (4) hot tubs, and piping that keeps sidewalks clear of
snow.

NSR Classification
Administrative Amendment

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: SM

Applicable Federal Standards
NSPS (Part 60), A: General Provisions
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
DAQE-AN104060016-24
Page 4

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 Description
Snowbird is requesting to remove one (1) 9.23 MMBtu/hr, natural gas-fired boiler (previously listed as
B-02 under Equipment ID# II.A.3 in Approval Order DAQE-AN104060010-19). The removal of the
boiler results in a net decrease in criteria and hazardous air pollutant emissions. This project is an
administrative amendment for a reduction in air pollutants (UAC Rule R307-401-12).

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 -4724 47175.00
Carbon Monoxide -3.33 24.82
Nitrogen Oxides -1.99 48.51
Particulate Matter - PM10 -0.30 1.30
Particulate Matter - PM2.5 -0.30 1.30
Sulfur Oxides -0.03 0.58
Volatile Organic Compounds -0.22 13.45

Hazardous Air Pollutant Change (lbs/yr) Total (lbs/yr)
1,1,2,2-Tetrachloroethane (CAS #79345) 0 19
1,1,2-Trichloroethane (CAS #79005) 0 15
1,3-Butadiene (CAS #106990) 0 125
1,3-Dichloropropene (CAS #542756) 0 12
2,2,4-Trimethylpentane (CAS #540841) 0 117
Acetaldehyde (CAS #75070) 0 3913
Acrolein (CAS #107028) 0 2405
Benzene (Including Benzene From Gasoline) (CAS #71432) 0 210
Biphenyl (CAS #92524) 0 99
Carbon Tetrachloride (CAS #56235) 0 17
Chlorobenzene (CAS #108907) 0 14
Chloroform (CAS #67663) 0 13
Ethyl Benzene (CAS #100414) 0 19
Ethylene Dibromide (Dibromoethane) (CAS #106934) 0 21
Formaldehyde (CAS #50000) -6 7224
Generic HAPs (CAS #GHAPS) 0 14
Hexane (CAS #110543) -142 989
Methanol (CAS #67561) 0 1170
Naphthalene (CAS #91203) 0 35
DAQE-AN104060016-24
Page 5

PAH, Total (CAS #234) 0 13
Phenol (CAS #108952) 0 11
Polycyclic Organic Matter (CAS #246) 0 29
Styrene (CAS #100425) 0 11
Toluene (CAS #108883) 0 193
Xylenes (Isomers And Mixture) (CAS #1330207) 0 87
Change (TPY) Total (TPY)
Total HAPs -0.07 8.39

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 three-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-AN104060016-24
Page 6

SECTION II: PERMITTED EQUIPMENT

II.A THE APPROVED EQUIPMENT

II.A.1 Snowbird Resort
Year-round Ski and Summer Resort

II.A.2 Three (3) Natural Gas-fired Generator Sets

Generator Set (ICE-01)
Capacity: 2912 bhp
Pollution Control: Oxidation Catalyst

Generator Set (ICE-02)
Capacity: 2912 bhp
Pollution Control: Oxidation Catalyst

Generator Set (ICE-03)
Capacity: 1804 bhp
Pollution Control: Oxidation Catalyst

II.A.3 Four (4) Natural Gas-fired Boilers

Boiler (B-03) Plaza
Capacity: 8.37 MMBTU/hr

Boiler (B-04) Snowbird Lodge
Capacity: 8.37 MMBTU/hr

Boiler (B-05) Inn Lodge
Capacity: 8.37 MMBTU/hr

Boiler (B-06) Iron Blossom Lodge
Capacity: 5.23 MMBTU/hr

II.A.4 Sixteen (16) Diesel-Fired Emergency Generators
Site-wide rating required for emergency generators engines

Cumulative site-wide rating: 5,879 hp
Maximum rating: 1,046 hp
Minimum rating: 100 hp

II.A.5 Emergency Generator Gasoline Operated
One (1) 165 hp engine, Chickadee Lift (IC-09)

II.A.6 Emergency Generator Natural Gas Operated
One (1) 140 hp engine, Mid-Gad Restaurant

II.A.7 Used Oil Burner
One (1) used oil burner, Maintenance Building

II.A.8 Exempt Activities
Various natural gas fired fireplaces, furnaces, boilers and water heaters less than 5 MMBTU/hr

II.A.9 Degreaser
One (1) metal parts cleaner, Maintenance Building, (PC-01)

DAQE-AN104060016-24
Page 7

SECTION II: SPECIAL PROVISIONS

II.B REQUIREMENTS AND LIMITATIONS

II.B.1 Site Wide Requirements
II.B.1.a Visible emissions from the following emission points shall not exceed the following values:

All boiler exhaust stacks - 10% opacity

All-natural gas or propane fired engines - 10% opacity

All standby generator or auxiliary power units - 20% opacity after warm-up (15-20 minutes)

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. [40 CFR 60]

II.B.2 IC Testing Requirements
II.B.2.a The owner/operator shall not emit more than the following rates and concentrations from ICE-1,
2, and 3:

Per Stack:

NOx: 0.5 g/bhp-hr
CO: 0.178 g/bhp-hr

[R307-401-8]

II.B.2.a.1 Initial Test
The owner/operator shall conduct an initial stack test on the emission unit within 180 days after
startup of the emission unit. [R307-165-2]

II.B.2.a.2 Test Frequency
The owner/operator shall conduct a stack test on the emission unit within three (3) years after the
date of the most recent stack test of the emission unit. The Director may require the
owner/operator to perform a stack test at any time. [R307-165-2, R307-401-8]

II.B.2.a.3 Notification
At least 30 days prior to conducting a stack test, the owner/operator shall submit a source test
protocol to the Director. The source test protocol shall include the items contained in
R307-165-3. If directed by the Director, the owner/operator shall attend a pretest conference.
[R307-165-3, R307-401-8]

II.B.2.a.4 Testing & Test Conditions
The owner/operator shall conduct testing according to the approved source test protocol and
according to the test conditions contained in R307-165-4. [R307-165-4, R307-401-8]

II.B.2.a.5 Reporting
No later than 60 days after completing a stack test, the owner/operator shall submit a written
report of the results from the stack testing to the Director. The report shall include validated
results and supporting information. [R307-165-5, R307-401-8]

DAQE-AN104060016-24
Page 8

II.B.2.a.6 Possible Rejection of Test Results
The Director may reject stack testing results if the test did not follow the approved source test
protocol or for a reason specified in R307-165-6. [R307-165-6, R307-401-8]

II.B.2.a.7 Standard Conditions

A. Temperature - 68 degrees Fahrenheit (293 K)

B. Pressure - 29.92 in Hg (101.3 kPa)

C. Averaging Time - As specified in the applicable test method.

[40 CFR 60 Subpart A, 40 CFR 63 Subpart A, R307-401-8]

II.B.2.a.8 NOx
40 CFR 60, Appendix A, Method 7; Method 7E; or other EPA-approved testing method as
acceptable to the Director. [R307-401-8]

II.B.2.a.9 CO
40 CFR 60, Appendix A, Method 10 or other EPA-approved testing method as acceptable to the
Director. [R307-401-8]

II.B.2.b The three (3) natural gas-fired generators (ICE-1, 2, and 3) stack heights shall be 52.5 feet or
higher, measured from the ground elevation of the co-gen building. [R307-401-8]

II.B.3 Requirements for Emergency Generators
II.B.3.a The owner/operator shall use the emergency generator engines only during the periods when
electric power from the public utilities is interrupted, or for regular maintenance and testing of
the engines. [R307-401-8]

II.B.3.b Each emergency generator engine shall not exceed 100 hours of operation per rolling 12-month
period for maintenance checks and readiness testing. There is no time limit on the use of the
engines during emergencies. [R307-401-8]

II.B.3.b.1 To determine compliance with a rolling 12-month total, the owner/operator shall calculate a new
12-month total by the twentieth 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 generator engine was used;

B. The duration of operation each day in hours; and

C. The reason for the emergency generator engine usage.

[R307-401-8]

II.B.4 Fuel Requirements
II.B.4.a The owner/operator shall only use natural gas as a primary fuel in the three (3) auxiliary
generators (ICE-1, ICE-2, ICE-3) and four (4) boilers (B-03, B-04, B-05, B-06). The emergency
generator (IC-09) shall only use gasoline as fuel. [R307-401-8]

II.B.4.b The owner/operator shall only use diesel fuel (fuel oil #1, #2 or diesel fuel oil additives) in the
emergency generators (II.A.4). All diesel burned shall meet the definition of ultra-low sulfur
diesel (ULSD), and contain no more than 15 ppm sulfur.
[40 CFR 60 Subpart IIII, 40 CFR 63 Subpart ZZZZ]

DAQE-AN104060016-24
Page 9

II.B.4.b.1 To demonstrate compliance with the fuel oil requirements, the owner/operator shall keep and
maintain fuel purchase invoices. The fuel purchase invoices shall indicate that the diesel fuel
meets the ULSD requirements, or the owner/operator shall obtain certification of sulfur content
from the fuel supplier. [40 CFR 60 Subpart IIII, 40 CFR 63 Subpart ZZZZ]

II.B.5 Degreaser Requirements
II.B.5.a The VOCs and HAPs containing materials shall be stored in covered containers (except when in
use). VOCs- and/or HAPs-laden rags shall also be stored in covered containers. [R307-335]

II.B.6 Used Oil Burner Requirements
II.B.6.a The used oil burner used for energy recovery shall comply with the following:

A. The concentration/parameters of contaminants in any used oil fuel shall not
exceed the following levels:

Arsenic 5 ppm by weight
Cadmium 2 ppm by weight
Chromium 10 ppm by weight
Lead 100 ppm by weight
Total halogens 1,000 ppm by weight
Sulfur 0.5 percent by weight

B. The flash point of all used oil to be burned shall not be less than 100 degrees F

C. The owner/operator shall provide test certification for used oil fuel. Certification
shall be either by their own testing or test reports from the used oil fuel marketer.
Records of used oil fuel consumption and the test reports shall be kept for all
periods when the plant is in operation

D. Used oil that does not exceed any of the listed contaminants content may be
burned. The owner/operator shall record the quantities of oil burned on a daily
basis.

E. Any used oil fuel that contains more than 1000 ppm by weight of total halogens
shall be considered a hazardous waste and shall not be burned in the boiler. The
oil shall be tested for halogen content by ASTM Method D-808-81, EPA
Method 8240 or Method 8260 before used oil fuel is transferred to the boiler
tank and burned.

[R307-401-8]

PERMIT HISTORY

This Approval Order shall supersede (if a modification) or will be based on the following documents:

Supersedes AO DAQE-AN104060010-19 dated October 3, 2019
Is Derived From NOI dated December 11, 2023

DAQE-AN104060016-24
Page 10

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-

RN104060016
December 21, 2023

Joseph Rosen
Snowbird Resort LLC
3165 East Millrock Drive, Suite 150
Snowbird, UT 84121
[e-mail]

Dear Joseph Rosen,

Re: Engineer Review - Administrative Amendment:
Administrative Amendment to Approval Order to DAQE-AN104060010-19 to Remove One (1)
Boiler, Resulting in a Reduction in Air Pollutants under R307-401-12
Project Number: N104060016

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. Snowbird
Resort LLC should complete this review within 10 business days of receipt.

Snowbird Resort LLC should contact Christine Bodell at [phone] if there are questions or
concerns with the review of the draft permit conditions. Upon resolution of your concerns, please email
Christine Bodell 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 Snowbird Resort LLC does not respond to this letter within 10 business days, the project will move
forward without source concurrence. If Snowbird Resort LLC 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

Joseph Rosen Digitally signed by Joseph Rosen
Reason: I am approving this document
Date: 2023.12.26 09:30:27-07'00'

Engineer Review N104060016: Snowbird Resort LLC- Snowbird Ski and Summer Resort
December 21, 2023
Page 1
UTAH DIVISION OF AIR QUALITY
ENGINEER REVIEW

SOURCE INFORMATION

Project Number N104060016
Owner Name Snowbird Resort LLC
Mailing Address 3165 East Millrock Drive, Suite 150
Snowbird, UT, 84121

Source Name Snowbird Resort LLC- Snowbird Ski and Summer Resort
Source Location Cliff Lodge
Snowbird, UT 84092

UTM Projection 444,374 m Easting, 4,492,484 m Northing
UTM Datum NAD83
UTM Zone UTM Zone 12
SIC Code 7011 (Hotels & Motels)

Source Contact Joseph Rosen
Phone Number [phone]
Email [e-mail]

Billing Contact Joseph Rosen
Phone Number [phone]
Email [e-mail]

Project Engineer Christine Bodell, Engineer
Phone Number [phone]
Email [e-mail]

Notice of Intent (NOI) Submitted December 11, 2023
Date of Accepted Application December 12, 2023

Engineer Review N104060016: Snowbird Resort LLC- Snowbird Ski and Summer Resort
December 21, 2023
Page 2
SOURCE DESCRIPTION

General Description
Snowbird Resort LLC (Snowbird) is located in an unincorporated community in Little
Cottonwood Canyon in the Wasatch Range of the Rocky Mountains. Little Cottonwood Canyon
is primarily in Salt Lake County. Snowbird is a year-round ski and summer resort that has 10
chairlifts, a surface lift, an aerial tram, and a 600-foot tunnel enclosing a one-way conveyor lift
connection from Peruvian Gulch to Mineral Basin. Snowbird requires power generating units to
provide electricity and heating for a 562-room hotel and conference center, employee housing,
fire station, parking structure, drain tunnel, restaurants, two heated swimming pools, four hot
tubs, and piping that keeps sidewalks clear of snow.

NSR Classification:
Administrative Amendment

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: SM

Applicable Federal Standards
NSPS (Part 60), A: General Provisions
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
Administrative Amendment to Approval Order to DAQE-AN104060010-19 to Remove One (1)
Boiler, Resulting in a Reduction in Air Pollutants under R307-401-12

Project Description
Snowbird is requesting to remove one (1) 9.23 MMBtu/hr, natural gas-fired boiler (previously
listed as B-02 under Equipment ID# II.A.3 in Approval Order DAQE-AN104060010-19). The
removal of the boiler results in a net decrease in criteria and hazardous air pollutant emissions.
This project is an administrative amendment for a reduction in air pollutants (UAC Rule R307-
401-12).

EMISSION IMPACT ANALYSIS
No criteria air pollutants and/or HAPs emissions are increasing. Therefore, no modeling is required at this time.
[Last updated December 18, 2023]

Engineer Review N104060016: Snowbird Resort LLC- Snowbird Ski and Summer Resort
December 21, 2023
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 -4724 47175.00
Carbon Monoxide -3.33 24.82
Nitrogen Oxides -1.99 48.51
Particulate Matter - PM10 -0.30 1.30
Particulate Matter - PM2.5 -0.30 1.30
Sulfur Oxides -0.03 0.58
Volatile Organic Compounds -0.22 13.45

Hazardous Air Pollutant Change (lbs/yr) Total (lbs/yr)
1,1,2,2-Tetrachloroethane (CAS #79345) 0 19
1,1,2-Trichloroethane (CAS #79005) 0 15
1,3-Butadiene (CAS #106990) 0 125
1,3-Dichloropropene (CAS #542756) 0 12
2,2,4-Trimethylpentane (CAS #540841) 0 117
Acetaldehyde (CAS #75070) 0 3913
Acrolein (CAS #107028) 0 2405
Benzene (Including Benzene From Gasoline) (CAS #71432) 0 210
Biphenyl (CAS #92524) 0 99
Carbon Tetrachloride (CAS #56235) 0 17
Chlorobenzene (CAS #108907) 0 14
Chloroform (CAS #67663) 0 13
Ethyl Benzene (CAS #100414) 0 19
Ethylene Dibromide (Dibromoethane) (CAS #106934) 0 21
Formaldehyde (CAS #50000) -6 7224
Generic HAPs (CAS #GHAPS) 0 14
Hexane (CAS #110543) -142 989
Methanol (CAS #67561) 0 1170
Naphthalene (CAS #91203) 0 35
PAH, Total (CAS #234) 0 13
Phenol (CAS #108952) 0 11
Polycyclic Organic Matter (CAS #246) 0 29
Styrene (CAS #100425) 0 11
Toluene (CAS #108883) 0 193
Xylenes (Isomers And Mixture) (CAS #1330207) 0 87
Change (TPY) Total (TPY)
Total HAPs -0.07 8.39

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

Engineer Review N104060016: Snowbird Resort LLC- Snowbird Ski and Summer Resort
December 21, 2023
Page 4
Review of BACT for New/Modified Emission Units

1. BACT review regarding Boiler Removal
This project is an administrative amendment for a reduction in air pollutants (UAC Rule R307-
401-12). Under UAC R307-401-12(1), Snowbird is not required to submit a notice of intent.
Therefore, no BACT is required at this time. [Last updated December 18, 2023]

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 N104060016: Snowbird Resort LLC- Snowbird Ski and Summer Resort
December 21, 2023
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 Snowbird Resort
Year-round Ski and Summer Resort

II.A.2 Three (3) Natural Gas-fired Generator Sets

Generator Set (ICE-01)
Capacity: 2912 bhp
Pollution Control: Oxidation Catalyst

Generator Set (ICE-02)
Capacity: 2912 bhp
Pollution Control: Oxidation Catalyst

Generator Set (ICE-03)
Capacity: 1804 bhp
Pollution Control: Oxidation Catalyst

II.A.3 Four (4) Natural Gas-fired Boilers

Boiler (B-03) Plaza
Capacity: 8.37 MMBTU/hr

Boiler (B-04) Snowbird Lodge
Capacity: 8.37 MMBTU/hr

Boiler (B-05) Inn Lodge
Capacity: 8.37 MMBTU/hr

Boiler (B-06) Iron Blossom Lodge
Capacity: 5.23 MMBTU/hr

II.A.4 Sixteen (16) Diesel-Fired Emergency Generators
Site-wide rating required for emergency generators engines

Cumulative site-wide rating: 5,879 hp
Maximum rating: 1,046 hp
Minimum rating: 100 hp

II.A.5 Emergency Generator Gasoline Operated
One (1) 165 hp engine, Chickadee Lift (IC-09)

II.A.6 Emergency Generator Natural Gas Operated
One (1) 140 hp engine, Mid-Gad Restaurant

Engineer Review N104060016: Snowbird Resort LLC- Snowbird Ski and Summer Resort
December 21, 2023
Page 6
II.A.7 Used Oil Burner
One (1) used oil burner, Maintenance Building

II.A.8 Exempt Activities
Various natural gas fired fireplaces, furnaces, boilers and water heaters less than 5
MMBTU/hr

II.A.9 Degreaser
One (1) metal parts cleaner, Maintenance Building, (PC-01)

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 Visible emissions from the following emission points shall not exceed the following values:

All boiler exhaust stacks - 10% opacity
All natural gas or propane fired engines - 10% opacity
All standby generator or auxiliary power units -20% opacity after warm-up (15-20 minutes)
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. [40 CFR 60]

II.B.2 IC Testing Requirements
II.B.2.a The owner/operator shall not emit more than the following rates and concentrations from ICE-
1, 2, and 3:

Per Stack:

NOx: 0.5 g/bhp-hr
CO: 0.178 g/bhp-hr

[R307-401-8]

II.B.2.a.1 Initial Test
The owner/operator shall conduct an initial stack test on the emission unit within 180 days
after startup of the emission unit. [R307-165-2]

II.B.2.a.2 Test Frequency
The owner/operator shall conduct a stack test on the emission unit within three (3) years after
the date of the most recent stack test of the emission unit. The Director may require the
owner/operator to perform a stack test at any time. [R307-165-2, R307-401-8]

Engineer Review N104060016: Snowbird Resort LLC- Snowbird Ski and Summer Resort
December 21, 2023
Page 7
II.B.2.a.3 Notification
At least 30 days prior to conducting a stack test, the owner/operator shall submit a source test
protocol to the Director. The source test protocol shall include the items contained in
R307-165-3. If directed by the Director, the owner/operator shall attend a pretest conference.
[R307-165-3, R307-401-8]

II.B.2.a.4
NEW
Testing & Test Conditions
The owner/operator shall conduct testing according to the approved source test protocol and
according to the test conditions contained in R307-165-4. [R307-165-4, R307-401-8]

II.B.2.a.5 Reporting
No later than 60 days after completing a stack test, the owner/operator shall submit a written
report of the results from the stack testing to the Director. The report shall include validated
results and supporting information. [R307-165-5, R307-401-8]

II.B.2.a.6
NEW
Possible Rejection of Test Results
The Director may reject stack testing results if the test did not follow the approved source test
protocol or for a reason specified in R307-165-6. [R307-165-6, R307-401-8]

II.B.2.a.7 Standard Conditions

A. Temperature - 68 degrees Fahrenheit (293 K)

B. Pressure - 29.92 in Hg (101.3 kPa)

C. Averaging Time - As specified in the applicable test method

[40 CFR 60 Subpart A, 40 CFR 63 Subpart A, R307-401-8]

II.B.2.a.8 NOx
40 CFR 60, Appendix A, Method 7; Method 7E; or other EPA-approved testing method as
acceptable to the Director. [R307-401-8]

II.B.2.a.9 CO
40 CFR 60, Appendix A, Method 10 or other EPA-approved testing method as acceptable to
the Director. [R307-401-8]

II.B.2.b The three (3) natural gas-fired generators (ICE-1, 2, and 3) stack heights shall be 52.5 feet or
higher, measured from the ground elevation of the co-gen building. [R307-401-8]

II.B.3 Requirements for Emergency Generators
II.B.3.a The owner/operator shall use the emergency generator engines only during the periods when
electric power from the public utilities is interrupted, or for regular maintenance and testing of
the engines. [R307-401-8]

II.B.3.b Each emergency generator engine shall not exceed 100 hours of operation per rolling 12-
month period for maintenance checks and readiness testing. There is no time limit on the use
of the engines during emergencies. [R307-401-8]

Engineer Review N104060016: Snowbird Resort LLC- Snowbird Ski and Summer Resort
December 21, 2023
Page 8
II.B.3.b.1 To determine compliance with a rolling 12-month total, the owner/operator shall calculate a
new 12-month total by the twentieth 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 generator engine was used;

B. The duration of operation each day in hours; and

C. The reason for the emergency generator engine usage.

[R307-401-8]

II.B.4 Fuel Requirements
II.B.4.a The owner/operator shall only use natural gas as a primary fuel in the three auxiliary
generators (ICE-1, ICE-2, ICE-3) and five boilers (BG-02, BG-03, BG-04, BG-05, BG-06).
The emergency generator (IC-09) shall only use gasoline as fuel. [R307-401-8]

II.B.4.b The owner/operator shall only use diesel fuel (fuel oil #1, #2 or diesel fuel oil additives) in the
emergency generators (II.A.4). All diesel burned shall meet the definition of ultra-low sulfur
diesel (ULSD), and contain no more than 15 ppm sulfur. [40 CFR 60 Subpart IIII, 40 CFR 63
Subpart ZZZZ]

II.B.4.b.1 To demonstrate compliance with the fuel oil requirements, the owner/operator shall keep and
maintain fuel purchase invoices. The fuel purchase invoices shall indicate that the diesel fuel
meets the ULSD requirements, or the owner/operator shall obtain certification of sulfur
content from the fuel supplier. [40 CFR 60 Subpart IIII, 40 CFR 63 Subpart ZZZZ]

II.B.5 Degreaser Requirements
II.B.5.a The VOCs and HAPs containing materials shall be stored in covered containers (except when
in use). VOCs and/or HAPs-laden rags shall also be stored in covered containers. [R307-335]

II.B.6 Used Oil Burner Requirements

Engineer Review N104060016: Snowbird Resort LLC- Snowbird Ski and Summer Resort
December 21, 2023
Page 9
II.B.6.a The used oil burner used for energy recovery shall comply with the following:

A. The concentration/parameters of contaminants in any used oil fuel shall not
exceed the following levels:

Arsenic 5 ppm by weight
Cadmium 2 ppm by weight
Chromium 10 ppm by weight
Lead 100 ppm by weight
Total halogens 1,000 ppm by weight
Sulfur 0.5 percent by weight

B. The flash point of all used oil to be burned shall not be less than 100 degrees F.

C. The owner/operator shall provide test certification for used oil fuel. Certification shall
be either by their own testing or test reports from the used oil fuel marketer. Records
of used oil fuel consumption and the test reports shall be kept for all periods when the
plant is in operation.

D. Used oil that does not exceed any of the listed contaminants content may be burned.
The owner/operator shall record the quantities of oil burned on a daily basis.

E. Any used oil fuel that contains more than 1000 ppm by weight of total halogens shall
be considered a hazardous waste and shall not be burned in the boiler. The oil shall be
tested for halogen content by ASTM Method D-808-81, EPA Method 8240 or Method
8260 before used oil fuel is transferred to the boiler tank and burned.

[R307-401-8]

Engineer Review N104060016: Snowbird Resort LLC- Snowbird Ski and Summer Resort
December 21, 2023
Page 10
PERMIT HISTORY

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

Supersedes AO DAQE-AN104060010-19 dated October 3, 2019
Is Derived From NOI dated December 11, 2023

REVIEWER COMMENTS

1. Comment regarding Reduction in Air Pollutants under UAC R307-401-12 and Emission
Calculations:
Snowbird has requested to remove one (1) 9.23 MMBtu/hr, natural gas-fired boiler. The boiler
operated 8,760 hours annually. Removing the boiler resulted in a reduction of 1.99 tpy of NOx, 3.33
tpy of CO, 0.3 tpy of PM10, 0.3 tpy of PM2.5, 0.03 tpy of SO2, 0.22 tpy of VOCs, and 0.07 tpy of
HAPs. Emission factors are based on AP-42 (1998), Section 1.4, Natural Gas Combustion, Table
1.4-3 and 1.4-4.

Snowbird is currently permitted as a minor source under Approval Order (AO), DAQE-
AN104060010-19, issued October 3, 2019. The major source threshold for the Northern Wasatch
Front Ozone Nonattainment area is being reduced to 50 tons per year (tpy) each of nitrogen oxides
(NOx) and volatile organic compounds (VOCs) due to redesignation from moderate to serious. The
current AO allows for 50.50 tpy of NOx. Therefore, it is Snowbird's intention to reduce the NOx
emissions below the required threshold via Rule R307-401-12, Reduction in the Air Pollutants by
removing the above-mentioned boiler. [Last updated December 18, 2023]

2. Comment regarding Federal Subpart Applicability:
40 CFR 60 NSPS Subpart IIII (Standards of Performance for Stationary Compression Ignition
Internal Combustion Engines) applies to owners and operators of stationary CI ICE that commence
construction after July 11, 2005, where the stationary CI ICE is manufactured after April 1, 2006.
Therefore, NSPS Subpart IIII applies to the new generator engine and the existing sixteen (16)
diesel-fired emergency generators.

40 CFR 60 NSPS Subpart JJJJ (Standards of Performance for Stationary Spark Ignition Internal
Combustion Engines) applies to manufacturers, owners, and operators of non-emergency stationary
spark ignition (SI) internal combustion engines (ICE) that commence construction after June 12,
2006. The provisions of NSPS Subpart JJJJ are applicable to four (4) natural gas-fired engines and
one (1) gasoline-fired engine.

40 CFR 63 MACT Subpart ZZZZ (National Emissions Standards for Hazardous Air Pollutants for
Stationary Reciprocating Internal Combustion Engines) is applicable to owners/operators of
stationary RICE at a major or area sources of HAP emissions. The provisions of MACT Subpart
ZZZZ are applicable to all engines on site. Therefore, MACT Subpart ZZZZ applies to this facility.
[Last updated December 20, 2023]

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,

Engineer Review N104060016: Snowbird Resort LLC- Snowbird Ski and Summer Resort
December 21, 2023
Page 11
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 facility is not a major source and is not a Title IV source. The facility is not subject to 40 CFR
61 (NESHAP) regulations. It is subject to 40 CFR 60 (NSPS) Subparts A, IIII, and JJJJ and 63
(MACT) Subparts A and ZZZZ. NSPS Subpart IIII, NSPS Subpart JJJJ, and MACT Subpart ZZZZ
each exempt sources 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. Therefore, Title V does not apply to
this facility as per R307-415-4(2)(c).
[Last updated December 12, 2023]

Engineer Review N104060016: Snowbird Resort LLC- Snowbird Ski and Summer Resort
December 21, 2023
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

Emission Summary 12/27/2023
NG Engines Boilers Emerg Engs Total
NOx 36.94 8.50 5.06 50.50
CO 12.85 14.27 1.03 28.15
PM2.5 0.02 1.29 0.29 1.60
PM10 0.02 1.29 0.29 1.60
SO2 0.14 0.10 0.37 0.61
VOC 12.22 0.93 0.51 13.67
HAPs 8.14 0.32 0.01 8.46
CO2e 31,375 20,252 271 51,899
NG Engines Boilers1 Emerg Engs Total
NOx 36.94 6.51 5.06 48.51
CO 12.85 10.94 1.03 24.82
PM2.5 0.02 0.99 0.29 1.30
PM10 0.02 0.99 0.29 1.30
SO2 0.14 0.08 0.37 0.58
VOC 12.22 0.72 0.51 13.45
HAPs 8.14 0.25 0.01 8.39
CO2e 31,375 15,528 271 47,175
1. Boiler #2 is removed from the facility
NG Engines Boilers Emerg Engs Total Model Thresholds1,2 Modeling Required?
NOx 0.00 -1.98 0.00 -1.98 40 No
CO 0.00 -3.33 0.00 -3.33 100 No
PM2.5 0.00 -0.30 0.00 -0.30 15 No
PM10 0.00 -0.30 0.00 -0.30 15 No
SO2 0.00 -0.02 0.00 -0.02 40 No
VOC 0.00 -0.22 0.00 -0.22 N/A N/A
HAPs 0.00 -0.07 0.00 -0.07 N/A N/A
CO2e 0 -4,724 0.00 -4,724
1. Modifcation Modeling Thresholds per Table 1 of UDAQ Modeling Guidance
2. PM2.5/10 modeling is not required within SLC County
-2.31 Change of PM10, NOx and SO2 is less than 25 tpy. No offsets are required
Pollutant Facility-wide Pre-Project tpy
Pollutant Facility-wide Post-Project tpy
Pollutant Facility-wide Emission Delta
05+000Stantec Consulting
NG Engines 12/27/2023
Natural Gas Engines
Operating
Hours
140 Ford SG-03 100
2912 Caterpillar G3520H 8760
2912 Caterpillar G3520H 8760
1804 Caterpillar G3512H 8760
Ford G3520H G3512H Ford G3520H G3512H
lb/hr lb/hr3 lb/hr3 tpy tpy tpy
NOx 2.21 0.5 0.5 2.17 6.42 1.99 1.08E-01 28.12 8.71
CO 0.351 1.73 1.78 0.34 2.22 0.71 1.72E-02 9.73 3.10
PM2.54 9.50E-03 2.45E-04 2.45E-04 0.009 3.14E-03 9.74E-04 4.66E-04 0.01 0.00
PM104 9.50E-03 2.45E-04 2.45E-04 0.009 3.14E-03 9.74E-04 4.66E-04 0.01 0.00
SO24 5.88E-04 1.87E-03 1.87E-03 0.001 0.02 0.01 2.88E-05 0.10 0.03
VOC 2.96E-02 0.32 0.37 0.029 2.05 0.74 1.45E-03 9.00 3.22
1. AP-42 Table 3.2-3 4-stroke Rich Burn for the Ford Engine
2. Manufactuer specificiations
3. Oxyidation catalyst controls CO (90%) and VOC (50%) as well as Formaldehyde (85%/65%)
4. AP-42 Table 3.2-3 $-stroke Lean Burn for the Cat Engines
Natural Gas kg/MMBtu1 g/hp-hr2 g/hp-hr2
CO2 53.06 430 411
CH4 0.001
N2O 0.0001
1. http://www.epa.gov/sites/production/files/2015-07/documents/emission-factors_2014.pdf
GHG Emission Factors
Site Rating
HP Manufacturer Model
Pollutant lb/MMBtu1 G3520H
g/hp-hr2
G3512H
g/hp-hr2
05+000Stantec Consulting
NG Engines 12/27/2023
2. G3520H and G3512H Spec Sheets
Engine CO2 CH4 N2O CO2e
Ford 5.72 0.00 0.00 6
G3520H 12,091 0.20 0.02 12,102
G3520H 12,091 0.20 0.02 12,102
G3512H 7,159 0.12 0.01 7,166
Total 31,347 12.87 15.34 31,375
tons per year
05+000Stantec Consulting
NG Engines 12/27/2023
Total
tpy
36.94
12.85
0.02
0.02
0.14
12.22
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NG Engines 12/27/2023

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NG Engines 12/27/2023
HAPS lb/MMBtu1 lb/MMBtu2 Ford (lb/hr)3520 CAT (lb/hr)2 3512 CAT (lb/hr)2
1,1,2,2 - Tetrachloroethane 2.53E-05 4.00E-05 2.48E-05 1.63E-03 5.05E-04
1,1,2 - Trichloroethane 1.53E-05 3.18E-05 1.50E-05 1.30E-03 4.02E-04
1,3-Butadiene 6.63E-04 2.67E-04 6.50E-04 1.09E-02 3.37E-03
1,3-Dichloropropene 1.27E-05 2.64E-05 1.24E-05 1.08E-03 3.33E-04
2-Methylnaphthalene4 3.32E-05 1.35E-03 4.19E-04
2,2,4-Trimethylpentane 2.50E-04 1.02E-02 3.16E-03
Acenaphthene4 1.25E-06 5.10E-05 1.58E-05
Aceaphthylene4 5.53E-06 2.25E-04 6.98E-05
Acetaldehyde 2.79E-03 8.36E-03 2.73E-03 3.41E-01 1.06E-01
Acrolein 2.63E-03 5.14E-03 2.58E-03 2.10E-01 6.49E-02
Benzene 1.58E-03 4.40E-04 1.55E-03 1.79E-02 5.56E-03
Benzo(b)fluoranthene4 1.66E-07 6.77E-06 2.10E-06
Benzo(e)pyrene4 4.15E-07 1.69E-05 5.24E-06
Benzo(g,h,i)perylene4 4.14E-07 1.69E-05 5.23E-06
Biphenyl 2.12E-04 8.64E-03 2.68E-03
Carbon Tetrachloride 1.77E-05 3.67E-05 1.73E-05 1.50E-03 4.63E-04
Chlorobenzene 1.29E-05 3.04E-05 1.26E-05 1.24E-03 3.84E-04
Chloroform 1.37E-05 2.85E-05 1.34E-05 1.16E-03 3.60E-04
Chrysene4 6.93E-07 2.83E-05 8.75E-06
Ethylbenzene 2.48E-05 3.97E-05 2.43E-05 1.62E-03 5.01E-04
Ethylene Dibromide 2.13E-05 4.43E-05 2.09E-05 1.81E-03 5.59E-04
Fluoranthene4 1.11E-06 4.53E-05 1.40E-05
Fluorene4 5.67E-06 2.31E-04 7.16E-05
Formaldehyde3 2.05E-02 0.34/0.12 2.01E-02 6.55E-01 1.67E-01
Methanol 3.06E-03 2.50E-03 3.00E-03 1.02E-01 3.16E-02
Methylene Chloride 4.12E-05 2.00E-05 4.04E-05 8.15E-04 2.53E-04
n-Hexane 1.11E-03 4.53E-02 1.40E-02
Naphthalene 9.71E-05 7.44E-05 9.52E-05 3.03E-03 9.40E-04
PAH 1.41E-04 2.69E-05 1.38E-04 1.10E-03 3.40E-04
Phenanthrene4 1.04E-05 4.24E-04 1.31E-04
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NG Engines 12/27/2023
Phenol 2.40E-05 9.78E-04 3.03E-04
Pyrene4 1.36E-06 5.54E-05 1.72E-05
Styrene 1.19E-05 2.36E-05 1.17E-05 9.62E-04 2.98E-04
Tetrachloroethane 2.48E-06 1.01E-04 3.13E-05
Toluene 5.58E-04 4.08E-04 5.47E-04 1.66E-02 5.15E-03
Vinyl Chloride 7.18E-06 1.49E-05 7.04E-06 6.07E-04 1.88E-04
Xylene 1.95E-04 1.84E-04 1.91E-04 7.50E-03 2.32E-03
1. AP-42 Table 3.2-3 4-stroke Rich Burn for the Ford Engine
2. AP-42 Table 3.2-3 4-stroke Lean Burn for the CAT Engines
3. Formaldehyde is 85%/65% controlled and the units of the emission factors are g-hp-hr (0.12 for G3512H and 0.34 G3520H)
4. Hazard pollutant because of POM
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NG Engines 12/27/2023
Total (lb/hr)Ford (tpy)3520 CAT (tpy)3512 CAT (tpy)Total (tpy)
2.16E-03 1.24E-06 7.14E-03 2.21E-03 9.36E-03
1.71E-03 7.50E-07 5.68E-03 1.76E-03 7.44E-03
1.49E-02 3.25E-05 4.77E-02 1.48E-02 6.25E-02
1.42E-03 6.22E-07 4.71E-03 1.46E-03 6.17E-03
1.77E-03 5.93E-03 1.84E-03 7.76E-03
1.33E-02 4.46E-02 1.38E-02 5.85E-02
6.67E-05 2.23E-04 6.91E-05 2.92E-04
2.95E-04 9.87E-04 3.06E-04 1.29E-03
4.49E-01 1.37E-04 1.49E+00 4.62E-01 1.96E+00
2.77E-01 1.29E-04 9.18E-01 2.84E-01 1.20E+00
2.50E-02 7.74E-05 7.86E-02 2.43E-02 1.03E-01
8.86E-06 2.96E-05 9.18E-06 3.88E-05
2.22E-05 7.41E-05 2.30E-05 9.71E-05
2.21E-05 7.39E-05 2.29E-05 9.68E-05
1.13E-02 3.79E-02 1.17E-02 4.96E-02
1.98E-03 8.67E-07 6.55E-03 2.03E-03 8.58E-03
1.64E-03 6.32E-07 5.43E-03 1.68E-03 7.11E-03
1.54E-03 6.71E-07 5.09E-03 1.58E-03 6.67E-03
3.70E-05 1.24E-04 3.83E-05 1.62E-04
2.14E-03 1.22E-06 7.09E-03 2.20E-03 9.29E-03
2.39E-03 1.04E-06 7.91E-03 2.45E-03 1.04E-02
5.93E-05 1.98E-04 6.14E-05 2.60E-04
3.03E-04 1.01E-03 3.14E-04 1.33E-03
8.42E-01 1.00E-03 2.87E+00 7.32E-01 3.60
1.36E-01 1.50E-04 4.46E-01 1.38E-01 5.85E-01
1.11E-03 2.02E-06 3.57E-03 1.11E-03 4.68E-03
5.93E-02 1.98E-01 6.14E-02 2.60E-01
4.07E-03 4.76E-06 1.33E-02 4.12E-03 1.74E-02
1.57E-03 6.91E-06 4.80E-03 1.49E-03 6.30E-03
5.55E-04 1.86E-03 5.75E-04 2.43E-03
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NG Engines 12/27/2023
1.28E-03 4.29E-03 1.33E-03 5.61E-03
7.26E-05 2.43E-04 7.52E-05 3.18E-04
1.27E-03 5.83E-07 4.21E-03 1.31E-03 5.52E-03
1.32E-04 4.43E-04 1.37E-04 5.80E-04
2.23E-02 2.73E-05 7.29E-02 2.26E-02 9.54E-02
8.03E-04 3.52E-07 2.66E-03 8.24E-04 3.49E-03
1.00E-02 9.56E-06 3.29E-02 1.02E-02 4.30E-02
8.14
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Boilers 12/27/2023
lb/MMscf
CO 84
NOx2 50
PM2.5 7.6
PM10 7.6
SO2 0.6
VOC 5.5
1. AP-42 Section 1.4, Tables 1 and 2
2. Low NOx burners
Boilers MMBtu/hr CO NOx PM2.5 PM10 SO2 VOC
BG-021 9.23 0.76 0.45 0.07 0.07 0.01 0.05
BG-03 8.37 0.69 0.41 0.06 0.06 0.005 0.05
BG-04 8.37 0.69 0.41 0.06 0.06 0.005 0.05
BG-05 8.37 0.69 0.41 0.06 0.06 0.005 0.05
BG-06 5.23 0.43 0.26 0.04 0.04 0.003 0.03
39.57 30.34
1. Boiler #2 is removed from facility
Boilers MMBtu/hr CO NOx PM2.5 PM10 SO2 VOC
BG-022 9.23 3.33 1.98 0.30 0.30 0.02 0.22
BG-03 8.37 3.02 1.80 0.27 0.27 0.02 0.20
BG-04 8.37 3.02 1.80 0.27 0.27 0.02 0.20
BG-05 8.37 3.02 1.80 0.27 0.27 0.02 0.20
BG-06 5.23 1.89 1.12 0.17 0.17 0.01 0.12
Total 14.27 8.50 1.29 1.29 0.10 0.93
1. Assumes 8,760 hr/yr or continual operation
2. Boiler #2 is removed
Natural Gas kg/MMBtu
CO2 53.06 119066.64
CH4 0.001 2.244
N2O 0.0001 0.2244
* 40 CFR part 98 Subpart C
http://www.epa.gov/sites/production/files/2015-07/documents/emission-factors_2014.pdf
Emission Factors
Pounds per Hour
Tons per Year1
GHG Emission Factors
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Boilers 12/27/2023
Boiler CO2 CH4 N2O CO2e
BG-02 4,719 0.09 0.01 4,724
BG-03 4,279 0.08 0.01 4,284
BG-04 4,279 0.08 0.01 4,284
BG-05 4,279 0.08 0.01 4,284
BG-06 2,674 0.05 0.01 2,677
Total 20,232 9.53 11.36 20,252
tons per year
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Boilers 12/27/2023

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Boilers 12/27/2023
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Boilers 12/27/2023
HAPS CAS EF (lb/MMscf)lb/hr
Arsenic 7440-38-2 2.00E-04 5.95E-06
Benzene 71-43-2 2.10E-03 6.25E-05
Beryllium 7440-41-7 1.20E-05 3.57E-07
Cadmium 7440-43-9 1.10E-03 3.27E-05
Chromium 7440-47-3 1.40E-03 4.16E-05
Cobalt 7440-48-4 8.40E-05 2.50E-06
Copper 7440-50-8 8.50E-04 2.53E-05
Dichlorobenzene 25321-22-6 1.20E-03 3.57E-05
Formaldehyde 50-00-0 7.50E-02 2.23E-03
Hexane 110-54-3 1.80E+00 5.35E-02
Lead 7439-92-1 5.00E-04 1.49E-05
Manganese 7439-96-5 3.80E-04 1.13E-05
Mercury 7439-97-6 2.60E-04 7.73E-06
Molybdenum 7439-98-7 1.10E-03 3.27E-05
Naphthalene 91-20-3 6.10E-04 1.81E-05
Nickel 7440-02-0 2.10E-03 6.25E-05
Selenium 7782-49-2 2.40E-05 7.14E-07
Toluene 108-88-3 3.40E-03 1.01E-04
2-Methylnapthalene1 91-57-6 2.40E-05 7.14E-07
3-Methylchloranthrene1 56-49-5 1.80E-06 5.35E-08
7,12-Dimethylbenz(a)anthracene1 1.60E-05 4.76E-07
Acenaphthene1 83-32-9 1.80E-06 5.35E-08
Acenaphthylene1 203-96-8 1.80E-06 5.35E-08
Anthracene1 120-12-7 2.40E-06 7.14E-08
Benz(a)anthracene1 56-55-3 1.80E-06 5.35E-08
Benzo(a)pyrene1 50-32-8 1.20E-06 3.57E-08
Benzo(b)fluoranthene1 205-99-2 1.80E-06 5.35E-08
Benzo(g,h,i)perylene1 191-24-2 1.20E-06 3.57E-08
Benzo(k)fluoranthene1 205-82-3 1.80E-06 5.35E-08
Chrysene1 218-01-9 1.80E-06 5.35E-08
Dibenzo(a,h)anthracene1 53-70-3 1.20E-06 3.57E-08
Dichlorobenzene1 25321-22-6 1.20E-03 3.57E-05
Fluoranthene1 206-44-0 3.00E-06 8.92E-08
Fluorene1 86-73-7 2.80E-06 8.33E-08
Indeno(1,2,3-cd)pyrene1 193-39-5 1.80E-06 5.35E-08
Phenanathrene1 85-01-8 1.70E-05 5.06E-07
Pyrene1 129-00-0 5.00E-06 1.49E-07
1. The pollutant is a HAP because it is considered a polycyclic organic matter (POM).
2. Emission factors are based on AP-42 (1998), Section 1.4, Natural Gas Combustion, Table 1.4-3 and 1.4-4.
3. The Total HAPs amount is lower as seven pollutants were included as HAPs in the previoous application when they are not
This includes: Barium, pentane, propane, vanadium, zinc, ethane, butane. Also Boiler 2 is removed
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Boilers 12/27/2023
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Boilers 12/27/2023
tons/year
2.61E-05
2.74E-04
1.56E-06
1.43E-04
1.82E-04
1.09E-05
1.11E-04
1.56E-04
9.77E-03
2.35E-01
6.51E-05
4.95E-05
3.39E-05
1.43E-04
7.95E-05
2.74E-04
3.13E-06
4.43E-04
3.13E-06
2.35E-07
2.08E-06
2.35E-07
2.35E-07
3.13E-07
2.35E-07
1.56E-07
2.35E-07
1.56E-07
2.35E-07
2.35E-07
1.56E-07
1.56E-04
3.91E-07
3.65E-07
2.35E-07
2.21E-06
6.51E-07
2.46E-01
t.
05+000Stantec Consulting
Current_Emergency_Engines 12/27/2023
Gen Set Eng HP Hr/yr NOx CO SO2 PM2.5 PM10 VOC
IC-01 435 100 3.100E-02 6.680E-03 2.050E-03 2.200E-03 2.200E-03 2.470E-03
IC-02 280 100 3.100E-02 6.680E-03 2.050E-03 2.200E-03 2.200E-03 2.470E-03
IC-03A1 1050 100 1.134E-02 8.220E-04 1.214E-05 1.808E-04 1.808E-04 3.288E-04
IC-03B1 138 100 1.003E-02 1.973E-03 2.050E-03 1.315E-04 1.315E-04 2.470E-03
IC-04A1 143 100 9.535E-03 6.576E-04 2.050E-03 1.151E-04 1.151E-04 2.470E-03
IC-04B 143 100 3.100E-02 6.680E-03 2.050E-03 2.200E-03 2.200E-03 2.470E-03
IC-05A1 139 100 3.100E-02 6.680E-03 2.050E-03 4.409E-04 4.409E-04 2.470E-03
IC-05B1 139 100 6.083E-03 2.959E-03 2.050E-03 3.452E-04 3.452E-04 2.470E-03
IC-06 137 100 3.100E-02 6.680E-03 2.050E-03 2.200E-03 2.200E-03 2.470E-03
IC-07 200 100 3.100E-02 6.680E-03 2.050E-03 2.200E-03 2.200E-03 2.470E-03
IC-08 100 100 3.100E-02 6.680E-03 2.050E-03 2.200E-03 2.200E-03 2.470E-03
IC-09 (gas)165 100 1.100E-02 6.960E-03 5.910E-04 7.210E-04 7.210E-04 1.500E-02
IC-10 435 100 3.100E-02 6.680E-03 2.050E-03 2.200E-03 2.200E-03 2.470E-03
IC-011 475 100 3.100E-02 6.680E-03 2.050E-03 2.200E-03 2.200E-03 2.470E-03
SG-01A1 548 100 7.363E-03 1.168E-03 2.050E-03 1.014E-04 1.014E-04 8.818E-05
SG-02 100 100 3.100E-02 6.680E-03 2.050E-03 2.200E-03 2.200E-03 2.470E-03
SG-04 134 100 3.100E-02 6.680E-03 2.050E-03 2.200E-03 2.200E-03 2.470E-03
1. Manufacturer Guarantee/EPA Certification
2. AP-42 Table 3.3-1
3. The IC-03A is greater than 600 hp. Thus AP-42 Section 3.4 was used. Also, it was assumed that ULSD (15 ppm or 0.0015%) is used
0.001644 g/kw-hr conversion to lb/hp-hr; used where appropriate
lb/hp-hr Emission Factors 1,2,3
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Current_Emergency_Engines 12/27/2023
HAP EMISSIONS
Gen Set Eng HP Hr/yr Benzene Toluene Xylene Naphthalene Formaldehyde Acetaldehyde
IC-01 435 100 9.330E-04 4.090E-04 2.850E-04 8.480E-05 1.180E-03 7.670E-04
IC-02 280 100 9.330E-04 4.090E-04 2.850E-04 8.480E-05 1.180E-03 7.670E-04
IC-03A2 1050 100 7.760E-04 2.810E-04 1.930E-04 1.300E-04 7.890E-05 2.520E-05
IC-03B 138 100 9.330E-04 4.090E-04 2.850E-04 8.480E-05 1.180E-03 7.670E-04
IC-04A 143 100 9.330E-04 4.090E-04 2.850E-04 8.480E-05 1.180E-03 7.670E-04
IC-04B 143 100 9.330E-04 4.090E-04 2.850E-04 8.480E-05 1.180E-03 7.670E-04
IC-05A 139 100 9.330E-04 4.090E-04 2.850E-04 8.480E-05 1.180E-03 7.670E-04
IC-05B 139 100 9.330E-04 4.090E-04 2.850E-04 8.480E-05 1.180E-03 7.670E-04
IC-06 137 100 9.330E-04 4.090E-04 2.850E-04 8.480E-05 1.180E-03 7.670E-04
IC-07 200 100 9.330E-04 4.090E-04 2.850E-04 8.480E-05 1.180E-03 7.670E-04
IC-08 100 100 9.330E-04 4.090E-04 2.850E-04 8.480E-05 1.180E-03 7.670E-04
IC-09 (gas)165 100 9.330E-04 4.090E-04 2.850E-04 8.480E-05 1.180E-03 7.670E-04
IC-10 435 100 9.330E-04 4.090E-04 2.850E-04 8.480E-05 1.180E-03 7.670E-04
IC-011 475 100 9.330E-04 4.090E-04 2.850E-04 8.480E-05 1.180E-03 7.670E-04
SG-01A 548 100 9.330E-04 4.090E-04 2.850E-04 8.480E-05 1.180E-03 7.670E-04
SG-02 100 100 9.330E-04 4.090E-04 2.850E-04 8.480E-05 1.180E-03 7.670E-04
SG-04 134 100 9.330E-04 4.090E-04 2.850E-04 8.480E-05 1.180E-03 7.670E-04
1. AP-42 Table 3.3-2, assumes 7,000 Btu/hp-hr brake-specific fuel consumption
2. AP-42 Table 3.4, assumes 7,000 Btu/hp-hr brake-specific fuel consumption
3. Note that the previous analysis assumed propylene as a HAP when it is not, but excluded naphthalene. These errors have been updated
Diesel Fuel kg/MMBtu*Gasoline kg/MMBtu*
CO2 73.96 CO2 66.88
lb/MMBtu Emission Factors 1,3
GHG Emission Factors
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Current_Emergency_Engines 12/27/2023
CH4 3.00E-03 CH4 3.00E-03
N2O 6.00E-04 N2O 6.00E-04
* 40 CFR part 98 Subpart C
http://www.epa.gov/sites/production/files/2015-07/documents/emission-factors_2014.pdf
CO2 CH4 N2O CO2e
IC-01 24.77 1.00E-03 2.01E-04 24.86
IC-02 15.95 6.47E-04 1.29E-04 16.00
IC-03A 59.80 2.43E-03 4.85E-04 60.00
IC-03B 7.86 3.19E-04 6.38E-05 7.89
IC-04A 8.14 3.30E-04 6.61E-05 8.17
IC-04B 8.14 3.30E-04 6.61E-05 8.17
IC-05A 7.92 3.21E-04 6.42E-05 7.94
IC-05B 7.92 3.21E-04 6.42E-05 7.94
IC-06 7.80 3.16E-04 6.33E-05 7.83
IC-07 11.39 4.62E-04 9.24E-05 11.43
IC-08 5.69 2.31E-04 4.62E-05 5.71
IC-09 (gas)8.50 3.81E-04 7.62E-05 8.53
IC-10 24.77 1.00E-03 2.01E-04 24.86
IC-011 27.05 1.10E-03 2.19E-04 27.14
SG-01A 31.21 1.27E-03 2.53E-04 31.32
SG-02 5.69 2.31E-04 4.62E-05 5.71
SG-04 7.63 3.10E-04 6.19E-05 7.66
Total 270.24 0.27 0.66 271.17
Assumes 7,000 Btu/hp-hr brake-specific fuel consumption
tons per year
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Current_Emergency_Engines 12/27/2023
lb/hr TPY lb/hr TPY lb/hr TPY lb/hr TPY
13.49 0.67 2.91 0.15 0.89 0.04 0.96 0.05
8.68 0.43 1.87 0.09 0.57 0.03 0.62 0.03
11.91 0.60 0.86 0.04 0.01 0.00 0.19 0.01
1.38 0.07 0.27 0.01 0.28 0.01 0.02 0.00
1.36 0.07 0.09 0.00 0.29 0.01 0.02 0.00
4.43 0.22 0.96 0.05 0.29 0.01 0.31 0.02
4.31 0.22 0.93 0.05 0.28 0.01 0.06 0.00
0.85 0.04 0.41 0.02 0.28 0.01 0.05 0.00
4.25 0.21 0.92 0.05 0.28 0.01 0.30 0.02
6.20 0.31 1.34 0.07 0.41 0.02 0.44 0.02
3.10 0.16 0.67 0.03 0.21 0.01 0.22 0.01
1.82 0.09 1.15 0.06 0.10 0.00 0.12 0.01
13.49 0.67 2.91 0.15 0.89 0.04 0.96 0.05
14.73 0.74 3.17 0.16 0.97 0.05 1.05 0.05
4.04 0.20 0.64 0.03 1.12 0.06 0.06 0.00
3.10 0.16 0.67 0.03 0.21 0.01 0.22 0.01
4.15 0.21 0.90 0.04 0.27 0.01 0.29 0.01
101.27 5.06 20.65 1.03 7.38 0.37 5.87 0.29
Emissions
NOx CO SO2 PM2.5
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Current_Emergency_Engines 12/27/2023
Acrolein 1,3-Butadiene Benzene Toluene Xylene Naphthalene Formaldehyde Acetaldehyde
9.250E-05 3.91E-05 1.420E-04 6.227E-05 4.339E-05 1.291E-05 1.797E-04 1.168E-04
9.250E-05 3.91E-05 9.143E-05 4.008E-05 2.793E-05 8.310E-06 1.156E-04 7.517E-05
7.880E-06 2.852E-04 1.033E-04 7.093E-05 4.778E-05 2.900E-05 9.261E-06
9.250E-05 3.91E-05 4.506E-05 1.975E-05 1.377E-05 4.096E-06 5.699E-05 3.705E-05
9.250E-05 3.91E-05 4.670E-05 2.047E-05 1.426E-05 4.244E-06 5.906E-05 3.839E-05
9.250E-05 3.91E-05 4.670E-05 2.047E-05 1.426E-05 4.244E-06 5.906E-05 3.839E-05
9.250E-05 3.91E-05 4.539E-05 1.990E-05 1.387E-05 4.126E-06 5.741E-05 3.731E-05
9.250E-05 3.91E-05 4.539E-05 1.990E-05 1.387E-05 4.126E-06 5.741E-05 3.731E-05
9.250E-05 3.91E-05 4.474E-05 1.961E-05 1.367E-05 4.066E-06 5.658E-05 3.678E-05
9.250E-05 3.91E-05 6.531E-05 2.863E-05 1.995E-05 5.936E-06 8.260E-05 5.369E-05
9.250E-05 3.91E-05 3.266E-05 1.432E-05 9.975E-06 2.968E-06 4.130E-05 2.685E-05
9.250E-05 3.91E-05 5.388E-05 2.362E-05 1.646E-05 4.897E-06 6.815E-05 4.429E-05
9.250E-05 3.91E-05 1.420E-04 6.227E-05 4.339E-05 1.291E-05 1.797E-04 1.168E-04
9.250E-05 3.91E-05 1.551E-04 6.800E-05 4.738E-05 1.410E-05 1.962E-04 1.275E-04
9.250E-05 3.91E-05 1.789E-04 7.845E-05 5.466E-05 1.626E-05 2.263E-04 1.471E-04
9.250E-05 3.91E-05 3.266E-05 1.432E-05 9.975E-06 2.968E-06 4.130E-05 2.685E-05
9.250E-05 3.91E-05 4.376E-05 1.918E-05 1.337E-05 3.977E-06 5.534E-05 3.597E-05
1.497E-03 6.345E-04 4.411E-04 1.579E-04 1.562E-03 1.005E-03
T
Emissions Tons per Year
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Current_Emergency_Engines 12/27/2023
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Current_Emergency_Engines 12/27/2023
lb/hr TPY lb/hr TPY
0.96 0.05 1.07 0.05
0.62 0.03 0.69 0.03
0.19 0.01 0.35 0.02
0.02 0.00 0.34 0.02
0.02 0.00 0.35 0.02
0.31 0.02 0.35 0.02
0.06 0.00 0.34 0.02
0.05 0.00 0.34 0.02
0.30 0.02 0.34 0.02
0.44 0.02 0.49 0.02
0.22 0.01 0.25 0.01
0.12 0.01 2.48 0.12
0.96 0.05 1.07 0.05
1.05 0.05 1.17 0.06
0.06 0.00 0.05 0.00
0.22 0.01 0.25 0.01
0.29 0.01 0.33 0.02
5.87 0.29 10.27 0.51
PM10 VOC
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Current_Emergency_Engines 12/27/2023
Acrolein 1,3-Butadiene Benzene Toluene Xylene Naphthalene Formaldehyde
1.408E-05 5.953E-06 2.841E-03 1.245E-03 8.678E-04 2.582E-04 3.593E-03
9.065E-06 3.832E-06 1.829E-03 8.016E-04 5.586E-04 1.662E-04 2.313E-03
2.896E-06 0.000E+00 5.704E-03 2.065E-03 1.419E-03 9.555E-04 5.799E-04
4.468E-06 1.889E-06 9.013E-04 3.951E-04 2.753E-04 8.192E-05 1.140E-03
4.630E-06 1.957E-06 9.339E-04 4.094E-04 2.853E-04 8.488E-05 1.181E-03
4.630E-06 1.957E-06 9.339E-04 4.094E-04 2.853E-04 8.488E-05 1.181E-03
4.500E-06 1.902E-06 9.078E-04 3.980E-04 2.773E-04 8.251E-05 1.148E-03
4.500E-06 1.902E-06 9.078E-04 3.980E-04 2.773E-04 8.251E-05 1.148E-03
4.435E-06 1.875E-06 8.947E-04 3.922E-04 2.733E-04 8.132E-05 1.132E-03
6.475E-06 2.737E-06 1.306E-03 5.726E-04 3.990E-04 1.187E-04 1.652E-03
3.238E-06 1.369E-06 6.531E-04 2.863E-04 1.995E-04 5.936E-05 8.260E-04
5.342E-06 2.258E-06 1.078E-03 4.724E-04 3.292E-04 9.794E-05 1.363E-03
1.408E-05 5.953E-06 2.841E-03 1.245E-03 8.678E-04 2.582E-04 3.593E-03
1.538E-05 6.500E-06 3.102E-03 1.360E-03 9.476E-04 2.820E-04 3.924E-03
1.774E-05 7.499E-06 3.579E-03 1.569E-03 1.093E-03 3.253E-04 4.526E-03
3.238E-06 1.369E-06 6.531E-04 2.863E-04 1.995E-04 5.936E-05 8.260E-04
4.338E-06 1.834E-06 8.752E-04 3.836E-04 2.673E-04 7.954E-05 1.107E-03
1.230E-04 5.079E-05 2.994E-02 1.269E-02 8.822E-03 3.158E-03 3.123E-02
Total HAPS (TPY)5.471E-03
Emissions lb/hr
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Current_Emergency_Engines 12/27/2023
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Current_Emergency_Engines 12/27/2023
Acetaldehyde Acrolein 1,3-Butadiene
2.336E-03 2.817E-04 1.191E-04
1.503E-03 1.813E-04 7.664E-05
1.852E-04 5.792E-05 0.000E+00
7.409E-04 8.936E-05 3.777E-05
7.678E-04 9.259E-05 3.914E-05
7.678E-04 9.259E-05 3.914E-05
7.463E-04 9.000E-05 3.804E-05
7.463E-04 9.000E-05 3.804E-05
7.356E-04 8.871E-05 3.750E-05
1.074E-03 1.295E-04 5.474E-05
5.369E-04 6.475E-05 2.737E-05
8.859E-04 1.068E-04 4.516E-05
2.336E-03 2.817E-04 1.191E-04
2.550E-03 3.076E-04 1.300E-04
2.942E-03 3.548E-04 1.500E-04
5.369E-04 6.475E-05 2.737E-05
7.194E-04 8.677E-05 3.668E-05
2.011E-02 2.461E-03 1.016E-03

05+000Stantec Consulting
NOTICE OF INTENT

Notice of Intent
Snowbird Resort Notice of Intent
December 8, 2023

Prepared for:

Snowbird Resort, LLC
P.O. Box 929000
Snowbird, Utah 84092-9000
Contact: Joseph Rosen
[phone]

Prepared by:

Eric Clark, P.E.
727 East Riverpark Lane, Suite 150
Boise, Idaho 83706

[phone]

NOTICE OF INTENT

This document entitled Notice of Intent was prepared by Stantec Consulting Services Inc. (“Stantec”) for the
account of Snowbird (the “Client”). Any reliance on this document by any third party is strictly prohibited. The
material in it reflects Stantec’s professional judgment in light of the scope, schedule and other limitations
stated in the document and in the contract between Stantec and the Client. The opinions in the document are
based on conditions and information existing at the time the document was published and do not take into
account any subsequent changes. In preparing the document, Stantec did not verify information supplied to it
by others. Any use which a third party makes of this document is the responsibility of such third party. Such
third party agrees that Stantec shall not be responsible for costs or damages of any kind, if any, suffered by it
or any other third party as a result of decisions made or actions taken based on this document.

Prepared by
(signature)
Eric Clark, P.E.

Approved by
(signature)
Dan Heiser, P.E.

NOTICE OF INTENT

Table of Contents
1.0 INTRODUCTION AND OVERVIEW ............................................................................. 1.1
2.0 GENERAL FACILITY INFORMATION ......................................................................... 2.1
3.0 PROCESS EQUIPMENT .............................................................................................. 3.1
4.0 EMISSIONS ................................................................................................................. 4.1
4.1 EMISSION OFFSET CREDITS .................................................................................... 4.1
5.0 REGULATORY APPLICABLITY .................................................................................. 5.1
5.1 NATIONAL AMBIENT AIR QUALITY STANDARDS (NAAQS) ..................................... 5.1
5.2 TITLE V (PART 70) OPERATING PERMIT .................................................................. 5.2
5.3 NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS
(NESHAPS) .................................................................................................................. 5.2
5.4 NEW SOURCE REVIEW (NSR) REQUIREMENTS ...................................................... 5.2
5.5 NEW SOURCE PERFORMANCE STANDARDS (NSPS)............................................. 5.3
5.6 ACID RAIN REQUIREMENTS ...................................................................................... 5.3
5.7 RISK MANAGEMENT PROGRAMS FOR CHEMICAL ACCIDENTAL RELEASE
PREVENTION .............................................................................................................. 5.3
5.8 STATE RULES ............................................................................................................. 5.3
5.8.1 General Requirements ................................................................................ 5.3
5.8.2 General Requirements - Breakdowns .......................................................... 5.4
5.8.3 Emission Inventories ................................................................................... 5.4
5.8.4 Permit: New and Modified Sources ............................................................. 5.4
6.0 AIR POLLUTION CONTROL INFORMATION ............................................................. 6.1
7.0 AMBIENT AIR QUALITY IMPACT ANALYSIS ............................................................ 7.1
LIST OF TABLES
Table 1 – Equipment List ......................................................................................................... 3.1
Table 2 – Potential to Emit ....................................................................................................... 4.1
Table 3 – Emission Changes ................................................................................................... 4.1
Table 4 – Regulatory Applicability Summary ............................................................................ 5.1
LIST OF APPENDICES
APPENDIX A SITE PLAN ................................................................................................ A.1
APPENDIX B EMISSIONS CALCULATIONS .................................................................. B.1
APPENDIX C UDAQ FORMS........................................................................................... C.1
APPENDIX D SOURCE SIZE DETERMINATION ............................................................ D.1
NOTICE OF INTENT

APPENDIX E OFFSET REQUIREMENTS ....................................................................... E.1

NOTICE OF INTENT

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1.0 INTRODUCTION AND OVERVIEW
Snowbird Resort LLC. (Snowbird) is in an unincorporated community in Little Cottonwood Canyon
in the Wasatch Range of the Rocky Mountains. Snowbird is located primarily in Salt Lake County
and Mineral Basin is in Utah County. Snowbird is a year - round ski and summer resort.
Snowbird is currently permitted as a minor source under Approval Order (AO), DAQE-AN104060010-19,
issued October 3, 2019. However, the facility was recently notified by the Utah Division of Air Quality
(UDAQ) that the major source threshold for the Northern Wasatch Front Ozone Nonattainment area was
being reduced to 50 tons per year (tpy) of nitrogen oxides (NOx) and volatile organic compounds (VOCs)
due to redesignation from moderate to serious. The current AO allows for 50.50 tpy of NOx. Therefore,
this application is intended to reduce the NOx emissions below the required threshold via Rule R307-401-
12, Reduction in the Air Pollutants. In order to do this, Boiler B-2 (9.23 million British Thermal Units per
hours [MMBTU/hr]) has been removed. No other changes are being requested to the AO by this Notice of
Intent.
This project is applicable to R307-401-12 because of Sections 1(a) and 1(b). The project will not have an
increase the Potential to Emit of any pollutant or emit any new pollutant. This document is intended to
meet the notification requirement.

NOTICE OF INTENT

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2.0 GENERAL FACILITY INFORMATION
Snowbird is a year-round ski and summer resort located in Little Cottonwood Canyon which it shares
with Alta Ski Resort. The resort currently has a surface lift, an aerial tram, a 600-foot tunnel enclosing a
one-way conveyor lift connecting Peruvian Gulch to Mineral Bas in, and 10 chairlifts; these are provided
below:
• Peruvian Express High-Speed Quad
• Gadzoom High Speed Quad
• Mineral-Basin Express High-Speed Quad
• Baldy Express High-Speed Quad
• Little Cloud High Speed Quad
• Gad 2 High Speed Quad
• Wilbere Double
• Mid-Gad Double
• Baby Thunder Double
• Chickadee Double
The Universal Transverse Mercator Datum NAD 27, Zone 12 coordinates are: 443.9 km Easting
4,491.8 km Northing. A location map and process flow diagram of the site are given in Appendix A.
This ungraded system provides electricity and heating for a 562-room hotel and conference center,
employee housing, fire station, parking structure, drain tunnel, restaurants, two heated swimming pools,
four hot tubs, and piping that keeps sidewalks clear of snow. The generator sets are used in conjunction
with a combined heat and power solution that maximizes the use of available energy produced by the
engines. Heat is recovered from exhaust gas, engine jacket cooling water, lube oil cooling water, and
turbocharger cooling water to produce steam or hot water for a variety of uses. The combined heat and
power allow Snowbird to achieve total energy system efficiencies of 70-80%, resulting in lower fuel
consumption and reduced emissions compared with processes that generate heat and power
separately. The co-generation plant supplies about half of the entire resort’s electrical needs during the
winter and spring months and 95% of the power required during the summer and early fall.
Other permitted sources of emissions from the resort include natural gas fired boilers, standby diesel
generators, and auxiliary power units.
NOTICE OF INTENT

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3.0 PROCESS EQUIPMENT
With this Notice of Intent (NOI), Snowbird is proposing to make the changes to the current Approval
Order as seen in Table 1. For further detail regarding equipment and emission calculations refer to
Appendix B.
Table 1 – Equipment List
Equipment Type Number Fuel Type Capacity
ICE-01 Generator
(G3520H) new 1 – New Building Natural Gas 2912 hp
ICE-02 Generator
(G3520H) new 1 – New Building Natural Gas 2912 hp
ICE-03 Generator
(G3512H) new 1 – New Building Natural Gas 1804 hp
B-02 Boiler - removed 1 – Conference
Center Natural Gas 9.23 MMBtu/hr
B-03 Boiler 1 - Plaza Natural Gas 8.37 MMBtu/hr
B-04 Boiler 1 – Snowbird
Lodge Natural Gas 8.37 MMBtu/hr
B-05 Boiler 1 – Inn Lodge Natural Gas 8.37 MMBtu/hr
B-06 Boiler 1 – Iron Blossom
Lodge Natural Gas 5.23 MMBtu/hr
Diesel Emergency
Generators 16 Diesel Various
Gasoline Emergency
Generator 1 – Chickadee Lift Gasoline 165 hp
NG Emergency
Generator 1 – Mid Gad Natural Gas 140 hp
Miscellaneous equipment includes one metal parts cleaner and one used oil burner, both in the
Maintenance Building. Exempt equipment includes various natural gas fireplaces, furnaces, boilers, and
water heaters less than 5 MMBTU/hr. Exempt equipment also includes various natural gas and propane
fired kitchen equipment located in Mid-Gad restaurant and base facilities. B-02 was removed and
replaced with boilers that are less than 5 MMBTU/hr.
Gadzoom Base, Wilbere Base, and Snowbird Center parking lots and general ventilation units are
for informational purposes only.
NOTICE OF INTENT

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4.0 EMISSIONS
Emissions from Boiler #2 have been removed and created a reduction of NOx Potential to Emit by 1.98
tpy as shown in Table 2. The newly proposed NOx annual emissions are reduced to 48.51 to remain a
minor source.
Table 2 – Potential to Emit
Pollutant Annual Emission
Rate (tpy)
PM2.5 1.30
PM10 1.30
NOx 48.51
SO2 0.58
CO 24.82
VOC 13.45
HAPs 8.39
As a result of this modification, facility emissions will reduce to remain below the 50 tpy Major source
threshold. Table 3 below summarizes the change in facility emissions.
Table 3 – Emission Changes
PM2.5/10 NOx SO2 CO VOC HAPs CO2e
Pre-Project Emissions (tpy) 1.60 50.50 0.61 28.15 13.67 8.46 51,898
Post-Project Emissions (tpy) 1.30 48.51 0.58 24.82 13.45 8.39 47,175
Difference (tpy) -0.30 -1.98 -0.02 -3.33 -0.22 -0.07 -4,724
* Some rounding may occur
4.1 EMISSION OFFSET CREDITS
Emission offset credits are not required in accordance with R307-421-3 as the combined total increase of
PM10, SO2 and NOx is less than 25 tpy at -2.31 tpy. Note that R307-420 does not apply to Snowbird
Resort because the facility is not a major source.
NOTICE OF INTENT

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5.0 REGULATORY APPLICABLITY
A review of state and local air quality regulations is provided in Table 4. Each regulation is described in
the following sections.
Table 4 – Regulatory Applicability Summary
Program Description Regulatory Citation Applicable
2.1 National Ambient Air Quality Standards
(NAAQS)- (dispersion modeling) 40 CFR Part 50 No
2.2 Title V Operating Permit 40 CFR Part 70 No
2.3 Air Pollutants (NESHAPs) 40 CFR Parts 61, 63 No
2.4 New Source Review (NSR) 40 CFR Part 52 Yes
2.5 New Source Performance Standards (NSPS) 40 CFR Part 60 Yes
2.6 Acid Rain Requirements 40 CFR Parts 72–78 No
2.7 Risk Management Programs for Chemical
Accidental Release Prevention 40 CFR Part 68 No
2.8. State Rules
2.8.1 General Requirements UAC [R307-101] Yes
2.8.2 General Requirements - Breakdowns UAC [R307-107] Yes
2.8.3 Emission Inventories UAC [307-150] Yes
2.8.4 Permit Requirements for New and Modified
Sources UAC [307-401] Yes

5.1 NATIONAL AMBIENT AIR QUALITY STANDARDS (NAAQS)
Primary National Ambient Air Quality Standards (NAAQS) are identified in 40 CFR Part 50 and define
levels of air quality which the United States Environmental Protection Agency (USEPA) deems necessary
to protect the public health. Secondary NAAQS define levels of air quality which the USEPA judges
necessary to protect public welfare from any known or anticipated adverse effects of a pollutant.
Examples of public welfare include protecting wildlife, buildings, national monuments, vegetation,
visibility, and property values from degradation due to excessive emissions of criteria pollutants.
Specific standards for the following pollutants have been promulgated by USEPA: PM10, PM2.5, SO2,
NOx, CO, ozone, and lead. Snowbird emits PM10, PM2.5, SO2, NOx, CO, and VOCs (a precursor to ozone).
NOTICE OF INTENT

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The proposed decreased emissions do not exceed any modeling thresholds as defined by UDAQ
modeling guidance; therefore, it is assumed that no NAAQS standards are exceeded.
5.2 TITLE V (PART 70) OPERATING PERMIT
Title V of the Clean Air Act (CAA) created the federal operating permit program. These permitting
requirements are codified in 40 CFR Part 70. These permits are required for major sources with a PTE
(considering federally enforceable limitations) greater than 100 tpy for any criteria pollutant, 25 tpy for all
hazardous air pollutants (HAPs) in aggregate, or 10 tpy of any single HAP. Snowbird is a minor source
because the PTE of any criteria emissions does not exceed 100 tons per year (70 tons NOx due to the
nonattainment status of Salt Lake County), nor are the HAPs thresholds exceeded; therefore, a Title V
Operating permit is not needed.
5.3 NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR
POLLUTANTS (NESHAPS)
40 CFR Part 61 regulations do not apply to this facility. The first NESHAP regulations were developed
under the auspices of the original CAA. These standards are codified in 40 CFR Part 61 and address a
limited number of pollutants and industries.
Newer regulations are codified in 40 CFR Part 63 under the authority of the 1990 Clean Air Act
Amendments (CAAA). These standards regulate HAP emissions from specific source categories and
typically affect only major sources of HAPs; however, some affect minor sources of HAPs. Part 63
regulations are frequently called Maximum Achievable Control Technology (MACT) standards. Major HAP
sources have the PTE 10 tpy or more of any single HAP or 25 tpy or more of all combined HAP
emissions. At the Snowbird facility, potential emissions of individual HAPs will be less than 10 tpy and
combined HAP emissions will be less than 25 tpy. There will be no changes to the currently applicable
permitted equipment.
5.4 NEW SOURCE REVIEW (NSR) REQUIREMENTS
Salt Lake County is designated as a non-attainment area for PM2.5/10 and the entire Wasatch Front is in
ozone nonattainment. Snowbird evaluated the aggregated total of PM10, SO2, NOx. UDAQ rule R307-403-
5 discusses offset requirements for PM10 nonattainment areas. If the modified emissions are 25 tons or
greater, offsets of PM10 emissions are required. The total annual calculated tonnage decrease is -2.31
tpy; therefore, offsets are not necessary.
The proposed permitting action does not trigger any PSD actions. The prevention of significant
deterioration (PSD) regulations codified in 40 CFR Part 52 could potentially apply to the proposed facility.
The PSD rule applies to: (1) a new major source that has the potential to emit 100 tons per year or more
for any criteria pollutant for a facility that is one of the 28 industrial source categories listed in 40 CFR §
52.21(b)(1)(i)(a); or (2) a new major source that has the potential to emit 250 tons per year or more if the
facility is not on the list of industrial source categories; or (3) a modification to an existing major source
NOTICE OF INTENT

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that results in a net emission increase greater than a PSD significant emission rate as specified in 40
CFR § 52.21 (b)(23)(i); or (4) a modification to an existing minor source that is major in itself.
5.5 NEW SOURCE PERFORMANCE STANDARDS (NSPS)
New Source Performance Standards (NSPS) in 40 CFR Part 60 are applicable to new, modified, or
reconstructed stationary sources that meet or exceed specified applicability thresholds. 40 CFR Part 60,
Subpart IIII (Standards of Performance for Stationary Compression Ignition Internal Combustion
Engines). Snowbird will comply with all applicable requirements of the subpart for this new engine.
5.6 ACID RAIN REQUIREMENTS
The engines are not subject to the acid rain requirements. The acid rain requirements codified in 40 CFR
Parts 72-78 apply only to utilities and other facilities that combust fossil fuel and generate electricity for
wholesale or retail sale. The Title IV Acid Rain Program is for sources that use coal as a source of
combustion and sources that produce over 25 MW of power. 40 CFR Part 72, Subpart 7, of the Acid Rain
Program outlines exemption criteria for new sources. A unit with a name plate of 25 MW or less, does not
burn any coal or coal-derived fuels, and burns gaseous fuel with a sulfur content less than 0.05 percent is
exempt. The unit on site is 240 kW and burns exclusively low-sulfur diesel.
5.7 RISK MANAGEMENT PROGRAMS FOR CHEMICAL ACCIDENTAL
RELEASE PREVENTION
The facility is not subject to the Chemical Accidental Release Prevention Program and will not be required
to develop a Risk Management Plan (RMP). Facilities that produce, process, store, or use any regulated
toxic or flammable substance in excess of the thresholds listed in 40 CFR Part 68 must develop an RMP.
The facility does not store any regulated toxic or flammable substances in excess of the applicable
thresholds. An RMP is not necessary for this facility.
5.8 STATE RULES
The Utah Division of Administrative Rules (DAR) promulgates several emissions regulations that apply to
Snowbird in addition to those listed above.

5.8.1 General Requirements
Utah Administrative Code (UAC) R307-101 provides general definitions, terms, abbreviations and
references applicable to the upcoming Approval Order. Snowbird will comply with this requirement and
refer to the rules where necessary.
NOTICE OF INTENT

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5.8.2 General Requirements - Breakdowns
UAC R307-107 indicates the applicable general requirements for breakdown events. Breakdowns will be
reported within 24 hours of an incident with a written description of the event. Snowbird will comply with
the procedures and requirements outlined in R307-107 and submit the necessary information and reports
to UDAQ related to excess emissions due to startup, shutdown, scheduled maintenance, safety
measures, upsets, and breakdowns.
5.8.3 Emission Inventories
UAC R307-150 establishes requirements for emission inventory submittals. Snowbird will comply with this
rule where appropriate.
5.8.4 Permit: New and Modified Sources
UAC R307-401 establishes the permitting requirements for any new and modified sources. Snowbird will
comply with any permitting requirements as defined in the rule and that applies to the Approval Order.
NOTICE OF INTENT

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6.0 AIR POLLUTION CONTROL INFORMATION
Utah regulation R301-401-5(2)(d) requires that Best Available Control Technology (BACT) be applied to
all regulated air pollutants emitted from a facility. However, a reduction of emissions per R307-401-12
does not require a BACT analysis for this project.

NOTICE OF INTENT

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7.0 AMBIENT AIR QUALITY IMPACT ANALYSIS
Per UDAQ air quality modeling guidance and thresholds, an air quality dispersion modeling analysis is
required if estimated emissions exceed associated regulatory thresholds. All criteria pollutant estimates
are below regulatory thresholds. Additionally, all HAPs are less than the threshold limit value and
calculated emission threshold value. Finally, previous modeling was conducted for the 2019 AO.

NOTICE OF INTENT
Appendix A Site Plan

APPENDICES

NOTICE OF INTENT
Appendix A Site Plan

A.1

Appendix A SITE PLAN

EXISTING INFRASTRUCTURE
LIFTS: (NAME, TYPE, LENGTH (FT.))
L1 TRAM, 8392
L2 CHICKADEE, DOUBLE, 813
L3 PERUVIAN, DETACH. QUAD., 7403
L4 WILBERE, DOUBLE, 2014
L5 MID-GAD, DOUBLE, 4234
L6 GADZOOM, DETACH. QUAD., 6710
L7 GAD 2, DETACH. QUAD, 3856
L8 BABY THUNDER, DOUBLE,1850
L9 LITTLE CLOUD, DETACH. QUAD, 3502
L10 MINERAL BASIN EXPRESS,
DETACH. QUAD., 3492
L11 BALDY EXPRESS, DETACH.
QUAD., 3550
L12 TUNNEL, CONVEYOR, 611
L13 SKI SCHOOL CONVEYOR, 120
L14 W.A.S. CONVEYOR, 70
OTHER RECREATION FACILITIES:
R1 BARRIER FREE TRAIL
R2 MOUNTAIN BIKE TRAIL
R3 HIKING TRAIL TO WHITE PINE
R4 RIDGE HIKING TRAIL
R5 FISHING POND
R6 EVENT CENTER/SKI SCHOOL
CONVEYOR
R7 CLIMBING WALL
R8 PLAYGROUND AREA
R9 ZIP RIDER
R10 RACE HILL
R11 ALPINE SLIDE
R12 MOUNTAIN COASTER
BUILDINGS AND FACILITIES
B1 CREEKSIDE LODGE
B2 HILL MAINTENANCE
B3 CINDER BIN
B4 RACE BUILDINGS
B5 MID-GAD RESTAURANT
B6 IRON BLOSAM LODGE
B7 TENNIS
B8 KINDERHAUS
B9 THE INN
B10 THE LODGE AT SNOWBIRD
B11 SNOWBIRD CENTER
ADMINISTRATION
TRAM BAR
SHOPS
SKI SCHOOL
B12 CONFERENCE CENTER
TERRACE
B13 THE CLIFF LODGE
B14 EMPLOYEE HOUSING
B15 FIRE STATION
B16 HELIPORT: WASATCH POWDER
BIRD GUIDES
B17 ALTA-INTERCONNECT BUILDING
B18 RACE TEAM AND STORAGE
B19 PARKING STRUCTURE
B20 SNOWCAT STAGING AREA AND
FUEL TANK (future)
B21 HIDDEN PEAK BUILDING SITE
B22 ALPEN VISTA(future)
PATROL AND AVALANCHE CONTROL
FACILITIES
S1 HIDDEN PEAK BUILDING
S2 WILLOWS GUN AND STORAGE
S3 VILLAGE GUN AND STORAGE,
UDOT
S4 VALLEY HOWITZER AND
STORAGE, UDOT
S5 MINERAL AVALAUNCHER
S6 PERUVIAN AVALAUNCHER
S7 BALDY AVALAUNCHER
S8 BLACK JACK AVALAUNCHER
S9 LITTLE CLOUD AVALAUNCHER
S10 BANANA AVALAUNCHER
S11 DUCK NEST AVALAUNCHER
S12 GAD TWO PATROL BUILDING
S13 PERUVIAN POWDER CACHE
S14 VALLEY 75MM PACK HOWITZER
AND STORAGE
S15 GAD II STUDY PLOT
S16 BASE STUDY PLOT
S17 SNOWTEL SITE
UTILITY CORRIDORS
U1 HIDDEN PEAK SEWER, POWER,
COMMUNICATION
U2 MID-GAD WATER LINE
U3 PERUVIAN WATER LINE
U4 BASE UTILITY CORRIDOR,
CULINARY, SNOWMAKING & HIGH
VOLTAGE (MOUNTAIN FEED 2)
U5 PERUVIAN RESERVOIR
U6 SNOWMAKING, WATER, 25k POWER
SM1 SNOWMAKING VALVE VAULT
SM2 SNOWMAKING PUMPHOUSE
SM3 SNOWMAKING BOOSTER
PUMPHOUSE
SM4 CHICKADEE SNOWMAKING SPUR
SM5 PERUVIAN SNOWMAKING SPUR
SM6 WILBERE - EMMA SNOWMAKING
LOOP
SM7 MIG-GAD SNOWMAKING MAIN
SM8 LOWER EMMA SNOWMAKING
SM9 BABY THUNDER SNOWMAKING
SM10 GAD-2 SNOWMAKING SPUR
SM11 GAD-ZOOM SNOWMAKING SPUR
SM12 REGULATOR SNOWMAKING
SPUR
SM13 BOOSTER BOOSTER STATION
SM14 MINERAL PUMP STATION
SM15 PERUVIAN GULCH PUMP
STATION
POINT OF DIVERSION
W1 LITTLE CLOUD POD
W2 GAD-2 POD
SYMBOLS LEGEND
ACCESS GATE
AVALANCHE CONTROL STORAGE
AVALAUNCHER
POINT OF DIVERSION
LIFT
SUP BOUNDARY
DIRT ROAD
PAVED ROAD
SNOWMAKING LINE
SNOWMAKING HYDRANT
POWER LINE
UTILITY TRENCH
HIKING TRAIL
BIKE TRAIL
BUILDING
CONTOUR INTERVAL 50'
1200 ft.6000300
DATE: APRIL 2014
EXISTING CONDITIONS
NOTICE OF INTENT
Appendix B Emissions Calculations

B.1

Appendix B EMISSIONS CALCULATIONS

Emission Summary 12/8/2023
NG Engines Boilers Emerg Engs Total
NOx 36.94 8.50 5.06 50.50
CO 12.85 14.27 1.03 28.15
PM2.5 0.02 1.29 0.29 1.60
PM10 0.02 1.29 0.29 1.60
SO2 0.14 0.10 0.37 0.61
VOC 12.22 0.93 0.51 13.67
HAPs 8.14 0.32 0.01 8.46
CO2e 31,375 20,252 271 51,899
NG Engines Boilers1 Emerg Engs Total
NOx 36.94 6.51 5.06 48.51
CO 12.85 10.94 1.03 24.82
PM2.5 0.02 0.99 0.29 1.30
PM10 0.02 0.99 0.29 1.30
SO2 0.14 0.08 0.37 0.58
VOC 12.22 0.72 0.51 13.45
HAPs 8.14 0.25 0.01 8.39
CO2e 31,375 15,528 271 47,175
1. Boiler #2 is removed from the facility
NG Engines Boilers Emerg Engs Total Model Thresholds1,2 Modeling Required?
NOx 0.00 -1.98 0.00 -1.98 40 No
CO 0.00 -3.33 0.00 -3.33 100 No
PM2.5 0.00 -0.30 0.00 -0.30 15 No
PM10 0.00 -0.30 0.00 -0.30 15 No
SO2 0.00 -0.02 0.00 -0.02 40 No
VOC 0.00 -0.22 0.00 -0.22 N/A N/A
HAPs 0.00 -0.07 0.00 -0.07 N/A N/A
CO2e 0 -4,724 0.00 -4,724
1. Modifcation Modeling Thresholds per Table 1 of UDAQ Modeling Guidance
2. PM2.5/10 modeling is not required within SLC County
-2.31 Change of PM10, NOx and SO2 is less than 25 tpy. No offsets are required
Pollutant Facility-wide Pre-Project tpy
Pollutant Facility-wide Post-Project tpy
Pollutant Facility-wide Emission Delta
Stantec Consulting
NG Engines 12/8/2023
Natural Gas Engines HAPS lb/MMBtu1 lb/MMBtu2 Ford (lb/hr)3520 CAT (lb/hr)2 3512 CAT (lb/hr)2 Total (lb/hr)Ford (tpy)3520 CAT (tpy)3512 CAT (tpy)Total (tpy)
1,1,2,2 - Tetrachloroethane 2.53E-05 4.00E-05 2.48E-05 1.63E-03 5.05E-04 2.16E-03 1.24E-06 7.14E-03 2.21E-03 9.36E-03
Operating 1,1,2 - Trichloroethane 1.53E-05 3.18E-05 1.50E-05 1.30E-03 4.02E-04 1.71E-03 7.50E-07 5.68E-03 1.76E-03 7.44E-03
Hours 1,3-Butadiene 6.63E-04 2.67E-04 6.50E-04 1.09E-02 3.37E-03 1.49E-02 3.25E-05 4.77E-02 1.48E-02 6.25E-02
140 Ford SG-03 100 1,3-Dichloropropene 1.27E-05 2.64E-05 1.24E-05 1.08E-03 3.33E-04 1.42E-03 6.22E-07 4.71E-03 1.46E-03 6.17E-03
2912 Caterpillar G3520H 8760 2-Methylnaphthalene4 3.32E-05 1.35E-03 4.19E-04 1.77E-03 5.93E-03 1.84E-03 7.76E-03
2912 Caterpillar G3520H 8760 2,2,4-Trimethylpentane 2.50E-04 1.02E-02 3.16E-03 1.33E-02 4.46E-02 1.38E-02 5.85E-02
1804 Caterpillar G3512H 8760 Acenaphthene4 1.25E-06 5.10E-05 1.58E-05 6.67E-05 2.23E-04 6.91E-05 2.92E-04
Aceaphthylene4 5.53E-06 2.25E-04 6.98E-05 2.95E-04 9.87E-04 3.06E-04 1.29E-03
Acetaldehyde 2.79E-03 8.36E-03 2.73E-03 3.41E-01 1.06E-01 4.49E-01 1.37E-04 1.49E+00 4.62E-01 1.96E+00
Ford G3520H G3512H Ford G3520H G3512H Total Acrolein 2.63E-03 5.14E-03 2.58E-03 2.10E-01 6.49E-02 2.77E-01 1.29E-04 9.18E-01 2.84E-01 1.20E+00
lb/hr lb/hr3 lb/hr3 tpy tpy tpy tpy Benzene 1.58E-03 4.40E-04 1.55E-03 1.79E-02 5.56E-03 2.50E-02 7.74E-05 7.86E-02 2.43E-02 1.03E-01
NOx 2.21 0.5 0.5 2.17 6.42 1.99 1.08E-01 28.12 8.71 36.94 Benzo(b)fluoranthene4 1.66E-07 6.77E-06 2.10E-06 8.86E-06 2.96E-05 9.18E-06 3.88E-05
CO 0.351 1.73 1.78 0.34 2.22 0.71 1.72E-02 9.73 3.10 12.85 Benzo(e)pyrene4 4.15E-07 1.69E-05 5.24E-06 2.22E-05 7.41E-05 2.30E-05 9.71E-05
PM2.54 9.50E-03 2.45E-04 2.45E-04 0.009 3.14E-03 9.74E-04 4.66E-04 0.01 0.00 0.02 Benzo(g,h,i)perylene4 4.14E-07 1.69E-05 5.23E-06 2.21E-05 7.39E-05 2.29E-05 9.68E-05
PM104 9.50E-03 2.45E-04 2.45E-04 0.009 3.14E-03 9.74E-04 4.66E-04 0.01 0.00 0.02 Biphenyl 2.12E-04 8.64E-03 2.68E-03 1.13E-02 3.79E-02 1.17E-02 4.96E-02
SO24 5.88E-04 1.87E-03 1.87E-03 0.001 0.02 0.01 2.88E-05 0.10 0.03 0.14 Carbon Tetrachloride 1.77E-05 3.67E-05 1.73E-05 1.50E-03 4.63E-04 1.98E-03 8.67E-07 6.55E-03 2.03E-03 8.58E-03
VOC 2.96E-02 0.32 0.37 0.029 2.05 0.74 1.45E-03 9.00 3.22 12.22 Chlorobenzene 1.29E-05 3.04E-05 1.26E-05 1.24E-03 3.84E-04 1.64E-03 6.32E-07 5.43E-03 1.68E-03 7.11E-03
1. AP-42 Table 3.2-3 4-stroke Rich Burn for the Ford Engine Chloroform 1.37E-05 2.85E-05 1.34E-05 1.16E-03 3.60E-04 1.54E-03 6.71E-07 5.09E-03 1.58E-03 6.67E-03
2. Manufactuer specificiations Chrysene4 6.93E-07 2.83E-05 8.75E-06 3.70E-05 1.24E-04 3.83E-05 1.62E-04
3. Oxyidation catalyst controls CO (90%) and VOC (50%) as well as Formaldehyde (85%/65%)Ethylbenzene 2.48E-05 3.97E-05 2.43E-05 1.62E-03 5.01E-04 2.14E-03 1.22E-06 7.09E-03 2.20E-03 9.29E-03
4. AP-42 Table 3.2-3 $-stroke Lean Burn for the Cat Engines Ethylene Dibromide 2.13E-05 4.43E-05 2.09E-05 1.81E-03 5.59E-04 2.39E-03 1.04E-06 7.91E-03 2.45E-03 1.04E-02
Fluoranthene4 1.11E-06 4.53E-05 1.40E-05 5.93E-05 1.98E-04 6.14E-05 2.60E-04
Fluorene4 5.67E-06 2.31E-04 7.16E-05 3.03E-04 1.01E-03 3.14E-04 1.33E-03
Formaldehyde3 2.05E-02 0.34/0.12 2.01E-02 6.55E-01 1.67E-01 8.42E-01 1.00E-03 2.87E+00 7.32E-01 3.60
Methanol 3.06E-03 2.50E-03 3.00E-03 1.02E-01 3.16E-02 1.36E-01 1.50E-04 4.46E-01 1.38E-01 5.85E-01
Natural Gas kg/MMBtu1 g/hp-hr2 g/hp-hr2 Methylene Chloride 4.12E-05 2.00E-05 4.04E-05 8.15E-04 2.53E-04 1.11E-03 2.02E-06 3.57E-03 1.11E-03 4.68E-03
CO2 53.06 430 411 n-Hexane 1.11E-03 4.53E-02 1.40E-02 5.93E-02 1.98E-01 6.14E-02 2.60E-01
CH4 0.001 Naphthalene 9.71E-05 7.44E-05 9.52E-05 3.03E-03 9.40E-04 4.07E-03 4.76E-06 1.33E-02 4.12E-03 1.74E-02
N2O 0.0001 PAH 1.41E-04 2.69E-05 1.38E-04 1.10E-03 3.40E-04 1.57E-03 6.91E-06 4.80E-03 1.49E-03 6.30E-03
1. http://www.epa.gov/sites/production/files/2015-07/documents/emission-factors_2014.pdf Phenanthrene4 1.04E-05 4.24E-04 1.31E-04 5.55E-04 1.86E-03 5.75E-04 2.43E-03
2. G3520H and G3512H Spec Sheets Phenol 2.40E-05 9.78E-04 3.03E-04 1.28E-03 4.29E-03 1.33E-03 5.61E-03
Pyrene4 1.36E-06 5.54E-05 1.72E-05 7.26E-05 2.43E-04 7.52E-05 3.18E-04
Styrene 1.19E-05 2.36E-05 1.17E-05 9.62E-04 2.98E-04 1.27E-03 5.83E-07 4.21E-03 1.31E-03 5.52E-03
Engine CO2 CH4 N2O CO2e Tetrachloroethane 2.48E-06 1.01E-04 3.13E-05 1.32E-04 4.43E-04 1.37E-04 5.80E-04
Ford 5.72 0.00 0.00 6 Toluene 5.58E-04 4.08E-04 5.47E-04 1.66E-02 5.15E-03 2.23E-02 2.73E-05 7.29E-02 2.26E-02 9.54E-02
G3520H 12,091 0.20 0.02 12,102 Vinyl Chloride 7.18E-06 1.49E-05 7.04E-06 6.07E-04 1.88E-04 8.03E-04 3.52E-07 2.66E-03 8.24E-04 3.49E-03
G3520H 12,091 0.20 0.02 12,102 Xylene 1.95E-04 1.84E-04 1.91E-04 7.50E-03 2.32E-03 1.00E-02 9.56E-06 3.29E-02 1.02E-02 4.30E-02
G3512H 7,159 0.12 0.01 7,166 1. AP-42 Table 3.2-3 4-stroke Rich Burn for the Ford Engine 8.14
Total 31,347 12.87 15.34 31,375 2. AP-42 Table 3.2-3 4-stroke Lean Burn for the CAT Engines
3. Formaldehyde is 85%/65% controlled and the units of the emission factors are g-hp-hr (0.12 for G3512H and 0.34 G3520H)
4. Hazard pollutant because of POM
tons per year
GHG Emission Factors
G3512H
g/hp-hr2
Site Rating
HP Manufacturer Model
Pollutant lb/MMBtu1 G3520H
g/hp-hr2
Stantec Consulting
Boilers 12/8/2023
HAPS CAS EF (lb/MMscf)lb/hr tons/year
lb/MMscf Arsenic 7440-38-2 2.00E-04 5.95E-06 2.61E-05
CO 84 Benzene 71-43-2 2.10E-03 6.25E-05 2.74E-04
NOx2 50 Beryllium 7440-41-7 1.20E-05 3.57E-07 1.56E-06
PM2.5 7.6 Cadmium 7440-43-9 1.10E-03 3.27E-05 1.43E-04
PM10 7.6 Chromium 7440-47-3 1.40E-03 4.16E-05 1.82E-04
SO2 0.6 Cobalt 7440-48-4 8.40E-05 2.50E-06 1.09E-05
VOC 5.5 Copper 7440-50-8 8.50E-04 2.53E-05 1.11E-04
1. AP-42 Section 1.4, Tables 1 and 2 Dichlorobenzene 25321-22-6 1.20E-03 3.57E-05 1.56E-04
2. Low NOx burners Formaldehyde 50-00-0 7.50E-02 2.23E-03 9.77E-03
Hexane 110-54-3 1.80E+00 5.35E-02 2.35E-01
Lead 7439-92-1 5.00E-04 1.49E-05 6.51E-05
Manganese 7439-96-5 3.80E-04 1.13E-05 4.95E-05
Mercury 7439-97-6 2.60E-04 7.73E-06 3.39E-05
Molybdenum 7439-98-7 1.10E-03 3.27E-05 1.43E-04
Boilers MMBtu/hr CO NOx PM2.5 PM10 SO2 VOC Naphthalene 91-20-3 6.10E-04 1.81E-05 7.95E-05
BG-021 9.23 0.76 0.45 0.07 0.07 0.01 0.05 Nickel 7440-02-0 2.10E-03 6.25E-05 2.74E-04
BG-03 8.37 0.69 0.41 0.06 0.06 0.005 0.05 Selenium 7782-49-2 2.40E-05 7.14E-07 3.13E-06
BG-04 8.37 0.69 0.41 0.06 0.06 0.005 0.05 Toluene 108-88-3 3.40E-03 1.01E-04 4.43E-04
BG-05 8.37 0.69 0.41 0.06 0.06 0.005 0.05 2-Methylnapthalene1 91-57-6 2.40E-05 7.14E-07 3.13E-06
BG-06 5.23 0.43 0.26 0.04 0.04 0.003 0.03 3-Methylchloranthrene1 56-49-5 1.80E-06 5.35E-08 2.35E-07
39.57 30.34 7,12-Dimethylbenz(a)anthracene1 1.60E-05 4.76E-07 2.08E-06
1. Boiler #2 is removed from facility Acenaphthene1 83-32-9 1.80E-06 5.35E-08 2.35E-07
Acenaphthylene1 203-96-8 1.80E-06 5.35E-08 2.35E-07
Anthracene1 120-12-7 2.40E-06 7.14E-08 3.13E-07
Boilers MMBtu/hr CO NOx PM2.5 PM10 SO2 VOC Benz(a)anthracene1 56-55-3 1.80E-06 5.35E-08 2.35E-07
BG-022 9.23 3.33 1.98 0.30 0.30 0.02 0.22 Benzo(a)pyrene1 50-32-8 1.20E-06 3.57E-08 1.56E-07
BG-03 8.37 3.02 1.80 0.27 0.27 0.02 0.20 Benzo(b)fluoranthene1 205-99-2 1.80E-06 5.35E-08 2.35E-07
BG-04 8.37 3.02 1.80 0.27 0.27 0.02 0.20 Benzo(g,h,i)perylene1 191-24-2 1.20E-06 3.57E-08 1.56E-07
BG-05 8.37 3.02 1.80 0.27 0.27 0.02 0.20 Benzo(k)fluoranthene1 205-82-3 1.80E-06 5.35E-08 2.35E-07
BG-06 5.23 1.89 1.12 0.17 0.17 0.01 0.12 Chrysene1 218-01-9 1.80E-06 5.35E-08 2.35E-07
Total 14.27 8.50 1.29 1.29 0.10 0.93 Dibenzo(a,h)anthracene1 53-70-3 1.20E-06 3.57E-08 1.56E-07
1. Assumes 8,760 hr/yr or continual operation Dichlorobenzene1 25321-22-6 1.20E-03 3.57E-05 1.56E-04
2. Boiler #2 is removed Fluoranthene1 206-44-0 3.00E-06 8.92E-08 3.91E-07
Fluorene1 86-73-7 2.80E-06 8.33E-08 3.65E-07
Indeno(1,2,3-cd)pyrene1 193-39-5 1.80E-06 5.35E-08 2.35E-07
Phenanathrene1 85-01-8 1.70E-05 5.06E-07 2.21E-06
Natural Gas kg/MMBtu Pyrene1 129-00-0 5.00E-06 1.49E-07 6.51E-07
CO2 53.06 119066.64 2.46E-01
CH4 0.001 2.244 1. The pollutant is a HAP because it is considered a polycyclic organic matter (POM).
N2O 0.0001 0.2244 2. Emission factors are based on AP-42 (1998), Section 1.4, Natural Gas Combustion, Table 1.4-3 and 1.4-4.
* 40 CFR part 98 Subpart C 3. The Total HAPs amount is lower as seven pollutants were included as HAPs in the previoous application when they are not.
http://www.epa.gov/sites/production/files/2015-07/documents/emission-factors_2014.pdf This includes: Barium, pentane, propane, vanadium, zinc, ethane, butane. Also Boiler 2 is removed
Boiler CO2 CH4 N2O CO2e
BG-02 4,719 0.09 0.01 4,724
BG-03 4,279 0.08 0.01 4,284
BG-04 4,279 0.08 0.01 4,284
BG-05 4,279 0.08 0.01 4,284
BG-06 2,674 0.05 0.01 2,677
Total 20,232 9.53 11.36 20,252
Pounds per Hour
Tons per Year1
Emission Factors
GHG Emission Factors
tons per year
Stantec Consulting
Current_Emergency_Engines 12/8/2023
Gen Set Eng HP Hr/yr NOx CO SO2 PM2.5 PM10 VOC lb/hr TPY lb/hr TPY lb/hr TPY lb/hr TPY lb/hr TPY lb/hr TPY
IC-01 435 100 3.100E-02 6.680E-03 2.050E-03 2.200E-03 2.200E-03 2.470E-03 13.49 0.67 2.91 0.15 0.89 0.04 0.96 0.05 0.96 0.05 1.07 0.05
IC-02 280 100 3.100E-02 6.680E-03 2.050E-03 2.200E-03 2.200E-03 2.470E-03 8.68 0.43 1.87 0.09 0.57 0.03 0.62 0.03 0.62 0.03 0.69 0.03
IC-03A1 1050 100 1.134E-02 8.220E-04 1.214E-05 1.808E-04 1.808E-04 3.288E-04 11.91 0.60 0.86 0.04 0.01 0.00 0.19 0.01 0.19 0.01 0.35 0.02
IC-03B1 138 100 1.003E-02 1.973E-03 2.050E-03 1.315E-04 1.315E-04 2.470E-03 1.38 0.07 0.27 0.01 0.28 0.01 0.02 0.00 0.02 0.00 0.34 0.02
IC-04A1 143 100 9.535E-03 6.576E-04 2.050E-03 1.151E-04 1.151E-04 2.470E-03 1.36 0.07 0.09 0.00 0.29 0.01 0.02 0.00 0.02 0.00 0.35 0.02
IC-04B 143 100 3.100E-02 6.680E-03 2.050E-03 2.200E-03 2.200E-03 2.470E-03 4.43 0.22 0.96 0.05 0.29 0.01 0.31 0.02 0.31 0.02 0.35 0.02
IC-05A1 139 100 3.100E-02 6.680E-03 2.050E-03 4.409E-04 4.409E-04 2.470E-03 4.31 0.22 0.93 0.05 0.28 0.01 0.06 0.00 0.06 0.00 0.34 0.02
IC-05B1 139 100 6.083E-03 2.959E-03 2.050E-03 3.452E-04 3.452E-04 2.470E-03 0.85 0.04 0.41 0.02 0.28 0.01 0.05 0.00 0.05 0.00 0.34 0.02
IC-06 137 100 3.100E-02 6.680E-03 2.050E-03 2.200E-03 2.200E-03 2.470E-03 4.25 0.21 0.92 0.05 0.28 0.01 0.30 0.02 0.30 0.02 0.34 0.02
IC-07 200 100 3.100E-02 6.680E-03 2.050E-03 2.200E-03 2.200E-03 2.470E-03 6.20 0.31 1.34 0.07 0.41 0.02 0.44 0.02 0.44 0.02 0.49 0.02
IC-08 100 100 3.100E-02 6.680E-03 2.050E-03 2.200E-03 2.200E-03 2.470E-03 3.10 0.16 0.67 0.03 0.21 0.01 0.22 0.01 0.22 0.01 0.25 0.01
IC-09 (gas)165 100 1.100E-02 6.960E-03 5.910E-04 7.210E-04 7.210E-04 1.500E-02 1.82 0.09 1.15 0.06 0.10 0.00 0.12 0.01 0.12 0.01 2.48 0.12
IC-10 435 100 3.100E-02 6.680E-03 2.050E-03 2.200E-03 2.200E-03 2.470E-03 13.49 0.67 2.91 0.15 0.89 0.04 0.96 0.05 0.96 0.05 1.07 0.05
IC-011 475 100 3.100E-02 6.680E-03 2.050E-03 2.200E-03 2.200E-03 2.470E-03 14.73 0.74 3.17 0.16 0.97 0.05 1.05 0.05 1.05 0.05 1.17 0.06
SG-01A1 548 100 7.363E-03 1.168E-03 2.050E-03 1.014E-04 1.014E-04 8.818E-05 4.04 0.20 0.64 0.03 1.12 0.06 0.06 0.00 0.06 0.00 0.05 0.00
SG-02 100 100 3.100E-02 6.680E-03 2.050E-03 2.200E-03 2.200E-03 2.470E-03 3.10 0.16 0.67 0.03 0.21 0.01 0.22 0.01 0.22 0.01 0.25 0.01
SG-04 134 100 3.100E-02 6.680E-03 2.050E-03 2.200E-03 2.200E-03 2.470E-03 4.15 0.21 0.90 0.04 0.27 0.01 0.29 0.01 0.29 0.01 0.33 0.02
1. Manufacturer Guarantee/EPA Certification 101.27 5.06 20.65 1.03 7.38 0.37 5.87 0.29 5.87 0.29 10.27 0.51
2. AP-42 Table 3.3-1
3. The IC-03A is greater than 600 hp. Thus AP-42 Section 3.4 was used. Also, it was assumed that ULSD (15 ppm or 0.0015%) is used
0.001644 g/kw-hr conversion to lb/hp-hr; used where appropriate
HAP EMISSIONS
Gen Set Eng HP Hr/yr Benzene Toluene Xylene Naphthalene Formaldehyde Acetaldehyde Acrolein 1,3-Butadiene Benzene Toluene Xylene Naphthalene Formaldehyde Acetaldehyde Acrolein 1,3-Butadiene Benzene Toluene Xylene Naphthalene Formaldehyde Acetaldehyde Acrolein 1,3-Butadiene
IC-01 435 100 9.330E-04 4.090E-04 2.850E-04 8.480E-05 1.180E-03 7.670E-04 9.250E-05 3.91E-05 1.420E-04 6.227E-05 4.339E-05 1.291E-05 1.797E-04 1.168E-04 1.408E-05 5.953E-06 2.841E-03 1.245E-03 8.678E-04 2.582E-04 3.593E-03 2.336E-03 2.817E-04 1.191E-04
IC-02 280 100 9.330E-04 4.090E-04 2.850E-04 8.480E-05 1.180E-03 7.670E-04 9.250E-05 3.91E-05 9.143E-05 4.008E-05 2.793E-05 8.310E-06 1.156E-04 7.517E-05 9.065E-06 3.832E-06 1.829E-03 8.016E-04 5.586E-04 1.662E-04 2.313E-03 1.503E-03 1.813E-04 7.664E-05
IC-03A2 1050 100 7.760E-04 2.810E-04 1.930E-04 1.300E-04 7.890E-05 2.520E-05 7.880E-06 2.852E-04 1.033E-04 7.093E-05 4.778E-05 2.900E-05 9.261E-06 2.896E-06 0.000E+00 5.704E-03 2.065E-03 1.419E-03 9.555E-04 5.799E-04 1.852E-04 5.792E-05 0.000E+00
IC-03B 138 100 9.330E-04 4.090E-04 2.850E-04 8.480E-05 1.180E-03 7.670E-04 9.250E-05 3.91E-05 4.506E-05 1.975E-05 1.377E-05 4.096E-06 5.699E-05 3.705E-05 4.468E-06 1.889E-06 9.013E-04 3.951E-04 2.753E-04 8.192E-05 1.140E-03 7.409E-04 8.936E-05 3.777E-05
IC-04A 143 100 9.330E-04 4.090E-04 2.850E-04 8.480E-05 1.180E-03 7.670E-04 9.250E-05 3.91E-05 4.670E-05 2.047E-05 1.426E-05 4.244E-06 5.906E-05 3.839E-05 4.630E-06 1.957E-06 9.339E-04 4.094E-04 2.853E-04 8.488E-05 1.181E-03 7.678E-04 9.259E-05 3.914E-05
IC-04B 143 100 9.330E-04 4.090E-04 2.850E-04 8.480E-05 1.180E-03 7.670E-04 9.250E-05 3.91E-05 4.670E-05 2.047E-05 1.426E-05 4.244E-06 5.906E-05 3.839E-05 4.630E-06 1.957E-06 9.339E-04 4.094E-04 2.853E-04 8.488E-05 1.181E-03 7.678E-04 9.259E-05 3.914E-05
IC-05A 139 100 9.330E-04 4.090E-04 2.850E-04 8.480E-05 1.180E-03 7.670E-04 9.250E-05 3.91E-05 4.539E-05 1.990E-05 1.387E-05 4.126E-06 5.741E-05 3.731E-05 4.500E-06 1.902E-06 9.078E-04 3.980E-04 2.773E-04 8.251E-05 1.148E-03 7.463E-04 9.000E-05 3.804E-05
IC-05B 139 100 9.330E-04 4.090E-04 2.850E-04 8.480E-05 1.180E-03 7.670E-04 9.250E-05 3.91E-05 4.539E-05 1.990E-05 1.387E-05 4.126E-06 5.741E-05 3.731E-05 4.500E-06 1.902E-06 9.078E-04 3.980E-04 2.773E-04 8.251E-05 1.148E-03 7.463E-04 9.000E-05 3.804E-05
IC-06 137 100 9.330E-04 4.090E-04 2.850E-04 8.480E-05 1.180E-03 7.670E-04 9.250E-05 3.91E-05 4.474E-05 1.961E-05 1.367E-05 4.066E-06 5.658E-05 3.678E-05 4.435E-06 1.875E-06 8.947E-04 3.922E-04 2.733E-04 8.132E-05 1.132E-03 7.356E-04 8.871E-05 3.750E-05
IC-07 200 100 9.330E-04 4.090E-04 2.850E-04 8.480E-05 1.180E-03 7.670E-04 9.250E-05 3.91E-05 6.531E-05 2.863E-05 1.995E-05 5.936E-06 8.260E-05 5.369E-05 6.475E-06 2.737E-06 1.306E-03 5.726E-04 3.990E-04 1.187E-04 1.652E-03 1.074E-03 1.295E-04 5.474E-05
IC-08 100 100 9.330E-04 4.090E-04 2.850E-04 8.480E-05 1.180E-03 7.670E-04 9.250E-05 3.91E-05 3.266E-05 1.432E-05 9.975E-06 2.968E-06 4.130E-05 2.685E-05 3.238E-06 1.369E-06 6.531E-04 2.863E-04 1.995E-04 5.936E-05 8.260E-04 5.369E-04 6.475E-05 2.737E-05
IC-09 (gas)165 100 9.330E-04 4.090E-04 2.850E-04 8.480E-05 1.180E-03 7.670E-04 9.250E-05 3.91E-05 5.388E-05 2.362E-05 1.646E-05 4.897E-06 6.815E-05 4.429E-05 5.342E-06 2.258E-06 1.078E-03 4.724E-04 3.292E-04 9.794E-05 1.363E-03 8.859E-04 1.068E-04 4.516E-05
IC-10 435 100 9.330E-04 4.090E-04 2.850E-04 8.480E-05 1.180E-03 7.670E-04 9.250E-05 3.91E-05 1.420E-04 6.227E-05 4.339E-05 1.291E-05 1.797E-04 1.168E-04 1.408E-05 5.953E-06 2.841E-03 1.245E-03 8.678E-04 2.582E-04 3.593E-03 2.336E-03 2.817E-04 1.191E-04
IC-011 475 100 9.330E-04 4.090E-04 2.850E-04 8.480E-05 1.180E-03 7.670E-04 9.250E-05 3.91E-05 1.551E-04 6.800E-05 4.738E-05 1.410E-05 1.962E-04 1.275E-04 1.538E-05 6.500E-06 3.102E-03 1.360E-03 9.476E-04 2.820E-04 3.924E-03 2.550E-03 3.076E-04 1.300E-04
SG-01A 548 100 9.330E-04 4.090E-04 2.850E-04 8.480E-05 1.180E-03 7.670E-04 9.250E-05 3.91E-05 1.789E-04 7.845E-05 5.466E-05 1.626E-05 2.263E-04 1.471E-04 1.774E-05 7.499E-06 3.579E-03 1.569E-03 1.093E-03 3.253E-04 4.526E-03 2.942E-03 3.548E-04 1.500E-04
SG-02 100 100 9.330E-04 4.090E-04 2.850E-04 8.480E-05 1.180E-03 7.670E-04 9.250E-05 3.91E-05 3.266E-05 1.432E-05 9.975E-06 2.968E-06 4.130E-05 2.685E-05 3.238E-06 1.369E-06 6.531E-04 2.863E-04 1.995E-04 5.936E-05 8.260E-04 5.369E-04 6.475E-05 2.737E-05
SG-04 134 100 9.330E-04 4.090E-04 2.850E-04 8.480E-05 1.180E-03 7.670E-04 9.250E-05 3.91E-05 4.376E-05 1.918E-05 1.337E-05 3.977E-06 5.534E-05 3.597E-05 4.338E-06 1.834E-06 8.752E-04 3.836E-04 2.673E-04 7.954E-05 1.107E-03 7.194E-04 8.677E-05 3.668E-05
1. AP-42 Table 3.3-2, assumes 7,000 Btu/hp-hr brake-specific fuel consumption 1.497E-03 6.345E-04 4.411E-04 1.579E-04 1.562E-03 1.005E-03 1.230E-04 5.079E-05 2.994E-02 1.269E-02 8.822E-03 3.158E-03 3.123E-02 2.011E-02 2.461E-03 1.016E-03
2. AP-42 Table 3.4, assumes 7,000 Btu/hp-hr brake-specific fuel consumption Total HAPS (TPY)5.471E-03
3. Note that the previous analysis assumed propylene as a HAP when it is not, but excluded naphthalene. These errors have been updated
Diesel Fuel kg/MMBtu*Gasoline kg/MMBtu*
CO2 73.96 CO2 66.88
CH4 3.00E-03 CH4 3.00E-03
N2O 6.00E-04 N2O 6.00E-04
* 40 CFR part 98 Subpart C
http://www.epa.gov/sites/production/files/2015-07/documents/emission-factors_2014.pdf
CO2 CH4 N2O CO2e
IC-01 24.77 1.00E-03 2.01E-04 24.86
IC-02 15.95 6.47E-04 1.29E-04 16.00
IC-03A 59.80 2.43E-03 4.85E-04 60.00
IC-03B 7.86 3.19E-04 6.38E-05 7.89
IC-04A 8.14 3.30E-04 6.61E-05 8.17
IC-04B 8.14 3.30E-04 6.61E-05 8.17
IC-05A 7.92 3.21E-04 6.42E-05 7.94
IC-05B 7.92 3.21E-04 6.42E-05 7.94
IC-06 7.80 3.16E-04 6.33E-05 7.83
IC-07 11.39 4.62E-04 9.24E-05 11.43
IC-08 5.69 2.31E-04 4.62E-05 5.71
IC-09 (gas)8.50 3.81E-04 7.62E-05 8.53
IC-10 24.77 1.00E-03 2.01E-04 24.86
IC-011 27.05 1.10E-03 2.19E-04 27.14
SG-01A 31.21 1.27E-03 2.53E-04 31.32
SG-02 5.69 2.31E-04 4.62E-05 5.71
SG-04 7.63 3.10E-04 6.19E-05 7.66
Total 270.24 0.27 0.66 271.17
Assumes 7,000 Btu/hp-hr brake-specific fuel consumption
GHG Emission Factors
tons per year
PM10 VOClb/hp-hr Emission Factors 1,2,3 Emissions
Emissions lb/hrlb/MMBtu Emission Factors 1,3 Emissions Tons per Year
NOx CO SO2 PM2.5
Stantec Consulting
NOTICE OF INTENT
Appendix C UDAQ Forms

C.1

Appendix C UDAQ FORMS
1 of 1
Form 2 Date ____________
Company Information/Notice of Intent (NOI)
Utah Division of Air Quality
New Source Review Section
Application for: □ Initial Approval Order □Approval Order Modification
General Owner and Source Information
1.Company name and mailing address:
____________________________
____________________________
____________________________
Phone No.: ( )
Fax No.: ( )
2.Company** contact for environmental matters:
____________________________
Phone no.: ( )
Email: _______________________
** Company contact only; consultant or independent contractor contact
information can be provided in a cover letter
3.Source name and physical address (if different from
above):____________________________
____________________________
____________________________
Phone no.: ( )
Fax no.: ( )
4.Source Property Universal Transverse Mercator
coordinates (UTM), including System and Datum:
UTM:_________________________
X:____________________________
Y:____________________________
5.The Source is located in:__________________ County 6.Standard Industrial Classification Code (SIC)
__ __ __ __
7.If request for modification, AO# to be modified: DAQE #__________________ DATED: ____/____/____
8.Brief (50 words or less) description of process.
Electronic NOI
9.A complete and accurate electronic NOI submitted to DAQ Permitting Mangers Jon Black ([e-mail]) or Alan
Humpherys ([e-mail]) can expedite review process. Please mark application type.
Hard Copy Submittal Electronic Copy Submittal □ Both
Authorization/Signature
I hereby certify that the information and data submitted in and with this application is completely true, accurate and
complete, based on reasonable inquiry made by me and to the best of my knowledge and belief.
Signature: Title:
_______________________________________
Name (Type or print)
Telephone Number:
( )
Email:
Date:
NOTICE OF INTENT
Appendix D Source Size Determination

D.1

Appendix D SOURCE SIZE DETERMINATION
*Meaning the source categories listed in R307-415-3 (2) “Major Source” (b)(i – xxvii)
**”Non-fugitive emissions" means those emissions which could reasonably pass through a stack, chimney, vent, or
other functionally equivalent opening (R307-401-2 “Fugitive emissions”).

This document is intended for guidance and educational purposes only. It is not intended to include all possible
scenarios. The DAQ NSR Section should be contacted for site specific requirements.

Will annual potential
emissions be less than 5
tons for any criteria
pollutant, 500 pounds for
any HAP, and 2,000 pounds
for all HAPs combined?
START
Will annual potential
emissions, including fugitives,
be less than 100 tons for any
criteria pollutant, 10 tons for
any HAP, 25 tons for all HAPs
combined, and 100,000 tons
for CO2 equivalents?
Is the source a
listed* source
category?
END
Are non-fugitive** annual
potential emissions less than
100 tons for any criteria
pollutant, 10 tons for any
HAP, 25 tons for all HAPs
combined, and 100,000 tons
for CO2 equivalents?
April 26, 2011

Source Type Determination

YES

NO YES

YES

NO

NO

YES

NO

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

GARY R. HERBERT
Governor

GREG BELL
Lieutenant Governor

Department of
Environmental Quality

Amanda Smith
Executive Director

DIVISION OF AIR QUALITY
Bryce Bird
Acting Director

Source is a Small Source
(AO not required. Source may
register as a small source, but
registration is not required)
Source is a
Minor Source
Source is a Title V Major Source.
PSD may apply; contact a DAQ NSR
Engineer for details.

Snowbird is considered a Minor Source as annual potentials are below 100 tons for all criteria
pollutants, 10 tons for any single HAP, 25 tons for all combined HAPs and 100,000 tonnes CO2e.
NOTICE OF INTENT
Appendix E Offset Requirements

E.1

Appendix E OFFSET REQUIREMENTS
Offset requirements are not necessary. Please see Sections 4.1 and 5.4 of the application for details.