DAQ-2025-000283

DAQE-AN157040003-25

{{$d1 }}

Randy Means
Swanson Industries, Inc.
610 Industrial Road
Helper, UT 84526
[e-mail]

Dear Randy Means:

Re: Approval Order: Modification to Approval Order DAQE-AN157040002-22 to Revise the
Baghouse Pressure Drop Range and Add Solvent Parts Washers and a Cleaner
Project Number: N157040003

The attached Approval Order (AO) is issued pursuant to the Notice of Intent (NOI) received on January
30, 2024. Swanson Industries, Inc. must comply with the requirements of this AO, all applicable state
requirements (R307), and Federal Standards.

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

Sincerely,

{{$s }}

Bryce C. Bird
Director

BCB:EH:jg

cc: Southeastern Utah District 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 15, 2025

STATE OF UTAH
Department of Environmental Quality
Division of Air Quality

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

APPROVAL ORDER
DAQE-AN157040003-25
Modification to Approval Order DAQE-AN157040002-22
to Revise the Baghouse Pressure Drop Range and Add
Solvent Parts Washers and a Cleaner

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

Issued to
Swanson Industries, Inc. - Mining Equipment Restoration

Issued On
{{$d2 }}

Issued By

{{$s }}

Bryce C. Bird
Director
Division of Air Quality

January 15, 2025
TABLE OF CONTENTS

TITLE/SIGNATURE PAGE ....................................................................................................... 1
GENERAL INFORMATION ...................................................................................................... 3
CONTACT/LOCATION INFORMATION ............................................................................... 3
SOURCE INFORMATION ........................................................................................................ 3
General Description ................................................................................................................ 3
NSR Classification .................................................................................................................. 3
Source Classification .............................................................................................................. 3
Applicable Federal Standards ................................................................................................. 3
Project Description.................................................................................................................. 4
SUMMARY OF EMISSIONS .................................................................................................... 4
SECTION I: GENERAL PROVISIONS .................................................................................... 5
SECTION II: PERMITTED EQUIPMENT .............................................................................. 5
SECTION II: SPECIAL PROVISIONS ..................................................................................... 6
PERMIT HISTORY ..................................................................................................................... 9
ACRONYMS ............................................................................................................................... 10

DAQE-AN157040003-25
Page 3

GENERAL INFORMATION

CONTACT/LOCATION INFORMATION

Owner Name Source Name
Swanson Industries, Inc. Swanson Industries, Inc. - Mining Equipment Restoration

Mailing Address Physical Address
610 Industrial Road 610 Industrial Road
Helper, UT 84526 Helper, UT 84526

Source Contact UTM Coordinates
Name: Randy Means 512,029 m Easting
Phone: [phone],392,111 m Northing
Email: [e-mail] Datum NAD83
UTM Zone 12
SIC code 3053 (Gaskets, Packing, & Sealing Devices)

SOURCE INFORMATION
General Description
Swanson Industries, Inc. (Swanson) operates a mining equipment repair and maintenance facility located
in Helper, Carbon County. The repair and maintenance operations are conducted in two (2) shop
buildings: the rebuild shop and the jack shop. The activities taking place are abrasive blasting and
grinding; parts cleaning, painting, and coating; fuel combustion; and welding and cutting, including a
laser cladding process. Natural gas is used to operate space and water heaters for the facility.

NSR Classification
Minor Modification at Minor Source

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

Applicable Federal Standards
MACT (Part 63), A: General Provisions
MACT (Part 63), XXXXXX: National Emission Standards for Hazardous Air Pollutants Area
Source Standards for Nine (9) Metal Fabrication and Finishing Source Categories
DAQE-AN157040003-25
Page 4

Project Description
Swanson has requested to revise the pressure drop range from between 3 and 8 inches of water column to
between 0.5 and 6 inches of water column. The change in pressure drop range is not expected to affect
emissions from the baghouse.

The source has also requested to add six (6) solvent parts washers. The parts washers are rated at 15, 25,
and 32 gallons, two (2) each.

In addition to the modification mentioned above, the source has also requested to add a small ultrasonic
cleaner. The cleaner is conservatively estimated to use one (1) gallon of non-HAP VOC-containing acid.

VOC and HAP emission increases from the parts washers and the ultrasonic cleaner are estimated, and
the site-wide PTEs are updated.

SUMMARY OF EMISSIONS

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

Criteria Pollutant Change (TPY) Total (TPY)
CO2 Equivalent 0 687.00
Carbon Monoxide 0 0.71
Nitrogen Oxides 0 1.74
Particulate Matter - PM10 0 4.72
Particulate Matter - PM2.5 0 0.72
Sulfur Dioxide 0 0.08
Volatile Organic Compounds 2.02 6.82

Hazardous Air Pollutant Change (lbs/yr) Total (lbs/yr)
Benzene (Including Benzene From Gasoline) (CAS #71432) 1660
Chromium Compounds (CAS #CMJ500) 10 40
Cumene (CAS #98828) 3960
Ethyl Benzene (CAS #100414) 3960
Manganese (TSP) (CAS #7439965) 0 40
Naphthalene (CAS #91203) 3960
Nickel (CAS #7440020) 2 40
Toluene (CAS #108883) 3960 4240
Xylenes (Isomers And Mixture) (CAS #1330207) 3960 10260
Change (TPY) Total (TPY)
Total HAPs 1.98 5.32

DAQE-AN157040003-25
Page 5

SECTION I: GENERAL PROVISIONS

I.1 All definitions, terms, abbreviations, and references used in this AO conform to those used in the UAC R307 and 40 CFR. Unless noted otherwise, references cited in these AO conditions refer to those rules. [R307-101] I.2 The limits set forth in this AO shall not be exceeded without prior approval. [R307-401]
I.3 Modifications to the equipment or processes approved by this AO that could affect the emissions covered by this AO must be reviewed and approved. [R307-401-1] I.4 All records referenced in this AO or in other applicable rules, which are required to be kept by the owner/operator, shall be made available to the Director or Director's representative upon request, and the records shall include the two-year period prior to the date of the request. Unless otherwise specified in this AO or in other applicable state and federal rules, records shall be kept for a minimum of two (2) years. [R307-401-8]
I.5 At all times, including periods of startup, shutdown, and malfunction, owners and operators shall, to the extent practicable, maintain and operate any equipment approved under this AO, including associated air pollution control equipment, in a manner consistent with good air pollution control practice for minimizing emissions. Determination of whether acceptable operating and maintenance procedures are being used will be based on information available to the Director which may include, but is not limited to, monitoring results, opacity observations, review of operating and maintenance procedures, and inspection of the source. All maintenance performed on equipment authorized by this AO shall be recorded. [R307-401-4] I.6 The owner/operator shall comply with UAC R307-107. General Requirements: Breakdowns. [R307-107]
I.7 The owner/operator shall comply with UAC R307-150 Series. Emission Inventories. [R307-150] I.8 The owner/operator shall submit documentation of the status of construction or modification to the Director within 18 months from the date of this AO. This AO may become invalid if construction is not commenced within 18 months from the date of this AO or if construction is discontinued for 18 months or more. To ensure proper credit when notifying the Director, send the documentation to the Director, attn.: NSR Section. [R307-401-18]

SECTION II: PERMITTED EQUIPMENT
II.A THE APPROVED EQUIPMENT
II.A.1 Swanson Industries
Coal Mining Equipment Repair and Maintenance
II.A.2 Outdoor Abrasive Blasting Process
II.A.3 Spray Booths Two (2) Paint Booths
Control: Particulate Filters

DAQE-AN157040003-25
Page 6

II.A.4 Electric Arc Welders Control: Baghouse II.A.5 Laser Cladding Device Control: Baghouse

II.A.6 Various Heaters and Boilers Rating: <5 MMBtu/hr each Fuel: Natural Gas Included for information purposes only II.A.7 Parts Washers - new equipment
Six (6) parts washers Two (2) with 15-gallon capacity each Two (2) with 25-gallon capacity each
Two (2) with 32-gallon capacity each
II.A.8 Ultrasonic Cleaner - new equipment

SECTION II: SPECIAL PROVISIONS II.B REQUIREMENTS AND LIMITATIONS
II.B.1 Plantwide Requirements
II.B.1.a Unless otherwise specified in this AO, the owner/operator shall not allow visible emissions from the mining equipment repair and maintenance shop to exceed 20% opacity. [R307-401-8]
II.B.1.a.1 Unless otherwise specified in this AO, opacity observations of emissions from stationary sources
shall be conducted according to 40 CFR 60, Appendix A, Method 9. [R307-401-8]
II.B.2 VOC & HAP Requirements
II.B.2.a The owner/operator shall not emit more than the following from evaporative sources (painting,
printing, coating, and/or cleaning) on site:
6.82 tons per rolling 12-month period of VOCs
2.12 tons per rolling 12-month period of toluene 5.13 tons per rolling 12-month period of xylene
0.83 tons per rolling 12-month period of benzene
1.98 tons per rolling 12-month period of ethyl benzene 1.98 tons per rolling 12-month period of naphthalene
1.98 tons per rolling 12-month period of cumene
5.32 tons per rolling 12-month period of all HAPs combined.
[R307-401-8]
DAQE-AN157040003-25
Page 7

II.B.2.a.1 The owner/operator shall calculate a new 12-month total by the 20th day of each month using data from the previous 12 months. The owner/operator shall use a mass-balance method to calculate emissions from evaporative sources. The owner/operator may use the following equations with applicable units to comply with the mass-balance method: VOCs = [% VOCs by Weight/100] x [Density] x [Volume Consumed] HAP = [% HAP by Weight/100] x [Density] x [Volume Consumed] [R307-401-8]
II.B.2.a.2 The owner/operator shall use a mass-balance method to quantify any amount of VOCs and HAPs reclaimed. The owner/operator shall subtract the amount of VOCs and HAPs reclaimed from the quantities calculated above to provide the monthly total emissions of VOCs and HAPs.
[R307-401-8]
II.B.2.a.3 The owner/operator shall keep records each month of the following: A. The name (as per SDS) of the VOC- and HAP-emitting material B. The maximum percent by weight of VOCs and each HAP in each material used C. The density of each material used D. The volume of each VOC- and HAP-emitting material used E. The amount of VOCs and the amount of each HAP emitted from each material F. The amount of VOCs and the amount of each HAP reclaimed and/or controlled from each material G. The total amount of VOCs, the total amount of each HAP, and the total amount of all HAPs combined emitted from all materials (in tons). [R307-401-8]
II.B.2.b The owner/operator shall keep the parts washers and the ultrasonic cleaner closed when not in use. [R307-401-8]

II.B.3 Outdoor Abrasive Blasting Process Requirements
II.B.3.a The owner/operator shall comply with all applicable requirements of R307- 206, Emission Standards: Abrasive Blasting. [R307-206]

II.B.3.b The owner/operator shall not exceed 40% opacity from the outdoor abrasive blasting process, except for an aggregate period of three (3) minutes in any one (1) hour. [R307-206-4]
II.B.3.c The owner/operator shall not use more than 342 tons of abrasive blasting medium per rolling
12-month period in the abrasive blasting process. [R307-401-8]

DAQE-AN157040003-25
Page 8

II.B.3.c.1 The owner/operator shall: A. Determine the amount of abrasive blast medium used in the abrasive blasting booth with process scales and inventory records B. Record abrasive blast medium utilized in the abrasive blasting booth on a monthly basis C. Use the abrasive blast medium used in the abrasive blasting booth data to calculate a new 12-month total by the 20th day of each month using data from the previous 12 months D. Keep the records of abrasive blast medium used in the abrasive blasting booth for all periods the plant is in operation. [R307-401-8] II.B.4 Welding and Cladding Device Requirements
II.B.4.a The owner/operator shall control emissions from arc welding activities and laser cladding devices with a baghouse. [R307-401-8] II.B.4.b The owner/operator shall install a manometer or magnehelic pressure gauge to measure the static
pressure differential across the baghouse. [R307-401-8]

II.B.4.c The owner/operator shall maintain the static pressure differential of the baghouse between 0.5 and 6 inches of water column as measured on the pressure gauge. [R307-401-8]
II.B.4.c.1 The pressure gauge shall measure the static pressure differential in one-inch water column increments or less. [R307-401-8]

II.B.4.c.2 The owner/operator shall maintain the following records of the static pressure differentials. A. Unit identification B. Daily static pressure differential readings C. Date of reading. [R307-401-8]
II.B.4.d At least once every 12 months, the owner/operator shall calibrate the baghouse pressure gauge in accordance with the manufacturer's instructions or replace the pressure gauge. [R307-401-8]

II.B.4.d.1 The owner/operator shall maintain records of the pressure gauge calibrations and replacements. [R307-401-8]
II.B.5 Paint Booth Requirements
II.B.5.a The owner/operator shall not allow visible emissions from the paint booth to exceed 10% opacity. [R307-401-8]
II.B.5.b The owner/operator shall use a particle arrestor filter to capture and control the particulate
emissions from the painting activity. [R307-401-8]

II.B.5.c The owner/operator shall install a particle arrestor filter that has a certified control efficiency of 95% or higher. [R307-401-8]
II.B.5.c.1 The owner/operator shall keep a record of the manufacturer's certification of the control
efficiency. The record shall be kept for the life of the equipment. [R307-401-8]

DAQE-AN157040003-25
Page 9

PERMIT HISTORY

This Approval Order shall supersede (if a modification) or will be based on the following documents: Supersedes AO DAQE-AN157040002-22 dated March 31, 2022 Incorporates NOI dated January 30, 2024 Incorporates Additional information dated April 4, 2024 Incorporates Additional information dated April 11, 2024 Incorporates Additional information dated June 7, 2024 Incorporates Additional information dated October 30, 2024

DAQE-AN157040003-25
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-IN157040003-24

December 5, 2024

Randy Means
Swanson Industries, Inc.
610 Industrial Road
Helper, UT 84526
[e-mail]

Dear Randy Means:

Re: Intent to Approve: Modification to Approval Order DAQE-AN157040002-22 to Revise the
Baghouse Pressure Drop Range and Add Solvent Parts Washers and a Cleaner
Project Number: N157040003

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

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

Sincerely,

{{$s }}

Alan D. Humpherys, Manager
New Source Review Section

ADH:EH:jg

cc: Southeastern Utah District 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

STATE OF UTAH
Department of Environmental Quality
Division of Air Quality

INTENT TO APPROVE
DAQE-IN157040003-24
Modification to Approval Order DAQE-AN157040002-22 to Revise
the Baghouse Pressure Drop Range and Add
Solvent Parts Washers and a Cleaner

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

Issued to
Swanson Industries, Inc. - Mining Equipment Restoration

Issued On
December 5, 2024

{{$s }}

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

TABLE OF CONTENTS

TITLE/SIGNATURE PAGE ....................................................................................................... 1
GENERAL INFORMATION ...................................................................................................... 3
CONTACT/LOCATION INFORMATION ............................................................................... 3
SOURCE INFORMATION ........................................................................................................ 3
General Description ................................................................................................................ 3
NSR Classification .................................................................................................................. 3
Source Classification .............................................................................................................. 3
Applicable Federal Standards ................................................................................................. 3
Project Description.................................................................................................................. 3
SUMMARY OF EMISSIONS .................................................................................................... 4
PUBLIC NOTICE STATEMENT............................................................................................... 4
SECTION I: GENERAL PROVISIONS .................................................................................... 5
SECTION II: PERMITTED EQUIPMENT .............................................................................. 6
SECTION II: SPECIAL PROVISIONS ..................................................................................... 6
PERMIT HISTORY ..................................................................................................................... 9
ACRONYMS ............................................................................................................................... 10

DAQE-IN157040003-24
Page 3

GENERAL INFORMATION

CONTACT/LOCATION INFORMATION

Owner Name Source Name
Swanson Industries, Inc. Swanson Industries, Inc. - Mining Equipment Restoration

Mailing Address Physical Address
610 Industrial Road 610 Industrial Road
Helper, UT 84526 Helper, UT 84526

Source Contact UTM Coordinates
Name: Randy Means 512,029 m Easting
Phone: [phone],392,111 m Northing
Email: [e-mail] Datum NAD83
UTM Zone 12
SIC code 3053 (Gaskets, Packing, & Sealing Devices)

SOURCE INFORMATION
General Description
Swanson Industries, Inc. (Swanson) operates a mining equipment repair and maintenance facility located
in Helper, Carbon County. The repair and maintenance operations are conducted in two (2) shop
buildings: the rebuild shop and the jack shop. The activities taking place are abrasive blasting and
grinding; parts cleaning, painting, and coating; fuel combustion; and welding and cutting, including a
laser cladding process. Natural gas is used to operate space and water heaters for the facility.
NSR Classification
Minor Modification at Minor Source

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

Applicable Federal Standards
MACT (Part 63), A: General Provisions
MACT (Part 63), XXXXXX: National Emission Standards for Hazardous Air Pollutants Area
Source Standards for Nine Metal Fabrication and Finishing Source Categories

Project Description
Swanson has requested to revise the pressure drop range from between 3 and 8 inches of water column to
between 0.5 and 6 inches of water column. The change in pressure drop range is not expected to affect
emissions from the baghouse.
DAQE-IN157040003-24
Page 4

The source has also requested to add six (6) solvent parts washers. The parts washers are rated at 15, 25,
and 32 gallons, two (2) each.

In addition to the modification mentioned above, the source has also requested to add a small ultrasonic
cleaner. The cleaner is conservatively estimated to use one (1) gallon of non-HAP VOC-containing acid.

VOC and HAP emission increases from the parts washers and the ultrasonic cleaner are estimated, and
the site-wide PTEs are updated.

SUMMARY OF EMISSIONS

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

Criteria Pollutant Change (TPY) Total (TPY)
CO2 Equivalent 0 687.00
Carbon Monoxide 0 0.71
Nitrogen Oxides 0 1.74
Particulate Matter - PM10 0 4.72
Particulate Matter - PM2.5 0 0.72
Sulfur Dioxide 0 0.08
Volatile Organic Compounds 2.02 6.82

Hazardous Air Pollutant Change (lbs/yr) Total (lbs/yr)
Benzene (Including Benzene From Gasoline) (CAS #71432) 1660
Chromium Compounds (CAS #CMJ500) 10 40
Cumene (CAS #98828) 3960
Ethyl Benzene (CAS #100414) 3960
Manganese (TSP) (CAS #7439965) 0 40
Naphthalene (CAS #91203) 3960
Nickel (CAS #7440020) 2 40
Toluene (CAS #108883) 3960 4240
Xylenes (Isomers And Mixture) (CAS #1330207) 3960 10260
Change (TPY) Total (TPY)
Total HAPs 1.98 5.32

*The source chooses to limit total HAP emission increases by 1.98 tpy and total HAP emissions at
5.32 tpy.

PUBLIC NOTICE STATEMENT

The NOI for the above-referenced project has been evaluated and has been found to be consistent with the requirements of UAC R307. Air pollution producing sources and/or their air control facilities may not be constructed, installed, established, or modified prior to the issuance of an AO by the Director. A 30-day public comment period will be held in accordance with UAC R307-401-7. A notification of the intent to approve will be published in the Emery County Progress on December 11, 2024. During the
DAQE-IN157040003-24
Page 5
public comment period the proposal and the evaluation of its impact on air quality will be available for
the public to review and provide comment. If anyone so requests a public hearing within 15 days of publication, it will be held in accordance with UAC R307-401-7. The hearing will be held as close as practicable to the location of the source. Any comments received during the public comment period and
the hearing will be evaluated. The proposed conditions of the AO may be changed as a result of the comments received.

SECTION I: GENERAL PROVISIONS

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

I.1 All definitions, terms, abbreviations, and references used in this AO conform to those used in the UAC R307 and 40 CFR. Unless noted otherwise, references cited in these AO conditions refer to those rules. [R307-101] I.2 The limits set forth in this AO shall not be exceeded without prior approval. [R307-401]
I.3 Modifications to the equipment or processes approved by this AO that could affect the emissions covered by this AO must be reviewed and approved. [R307-401-1] I.4 All records referenced in this AO or in other applicable rules, which are required to be kept by the owner/operator, shall be made available to the Director or Director's representative upon request, and the records shall include the two-year period prior to the date of the request. Unless otherwise specified in this AO or in other applicable state and federal rules, records shall be kept for a minimum of two (2) years. [R307-401-8]
I.5 At all times, including periods of startup, shutdown, and malfunction, owners and operators shall, to the extent practicable, maintain and operate any equipment approved under this AO, including associated air pollution control equipment, in a manner consistent with good air pollution control practice for minimizing emissions. Determination of whether acceptable operating and maintenance procedures are being used will be based on information available to the Director which may include, but is not limited to, monitoring results, opacity observations, review of operating and maintenance procedures, and inspection of the source. All maintenance performed on equipment authorized by this AO shall be recorded. [R307-401-4] I.6 The owner/operator shall comply with UAC R307-107. General Requirements: Breakdowns. [R307-107]
I.7 The owner/operator shall comply with UAC R307-150 Series. Emission Inventories. [R307-150] I.8 The owner/operator shall submit documentation of the status of construction or modification to the Director within 18 months from the date of this AO. This AO may become invalid if construction is not commenced within 18 months from the date of this AO or if construction is
discontinued for 18 months or more. To ensure proper credit when notifying the Director, send the documentation to the Director, attn.: NSR Section. [R307-401-18]

DAQE-IN157040003-24
Page 6

SECTION II: PERMITTED EQUIPMENT

The intent is to issue an air quality AO authorizing the project with the following recommended
conditions and that failure to comply with any of the conditions may constitute a violation of the AO.
II.A THE APPROVED EQUIPMENT II.A.1 Swanson Industries Coal Mining Equipment Repair and Maintenance
II.A.2 Outdoor Abrasive Blasting Process II.A.3 Spray Booths Two (2) Paint Booths Control: Particulate Filters
II.A.4 Electric Arc Welders Control: Baghouse II.A.5 Laser Cladding Device Control: Baghouse
II.A.6 Various Heaters and Boilers Rating: <5 MMBtu/hr each Fuel: Natural Gas Included for information purposes only II.A.7 Parts Washers - new equipment Six (6) parts washers Two (2) with 15-gallon capacity each Two (2) with 25-gallon capacity each Two (2) with 32-gallon capacity each
II.A.8 Ultrasonic Cleaner - new equipment

SECTION II: SPECIAL PROVISIONS

The intent is to issue an air quality AO authorizing the project with the following recommended
conditions and that failure to comply with any of the conditions may constitute a violation of the AO. II.B REQUIREMENTS AND LIMITATIONS
II.B.1 Plantwide Requirements II.B.1.a Unless otherwise specified in this AO, the owner/operator shall not allow visible emissions from the mining equipment repair and maintenance shop to exceed 20% opacity. [R307-401-8]
II.B.1.a.1 Unless otherwise specified in this AO, opacity observations of emissions from stationary sources shall be conducted according to 40 CFR 60, Appendix A, Method 9. [R307-401-8]

DAQE-IN157040003-24
Page 7

II.B.2 VOC & HAP Requirements II.B.2.a The owner/operator shall not emit more than the following from evaporative sources (painting,
printing, coating, and/or cleaning) on site: 6.82 tons per rolling 12-month period of VOCs
2.12 tons per rolling 12-month period of toluene 5.13 tons per rolling 12-month period of xylene 0.83 tons per rolling 12-month period of benzene
1.98 tons per rolling 12-month period of ethyl benzene 1.98 tons per rolling 12-month period of naphthalene 1.98 tons per rolling 12-month period of cumene
5.32 tons per rolling 12-month period of all HAPs combined. [R307-401-8]

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

II.B.2.a.3 The owner/operator shall keep records each month of the following: A. The name (as per SDS) of the VOC- and HAP-emitting material B. The maximum percent by weight of VOCs and each HAP in each material used C. The density of each material used D. The volume of each VOC- and HAP-emitting material used E. The amount of VOCs and the amount of each HAP emitted from each material F. The amount of VOCs and the amount of each HAP reclaimed and/or controlled from each material G. The total amount of VOCs, the total amount of each HAP, and the total amount of all HAPs combined emitted from all materials (in tons). [R307-401-8]
II.B.2.b The owner/operator shall keep the parts washers and the ultrasonic cleaner closed when not in
use. [R307-401-8]

II.B.3 Outdoor Abrasive Blasting Process Requirements
II.B.3.a The owner/operator shall comply with all applicable requirements of R307-206, Emission
Standards: Abrasive Blasting. [R307-206]

DAQE-IN157040003-24
Page 8

II.B.3.b The owner/operator shall not exceed 40% opacity from the outdoor abrasive blasting process, except for an aggregate period of three (3) minutes in any one (1) hour. [R307-206-4] II.B.3.c The owner/operator shall not use more than 342 tons of abrasive blasting medium per rolling 12-month period in the abrasive blasting process. [R307-401-8]

II.B.3.c.1 The owner/operator shall: A. Determine the amount of abrasive blast medium used in the abrasive blasting booth with process scales and inventory records B. Record abrasive blast medium utilized in the abrasive blasting booth on a monthly basis C. Use the abrasive blast medium used in the abrasive blasting booth data to calculate a new 12-month total by the 20th day of each month using data from the previous 12 months D. Keep the records of abrasive blast medium used in the abrasive blasting booth for all periods the plant is in operation. [R307-401-8]
II.B.4 Welding and Cladding Device Requirements
II.B.4.a The owner/operator shall control emissions from arc welding activities and laser cladding devices with a baghouse. [R307-401-8]
II.B.4.b The owner/operator shall install a manometer or magnehelic pressure gauges to measure the static pressure differential across the baghouse. [R307-401-8]

II.B.4.c The owner/operator shall maintain the static pressure differential of the baghouse between 0.5 and 6 inches of water column as measured on the pressure gauge. [R307-401-8]
II.B.4.c.1 The pressure gauge shall measure the static pressure differential in one-inch water column
increments or less. [R307-401-8]
II.B.4.c.2 The owner/operator shall maintain the following records of the static pressure differentials. A. Unit identification B. Daily static pressure differential readings C. Date of reading. [R307-401-8]
II.B.4.d At least once every 12 months, the owner/operator shall calibrate the baghouse pressure gauge in
accordance with the manufacturer's instructions or replace the pressure gauge. [R307-401-8]

II.B.4.d.1 The owner/operator shall maintain records of the pressure gauge calibrations and replacements. [R307-401-8]
II.B.5 Paint Booth Requirements
II.B.5.a The owner/operator shall not allow visible emissions from the paint booth to exceed 10% opacity. [R307-401-8]
II.B.5.b The owner/operator shall use a particle arrestor filter to capture and control the particulate
emissions from the painting activity. [R307-401-8]

DAQE-IN157040003-24
Page 9

II.B.5.c The owner/operator shall install a particle arrestor filter that has a certified control efficiency of 95% or higher. [R307-401-8] II.B.5.c.1 The owner/operator shall keep a record of the manufacturer's certification of the control efficiency. The record shall be kept for the life of the equipment. [R307-401-8]

PERMIT HISTORY

This Approval Order shall supersede (if a modification) or will be based on the following documents:
Supersedes AO DAQE-AN157040002-22 dated March 31, 2022 Incorporates NOI dated January 31, 2024 Incorporates Additional information dated April 4, 2024 Incorporates Additional information dated April 11, 2024 Incorporates Additional information dated June 7, 2024 Incorporates Additional information dated October 30, 2024
DAQE-IN157040003-24
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

Emery Telcom
Publication Name:
Emery Telcom
Publication URL:
www.etv10news.com
Publication City and State:
Price, UT
Publication County:
Carbon
Notice Popular Keyword Category:
Notice Keywords:
Swanson Industries Inc.
Notice Authentication Number:
202412111509237134497
1761527881
Notice URL:
Back
Notice Publish Date:
Wednesday, December 11, 2024
Notice Content
NOTICE
A Notice of Intent for the following project submitted in accordance with R307-401-1, Utah Administrative Code (UAC), has been received for
consideration by the Director:
Company Name: Swanson Industries, Inc.
Location: Swanson Industries, Inc.- Mining Equipment Restoration – 610 Industrial Road, Helper, UT
Project Description: Swanson Industries, Inc. (Swanson) operates a mining equipment repair and maintenance facility located in Helper,
Carbon County. The repair and maintenance operations include abrasive blasting and grinding, painting and coating, fuel combustion,
welding, and cutting, including a laser cladding process. Swanson has requested to revise the pressure drop range from between 3 and 8
inches of water column to between 0.5 and 6 inches of water column. The change in pressure drop range will not affect emissions from the
baghouse. The company has also requested to add six (6) solvent parts washers and an ultrasonic cleaner. VOC and HAP emission increases
from the parts washers and the ultrasonic cleaner are estimated and included in the site-wide emissions.
The completed engineering evaluation and air quality impact analysis showed the proposed project meets the requirements of federal air
quality regulations and the State air quality rules. The Director intends to issue an Approval Order pending a 30-day public comment period.
The project proposal, estimate of the effect on local air quality and draft Approval Order are available for public inspection and comment at
the Utah Division of Air Quality, 195 North 1950 West, Salt Lake City, UT 84116. Written comments received by the Division at this same
address on or before January 10, 2025, will be considered in making the final decision on the approval/disapproval of the proposed project.
Email comments will also be accepted at [e-mail]. If anyone so requests to the Director in writing within 15 days of publication of this
notice, a hearing will be held in accordance with R307-401-7, UAC.
Under Section 19-1-301.5, a person who wishes to challenge a Permit Order may only raise an issue or argument during an adjudicatory
proceeding that was raised during the public comment period and was supported with sufficient information or documentation to enable the
Director to fully consider the substance and significance of the issue.
Published in the ETV Newspaper December 11, 2024.
Back

DAQE-NN157040003-24

December 5, 2024

Emery County Progress
625 East 100 North
Price, UT 8450
Acct # 36868001

RE: Legal Notice of Intent to Approve

This letter will confirm the authorization to publish the attached NOTICE in the Emery County Progress
on December 11, 2024.

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

Sincerely,

{{$s }}

Jeree Greenwood
Office Technician

Enclosure

cc: Carbon County
cc: Southeastern Association of Governments

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

SPENCER J. COX
Governor
DEIDRE HENDERSON
Lieutenant Governor

Department of
Environmental Quality

Kimberly D. Shelley
Executive Director

DIVISION OF AIR QUALITY
Bryce C. Bird
Director

DAQE-NN157040003-24
Page 2
NOTICE

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

Company Name: Swanson Industries, Inc.
Location: Swanson Industries, Inc.- Mining Equipment Restoration – 610 Industrial Road,
Helper, UT
Project Description: Swanson Industries, Inc. (Swanson) operates a mining equipment repair and
maintenance facility located in Helper, Carbon County. The repair and
maintenance operations include abrasive blasting and grinding, painting and
coating, fuel combustion, welding, and cutting, including a laser cladding
process. Swanson has requested to revise the pressure drop range from between 3
and 8 inches of water column to between 0.5 and 6 inches of water column. The
change in pressure drop range will not affect emissions from the baghouse. The
company has also requested to add six (6) solvent parts washers and an ultrasonic
cleaner. VOC and HAP emission increases from the parts washers and the
ultrasonic cleaner are estimated and included in the site-wide emissions.

The completed engineering evaluation and air quality impact analysis showed the proposed project meets
the requirements of federal air quality regulations and the State air quality rules. The Director intends to
issue an Approval Order pending a 30-day public comment period. The project proposal, estimate of the
effect on local air quality and draft Approval Order are available for public inspection and comment at the
Utah Division of Air Quality, 195 North 1950 West, Salt Lake City, UT 84116. Written comments
received by the Division at this same address on or before January 10, 2025, will be considered in making
the final decision on the approval/disapproval of the proposed project. Email comments will also be
accepted at [e-mail]. If anyone so requests to the Director in writing within 15 days of publication
of this notice, a hearing will be held in accordance with R307-401-7, UAC.

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

Date of Notice: December 11, 2024

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

DAQE-

RN157040003 November 18, 2024 Randy Means
Swanson Industries, Inc. 610 Industrial Road Helper, UT 84526
[e-mail] Dear Randy Means,
Re: Engineer Review: Modification to Approval Order DAQE-AN157040002-22 to Revise the Baghouse Pressure Drop Range and Add Solvent Parts Washers and a Cleaner Project Number: N157040003 The DAQ requests a company representative review and sign the attached Engineer Review (ER). This ER identifies all applicable elements of the New Source Review permitting program. Swanson Industries, Inc. should complete this review within 10 business days of receipt. Swanson Industries, Inc. should contact Mr. Enqiang He at [phone] if there are questions or
concerns with the review of the draft permit conditions. Upon resolution of your concerns, please email Mr. Enqiang He at [e-mail] the signed cover letter. Upon receipt of the signed cover letter, the DAQ will prepare an ITA for a 30-day public comment period. At the completion of the comment period, the DAQ will address any comments and will prepare an Approval Order (AO) for signature by the DAQ Director.
If Swanson Industries, Inc. does not respond to this letter within 10 business days, the project will move forward without source concurrence. If Swanson Industries, Inc. has concerns that cannot be resolved and the project becomes stagnant, the DAQ Director may issue an Order prohibiting construction. Approval Signature _____________________________________________________________ (Signature & Date)
195 North 1950 West • Salt Lake City, UT
Mailing Address: P.O. Box 144820 • Salt Lake City, UT 84114-4820
Telephone [phone] • Fax [phone] • T.D.D. [phone]
www.deq.utah.gov
Printed on 100% recycled paper
Department of Environmental Quality
Kimberly D. Shelley Executive Director DIVISION OF AIR QUALITY Bryce C. Bird Director
State of Utah
SPENCER J. COX Governor DEIDRE HENDERSON Lieutenant Governor

Engineer Review N157040003: Swanson Industries, Inc.- Mining Equipment Restoration November 18, 2024 Page 1
UTAH DIVISION OF AIR QUALITY
ENGINEER REVIEW

SOURCE INFORMATION
Project Number N157040003 Owner Name Swanson Industries, Inc. Mailing Address 610 Industrial Road
Helper, UT 84526 Source Name Swanson Industries, Inc.- Mining Equipment Restoration
Source Location 610 Industrial Road Helper, UT 84526
UTM Projection 512,029 m Easting, 4,392,111 m Northing UTM Datum NAD83 UTM Zone UTM Zone 12 SIC Code 3053 (Gaskets, Packing, & Sealing Devices) Source Contact Randy Means Phone Number [phone] Email [e-mail] Billing Contact Randy Means Phone Number [phone]
Email [e-mail] Project Engineer Mr. Enqiang He, Engineer
Phone Number [phone] Email [e-mail]
Notice of Intent (NOI) Submitted January 30, 2024 Date of Accepted Application October 31, 2024

Engineer Review N157040003: Swanson Industries, Inc.- Mining Equipment Restoration November 18, 2024 Page 2
SOURCE DESCRIPTION General Description
Swanson Industries (Swanson) operates a mining equipment repair and maintenance facility located in Helper, Carbon County. The repair and maintenance operations are conducted in two shop buildings: the rebuild shop and the jack shop. The activities taking place are abrasive
blasting and grinding; parts cleaning, painting and coating; fuel combustion; and welding and cutting including a laser cladding process. Natural gas is used to operate space and water heaters for the facility. NSR Classification: Minor Modification at Minor Source Source Classification Located in Attainment Area Carbon County Airs Source Size: B
Applicable Federal Standards MACT (Part 63), A: General Provisions
MACT (Part 63), XXXXXX: National Emission Standards for Hazardous Air Pollutants Area Source Standards for Nine Metal Fabrication and Finishing Source Categories
Project Proposal Modification to Approval Order DAQE-AN157040002-22 to Revise the Baghouse Pressure Drop Range and Add Solvent Parts Washers and a Cleaner Project Description Swanson has requested to revise the pressure drop range from between 3 and 8 inches of water
column to between 0.5 and 6 inches of water column. The change in pressure drop range is not expected to affect emissions from the baghouse. The source has also requested to add six (6) solvent parts washers. The parts washers are rated at 15, 25, and 32 gallons, two (2) each. In addition to the modification mentioned above, the source has also requested to add a small ultrasonic cleaner. The cleaner is conservatively estimated to use one (1) gallon of non-HAP
VOC containing acid. VOC and HAP emission increases from the parts washers and the ultrasonic cleaner are estimated
and the site-wide PTEs are updated. EMISSION IMPACT ANALYSIS
All criteria pollutant emission increases are below the modeling thresholds contained in R307-410-4; all HAP emission increases are below their respective emission threshold values in R307-410-5. Therefore, no modeling is required from this source for this modification. [Last updated April 3, 2024]

Engineer Review N157040003: Swanson Industries, Inc.- Mining Equipment Restoration November 18, 2024 Page 3
SUMMARY OF EMISSIONS
The emissions listed below are an estimate of the total potential emissions from the source. Some rounding of emissions is possible.
Criteria Pollutant Change (TPY) Total (TPY) CO2 Equivalent 0 687.00 Carbon Monoxide 0 0.71
Nitrogen Oxides 0 1.74
Particulate Matter - PM10 0 4.72
Particulate Matter - PM2.5 0 0.72
Sulfur Dioxide 0 0.08
Volatile Organic Compounds 2.02 6.82 Hazardous Air Pollutant Change (lbs/yr) Total (lbs/yr)
Benzene (Including Benzene From Gasoline) (CAS #71432) 1660
Chromium Compounds (CAS #CMJ500) 10 40
Cumene (CAS #98828) 3960
Ethyl Benzene (CAS #100414) 3960
Manganese (TSP) (CAS #7439965) 0 40 Naphthalene (CAS #91203) 3960 Nickel (CAS #7440020) 2 40
Toluene (CAS #108883) 3960 4240
Xylenes (Isomers And Mixture) (CAS #1330207) 3960 10260
Change (TPY) Total (TPY)
Total HAPs* 1.98 5.32 Note: Change in emissions indicates the difference between previous AO and proposed modification. *The source chooses to limit total HAP emission increases by 1.98 tpy and total HAP emissions at 5.32 tpy.

Engineer Review N157040003: Swanson Industries, Inc.- Mining Equipment Restoration November 18, 2024 Page 4
Review of BACT for New/Modified Emission Units 1. BACT review regarding the parts washers and the ultrasonic cleaner
The parts washers Swanson uses cleaning solvent with a low vapor pressure at 0.5 mm Hg at room temperatures. The parts washers are equipped with rigid tight-fitting lids. The washers shall be closed with the lids
when not in use. The Minor NSR Section considers these measures above as BACT. The ultrasonic cleaner VOC emissions from the cleaner are calculated at 0.04 tpy. It would be economically infeasible to control such small emissions using any add-on controls. Swanson shall keep the cleaner closed
when not in use. The Minor NSR Section considers the measure as BACT. [Last updated April 25, 2024]
SECTION I: GENERAL PROVISIONS
The intent is to issue an air quality AO authorizing the project with the following recommended conditions and that failure to comply with any of the conditions may constitute a violation of the AO. (New or Modified conditions are indicated as “New” in the Outline Label):

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

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

Engineer Review N157040003: Swanson Industries, Inc.- Mining Equipment Restoration November 18, 2024 Page 5
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]
I.8 The owner/operator shall submit documentation of the status of construction or modification to the Director within 18 months from the date of this AO. This AO may become invalid if construction is not commenced within 18 months from the date of this AO or if construction is
discontinued for 18 months or more. To ensure proper credit when notifying the Director, send the documentation to the Director, attn.: NSR Section. [R307-401-18]

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 Swanson Industries Coal Mining Equipment Repair and Maintenance
II.A.2 Outdoor Abrasive Blasting Process II.A.3 Spray Booths Two (2) Paint Booths Control: Particulate Filters II.A.4 Electric Arc Welders Control: Baghouse
II.A.5 Laser Cladding Device
Control: Baghouse II.A.6 Various Heaters and Boilers Rating: <5 MMBtu/hr each
Fuel: Natural Gas Included for information purposes only
II.A.7 NEW Parts Washers - new equipment Six (6) parts washers Two (2) with 15 gallon capacity each Two (2) with 25 gallon capacity each Two (2) with 32 gallon capacity each
II.A.8 NEW Ultrasonic Cleaner - new equipment

Engineer Review N157040003: Swanson Industries, Inc.- Mining Equipment Restoration November 18, 2024 Page 6

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 Plantwide Requirements
II.B.1.a Unless otherwise specified in this AO, the owner/operator shall not allow visible emissions from the mining equipment repair and maintenance shop to exceed 20% opacity. [R307-401-8]
II.B.1.a.1 Unless otherwise specified in this AO, opacity observations of emissions from stationary sources shall be conducted according to 40 CFR 60, Appendix A, Method 9. [R307-401-8]
II.B.2 VOC & HAP Requirements II.B.2.a NEW The owner/operator shall not emit more than the following from evaporative sources (painting, printing, coating, and/or cleaning) on site:
6.82 tons per rolling 12-month period of VOCs
2.12 tons per rolling 12-month period of toluene 5.13 tons per rolling 12-month period of xylene 0.83 tons per rolling 12-month period of benzene
1.98 tons per rolling 12-month period of ethyl benzene 1.98 tons per rolling 12-month period of naphthalene 1.98 tons per rolling 12-month period of cumene
5.32 tons per rolling 12-month period of all HAPs combined. [R307-401-8]
II.B.2.a.1 The owner/operator shall calculate a new 12-month total by the 20th day of each month using data from the previous 12 months. The owner/operator shall use a mass-balance method to calculate emissions from evaporative sources. The owner/operator may use the following
equations with applicable units to comply with the mass-balance method: VOCs = [% VOCs by Weight/100] x [Density] x [Volume Consumed]
HAP = [% HAP by Weight/100] x [Density] x [Volume Consumed].
[R307-401-8]
II.B.2.a.2 The owner/operator shall use a mass-balance method to quantify any amount of VOCs and
HAPs reclaimed. The owner/operator shall subtract the amount of VOCs and HAPs reclaimed from the quantities calculated above to provide the monthly total emissions of VOCs and HAPs. [R307-401-8]

Engineer Review N157040003: Swanson Industries, Inc.- Mining Equipment Restoration November 18, 2024 Page 7
II.B.2.a.3 The owner/operator shall keep records each month of the following:
A. The name (as per SDS) of the VOC- and HAP-emitting material
B. The maximum percent by weight of VOCs and each HAP in each material used C. The density of each material used D. The volume of each VOC- and HAP-emitting material used E. The amount of VOCs and the amount of each HAP emitted from each material F. The amount of VOCs and the amount of each HAP reclaimed and/or controlled from
each material G. The total amount of VOCs, the total amount of each HAP, and the total amount of all
HAPs combined emitted from all materials (in tons). [R307-401-8]
II.B.2.b NEW The owner/operator shall keep the parts washers and the ultrasonic cleaner closed when not in use. [R307-401-8]
II.B.3 Outdoor Abrasive Blasting Process Requirements II.B.3.a The owner/operator shall comply with all applicable requirements of R307- 206, Emission Standards: Abrasive Blasting. [R307-206]

II.B.3.b The owner/operator shall not exceed 40% opacity from the outdoor abrasive blasting process,
except for an aggregate period of three (3) minutes in any one (1) hour. [R307-206-4] II.B.3.c The owner/operator shall not use more than 342 tons of abrasive blasting medium per rolling 12-month period in the abrasive blasting process. [R307-401-8]

II.B.3.c.1 NEW The owner/operator shall:
A. Determine the amount of abrasive blast medium used in the abrasive blasting booth
with process scales and inventory records B. Record abrasive blast medium utilized in the abrasive blasting booth on a monthly
basis C. Use the abrasive blast medium used in the abrasive blasting booth data to calculate a
new 12-month total by the 20th day of each month using data from the previous 12
months
D. Keep the records of abrasive blast medium used in the abrasive blasting booth for all
periods the plant is in operation. [R307-401-8]

Engineer Review N157040003: Swanson Industries, Inc.- Mining Equipment Restoration November 18, 2024 Page 8
II.B.4 Welding and Cladding Device Requirements
II.B.4.a The owner/operator shall control emissions from arc welding activities and laser cladding devices with a baghouse. [R307-401-8] II.B.4.b NEW The owner/operator shall install a manometer or magnehelic pressure gauges to measure the static pressure differential across the baghouse. [R307-401-8]

II.B.4.c NEW The owner/operator shall maintain the static pressure differential of the baghouse between 0.5 and 6 inches of water column as measured on the pressure gauge. [R307-401-8]
II.B.4.c.1 NEW The pressure gauge shall measure the static pressure differential in one-inch water column increments or less. [R307-401-8]

II.B.4.c.2 The owner/operator shall maintain the following records of the static pressure differentials.
A. Unit identification
B. Daily static pressure differential readings
C. Date of reading. [R307-401-8]
II.B.4.d NEW At least once every 12 months, the owner/operator shall calibrate the baghouse pressure gauge in accordance with the manufacturer's instructions or replace the pressure gauge. [R307-401-
8] II.B.4.d.1 NEW The owner/operator shall maintain records of the pressure gauge calibrations and replacements. [R307-401-8]

II.B.5 NEW Paint Booth Requirements
II.B.5.a NEW The owner/operator shall not allow visible emissions from the paint booth to exceed 10% opacity. [R307-401-8]
II.B.5.b
NEW
The owner/operator shall use a particle arrestor filter to capture and control the particulate
emissions from the painting activity. [R307-401-8] II.B.5.c NEW The owner/operator shall install a particle arrestor filter that has a certified control efficiency of 95% or higher. [R307-401-8]
II.B.5.c.1
NEW
The owner/operator shall keep a record of the manufacturer's certification of the control
efficiency. The record shall be kept for the life of the equipment. [R307-401-8]

Engineer Review N157040003: Swanson Industries, Inc.- Mining Equipment Restoration November 18, 2024 Page 9
PERMIT HISTORY When issued, the approval order shall supersede (if a modification) or will be based on the
following documents: Supersedes AO DAQE-AN157040002-22 dated March 31, 2022
Incorporates NOI dated January 31, 2024 Incorporates Additional information dated April 4, 2024 Incorporates Additional information dated April 11, 2024 Incorporates Additional information dated June 7, 2024 Incorporates Additional information dated October 30, 2024
REVIEWER COMMENTS
1. Comment regarding Emission Estimates: The source will use mass balance methods to calculate its VOC and HAP emissions from the parts washers and the ultrasonic cleaners. Considering its future demand for parts cleaning, the source proposes to limit its VOC emissions at 2.02 tpy and 1.98 tpy for each of the HAPs including benzene, ethylbenzene, naphthalene, toluene, and cumene for all six (6) parts washers and one (1) ultrasonic cleaner proposed. The total HAP emissions are also limited to 1.98 tpy. These emissions are added to the previously permitted totals. [Last updated November 18, 2024]
2. Comment regarding NSPS/ MACT Standards: 40 CFR 63 (MACT) 40 CFR 63 Subpart MMMM applies to facilities that are used for surface coating of miscellaneous
metal parts and products that use 250 gallons of coatings per year that is located at a major source. This facility is not a major source; therefore, MACT Subpart MMMM does not apply to this facility. 40 CFR 63 Subpart HHHHHH applies to facilities that conduct paint stripping with methylene chloride; conduct auto body refinishing operations; or spray coatings containing chromium, lead,
manganese, nickel, or cadmium to metal and/or plastic parts. This facility does not conduct paint stripping or auto body refinishing. The facility does apply spray coatings to metal parts, but the coatings do not contain chromium, lead, manganese, nickel, or cadmium; therefore, MACT Subpart
HHHHHH does not apply to this facility.
40 CFR 63 Subpart XXXXXX applies to dry abrasive blasting, machining, dry grinding and dry polishing with machines, spray painting, and welding that contain or have the potential to emit cadmium, chromium, lead, or nickel in amounts greater than or equal to 0.1 percent by weight (of the metal), and manganese in amounts greater than or equal to 1.0 percent by weight (of the metal). This facility conducts the above activities and has the potential to emit the listed HAPs greater than concentrations listed; therefore, MACT Subpart XXXXXX applies to this facility.
[Last updated April 3, 2024] 3. Comment regarding Title V Requirements:
Title V of the 1990 Clean Air Act (Title V) applies to the following:
1. Any major source 2. Any source subject to a standard, limitation, or other requirement under Section 111 of the Act, Standards of Performance for New Stationary Sources; 3. Any source subject to a standard or other requirement under Section 112 of the Act, Hazardous Air Pollutants.

Engineer Review N157040003: Swanson Industries, Inc.- Mining Equipment Restoration November 18, 2024 Page 10
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 60 (NSPS) or 40 CFR 61 (NESHAP) regulations. This facility is subject to 40 CFR 63 (MACT) Subpart XXXXXX regulations. However, Title V does not apply because MACT Subpart XXXXXX exempts 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. There are no other reasons why this
source would be required to obtain a part 70 permit; therefore, Title V does not apply to this facility as per R307-415-4(2)(c). [Last updated April 3, 2024]

Engineer Review N157040003: Swanson Industries, Inc.- Mining Equipment Restoration November 18, 2024 Page 11
ACRONYMS The following lists commonly used acronyms and associated translations as they apply to this document:
40 CFR Title 40 of the Code of Federal Regulations AO Approval Order BACT Best Available Control Technology
CAA Clean Air Act CAAA Clean Air Act Amendments CDS Classification Data System (used by 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
4/4/24, 11:40 AM State of Utah Mail - Swanson Industries N157040003
https://mail.google.com/mail/u/1/?ik=20ff41d2e4&view=pt&search=all&permthid=thread-a:r-6507464487336242200&simpl=msg-a:r-18639846083443…1/2
Enqiang He <[e-mail]>
Swanson Industries N157040003
4 messages
Enqiang He <[e-mail]>Tue, Apr 2, 2024 at 4:35 PM
To: [e-mail]
Hello Celia,
I am reviewing the NOI submitted for Swanson Industries earlier this year. I have a
question regarding the pressure drop range for the baghouse. Is there any certificate or
any communication from the baghouse manufacturer or the baghouse installer that
certifies the baghouse can operate properly at a range between 0 and 4 inches of water
column?
Please advise ASAP. Thanks,
EQ He, CPM
Permitting Engineer, Minor NSR Section, Permitting Branch |
Division of Air Quality
1950 West 195 North, Salt Lake City, UT 84116
Phone: [phone]
[e-mail]
Celia Raymond <[e-mail]>Wed, Apr 3, 2024 at 6:38 AM
To: Enqiang He <[e-mail]>
Good morning, EQ,

I have requested this information from the site and will circle back as soon as I receive it. Please let me
know if you have any additional questions in the meantime!

Celia Raymond, P.E.
(ME,MA,CT)
(she/her)
Phone: [phone]
Email: [e-mail]
4/4/24, 11:40 AM State of Utah Mail - Swanson Industries N157040003
https://mail.google.com/mail/u/1/?ik=20ff41d2e4&view=pt&search=all&permthid=thread-a:r-6507464487336242200&simpl=msg-a:r-18639846083443…2/2
PO Box 843, Portland, Maine 04104
[Quoted text hidden]
Enqiang He <[e-mail]>Wed, Apr 3, 2024 at 11:46 AM
To: Celia Raymond <[e-mail]>
Hi Celia,
Thanks for getting back to me.
I do have another question for you. As far as the BACT analysis for the parts washers
and ultrasonic cleaner, could the carbon filter provide the best control for the VOC and
HAPs? The source could vent the evaporative VOC/HAP streams to a carbon filter
when the units are in use. Please let me know if the carbon filters could be the BACT
for the parts washers and the cleaner. Thanks,
EQ He, CPM
Permitting Engineer, Minor NSR Section, Permitting Branch |
Division of Air Quality
1950 West 195 North, Salt Lake City, UT 84116
Phone: [phone]
[e-mail]
[Quoted text hidden]
Celia Raymond <[e-mail]>Thu, Apr 4, 2024 at 6:37 AM
To: Enqiang He <[e-mail]>
Good morning, EQ,

A carbon filter is not technically feasible the parts washers because when in use, there is no way to collect
exhaust from the solvent evaporation while the technician is using the parts washer. I can send a picture of
the parts washer in use, if you haven’t seen one before.

For the ultrasonic cleaner, there is no exhaust point on which a carbon filter could be installed. Further, the
VOC emissions from the ultrasonic cleaner are so minimal, they don’t justify controls.

Please let me know if you need anything further!
[Quoted text hidden]

PERMIT MODIFICATION APPLICATION
UPDATED FROM JANUARY 2024 SUBMITTAL
Permit Number DAQE-IN157040002-22

June 2024
EHN S
PARTNERS

Swanson Industries i EHNS Partners, LLC
Notice of Intent to Modify Approval Order June 2024
TABLE OF CONTENTS
SECTION PAGE NO.

1 INTRODUCTION ............................................................................................... 1-1
1.1 Modification Description ................................................................................................... 1-1
1.2 Application Contents ......................................................................................................... 1-1
2 SITE PLAN ..................................................................................................... 2-1
3 BACT ANALYSIS .............................................................................................. 3-1
3.1 Parts Washer BACT .......................................................................................................... 3-1
4 EMISSION CALCULATION DOCUMENTATION ............................................................. 4-1
4.1 Parts Washer Emissions ................................................................................................... 4-1

APPENDICES
Appendix A: UDAQ Form 1 – Notice of Intent Checklist
Appendix B: UDAQ Form 2 – Company Information
Appendix C: UDAQ Form 4 – Welding Baghouse Modification
Appendix D: UDAQ Form 4 – Solvent Cleaner Process Data
Appendix E: UDAQ Form 21 – Solvent Cleaner Detail Form
Appendix F: UDAQ Form 5 – Emissions Information
Appendix G: Parts Washer Solvent SDS
Appendix H: Emissions Calculations

Swanson Industries 1-1 EHNS Partners, LLC
Notice of Intent to Modify Approval Order June 2024
1 INTRODUCTION
Swanson Industries, Inc. (Swanson) located at 610 Industrial Road in Helper, Utah operates a mining
equipment repair and refurbishing facility with SIC code 3053. Swanson's equipment repairs and
maintenance processes take place in two shop buildings at the site: the rebuild shop and the jack shop. The
onsite activities include abrasive blasting and grinding, painting and coating, and welding and cutting
including a laser cladding process. Natural gas combustion is used to operate space and water heaters for
the facility. The facility currently operates under a Utah Department of Environmental Quality (DEQ) Division
of Air Quality (DAQ) air Approval Order Number DAQE-IN157040002-22.
Swanson is located in Carbon County which is currently an attainment area. Swanson is a minor source of
air emissions and is subject to 40 C.F.R. Part 63, Subpart XXXXXX: National Emission Standards for
Hazardous Air Pollutants Area Source Standards for Nine Metal Fabrication and Finishing Source Categories.
1.1 Modification Description
On August 10, 2023, DAQ conducted an inspection of the Swanson facility and found the differential pressure
reading range on the welding baghouse gauge to be different than the permitted range of three (3) to eight
(8) inches of water column (inH2O) which is established in Approval Order Condition II.B.4.c. The baghouse
differential pressure gauge acceptable range is zero to four inH2O. Swanson received a Letter of Warning
for the discrepancy and was instructed to submit the Notice of Intent to Modify the Approval Order to reflect
the correct operating range. This modification will not result in any change in the welding emissions or other
Approval Order conditions.
As part of this modification application, Swanson is requesting inclusion of emissions from six solvent parts
washers and an ultrasonic cleaner in the facility’s volatile organic compound (VOC) and hazardous air
pollutant (HAP) emission limits from evaporative sources established in Approval Order Condition II.B.2.b.
The condition states that the facility may not emit more than 4.77 tons of VOCs, 3.15 tons of xylene, and
0.14 tons of toluene from evaporative sources including painting, printing, coating, and cleaning. The original
Notice of Intent Application did not include VOC or HAP emissions from the solvent usage in the parts
washers in the calculation of facility’s evaporative source potential to emit. The original application emissions
calculations included only paint and coating usage; therefore, the emission limits are too stringent when
accounting for cleaning evaporative emissions.
The proposed modifications will not exceed the emissions thresholds established in UDEQ Regulation
Section R307-410-4 Table 1, therefore the requirement to conduct air quality modeling does not apply.
1.2 Application Contents
The required DAQ application forms are provided in Appendixes A – F. As required, a Site Plan is provided
in Section 2. A Best Available Control Technology (BACT) analysis for new and modified equipment is
provided in Section 3. Emissions calculation documentation for the parts washers and specifications are
provided in Section 4.

Swanson Industries 2-1 EHNS Partners, LLC
Notice of Intent to Modify Approval Order June 2024
2 SITE PLAN

Swanson Industries 3-1 EHNS Partners, LLC
Notice of Intent to Modify Approval Order June 2024
3 BACT ANALYSIS
Swanson must demonstrate that each emissions unit modified or constructed as part of this application will
receive Best Available Control Technology (BACT). BACT means an emission limitation based on the
maximum degree of reduction which is achievable for each pollutant considering energy, environmental,
and economic impacts and other costs. BACT must be applied to all regulated pollutants from new and
modified emission units, including fugitive as well as stack emissions. There are five key steps to a “top-
down” BACT approach:
1. Identify all control technologies potentially applicable to the processes.
2. Eliminate technically infeasible options.
3. Rank remaining control technologies by control effectiveness.
4. Evaluate technically feasible control alternatives (energy, environmental, and economic impacts)
including toxic and hazardous pollutant impacts, if a control technology less effective than the top
option is proposed as BACT.
5. Select BACT in consideration of energy, environmental, and economic impacts.
An evaluation of potentially applicable emission control technologies has been conducted utilizing technical
literature, recent EPA/state/local air pollution control requirements, the U.S. EPA Control Technology
Database, and a search of the Reasonably Available Control Technology (RACT)/BACT/Lowest Achievable
Emission Rate (LAER) Clearinghouse (RBLC) published on the EPA Clean Air Technology Center.
Because the modification to the welding baghouse pressure differential gauge acceptable range will not
change the emissions associated with the welding process or control efficiency of the baghouse, a BACT
analysis has not been completed.
3.1 Parts Washer BACT
Cold (unheated) solvent cleaners have the potential to emit Volatile Organic Compounds (VOCs) and
Hazardous Air Pollutants (HAPs) during normal use from evaporative losses of the solvent in use. Potential
emissions minimization techniques include: (1) using a low-VOC and low-HAP content solvent, (2) using
parts washer design to minimize emissions, and (3) using proper work practices to minimize solvent drag
out and evaporation. Add-on pollution control for small reservoir parts washers is not technically or
economically feasible.
Due to the parts cleaning demands at Swanson, the use of a lower VOC solvent is not a technically feasible
option. However, Swanson uses a solvent with a vapor pressure of 0.5 mm Hg at room temperature and
uses a parts washers with rigid tight-fitting lids. The units remain closed when not in use to minimize
evaporative losses. Swanson proposes this as BACT for the parts washers.

Swanson Industries 4-1 EHNS Partners, LLC
Notice of Intent to Modify Approval Order June 2024
4 EMISSION CALCULATION DOCUMENTATION
There is no anticipated change in emissions from the welding operation or the baghouse control equipment
as a result of the pressure differential gauge acceptable range modification requested. Therefore, the
emissions from this process will remain identical to those identified as part of the original NOI Application.
4.1 Parts Washers Emissions
Swans operates six Safety Kleen parts washers that are maintained by a third-party contractor. The parts
washers dispense solvent through a metal brush or small nozzle via non-pressurizes flow from a small
electric pump. The dispensed solvent then drains into a solvent storage reservoir. Specifications for each
parts washer are summarized in the table below.
Table 4-1: Parts Washers Specifications
Parts Washer Specifications Model 30 Model 44 Model 250
(2 total) (2 total) (2 total)
Freeboard:
a. Distance from solvent surface to top
edge of degreaser (inches)
b. Width at solvent surface (inches)
c. Freeboard ratio
Remote reservoir Remote reservoir Remote reservoir
Tank Dimensions
a. Length (inches)
b. Width (inches)
c. Height (inches)
d. Tank Capacity (gallons)

33.25 inches
22.25 inches
8 inches
15 gallons
45.5 inches
21.5 inches
10.75 inches
32 gallons
36 inches
27 inches
inches
25 gallons
The parts washers have the potential to emit Volatile Organic Compounds (VOCs) and Hazardous Air
Pollutants (HAPs) during normal use from evaporative losses of the solvent in use. Actual emissions from
the units can be calculated on a mass balance basis by monitoring and recording the amount of solvent
added to the parts washers and subtracting any solvent that is removed from the parts washers and
disposed of as waste.
Over the past six years, Swanson has consumed ~250 pounds of solvent per year, as estimated by
calculating the total amount of new solvent added to the units minus the amount of solvent disposed of as
waste. It can conservatively be assumed that this consumption is equivalent to the evaporative losses and
therefore the fugitive VOC and HAP emissions from the part washer (equivalent to 0.125 tons per year).
AP-42 Section 4.6, Table 4.6-2 establishes a cold cleaner annual emissions rate of 0.33 tons per year, per
unit, equivalent to 1.98 tons per year for all six parts washers. While it is unlikely Swanson will achieve this
magnitude of solvent usage, Swanson is anticipating growth in product demand and usage of the parts

Swanson Industries 4-2 EHNS Partners, LLC
Notice of Intent to Modify Approval Order June 2024
washer the future. Therefore, the facility is requesting to comply with a HAP and VOC emission limit of 1.98
tons per year from the parts washer, equivalent to ~566 gallons of solvent consumption per year. For
benzene, the facility is proposing to comply with a limit of 1.80 tons per year to remain below carcinogenic
emission threshold values.
In addition to the solvent parts washers, Swanson operates one Super Pro Ultrasonic Cleaner. The ultrasonic
cleaner uses a non-hazardous acid cleaner called Omega DeScaler which has a VOC content of 70% and
contains no HAPs (SDS supplied in Appendix G). Swanson uses one gallon of Omega DeScaler each month
prior to replacement. Conservatively assuming 100% of the VOC is emitted via evaporative loses, the
ultrasonic cleaner has the potential to emit 0.04 tons per year of VOCs.
Based on the density, VOC, and HAP content information contained in the solvent SDS (supplied as Appendix
G), this is equivalent to the emissions rates summarized in the table below.
Table 4-2: Proposed Permitted Emission Limits
Pollutant Solvent Content1
(wt%)
Maximum Annual
Emissions
(lbs/year)
Maximum Annual
Emissions
(tons/year)
Volatile Organic
Compounds (VOCs) 100% 4041 2.02
Total HAPs 100% 39601 1.981
Benzene (HAP)2 100% 3592 1.80
Ethyl Benzene (HAP) 100% 3960 1.98
Naphthalene (HAP) 100% 3960 1.98
Toluene (HAP) 100% 3960 1.98
Cumene (HAP) 100% 3960 1.98
1 The Safety Kleen SDS indicates the presence of benzene, ethyl benzene, naphthalene, toluene, and cumene
but does not speciate concentration of each HAP. Safety Kleen does not have additional information
regarding component concentrations. Therefore, the conservative assumption that the solvent contains
100% of each HAP has been employed in the absence of conclusive data.
2 Benzene emissions have been capped to remain below carcinogenic emission threshold values

Swanson Industries EHNS Partners, LLC
Notice of Intent to Modify Approval Order June 2024
APPENDIX A: UDAQ FORM 1 – NOTICE OF INTENT CHECKLIST
Form 1 Date __________________
Notice of Intent (NOI) Application Checklist
Company __________________
Utah Division of Air Quality
New Source Review Section
Source Identification Information [R307-401-5]
1. Company name, mailing address, physical address and telephone number 
2. Company contact (Name, mailing address, and telephone number)
3.Name and contact of person submitting NOI application (if different than 2) 4.Source Universal Transverse Mercator (UTM) coordinates 
5. Source Standard Industrial Classification (SIC) code 
6.Area designation (attainment, maintenance, or nonattainment)
7.Federal/State requirement applicability (NAAQS, NSPS, MACT, SIP, etc.)
8.Source size determination (Major, Minor, PSD) 9. Current Approval Order(s) and/or Title V Permit numbers 
NOI Application Information: [R307-401]










N/A 
N/A 
A.Air quality analysis (air model, met data, background data, source impact analysis) N/A 
1.Detailed description of the project and source process
2.Discussion of fuels, raw materials, and products consumed/produced3.Description of equipment used in the process and operating schedule
4.Description of changes to the process, production rates, etc.
5.Site plan of source with building dimensions, stack parameters, etc.
6.Best Available Control Technology (BACT) Analysis [R307-401-8]A.BACT analysis for all new and modified equipment
7.Emissions Related Information: [R307-401-2(b)]
A.Emission calculations for each new/modified unit and site-wide
(Include PM10, PM2.5, NOx, SO2, CO, VOCs, HAPs, and GHGs)B.References/assumptions, SDS, for each calculation and pollutant
C.All speciated HAP emissions (list in lbs/hr)
8.Emissions Impact Analysis – Approved Modeling Protocol [R307-410]
A.Composition and physical characteristics of effluent(emission rates, temperature, volume, pollutant types and concentrations)
9.Nonattainment/Maintenance Areas – Major NSR/Minor (offsetting only) [R307-403]
A.NAAQS demonstration, Lowest Achievable Emission Rate, Offset requirements
B.Alternative site analysis, Major source ownership compliance certification
10.Major Sources in Attainment or Unclassified Areas (PSD) [R307-405, R307-406]
B.Visibility impact analysis, Class I area impact
11.Signature on Application
N/A 
Note: The Division of Air Quality will not accept documents containing confidential information or data.
Documents containing confidential information will be returned to the Source submitting the application.

Swanson Industries EHNS Partners, LLC
Notice of Intent to Modify Approval Order June 2024

APPENDIX B: UDAQ FORM 2 – COMPANY INFORMATION
Form 2 Date June 2024
Company InformationlNotice of Intent (NOl)
Utah Division of Air Quality
New Source Review Section
Application for:Initial Approval Order [~Approval Order Modification
General Owner and Source Information
I -Company name and mailing address:2.Company*contact for environmental matters:
Swanson Industries,Inc.Ashlyn Harlan
610 Industrial Road Phone no.:[phone]
Helper,Utah 84526 Email:[e-mail]
Phone No.:[phone]
Fax No.:()~infom,auon can be provided In a coverletter
3.Source name and physical address (if different from 4.Source Property Universal Transverse Mercator
above):Same as above coordinates (UTM),including System and Datum:
UTM:12 Datum NAD83
X:512,029m
Y:4,392,111 mPhoneno.:
Faxno.:
5.The Source is located in:~thon County 6.Standard Industrial Classification Code (SIC)
105&
7.If request for modification,A0#to be modified:DAQE ii 1N15704000Z.22 DATED:
8.Brief (50 words or less)description of process.
Modification of baghouse differential pressure range to reflect manfacturer’s recommended operating
range and inclusion of parts washers and associated emissions.
Electronic NOl
9.A complete and accurate electronic NOl submitted to DAQ Permitting Mangers Jon Black (jlblack©utah.gov)or Alan
Humpherys (ahumpherys~utah.gov)can expedite review process.Please mark application type.
Hard Copy Submittal Electronic Copy Submittal
AuthorizationlSignature
I hereby certify that the information and data submitted in and with this application is completely true,accurate and
complete,based on reasonable inauiry made by me an~Jg..tb~bes~of m knowledge and belief.
signature~r’\._.c~~~-çL ~~r?iZc ~C ED
Telephone Number:Date:
~Email:Name (Type or pnnt)
AIR QUALITY
Both
1 of I

Swanson Industries EHNS Partners, LLC
Notice of Intent to Modify Approval Order June 2024

APPENDIX C: UDAQ FORM 4 – WELDING BAGHOUSE MODIFICATION
Page 1 of 1
Form 4 Company____________________________
Project Information Site ______________________________

Utah Division of Air Quality
New Source Review Section
Process Data - For Modification/Amendment ONLY
1. Permit Number_______________________________
If submitting a new permit, then use Form 3
Requested Changes
2. Name of process to be modified/added:
_______________________________

End product of this process:

_______________________________

3. Permit Change Type: New Increase*
Equipment
Process

Condition Change ____________________
Other ______________________________
Other ______________________________

Other ______________________________

4. Does new emission unit affect existing
permitted process limits?

Yes No
5. Condition(s) Changing:

6. Description of Permit/Process Change**

7. New or modified materials and quantities used in process. **
Material Quantity Annually

8. New or modified process emitting units **
Emitting Unit(s) Capacity(s) Manufacture Date(s)

*If the permit being modified does not include CO2e or PM2.5, the emissions need to be calculated and submitted to DAQ, which may result in an
emissions increase and a public comment period.
**If additional space is required, please generate a document to accommodate and attach to form.

Swanson Industries EHNS Partners, LLC
Notice of Intent to Modify Approval Order June 2024

APPENDIX D: UDAQ FORM 4 – SOLVENT CLEANER PROCESS DATA
Page 1 of 1
Form 4 Company____________________________
Project Information Site ______________________________

Utah Division of Air Quality
New Source Review Section
Process Data - For Modification/Amendment ONLY
1. Permit Number_______________________________
If submitting a new permit, then use Form 3
Requested Changes
2. Name of process to be modified/added:
_______________________________

End product of this process:

_______________________________

3. Permit Change Type: New Increase*
Equipment
Process

Condition Change ____________________
Other ______________________________
Other ______________________________

Other ______________________________

4. Does new emission unit affect existing
permitted process limits?

Yes No
5. Condition(s) Changing:

6. Description of Permit/Process Change**

7. New or modified materials and quantities used in process. **
Material Quantity Annually

8. New or modified process emitting units **
Emitting Unit(s) Capacity(s) Manufacture Date(s)

*If the permit being modified does not include CO2e or PM2.5, the emissions need to be calculated and submitted to DAQ, which may result in an
emissions increase and a public comment period.
**If additional space is required, please generate a document to accommodate and attach to form.

Swanson Industries EHNS Partners, LLC
Notice of Intent to Modify Approval Order June 2024

APPENDIX E: UDAQ FORM 21 – SOLVENT CLEANER DETAIL FORM
Utah Division of Air Quality
New Source Review Section Company: _______________________ Site/Source: ______________________
Form 21 Date: ____________________________
Solvent Metal Cleaning (Degreasers)

Process Information
1. Operating schedule:

______ hrs/day

______ days/wk

______ weeks/year
2. Degreaser
Manufacturer:_________________
Model no.:____________________
Type:
□ Conveyorized □ Cold solvent
□ Open top vapor □ Batch
□ Other_______________________
3. Decription of metal parts or products
cleaned:
_______________________________
Average number of parts cleaned/hour:
_______________________________
Maximum number cleaned per hour:
_______________________________
4. Solvent usage:
Type: ____________________________
Gallons used during year: ____________
Vapor pressure: ______ (Psia @ 100 OF)
5. Solvent is: □ Sprayed □ Heated, temperature ____ OF
□ Agitated, by: □ Use of pump □ Compressed air
□ Vertical motion □ Ultrasonics
□ Other _______________________
6. Amount of solvent waste disposed of
throughout the year: _______ gallons
If known, solvent content in waste
___________________ % by volume
Method of disposal: ________________
________________________________
7. Freeboard:
a. Distance from solvent surface to top edge of degreaser
_______ inches
b. Width (not length) of tank at solvent surface _______ inches
c. Freeboard ratio, (a) above divided by (b) above
______________
8. Furnish manufacturer's Material Safety Data Sheets for all chemicals used in process.
Cold Cleaner Information
9. Equipped with cover: □ yes □ no
Easily operated with
one hand? □ yes □ no
10. Tank dimensions: Length: ________
Width: ________ Height: ________
Tank capacity: ______ gals of solvent
11. Method of draining parts:
____________________
____________________
12. Cold Cleaner has: □ Water cover □ Refrigerated chiller, operating temperature: _______ OF
□ Carbon adsorption □ Other control system: ____________________________________
□ None of the above
13. Ventilation: □ Carbon adsorption system (submit form 5)
□ None □ Other (describe) ______________________________________________

Page 1 of 3

Page 2 of 3
Form 21 – Solvent Metal Cleaning (Degreasers)
(Continued)

Open Top Vapor Degreaser and Conveyorized Degreaser Information
14. Dimensions of top opening:

Length: ______________

Width: _______________

15. Cover: □ yes □ no
Powered: □ yes □ no
Fixed spray
nozzles: □ yes □ no

16. Safety switches:

□ Condenser flow switch and thermostat which shuts off the sump heat if the
condenser coolant is either not circulating or too warm.
□ Device, other than a condenser flow switch and thermostat, which shuts off the
sump heat if the condenser coolant is either not circulating or too warm
(describe):_____________________________________________________
□ Spray safety switch which shuts off the spray pump if the vapor level drops
below any fixed spray nozzle.
□ Vapor level control thermostat which shuts off the sump heat when the vapor
level rises too high.
□ Device, other than a vapor level control thermostat, which shuts off the sump
heat when the vapor level rises too high
(describe):_____________________________________________________
______________________________________________________________
□ None of the above.

17. Indicate the type of pollution controls that open top vapor degreaser has (carbon filter, condenser, etc.):
_________________________________________________________________________________________
Conveyorized Degreaser Information
18. Type of degreaser system:
□ Cold □ Vapor
19. Operating temperature of solvent?
______________
20. Downtime covers:
□ yes □ no
21. Air/vapor interface is: ____________________sq. ft. (attach calculations )
22. Degreaser Controls:
□ Refrigerated freeboard
chiller.
□ Refrigerated condenser
coils.
□ Carbon adsorption.
□ Other control system
excluding condenser coils
and freeboard water
jacket, which reduces
solvent emission
(describe system and %
control efficiency).
□ None of the above.

23. Safety Switches:
□ Condenser flow switch and thermostat which shuts off the sump heat if the
condenser coolant is either not circulating or too warm.
□ Device, other than a condenser flow switch and thermostat, which shuts
off the sump heat if the condenser coolant is either not circulating or too
warm
(describe):________________________________________________
□ Spray safety switch which shuts off the spray pump if the vapor level drops
below any fixed spray nozzle.
□ Vapor level control thermostat which shuts off the sump heat when the
vapor level rises too high.
□ Device, other than a vapor level control thermostat, which shuts off the
sump heat when the vapor level rises too high (describe):
_________________________________________________________
_________________________________________________________
□ None of the above.
24. Conveyorized degreaser is equipped with the following equipment for preventing cleaned parts from carrying out
solvent liquid or vapor: □ None □ Drying tunnel □ Rotating basket □ Other

Page 3 of 3
Form 21 – Solvent Metal Cleaning (Degreasers)
(Continued)

Emissions Calculations (PTE)
25. Calculated emissions for each tank
VOC _________Lbs/hr_____ Tons/yr
HAPs_________Lbs/hr (speciate)______Tons/yr (speciate)
Specify the method of calculations. Also, provide manufacture’s Material Safety Data Sheets (MSDS) for
products being used. Submit calculations as an appendix.

Instructions

NOTE: 1. Submit this form in conjunction with Form 1 and Form 2.
2. Call the Division of Air Quality (DAQ) at [phone] if you have problems or questions in filling out
this form. Ask to speak with a New Source Review engineer. We will be glad to help!

1. Indicate the operating schedule of the degreaser.
2. Indicate the manufacturer, model number, serial number and type of degreaser.
3. Indicate the type of parts that will be cleaned in the degreaser (attach details) and the average and maximum
number of parts cleaner per hour.
4. Indicate the type, quantity, and vapor pressure of the solvent used in the degreaser.
5. Indicate whether the solvent is sprayed, heated, agitated, and to what temperature. Indicate if and how solvent is
agitated.
6. Indicate the amount and way waste solvent is disposed.
7. Indicate the calculations for freebroad ratio.
8. Supply the manufacturer’s material safety data sheets of any chemicals used with this application.
9. Indicate whether the degreaser is covered and if that cover is easily operated with one hand.
10. Supply the tank dimensions and capacity.
11. Describe the method of draining the degreased parts.
12. Indicate if any type of controls is used with the system and what they are.
13. Describe the carbon adsorption system if applicable.
14. Give dimensions of top opening.
15. Indicate if degreaser is equipped with cover and spray nozzles.
16. Indicate the types of safety switches used on the degreaser.
17. Indicate the type of controls used on the open top vapor degreaser.
18. Tell whether the degreaser uses a cold or a vapor system.
19. Give the operating temperature of the solvent.
20. Indicate whether the conveyorized degreaser has downtime covers.
21. Provide calculations showing the air/vapor interface. This is estimated using the dimensions of the open portion of
the tank at the condenser level.
22. Indicate the degreaser controls.
23. Indicate the types of safety switches used on the degreaser.
24. Indicate the type of equipment used to prevent carry out emissions.
25. Supply calculations for all criteria pollutants and HAPs (speciate, please). Use AP-42 or manufacturers’ data to
complete your calculations.

f:\aq\ENGINEER\GENERIC\Forms 2010\Form21 Degreasers.doc
Revised 12/20/10

Swanson Industries EHNS Partners, LLC
Notice of Intent to Modify Approval Order June 2024

APPENDIX F: UDAQ FORM 5 – EMISSIONS INFORMATION
Page 1 of 1
Company___________________________
Site _____________________________
Form 5
Emissions Information
Criteria/GHGs/ HAP’s
Utah Division of Air Quality
New Source Review Section
Potential to Emit* Criteria Pollutants & GHGs
Criteria Pollutants Permitted Emissions
(tons/yr)
Emissions Increases
(tons/yr)
Proposed Emissions
(tons/yr)
PM10 Total
PM10 Fugitive
PM2.5
NOx
SO2
CO
VOC
VOC Fugitive
NH3
Greenhouse Gases CO2e CO2e CO2e
CO2
CH4
N2O
HFCs
PFCs
SF6
Total CO2e
*Potential to emit to include pollution control equipment as defined by R307-401-2.
Hazardous Air Pollutants** (**Defined in Section 112(b) of the Clean Air Act )
Hazardous Air
Pollutant***
Permitted Emissions
(tons/yr)
Emission Increase
(tons/yr)
Proposed
Emission (tons/yr)
Emission Increase
(lbs/hr)
Total HAP
*** Use additional sheets for pollutants if needed

Swanson Industries EHNS Partners, LLC
Notice of Intent to Modify Approval Order June 2024

APPENDIX G: PARTS WASHER SOLVENT SDS

Safety‐Kleen Premium Solvent (Virgin and Recycled) 
Safety Data Sheet          
According To Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules And Regulations And According To The Hazardous Products Regulation  (February 11, 2015). 
Revision Date: 02/24/2022 Date of Issue:  01/26/1995 Supersedes Date: 10/29/2019 Version: 1.0 

02/24/2022  EN (English US)    1/8 

SECTION 1: IDENTIFICATION                                           
1.1.       Product Identifier 
Product Form: Substance 
Product Name: Safety‐Kleen Premium Solvent (Virgin and Recycled) 
CAS‐No.: 64742‐47‐8 
Product Code: 82658 
Synonyms: Safety‐Kleen Premium Gold Solvent; Safety‐Kleen Continued Use Product Solvent (CUP); High Flash Degreasing Solvent; 
Parts Washer Solvent; Petroleum Distillates; Petroleum Naphtha; Naphtha, Solvent; Mineral Spirits 
SDS No.: 82658 
1.2.       Intended Use of the Product    
Cleaning and degreasing metal parts. For professional use only. 
1.3.       Name, Address, and Telephone of the Responsible Party 

Manufacturer    
Safety‐Kleen Systems, Inc. 
42 Longwater Drive 
Norwell, MA 02061‐9149  
1‐800‐669‐5740  
www.safety‐kleen.com 

Supplier in Canada 
Safety‐Kleen Canada, Inc. 
25 Regan Road 
Brampton, Ontario L7A 1B2 
Canada 
1.4.       Emergency Telephone Number    
Emergency Number  : 1‐800‐468‐1760 
SECTION 2: HAZARDS IDENTIFICATION   
2.1.       Classification of the Substance or Mixture 
GHS‐US/CA Classification 

Flam. Liq. 4  H227  
Skin Irrit. 2  H315  
STOT SE 3  H336  
Asp. Tox. 1  H304  

Full text of hazard classes and H‐statements : see section 16 
2.2.       Label Elements 
GHS‐US/CA Labeling  
Hazard Pictograms (GHS‐US/CA)  : 

GHS07  
GHS08 

Signal Word (GHS‐US/CA)  : Danger 
Hazard Statements (GHS‐US/CA)  : H227 ‐ Combustible liquid. 
H304 ‐ May be fatal if swallowed and enters airways. 
H315 ‐ Causes skin irritation. 
H336 ‐ May cause drowsiness or dizziness. 
Precautionary Statements (GHS‐US/CA)  : P210 ‐ Keep away from heat, hot surfaces, sparks, open flames and other ignition 
sources. No smoking. 
P261 ‐ Avoid breathing vapors, mist, or spray. 
P264 ‐ Wash hands, forearms, and other exposed areas thoroughly after handling. 
P271 ‐ Use only outdoors or in a well‐ventilated area. 
P280 ‐ Wear protective gloves, protective clothing, and eye protection. 
P301+P310 ‐ IF SWALLOWED: Immediately call a POISON CENTER or doctor. 
P302+P352 ‐ IF ON SKIN: Wash with plenty of water. 
P304+P340 ‐ IF INHALED: Remove person to fresh air and keep comfortable for 
Safety‐Kleen Premium Solvent (Virgin and Recycled) 
Safety Data Sheet  
According To Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules And Regulations And According To The Hazardous Products Regulation  (February 11, 2015). 

02/24/2022  EN (English US)    2/8 

breathing. 
P312 ‐ Call a POISON CENTER or doctor if you feel unwell. 
P321 ‐ Specific treatment (see section 4 on this SDS). 
P331 ‐ Do NOT induce vomiting. 
P332+P313 ‐ If skin irritation occurs: Get medical advice/attention. 
P362+P364 ‐ Take off contaminated clothing and wash it before reuse. 
P370+P378 ‐ In case of fire: Use appropriate media (see section 5) to extinguish. 
403+P233 ‐ Store in a well‐ventilated place. Keep container tightly closed. 
P405 ‐ Store locked up. 
P501 ‐ Dispose of contents/container in accordance with local, regional, national, and 
international regulations. 

2.3.       Other Hazards  
Exposure may aggravate pre‐existing eye, skin, or respiratory conditions. 
2.4.       Unknown Acute Toxicity (GHS‐US/CA)    
No additional information available 
SECTION 3: COMPOSITION/INFORMATION ON INGREDIENTS   
3.1.  Substance 
Name  Synonyms  Product Identifier  % * 
Petroleum 
distillates, 
hydrotreated 
light 
Distillates (petroleum), hydrotreated light / Distillates, petroleum, hydrotreated 
light / Hydrotreated light distillate / Kerosene, hydrotreated / Petroleum 
distillates, hydrotreated light (A complex combination of hydrocarbons obtained 
by treating a petroleum fraction with hydrogen in the presence of a catalyst.  It 
consists of hydrocarbons having carbon numbers predominantly in the range of 
C9‐16 and boiling in the range of approximately 150‐290°C.)  
(CAS‐No.) 64742‐47‐8  100 
3.2.  Mixture 
Not applicable 
*Percentages are listed in weight by weight percentage (w/w%) for liquid and solid ingredients. Gas ingredients are listed in volume 
by volume percentage (v/v%). 
SECTION 4: FIRST AID MEASURES   
4.1.       Description of First‐aid Measures 
General: Never give anything by mouth to an unconscious person. If you feel unwell, seek medical advice (show the label where 
possible). 
Inhalation: When symptoms occur: go into open air and ventilate suspected area. Obtain medical attention if breathing difficulty 
persists. 
Skin Contact: Immediately remove contaminated clothing. Immediately drench affected area with water for at least 15 minutes. 
Obtain medical attention if irritation develops or persists. 
Eye Contact: Rinse cautiously with water for at least 15 minutes. Remove contact lenses, if present and easy to do. Continue rinsing. 
Obtain medical attention if irritation develops or persists. 
Ingestion: Do NOT induce vomiting. Rinse mouth. Immediately call a POISON CENTER or doctor/physician. 
4.2.       Most Important Symptoms and Effects Both Acute and Delayed 
General: May cause drowsiness and dizziness. Causes skin irritation. May be fatal if swallowed and enters airways. 

Inhalation: High concentrations may cause central nervous system depression such as dizziness, vomiting, numbness, drowsiness, 
headache, and similar narcotic symptoms. 
Skin Contact: Redness, pain, swelling, itching, burning, dryness, and dermatitis. 
Eye Contact: May cause slight irritation to eyes. 
Ingestion: Aspiration into the lungs can occur during ingestion or vomiting and may cause lung injury. 
Chronic Symptoms: Repeated exposure may cause skin dryness or cracking. 
4.3.       Indication of Any Immediate Medical Attention and Special Treatment Needed   
If exposed or concerned, get medical advice and attention. If medical advice is needed, have product container or label at hand. 
Safety‐Kleen Premium Solvent (Virgin and Recycled) 
Safety Data Sheet  
According To Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules And Regulations And According To The Hazardous Products Regulation  (February 11, 2015). 

02/24/2022  EN (English US)    3/8 

SECTION 5: FIRE‐FIGHTING MEASURES   
5.1.       Extinguishing Media 
5.2.       Special Hazards Arising From the Substance or Mixture 
5.3.       Advice for Firefighters 
Precautionary Measures Fire: Exercise caution when fighting any chemical fire.  
Firefighting Instructions: Use water spray or fog for cooling exposed containers. In case of major fire and large quantities: Evacuate 
area. Fight fire remotely due to the risk of explosion. 
Protection During Firefighting: Do not enter fire area without proper protective equipment, including respiratory protection.  
Hazardous Combustion Products: Incomplete combustion is likely to give rise to a complex mixture of airborne solid and liquid 
particulates and gases, including carbon monoxide and unidentified organic and inorganic compounds. If sulfur compounds are 
present in appreciable amounts, combustion products may include also H2S and SOx (sulfur oxides) or sulfuric acid.  
Other Information: Do not allow run‐off from fire fighting to enter drains or water courses. 
5.4.       Reference to Other Sections 
Refer to Section 9 for flammability properties. 

SECTION 6: ACCIDENTAL RELEASE MEASURES   
6.1.       Personal Precautions, Protective Equipment and Emergency Procedures  
General Measures: Avoid breathing (vapor, mist, spray). Do not get in eyes, on skin, or on clothing. Keep away from heat, hot 
surfaces, sparks, open flames, and other ignition sources. No smoking. Use special care to avoid static electric charges. 
6.1.1.      For Non‐Emergency Personnel  
Protective Equipment: Use appropriate personal protective equipment (PPE). 
Emergency Procedures: Evacuate unnecessary personnel. Stop leak if safe to do so. 
6.1.2.      For Emergency Personnel  
Protective Equipment: Equip cleanup crew with proper protection. 
Emergency Procedures: Upon arrival at the scene, a first responder is expected to recognize the presence of dangerous goods, 
protect oneself and the public, secure the area, and call for the assistance of trained personnel as soon as conditions permit. 
Ventilate area. Eliminate ignition sources. 
6.2.       Environmental Precautions  
Prevent entry to sewers and public waters. Avoid release to the environment. Collect spillage. 
6.3.       Methods and Materials for Containment and Cleaning Up  
For Containment: Contain any spills with dikes or absorbents to prevent migration and entry into sewers or streams. As an 
immediate precautionary measure, isolate spill or leak area in all directions. 
Methods for Cleaning Up: Clean up spills immediately and dispose of waste safely. Transfer spilled material to a suitable container 
for disposal. Contact competent authorities after a spill. Absorb and/or contain spill with inert material. Do not take up in 
combustible material such as: saw dust or cellulosic material. Use only non‐sparking tools. 
6.4.       Reference to Other Sections   
See Section 8 for exposure controls and personal protection and Section 13 for disposal considerations. 

SECTION 7: HANDLING AND STORAGE 
7.1.       Precautions for Safe Handling  
Additional Hazards When Processed: Handle empty containers with care because residual vapors are flammable. 
Precautions for Safe Handling:  Wash hands and other exposed areas with mild soap and water before eating, drinking or smoking 
and when leaving work. Avoid prolonged contact with eyes, skin and clothing. Avoid breathing vapors, mist, spray. Take 
precautionary measures against static discharge. Use only non‐sparking tools. 
Hygiene Measures: Handle in accordance with good industrial hygiene and safety procedures.       
7.2.       Conditions for Safe Storage, Including Any Incompatibilities    
Suitable Extinguishing Media: Dry chemical powder, alcohol‐resistant foam, carbon dioxide (CO2). Water may be ineffective but 
water should be used to keep fire‐exposed container cool.  
Unsuitable Extinguishing Media: Do not use a heavy water stream. A heavy water stream may spread burning liquid.  
Fire Hazard: Combustible liquid. Will float and can be reignited on water surface.  
Explosion Hazard: May form flammable or explosive vapor‐air mixture.  
Reactivity: Reacts violently with strong oxidizers. Increased risk of fire or explosion.  
Safety‐Kleen Premium Solvent (Virgin and Recycled) 
Safety Data Sheet  
According To Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules And Regulations And According To The Hazardous Products Regulation  (February 11, 2015). 

02/24/2022  EN (English US)    4/8 

Technical Measures: Comply with applicable regulations. Take action to prevent static discharges. 
Storage Conditions: Store in a dry, cool place. Keep/Store away from direct sunlight, extremely high or low temperatures and 
incompatible materials. Store locked up/in a secure area. Store in a well‐ventilated place. Keep container tightly closed. Keep in 
fireproof place. 
Incompatible Materials: Strong oxidizers. 
7.3.       Specific End Use(s)       
Cleaning and degreasing metal parts. For professional use only. 
SECTION 8: EXPOSURE CONTROLS/PERSONAL PROTECTION 
8.1.       Control Parameters  

For substances listed in section 3 that are not listed here,  there are no established exposure limits from the manufacturer, supplier, 
importer, or the appropriate advisory agency including: ACGIH (TLV), AIHA (WEEL), NIOSH (REL), OSHA (PEL), or Canadian provincial 
governments. 

8.2.       Exposure Controls 
Appropriate Engineering Controls: Ensure adequate ventilation, especially in confined areas. Ensure all national/local regulations 
are observed. Proper grounding procedures to avoid static electricity should be followed. 

Personal Protective Equipment: Gloves. Protective clothing. Safety glasses. Insufficient ventilation: wear respiratory protection. 

Materials for Protective Clothing: Chemically resistant materials and fabrics.  

Hand Protection: Wear protective gloves. 

Eye and Face Protection: Safety glasses with side shields. 

Skin and Body Protection: Wear suitable protective clothing. 

Respiratory Protection: If exposure limits are exceeded or irritation is experienced, approved respiratory protection should be worn. 
In case of inadequate ventilation, oxygen deficient atmosphere, or where exposure levels are not known wear approved respiratory 
protection. 

Other Information: When using, do not eat, drink or smoke. 
SECTION 9: PHYSICAL AND CHEMICAL PROPERTIES 
9.1.       Information on Basic Physical and Chemical Properties 
Physical State  : Liquid 
Appearance  : Clear, colorless to pale yellow 
Odor  : Mild, hydrocarbon 
Odor Threshold  : 30 ppm (based on Stoddard Solvent) 
pH  : No data available 
Evaporation Rate  : < 1 (butyl acetate = 1) 
Melting Point  : ‐49 °C (‐56.2 °F) 
Freezing Point  : ‐43 °C (‐45.4 °F) 
Boiling Point  : 192 – 205 °C (377.6 – 401 °F) 
Flash Point  : > 67 °C [Tagliabue(ASTM D‐56)] (152.6 °F) 
Auto‐ignition Temperature  : 220 °C (428 °F) 
Decomposition Temperature  : No data available 
Flammability (solid, gas)  : Not applicable 
Lower Flammable Limit  : 0.8 % 
Upper Flammable Limit  : 6 % 
Vapor Pressure  : 0.067 kPa (0.5 mmHg)[room temperature) 
Relative Vapor Density at 20°C  : 5 (air = 1) 
Relative Density  : No data available 
Density  : ≈ 6.67 lb/gal 
Specific Gravity  : 0.77 ‐ 0.82 @ @ 16 °C (60 °F) 
Safety‐Kleen Premium Solvent (Virgin and Recycled) 
Safety Data Sheet  
According To Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules And Regulations And According To The Hazardous Products Regulation  (February 11, 2015). 

02/24/2022  EN (English US)    5/8 

Solubility  : Water: Insoluble 
Partition Coefficient: N‐Octanol/Water  : No data available 
Viscosity  : No data available 
VOC content  : 100 % ; 6.4 to 6.7 LB/US gal; 770 to 800 g/l; As per 40 CFR Part 51.100(s); 
Consult with your state/local air pollution control agency and their rules 
and regulations for specific direction in your specific area. 

SECTION 10: STABILITY AND REACTIVITY 
10.1.       Reactivity:      
Reacts violently with strong oxidizers. Increased risk of fire or explosion. 
10.2.       Chemical Stability:       
Combustible liquid. May form flammable or explosive vapor‐air mixture. 
10.3.       Possibility of Hazardous Reactions:       
Hazardous polymerization will not occur. 
10.4.       Conditions to Avoid:      
Direct sunlight, extremely high or low temperatures, heat, hot surfaces, sparks, open flames, incompatible materials, and other 
ignition sources. 
10.5.       Incompatible Materials:      
Strong oxidizers. 
10.6.       Hazardous Decomposition Products:      
None expected under normal conditions of use. 
SECTION 11: TOXICOLOGICAL INFORMATION 
11.1.       Information on Toxicological Effects ‐ Product 
LD50 and LC50 Data:  
No additional information available 
Skin Corrosion/Irritation: Causes skin irritation. 

Eye Damage/Irritation: Not classified 

Respiratory or Skin Sensitization: Not classified 

Germ Cell Mutagenicity: Not classified 

Carcinogenicity: Not classified 

Specific Target Organ Toxicity (Repeated Exposure): Not classified 

Reproductive Toxicity: Not classified 

Specific Target Organ Toxicity (Single Exposure): May cause drowsiness or dizziness.  

Aspiration Hazard: May be fatal if swallowed and enters airways. 
Symptoms/Injuries After Inhalation: High concentrations may cause central nervous system depression such as dizziness, vomiting, 
numbness, drowsiness, headache, and similar narcotic symptoms. 
Symptoms/Injuries After Skin Contact: Redness, pain, swelling, itching, burning, dryness, and dermatitis. 
Symptoms/Injuries After Eye Contact: May cause slight irritation to eyes. 
Symptoms/Injuries After Ingestion: Aspiration into the lungs can occur during ingestion or vomiting and may cause lung injury. 
Chronic Symptoms: Repeated exposure may cause skin dryness or cracking. 

11.2.       Information on Toxicological Effects ‐ Ingredient(s) 
LD50 and LC50 Data:      
w 
Petroleum distillates, hydrotreated light (64742‐47‐8) 
LD50 Oral Rat > 5000 mg/kg 
LD50 Dermal Rabbit > 2000 mg/kg 
LC50 Inhalation Rat > 2.11 mg/l/4h 

Toluene (108‐88‐3) 
Acute Toxicity (Oral): Not classified 
Acute Toxicity (Dermal): Not classified 
Acute Toxicity (Inhalation): Not classified 
Safety‐Kleen Premium Solvent (Virgin and Recycled) 
Safety Data Sheet  
According To Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules And Regulations And According To The Hazardous Products Regulation  (February 11, 2015). 

02/24/2022  EN (English US)    6/8 

LD50 Oral Rat 2600 mg/kg 
LD50 Dermal Rabbit 12000 mg/kg 
LC50 Inhalation Rat 25.7 mg/l/4h 

SECTION 12: ECOLOGICAL INFORMATION 
12.1.       Toxicity   
Ecology ‐ General: Not classified. 
Safety‐Kleen Premium Solvent (Virgin and Recycled) (64742‐47‐8) 
LC50 Fish 1 > 500 mg/l 

12.2.       Persistence and Degradability   
Safety‐Kleen Premium Solvent (Virgin and Recycled) (64742‐47‐8) 
Persistence and Degradability Not established. 

12.3.       Bioaccumulative Potential    
Safety‐Kleen Premium Solvent (Virgin and Recycled) (64742‐47‐8) 
Bioaccumulative Potential Not established. 

12.4.       Mobility in Soil     
No additional information available 
12.5.       Other Adverse Effects     
Other Information: Avoid release to the environment. 
SECTION 13: DISPOSAL CONSIDERATIONS 
13.1.  Waste treatment methods 
Waste Disposal Recommendations: Dispose of contents/container in accordance with local, regional, national, territorial, provincial, 
and international regulations. 
Additional Information: Handle empty containers with care because residual vapors are flammable. 
Ecology ‐ Waste Materials: Avoid release to the environment. 
SECTION 14: TRANSPORT INFORMATION 
The shipping description(s) stated herein were prepared in accordance with certain assumptions at the time the SDS was authored, 
and can vary based on a number of variables that may or may not have been known at the time the SDS was issued. 
14.1.       In Accordance with DOT        
Proper Shipping Name  : COMBUSTIBLE LIQUID, N.O.S. (PETROLEUM DISTILLATES) 
Identification Number  : NA1993  
Packing Group  : III   

Special Provisions: 49CFR173.150. Not regulated for transport in single packages less than 119 US Gal / 450 L (bulk 
package). Non‐bulk packages are not regulated.  
14.2.       In Accordance with IMDG    Not regulated for transport 
14.3.       In Accordance with IATA      Not regulated for transport 
14.4.       In Accordance with TDG       Not regulated for transport 

SECTION 15: REGULATORY INFORMATION 
15.1.       US Federal Regulations 
Safety‐Kleen Premium Solvent (Virgin and Recycled) (64742‐47‐8) 
SARA Section 311/312 Hazard Classes Health hazard ‐ Specific target organ toxicity (single or repeated 
exposure) 
Health hazard ‐ Skin corrosion or Irritation 
Physical hazard ‐ Flammable (gases, aerosols, liquids, or solids) 
Health hazard ‐ Aspiration hazard 

Petroleum distillates, hydrotreated light (64742‐47‐8) 
Listed on the United States TSCA (Toxic Substances Control Act) inventory 
Safety‐Kleen Premium Solvent (Virgin and Recycled) 
Safety Data Sheet  
According To Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules And Regulations And According To The Hazardous Products Regulation  (February 11, 2015). 

02/24/2022  EN (English US)    7/8 

15.2.       US State Regulations 

California Proposition 65 

WARNING: This product can expose you to Benzene, p‐Dichlorobenzene, Ethylbenzene, Cumene, and Naphthalene, which 
are known to the State of California to cause cancer Benzene and Toluene which are known to the State of California to 
cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov. 
Chemical Name (CAS No.)  Carcinogenicity  Developmental 
Toxicity 
Female Reproductive 
Toxicity 
Male Reproductive 
Toxicity 
Benzene (71‐43‐2)  X  X    X 
Ethylbenzene (100‐41‐4)  X     

Naphthalene (91‐20‐3)  X     

Benzene, 1,4‐dichloro‐ (106‐46‐
7) 
X     

Toluene (108‐88‐3)    X     
p‐Dichlorobenzene (106‐46‐7)  X       
Cumene (98‐82‐8)  X       
15.3.       Canadian Regulations 

Petroleum distillates, hydrotreated light (64742‐47‐8) 
Listed on the Canadian DSL (Domestic Substances List) 

SECTION 16: OTHER INFORMATION, INCLUDING DATE OF PREPARATION OR LAST REVISION   

Date of Preparation or Latest 
Revision 
: 02/24/2022  
Other Information  : This document has been prepared in accordance with the SDS requirements of the OSHA 
Hazard Communication Standard 29 CFR 1910.1200 and Canada’s Hazardous Products 
Regulations (HPR) SOR/2015‐17. 
GHS Full Text Phrases: 

‐‐‐‐‐‐ Asp. Tox. 1  Aspiration hazard Category 1 
‐‐‐‐‐‐ Flam. Liq. 4  Flammable liquids Category 4 
‐‐‐‐‐‐ Skin Irrit. 2  Skin corrosion/irritation Category 2 
‐‐‐‐‐‐ STOT SE 3  Specific target organ toxicity — Single exposure, Category 3, Narcosis 
‐‐‐‐‐‐ H227  Combustible liquid  
‐‐‐‐‐‐ H304  May be fatal if swallowed and enters airways 
‐‐‐‐‐‐ H315  Causes skin irritation 
‐‐‐‐‐‐ H336  May cause drowsiness or dizziness 

NFPA Health Hazard : 2 ‐ Materials that, under emergency conditions, can 
cause temporary incapacitation or residual injury. 

NFPA Fire Hazard : 2 ‐ Materials that must be moderately heated or 
exposed to relatively high ambient temperatures 
before ignition can occur. 
NFPA Reactivity Hazard : 1 ‐ Materials that in themselves are normally stable 
but can become unstable at elevated temperatures 
and pressures. 

The information contained herein is correct to the best of our knowledge, information, and belief and is designed only as guidance for 
the handling, use, processing, storage, transportation, disposal, and release of the product. User assumes all risks incident to use of 
this product and shall determine the quality and suitability of the product for its use. Supplier offers no warranty, express or implied, 
whatsoever, including warranties of merchantability or fitness for a particular purpose or otherwise, and specifically disclaims any and 
all liability for incidental, consequential, or other damages arising out the use or misuse of the product. The information provided 
relates only to the specific material provided and may not be valid if used in combination with any other materials or process, unless 
specified herein. 
Safety‐Kleen Premium Solvent (Virgin and Recycled) 
Safety Data Sheet  
According To Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules And Regulations And According To The Hazardous Products Regulation  (February 11, 2015). 

02/24/2022  EN (English US)    8/8 

NA GHS SDS 2015 (Can, US)  
SAFETY DATA SHEET
SECTION 1 – IDENTIFICATION
PRODUCT NAME Omega DeScaler CLASS ACID DETERGENT CLEANER
PRODUCT USE Non hazardous acid cleaner
SUPPLIER Omegasonics PHONE NUMBER 818-359-5635
STREET ADDRESS 330 E. Easy Street, Suite A EMERGENCY PHONE [phone]
CITY, STATE SIMI Valley, CA 93065 DATE 1/01/2021
==================================================================================
SECTION 2 – HAZARD IDENTIFICATION
==================================================================================
CLASSIFICATION UN1760

SIGNAL WORD : DANGER

SYMBOLS:

HAZARD STATEMENT Causes skin burn and serious eye damage..KEEP OUT OF REACH OF CHILDREN.
May corrode aluminum and other amphoteric metals.Do not use on anodized or polished aluminum
PRECAUTION STATEMENT Wear protective goggles, gloves and clothing. Wash contaminated areas with water .
In case of contact consult a physician. Wash hands after use

GENERAL ADVICE. Follow instructions and use good hygienic practices.

EYES – In case of contact wash eyes. Remove contact lenses. Consult a physician

SKIN – Wash skin with water until irritation stops. Wash clothes before reuse. Consult a physician for severe
burns.
INHALATION – Remove victim to fresh air

INGESTATION – Drink large amounts of water to dilute cleaner. Consult physician immediately. Mucosal
Damage can occur counter indicating gastric lavage.
STORAGE – Store in original container indoors between 40 and 100 F.

DISPOSAL – Dispose of in accordance with federal, state, and local regulations. Unused product should be
Disposed of as a hazardous waste.
OTHER HAZARD None known

OTHER INFORMATION

Omega DeScaler
==================================================================================
SECTION 3 – COMPOSITION
==================================================================================
INGREDIEENT CAS NUMBER PERCENT TLV
-------------------------------------------------------------------------------------------------------------------------------------------
GLYCOLIC ACID 79-14-1 >40
--------------------------------------------------------------------------------------------------------------------------------------------

SECTION 4 – FIRST AID
==================================================================================
EYES Wash with water until irritation stops. Consult a physician
SKIN Remove contaminated clothes and wash skin with clean water until irritation subsides. In cases of severe
reaction consult a physician. Wash clothing before reuse.

INGESTION – Drink copious amounts of water to dilute cleaner. Mucosal damage may counter indicate gastric
lavage. Consult a physician. Never give water or anything to an unconscious person..

INHALATION – Move victim to fresh air and make comfortable

OTHER
==================================================================================
SECTION 5 – FIRE HAZARD
==================================================================================
NONE Water based product
-------------------------------------------------------------------------------------------------------------------------------------------
FIREFIGHTING PROCEDURE NA
-------------------------------------------------------------------------------------------------------------------------------------------
EXPLOSION/REACTIVITY DATA Nonreactive and not explosive
==================================================================================
SECTION 6 – ACCIDENTAL SPILL MEASSURES
==================================================================================
Contain spill and clean up excess liquid using a wet vac or mop. Dispose of waste in accordance with federal, state,
and local regulations. Wash area to sewer in compliance with regulations.
==================================================================================
SECTION 7 – HANDLING AND STORAGE
==================================================================================
STORAGE Store in original sealed container indoors between 40 and 100 F. Store apart from reactive products.
------------------------------------------------------------------------------------------------------------------------------------------
HANDLING Use approved hygienic and safety practices when handling product. Wear appropriate protective
goggles, gloves, and clothing. Have adequate ventilation to ensure safe usage.
==================================================================================
SECTION 8- EXPOSURE CONTROLS/PERSONAL PROTECTION
==================================================================================
EXPOSURE GUIDELINES 3 mg/m3 mist only
------------------------------------------------------------------------------------------------------------------------------------------
PERSONAL PROTECTON Wear glasses, goggles, or face shield when handling product. Chemical resistant gloves,
aprons, and boots should be worn when handling product.
-------------------------------------------------------------------------------------------------------------------------------------------
RESPIRATORY PROTECTION Not necessary with normal ventilation. In confined area provide ventilation to
prevent vapor build up.
-------------------------------------------------------------------------------------------------------------------------------------------
HYGENIC PRACTICES Wash hands after using and before eating
Omega DeScaler

SECTION 9 – PHYSICAL AND CHEMICAL PROPERTIES
==============================================================================
APPEARANCE – Clear amber liquid with a sharp detergent odor
----------------------------------------------------------------------------------------------------------------------------------
BOILING POINT 212 SPG 1.155
VAPOR PRESSURE 25 PERCENT VOLITLE >70
EVAPORATION RATE 1 (water = 1) SOLUBILITY 100%
pH 2 VAPOR DENSITY NA
FLAMMABILTY Non flammable REACTIVITY Stable
===============================================================================
SECTION 10 – STABILITY AND REACTIVITY
==================================================================================
STABILITY Stable REACTIVITY Not reactive
-------------------------------------------------------------------------------------------------------------------------------------------
HAZARDOUS POLMERIZTION Will not occur FLAMMABILTY Water based non flammable
-------------------------------------------------------------------------------------------------------------------------------------------
INCOMPATABLE MATERIALS. Strong alkalai and oxidizers. Do not mix product with other products
-------------------------------------------------------------------------------------------------------------------------------------------
SECTION 11 – TOXILOGICAL INFORMAATION
==================================================================================
SYMPTONS FOR ROUTES OF EXPOSURE
INHALATION Mucosal irritation to nose and respiratory tract.
SKIN – Irritation and redness and possible chemical burns.
EYE CONTACT – Irritation and redness
INGESTION – Chemical burns to mouth, throat and stomach. Pain, nausea, vomiting, and diarrhea
==================================================================================
SECTION 12 – ECOLOGICAL INFORMATION
==================================================================================
Product is water soluble, biodegradable and non toxic.
==================================================================================
SECTION 13 – DISPOSAL CONSIDERATIONS
==================================================================================
Neutralize then sewer or landfill in accordance with local, state, and federal regulations. Unused product is
considered a hazardous waste.
==================================================================================
SECTION 14 – TRANSPORTATION
==================================================================================
Ship in DOT approved containers using approved transportation means.
==================================================================================
SECION 15 – REGULATORY INFORMATION
==================================================================================
DOT: UN1760 CORROSIVE LIQUID NOS(GLYCOLIC ACID)8, PGIII
==================================================================================
SECTION 16 – OTHER INFFORMATION
==============================================================================
NFPA Health 2 Flammability 0 Instability 0 Other
---------------------------------------------------------------------------------------------------------------------------------
GEENERAL DISCLAIMER Information provided is correct to the best of our knowledge at current time. Since use
of the product is out of the control of the supplier no warranty for the suitability and use of the product in an application
is given or implied.

Omega DeScaler

Swanson Industries EHNS Partners, LLC
Notice of Intent to Modify Approval Order June 2024
APPENDIX H: EMISSIONS CALCULATIONS

Appendix H - Emissions Calculations
Parts Washer VOC and HAP Emissions
Total Number of Parts Washer Units:6
AP-42 Table 4.6-2, Cold Cleaning Entire Unit Solvent Loss:0.33 tons/year/unit
660 pounds/year/unit
0.08 pounds/hour1/unit
Total Potential-To-Emit from Parts Washers:1.98 tons/year
3960 pounds/year
0.45 pounds/hour1
1 Assumes 8,760 hours per year
Ultrasonic Cleaner Potential Emissions:1 gallon/month of cleaner
115.45 pounds/year of cleaner
70%VOC Content
80.82 VOC pounds/year
0.04 VOC tons/year
Table H-1: Proposed Permitted Emission Limits for VOC and Speciated HAPs
Solvent Content2 Maximum Annual
Emissions
Maximum Annual
Emissions
(wt%)(lbs/year)(tons/year)
100%4041 2.02
100%3960 1.98
100%3592 1.80
100%3960 1.98
100%3960 1.98
100%3960 1.98
100%3960 1.98
3 Benzene emissions have been capped to remain below carcinogenic emission threshold values
Toluene (HAP)
Cumene (HAP)
Pollutant
Volatile Organic Compounds
Naphthalene (HAP)
Ethyl Benzene (HAP)
Benzene (HAP)3
Total HAPs
2 The Safety Kleen SDS indicates the presence of benzene, ethyl benzene, naphthalene,
toluene, and cumene but does not speciate concentration of each HAP. Safety Kleen
does not have additional information regarding component concentrations. Therefore,
the conservative assumption that the solvent contains 100% of each HAP has been
employed in the absence of conclusive data.
Swanson Industries
Notice of Intent to Modify Approval Order
EHNS Partners, LLC
June 2024
Appendix H - Emissions Calculations
Table H-2: Facility-Wide Permitted Emission Limits
Current Pemitted
Emissions (TPY)
Change
(TPY)
Proposed
Emissions (TPY)
687.00 0 687.00
0.71 0 0.71
1.74 0 1.74
4.72 0 4.72
0.72 0 0.72
0.08 0 0.08
4.80 2.02 6.82
Current Pemitted
Emissions (TPY)
Change
(TPY)
Proposed
Emissions (TPY)
0.02 0 0.02
0.02 0 0.02
0.02 0 0.02
0.14 2.02 2.16
3.15 2.02 5.17
--1.80 1.80
--2.02 2.02
--2.02 2.02
--2.02 2.02
Current Pemitted
Emissions (TPY)
Change
(TPY)
Proposed
Emissions (TPY)
3.34 1.98 5.32
1 Benzene emissions have been capped to remain below carcinogenic emission threshold values
Total HAPs
Xylenes
Benzene1
Ethyl Benzene
Naphthalene
Cumene
Total Hazardous Air
Pollutants
Chromium Compounds
Manganese
Nickel
Toluene
Particulate Matter - PM2.5
Hazardous Air Pollutants
Nitrogen Oxides
Carbon Monoxide
CO2 Equivalent
Criteria Pollutant
Volatile Organic Compounds
Sulfur Dioxide
Particulate Matter - PM10
Swanson Industries
Notice of Intent to Modify Approval Order
EHNS Partners, LLC
June 2024

PO Box 843
Portland, Maine 04104
Phone: [phone]

Donaldson Company, Inc.
Industrial Air Filtration
1400 West 94th Street
Bloomington, MN
55431-2370
Mailing Address:
P.O. Box 1299
Minneapolis, MN
55440-1299
U.S.A.
Tel [phone]
Fax [phone]
www.Donaldson.com
www.donaldsontorit.com

Thursday April 11th, 2024

To Whom It May Concern;

SUBJECT: Anticipated Differential Pressure Operating Range

The Photohelic or Magnehelic Gauge (or digital controller) reads the differential pressure across
the filters of the Donaldson Torit dust collector. Installation requires tubing from the high side of
the gage, to connect to the dirty air plenum (where the filters are housed) and the low side of
the gage to the clean air plenum. The gauges do not indicate the efficiency of the filters- instead
they provide a reading of how much dust is on the media by measuring the resistance of the air
stream.

Pressure drop on new (unseasoned) filters will be in a range of 0.5” to 2.0”, depending on
airflow, loading, and dust type. This is a temporary condition however, which will change rapidly
after the filters enter service.

As the filters develop a dust cake, the pressure drop will increase. Final pressure drop toward the
end of a filter’s useful life will be in the range of 4.0”-6.0”. We typically expect to see stabilized
pressure drops on seasoned filters in the range of 2-4 inches w.g. during the greater portion of
the life of a set of filters.

We typically recommend filter replacement when filters reach 5.0” to 6.0” pressure drop and
can no longer be pulsed down below the 4.0” range.
Hopefully this information will be helpful, but feel free to give me a call if I can be of further
assistance.

Regards,
Carolyn

Carolyn Wilkerson | Application Engineer
Donaldson Torit - Industrial Air Filtration
Direct Phone [phone] | 800-365-1331
[e-mail] | www.donaldson.com

PERMIT MODIFICATION APPLICATION
UPDATED FROM JANUARY 2024 SUBMITTAL
Permit Number DAQE-IN157040002-22

October 2024
EHN S
PARTNERS

Swanson Industries i EHNS Partners, LLC
Notice of Intent to Modify Approval Order October 2024
TABLE OF CONTENTS
SECTION PAGE NO.

1 INTRODUCTION ............................................................................................... 1-1
1.1 Modification Description ................................................................................................... 1-1
1.2 Application Contents ......................................................................................................... 1-1
2 SITE PLAN ..................................................................................................... 2-1
3 BACT ANALYSIS .............................................................................................. 3-1
3.1 Parts Washer BACT .......................................................................................................... 3-1
4 EMISSION CALCULATION DOCUMENTATION ............................................................. 4-1
4.1 Parts Washer Emissions ................................................................................................... 4-1

APPENDICES
Appendix A: UDAQ Form 1 – Notice of Intent Checklist
Appendix B: UDAQ Form 2 – Company Information
Appendix C: UDAQ Form 4 – Welding Baghouse Modification
Appendix D: UDAQ Form 4 – Solvent Cleaner Process Data Appendix E: UDAQ Form 21 – Solvent Cleaner Detail Form Appendix F: UDAQ Form 5 – Emissions Information Appendix G: Parts Washer Solvent SDS Appendix H: Emissions Calculations

Swanson Industries 1-1 EHNS Partners, LLC
Notice of Intent to Modify Approval Order October 2024
1 INTRODUCTION
Swanson Industries, Inc. (Swanson) located at 610 Industrial Road in Helper, Utah operates a mining
equipment repair and refurbishing facility with SIC code 3053. Swanson's equipment repairs and
maintenance processes take place in two shop buildings at the site: the rebuild shop and the jack shop. The
onsite activities include abrasive blasting and grinding, painting and coating, and welding and cutting
including a laser cladding process. Natural gas combustion is used to operate space and water heaters for
the facility. The facility currently operates under a Utah Department of Environmental Quality (DEQ) Division
of Air Quality (DAQ) air Approval Order Number DAQE-IN157040002-22.
Swanson is located in Carbon County which is currently an attainment area. Swanson is a minor source of
air emissions and is subject to 40 C.F.R. Part 63, Subpart XXXXXX: National Emission Standards for
Hazardous Air Pollutants Area Source Standards for Nine Metal Fabrication and Finishing Source Categories.
1.1 Modification Description
On August 10, 2023, DAQ conducted an inspection of the Swanson facility and found the differential pressure
reading range on the welding baghouse gauge to be different than the permitted range of three (3) to eight
(8) inches of water column (inH2O) which is established in Approval Order Condition II.B.4.c. The baghouse
differential pressure gauge acceptable range is zero to four inH2O. Swanson received a Letter of Warning
for the discrepancy and was instructed to submit the Notice of Intent to Modify the Approval Order to reflect
the correct operating range. This modification will not result in any change in the welding emissions or other
Approval Order conditions.
As part of this modification application, Swanson is requesting inclusion of emissions from six solvent parts
washers and an ultrasonic cleaner in the facility’s volatile organic compound (VOC) and hazardous air
pollutant (HAP) emission limits from evaporative sources established in Approval Order Condition II.B.2.b.
The condition states that the facility may not emit more than 4.77 tons of VOCs, 3.15 tons of xylene, and
0.14 tons of toluene from evaporative sources including painting, printing, coating, and cleaning. The original
Notice of Intent Application did not include VOC or HAP emissions from the solvent usage in the parts
washers in the calculation of facility’s evaporative source potential to emit. The original application emissions
calculations included only paint and coating usage; therefore, the emission limits are too stringent when
accounting for cleaning evaporative emissions.
The proposed modifications will not exceed the emissions thresholds established in UDEQ Regulation
Section R307-410-4 Table 1, therefore the requirement to conduct air quality modeling does not apply.
1.2 Application Contents
The required DAQ application forms are provided in Appendixes A – F. As required, a Site Plan is provided
in Section 2. A Best Available Control Technology (BACT) analysis for new and modified equipment is
provided in Section 3. Emissions calculation documentation for the parts washers and specifications are
provided in Section 4.

Swanson Industries 2-1 EHNS Partners, LLC
Notice of Intent to Modify Approval Order October 2024
2 SITE PLAN

Swanson Industries 3-1 EHNS Partners, LLC
Notice of Intent to Modify Approval Order October 2024
3 BACT ANALYSIS
Swanson must demonstrate that each emissions unit modified or constructed as part of this application will
receive Best Available Control Technology (BACT). BACT means an emission limitation based on the
maximum degree of reduction which is achievable for each pollutant considering energy, environmental,
and economic impacts and other costs. BACT must be applied to all regulated pollutants from new and
modified emission units, including fugitive as well as stack emissions. There are five key steps to a “top-
down” BACT approach:
1. Identify all control technologies potentially applicable to the processes.
2. Eliminate technically infeasible options.
3. Rank remaining control technologies by control effectiveness.
4. Evaluate technically feasible control alternatives (energy, environmental, and economic impacts)
including toxic and hazardous pollutant impacts, if a control technology less effective than the top
option is proposed as BACT.
5. Select BACT in consideration of energy, environmental, and economic impacts.
An evaluation of potentially applicable emission control technologies has been conducted utilizing technical
literature, recent EPA/state/local air pollution control requirements, the U.S. EPA Control Technology
Database, and a search of the Reasonably Available Control Technology (RACT)/BACT/Lowest Achievable
Emission Rate (LAER) Clearinghouse (RBLC) published on the EPA Clean Air Technology Center.
Because the modification to the welding baghouse pressure differential gauge acceptable range will not
change the emissions associated with the welding process or control efficiency of the baghouse, a BACT
analysis has not been completed.
3.1 Parts Washer BACT
Cold (unheated) solvent cleaners have the potential to emit Volatile Organic Compounds (VOCs) and
Hazardous Air Pollutants (HAPs) during normal use from evaporative losses of the solvent in use. Potential
emissions minimization techniques include: (1) using a low-VOC and low-HAP content solvent, (2) using
parts washer design to minimize emissions, and (3) using proper work practices to minimize solvent drag
out and evaporation. Add-on pollution control for small reservoir parts washers is not technically or
economically feasible.
Due to the parts cleaning demands at Swanson, the use of a lower VOC solvent is not a technically feasible
option. However, Swanson uses a solvent with a vapor pressure of 0.5 mm Hg at room temperature and
uses a parts washers with rigid tight-fitting lids. The units remain closed when not in use to minimize
evaporative losses. Swanson proposes this as BACT for the parts washers.

Swanson Industries 4-1 EHNS Partners, LLC
Notice of Intent to Modify Approval Order October 2024
4 EMISSION CALCULATION DOCUMENTATION
There is no anticipated change in emissions from the welding operation or the baghouse control equipment
as a result of the pressure differential gauge acceptable range modification requested. Therefore, the
emissions from this process will remain identical to those identified as part of the original NOI Application.
4.1 Parts Washers Emissions
Swans operates six Safety Kleen parts washers that are maintained by a third-party contractor. The parts
washers dispense solvent through a metal brush or small nozzle via non-pressurizes flow from a small
electric pump. The dispensed solvent then drains into a solvent storage reservoir. Specifications for each
parts washer are summarized in the table below.
Table 4-1: Parts Washers Specifications
Parts Washer Specifications Model 30 Model 44 Model 250
(2 total) (2 total) (2 total)
Freeboard:
a. Distance from solvent surface to top
edge of degreaser (inches)
b. Width at solvent surface (inches)
c. Freeboard ratio
Remote reservoir Remote reservoir Remote reservoir
Tank Dimensions
a. Length (inches)
b. Width (inches)
c. Height (inches)
d. Tank Capacity (gallons)

33.25 inches
22.25 inches
8 inches
15 gallons
45.5 inches
21.5 inches
10.75 inches
32 gallons
36 inches
27 inches
inches
25 gallons
The parts washers have the potential to emit Volatile Organic Compounds (VOCs) and Hazardous Air
Pollutants (HAPs) during normal use from evaporative losses of the solvent in use. Actual emissions from
the units can be calculated on a mass balance basis by monitoring and recording the amount of solvent
added to the parts washers and subtracting any solvent that is removed from the parts washers and
disposed of as waste.
Over the past six years, Swanson has consumed ~250 pounds of solvent per year, as estimated by
calculating the total amount of new solvent added to the units minus the amount of solvent disposed of as
waste. It can conservatively be assumed that this consumption is equivalent to the evaporative losses and
therefore the fugitive VOC and HAP emissions from the part washer (equivalent to 0.125 tons per year).
AP-42 Section 4.6, Table 4.6-2 establishes a cold cleaner annual emissions rate of 0.33 tons per year, per
unit, equivalent to 1.98 tons per year for all six parts washers. While it is unlikely Swanson will achieve this
magnitude of solvent usage, Swanson is anticipating growth in product demand and usage of the parts

Swanson Industries 4-2 EHNS Partners, LLC
Notice of Intent to Modify Approval Order October 2024
washer the future. Therefore, the facility is requesting to comply with a HAP and VOC emission limit of 1.98
tons per year from the parts washer, equivalent to ~566 gallons of solvent consumption per year. For
benzene, the facility is proposing to comply with a limit of 0.83 tons per year to remain below carcinogenic
emission threshold values.
In addition to the solvent parts washers, Swanson operates one Super Pro Ultrasonic Cleaner. The ultrasonic
cleaner uses a non-hazardous acid cleaner called Omega DeScaler which has a VOC content of 70% and
contains no HAPs (SDS supplied in Appendix G). Swanson uses one gallon of Omega DeScaler each month
prior to replacement. Conservatively assuming 100% of the VOC is emitted via evaporative loses, the
ultrasonic cleaner has the potential to emit 0.04 tons per year of VOCs.
Based on the density, VOC, and HAP content information contained in the solvent SDS (supplied as Appendix
G), this is equivalent to the emissions rates summarized in the table below.
Table 4-2: Proposed Permitted Emission Limits
Pollutant Solvent Content1
(wt%)
Maximum Annual
Emissions
(lbs/year)
Maximum Annual
Emissions
(tons/year)
Volatile Organic
Compounds (VOCs) 100% 4041 2.02
Total HAPs 100% 39601 1.981
Benzene (HAP)2 100% 1664 0.83
Ethyl Benzene (HAP) 100% 3960 1.98
Naphthalene (HAP) 100% 3960 1.98
Toluene (HAP) 100% 3960 1.98
Cumene (HAP) 100% 3960 1.98
1 The Safety Kleen SDS indicates the presence of benzene, ethyl benzene, naphthalene, toluene, and cumene
but does not speciate concentration of each HAP. Safety Kleen does not have additional information
regarding component concentrations. Therefore, the conservative assumption that the solvent contains
100% of each HAP has been employed in the absence of conclusive data.
2 Benzene emissions have been capped to remain below carcinogenic emission threshold values

Swanson Industries EHNS Partners, LLC
Notice of Intent to Modify Approval Order October 2024
APPENDIX A: UDAQ FORM 1 – NOTICE OF INTENT CHECKLIST
Form 1 Date __________________
Notice of Intent (NOI) Application Checklist
Company __________________
Utah Division of Air Quality
New Source Review Section
Source Identification Information [R307-401-5]
1. Company name, mailing address, physical address and telephone number 
2. Company contact (Name, mailing address, and telephone number)
3.Name and contact of person submitting NOI application (if different than 2) 4.Source Universal Transverse Mercator (UTM) coordinates 
5. Source Standard Industrial Classification (SIC) code 
6.Area designation (attainment, maintenance, or nonattainment)
7.Federal/State requirement applicability (NAAQS, NSPS, MACT, SIP, etc.)
8.Source size determination (Major, Minor, PSD) 9. Current Approval Order(s) and/or Title V Permit numbers 
NOI Application Information: [R307-401]










N/A 
N/A 
A.Air quality analysis (air model, met data, background data, source impact analysis) N/A 
1.Detailed description of the project and source process
2.Discussion of fuels, raw materials, and products consumed/produced3.Description of equipment used in the process and operating schedule
4.Description of changes to the process, production rates, etc.
5.Site plan of source with building dimensions, stack parameters, etc.
6.Best Available Control Technology (BACT) Analysis [R307-401-8]A.BACT analysis for all new and modified equipment
7.Emissions Related Information: [R307-401-2(b)]
A.Emission calculations for each new/modified unit and site-wide
(Include PM10, PM2.5, NOx, SO2, CO, VOCs, HAPs, and GHGs)B.References/assumptions, SDS, for each calculation and pollutant
C.All speciated HAP emissions (list in lbs/hr)
8.Emissions Impact Analysis – Approved Modeling Protocol [R307-410]
A.Composition and physical characteristics of effluent(emission rates, temperature, volume, pollutant types and concentrations)
9.Nonattainment/Maintenance Areas – Major NSR/Minor (offsetting only) [R307-403]
A.NAAQS demonstration, Lowest Achievable Emission Rate, Offset requirements
B.Alternative site analysis, Major source ownership compliance certification
10.Major Sources in Attainment or Unclassified Areas (PSD) [R307-405, R307-406]
B.Visibility impact analysis, Class I area impact
11.Signature on Application
N/A 
Note: The Division of Air Quality will not accept documents containing confidential information or data.
Documents containing confidential information will be returned to the Source submitting the application.

Swanson Industries EHNS Partners, LLC
Notice of Intent to Modify Approval Order October 2024

APPENDIX B: UDAQ FORM 2 – COMPANY INFORMATION
Form 2 Date June 2024
Company InformationlNotice of Intent (NOl)
Utah Division of Air Quality
New Source Review Section
Application for:Initial Approval Order [~Approval Order Modification
General Owner and Source Information
I -Company name and mailing address:2.Company*contact for environmental matters:
Swanson Industries,Inc.Ashlyn Harlan
610 Industrial Road Phone no.:[phone]
Helper,Utah 84526 Email:[e-mail]
Phone No.:[phone]
Fax No.:()~infom,auon can be provided In a coverletter
3.Source name and physical address (if different from 4.Source Property Universal Transverse Mercator
above):Same as above coordinates (UTM),including System and Datum:
UTM:12 Datum NAD83
X:512,029m
Y:4,392,111 mPhoneno.:
Faxno.:
5.The Source is located in:~thon County 6.Standard Industrial Classification Code (SIC)
105&
7.If request for modification,A0#to be modified:DAQE ii 1N15704000Z.22 DATED:
8.Brief (50 words or less)description of process.
Modification of baghouse differential pressure range to reflect manfacturer’s recommended operating
range and inclusion of parts washers and associated emissions.
Electronic NOl
9.A complete and accurate electronic NOl submitted to DAQ Permitting Mangers Jon Black (jlblack©utah.gov)or Alan
Humpherys (ahumpherys~utah.gov)can expedite review process.Please mark application type.
Hard Copy Submittal Electronic Copy Submittal
AuthorizationlSignature
I hereby certify that the information and data submitted in and with this application is completely true,accurate and
complete,based on reasonable inauiry made by me an~Jg..tb~bes~of m knowledge and belief.
signature~r’\._.c~~~-çL ~~r?iZc ~C ED
Telephone Number:Date:
~Email:Name (Type or pnnt)
AIR QUALITY
Both
1 of I

Swanson Industries EHNS Partners, LLC
Notice of Intent to Modify Approval Order October 2024

APPENDIX C: UDAQ FORM 4 – WELDING BAGHOUSE MODIFICATION
Page 1 of 1
Form 4 Company____________________________
Project Information Site ______________________________

Utah Division of Air Quality
New Source Review Section
Process Data - For Modification/Amendment ONLY
1. Permit Number_______________________________
If submitting a new permit, then use Form 3
Requested Changes
2. Name of process to be modified/added:
_______________________________

End product of this process:

_______________________________

3. Permit Change Type: New Increase*
Equipment
Process

Condition Change ____________________
Other ______________________________
Other ______________________________

Other ______________________________

4. Does new emission unit affect existing
permitted process limits?

Yes No
5. Condition(s) Changing:

6. Description of Permit/Process Change**

7. New or modified materials and quantities used in process. **
Material Quantity Annually

8. New or modified process emitting units **
Emitting Unit(s) Capacity(s) Manufacture Date(s)

*If the permit being modified does not include CO2e or PM2.5, the emissions need to be calculated and submitted to DAQ, which may result in an
emissions increase and a public comment period.
**If additional space is required, please generate a document to accommodate and attach to form.

Swanson Industries EHNS Partners, LLC
Notice of Intent to Modify Approval Order October 2024

APPENDIX D: UDAQ FORM 4 – SOLVENT CLEANER PROCESS DATA
Page 1 of 1
Form 4 Company____________________________
Project Information Site ______________________________

Utah Division of Air Quality
New Source Review Section
Process Data - For Modification/Amendment ONLY
1. Permit Number_______________________________
If submitting a new permit, then use Form 3
Requested Changes
2. Name of process to be modified/added:
_______________________________

End product of this process:

_______________________________

3. Permit Change Type: New Increase*
Equipment
Process

Condition Change ____________________
Other ______________________________
Other ______________________________

Other ______________________________

4. Does new emission unit affect existing
permitted process limits?

Yes No
5. Condition(s) Changing:

6. Description of Permit/Process Change**

7. New or modified materials and quantities used in process. **
Material Quantity Annually

8. New or modified process emitting units **
Emitting Unit(s) Capacity(s) Manufacture Date(s)

*If the permit being modified does not include CO2e or PM2.5, the emissions need to be calculated and submitted to DAQ, which may result in an
emissions increase and a public comment period.
**If additional space is required, please generate a document to accommodate and attach to form.

Swanson Industries EHNS Partners, LLC
Notice of Intent to Modify Approval Order October 2024

APPENDIX E: UDAQ FORM 21 – SOLVENT CLEANER DETAIL FORM
Utah Division of Air Quality
New Source Review Section Company: _______________________ Site/Source: ______________________
Form 21 Date: ____________________________
Solvent Metal Cleaning (Degreasers)

Process Information
1. Operating schedule:

______ hrs/day

______ days/wk

______ weeks/year
2. Degreaser
Manufacturer:_________________
Model no.:____________________
Type:
□ Conveyorized □ Cold solvent
□ Open top vapor □ Batch
□ Other_______________________
3. Decription of metal parts or products
cleaned:
_______________________________
Average number of parts cleaned/hour:
_______________________________
Maximum number cleaned per hour:
_______________________________
4. Solvent usage:
Type: ____________________________
Gallons used during year: ____________
Vapor pressure: ______ (Psia @ 100 OF)
5. Solvent is: □ Sprayed □ Heated, temperature ____ OF
□ Agitated, by: □ Use of pump □ Compressed air
□ Vertical motion □ Ultrasonics
□ Other _______________________
6. Amount of solvent waste disposed of
throughout the year: _______ gallons
If known, solvent content in waste
___________________ % by volume
Method of disposal: ________________
________________________________
7. Freeboard:
a. Distance from solvent surface to top edge of degreaser
_______ inches
b. Width (not length) of tank at solvent surface _______ inches
c. Freeboard ratio, (a) above divided by (b) above
______________
8. Furnish manufacturer's Material Safety Data Sheets for all chemicals used in process.
Cold Cleaner Information
9. Equipped with cover: □ yes □ no
Easily operated with
one hand? □ yes □ no
10. Tank dimensions: Length: ________
Width: ________ Height: ________
Tank capacity: ______ gals of solvent
11. Method of draining parts:
____________________
____________________
12. Cold Cleaner has: □ Water cover □ Refrigerated chiller, operating temperature: _______ OF
□ Carbon adsorption □ Other control system: ____________________________________
□ None of the above
13. Ventilation: □ Carbon adsorption system (submit form 5)
□ None □ Other (describe) ______________________________________________

Page 1 of 3

Page 2 of 3
Form 21 – Solvent Metal Cleaning (Degreasers)
(Continued)

Open Top Vapor Degreaser and Conveyorized Degreaser Information
14. Dimensions of top opening:

Length: ______________

Width: _______________

15. Cover: □ yes □ no
Powered: □ yes □ no
Fixed spray
nozzles: □ yes □ no

16. Safety switches:

□ Condenser flow switch and thermostat which shuts off the sump heat if the
condenser coolant is either not circulating or too warm.
□ Device, other than a condenser flow switch and thermostat, which shuts off the
sump heat if the condenser coolant is either not circulating or too warm
(describe):_____________________________________________________
□ Spray safety switch which shuts off the spray pump if the vapor level drops
below any fixed spray nozzle.
□ Vapor level control thermostat which shuts off the sump heat when the vapor
level rises too high.
□ Device, other than a vapor level control thermostat, which shuts off the sump
heat when the vapor level rises too high
(describe):_____________________________________________________
______________________________________________________________
□ None of the above.

17. Indicate the type of pollution controls that open top vapor degreaser has (carbon filter, condenser, etc.):
_________________________________________________________________________________________
Conveyorized Degreaser Information
18. Type of degreaser system:
□ Cold □ Vapor
19. Operating temperature of solvent?
______________
20. Downtime covers:
□ yes □ no
21. Air/vapor interface is: ____________________sq. ft. (attach calculations )
22. Degreaser Controls:
□ Refrigerated freeboard
chiller.
□ Refrigerated condenser
coils.
□ Carbon adsorption.
□ Other control system
excluding condenser coils
and freeboard water
jacket, which reduces
solvent emission
(describe system and %
control efficiency).
□ None of the above.

23. Safety Switches:
□ Condenser flow switch and thermostat which shuts off the sump heat if the
condenser coolant is either not circulating or too warm.
□ Device, other than a condenser flow switch and thermostat, which shuts
off the sump heat if the condenser coolant is either not circulating or too
warm
(describe):________________________________________________
□ Spray safety switch which shuts off the spray pump if the vapor level drops
below any fixed spray nozzle.
□ Vapor level control thermostat which shuts off the sump heat when the
vapor level rises too high.
□ Device, other than a vapor level control thermostat, which shuts off the
sump heat when the vapor level rises too high (describe):
_________________________________________________________
_________________________________________________________
□ None of the above.
24. Conveyorized degreaser is equipped with the following equipment for preventing cleaned parts from carrying out
solvent liquid or vapor: □ None □ Drying tunnel □ Rotating basket □ Other

Page 3 of 3
Form 21 – Solvent Metal Cleaning (Degreasers)
(Continued)

Emissions Calculations (PTE)
25. Calculated emissions for each tank
VOC _________Lbs/hr_____ Tons/yr
HAPs_________Lbs/hr (speciate)______Tons/yr (speciate)
Specify the method of calculations. Also, provide manufacture’s Material Safety Data Sheets (MSDS) for
products being used. Submit calculations as an appendix.

Instructions

NOTE: 1. Submit this form in conjunction with Form 1 and Form 2.
2. Call the Division of Air Quality (DAQ) at [phone] if you have problems or questions in filling out
this form. Ask to speak with a New Source Review engineer. We will be glad to help!

1. Indicate the operating schedule of the degreaser.
2. Indicate the manufacturer, model number, serial number and type of degreaser.
3. Indicate the type of parts that will be cleaned in the degreaser (attach details) and the average and maximum
number of parts cleaner per hour.
4. Indicate the type, quantity, and vapor pressure of the solvent used in the degreaser.
5. Indicate whether the solvent is sprayed, heated, agitated, and to what temperature. Indicate if and how solvent is
agitated.
6. Indicate the amount and way waste solvent is disposed.
7. Indicate the calculations for freebroad ratio.
8. Supply the manufacturer’s material safety data sheets of any chemicals used with this application.
9. Indicate whether the degreaser is covered and if that cover is easily operated with one hand.
10. Supply the tank dimensions and capacity.
11. Describe the method of draining the degreased parts.
12. Indicate if any type of controls is used with the system and what they are.
13. Describe the carbon adsorption system if applicable.
14. Give dimensions of top opening.
15. Indicate if degreaser is equipped with cover and spray nozzles.
16. Indicate the types of safety switches used on the degreaser.
17. Indicate the type of controls used on the open top vapor degreaser.
18. Tell whether the degreaser uses a cold or a vapor system.
19. Give the operating temperature of the solvent.
20. Indicate whether the conveyorized degreaser has downtime covers.
21. Provide calculations showing the air/vapor interface. This is estimated using the dimensions of the open portion of
the tank at the condenser level.
22. Indicate the degreaser controls.
23. Indicate the types of safety switches used on the degreaser.
24. Indicate the type of equipment used to prevent carry out emissions.
25. Supply calculations for all criteria pollutants and HAPs (speciate, please). Use AP-42 or manufacturers’ data to
complete your calculations.

f:\aq\ENGINEER\GENERIC\Forms 2010\Form21 Degreasers.doc
Revised 12/20/10

Swanson Industries EHNS Partners, LLC
Notice of Intent to Modify Approval Order October 2024

APPENDIX F: UDAQ FORM 5 – EMISSIONS INFORMATION
Page 1 of 1
Company___________________________
Site _____________________________
Form 5
Emissions Information
Criteria/GHGs/ HAP’s
Utah Division of Air Quality
New Source Review Section
Potential to Emit* Criteria Pollutants & GHGs
Criteria Pollutants Permitted Emissions
(tons/yr)
Emissions Increases
(tons/yr)
Proposed Emissions
(tons/yr)
PM10 Total
PM10 Fugitive
PM2.5
NOx
SO2
CO
VOC
VOC Fugitive
NH3
Greenhouse Gases CO2e CO2e CO2e
CO2
CH4
N2O
HFCs
PFCs
SF6
Total CO2e
*Potential to emit to include pollution control equipment as defined by R307-401-2.
Hazardous Air Pollutants** (**Defined in Section 112(b) of the Clean Air Act )
Hazardous Air
Pollutant***
Permitted Emissions
(tons/yr)
Emission Increase
(tons/yr)
Proposed
Emission (tons/yr)
Emission Increase
(lbs/hr)
Total HAP
*** Use additional sheets for pollutants if needed

Swanson Industries EHNS Partners, LLC
Notice of Intent to Modify Approval Order October 2024

APPENDIX G: PARTS WASHER SOLVENT SDS

Safety‐Kleen Premium Solvent (Virgin and Recycled) 
Safety Data Sheet          
According To Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules And Regulations And According To The Hazardous Products Regulation  (February 11, 2015). 
Revision Date: 02/24/2022 Date of Issue:  01/26/1995 Supersedes Date: 10/29/2019 Version: 1.0 

02/24/2022  EN (English US)    1/8 

SECTION 1: IDENTIFICATION                                           
1.1.       Product Identifier 
Product Form: Substance 
Product Name: Safety‐Kleen Premium Solvent (Virgin and Recycled) 
CAS‐No.: 64742‐47‐8 
Product Code: 82658 
Synonyms: Safety‐Kleen Premium Gold Solvent; Safety‐Kleen Continued Use Product Solvent (CUP); High Flash Degreasing Solvent; 
Parts Washer Solvent; Petroleum Distillates; Petroleum Naphtha; Naphtha, Solvent; Mineral Spirits 
SDS No.: 82658 
1.2.       Intended Use of the Product    
Cleaning and degreasing metal parts. For professional use only. 
1.3.       Name, Address, and Telephone of the Responsible Party 

Manufacturer    
Safety‐Kleen Systems, Inc. 
42 Longwater Drive 
Norwell, MA 02061‐9149  
1‐800‐669‐5740  
www.safety‐kleen.com 

Supplier in Canada 
Safety‐Kleen Canada, Inc. 
25 Regan Road 
Brampton, Ontario L7A 1B2 
Canada 
1.4.       Emergency Telephone Number    
Emergency Number  : 1‐800‐468‐1760 
SECTION 2: HAZARDS IDENTIFICATION   
2.1.       Classification of the Substance or Mixture 
GHS‐US/CA Classification 

Flam. Liq. 4  H227  
Skin Irrit. 2  H315  
STOT SE 3  H336  
Asp. Tox. 1  H304  

Full text of hazard classes and H‐statements : see section 16 
2.2.       Label Elements 
GHS‐US/CA Labeling  
Hazard Pictograms (GHS‐US/CA)  : 

GHS07  
GHS08 

Signal Word (GHS‐US/CA)  : Danger 
Hazard Statements (GHS‐US/CA)  : H227 ‐ Combustible liquid. 
H304 ‐ May be fatal if swallowed and enters airways. 
H315 ‐ Causes skin irritation. 
H336 ‐ May cause drowsiness or dizziness. 
Precautionary Statements (GHS‐US/CA)  : P210 ‐ Keep away from heat, hot surfaces, sparks, open flames and other ignition 
sources. No smoking. 
P261 ‐ Avoid breathing vapors, mist, or spray. 
P264 ‐ Wash hands, forearms, and other exposed areas thoroughly after handling. 
P271 ‐ Use only outdoors or in a well‐ventilated area. 
P280 ‐ Wear protective gloves, protective clothing, and eye protection. 
P301+P310 ‐ IF SWALLOWED: Immediately call a POISON CENTER or doctor. 
P302+P352 ‐ IF ON SKIN: Wash with plenty of water. 
P304+P340 ‐ IF INHALED: Remove person to fresh air and keep comfortable for 
Safety‐Kleen Premium Solvent (Virgin and Recycled) 
Safety Data Sheet  
According To Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules And Regulations And According To The Hazardous Products Regulation  (February 11, 2015). 

02/24/2022  EN (English US)    2/8 

breathing. 
P312 ‐ Call a POISON CENTER or doctor if you feel unwell. 
P321 ‐ Specific treatment (see section 4 on this SDS). 
P331 ‐ Do NOT induce vomiting. 
P332+P313 ‐ If skin irritation occurs: Get medical advice/attention. 
P362+P364 ‐ Take off contaminated clothing and wash it before reuse. 
P370+P378 ‐ In case of fire: Use appropriate media (see section 5) to extinguish. 
403+P233 ‐ Store in a well‐ventilated place. Keep container tightly closed. 
P405 ‐ Store locked up. 
P501 ‐ Dispose of contents/container in accordance with local, regional, national, and 
international regulations. 

2.3.       Other Hazards  
Exposure may aggravate pre‐existing eye, skin, or respiratory conditions. 
2.4.       Unknown Acute Toxicity (GHS‐US/CA)    
No additional information available 
SECTION 3: COMPOSITION/INFORMATION ON INGREDIENTS   
3.1.  Substance 
Name  Synonyms  Product Identifier  % * 
Petroleum 
distillates, 
hydrotreated 
light 
Distillates (petroleum), hydrotreated light / Distillates, petroleum, hydrotreated 
light / Hydrotreated light distillate / Kerosene, hydrotreated / Petroleum 
distillates, hydrotreated light (A complex combination of hydrocarbons obtained 
by treating a petroleum fraction with hydrogen in the presence of a catalyst.  It 
consists of hydrocarbons having carbon numbers predominantly in the range of 
C9‐16 and boiling in the range of approximately 150‐290°C.)  
(CAS‐No.) 64742‐47‐8  100 
3.2.  Mixture 
Not applicable 
*Percentages are listed in weight by weight percentage (w/w%) for liquid and solid ingredients. Gas ingredients are listed in volume 
by volume percentage (v/v%). 
SECTION 4: FIRST AID MEASURES   
4.1.       Description of First‐aid Measures 
General: Never give anything by mouth to an unconscious person. If you feel unwell, seek medical advice (show the label where 
possible). 
Inhalation: When symptoms occur: go into open air and ventilate suspected area. Obtain medical attention if breathing difficulty 
persists. 
Skin Contact: Immediately remove contaminated clothing. Immediately drench affected area with water for at least 15 minutes. 
Obtain medical attention if irritation develops or persists. 
Eye Contact: Rinse cautiously with water for at least 15 minutes. Remove contact lenses, if present and easy to do. Continue rinsing. 
Obtain medical attention if irritation develops or persists. 
Ingestion: Do NOT induce vomiting. Rinse mouth. Immediately call a POISON CENTER or doctor/physician. 
4.2.       Most Important Symptoms and Effects Both Acute and Delayed 
General: May cause drowsiness and dizziness. Causes skin irritation. May be fatal if swallowed and enters airways. 

Inhalation: High concentrations may cause central nervous system depression such as dizziness, vomiting, numbness, drowsiness, 
headache, and similar narcotic symptoms. 
Skin Contact: Redness, pain, swelling, itching, burning, dryness, and dermatitis. 
Eye Contact: May cause slight irritation to eyes. 
Ingestion: Aspiration into the lungs can occur during ingestion or vomiting and may cause lung injury. 
Chronic Symptoms: Repeated exposure may cause skin dryness or cracking. 
4.3.       Indication of Any Immediate Medical Attention and Special Treatment Needed   
If exposed or concerned, get medical advice and attention. If medical advice is needed, have product container or label at hand. 
Safety‐Kleen Premium Solvent (Virgin and Recycled) 
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According To Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules And Regulations And According To The Hazardous Products Regulation  (February 11, 2015). 

02/24/2022  EN (English US)    3/8 

SECTION 5: FIRE‐FIGHTING MEASURES   
5.1.       Extinguishing Media 
5.2.       Special Hazards Arising From the Substance or Mixture 
5.3.       Advice for Firefighters 
Precautionary Measures Fire: Exercise caution when fighting any chemical fire.  
Firefighting Instructions: Use water spray or fog for cooling exposed containers. In case of major fire and large quantities: Evacuate 
area. Fight fire remotely due to the risk of explosion. 
Protection During Firefighting: Do not enter fire area without proper protective equipment, including respiratory protection.  
Hazardous Combustion Products: Incomplete combustion is likely to give rise to a complex mixture of airborne solid and liquid 
particulates and gases, including carbon monoxide and unidentified organic and inorganic compounds. If sulfur compounds are 
present in appreciable amounts, combustion products may include also H2S and SOx (sulfur oxides) or sulfuric acid.  
Other Information: Do not allow run‐off from fire fighting to enter drains or water courses. 
5.4.       Reference to Other Sections 
Refer to Section 9 for flammability properties. 

SECTION 6: ACCIDENTAL RELEASE MEASURES   
6.1.       Personal Precautions, Protective Equipment and Emergency Procedures  
General Measures: Avoid breathing (vapor, mist, spray). Do not get in eyes, on skin, or on clothing. Keep away from heat, hot 
surfaces, sparks, open flames, and other ignition sources. No smoking. Use special care to avoid static electric charges. 
6.1.1.      For Non‐Emergency Personnel  
Protective Equipment: Use appropriate personal protective equipment (PPE). 
Emergency Procedures: Evacuate unnecessary personnel. Stop leak if safe to do so. 
6.1.2.      For Emergency Personnel  
Protective Equipment: Equip cleanup crew with proper protection. 
Emergency Procedures: Upon arrival at the scene, a first responder is expected to recognize the presence of dangerous goods, 
protect oneself and the public, secure the area, and call for the assistance of trained personnel as soon as conditions permit. 
Ventilate area. Eliminate ignition sources. 
6.2.       Environmental Precautions  
Prevent entry to sewers and public waters. Avoid release to the environment. Collect spillage. 
6.3.       Methods and Materials for Containment and Cleaning Up  
For Containment: Contain any spills with dikes or absorbents to prevent migration and entry into sewers or streams. As an 
immediate precautionary measure, isolate spill or leak area in all directions. 
Methods for Cleaning Up: Clean up spills immediately and dispose of waste safely. Transfer spilled material to a suitable container 
for disposal. Contact competent authorities after a spill. Absorb and/or contain spill with inert material. Do not take up in 
combustible material such as: saw dust or cellulosic material. Use only non‐sparking tools. 
6.4.       Reference to Other Sections   
See Section 8 for exposure controls and personal protection and Section 13 for disposal considerations. 

SECTION 7: HANDLING AND STORAGE 
7.1.       Precautions for Safe Handling  
Additional Hazards When Processed: Handle empty containers with care because residual vapors are flammable. 
Precautions for Safe Handling:  Wash hands and other exposed areas with mild soap and water before eating, drinking or smoking 
and when leaving work. Avoid prolonged contact with eyes, skin and clothing. Avoid breathing vapors, mist, spray. Take 
precautionary measures against static discharge. Use only non‐sparking tools. 
Hygiene Measures: Handle in accordance with good industrial hygiene and safety procedures.       
7.2.       Conditions for Safe Storage, Including Any Incompatibilities    
Suitable Extinguishing Media: Dry chemical powder, alcohol‐resistant foam, carbon dioxide (CO2). Water may be ineffective but 
water should be used to keep fire‐exposed container cool.  
Unsuitable Extinguishing Media: Do not use a heavy water stream. A heavy water stream may spread burning liquid.  
Fire Hazard: Combustible liquid. Will float and can be reignited on water surface.  
Explosion Hazard: May form flammable or explosive vapor‐air mixture.  
Reactivity: Reacts violently with strong oxidizers. Increased risk of fire or explosion.  
Safety‐Kleen Premium Solvent (Virgin and Recycled) 
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According To Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules And Regulations And According To The Hazardous Products Regulation  (February 11, 2015). 

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Technical Measures: Comply with applicable regulations. Take action to prevent static discharges. 
Storage Conditions: Store in a dry, cool place. Keep/Store away from direct sunlight, extremely high or low temperatures and 
incompatible materials. Store locked up/in a secure area. Store in a well‐ventilated place. Keep container tightly closed. Keep in 
fireproof place. 
Incompatible Materials: Strong oxidizers. 
7.3.       Specific End Use(s)       
Cleaning and degreasing metal parts. For professional use only. 
SECTION 8: EXPOSURE CONTROLS/PERSONAL PROTECTION 
8.1.       Control Parameters  

For substances listed in section 3 that are not listed here,  there are no established exposure limits from the manufacturer, supplier, 
importer, or the appropriate advisory agency including: ACGIH (TLV), AIHA (WEEL), NIOSH (REL), OSHA (PEL), or Canadian provincial 
governments. 

8.2.       Exposure Controls 
Appropriate Engineering Controls: Ensure adequate ventilation, especially in confined areas. Ensure all national/local regulations 
are observed. Proper grounding procedures to avoid static electricity should be followed. 

Personal Protective Equipment: Gloves. Protective clothing. Safety glasses. Insufficient ventilation: wear respiratory protection. 

Materials for Protective Clothing: Chemically resistant materials and fabrics.  

Hand Protection: Wear protective gloves. 

Eye and Face Protection: Safety glasses with side shields. 

Skin and Body Protection: Wear suitable protective clothing. 

Respiratory Protection: If exposure limits are exceeded or irritation is experienced, approved respiratory protection should be worn. 
In case of inadequate ventilation, oxygen deficient atmosphere, or where exposure levels are not known wear approved respiratory 
protection. 

Other Information: When using, do not eat, drink or smoke. 
SECTION 9: PHYSICAL AND CHEMICAL PROPERTIES 
9.1.       Information on Basic Physical and Chemical Properties 
Physical State  : Liquid 
Appearance  : Clear, colorless to pale yellow 
Odor  : Mild, hydrocarbon 
Odor Threshold  : 30 ppm (based on Stoddard Solvent) 
pH  : No data available 
Evaporation Rate  : < 1 (butyl acetate = 1) 
Melting Point  : ‐49 °C (‐56.2 °F) 
Freezing Point  : ‐43 °C (‐45.4 °F) 
Boiling Point  : 192 – 205 °C (377.6 – 401 °F) 
Flash Point  : > 67 °C [Tagliabue(ASTM D‐56)] (152.6 °F) 
Auto‐ignition Temperature  : 220 °C (428 °F) 
Decomposition Temperature  : No data available 
Flammability (solid, gas)  : Not applicable 
Lower Flammable Limit  : 0.8 % 
Upper Flammable Limit  : 6 % 
Vapor Pressure  : 0.067 kPa (0.5 mmHg)[room temperature) 
Relative Vapor Density at 20°C  : 5 (air = 1) 
Relative Density  : No data available 
Density  : ≈ 6.67 lb/gal 
Specific Gravity  : 0.77 ‐ 0.82 @ @ 16 °C (60 °F) 
Safety‐Kleen Premium Solvent (Virgin and Recycled) 
Safety Data Sheet  
According To Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules And Regulations And According To The Hazardous Products Regulation  (February 11, 2015). 

02/24/2022  EN (English US)    5/8 

Solubility  : Water: Insoluble 
Partition Coefficient: N‐Octanol/Water  : No data available 
Viscosity  : No data available 
VOC content  : 100 % ; 6.4 to 6.7 LB/US gal; 770 to 800 g/l; As per 40 CFR Part 51.100(s); 
Consult with your state/local air pollution control agency and their rules 
and regulations for specific direction in your specific area. 

SECTION 10: STABILITY AND REACTIVITY 
10.1.       Reactivity:      
Reacts violently with strong oxidizers. Increased risk of fire or explosion. 
10.2.       Chemical Stability:       
Combustible liquid. May form flammable or explosive vapor‐air mixture. 
10.3.       Possibility of Hazardous Reactions:       
Hazardous polymerization will not occur. 
10.4.       Conditions to Avoid:      
Direct sunlight, extremely high or low temperatures, heat, hot surfaces, sparks, open flames, incompatible materials, and other 
ignition sources. 
10.5.       Incompatible Materials:      
Strong oxidizers. 
10.6.       Hazardous Decomposition Products:      
None expected under normal conditions of use. 
SECTION 11: TOXICOLOGICAL INFORMATION 
11.1.       Information on Toxicological Effects ‐ Product 
LD50 and LC50 Data:  
No additional information available 
Skin Corrosion/Irritation: Causes skin irritation. 

Eye Damage/Irritation: Not classified 

Respiratory or Skin Sensitization: Not classified 

Germ Cell Mutagenicity: Not classified 

Carcinogenicity: Not classified 

Specific Target Organ Toxicity (Repeated Exposure): Not classified 

Reproductive Toxicity: Not classified 

Specific Target Organ Toxicity (Single Exposure): May cause drowsiness or dizziness.  

Aspiration Hazard: May be fatal if swallowed and enters airways. 
Symptoms/Injuries After Inhalation: High concentrations may cause central nervous system depression such as dizziness, vomiting, 
numbness, drowsiness, headache, and similar narcotic symptoms. 
Symptoms/Injuries After Skin Contact: Redness, pain, swelling, itching, burning, dryness, and dermatitis. 
Symptoms/Injuries After Eye Contact: May cause slight irritation to eyes. 
Symptoms/Injuries After Ingestion: Aspiration into the lungs can occur during ingestion or vomiting and may cause lung injury. 
Chronic Symptoms: Repeated exposure may cause skin dryness or cracking. 

11.2.       Information on Toxicological Effects ‐ Ingredient(s) 
LD50 and LC50 Data:      
w 
Petroleum distillates, hydrotreated light (64742‐47‐8) 
LD50 Oral Rat > 5000 mg/kg 
LD50 Dermal Rabbit > 2000 mg/kg 
LC50 Inhalation Rat > 2.11 mg/l/4h 

Toluene (108‐88‐3) 
Acute Toxicity (Oral): Not classified 
Acute Toxicity (Dermal): Not classified 
Acute Toxicity (Inhalation): Not classified 
Safety‐Kleen Premium Solvent (Virgin and Recycled) 
Safety Data Sheet  
According To Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules And Regulations And According To The Hazardous Products Regulation  (February 11, 2015). 

02/24/2022  EN (English US)    6/8 

LD50 Oral Rat 2600 mg/kg 
LD50 Dermal Rabbit 12000 mg/kg 
LC50 Inhalation Rat 25.7 mg/l/4h 

SECTION 12: ECOLOGICAL INFORMATION 
12.1.       Toxicity   
Ecology ‐ General: Not classified. 
Safety‐Kleen Premium Solvent (Virgin and Recycled) (64742‐47‐8) 
LC50 Fish 1 > 500 mg/l 

12.2.       Persistence and Degradability   
Safety‐Kleen Premium Solvent (Virgin and Recycled) (64742‐47‐8) 
Persistence and Degradability Not established. 

12.3.       Bioaccumulative Potential    
Safety‐Kleen Premium Solvent (Virgin and Recycled) (64742‐47‐8) 
Bioaccumulative Potential Not established. 

12.4.       Mobility in Soil     
No additional information available 
12.5.       Other Adverse Effects     
Other Information: Avoid release to the environment. 
SECTION 13: DISPOSAL CONSIDERATIONS 
13.1.  Waste treatment methods 
Waste Disposal Recommendations: Dispose of contents/container in accordance with local, regional, national, territorial, provincial, 
and international regulations. 
Additional Information: Handle empty containers with care because residual vapors are flammable. 
Ecology ‐ Waste Materials: Avoid release to the environment. 
SECTION 14: TRANSPORT INFORMATION 
The shipping description(s) stated herein were prepared in accordance with certain assumptions at the time the SDS was authored, 
and can vary based on a number of variables that may or may not have been known at the time the SDS was issued. 
14.1.       In Accordance with DOT        
Proper Shipping Name  : COMBUSTIBLE LIQUID, N.O.S. (PETROLEUM DISTILLATES) 
Identification Number  : NA1993  
Packing Group  : III   

Special Provisions: 49CFR173.150. Not regulated for transport in single packages less than 119 US Gal / 450 L (bulk 
package). Non‐bulk packages are not regulated.  
14.2.       In Accordance with IMDG    Not regulated for transport 
14.3.       In Accordance with IATA      Not regulated for transport 
14.4.       In Accordance with TDG       Not regulated for transport 

SECTION 15: REGULATORY INFORMATION 
15.1.       US Federal Regulations 
Safety‐Kleen Premium Solvent (Virgin and Recycled) (64742‐47‐8) 
SARA Section 311/312 Hazard Classes Health hazard ‐ Specific target organ toxicity (single or repeated 
exposure) 
Health hazard ‐ Skin corrosion or Irritation 
Physical hazard ‐ Flammable (gases, aerosols, liquids, or solids) 
Health hazard ‐ Aspiration hazard 

Petroleum distillates, hydrotreated light (64742‐47‐8) 
Listed on the United States TSCA (Toxic Substances Control Act) inventory 
Safety‐Kleen Premium Solvent (Virgin and Recycled) 
Safety Data Sheet  
According To Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules And Regulations And According To The Hazardous Products Regulation  (February 11, 2015). 

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15.2.       US State Regulations 

California Proposition 65 

WARNING: This product can expose you to Benzene, p‐Dichlorobenzene, Ethylbenzene, Cumene, and Naphthalene, which 
are known to the State of California to cause cancer Benzene and Toluene which are known to the State of California to 
cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov. 
Chemical Name (CAS No.)  Carcinogenicity  Developmental 
Toxicity 
Female Reproductive 
Toxicity 
Male Reproductive 
Toxicity 
Benzene (71‐43‐2)  X  X    X 
Ethylbenzene (100‐41‐4)  X     

Naphthalene (91‐20‐3)  X     

Benzene, 1,4‐dichloro‐ (106‐46‐
7) 
X     

Toluene (108‐88‐3)    X     
p‐Dichlorobenzene (106‐46‐7)  X       
Cumene (98‐82‐8)  X       
15.3.       Canadian Regulations 

Petroleum distillates, hydrotreated light (64742‐47‐8) 
Listed on the Canadian DSL (Domestic Substances List) 

SECTION 16: OTHER INFORMATION, INCLUDING DATE OF PREPARATION OR LAST REVISION   

Date of Preparation or Latest 
Revision 
: 02/24/2022  
Other Information  : This document has been prepared in accordance with the SDS requirements of the OSHA 
Hazard Communication Standard 29 CFR 1910.1200 and Canada’s Hazardous Products 
Regulations (HPR) SOR/2015‐17. 
GHS Full Text Phrases: 

‐‐‐‐‐‐ Asp. Tox. 1  Aspiration hazard Category 1 
‐‐‐‐‐‐ Flam. Liq. 4  Flammable liquids Category 4 
‐‐‐‐‐‐ Skin Irrit. 2  Skin corrosion/irritation Category 2 
‐‐‐‐‐‐ STOT SE 3  Specific target organ toxicity — Single exposure, Category 3, Narcosis 
‐‐‐‐‐‐ H227  Combustible liquid  
‐‐‐‐‐‐ H304  May be fatal if swallowed and enters airways 
‐‐‐‐‐‐ H315  Causes skin irritation 
‐‐‐‐‐‐ H336  May cause drowsiness or dizziness 

NFPA Health Hazard : 2 ‐ Materials that, under emergency conditions, can 
cause temporary incapacitation or residual injury. 

NFPA Fire Hazard : 2 ‐ Materials that must be moderately heated or 
exposed to relatively high ambient temperatures 
before ignition can occur. 
NFPA Reactivity Hazard : 1 ‐ Materials that in themselves are normally stable 
but can become unstable at elevated temperatures 
and pressures. 

The information contained herein is correct to the best of our knowledge, information, and belief and is designed only as guidance for 
the handling, use, processing, storage, transportation, disposal, and release of the product. User assumes all risks incident to use of 
this product and shall determine the quality and suitability of the product for its use. Supplier offers no warranty, express or implied, 
whatsoever, including warranties of merchantability or fitness for a particular purpose or otherwise, and specifically disclaims any and 
all liability for incidental, consequential, or other damages arising out the use or misuse of the product. The information provided 
relates only to the specific material provided and may not be valid if used in combination with any other materials or process, unless 
specified herein. 
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According To Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules And Regulations And According To The Hazardous Products Regulation  (February 11, 2015). 

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NA GHS SDS 2015 (Can, US)  
SAFETY DATA SHEET
SECTION 1 – IDENTIFICATION
PRODUCT NAME Omega DeScaler CLASS ACID DETERGENT CLEANER
PRODUCT USE Non hazardous acid cleaner
SUPPLIER Omegasonics PHONE NUMBER 818-359-5635
STREET ADDRESS 330 E. Easy Street, Suite A EMERGENCY PHONE [phone]
CITY, STATE SIMI Valley, CA 93065 DATE 1/01/2021
==================================================================================
SECTION 2 – HAZARD IDENTIFICATION
==================================================================================
CLASSIFICATION UN1760

SIGNAL WORD : DANGER

SYMBOLS:

HAZARD STATEMENT Causes skin burn and serious eye damage..KEEP OUT OF REACH OF CHILDREN.
May corrode aluminum and other amphoteric metals.Do not use on anodized or polished aluminum
PRECAUTION STATEMENT Wear protective goggles, gloves and clothing. Wash contaminated areas with water .
In case of contact consult a physician. Wash hands after use

GENERAL ADVICE. Follow instructions and use good hygienic practices.

EYES – In case of contact wash eyes. Remove contact lenses. Consult a physician

SKIN – Wash skin with water until irritation stops. Wash clothes before reuse. Consult a physician for severe
burns.
INHALATION – Remove victim to fresh air

INGESTATION – Drink large amounts of water to dilute cleaner. Consult physician immediately. Mucosal
Damage can occur counter indicating gastric lavage.
STORAGE – Store in original container indoors between 40 and 100 F.

DISPOSAL – Dispose of in accordance with federal, state, and local regulations. Unused product should be
Disposed of as a hazardous waste.
OTHER HAZARD None known

OTHER INFORMATION

Omega DeScaler
==================================================================================
SECTION 3 – COMPOSITION
==================================================================================
INGREDIEENT CAS NUMBER PERCENT TLV
-------------------------------------------------------------------------------------------------------------------------------------------
GLYCOLIC ACID 79-14-1 >40
--------------------------------------------------------------------------------------------------------------------------------------------

SECTION 4 – FIRST AID
==================================================================================
EYES Wash with water until irritation stops. Consult a physician
SKIN Remove contaminated clothes and wash skin with clean water until irritation subsides. In cases of severe
reaction consult a physician. Wash clothing before reuse.

INGESTION – Drink copious amounts of water to dilute cleaner. Mucosal damage may counter indicate gastric
lavage. Consult a physician. Never give water or anything to an unconscious person..

INHALATION – Move victim to fresh air and make comfortable

OTHER
==================================================================================
SECTION 5 – FIRE HAZARD
==================================================================================
NONE Water based product
-------------------------------------------------------------------------------------------------------------------------------------------
FIREFIGHTING PROCEDURE NA
-------------------------------------------------------------------------------------------------------------------------------------------
EXPLOSION/REACTIVITY DATA Nonreactive and not explosive
==================================================================================
SECTION 6 – ACCIDENTAL SPILL MEASSURES
==================================================================================
Contain spill and clean up excess liquid using a wet vac or mop. Dispose of waste in accordance with federal, state,
and local regulations. Wash area to sewer in compliance with regulations.
==================================================================================
SECTION 7 – HANDLING AND STORAGE
==================================================================================
STORAGE Store in original sealed container indoors between 40 and 100 F. Store apart from reactive products.
------------------------------------------------------------------------------------------------------------------------------------------
HANDLING Use approved hygienic and safety practices when handling product. Wear appropriate protective
goggles, gloves, and clothing. Have adequate ventilation to ensure safe usage.
==================================================================================
SECTION 8- EXPOSURE CONTROLS/PERSONAL PROTECTION
==================================================================================
EXPOSURE GUIDELINES 3 mg/m3 mist only
------------------------------------------------------------------------------------------------------------------------------------------
PERSONAL PROTECTON Wear glasses, goggles, or face shield when handling product. Chemical resistant gloves,
aprons, and boots should be worn when handling product.
-------------------------------------------------------------------------------------------------------------------------------------------
RESPIRATORY PROTECTION Not necessary with normal ventilation. In confined area provide ventilation to
prevent vapor build up.
-------------------------------------------------------------------------------------------------------------------------------------------
HYGENIC PRACTICES Wash hands after using and before eating
Omega DeScaler

SECTION 9 – PHYSICAL AND CHEMICAL PROPERTIES
==============================================================================
APPEARANCE – Clear amber liquid with a sharp detergent odor
----------------------------------------------------------------------------------------------------------------------------------
BOILING POINT 212 SPG 1.155
VAPOR PRESSURE 25 PERCENT VOLITLE >70
EVAPORATION RATE 1 (water = 1) SOLUBILITY 100%
pH 2 VAPOR DENSITY NA
FLAMMABILTY Non flammable REACTIVITY Stable
===============================================================================
SECTION 10 – STABILITY AND REACTIVITY
==================================================================================
STABILITY Stable REACTIVITY Not reactive
-------------------------------------------------------------------------------------------------------------------------------------------
HAZARDOUS POLMERIZTION Will not occur FLAMMABILTY Water based non flammable
-------------------------------------------------------------------------------------------------------------------------------------------
INCOMPATABLE MATERIALS. Strong alkalai and oxidizers. Do not mix product with other products
-------------------------------------------------------------------------------------------------------------------------------------------
SECTION 11 – TOXILOGICAL INFORMAATION
==================================================================================
SYMPTONS FOR ROUTES OF EXPOSURE
INHALATION Mucosal irritation to nose and respiratory tract.
SKIN – Irritation and redness and possible chemical burns.
EYE CONTACT – Irritation and redness
INGESTION – Chemical burns to mouth, throat and stomach. Pain, nausea, vomiting, and diarrhea
==================================================================================
SECTION 12 – ECOLOGICAL INFORMATION
==================================================================================
Product is water soluble, biodegradable and non toxic.
==================================================================================
SECTION 13 – DISPOSAL CONSIDERATIONS
==================================================================================
Neutralize then sewer or landfill in accordance with local, state, and federal regulations. Unused product is
considered a hazardous waste.
==================================================================================
SECTION 14 – TRANSPORTATION
==================================================================================
Ship in DOT approved containers using approved transportation means.
==================================================================================
SECION 15 – REGULATORY INFORMATION
==================================================================================
DOT: UN1760 CORROSIVE LIQUID NOS(GLYCOLIC ACID)8, PGIII
==================================================================================
SECTION 16 – OTHER INFFORMATION
==============================================================================
NFPA Health 2 Flammability 0 Instability 0 Other
---------------------------------------------------------------------------------------------------------------------------------
GEENERAL DISCLAIMER Information provided is correct to the best of our knowledge at current time. Since use
of the product is out of the control of the supplier no warranty for the suitability and use of the product in an application
is given or implied.

Omega DeScaler

Swanson Industries EHNS Partners, LLC
Notice of Intent to Modify Approval Order October 2024
APPENDIX H: EMISSIONS CALCULATIONS

Appendix H - Emissions Calculations
Parts Washer VOC and HAP Emissions
Total Number of Parts Washer Units:6
AP-42 Table 4.6-2, Cold Cleaning Entire Unit Solvent Loss:0.33 tons/year/unit
660 pounds/year/unit
0.08 pounds/hour1/unit
Total Potential-To-Emit from Parts Washers:1.98 tons/year
3960 pounds/year
0.45 pounds/hour1
1 Assumes 8,760 hours per year
Ultrasonic Cleaner Potential Emissions:1 gallon/month of cleaner
115.45 pounds/year of cleaner
70%VOC Content
80.82 VOC pounds/year
0.04 VOC tons/year
Table H-1: Proposed Permitted Emission Limits for VOC and Speciated HAPs
Solvent Content2 Maximum Annual
Emissions
Maximum Annual
Emissions
(wt%)(lbs/year)(tons/year)
100%4041 2.02
100%3960 1.98
100%1664 0.83
100%3960 1.98
100%3960 1.98
100%3960 1.98
100%3960 1.98
3 Benzene emissions have been capped to remain below carcinogenic emission threshold values
2 The Safety Kleen SDS indicates the presence of benzene, ethyl benzene, naphthalene,
toluene, and cumene but does not speciate concentration of each HAP. Safety Kleen
does not have additional information regarding component concentrations. Therefore,
the conservative assumption that the solvent contains 100% of each HAP has been
employed in the absence of conclusive data.
Toluene (HAP)
Cumene (HAP)
Pollutant
Volatile Organic Compounds
Naphthalene (HAP)
Ethyl Benzene (HAP)
Benzene (HAP)3
Total HAPs
Swanson Industries
Notice of Intent to Modify Approval Order
EHNS Partners, LLC
October 2024
Appendix H - Emissions Calculations
Table H-2: Facility-Wide Permitted Emission Limits
Current Pemitted
Emissions (TPY)
Change
(TPY)
Proposed
Emissions (TPY)
687.00 0 687.00
0.71 0 0.71
1.74 0 1.74
4.72 0 4.72
0.72 0 0.72
0.08 0 0.08
4.80 2.02 6.82
Current Pemitted
Emissions (TPY)
Change
(TPY)
Proposed
Emissions (TPY)
0.02 0 0.02
0.02 0 0.02
0.02 0 0.02
0.14 2.02 2.16
3.15 2.02 5.17
--0.83 0.83
--2.02 2.02
--2.02 2.02
--2.02 2.02
Current Pemitted
Emissions (TPY)
Change
(TPY)
Proposed
Emissions (TPY)
3.34 1.98 5.32
1 Benzene emissions have been capped to remain below carcinogenic emission threshold values
CO2 Equivalent
Criteria Pollutant
Volatile Organic Compounds
Sulfur Dioxide
Particulate Matter - PM10
Total HAPs
Xylenes
Benzene1
Ethyl Benzene
Naphthalene
Cumene
Total Hazardous Air
Pollutants
Chromium Compounds
Manganese
Nickel
Toluene
Particulate Matter - PM2.5
Hazardous Air Pollutants
Nitrogen Oxides
Carbon Monoxide
Swanson Industries
Notice of Intent to Modify Approval Order
EHNS Partners, LLC
October 2024

PO Box 843
Portland, Maine 04104
Phone: [phone]

PERMIT MODIFICATION APPLICATION
Permit Number DAQE-IN157040002-22

January 2024
EHN S
PARTNERS

Swanson Industries i EHNS Partners, LLC
Notice of Intent to Modify Approval Order January 2024
TABLE OF CONTENTS
SECTION PAGE NO.

1 INTRODUCTION ............................................................................................... 1-1
1.1 Modification Description ................................................................................................... 1-1
1.2 Application Contents ......................................................................................................... 1-1
2 SITE PLAN ..................................................................................................... 2-1
3 BACT ANALYSIS .............................................................................................. 3-1
3.1 Parts Washer BACT .......................................................................................................... 3-1
4 EMISSION CALCULATION DOCUMENTATION ............................................................. 4-1
4.1 Parts Washer Emissions ................................................................................................... 4-1

APPENDICES
Appendix A: UDAQ Form 1 – Notice of Intent Checklist
Appendix B: UDAQ Form 2 – Company Information
Appendix C: UDAQ Form 4 – Welding Baghouse Modification
Appendix D: UDAQ Form 4 – Solvent Cleaner Process Data
Appendix E: UDAQ Form 21 – Solvent Cleaner Detail Form
Appendix F: UDAQ Form 5 – Emissions Information
Appendix G: Parts Washer Solvent SDS
Appendix H: Emissions Calculations

Swanson Industries 1-1 EHNS Partners, LLC
Notice of Intent to Modify Approval Order January 2024
1 INTRODUCTION
Swanson Industries, Inc. (Swanson) located at 610 Industrial Road in Helper, Utah operates a mining
equipment repair and refurbishing facility with SIC code 3053. Swanson's equipment repairs and
maintenance processes take place in two shop buildings at the site: the rebuild shop and the jack shop. The
onsite activities include abrasive blasting and grinding, painting and coating, and welding and cutting
including a laser cladding process. Natural gas combustion is used to operate space and water heaters for
the facility. The facility currently operates under a Utah Department of Environmental Quality (DEQ) Division
of Air Quality (DAQ) air Approval Order Number DAQE-IN157040002-22.
Swanson is located in Carbon County which is currently an attainment area. Swanson is a minor source of
air emissions and is subject to 40 C.F.R. Part 63, Subpart XXXXXX: National Emission Standards for
Hazardous Air Pollutants Area Source Standards for Nine Metal Fabrication and Finishing Source Categories.
1.1 Modification Description
On August 10, 2023, DAQ conducted an inspection of the Swanson facility and found the differential pressure
reading range on the welding baghouse gauge to be different than the permitted range of three (3) to eight
(8) inches of water column (inH2O) which is established in Approval Order Condition II.B.4.c. The baghouse
differential pressure gauge acceptable range is zero to four inH2O. Swanson received a Letter of Warning
for the discrepancy and was instructed to submit the Notice of Intent to Modify the Approval Order to reflect
the correct operating range. This modification will not result in any change in the welding emissions or other
Approval Order conditions.
As part of this modification application, Swanson is requesting inclusion of emissions from six solvent parts
washers and an ultrasonic cleaner in the facility’s volatile organic compound (VOC) and hazardous air
pollutant (HAP) emission limits from evaporative sources established in Approval Order Condition II.B.2.b.
The condition states that the facility may not emit more than 4.77 tons of VOCs, 3.15 tons of xylene, and
0.14 tons of toluene from evaporative sources including painting, printing, coating, and cleaning. The original
Notice of Intent Application did not include VOC or HAP emissions from the solvent usage in the parts
washers in the calculation of facility’s evaporative source potential to emit. The original application emissions
calculations included only paint and coating usage; therefore, the emission limits are too stringent when
accounting for cleaning evaporative emissions.
The proposed modifications will not exceed the emissions thresholds established in UDEQ Regulation
Section R307-410-4 Table 1, therefore the requirement to conduct air quality modeling does not apply.
1.2 Application Contents
The required DAQ application forms are provided in Appendixes A – F. As required, a Site Plan is provided
in Section 2. A Best Available Control Technology (BACT) analysis for new and modified equipment is
provided in Section 3. Emissions calculation documentation for the parts washers and specifications are
provided in Section 4.

Swanson Industries 2-1 EHNS Partners, LLC
Notice of Intent to Modify Approval Order January 2024
2 SITE PLAN

Swanson Industries 3-1 EHNS Partners, LLC
Notice of Intent to Modify Approval Order January 2024
3 BACT ANALYSIS
Swanson must demonstrate that each emissions unit modified or constructed as part of this application will
receive Best Available Control Technology (BACT). BACT means an emission limitation based on the
maximum degree of reduction which is achievable for each pollutant considering energy, environmental,
and economic impacts and other costs. BACT must be applied to all regulated pollutants from new and
modified emission units, including fugitive as well as stack emissions. There are five key steps to a “top-
down” BACT approach:
1. Identify all control technologies potentially applicable to the processes.
2. Eliminate technically infeasible options.
3. Rank remaining control technologies by control effectiveness.
4. Evaluate technically feasible control alternatives (energy, environmental, and economic impacts)
including toxic and hazardous pollutant impacts, if a control technology less effective than the top
option is proposed as BACT.
5. Select BACT in consideration of energy, environmental, and economic impacts.
An evaluation of potentially applicable emission control technologies has been conducted utilizing technical
literature, recent EPA/state/local air pollution control requirements, the U.S. EPA Control Technology
Database, and a search of the Reasonably Available Control Technology (RACT)/BACT/Lowest Achievable
Emission Rate (LAER) Clearinghouse (RBLC) published on the EPA Clean Air Technology Center.
Because the modification to the welding baghouse pressure differential gauge acceptable range will not
change the emissions associated with the welding process or control efficiency of the baghouse, a BACT
analysis has not been completed.
3.1 Parts Washer BACT
Cold (unheated) solvent cleaners have the potential to emit Volatile Organic Compounds (VOCs) and
Hazardous Air Pollutants (HAPs) during normal use from evaporative losses of the solvent in use. Potential
emissions minimization techniques include: (1) using a low-VOC and low-HAP content solvent, (2) using
parts washer design to minimize emissions, and (3) using proper work practices to minimize solvent drag
out and evaporation. Add-on pollution control for small reservoir parts washers is not technically or
economically feasible.
Due to the parts cleaning demands at Swanson, the use of a lower VOC solvent is not a technically feasible
option. However, Swanson uses a solvent with a vapor pressure of 0.5 mm Hg at room temperature and
uses a parts washers with rigid tight-fitting lids. The units remain closed when not in use to minimize
evaporative losses. Swanson proposes this as BACT for the parts washers.

Swanson Industries 4-1 EHNS Partners, LLC
Notice of Intent to Modify Approval Order January 2024
4 EMISSION CALCULATION DOCUMENTATION
There is no anticipated change in emissions from the welding operation or the baghouse control equipment
as a result of the pressure differential gauge acceptable range modification requested. Therefore, the
emissions from this process will remain identical to those identified as part of the original NOI Application.
4.1 Parts Washers Emissions
Swans operates six Safety Kleen parts washers that are maintained by a third-party contractor. The parts
washers dispense solvent through a metal brush or small nozzle via non-pressurizes flow from a small
electric pump. The dispensed solvent then drains into a solvent storage reservoir. Specifications for each
parts washer are summarized in the table below.
Table 4-1: Parts Washers Specifications
Parts Washer Specifications Model 30 Model 44 Model 250
(2 total) (2 total) (2 total)
Freeboard:
a. Distance from solvent surface to top
edge of degreaser (inches)
b. Width at solvent surface (inches)
c. Freeboard ratio
Remote reservoir Remote reservoir Remote reservoir
Tank Dimensions
a. Length (inches)
b. Width (inches)
c. Height (inches)
d. Tank Capacity (gallons)

33.25 inches
22.25 inches
8 inches
15 gallons
45.5 inches
21.5 inches
10.75 inches
32 gallons
36 inches
27 inches
inches
25 gallons
The parts washers have the potential to emit Volatile Organic Compounds (VOCs) and Hazardous Air
Pollutants (HAPs) during normal use from evaporative losses of the solvent in use. Actual emissions from
the units can be calculated on a mass balance basis by monitoring and recording the amount of solvent
added to the parts washers and subtracting any solvent that is removed from the parts washers and
disposed of as waste.
Over the past six years, Swanson has consumed ~250 pounds of solvent per year, as estimated by
calculating the total amount of new solvent added to the units minus the amount of solvent disposed of as
waste. It can conservatively be assumed that this consumption is equivalent to the evaporative losses and
therefore the fugitive VOC and HAP emissions from the part washer (equivalent to 0.125 tons per year).
AP-42 Section 4.6, Table 4.6-2 establishes a cold cleaner annual emissions rate of 0.33 tons per year, per
unit, equivalent to 1.98 tons per year for all six parts washers. While it is unlikely Swanson will achieve this
magnitude of solvent usage, Swanson is anticipating growth in product demand and usage of the parts

Swanson Industries 4-2 EHNS Partners, LLC
Notice of Intent to Modify Approval Order January 2024
washer the future. Therefore, the facility is requesting to comply with a HAP and VOC emission limit of 1.98
tons per year from the parts washer, equivalent to ~566 gallons of solvent consumption per year.
In addition to the solvent parts washers, Swanson operates one Super Pro Ultrasonic Cleaner. The ultrasonic
cleaner uses a non-hazardous acid cleaner called Omega DeScaler which has a VOC content of 70% and
contains no HAPs (SDS supplied in Appendix G). Swanson uses one gallon of Omega DeScaler each month
prior to replacement. Conservatively assuming 100% of the VOC is emitted via evaporative loses, the
ultrasonic cleaner has the potential to emit 0.04 tons per year of VOCs.
Based on the density, VOC, and HAP content information contained in the solvent SDS (supplied as Appendix
G), this is equivalent to the emissions rates summarized in the table below.
Table 4-2: Proposed Permitted Emission Limits
Pollutant Solvent Content1
(wt%)
Maximum Annual
Emissions
(lbs/year)
Maximum Annual
Emissions
(tons/year)
Volatile Organic
Compounds (VOCs) 100% 4041 2.02
Total HAPs 100% 39601 1.981
Benzene (HAP) 100% 3960 1.98
Ethyl Benzene (HAP) 100% 3960 1.98
Naphthalene (HAP) 100% 3960 1.98
Toluene (HAP) 100% 3960 1.98
Cumene (HAP) 100% 3960 1.98
1 The Safety Kleen SDS indicates the presence of benzene, ethyl benzene, naphthalene, toluene, and cumene
but does not speciate concentration of each HAP. Safety Kleen does not have additional information
regarding component concentrations. Therefore, the conservative assumption that the solvent contains
100% of each HAP has been employed in the absence of conclusive data.

Swanson Industries EHNS Partners, LLC
Notice of Intent to Modify Approval Order January 2024
APPENDIX A: UDAQ FORM 1 – NOTICE OF INTENT CHECKLIST
Form 1 Date __________________
Notice of Intent (NOI) Application Checklist
Company __________________
Utah Division of Air Quality
New Source Review Section
Source Identification Information [R307-401-5]
1. Company name, mailing address, physical address and telephone number 
2. Company contact (Name, mailing address, and telephone number)
3.Name and contact of person submitting NOI application (if different than 2) 4.Source Universal Transverse Mercator (UTM) coordinates 
5. Source Standard Industrial Classification (SIC) code 
6.Area designation (attainment, maintenance, or nonattainment)
7.Federal/State requirement applicability (NAAQS, NSPS, MACT, SIP, etc.)
8.Source size determination (Major, Minor, PSD) 9. Current Approval Order(s) and/or Title V Permit numbers 
NOI Application Information: [R307-401]










N/A 
N/A 
A.Air quality analysis (air model, met data, background data, source impact analysis) N/A 
1.Detailed description of the project and source process
2.Discussion of fuels, raw materials, and products consumed/produced3.Description of equipment used in the process and operating schedule
4.Description of changes to the process, production rates, etc.
5.Site plan of source with building dimensions, stack parameters, etc.
6.Best Available Control Technology (BACT) Analysis [R307-401-8]A.BACT analysis for all new and modified equipment
7.Emissions Related Information: [R307-401-2(b)]
A.Emission calculations for each new/modified unit and site-wide
(Include PM10, PM2.5, NOx, SO2, CO, VOCs, HAPs, and GHGs)B.References/assumptions, SDS, for each calculation and pollutant
C.All speciated HAP emissions (list in lbs/hr)
8.Emissions Impact Analysis – Approved Modeling Protocol [R307-410]
A.Composition and physical characteristics of effluent(emission rates, temperature, volume, pollutant types and concentrations)
9.Nonattainment/Maintenance Areas – Major NSR/Minor (offsetting only) [R307-403]
A.NAAQS demonstration, Lowest Achievable Emission Rate, Offset requirements
B.Alternative site analysis, Major source ownership compliance certification
10.Major Sources in Attainment or Unclassified Areas (PSD) [R307-405, R307-406]
B.Visibility impact analysis, Class I area impact
11.Signature on Application
N/A 
Note: The Division of Air Quality will not accept documents containing confidential information or data.
Documents containing confidential information will be returned to the Source submitting the application.

Swanson Industries EHNS Partners, LLC
Notice of Intent to Modify Approval Order January 2024

APPENDIX B: UDAQ FORM 2 – COMPANY INFORMATION
C’~Form 2 Date January 2024
~Company Information!Notice of Intent (NOl)
t 7 Utah Division of Air Quality
New Source Review Section
AIR QUALITY Application for:E:Jlnltial Approval Order E Approval Order Modification
General Owner and Source Information
I .Company name and mailing address:2.Company’contact for environmental mailers:
Swanson Industries,Inc.Ashlyn Harlan
610 Industrial Road Phone no.:[phone]
Helper,Utah 84526 Email:[e-mail]
Phone No.:(435)472..3452
Fax No~Company contact only;consultant orindependent contractor contact
infom,ation can be provided in a coverletter
3.Source name and physical address (if different from 4.Source Property Universal Transverse Mercator
above):coordinates (UTM),including System and Datum:Same as above
UTM:12 Datum NAD83
X:5l2,029m
Y:4,392,111 mPhoneno.:
Faxno.:()
5.The Source is located in:CWb0I1 County 6.Standard Industrial Classification Code (SIC)
3053~
7.If request for modification,AO#to be modified:DAQE #lN157O40002..22 DATED:02/21/22
8.Brief (50 words or less)description of process.
Modification of baghouse differential pressure range to reflect manfacturer’s recommended operating
range and inclusion of parts washers and associated emissions.
Electronic NOl9.A complete and accurate electronic NOl submitted to DAQ Permitting Mangers Jon Black ([e-mail])or Alan
Humpherys (ahumpherys~utah gov)can expedite review process.Please mark application type.
Hard Copy Submittal [3 Electronic Copy Submittal BothIJ
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 in uiry e and to the best of my knowledge and belief.
Signature:Title:\f~~(lnk&JflCm
Telephone Number Date:
~fruL O?,~~1c Email:I Eo-2Name(Type or print)~(0(0
1 of I

Swanson Industries EHNS Partners, LLC
Notice of Intent to Modify Approval Order January 2024

APPENDIX C: UDAQ FORM 4 – WELDING BAGHOUSE MODIFICATION
Page 1 of 1
Form 4 Company____________________________
Project Information Site ______________________________

Utah Division of Air Quality
New Source Review Section
Process Data - For Modification/Amendment ONLY
1. Permit Number_______________________________
If submitting a new permit, then use Form 3
Requested Changes
2. Name of process to be modified/added:
_______________________________

End product of this process:

_______________________________

3. Permit Change Type: New Increase*
Equipment
Process

Condition Change ____________________
Other ______________________________
Other ______________________________

Other ______________________________

4. Does new emission unit affect existing
permitted process limits?

Yes No
5. Condition(s) Changing:

6. Description of Permit/Process Change**

7. New or modified materials and quantities used in process. **
Material Quantity Annually

8. New or modified process emitting units **
Emitting Unit(s) Capacity(s) Manufacture Date(s)

*If the permit being modified does not include CO2e or PM2.5, the emissions need to be calculated and submitted to DAQ, which may result in an
emissions increase and a public comment period.
**If additional space is required, please generate a document to accommodate and attach to form.

Swanson Industries EHNS Partners, LLC
Notice of Intent to Modify Approval Order January 2024

APPENDIX D: UDAQ FORM 4 – SOLVENT CLEANER PROCESS DATA
Page 1 of 1
Form 4 Company____________________________
Project Information Site ______________________________

Utah Division of Air Quality
New Source Review Section
Process Data - For Modification/Amendment ONLY
1. Permit Number_______________________________
If submitting a new permit, then use Form 3
Requested Changes
2. Name of process to be modified/added:
_______________________________

End product of this process:

_______________________________

3. Permit Change Type: New Increase*
Equipment
Process

Condition Change ____________________
Other ______________________________
Other ______________________________

Other ______________________________

4. Does new emission unit affect existing
permitted process limits?

Yes No
5. Condition(s) Changing:

6. Description of Permit/Process Change**

7. New or modified materials and quantities used in process. **
Material Quantity Annually

8. New or modified process emitting units **
Emitting Unit(s) Capacity(s) Manufacture Date(s)

*If the permit being modified does not include CO2e or PM2.5, the emissions need to be calculated and submitted to DAQ, which may result in an
emissions increase and a public comment period.
**If additional space is required, please generate a document to accommodate and attach to form.

Swanson Industries EHNS Partners, LLC
Notice of Intent to Modify Approval Order January 2024

APPENDIX E: UDAQ FORM 21 – SOLVENT CLEANER DETAIL FORM
Utah Division of Air Quality
New Source Review Section Company: _______________________ Site/Source: ______________________
Form 21 Date: ____________________________
Solvent Metal Cleaning (Degreasers)

Process Information
1. Operating schedule:

______ hrs/day

______ days/wk

______ weeks/year
2. Degreaser
Manufacturer:_________________
Model no.:____________________
Type:
□ Conveyorized □ Cold solvent
□ Open top vapor □ Batch
□ Other_______________________
3. Decription of metal parts or products
cleaned:
_______________________________
Average number of parts cleaned/hour:
_______________________________
Maximum number cleaned per hour:
_______________________________
4. Solvent usage:
Type: ____________________________
Gallons used during year: ____________
Vapor pressure: ______ (Psia @ 100 OF)
5. Solvent is: □ Sprayed □ Heated, temperature ____ OF
□ Agitated, by: □ Use of pump □ Compressed air
□ Vertical motion □ Ultrasonics
□ Other _______________________
6. Amount of solvent waste disposed of
throughout the year: _______ gallons
If known, solvent content in waste
___________________ % by volume
Method of disposal: ________________
________________________________
7. Freeboard:
a. Distance from solvent surface to top edge of degreaser
_______ inches
b. Width (not length) of tank at solvent surface _______ inches
c. Freeboard ratio, (a) above divided by (b) above
______________
8. Furnish manufacturer's Material Safety Data Sheets for all chemicals used in process.
Cold Cleaner Information
9. Equipped with cover: □ yes □ no
Easily operated with
one hand? □ yes □ no
10. Tank dimensions: Length: ________
Width: ________ Height: ________
Tank capacity: ______ gals of solvent
11. Method of draining parts:
____________________
____________________
12. Cold Cleaner has: □ Water cover □ Refrigerated chiller, operating temperature: _______ OF
□ Carbon adsorption □ Other control system: ____________________________________
□ None of the above
13. Ventilation: □ Carbon adsorption system (submit form 5)
□ None □ Other (describe) ______________________________________________

Page 1 of 3

Page 2 of 3
Form 21 – Solvent Metal Cleaning (Degreasers)
(Continued)

Open Top Vapor Degreaser and Conveyorized Degreaser Information
14. Dimensions of top opening:

Length: ______________

Width: _______________

15. Cover: □ yes □ no
Powered: □ yes □ no
Fixed spray
nozzles: □ yes □ no

16. Safety switches:

□ Condenser flow switch and thermostat which shuts off the sump heat if the
condenser coolant is either not circulating or too warm.
□ Device, other than a condenser flow switch and thermostat, which shuts off the
sump heat if the condenser coolant is either not circulating or too warm
(describe):_____________________________________________________
□ Spray safety switch which shuts off the spray pump if the vapor level drops
below any fixed spray nozzle.
□ Vapor level control thermostat which shuts off the sump heat when the vapor
level rises too high.
□ Device, other than a vapor level control thermostat, which shuts off the sump
heat when the vapor level rises too high
(describe):_____________________________________________________
______________________________________________________________
□ None of the above.

17. Indicate the type of pollution controls that open top vapor degreaser has (carbon filter, condenser, etc.):
_________________________________________________________________________________________
Conveyorized Degreaser Information
18. Type of degreaser system:
□ Cold □ Vapor
19. Operating temperature of solvent?
______________
20. Downtime covers:
□ yes □ no
21. Air/vapor interface is: ____________________sq. ft. (attach calculations )
22. Degreaser Controls:
□ Refrigerated freeboard
chiller.
□ Refrigerated condenser
coils.
□ Carbon adsorption.
□ Other control system
excluding condenser coils
and freeboard water
jacket, which reduces
solvent emission
(describe system and %
control efficiency).
□ None of the above.

23. Safety Switches:
□ Condenser flow switch and thermostat which shuts off the sump heat if the
condenser coolant is either not circulating or too warm.
□ Device, other than a condenser flow switch and thermostat, which shuts
off the sump heat if the condenser coolant is either not circulating or too
warm
(describe):________________________________________________
□ Spray safety switch which shuts off the spray pump if the vapor level drops
below any fixed spray nozzle.
□ Vapor level control thermostat which shuts off the sump heat when the
vapor level rises too high.
□ Device, other than a vapor level control thermostat, which shuts off the
sump heat when the vapor level rises too high (describe):
_________________________________________________________
_________________________________________________________
□ None of the above.
24. Conveyorized degreaser is equipped with the following equipment for preventing cleaned parts from carrying out
solvent liquid or vapor: □ None □ Drying tunnel □ Rotating basket □ Other

Page 3 of 3
Form 21 – Solvent Metal Cleaning (Degreasers)
(Continued)

Emissions Calculations (PTE)
25. Calculated emissions for each tank
VOC _________Lbs/hr_____ Tons/yr
HAPs_________Lbs/hr (speciate)______Tons/yr (speciate)
Specify the method of calculations. Also, provide manufacture’s Material Safety Data Sheets (MSDS) for
products being used. Submit calculations as an appendix.

Instructions

NOTE: 1. Submit this form in conjunction with Form 1 and Form 2.
2. Call the Division of Air Quality (DAQ) at [phone] if you have problems or questions in filling out
this form. Ask to speak with a New Source Review engineer. We will be glad to help!

1. Indicate the operating schedule of the degreaser.
2. Indicate the manufacturer, model number, serial number and type of degreaser.
3. Indicate the type of parts that will be cleaned in the degreaser (attach details) and the average and maximum
number of parts cleaner per hour.
4. Indicate the type, quantity, and vapor pressure of the solvent used in the degreaser.
5. Indicate whether the solvent is sprayed, heated, agitated, and to what temperature. Indicate if and how solvent is
agitated.
6. Indicate the amount and way waste solvent is disposed.
7. Indicate the calculations for freebroad ratio.
8. Supply the manufacturer’s material safety data sheets of any chemicals used with this application.
9. Indicate whether the degreaser is covered and if that cover is easily operated with one hand.
10. Supply the tank dimensions and capacity.
11. Describe the method of draining the degreased parts.
12. Indicate if any type of controls is used with the system and what they are.
13. Describe the carbon adsorption system if applicable.
14. Give dimensions of top opening.
15. Indicate if degreaser is equipped with cover and spray nozzles.
16. Indicate the types of safety switches used on the degreaser.
17. Indicate the type of controls used on the open top vapor degreaser.
18. Tell whether the degreaser uses a cold or a vapor system.
19. Give the operating temperature of the solvent.
20. Indicate whether the conveyorized degreaser has downtime covers.
21. Provide calculations showing the air/vapor interface. This is estimated using the dimensions of the open portion of
the tank at the condenser level.
22. Indicate the degreaser controls.
23. Indicate the types of safety switches used on the degreaser.
24. Indicate the type of equipment used to prevent carry out emissions.
25. Supply calculations for all criteria pollutants and HAPs (speciate, please). Use AP-42 or manufacturers’ data to
complete your calculations.

f:\aq\ENGINEER\GENERIC\Forms 2010\Form21 Degreasers.doc
Revised 12/20/10

Swanson Industries EHNS Partners, LLC
Notice of Intent to Modify Approval Order January 2024

APPENDIX F: UDAQ FORM 5 – EMISSIONS INFORMATION
Page 1 of 1
Company___________________________
Site _____________________________
Form 5
Emissions Information
Criteria/GHGs/ HAP’s
Utah Division of Air Quality
New Source Review Section
Potential to Emit* Criteria Pollutants & GHGs
Criteria Pollutants Permitted Emissions
(tons/yr)
Emissions Increases
(tons/yr)
Proposed Emissions
(tons/yr)
PM10 Total
PM10 Fugitive
PM2.5
NOx
SO2
CO
VOC
VOC Fugitive
NH3
Greenhouse Gases CO2e CO2e CO2e
CO2
CH4
N2O
HFCs
PFCs
SF6
Total CO2e
*Potential to emit to include pollution control equipment as defined by R307-401-2.
Hazardous Air Pollutants** (**Defined in Section 112(b) of the Clean Air Act )
Hazardous Air
Pollutant***
Permitted Emissions
(tons/yr)
Emission Increase
(tons/yr)
Proposed
Emission (tons/yr)
Emission Increase
(lbs/hr)
Total HAP
*** Use additional sheets for pollutants if needed

Swanson Industries EHNS Partners, LLC
Notice of Intent to Modify Approval Order January 2024

APPENDIX G: PARTS WASHER SOLVENT SDS

Safety‐Kleen Premium Solvent (Virgin and Recycled) 
Safety Data Sheet          
According To Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules And Regulations And According To The Hazardous Products Regulation  (February 11, 2015). 
Revision Date: 02/24/2022 Date of Issue:  01/26/1995 Supersedes Date: 10/29/2019 Version: 1.0 

02/24/2022  EN (English US)    1/8 

SECTION 1: IDENTIFICATION                                           
1.1.       Product Identifier 
Product Form: Substance 
Product Name: Safety‐Kleen Premium Solvent (Virgin and Recycled) 
CAS‐No.: 64742‐47‐8 
Product Code: 82658 
Synonyms: Safety‐Kleen Premium Gold Solvent; Safety‐Kleen Continued Use Product Solvent (CUP); High Flash Degreasing Solvent; 
Parts Washer Solvent; Petroleum Distillates; Petroleum Naphtha; Naphtha, Solvent; Mineral Spirits 
SDS No.: 82658 
1.2.       Intended Use of the Product    
Cleaning and degreasing metal parts. For professional use only. 
1.3.       Name, Address, and Telephone of the Responsible Party 

Manufacturer    
Safety‐Kleen Systems, Inc. 
42 Longwater Drive 
Norwell, MA 02061‐9149  
1‐800‐669‐5740  
www.safety‐kleen.com 

Supplier in Canada 
Safety‐Kleen Canada, Inc. 
25 Regan Road 
Brampton, Ontario L7A 1B2 
Canada 
1.4.       Emergency Telephone Number    
Emergency Number  : 1‐800‐468‐1760 
SECTION 2: HAZARDS IDENTIFICATION   
2.1.       Classification of the Substance or Mixture 
GHS‐US/CA Classification 

Flam. Liq. 4  H227  
Skin Irrit. 2  H315  
STOT SE 3  H336  
Asp. Tox. 1  H304  

Full text of hazard classes and H‐statements : see section 16 
2.2.       Label Elements 
GHS‐US/CA Labeling  
Hazard Pictograms (GHS‐US/CA)  : 

GHS07  
GHS08 

Signal Word (GHS‐US/CA)  : Danger 
Hazard Statements (GHS‐US/CA)  : H227 ‐ Combustible liquid. 
H304 ‐ May be fatal if swallowed and enters airways. 
H315 ‐ Causes skin irritation. 
H336 ‐ May cause drowsiness or dizziness. 
Precautionary Statements (GHS‐US/CA)  : P210 ‐ Keep away from heat, hot surfaces, sparks, open flames and other ignition 
sources. No smoking. 
P261 ‐ Avoid breathing vapors, mist, or spray. 
P264 ‐ Wash hands, forearms, and other exposed areas thoroughly after handling. 
P271 ‐ Use only outdoors or in a well‐ventilated area. 
P280 ‐ Wear protective gloves, protective clothing, and eye protection. 
P301+P310 ‐ IF SWALLOWED: Immediately call a POISON CENTER or doctor. 
P302+P352 ‐ IF ON SKIN: Wash with plenty of water. 
P304+P340 ‐ IF INHALED: Remove person to fresh air and keep comfortable for 
Safety‐Kleen Premium Solvent (Virgin and Recycled) 
Safety Data Sheet  
According To Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules And Regulations And According To The Hazardous Products Regulation  (February 11, 2015). 

02/24/2022  EN (English US)    2/8 

breathing. 
P312 ‐ Call a POISON CENTER or doctor if you feel unwell. 
P321 ‐ Specific treatment (see section 4 on this SDS). 
P331 ‐ Do NOT induce vomiting. 
P332+P313 ‐ If skin irritation occurs: Get medical advice/attention. 
P362+P364 ‐ Take off contaminated clothing and wash it before reuse. 
P370+P378 ‐ In case of fire: Use appropriate media (see section 5) to extinguish. 
403+P233 ‐ Store in a well‐ventilated place. Keep container tightly closed. 
P405 ‐ Store locked up. 
P501 ‐ Dispose of contents/container in accordance with local, regional, national, and 
international regulations. 

2.3.       Other Hazards  
Exposure may aggravate pre‐existing eye, skin, or respiratory conditions. 
2.4.       Unknown Acute Toxicity (GHS‐US/CA)    
No additional information available 
SECTION 3: COMPOSITION/INFORMATION ON INGREDIENTS   
3.1.  Substance 
Name  Synonyms  Product Identifier  % * 
Petroleum 
distillates, 
hydrotreated 
light 
Distillates (petroleum), hydrotreated light / Distillates, petroleum, hydrotreated 
light / Hydrotreated light distillate / Kerosene, hydrotreated / Petroleum 
distillates, hydrotreated light (A complex combination of hydrocarbons obtained 
by treating a petroleum fraction with hydrogen in the presence of a catalyst.  It 
consists of hydrocarbons having carbon numbers predominantly in the range of 
C9‐16 and boiling in the range of approximately 150‐290°C.)  
(CAS‐No.) 64742‐47‐8  100 
3.2.  Mixture 
Not applicable 
*Percentages are listed in weight by weight percentage (w/w%) for liquid and solid ingredients. Gas ingredients are listed in volume 
by volume percentage (v/v%). 
SECTION 4: FIRST AID MEASURES   
4.1.       Description of First‐aid Measures 
General: Never give anything by mouth to an unconscious person. If you feel unwell, seek medical advice (show the label where 
possible). 
Inhalation: When symptoms occur: go into open air and ventilate suspected area. Obtain medical attention if breathing difficulty 
persists. 
Skin Contact: Immediately remove contaminated clothing. Immediately drench affected area with water for at least 15 minutes. 
Obtain medical attention if irritation develops or persists. 
Eye Contact: Rinse cautiously with water for at least 15 minutes. Remove contact lenses, if present and easy to do. Continue rinsing. 
Obtain medical attention if irritation develops or persists. 
Ingestion: Do NOT induce vomiting. Rinse mouth. Immediately call a POISON CENTER or doctor/physician. 
4.2.       Most Important Symptoms and Effects Both Acute and Delayed 
General: May cause drowsiness and dizziness. Causes skin irritation. May be fatal if swallowed and enters airways. 

Inhalation: High concentrations may cause central nervous system depression such as dizziness, vomiting, numbness, drowsiness, 
headache, and similar narcotic symptoms. 
Skin Contact: Redness, pain, swelling, itching, burning, dryness, and dermatitis. 
Eye Contact: May cause slight irritation to eyes. 
Ingestion: Aspiration into the lungs can occur during ingestion or vomiting and may cause lung injury. 
Chronic Symptoms: Repeated exposure may cause skin dryness or cracking. 
4.3.       Indication of Any Immediate Medical Attention and Special Treatment Needed   
If exposed or concerned, get medical advice and attention. If medical advice is needed, have product container or label at hand. 
Safety‐Kleen Premium Solvent (Virgin and Recycled) 
Safety Data Sheet  
According To Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules And Regulations And According To The Hazardous Products Regulation  (February 11, 2015). 

02/24/2022  EN (English US)    3/8 

SECTION 5: FIRE‐FIGHTING MEASURES   
5.1.       Extinguishing Media 
5.2.       Special Hazards Arising From the Substance or Mixture 
5.3.       Advice for Firefighters 
Precautionary Measures Fire: Exercise caution when fighting any chemical fire.  
Firefighting Instructions: Use water spray or fog for cooling exposed containers. In case of major fire and large quantities: Evacuate 
area. Fight fire remotely due to the risk of explosion. 
Protection During Firefighting: Do not enter fire area without proper protective equipment, including respiratory protection.  
Hazardous Combustion Products: Incomplete combustion is likely to give rise to a complex mixture of airborne solid and liquid 
particulates and gases, including carbon monoxide and unidentified organic and inorganic compounds. If sulfur compounds are 
present in appreciable amounts, combustion products may include also H2S and SOx (sulfur oxides) or sulfuric acid.  
Other Information: Do not allow run‐off from fire fighting to enter drains or water courses. 
5.4.       Reference to Other Sections 
Refer to Section 9 for flammability properties. 

SECTION 6: ACCIDENTAL RELEASE MEASURES   
6.1.       Personal Precautions, Protective Equipment and Emergency Procedures  
General Measures: Avoid breathing (vapor, mist, spray). Do not get in eyes, on skin, or on clothing. Keep away from heat, hot 
surfaces, sparks, open flames, and other ignition sources. No smoking. Use special care to avoid static electric charges. 
6.1.1.      For Non‐Emergency Personnel  
Protective Equipment: Use appropriate personal protective equipment (PPE). 
Emergency Procedures: Evacuate unnecessary personnel. Stop leak if safe to do so. 
6.1.2.      For Emergency Personnel  
Protective Equipment: Equip cleanup crew with proper protection. 
Emergency Procedures: Upon arrival at the scene, a first responder is expected to recognize the presence of dangerous goods, 
protect oneself and the public, secure the area, and call for the assistance of trained personnel as soon as conditions permit. 
Ventilate area. Eliminate ignition sources. 
6.2.       Environmental Precautions  
Prevent entry to sewers and public waters. Avoid release to the environment. Collect spillage. 
6.3.       Methods and Materials for Containment and Cleaning Up  
For Containment: Contain any spills with dikes or absorbents to prevent migration and entry into sewers or streams. As an 
immediate precautionary measure, isolate spill or leak area in all directions. 
Methods for Cleaning Up: Clean up spills immediately and dispose of waste safely. Transfer spilled material to a suitable container 
for disposal. Contact competent authorities after a spill. Absorb and/or contain spill with inert material. Do not take up in 
combustible material such as: saw dust or cellulosic material. Use only non‐sparking tools. 
6.4.       Reference to Other Sections   
See Section 8 for exposure controls and personal protection and Section 13 for disposal considerations. 

SECTION 7: HANDLING AND STORAGE 
7.1.       Precautions for Safe Handling  
Additional Hazards When Processed: Handle empty containers with care because residual vapors are flammable. 
Precautions for Safe Handling:  Wash hands and other exposed areas with mild soap and water before eating, drinking or smoking 
and when leaving work. Avoid prolonged contact with eyes, skin and clothing. Avoid breathing vapors, mist, spray. Take 
precautionary measures against static discharge. Use only non‐sparking tools. 
Hygiene Measures: Handle in accordance with good industrial hygiene and safety procedures.       
7.2.       Conditions for Safe Storage, Including Any Incompatibilities    
Suitable Extinguishing Media: Dry chemical powder, alcohol‐resistant foam, carbon dioxide (CO2). Water may be ineffective but 
water should be used to keep fire‐exposed container cool.  
Unsuitable Extinguishing Media: Do not use a heavy water stream. A heavy water stream may spread burning liquid.  
Fire Hazard: Combustible liquid. Will float and can be reignited on water surface.  
Explosion Hazard: May form flammable or explosive vapor‐air mixture.  
Reactivity: Reacts violently with strong oxidizers. Increased risk of fire or explosion.  
Safety‐Kleen Premium Solvent (Virgin and Recycled) 
Safety Data Sheet  
According To Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules And Regulations And According To The Hazardous Products Regulation  (February 11, 2015). 

02/24/2022  EN (English US)    4/8 

Technical Measures: Comply with applicable regulations. Take action to prevent static discharges. 
Storage Conditions: Store in a dry, cool place. Keep/Store away from direct sunlight, extremely high or low temperatures and 
incompatible materials. Store locked up/in a secure area. Store in a well‐ventilated place. Keep container tightly closed. Keep in 
fireproof place. 
Incompatible Materials: Strong oxidizers. 
7.3.       Specific End Use(s)       
Cleaning and degreasing metal parts. For professional use only. 
SECTION 8: EXPOSURE CONTROLS/PERSONAL PROTECTION 
8.1.       Control Parameters  

For substances listed in section 3 that are not listed here,  there are no established exposure limits from the manufacturer, supplier, 
importer, or the appropriate advisory agency including: ACGIH (TLV), AIHA (WEEL), NIOSH (REL), OSHA (PEL), or Canadian provincial 
governments. 

8.2.       Exposure Controls 
Appropriate Engineering Controls: Ensure adequate ventilation, especially in confined areas. Ensure all national/local regulations 
are observed. Proper grounding procedures to avoid static electricity should be followed. 

Personal Protective Equipment: Gloves. Protective clothing. Safety glasses. Insufficient ventilation: wear respiratory protection. 

Materials for Protective Clothing: Chemically resistant materials and fabrics.  

Hand Protection: Wear protective gloves. 

Eye and Face Protection: Safety glasses with side shields. 

Skin and Body Protection: Wear suitable protective clothing. 

Respiratory Protection: If exposure limits are exceeded or irritation is experienced, approved respiratory protection should be worn. 
In case of inadequate ventilation, oxygen deficient atmosphere, or where exposure levels are not known wear approved respiratory 
protection. 

Other Information: When using, do not eat, drink or smoke. 
SECTION 9: PHYSICAL AND CHEMICAL PROPERTIES 
9.1.       Information on Basic Physical and Chemical Properties 
Physical State  : Liquid 
Appearance  : Clear, colorless to pale yellow 
Odor  : Mild, hydrocarbon 
Odor Threshold  : 30 ppm (based on Stoddard Solvent) 
pH  : No data available 
Evaporation Rate  : < 1 (butyl acetate = 1) 
Melting Point  : ‐49 °C (‐56.2 °F) 
Freezing Point  : ‐43 °C (‐45.4 °F) 
Boiling Point  : 192 – 205 °C (377.6 – 401 °F) 
Flash Point  : > 67 °C [Tagliabue(ASTM D‐56)] (152.6 °F) 
Auto‐ignition Temperature  : 220 °C (428 °F) 
Decomposition Temperature  : No data available 
Flammability (solid, gas)  : Not applicable 
Lower Flammable Limit  : 0.8 % 
Upper Flammable Limit  : 6 % 
Vapor Pressure  : 0.067 kPa (0.5 mmHg)[room temperature) 
Relative Vapor Density at 20°C  : 5 (air = 1) 
Relative Density  : No data available 
Density  : ≈ 6.67 lb/gal 
Specific Gravity  : 0.77 ‐ 0.82 @ @ 16 °C (60 °F) 
Safety‐Kleen Premium Solvent (Virgin and Recycled) 
Safety Data Sheet  
According To Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules And Regulations And According To The Hazardous Products Regulation  (February 11, 2015). 

02/24/2022  EN (English US)    5/8 

Solubility  : Water: Insoluble 
Partition Coefficient: N‐Octanol/Water  : No data available 
Viscosity  : No data available 
VOC content  : 100 % ; 6.4 to 6.7 LB/US gal; 770 to 800 g/l; As per 40 CFR Part 51.100(s); 
Consult with your state/local air pollution control agency and their rules 
and regulations for specific direction in your specific area. 

SECTION 10: STABILITY AND REACTIVITY 
10.1.       Reactivity:      
Reacts violently with strong oxidizers. Increased risk of fire or explosion. 
10.2.       Chemical Stability:       
Combustible liquid. May form flammable or explosive vapor‐air mixture. 
10.3.       Possibility of Hazardous Reactions:       
Hazardous polymerization will not occur. 
10.4.       Conditions to Avoid:      
Direct sunlight, extremely high or low temperatures, heat, hot surfaces, sparks, open flames, incompatible materials, and other 
ignition sources. 
10.5.       Incompatible Materials:      
Strong oxidizers. 
10.6.       Hazardous Decomposition Products:      
None expected under normal conditions of use. 
SECTION 11: TOXICOLOGICAL INFORMATION 
11.1.       Information on Toxicological Effects ‐ Product 
LD50 and LC50 Data:  
No additional information available 
Skin Corrosion/Irritation: Causes skin irritation. 

Eye Damage/Irritation: Not classified 

Respiratory or Skin Sensitization: Not classified 

Germ Cell Mutagenicity: Not classified 

Carcinogenicity: Not classified 

Specific Target Organ Toxicity (Repeated Exposure): Not classified 

Reproductive Toxicity: Not classified 

Specific Target Organ Toxicity (Single Exposure): May cause drowsiness or dizziness.  

Aspiration Hazard: May be fatal if swallowed and enters airways. 
Symptoms/Injuries After Inhalation: High concentrations may cause central nervous system depression such as dizziness, vomiting, 
numbness, drowsiness, headache, and similar narcotic symptoms. 
Symptoms/Injuries After Skin Contact: Redness, pain, swelling, itching, burning, dryness, and dermatitis. 
Symptoms/Injuries After Eye Contact: May cause slight irritation to eyes. 
Symptoms/Injuries After Ingestion: Aspiration into the lungs can occur during ingestion or vomiting and may cause lung injury. 
Chronic Symptoms: Repeated exposure may cause skin dryness or cracking. 

11.2.       Information on Toxicological Effects ‐ Ingredient(s) 
LD50 and LC50 Data:      
w 
Petroleum distillates, hydrotreated light (64742‐47‐8) 
LD50 Oral Rat > 5000 mg/kg 
LD50 Dermal Rabbit > 2000 mg/kg 
LC50 Inhalation Rat > 2.11 mg/l/4h 

Toluene (108‐88‐3) 
Acute Toxicity (Oral): Not classified 
Acute Toxicity (Dermal): Not classified 
Acute Toxicity (Inhalation): Not classified 
Safety‐Kleen Premium Solvent (Virgin and Recycled) 
Safety Data Sheet  
According To Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules And Regulations And According To The Hazardous Products Regulation  (February 11, 2015). 

02/24/2022  EN (English US)    6/8 

LD50 Oral Rat 2600 mg/kg 
LD50 Dermal Rabbit 12000 mg/kg 
LC50 Inhalation Rat 25.7 mg/l/4h 

SECTION 12: ECOLOGICAL INFORMATION 
12.1.       Toxicity   
Ecology ‐ General: Not classified. 
Safety‐Kleen Premium Solvent (Virgin and Recycled) (64742‐47‐8) 
LC50 Fish 1 > 500 mg/l 

12.2.       Persistence and Degradability   
Safety‐Kleen Premium Solvent (Virgin and Recycled) (64742‐47‐8) 
Persistence and Degradability Not established. 

12.3.       Bioaccumulative Potential    
Safety‐Kleen Premium Solvent (Virgin and Recycled) (64742‐47‐8) 
Bioaccumulative Potential Not established. 

12.4.       Mobility in Soil     
No additional information available 
12.5.       Other Adverse Effects     
Other Information: Avoid release to the environment. 
SECTION 13: DISPOSAL CONSIDERATIONS 
13.1.  Waste treatment methods 
Waste Disposal Recommendations: Dispose of contents/container in accordance with local, regional, national, territorial, provincial, 
and international regulations. 
Additional Information: Handle empty containers with care because residual vapors are flammable. 
Ecology ‐ Waste Materials: Avoid release to the environment. 
SECTION 14: TRANSPORT INFORMATION 
The shipping description(s) stated herein were prepared in accordance with certain assumptions at the time the SDS was authored, 
and can vary based on a number of variables that may or may not have been known at the time the SDS was issued. 
14.1.       In Accordance with DOT        
Proper Shipping Name  : COMBUSTIBLE LIQUID, N.O.S. (PETROLEUM DISTILLATES) 
Identification Number  : NA1993  
Packing Group  : III   

Special Provisions: 49CFR173.150. Not regulated for transport in single packages less than 119 US Gal / 450 L (bulk 
package). Non‐bulk packages are not regulated.  
14.2.       In Accordance with IMDG    Not regulated for transport 
14.3.       In Accordance with IATA      Not regulated for transport 
14.4.       In Accordance with TDG       Not regulated for transport 

SECTION 15: REGULATORY INFORMATION 
15.1.       US Federal Regulations 
Safety‐Kleen Premium Solvent (Virgin and Recycled) (64742‐47‐8) 
SARA Section 311/312 Hazard Classes Health hazard ‐ Specific target organ toxicity (single or repeated 
exposure) 
Health hazard ‐ Skin corrosion or Irritation 
Physical hazard ‐ Flammable (gases, aerosols, liquids, or solids) 
Health hazard ‐ Aspiration hazard 

Petroleum distillates, hydrotreated light (64742‐47‐8) 
Listed on the United States TSCA (Toxic Substances Control Act) inventory 
Safety‐Kleen Premium Solvent (Virgin and Recycled) 
Safety Data Sheet  
According To Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules And Regulations And According To The Hazardous Products Regulation  (February 11, 2015). 

02/24/2022  EN (English US)    7/8 

15.2.       US State Regulations 

California Proposition 65 

WARNING: This product can expose you to Benzene, p‐Dichlorobenzene, Ethylbenzene, Cumene, and Naphthalene, which 
are known to the State of California to cause cancer Benzene and Toluene which are known to the State of California to 
cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov. 
Chemical Name (CAS No.)  Carcinogenicity  Developmental 
Toxicity 
Female Reproductive 
Toxicity 
Male Reproductive 
Toxicity 
Benzene (71‐43‐2)  X  X    X 
Ethylbenzene (100‐41‐4)  X     

Naphthalene (91‐20‐3)  X     

Benzene, 1,4‐dichloro‐ (106‐46‐
7) 
X     

Toluene (108‐88‐3)    X     
p‐Dichlorobenzene (106‐46‐7)  X       
Cumene (98‐82‐8)  X       
15.3.       Canadian Regulations 

Petroleum distillates, hydrotreated light (64742‐47‐8) 
Listed on the Canadian DSL (Domestic Substances List) 

SECTION 16: OTHER INFORMATION, INCLUDING DATE OF PREPARATION OR LAST REVISION   

Date of Preparation or Latest 
Revision 
: 02/24/2022  
Other Information  : This document has been prepared in accordance with the SDS requirements of the OSHA 
Hazard Communication Standard 29 CFR 1910.1200 and Canada’s Hazardous Products 
Regulations (HPR) SOR/2015‐17. 
GHS Full Text Phrases: 

‐‐‐‐‐‐ Asp. Tox. 1  Aspiration hazard Category 1 
‐‐‐‐‐‐ Flam. Liq. 4  Flammable liquids Category 4 
‐‐‐‐‐‐ Skin Irrit. 2  Skin corrosion/irritation Category 2 
‐‐‐‐‐‐ STOT SE 3  Specific target organ toxicity — Single exposure, Category 3, Narcosis 
‐‐‐‐‐‐ H227  Combustible liquid  
‐‐‐‐‐‐ H304  May be fatal if swallowed and enters airways 
‐‐‐‐‐‐ H315  Causes skin irritation 
‐‐‐‐‐‐ H336  May cause drowsiness or dizziness 

NFPA Health Hazard : 2 ‐ Materials that, under emergency conditions, can 
cause temporary incapacitation or residual injury. 

NFPA Fire Hazard : 2 ‐ Materials that must be moderately heated or 
exposed to relatively high ambient temperatures 
before ignition can occur. 
NFPA Reactivity Hazard : 1 ‐ Materials that in themselves are normally stable 
but can become unstable at elevated temperatures 
and pressures. 

The information contained herein is correct to the best of our knowledge, information, and belief and is designed only as guidance for 
the handling, use, processing, storage, transportation, disposal, and release of the product. User assumes all risks incident to use of 
this product and shall determine the quality and suitability of the product for its use. Supplier offers no warranty, express or implied, 
whatsoever, including warranties of merchantability or fitness for a particular purpose or otherwise, and specifically disclaims any and 
all liability for incidental, consequential, or other damages arising out the use or misuse of the product. The information provided 
relates only to the specific material provided and may not be valid if used in combination with any other materials or process, unless 
specified herein. 
Safety‐Kleen Premium Solvent (Virgin and Recycled) 
Safety Data Sheet  
According To Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules And Regulations And According To The Hazardous Products Regulation  (February 11, 2015). 

02/24/2022  EN (English US)    8/8 

NA GHS SDS 2015 (Can, US)  
SAFETY DATA SHEET
SECTION 1 – IDENTIFICATION
PRODUCT NAME Omega DeScaler CLASS ACID DETERGENT CLEANER
PRODUCT USE Non hazardous acid cleaner
SUPPLIER Omegasonics PHONE NUMBER 818-359-5635
STREET ADDRESS 330 E. Easy Street, Suite A EMERGENCY PHONE [phone]
CITY, STATE SIMI Valley, CA 93065 DATE 1/01/2021
==================================================================================
SECTION 2 – HAZARD IDENTIFICATION
==================================================================================
CLASSIFICATION UN1760

SIGNAL WORD : DANGER

SYMBOLS:

HAZARD STATEMENT Causes skin burn and serious eye damage..KEEP OUT OF REACH OF CHILDREN.
May corrode aluminum and other amphoteric metals.Do not use on anodized or polished aluminum
PRECAUTION STATEMENT Wear protective goggles, gloves and clothing. Wash contaminated areas with water .
In case of contact consult a physician. Wash hands after use

GENERAL ADVICE. Follow instructions and use good hygienic practices.

EYES – In case of contact wash eyes. Remove contact lenses. Consult a physician

SKIN – Wash skin with water until irritation stops. Wash clothes before reuse. Consult a physician for severe
burns.
INHALATION – Remove victim to fresh air

INGESTATION – Drink large amounts of water to dilute cleaner. Consult physician immediately. Mucosal
Damage can occur counter indicating gastric lavage.
STORAGE – Store in original container indoors between 40 and 100 F.

DISPOSAL – Dispose of in accordance with federal, state, and local regulations. Unused product should be
Disposed of as a hazardous waste.
OTHER HAZARD None known

OTHER INFORMATION

Omega DeScaler
==================================================================================
SECTION 3 – COMPOSITION
==================================================================================
INGREDIEENT CAS NUMBER PERCENT TLV
-------------------------------------------------------------------------------------------------------------------------------------------
GLYCOLIC ACID 79-14-1 >40
--------------------------------------------------------------------------------------------------------------------------------------------

SECTION 4 – FIRST AID
==================================================================================
EYES Wash with water until irritation stops. Consult a physician
SKIN Remove contaminated clothes and wash skin with clean water until irritation subsides. In cases of severe
reaction consult a physician. Wash clothing before reuse.

INGESTION – Drink copious amounts of water to dilute cleaner. Mucosal damage may counter indicate gastric
lavage. Consult a physician. Never give water or anything to an unconscious person..

INHALATION – Move victim to fresh air and make comfortable

OTHER
==================================================================================
SECTION 5 – FIRE HAZARD
==================================================================================
NONE Water based product
-------------------------------------------------------------------------------------------------------------------------------------------
FIREFIGHTING PROCEDURE NA
-------------------------------------------------------------------------------------------------------------------------------------------
EXPLOSION/REACTIVITY DATA Nonreactive and not explosive
==================================================================================
SECTION 6 – ACCIDENTAL SPILL MEASSURES
==================================================================================
Contain spill and clean up excess liquid using a wet vac or mop. Dispose of waste in accordance with federal, state,
and local regulations. Wash area to sewer in compliance with regulations.
==================================================================================
SECTION 7 – HANDLING AND STORAGE
==================================================================================
STORAGE Store in original sealed container indoors between 40 and 100 F. Store apart from reactive products.
------------------------------------------------------------------------------------------------------------------------------------------
HANDLING Use approved hygienic and safety practices when handling product. Wear appropriate protective
goggles, gloves, and clothing. Have adequate ventilation to ensure safe usage.
==================================================================================
SECTION 8- EXPOSURE CONTROLS/PERSONAL PROTECTION
==================================================================================
EXPOSURE GUIDELINES 3 mg/m3 mist only
------------------------------------------------------------------------------------------------------------------------------------------
PERSONAL PROTECTON Wear glasses, goggles, or face shield when handling product. Chemical resistant gloves,
aprons, and boots should be worn when handling product.
-------------------------------------------------------------------------------------------------------------------------------------------
RESPIRATORY PROTECTION Not necessary with normal ventilation. In confined area provide ventilation to
prevent vapor build up.
-------------------------------------------------------------------------------------------------------------------------------------------
HYGENIC PRACTICES Wash hands after using and before eating
Omega DeScaler

SECTION 9 – PHYSICAL AND CHEMICAL PROPERTIES
==============================================================================
APPEARANCE – Clear amber liquid with a sharp detergent odor
----------------------------------------------------------------------------------------------------------------------------------
BOILING POINT 212 SPG 1.155
VAPOR PRESSURE 25 PERCENT VOLITLE >70
EVAPORATION RATE 1 (water = 1) SOLUBILITY 100%
pH 2 VAPOR DENSITY NA
FLAMMABILTY Non flammable REACTIVITY Stable
===============================================================================
SECTION 10 – STABILITY AND REACTIVITY
==================================================================================
STABILITY Stable REACTIVITY Not reactive
-------------------------------------------------------------------------------------------------------------------------------------------
HAZARDOUS POLMERIZTION Will not occur FLAMMABILTY Water based non flammable
-------------------------------------------------------------------------------------------------------------------------------------------
INCOMPATABLE MATERIALS. Strong alkalai and oxidizers. Do not mix product with other products
-------------------------------------------------------------------------------------------------------------------------------------------
SECTION 11 – TOXILOGICAL INFORMAATION
==================================================================================
SYMPTONS FOR ROUTES OF EXPOSURE
INHALATION Mucosal irritation to nose and respiratory tract.
SKIN – Irritation and redness and possible chemical burns.
EYE CONTACT – Irritation and redness
INGESTION – Chemical burns to mouth, throat and stomach. Pain, nausea, vomiting, and diarrhea
==================================================================================
SECTION 12 – ECOLOGICAL INFORMATION
==================================================================================
Product is water soluble, biodegradable and non toxic.
==================================================================================
SECTION 13 – DISPOSAL CONSIDERATIONS
==================================================================================
Neutralize then sewer or landfill in accordance with local, state, and federal regulations. Unused product is
considered a hazardous waste.
==================================================================================
SECTION 14 – TRANSPORTATION
==================================================================================
Ship in DOT approved containers using approved transportation means.
==================================================================================
SECION 15 – REGULATORY INFORMATION
==================================================================================
DOT: UN1760 CORROSIVE LIQUID NOS(GLYCOLIC ACID)8, PGIII
==================================================================================
SECTION 16 – OTHER INFFORMATION
==============================================================================
NFPA Health 2 Flammability 0 Instability 0 Other
---------------------------------------------------------------------------------------------------------------------------------
GEENERAL DISCLAIMER Information provided is correct to the best of our knowledge at current time. Since use
of the product is out of the control of the supplier no warranty for the suitability and use of the product in an application
is given or implied.

Omega DeScaler

Swanson Industries EHNS Partners, LLC
Notice of Intent to Modify Approval Order January 2024
APPENDIX H: EMISSIONS CALCULATIONS

Appendix H - Emissions Calculations
Parts Washer VOC and HAP Emissions
Total Number of Parts Washer Units:6
AP-42 Table 4.6-2, Cold Cleaning Entire Unit Solvent Loss:0.33 tons/year/unit
660 pounds/year/unit
0.08 pounds/hour1/unit
Total Potential-To-Emit from Parts Washers:1.98 tons/year
3960 pounds/year
0.45 pounds/hour1
1 Assumes 8,760 hours per year
Ultrasonic Cleaner Potential Emissions:1 gallon/month of cleaner
115.45 pounds/year of cleaner
70%VOC Content
80.82 VOC pounds/year
0.04 VOC tons/year
Table H-1: Proposed Permitted Emission Limits for VOC and Speciated HAPs
Solvent Content2 Maximum Annual
Emissions
Maximum Annual
Emissions
(wt%)(lbs/year)(tons/year)
100%4041 2.02
100%3960 1.98
100%3960 1.98
100%3960 1.98
100%3960 1.98
100%3960 1.98
100%3960 1.98
Toluene (HAP)
Cumene (HAP)
Pollutant
2 The Safety Kleen SDS indicates the presence of benzene, ethyl benzene, naphthalene, toluene,
and cumene but does not speciate concentration of each HAP. Safety Kleen does not have
additional information regarding component concentrations. Therefore, the conservative
assumption that the solvent contains 100% of each HAP has been employed in the absence of
conclusive data.
Volatile Organic Compounds
Naphthalene (HAP)
Ethyl Benzene (HAP)
Benzene (HAP)
Total HAPs
Swanson Industries
Notice of Intent to Modify Approval Order
EHNS Partners, LLC
January 2024
Appendix H - Emissions Calculations
Table H-2: Facility-Wide Permitted Emission Limits
Current Pemitted
Emissions (TPY)Change (TPY)Proposed
Emissions (TPY)
687.00 0 687.00
0.71 0 0.71
1.74 0 1.74
4.72 0 4.72
0.72 0 0.72
0.08 0 0.08
4.80 2.02 6.82
Current Pemitted
Emissions (TPY)Change (TPY)Proposed
Emissions (TPY)
0.02 0 0.02
0.02 0 0.02
0.02 0 0.02
0.14 2.02040883 2.16
3.15 2.02040883 5.17
--2.02040883 2.02
--2.02040883 2.02
--2.02040883 2.02
--2.02040883 2.02
Current Pemitted
Emissions (TPY)Change (TPY)Proposed
Emissions (TPY)
3.34 1.98 5.32Total HAPs
Xylenes
Benzene
Ethyl Benzene
Naphthalene
Cumene
Total Hazardous Air
Pollutants
Chromium Compounds
Manganese
Nickel
Toluene
Particulate Matter - PM2.5
Hazardous Air Pollutants
Nitrogen Oxides
Carbon Monoxide
CO2 Equivalent
Criteria Pollutant
Volatile Organic Compounds
Sulfur Dioxide
Particulate Matter - PM10
Swanson Industries
Notice of Intent to Modify Approval Order
EHNS Partners, LLC
January 2024