DAQ-2025-000272

DAQE-AN115570002-25

{{$d1 }}

Dennis Sortor
Harper Contracting, Inc.
8201 West 5400 South
Salt Lake City, UT 84118
[e-mail]

Dear Mr. Sortor:

Re: Approval Order: Administrative Amendment to Approval Order DAQE-AN0115570001-10 for a
10-Year Review and Permit Updates
Project Number: N115570002

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

The project engineer for this action is Lucia Mason, who can be contacted at [phone] or
[e-mail]. Future correspondence on this AO should include the engineer's name as well as the
DAQE number shown on the upper right-hand corner of this letter.

Sincerely,

{{$s }}

Bryce C. Bird
Director

BCB:LM:jg

cc: Salt Lake County Health Department

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

SPENCER J. COX
Governor
DEIDRE HENDERSON
Lieutenant Governor

Department of
Environmental Quality

Kimberly D. Shelley
Executive Director

DIVISION OF AIR QUALITY
Bryce C. Bird
Director

January 9, 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-AN115570002-25
Administrative Amendment to Approval Order
DAQE-AN0115570001-10 for a 10-Year Review
and Permit Updates

Prepared By
Lucia Mason, Engineer
[phone]
[e-mail]

Issued to
Harper Contracting, Inc. - Pit #5

Issued On
{{$d2 }}

Issued By

{{$s }}

Bryce C. Bird
Director
Division of Air Quality

January 9, 2025
TABLE OF CONTENTS

TITLE/SIGNATURE PAGE ....................................................................................................... 1
GENERAL INFORMATION ...................................................................................................... 3
CONTACT/LOCATION INFORMATION ............................................................................... 3
SOURCE INFORMATION ........................................................................................................ 3
General Description ................................................................................................................ 3
NSR Classification .................................................................................................................. 3
Source Classification .............................................................................................................. 3
Applicable Federal Standards ................................................................................................. 3
Project Description.................................................................................................................. 4
SUMMARY OF EMISSIONS .................................................................................................... 4
SECTION I: GENERAL PROVISIONS .................................................................................... 4
SECTION II: PERMITTED EQUIPMENT .............................................................................. 5
SECTION II: SPECIAL PROVISIONS ..................................................................................... 5
PERMIT HISTORY ..................................................................................................................... 8
ACRONYMS ................................................................................................................................. 9

DAQE-AN115570002-25
Page 3

GENERAL INFORMATION

CONTACT/LOCATION INFORMATION

Owner Name Source Name
Harper Contracting, Inc. Harper Contracting, Inc. - Pit #5

Mailing Address Physical Address
8201 West 5400 South 7400 South 6400 West
Salt Lake City, UT 84118 Kearns, UT 84118

Source Contact UTM Coordinates
Name: Dennis Sortor 411,708 m Easting
Phone: [phone],496,777 m Northing
Email: [e-mail] Datum NAD83
UTM Zone 12
SIC code 1442 (Construction Sand & Gravel)

SOURCE INFORMATION
General Description
Harper Contracting, Inc. (Harper Contracting) operates an aggregate pit in Kearns, Salt Lake County.
Equipment includes crushers, screens, conveyors, assorted conveyors and stackers, one (1) feeder, two (2)
diesel-fired engines, and associated loaders, dozers, and drills. Harper Contracting can produce up to 1.5
million tons of aggregate material per year.

NSR Classification
10-Year Review

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

Applicable Federal Standards
NSPS (Part 60), A: General Provisions
NSPS (Part 60), OOO: Standards of Performance for Nonmetallic Mineral Processing Plants
MACT (Part 63), A: General Provisions
MACT (Part 63), ZZZZ: National Emissions Standards for Hazardous Air Pollutants for
Stationary Reciprocating Internal Combustion Engines
Title V (Part 70) Area Source
DAQE-AN115570002-25
Page 4

Project Description
The DAQ is conducting a 10-year review and is updating the language and format of the 2010 AO.

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 6127.00
Carbon Monoxide 0 8.11
Nitrogen Oxides 0 35.89
Particulate Matter - PM10 0 14.70
Particulate Matter - PM2.5 14.70
Sulfur Dioxide 0 2.32
Volatile Organic Compounds 0 1.09

SECTION I: GENERAL PROVISIONS

I.1 All definitions, terms, abbreviations, and references used in this AO conform to those used in the UAC R307 and 40 CFR. Unless noted otherwise, references cited in these AO conditions
refer to those rules. [R307-101] I.2 The limits set forth in this AO shall not be exceeded without prior approval. [R307-401]
I.3 Modifications to the equipment or processes approved by this AO that could affect the emissions covered by this AO must be reviewed and approved. [R307-401-1]
I.4 All records referenced in this AO or in other applicable rules, which are required to be kept by the owner/operator, shall be made available to the Director or Director's representative upon request, and the records shall include the two-year period prior to the date of the request. Unless otherwise specified in this AO or in other applicable state and federal rules, records shall be kept for a minimum of two (2) years. [R307-401-8]
I.5 At all times, including periods of startup, shutdown, and malfunction, owners and operators shall, to the extent practicable, maintain and operate any equipment approved under this AO, including associated air pollution control equipment, in a manner consistent with good air pollution control practice for minimizing emissions. Determination of whether acceptable operating and maintenance procedures are being used will be based on information available to the Director which may include, but is not limited to, monitoring results, opacity observations, review of operating and maintenance procedures, and inspection of the source. All maintenance performed on equipment authorized by this AO shall be recorded. [R307-401-4] I.6 The owner/operator shall comply with UAC R307-107. General Requirements: Breakdowns. [R307-107]
DAQE-AN115570002-25
Page 5

I.7 The owner/operator shall comply with UAC R307-150 Series. Emission Inventories. [R307-150]

SECTION II: PERMITTED EQUIPMENT
II.A THE APPROVED EQUIPMENT
II.A.1 Pit #5
II.A.2 One (1) Jaw Crusher
Capacity: 250 tons per hour (tph) NSPS Subpart OOO II.A.3 One (1) Cone Crusher Capacity: 250 tph NSPS Subpart OOO
II.A.4 One (1) Triple Deck Screen Capacity: 250 tph NSPS Subpart OOO II.A.5 Associated Conveyors, Stackers, etc. The transfer points on these processes shall not exceed 25 NSPS Subpart OOOO
II.A.6 One (1) Feeder Capacity: 250 tph II.A.7 Two (2) Diesel Generators Rating: 450 kW total capacity MACT Subpart ZZZZ
II.A.8 Associated Loaders, Dozers, Drills, etc.

SECTION II: SPECIAL PROVISIONS II.B REQUIREMENTS AND LIMITATIONS II.B.1 Site-wide Requirements:
II.B.1.a The owner/operator shall not produce more than 1,500,000 tons of aggregate material per rolling 12-month period. [R307-401-8]
DAQE-AN115570002-25
Page 6

II.B.1.a.1 To determine compliance with the above production limit, the owner/operator shall: A. Determine production using truck scale records or vendor receipts B. Calculate a new 12-month total by the 25th day of each month using data from the previous 12 months C. Keep records on a daily basis D. Keep records for all periods the plant is in operation. [R307-401-8] II.B.1.b The owner/operator shall not exceed the following hours of operation:
A. 3,744 operating hours total for the combination of all crushing plants, including the
associated diesel generators, per rolling 12-month period
B. 2,050 operating hours total for the screening plant, including the associated diesel
generator, per rolling 12-month period.
[R307-401-8]

II.B.1.b.1 To determine compliance with the limits on operating hours, the owner/operator shall: A. Determine hours of operation by supervisor monitoring and maintaining an operations log B. Calculate a new 12-month total by the 25th day of each month using data from the previous 12 months C. Keep records on a daily basis D. Keep records for all periods the plant is in operation. [R307-401-8] II.B.1.c The owner/operator shall not exceed the following values:

A. Crushers - 12% opacity
B. Screens - 7% opacity
C. Conveyor transfer points - 7% opacity

D. Conveyor drop points - 20% opacity

E. Diesel engines - 20% opacity

F. All other points - 20% opacity.

[R307-312-4, R307-401-8]

II.B.1.c.1 Opacity observations of emissions from stationary sources shall be conducted according to 40 CFR 60, Appendix A, Method 9. [R307-305-3]
DAQE-AN115570002-25
Page 7

II.B.1.d The owner/operator shall install water sprays or chemical dust suppression sprays at the emission points below to comply with the opacity limits in this AO, unless the temperature is below freezing: A. All crushers B. All screens C. All conveyor transfer points. [R307-401-8] II.B.1.e The owner/operator shall use only #2 fuel oil as fuel. [R307-401-8]
II.B.1.f The owner/operator shall only combust diesel fuel in the generator engines that meet the definition of ultra-low sulfur diesel (ULSD). ULSD has a sulfur content of 15 ppm or less. [40 CFR 63 Subpart ZZZZ]
II.B.2 Haul Roads and Fugitive Dust Requirements:
II.B.2.a The owner/operator shall not exceed two (2) miles of haul roads in round-trip length. [R307-401-8]
II.B.2.b The owner/operator shall not allow visible fugitive dust emissions from haul-road traffic and mobile equipment in operational areas exceed 20% opacity on site and 10% at the property
boundary. [R307-309-5]

II.B.2.b.1 Visible emissions determinations for traffic sources shall use procedures similar to Method 9. The normal requirement for observations to be made at 15-second intervals over a six-minute period, however, shall not apply. Opacity readings shall be made no less than 1/2 the vehicle length behind the vehicle and at no less than approximately 1/2 the height of the vehicle. [R307-309-5]
II.B.2.c The owner/operator shall apply water spray and/or chemical treatment on unpaved haul roads and operational areas used by mobile equipment such that the surface is in a damp/moist
condition to comply with the opacity limits in this AO, unless the temperature is below freezing.
The Director shall approve a chemical treatment plan if any chemical treatment is used. [R307-401-8]

II.B.2.c.1 The owner/operator shall keep records of the following regarding water spray/chemical treatment when the plant is in operation: A. Date of application B. Number of treatments made C. Time of day treatments were made D. Records of temperature if the temperature is below freezing E. Records of wind speeds when wind speeds exceed 25 mph. This record is not required if the owner/operator does not claim the wind speed exemption from the opacity limit on fugitive dust. [R307-401-8]
DAQE-AN115570002-25
Page 8

II.B.2.d The owner/operator shall limit vehicle speed along the haul roads to 15 miles per hour. The owner/operator shall post vehicle speed on site at the start of the haul road such that it is clearly visible from the haul road. [R307-401-8] II.B.2.e The owner/operator shall not exceed 10 acres of disturbed area. [R307-401-8]

II.B.2.f The owner/operator shall not exceed a total area of storage piles of ten (10) acres, with not more than five (5) acres of storage piles being active. [R307-401-8]
II.B.2.g The owner/operator shall water storage piles and unpaved operational areas to comply with the opacity limits in this AO. [R307-401-8]

PERMIT HISTORY

This Approval Order shall supersede (if a modification) or will be based on the following documents:
Supersedes AO DAQE-AN0115570001-10 dated June 9, 2010
DAQE-AN115570002-25
Page 9

ACRONYMS

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

40 CFR Title 40 of the Code of Federal Regulations
AO Approval Order
BACT Best Available Control Technology
CAA Clean Air Act
CAAA Clean Air Act Amendments
CDS Classification Data System (used by 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-

RN115570002 January 3, 2025 Dennis Sortor
Harper Contracting, Inc. 8201 West 5400 South @@Delete this line@@
@@Delete this line@@ Salt Lake City, UT 84118 [e-mail]
Dear Dennis Sortor, Re: Engineer Review - 10-Year Review and Permit Updates: Administrative Amendment to Approval Order (AO) DAQE-AN0115570001-10, dated June 9, 2010, for a 10-Year Review and Permit Updates Project Number: N115570002 The DAQ requests a company representative review and sign the attached Engineer Review (ER). This ER identifies all applicable elements of the New Source Review (NSR) permitting program. Harper Contracting, Inc. should complete this review within 10 business days of receipt.
Harper Contracting, Inc. should contact Lucia Mason at [phone] if there are questions or concerns with the review of the draft permit conditions. Upon resolution of your concerns, please email Lucia Mason at [e-mail] the signed cover letter. Upon receipt of the signed cover letter, the DAQ will prepare an Approval Order (AO) for signature by the DAQ Director.
If Harper Contracting, Inc. does not respond to this letter within 10 business days, the project will move forward without source concurrence. If Harper Contracting, 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 N115570002: Harper Contracting, Inc.- Pit #5 January 3, 2025 Page 1
UTAH DIVISION OF AIR QUALITY
ENGINEER REVIEW

SOURCE INFORMATION
Project Number N115570002 Owner Name Harper Contracting, Inc. Mailing Address 8201 West 5400 South
@@Delete this line@@ @@Delete this line@@ Salt Lake City, UT, 84118
Source Name Harper Contracting, Inc.- Pit #5 Source Location 7400 South 6400 West
@@Delete this line@@ @@Delete this line@@ Kearns, UT 84118 UTM Projection 411,708 m Easting, 4,496,777 m Northing UTM Datum NAD83 UTM Zone UTM Zone 12 SIC Code 1442 (Construction Sand & Gravel) Source Contact Dennis Sortor Phone Number [phone]
Email [e-mail] Billing Contact Dennis Sortor
Phone Number [phone] Email [e-mail]
Project Engineer Lucia Mason, Engineer Phone Number [phone] Email [e-mail] Notice of Intent (NOI) Submitted October 24, 2024 Date of Accepted Application November 18, 2024

Engineer Review N115570002: Harper Contracting, Inc.- Pit #5 January 3, 2025 Page 2
SOURCE DESCRIPTION General Description
Harper Contracting operates an aggregate pit in Kearns, Salt Lake County. Equipment includes crushers, screens, conveyors, assorted conveyors and stackers, one (1) feeder, two (2) diesel fired engines and associated loaders, dozers and drills. Harper Contracting can produce up to 1.5
million tons of aggregate material per year. NSR Classification: 10 Year Review Source Classification Located in , Northern Wasatch Front O3 NAA, Salt Lake City UT PM2.5 NAA, Salt Lake County SO2 NAA, Salt Lake County Airs Source Size: SM
Applicable Federal Standards NSPS (Part 60), A: General Provisions NSPS (Part 60), OOO: Standards of Performance for Nonmetallic Mineral Processing Plants
MACT (Part 63), A: General Provisions MACT (Part 63), ZZZZ: National Emissions Standards for Hazardous Air Pollutants for Stationary Reciprocating Internal Combustion Engines
Title V (Part 70) Area Source Project Proposal Administrative Amendment to Approval Order (AO) DAQE-AN0115570001-10, dated June 9, 2010, for a 10-Year Review and Permit Updates
Project Description This is an administrative amendment to Approval Order (AO) DAQE-AN0115570001-10, dated June 9, 2010. The DAQ is conducting a 10-year review and is updating the language and format of the 2010 AO. EMISSION IMPACT ANALYSIS
This is a 10-year review. There are no changes to equipment or emissions at this time. Therefore, no modeling is required. ~tab~ On January 3, 2025, the source confirmed the facility's address and UTM coordinates. ~tab~ . [Last updated January 3, 2025]

Engineer Review N115570002: Harper Contracting, Inc.- Pit #5 January 3, 2025 Page 3
SUMMARY OF EMISSIONS
The emissions listed below are an estimate of the total potential emissions from the source. Some rounding of emissions is possible.
Criteria Pollutant Change (TPY) Total (TPY) CO2 Equivalent 6127.00 Carbon Monoxide 0 8.11
Nitrogen Oxides 0 35.89
Particulate Matter - PM10 0 14.70
Particulate Matter - PM2.5 14.70
Sulfur Dioxide 0 2.32
Volatile Organic Compounds 0 1.09 Hazardous Air Pollutant Change (lbs/yr) Total (lbs/yr) Change (TPY) Total (TPY)

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

Engineer Review N115570002: Harper Contracting, Inc.- Pit #5 January 3, 2025 Page 4
Review of BACT for New/Modified Emission Units 1. BACT review regarding 10-Year Review
This is a 10-year review. There are no changes to equipment or emissions at this time. Therefore, a BACT analysis is not required. ~tab~
. [Last updated November 19, 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 ~IND~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 ~IND~The limits set forth in this AO shall not be exceeded without prior approval. [R307-
401] I.3 ~IND~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 ~IND~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 ~IND~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 ~IND~The owner/operator shall comply with UAC R307-107. General Requirements: Breakdowns. [R307-107]

I.7 ~IND~The owner/operator shall comply with UAC R307-150 Series. Emission Inventories. [R307-150]

Engineer Review N115570002: Harper Contracting, Inc.- Pit #5 January 3, 2025 Page 5
SECTION II: PERMITTED EQUIPMENT The intent is to issue an air quality AO authorizing the project with the following recommended conditions and that failure to comply with any of the conditions may constitute a violation of the
AO. (New or Modified conditions are indicated as “New” in the Outline Label): II.A THE APPROVED EQUIPMENT
II.A.1 ~B~Pit #5~B~ ~tab~
II.A.2 ~B~One (1) Jaw Crusher~B~ Capacity: 250 tons per hour (tph) NSPS Subpart OOO ~tab~
II.A.3 ~B~One (1) Cone Crusher~B~ Capacity: 250 tph NSPS Subpart OOO
~tab~
II.A.4 ~B~One (1) Triple Deck Screen~B~ Capacity: 250 tph NSPS Subpart OOO
~tab~
II.A.5 ~B~Associated Conveyors, Stackers, etc.~B~ The transfer points on these processes shall not exceed 25 NSPS Subpart OOOO ~tab~
II.A.6 ~B~One (1) Feeder~B~ Capacity: 250 tph ~tab~ II.A.7 ~B~Two (2) Diesel Generators~B~ Rating: 450 kW total capacity
MACT Subpart ZZZZ ~tab~ II.A.8 ~B~Associated Loaders, Dozers, Drills, etc.~B~ ~tab~
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 NEW ~BUTOC~Site-wide Requirements:~BUTOC~
II.B.1.a NEW The owner/operator shall not produce more than 1,500,000 tons of aggregate material per rolling 12-month period. [R307-401-8]

Engineer Review N115570002: Harper Contracting, Inc.- Pit #5 January 3, 2025 Page 6
II.B.1.a.1 NEW To determine compliance with the above production limit the owner/operator shall: ~tab~ A.~tab~Determine production using truck scale records or vendor receipts
~tab~ B.~tab~Calculate a new 12-month total by the 25th day of each month using data from the ~tab~previous 12 months
~tab~ C.~tab~Keep records on a daily basis ~tab~
D.~tab~Keep records for all periods the plant is in operation ~tab~ . [R307-401-8]
II.B.1.b NEW The owner/operator shall not exceed the following hours of operation: ~tab~ A.~tab~3,744 operating hours total for the combination of all crushing plants, including the
~tab~associated diesel generators, per rolling 12-month period. ~tab~ B.~tab~2,050 operating hours total for the screening plant, including the associated diesel
~tab~generator, per rolling 12-month period. ~tab~ . [R307-401-8]
II.B.1.b.1 NEW To determine compliance with the limits on operating hours, the owner/operator shall: ~tab~ A.~tab~Determine hours of operation by supervisor monitoring and maintaining an operations
~tab~log ~tab~ B.~tab~Calculate a new 12-month total by the 25th day of each month using data from ~tab~the previous 12 months ~tab~ C.~tab~Keep records on a daily basis
~tab~ D.~tab~Keep records for all periods the plant is in operation ~tab~ . [R307-401-8]

Engineer Review N115570002: Harper Contracting, Inc.- Pit #5 January 3, 2025 Page 7
II.B.1.c NEW The owner/operator shall not exceed the following values: ~tab~ A.~tab~Crushers - 12% opacity
~tab~ B.~tab~Screens - 7% opacity ~tab~
C.~tab~Conveyor transfer points - 7% opacity ~tab~ D.~tab~Conveyor drop points - 20% opacity
~tab~ E.~tab~Diesel engines - 20% opacity ~tab~ F.~tab~All other points - 20% opacity ~tab~ . [R307-312-4, R307-401-8]
II.B.1.c.1 NEW Opacity observations of emissions from stationary sources shall be conducted according to 40 CFR 60, Appendix A, Method 9. [R307-305-3]
II.B.1.d
NEW
The owner/operator shall install water sprays or chemical dust suppression sprays at the
emission points below to comply with the opacity limits in this AO, unless the temperature is below freezing: ~tab~
A.~tab~All crushers ~tab~ B.~tab~All screens
~tab~ C.~tab~All conveyor transfer points ~tab~ . [R307-401-8] II.B.1.e NEW The owner/operator shall use only #2 fuel oil as fuel. [R307-401-8]
II.B.1.f NEW The owner/operator shall only combust diesel fuel in the generator engines that meets the definition of ultra-low sulfur diesel (ULSD). ULSD has a sulfur content of 15 ppm or less. [40 CFR 63 Subpart ZZZZ] II.B.2 NEW ~BUTOC~Haul Roads and Fugitive Dust Requirements:~BUTOC~
II.B.2.a
NEW
The owner/operator shall not exceed two (2) miles of haul roads in round-trip length. [R307-
401-8] II.B.2.b NEW The owner/operator shall not allow visible fugitive dust emissions from haul-road traffic and mobile equipment in operational areas exceed 20% opacity on site and 10% at the property boundary. [R307-309-5]

Engineer Review N115570002: Harper Contracting, Inc.- Pit #5 January 3, 2025 Page 8
II.B.2.b.1 NEW Visible emissions determinations for traffic sources shall use procedures similar to Method 9. The normal requirement for observations to be made at 15-second intervals over a six-minute period, however, shall not apply. Opacity readings shall be made no less than 1/2 the vehicle
length behind the vehicle and at no less than approximately 1/2 the height of the vehicle. [R307-309-5]
II.B.2.c NEW The owner/operator shall apply water spray and/or chemical treatment on unpaved haul roads and operational areas used by mobile equipment such that the surface is in a damp/moist condition to comply with the opacity limits in this AO, unless the temperature is below freezing. The Director shall approve a chemical treatment plan if any chemical treatment is used. [R307-401-8] II.B.2.c.1 NEW The owner/operator shall keep records of the following regarding water spray/chemical treatment when the plant is in operation: ~tab~ A.~tab~Date of application ~tab~ B.~tab~Number of treatments made ~tab~ C.~tab~Time of day treatments were made
~tab~ D.~tab~Records of temperature if the temperature is below freezing ~tab~
E.~tab~Records of wind speeds when wind speeds exceed 25 mph. This record is not ~tab~required if the owner/operator does not claim the wind speed exemption from the ~tab~opacity limit on fugitive dust.
~tab~ . [R307-401-8]
II.B.2.d
NEW
The owner/operator shall limit vehicle speed along the haul roads to 15 miles per hour. The
owner/operator shall post vehicle speed on site at the start of the haul road such that it is clearly visible from the haul road. [R307-401-8]
II.B.2.e NEW The owner/operator shall not exceed 10 acres of disturbed area. [R307-401-8]
II.B.2.f
NEW
The owner/operator shall not exceed a total area of storage piles of 10 acres with not more
than five acres of storage piles being active. [R307-401-8] II.B.2.g NEW The owner/operator shall water storage piles and unpaved operational areas to comply with the opacity limits in this AO. [R307-401-8]

Engineer Review N115570002: Harper Contracting, Inc.- Pit #5 January 3, 2025 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-AN0115570001-10 dated June 9, 2010
REVIEWER COMMENTS
1. Comment regarding 10-Year Review:
This is a 10-year review. The language and formatting of this AO have been updated to reflect the style of modern permits. PTE values and the approved equipment list have been moved to respective new sections. The source is not modifying and/or installing any equipment.
The opacity limits in condition II.B.1.b of the 2010 AO have been updated according to R307-312-4.
The PTE for PM2.5 and CO2e were not specified in the previous AO (DAQE-AN0115570001-10, dated June 9, 2010) and have been added to the Summary of Emissions. For a conservative estimate, the PTE of PM2.5 was set equal to the PTE of PM10 (14.70 tpy). CO2e was calculated based two (2) 450 kW diesel engines and 8,760 annual operational hours for both engines. CO2e emission factors
and global warming potentials were sourced from AP-42 Table 3.3-1 & Table 3.4-1.
There are no other changes to the emission estimates at this time. ~tab~ [Last updated December 27, 2024] 2. Comment regarding Compliance Notes: AO DAQE-AN0115570001-10 did not specify the applicability of 40 CFR 63 Subpart ZZZZ. Due to the engines permitted in this AO (Equipment ID II.A.7), MACT Subpart ZZZZ is applicable to the facility. The source should review the MACT Subpart ZZZZ to ensure compliance. ~tab~
On November 8, 2024, the source confirmed the facility is closed but that they would like to maintain the site's AO in case operations restart. The source must notify the DAQ if they intend on restarting operations. The source must also notify the DAQ and comply with the conditions
regarding modified sources in UAC R307-401 if any equipment that was not approved in AO DAQE-AN0115570001-10 is brought on site. ~tab~
As part of maintaining this AO, the source will be charged annual aggregate and NSR fees. ~tab~ . [Last updated December 27, 2024] 3. Comment regarding Federal Standard Applicability: NSPS, 40 CFR 60 NSPS Subpart OOO (Standards of Performance for Nonmetallic Mineral Processing Plants) applies to facilities that operate crushers, screens and belt conveyors among other aggregate processing equipment. The facility includes crushers, screens and other aggregate processing equipment. Therefore, Subpart OOO applies. ~tab~ Subpart IIII (Standards of Performance for Stationary Compression Ignition Internal Combustion Engines) applies to compression ignition internal combustion engines. Subpart IIII applies to non-

Engineer Review N115570002: Harper Contracting, Inc.- Pit #5 January 3, 2025 Page 10
fire pump engines where the model year is 2007 or later. The diesel generators listed in Equipment ID II.A.7 were permitted in AO DAQE-989-01, dated December 7, 2001. Thus, the engines were
manufactured before 2007 and are except from Subpart IIII. ~tab~ NESHAP, 40 CFR 61 There are no applicable NESHAP subparts. ~tab~ MACT, 40 CFR 63 MACT Subpart ZZZZ (National Emission Standards for Hazardous Air Pollutants for Stationary Reciprocating Internal Combustion Engines) applies to facilities which operate reciprocating internal combustion engines. The two generators at the facility fall under this definition. Thus, Subpart ZZZZ applies. ~tab~
[Last updated December 4, 2024] 4. Comment regarding Title V Applicability:
Title V of the 1990 Clean Air Act (Title V) applies to the following:
1. Any major source 2. Any source subject to a standard, limitation, or other requirement under Section 111 of the Act, Standards of Performance for New Stationary Sources; 3. Any source subject to a standard or other requirement under Section 112 of the Act, Hazardous Air Pollutants. 4. Any Title IV affected source.
This facility is not a major source and is not a Title IV source. However, the facility is subject to 40 CFR 60 (NSPS) Subpart OOO under Section 111 of the Act. Therefore, Title V regulations apply to the facility as an area source. ~tab~ . [Last updated December 4, 2024]

Engineer Review N115570002: Harper Contracting, Inc.- Pit #5 January 3, 2025 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
SUMMARY
One (1) Engine # of Engines Total Annual Emissions
CO2e 3,064 2 6127
tpy
Equipment Details
Rating 603 hp = (450 kw)
Operational Hours 8,760 hours/year
Sulfur Content 15 ppm or 0.0015%
Criteria Pollutant
Emission
Standards
(g/hp-hr)
Emission Factor
(lb/hp-hr)
Emission
Rate
(lbs/hr)
Emission
Total
(tons/year)Reference
NOX 0.024 14.47 63.39
CO 5.50E-03 3.32 14.53
PM10 7.00E-04 0.42 1.85
PM2.5 7.00E-04 0.42 1.85
VOC 6.42E-04 0.39 1.69
SO2 1.21E-05 0.01 0.03 AP-42 Table 3.4-1
HAP 0.01 0.03 See Below
Green House Gas Pollutant
Global
Warming
Potential
Emission Factor
(lb/hp-hr)
Emission
Rate
(lbs/hr)
Emission
Total
(tons/year)Reference
CO2 (mass basis)1 1.16 699 3,064
Methane (mass basis)25 6.35E-05 0 0CO2e3,068
Hazardous Air Pollutant
Emission
Rate
(lbs/hr)
Emission
Total
(tons/year)Reference
Benzene 7.76E-04 3.28E-03 1.43E-02
Toluene 2.81E-04 1.19E-03 5.20E-03
Xylenes 1.93E-04 8.15E-04 3.57E-03
Formaldehyde 7.89E-05 3.33E-04 1.46E-03
Acetaldehyde 2.52E-05 1.06E-04 4.66E-04
Acrolein 7.88E-06 3.33E-05 1.46E-04
Naphthalene 1.30E-04 5.49E-04 2.40E-03
Acenaphthylene 9.23E-06 3.90E-05 1.71E-04
Acenaphthene 4.68E-06 1.98E-05 8.65E-05
Fluorene 1.28E-05 5.40E-05 2.37E-04Phenanthrene4.08E-05 1.72E-04 7.54E-04
Anthracene 1.23E-06 5.19E-06 2.27E-05
Fluoranthene 4.03E-06 1.70E-05 7.45E-05
Pyrene 3.71E-06 1.57E-05 6.86E-05
Benz(a)anthracene 6.22E-07 2.63E-06 1.15E-05
Chrysene 1.53E-06 6.46E-06 2.83E-05
Benzo(b)fluoranthene 1.11E-06 4.69E-06 2.05E-05
Benzo(k)fluoranthene 2.18E-07 9.20E-07 4.03E-06
Benzo(a)pyrene 2.57E-07 1.08E-06 4.75E-06
Indeno(1,2,3-cd)pyrene 4.14E-07 1.75E-06 7.65E-06
Dibenz(a,h)anthracene 3.46E-07 1.46E-06 6.40E-06Benzo(g,h,l)perylene 5.56E-07 2.35E-06 1.03E-05
Emission Factor
(lb/MMBtu)
AP-42 Table 3.3-2,
Table 3.4-3, &
Table 3.4-4
(1,3-Butadiene will
not popluate if the
engine size is greater
than 600 hp. AP-42
does not list 1,3-
Butadiene for engines greater than
600 hp.)
Diesel-Fired Engines
Emergency Engines should
equal 100 hours of operation
per year
Manufacturer Data,
AP-42 Table 3.3-1,
& Table 3.4-1
AP-42 Table 3.3-1
& Table 3.4-1
Page 2 of 2 Version 1.1
February 21, 2019
DAQE-989-
01

December 7, 2001

Lawnie Mayhew
Harper Contracting
4655 W 5145 S
Kearns, UT 84118

Dear Mr. Mayhew:

Re: Approval Order: Modification of Approval Order DAQE-160-97 To Make Equipment
Permanent, Salt Lake County, CDS-SM, Non-Attainment, NSPS, Title V
Project Code: N1557-003

The attached document is an Approval Order for the above-referenced project.

Future correspondence on this Approval Order should include the engineer's name as well as the DAQE
number as shown on the upper right-hand corner of this letter. Please direct any technical questions you
may have on this project to Mr. Jon Black. He may be reached at [phone].

Sincerely,

Richard W. Sprott, Executive Secretary
Utah Air Quality Board

RWS:JB:jc

cc: Salt Lake Valley Health Department
Mike Owens, EPA Region VIII

State of Utah DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF AIR QUALITY

Michael O. Leavitt 150 North 1950 West
Governor P.O. Box 144820
Dianne R. Nielson, Ph.D. Salt Lake City, Utah 84114-4820
Executive Director [phone] Voice
Richard W. Sprott [phone] Fax
Director [phone] T.D.D.
Web: www.deq.state.ut.us

STATE OF UTAH

Department of Environmental Quality

Division of Air Quality

APPROVAL ORDER: MODIFICATION OF APPROVAL
ORDER DAQE-160-97 TO MAKE EQUIPMENT PERMANENT

Prepared By: Jon Black, Engineer
E-mail: [e-mail]
[phone]

APPROVAL ORDER NUMBER

DAQE-989-01

Date: December 7, 2001

Harper Contracting
Source Contact
Lawnie Mayhew
[phone]

Richard W. Sprott
Executive Secretary
Utah Air Quality Board

Abstract

Harper Contracting, Inc., (Harper) has submitted a Notice of Intent dated May 4, 2001 for the
Modification of Approval Order (DAQE-160-97) for addition of aggregate processing equipment to Pit
#5. Harper is located at 6200 West 7800 South, Salt Lake City. Salt Lake County is a nonattainment
area of the National Ambient Air Quality Standards (NAAQS) for PM10, SO2, and is a maintenance area
for ozone. New Source Performance Standards (NSPS) 40 CFR 60 Subpart OOO (Standards of
Performance for Nonmetallic Mineral Processing Plants) applies to this source. National Emission
Standards for Hazardous Air Pollutants (NESHAP) and Maximum Available Control Technology
(MACT) regulations do not apply to this source. Title V of the 1990 Clean Air Act applies to this source.
The emissions, in tons per year, will change as follows: PM10 (+) 4.53, NOx (-) 1.19, SO2 (-) 3.41, CO (-)
0.87, VOC (-) 0.92. The changes in emissions will result in the following potential to emit totals, in tons
per year: PM10 14.70, NOx 35.89, SO2 2.32, CO 8.11, VOC 1.09.

The project has been evaluated and found to be consistent with the requirements of the Utah Administrative
Code Rule 307 (UAC R307). A public comment period was held in accordance with UAC R307-401-4
and no comments were received. This air quality Approval Order (AO) authorizes the project with the
following conditions, and failure to comply with any of the conditions may constitute a violation of this
order.

General Conditions:

1. This Approval Order (AO) applies to the following company:

Site Office Corporate Office Location
Harper Contracting Inc. Harper Contracting Inc.
7800 South 6200 West 8201 West 5400 South
Kearns, Utah 84118 Kearns, Utah 84118

Phone Number [phone]
Fax Number [phone]

The equipment listed in this AO shall be operated at the following location:

PLANT LOCATION:

7800 South 6200 West, Kearns, Utah, Salt Lake County

Universal Transverse Mercator (UTM) Coordinate System: UTM Datum NAD27
4,495.7 kilometers Northing, 410.2 kilometers Easting, Zone 12

2. All definitions, terms, abbreviations, and references used in this AO conform to those used
in the Utah Administrative Code (UAC) Rule 307 (R307), and Title 40 of the Code of
Federal Regulations (40 CFR). Unless noted otherwise, references cited in these AO
conditions refer to those rules.

3. The limits set forth in this AO shall not be exceeded without prior approval in accordance
with R307-401.

4. Modifications to the equipment or processes approved by this AO that could affect the
emissions covered by this AO must be approved in accordance with R307-401-1.

5. All records referenced in this AO or in applicable NSPS, which are required to be kept by
the owner/operator, shall be made available to the Executive Secretary or Executive
DAQE-989-01
Page 4

Secretary’s representative upon request, and the records shall include the two-year period
prior to the date of the request. Records shall be kept for the following minimum periods:

A. Emission inventories Five years from the due date of
each emission statement or until the next inventory is due,
whichever is longer.
B. All other records Two years.

6. Harper Contracting, Inc., shall install and operate the aggregate processing equipment and
shall conduct its operations of Pit #5 in accordance with the terms and conditions of this
AO, which was written pursuant to Harper Contracting’s Notice of Intent submitted to
the Division of Air Quality (DAQ) on May 4, 2001 and additional information submitted
to the DAQ on May 24, 2001.

7. This AO shall replace the AO (DAQE-160-97) dated March 3, 1997.

8. The approved installations shall consist of the following equipment:

A. One (1) 250 ton per hour (tph) jaw crusher
B. One (1) 250 tph cone crusher
C. One (1) 250 tph triple deck screen
D. One (1) 250 tph feeder
E. Two (2) diesel generators with 450 kW total capacity.
F. Associated conveyors, stackers, etc. (The transfer points on these processes shall
not exceed 25)
G. Associated loaders, dozers, drills, etc.

9. Harper Contracting, Inc., shall notify the Executive Secretary in writing when the
installation of the equipment listed in Condition #8 has been installed and is operational,
as an initial compliance inspection is required. To insure proper credit when notifying the
Executive Secretary, send your correspondence to the Executive Secretary, Attention:
Compliance Section.

If installation has not been completed within eighteen months from the date of this AO, the
Executive Secretary shall be notified in writing on the status of the installation. At that
time, the Executive Secretary shall require documentation of the continuous installation of
the operation and may revoke the AO in accordance with R307-401-11.

Limitations and Tests Procedures

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

A. All crushers - 15% opacity
B. All screens - 10% opacity
DAQE-989-01
Page 5

C. All conveyor transfer points - 10% opacity
D. All diesel engines - 20% opacity
E. Conveyor drop points - 20% opacity
F. All other points - 20% opacity

Opacity observations of emissions from stationary sources shall be conducted according to
40 CFR 60, Appendix A, Method 9.

For sources that are subject to NSPS, opacity shall be determined by conducting
observations in accordance with 40 CFR 60.11(b) and 40 CFR 60, Appendix A, Method 9.

11. Visible fugitive dust emissions from haul-road traffic and mobile equipment in operational
areas shall not exceed 20% opacity. Visible emissions determinations for traffic sources
shall use procedures similar to Method 9. The normal requirement for observations to be
made at 15 second intervals over a six minute period, however, shall not apply. Six points,
distributed along the length of the haul road or in the operational area, shall be chosen by
the Executive Secretary or the Executive Secretary’s representative. An opacity reading
shall be made at each point when a vehicle passes the selected points. Opacity readings
shall be made ½ vehicle length or greater behind the vehicle and at approximately ½ the
height of the vehicle or greater. The accumulated six readings shall be averaged for the
compliance value.

12. The following production limits shall not be exceeded:

A. 1,500,000 tons of processed aggregate material per rolling 12-month period

B. 3,744 operating hours total for the combination of all crushing plants, including
their associated diesel generators, operating in Pit #5 per rolling 12-month period.

C. 2,050 operating hours total for the screening plant, including the associated diesel
generator, operating in Pit #5 per rolling 12-month period.

To determine compliance with a rolling 12-month total the owner/operator shall calculate
a new 12-month total by the twenty fifth day of each month using data from the previous
12 months. Records of production shall be kept for all periods when the plant is in
operation. Production shall be determined by truck scale records or vendor receipts. The
records of production shall be kept on a daily basis. Hours of operation shall be
determined by supervisor monitoring and maintaining of an operations log.

Roads and Fugitive Dust

13. All unpaved roads and other unpaved operational areas that are used by mobile equipment
DAQE-989-01
Page 6

shall be water sprayed and/or chemically treated to control fugitive dust. The application
of water or chemical treatment shall be used except when the ambient temperature is below
freezing (32O F). Treatment shall be of sufficient frequency and quantity to maintain the
surface material in a damp/moist condition unless it is below freezing. The opacity shall
not exceed 20% during all times the areas are in use. If chemical treatment is to be used,
the plan must be approved by the Executive Secretary. Records of water and/or chemical
treatment shall be kept for all periods when the plant is in operation. The records shall
include the following items:

A. Date of application
B. Number of treatments made
C. Time of day treatments were made
D. Records of temperature if the temperature is below freezing
E. Records of wind speeds when wind speeds exceed 25 mph. This record is not
required if Harper does not claim the wind speed exemption from the opacity limit
on fugitive dust.

Records of treatment shall be made available to the Executive Secretary or Executive
Secretary’s representative upon request and the records shall include the two-year period
prior to the date of the request.

14. The haul road shall not exceed 2 miles in round trip length and the vehicle speed along the
haul road shall not exceed 15 miles per hour. The vehicle speed on the haul road shall be
posted, at a minimum, on site at the beginning of the haul road so that it is clearly visible
from the haul road.

15. Water sprays or chemical dust suppression sprays shall be installed at the following points
to control fugitive emissions:

A. All crushers
B. All screens
C. All conveyor transfer points

The sprays shall operate whenever dry conditions warrant and the ambient temperature is
above freezing, or as determined necessary by the
Executive Secretary to meet the opacity limitations of
Condition #10.

16. The open or disturbed area shall not exceed 10 acres without prior approval from the
Executive Secretary.

17. The storage piles and unpaved operational areas shall be watered to minimize generation
of fugitive dusts as dry conditions warrant or as determined necessary by the Executive
Secretary. The total area of storage piles shall not exceed 10 acres with not more than 5
acres of storage piles being active.

Fuels
DAQE-989-01
Page 7

18. The owner/operator shall use only #2 fuel oil as fuel.

Federal Limitations and Requirements

19. In addition to the requirements of this AO, all applicable provisions of 40 CFR 60, New
Source Performance Standards (NSPS) Subpart A, 40 CFR 60.1 to 60.18 and Subpart OOO
40 CFR 60.670 to 60.676 (Standards of Performance for Nonmetallic Mineral Processing
Plants) apply to this installation.

20. To comply with NSPS notification requirements at 40 CFR 60.676(a)(1) - (3), for each in-
kind replacement of equipment listed in Condition #8 and installation of any other
conveyor, stacker, feeder, or other affected facility not specifically listed in Condition #8,
Harper shall submit a letter to the Utah Division of Environmental Quality at least seven
(7) days in advance of the replacement or installation.

21. To comply with NSPS initial performance testing requirements at 40 CFR 60.8, Harper
shall conduct semiannual opacity observations on all of the sources listed in Condition #8
and shall submit a report to the Executive Secretary on a semiannual basis. The first
semiannual report shall be submitted no later than the last day of June or December of the
corresponding complete half-year after this AO is issued.

Records & Miscellaneous

22. 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
Approval Order 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 Executive Secretary 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, and the records shall be maintained for a period of two years.

23. The owner/operator shall comply with R307-150 Series. Inventories, Testing and
Monitoring.

24. The owner/operator shall comply with R307-107. General Requirements: Unavoidable
Breakdowns.

The Executive Secretary shall be notified in writing if the company is sold or changes its name.

This AO in no way releases the owner or operator from any liability for compliance with all other applicable
federal, state, and local regulations including R307.

A copy of the rules, regulations and/or attachments addressed in this AO may be obtained by contacting the
Division of Air Quality. The Utah Administrative Code R307 rules used by DAQ, the Notice of Intent
(NOI) guide, and other air quality documents and forms may also be obtained on the Internet at the
DAQE-989-01
Page 8

following web site:
http://www.eq.state.ut.us/eqair/aq_home.htm

The annual emission estimations below include point source, fugitive emissions, fugitive dust, road dust
and do not include tail pipe emissions. These emissions are for the purpose of determining the applicability
of Prevention of Significant Deterioration, nonattainment area, maintenance area, and Title V source
requirements of the R307. They are not to be used for determining compliance.

The Controlled Potential To Emit (PTE) emissions for Harper Contracting’s Pit #5 are currently calculated
at the following values:

Pollutant Tons/yr

A. PM10 .............................................................. 14.70
B. SO2 .................................................................. 2.32
C. NOx ................................................................ 35.89
D. CO ................................................................... 8.11
E. VOC ................................................................ 1.09

Approved By:

Richard W. Sprott, Executive Secretary
Utah Air Quality Board

Lucia Mason <[e-mail]>
Compliance Review for Harper Contracting, 11557: Harper Contracting- Pit #5
9 messages
Lucia Mason <[e-mail]>Thu, Nov 21, 2024 at 8:18 AM
To: Chad Gilgen <[e-mail]>
Hi Chad,
Could you review this 10-year review for Harper Contracting?
I talked to the source and although the site is presently closed they want to hang onto their AO because they anticipate operating in the future. Let me know what
you think.
Thanks!
Lucia
10YR, 11557 0001: Harper Contracting- Pit #5 - Salt L…
#3 COMP 10YR RN115570002.rtf
1513K
Chad Gilgen <[e-mail]>Wed, Dec 4, 2024 at 10:10 AM
To: Lucia Mason <[e-mail]>
Hi Lucia,
I have completed the compliance review for this ER. See attached for my comments.
Thanks,
Chad
Chad Gilgen | Manager | Minor Source Compliance
385-306-6500 (cell)
12/11/24, 10:18 AM State of Utah Mail - Compliance Review for Harper Contracting, 11557: Harper Contracting- Pit #5
https://mail.google.com/mail/u/0/?ik=509389cc4c&view=pt&search=all&permthid=thread-a:r-5530849016824520960&simpl=msg-a:r3041463380792968786&simpl=msg-f:1817530642255287091&simpl…1/5
Emails to and from this email address may be considered public records and thus subject to Utah GRAMA requirements.
[Quoted text hidden]
#3 COMP 10YR RN115570002_cg.rtf
1516K
Lucia Mason <[e-mail]>Wed, Dec 4, 2024 at 4:31 PM
To: Chad Gilgen <[e-mail]>
Hi Chad,
Thanks for your comments. I've left an ER comment addressing your complance concerns. Let me know what you think.
Best,
Lucia
10YR, 11557 0001: Harper Contracting- Pit #5 - Salt L…
[Quoted text hidden]
12-4-24 COMP 10YR RN115570002.rtf
1519K
Chad Gilgen <[e-mail]>Thu, Dec 5, 2024 at 12:26 PM
To: Lucia Mason <[e-mail]>
Hi Lucia,
The Reviewer comment in there looks good for the equipment, fees, etc. See attached for a response to your other comment regarding the visible emission
observation.
Thanks,
Chad
12/11/24, 10:18 AM State of Utah Mail - Compliance Review for Harper Contracting, 11557: Harper Contracting- Pit #5
https://mail.google.com/mail/u/0/?ik=509389cc4c&view=pt&search=all&permthid=thread-a:r-5530849016824520960&simpl=msg-a:r3041463380792968786&simpl=msg-f:1817530642255287091&simpl…2/5
Chad Gilgen | Manager | Minor Source Compliance
385-306-6500 (cell)
Emails to and from this email address may be considered public records and thus subject to Utah GRAMA requirements.
[Quoted text hidden]
12-4-24 COMP 10YR RN115570002_cg.rtf
1522K
Lucia Mason <[e-mail]>Thu, Dec 5, 2024 at 2:46 PM
To: Chad Gilgen <[e-mail]>
Hey Chad,
The explanation you gave for rephrasing condition II.B.2.b.1 (the visible emission determination requirement) makes sense and I've updated the language
accordingly. I'm going to leave a comment on the condition when I send it to Alan to double check it's ok to make that change in a 10-year review.
Let me know if you have additional comments or questions.
Thanks for your time!
Lucia
[Quoted text hidden]
12-5-24 COMP 10YR RN115570002.rtf
1517K
Chad Gilgen <[e-mail]>Mon, Dec 9, 2024 at 3:22 PM
To: Lucia Mason <[e-mail]>
Hi Lucia,
Thanks for the update. I think this looks good and have no further questions/comments.
Thanks,
Chad
12/11/24, 10:18 AM State of Utah Mail - Compliance Review for Harper Contracting, 11557: Harper Contracting- Pit #5
https://mail.google.com/mail/u/0/?ik=509389cc4c&view=pt&search=all&permthid=thread-a:r-5530849016824520960&simpl=msg-a:r3041463380792968786&simpl=msg-f:1817530642255287091&simpl…3/5
Chad Gilgen | Manager | Minor Source Compliance
385-306-6500 (cell)
Emails to and from this email address may be considered public records and thus subject to Utah GRAMA requirements.
[Quoted text hidden]
Lucia Mason <[e-mail]>Tue, Dec 10, 2024 at 10:20 AM
To: Chad Gilgen <[e-mail]>
Thank you! When you get a chance could you sign off in the WAL?
[Quoted text hidden]
Chad Gilgen <[e-mail]>Tue, Dec 10, 2024 at 8:26 PM
To: Lucia Mason <[e-mail]>
Hi Lucia,
I have signed off.
Thanks,
Chad
Chad Gilgen | Manager | Minor Source Compliance
385-306-6500 (cell)
Emails to and from this email address may be considered public records and thus subject to Utah GRAMA requirements.
[Quoted text hidden]
Lucia Mason <[e-mail]>Wed, Dec 11, 2024 at 6:40 AM
To: Chad Gilgen <[e-mail]>
Thanks.
12/11/24, 10:18 AM State of Utah Mail - Compliance Review for Harper Contracting, 11557: Harper Contracting- Pit #5
https://mail.google.com/mail/u/0/?ik=509389cc4c&view=pt&search=all&permthid=thread-a:r-5530849016824520960&simpl=msg-a:r3041463380792968786&simpl=msg-f:1817530642255287091&simpl…4/5
[Quoted text hidden]
12/11/24, 10:18 AM State of Utah Mail - Compliance Review for Harper Contracting, 11557: Harper Contracting- Pit #5
https://mail.google.com/mail/u/0/?ik=509389cc4c&view=pt&search=all&permthid=thread-a:r-5530849016824520960&simpl=msg-a:r3041463380792968786&simpl=msg-f:1817530642255287091&simpl…5/5
Lucia Mason <[e-mail]>
DAQ Approval Order Review: 11557: Harper Contracting- Pit #5 - Salt Lake County
4 messages
Lucia Mason <[e-mail]>Thu, Dec 12, 2024 at 11:06 AM
To: Dennis Sortor <[e-mail]>
Hi Dennis,
The DAQ has completed Harper Contracting's updated Approval Order. Before it's issued you have ten days to review the document. Please respond with any
questions or concerns by 12/22. If you approve of the document, please return a signed copy. The updated permit is attached.
Additionally, please confirm that the site's UTM coordinates are correct:
409,850 m Easting
4,496,100 m Northing
Best,
Lucia
DAQE-RN115570002-24.rtf
1517K
Lucia Mason <[e-mail]>Fri, Jan 3, 2025 at 11:24 AM
To: Dennis Sortor <[e-mail]>
Hi Dennis,
I'm reaching out regarding the email I sent on 12/22. Please review the attached AO and either return a signed copy or respond with questions by Tuesday 1/7/25. If
the DAQ does not hear back about the status of this AO by the end of 1/7/24 I will move forward with the permitting process without source approval.
Happy new year,
Lucia
[Quoted text hidden]
1/3/25, 12:37 PM State of Utah Mail - DAQ Approval Order Review: 11557: Harper Contracting- Pit #5 - Salt Lake County
https://mail.google.com/mail/u/0/?ik=509389cc4c&view=pt&search=all&permthid=thread-a:r1027319384719541529&simpl=msg-a:r3640495546720413709&simpl=msg-a:r-2800525803970190728&sim…1/3
DAQE-RN115570002-24.rtf
1517K
Dennis Sortor <[e-mail]>Fri, Jan 3, 2025 at 12:03 PM
To: Lucia Mason <[e-mail]>
Lucia,

I have aached the signed cover page to this email.

Thank you,

   Dennis Sortor
DENNIS SORTOR — C.D.S.
Risk Manager
Office: 801 / 326-1016
Fax: 801 / 326-1019
Mobile: 801 / 381-9923
Email: [e-mail]
Rulon Harper Construction Inc.
8201 West 5400 South
P.O. Box 18549
Kearns, Utah 84118
www.harpercompaniesinc.com

1/3/25, 12:37 PM State of Utah Mail - DAQ Approval Order Review: 11557: Harper Contracting- Pit #5 - Salt Lake County
https://mail.google.com/mail/u/0/?ik=509389cc4c&view=pt&search=all&permthid=thread-a:r1027319384719541529&simpl=msg-a:r3640495546720413709&simpl=msg-a:r-2800525803970190728&sim…2/3

This email and any files transmitted with it are confidential and intended solely for the use of the individual to whom they are addressed. If you have received this email in error please notify the system manager. This
message contains confidential information and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this e-mail. Please notify the sender
immediately by e-mail if you have received this e-mail by mistake and delete this e-mail from your system. If you are not the intended recipient you are notified that disclosing, copying, distributing or taking any action in
reliance on the contents of this information is strictly prohibited..
[Quoted text hidden]
AO-DAQE-AN0115570002 Signed cover page.pdf
34K
Lucia Mason <[e-mail]>Fri, Jan 3, 2025 at 12:24 PM
To: Dennis Sortor <[e-mail]>
Thank you.
[Quoted text hidden]
1/3/25, 12:37 PM State of Utah Mail - DAQ Approval Order Review: 11557: Harper Contracting- Pit #5 - Salt Lake County
https://mail.google.com/mail/u/0/?ik=509389cc4c&view=pt&search=all&permthid=thread-a:r1027319384719541529&simpl=msg-a:r3640495546720413709&simpl=msg-a:r-2800525803970190728&sim…3/3
Lucia Mason <[e-mail]>
Periodic Permit Updates (UT Division of Air Quality), 11557: Harper Contracting- Pit #5 - Salt Lake County
6 messages
Lucia Mason <[e-mail]>Fri, Nov 8, 2024 at 2:22 PM
To: [e-mail]
Hi Dennis,
As per our conversation earlier today, the Division of Air Quality is conducting a 10-year review of the Approval Order associated with Harper Contracting, Inc Pit 5
(site 11557). Please provide the following contact information for the site:
1. Site: phone number, and email (if applicable)
2. Company: physical address, billing address, phone number, fax number (if applicable) and email
3. Environmental contact: name, physical address, mailing address, phone number, fax number (if applicable) and email
4. Billing contact: (if different from environmental contact): name, physical address, phone number, fax number (if applicable) and email
5. Name on Approval Order: (if different from environmental contact): name, physical address, mailing address, phone number, fax number (if applicable)
and email
Please reach out with any questions. You can contact me by email or phone at [phone].
Thanks,
Lucia
Dennis Sortor <[e-mail]>Mon, Nov 11, 2024 at 2:44 PM
To: Lucia Mason <[e-mail]>
Lucia,

1. There is not a site phone number, nor email. You may use mine if needed.
2. Physical Address: 8201 West 5400 South, SLC, Utah 84118
Office: [phone] Fax: [phone]
3. Environmental Contact: Dennis Sortor 8201 West 5400 South SLC, Utah 84118
Office: [phone] Cell: [phone] Email: [e-mail]
4. Billing Contact: Same as Environmental Contact.
5. Name on Approval Order: Lawnie Mayhew (No longer with company)
12/11/24, 10:19 AM State of Utah Mail - Periodic Permit Updates (UT Division of Air Quality), 11557: Harper Contracting- Pit #5 - Salt Lake County
https://mail.google.com/mail/u/0/?ik=509389cc4c&view=pt&search=all&permthid=thread-a:r-1923717747071985695&simpl=msg-a:r-1915455326693597758&simpl=msg-f:1815464067666564738&simpl…1/4
6. Change AO contact: Dennis Sortor 8201 West 5400 South, SLC, Utah 84118 Mailing address: P.O. Box 18549 Salt Lake City, Utah 84118
Phone Number: [phone] Cell: [phone] Email: [e-mail]

If you need any further information/clarification please don’t hesitate to contact me.

Thank you,

   Dennis Sortor
DENNIS SORTOR — C.D.S.
Risk Manager
Office: 801 / 326-1016
Fax: 801 / 326-1019
Mobile: 801 / 381-9923
Email: [e-mail]
Rulon Harper Construction Inc.
8201 West 5400 South
P.O. Box 18549
Kearns, Utah 84118
www.harpercompaniesinc.com

12/11/24, 10:19 AM State of Utah Mail - Periodic Permit Updates (UT Division of Air Quality), 11557: Harper Contracting- Pit #5 - Salt Lake County
https://mail.google.com/mail/u/0/?ik=509389cc4c&view=pt&search=all&permthid=thread-a:r-1923717747071985695&simpl=msg-a:r-1915455326693597758&simpl=msg-f:1815464067666564738&simpl…2/4
You don't often get email from [e-mail]. Learn why this is important
This email and any files transmitted with it are confidential and intended solely for the use of the individual to whom they are addressed. If you have received this email in error please notify the system manager. This
message contains confidential information and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this e-mail. Please notify the sender
immediately by e-mail if you have received this e-mail by mistake and delete this e-mail from your system. If you are not the intended recipient you are notified that disclosing, copying, distributing or taking any action in
reliance on the contents of this information is strictly prohibited..

From: Lucia Mason <[e-mail]>
Sent: Friday, November 8, 2024 2:23 PM
To: Dennis Sortor <[e-mail]>
Subject: Periodic Permit Updates (UT Division of Air Quality), 11557: Harper Contracting- Pit #5 - Salt Lake County

Hi Dennis,

As per our conversation earlier today, the Division of Air Quality is conducting a 10-year review of the Approval Order associated with Harper Contracting, Inc Pit 5
(site 11557). Please provide the following contact information for the site:
1. Site: phone number, and email (if applicable)
2. Company: physical address, billing address, phone number, fax number (if applicable) and email
3. Environmental contact: name, physical address, mailing address, phone number, fax number (if applicable) and email
4. Billing contact: (if different from environmental contact): name, physical address, phone number, fax number (if applicable) and email
5. Name on Approval Order: (if different from environmental contact): name, physical address, mailing address, phone number, fax number (if
applicable) and email
Please reach out with any questions. You can contact me by email or phone at [phone].

Thanks,

Lucia
Lucia Mason <[e-mail]>Tue, Nov 12, 2024 at 7:14 AM
12/11/24, 10:19 AM State of Utah Mail - Periodic Permit Updates (UT Division of Air Quality), 11557: Harper Contracting- Pit #5 - Salt Lake County
https://mail.google.com/mail/u/0/?ik=509389cc4c&view=pt&search=all&permthid=thread-a:r-1923717747071985695&simpl=msg-a:r-1915455326693597758&simpl=msg-f:1815464067666564738&simpl…3/4
To: Dennis Sortor <[e-mail]>
Thank you!
[Quoted text hidden]
Lucia Mason <[e-mail]>Thu, Nov 21, 2024 at 8:19 AM
To: Dennis Sortor <[e-mail]>
Hi Dennis,
Can you confirm the site address and UTM coordinates for Pit #5?
Thanks,
Lucia
[Quoted text hidden]
Dennis Sortor <[e-mail]>Thu, Nov 21, 2024 at 11:36 AM
To: Lucia Mason <[e-mail]>
The address of Pit 5 entrance is:
7400 South 6400 West
West Jordan, Utah
coordinates:
40°37'00.3"N 112°02'37.3"W
[Quoted text hidden]
Lucia Mason <[e-mail]>Thu, Nov 21, 2024 at 12:04 PM
To: Dennis Sortor <[e-mail]>
Thank you.
[Quoted text hidden]
12/11/24, 10:19 AM State of Utah Mail - Periodic Permit Updates (UT Division of Air Quality), 11557: Harper Contracting- Pit #5 - Salt Lake County
https://mail.google.com/mail/u/0/?ik=509389cc4c&view=pt&search=all&permthid=thread-a:r-1923717747071985695&simpl=msg-a:r-1915455326693597758&simpl=msg-f:1815464067666564738&simpl…4/4