DAQ-2024-011281

Small Source Registration

DAQE-EN161750002-24

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Brandon McDowell
Wildcat Midstream, LP
1308 Lake Street
Fort Worth, TX 76102
[e-mail]

Dear Mr. McDowell:

Re: Request for Evaluation of Compliance with Rule R307-401-9, UAC: Small Source Exemption
Project Fee Code: N161750002

On September 19, 2024, the Division of Air Quality (DAQ) received your request for a small source
exemption for the Wildcat Midstream, LP Martin Yard Transloading Facility. The source is located at 340 West Hardscrabble Creek Road in Helper, Carbon County. DAQ has determined the small source
exemption applies to the source, as long as the equipment and associated processes operate as specified in
the registration request.

The small source exemption does not exempt a source from complying with other applicable federal,
state, and local regulations and the current Utah Administrative Code. Based on the emissions that you
submitted to DAQ with your registration request, the Wildcat Midstream, LP Martin Yard Transloading
Facility is not required to obtain an approval order under R307-401. If you change your operation such
that there is an increase in emissions, we recommend that you notify us, as an approval order may be
required.

As authorized by the Utah Legislature, the fee for issuing this small source exemption is a one-time filing
fee in addition to the actual time spent by the review engineer and all other staff on the project. Payment
should be sent to DAQ upon receipt of the invoice.
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

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DAQE-EN161750002-24
Page 2
Thank you for registering your source with the DAQ. If you have any additional questions, please contact
Christine Bodell at [phone] or [e-mail].

Sincerely,

Bryce C. Bird
Director

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Alan D. Humpherys, Manager
New Source Review Section

BCB:ADH:CB:jg

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Martin Yard
Potential to Emit
Road Emissions
Input Value Units Reference
Daily amount hauled 36,595 bbl/day [1]
Amount per truck 270 bbl average load
Round trip distance 0.3 VMT/truck [1]
Average vehicle weight 32.25 Short tons [1]
Annual operating hours 8,760 Hours/year [1]
Maximum trips daily 136 Trips calculated
Maximum trips annually 49,471 Trips calculated
Maximum VMT daily 40.7 Vehicle miles traveled calculated
Maximum VMT annually 14,841 Vehicle miles traveled calculated
[1] Wildcat Plan of Operations
Emission Factor Variables PM10 PM2.5 Reference
k 1.5 0.15 [1]
s (%) 4.8 4.8 [2]
W (tons) 32.25 32.25 [3]
P 90 90 [4]
a 0.9 0.9 [1]
b 0.45 0.45 [1]
Control Factor 0.85 0.85 [5]
Units Reference
Daily 1.915 lb/VMT calculated
Annual 1.443 lb/VMT calculated
Daily 0.191 lb/VMT calculated
Annual 0.144 lb/VMT calculated
[1] k, a, b are constants AP-42 Chapter 13.2.2 Table 13.2.2-2
[3] W is the mean vehicle weight in tons
[4] P is the number of days with 0.01 inch of precipitation, AP-42,Chapter 13.2 Figure 13.2.2-1
[6] Daily emission factor (lb/VMT) E = k * (s/12)^a * (W/3)^b
[7] Annual emission factor (lb/VMT) E = k * (s/12)^a * (W/3)^b * ((365 - P)/365)
PM Emissions PM10 PM2.5 Units Reference
77.85 7.78 lb/day calculated
10.70 1.07 ton/year calculated
11.68 1.17 lb/day calculated
1.61 0.16 ton/year calculatedControlled Emissions
PM10 Emission Factors
PM2.5 Emission Factors
Uncontrolled Emissions
PM Emissions
[2] s is surface material silt content equal to 4.8 per UDAQ memo - Emission Factors for Paved and Unpaved Haul Roads 1/12/2015
[5] CF is the control factor equal to 85% for chemical suppressant (MgCl) and watering per UDAQ memo - Emission Factors for
Paved and Unpaved Haul Roads 1/12/2015
Page 1 of 1 9/25/2024
Wildcat Midstream, LP
Martin Yard
340 W. Hardscrabble Creek Rd.
Helper, UT 84526
Small Source Exemption
Emissions Summary
Source Emission Type VOC
Industrial Wax (crude) loading Point Source 2.17Diesel Loading Point Source 2.63Methanol Loading Point Source 0.02FugitivesFugitive Source 0.06
Total All 4.88
HAP Industrial Wax (crude) Loading Diesel Loading Methanol Loading Fugitives Total
Benzene 2.32E-02 1.05E-04 0.00E+00 6.97E-04 2.40E-02
Ethylbenzene 2.17E-03 1.39E-03 0.00E+00 9.93E-05 3.66E-03
Toluene 3.04E-02 2.13E-03 0.00E+00 9.62E-04 3.35E-02
Hexane 4.37E-01 7.88E-04 0.00E+00 1.31E-02 4.51E-01
2,2,4-Trimethylpentane 0.00E+00 1.84E-04 0.00E+00 4.54E-06 1.88E-04
Xylenes 0.00E+00 6.33E-03 0.00E+00 1.56E-04 6.48E-03
Cumene 0.00E+00 1.47E-03 0.00E+00 3.64E-05 1.51E-03
1,2,4-trimethylbenzene 0.00E+00 9.16E-03 0.00E+00 2.27E-04 9.39E-03
Naphthalene 0.00E+00 7.48E-03 0.00E+00 1.85E-04 7.67E-03
Biphenyl 0.00E+00 3.07E-03 0.00E+00 7.60E-05 3.15E-03
Methanol 0.00E+00 0.00E+00 2.16E-02 0.00E+00 2.16E-02
Total HAP 0.56
VOC Emissions (ton/year)
HAP Emissions (ton/year)
Page 1 of 5
Wildcat Midstream, LP
Martin Yard
340 W. Hardscrabble Creek Rd.
Helper, UT 84526
Small Source Exemption
#2 Diesel Fuel Loading
VOC Emissions
Value Units Reference
Throughput 375,000,000 gal/year Projected VolumeVOC Emission factor 0.014 lb/1000 gal AP-42 Table 5.2-5Uncontrolled VOC emissions 5,250 lb/year calculated
Uncontrolled VOC emissions 2.63 ton/year calculated
HAP Emissions
HAP Weight Percent Emissions (ton/yr)Reference
Benzene 0.004%1.05E-04 [5]
Ethylbenzene 0.053%1.39E-03 [5]
Toluene 0.081%2.13E-03 [5]
Hexane 0.030%7.88E-04 [5]2,2,4-Trimethylpentane 0.007%1.84E-04 [5]
Xylenes 0.241%6.33E-03 [5]
Cumene 0.056%1.47E-03 [5]
1,2,4-trimethylbenzene 0.349%9.16E-03 [5]
Naphthalene 0.285%7.48E-03 [5]Biphenyl 0.117%3.07E-03 [5]
Total HAP 3.21E-02
[5] Emissions Estimation Protocol for Petroleum Refiners Table A-1, April 2015
Page 2 of 5
Wildcat Midstream, LP
Martin Yard
340 W. Hardscrabble Creek Rd.
Helper, UT 84526
Small Source Exemption
Industrial Wax (crude) Loading
Loading Loss Factor Calculation [1] [2]
Variable Value Units Reference
Saturation Factor, S 1 unitless [3]
Calculated True Vapor Pressure (150F), P 1.12 psia [4]
Molecular wt. of Vapor, M 79.28 lb/lb-mole [5]
Temperature, T 610 R [6]
[1] Uncontrolled emissions, using AP-42 Chapter 5.2
[2] Loading Loss Factor Equation (lb/1000 gal) = 12.46*(S*P*M)/T
[4] Average from product testing
[5] Based on representative chemical data
[6] Plan of Operations
VOC Emissions
Value Units Reference
Throughput 183,960,000 gal/year Projected Volume (12,000 bbl/day)
VOC Emission factor 1.814 lb/1000 gal calculated [2]Generated VOC emissions 333,652 lb/year calculatedGenerated VOC emissions 166.83 ton/year calculated
Control Efficiency 98.7%%AP-42 Chapter 5.2 Vapor Balance for NSPS-level annual leak testControlled VOC emissions (point source)2.17 ton/year Calculated
Point Source HAP Emissions
HAP Wt.% in vapors Emissions (ton/yr)Reference
Benzene 1.07%2.32E-02 Antoine's equation. A = 6.9, B = 1211, C = 220.79
Ethylbenzene 0.10%2.17E-03 Antoine's equation. A = 6.95, B = 1419.3, C = 212.61
Toluene 1.40%3.04E-02 Antoine's equation. A = 7.01, B = 1377.6, C = 222.64Hexane20.16%4.37E-01 Antoine's equation. A = 6.87, B = 1171.5, C = 224.37
Total HAP 0.493
[3] AP-42 Chapter 5.2 Table 1.
Page 3 of 5
Wildcat Midstream, LP
Martin Yard
340 W. Hardscrabble Creek Rd.
Helper, UT 84526
Small Source Exemption
Methanol Loading Emissions
Loading Loss Factor Calculation
Variable Value Units Reference
Saturation Factor, S 1 unitless AP-42 Chapter 5.2 Table 1.
True Vapor Pressure of Product (60F), P 1.43 psia NOAA Cameo Chemical Datasheet
Molecular wt. of Vapor, M 32.04 lb/lb-mole
Temperature, T 515.67 R Daily average temperature, Price, UT
VOC Emissions
Value Units Reference
Throughput 3,000,000 gal/year Projected Volume
VOC Emission factor 1.106 lb/1000 gal Loading Loss Factor Equation (lb/1000 gal) = 12.46*(S*P*M)/TGenerated VOC emissions 3,317 lb/year calculatedGenerated VOC emissions 1.66 ton/year calculated
Control Efficiency 98.7%%AP-42 Chapter 5.2 - Vapor BalanceControlled VOC emissions (point source)0.022 ton/year Calculated
Point Source HAP Emissions
HAP Wt.% in vapors Emissions (ton/yr)
Methanol 100.00%0.022
Total HAP 0.022
Page 4 of 5
Wildcat Midstream, LP
Martin Yard
340 W. Hardscrabble Creek Rd.
Helper, UT 84526
Small Source Exemption
Fugitive Emissions
Component Count and VOC Emissions
VOC Emissions VOC Emissions
(kg/hr/source)(lb/hr/source)(lb/yr)(ton/yr)
Gas valves 0 1.30E-05 2.87E-05 - -
Light liquid valves 58 4.30E-05 9.48E-05 48 0.02
Gas pumps 0 6.50E-05 1.43E-04 - -
Light liquid pumps 5 5.40E-04 1.19E-03 52 0.03
Compressors and others 1 1.30E-04 2.87E-04 3 0.00
Gas flanges/connections 0 4.20E-05 9.26E-05 - -
Liquid flanges/connections 175 8.00E-06 1.76E-05 27 0.01
Total 239 130 0.06
[1] Emission factors from EPA 453/R-95-017, Table 2-3
HAP Emissions Industrial Wax (crude)
HAP Wt.% in
vapors
Emissions
(lb/yr)
Emissions
(ton/yr)Reference
Benzene 1.07% 1.39 6.95E-04 [2]
Ethylbenzene 0.10% 0.13 6.49E-05 [2]
Toluene 1.40% 1.82 9.09E-04 [2]
Hexane 20.20% 26.23 1.31E-02 [2]
Total HAP 29.57 1.48E-02
HAP Emissions Diesel
HAP Weight
Percent
Emissions
(lb/yr)
Emissions
(ton/yr)Reference
Benzene 0.004% 0.01 2.60E-06 [3]
Ethylbenzene 0.053% 0.07 3.44E-05 [3]
Toluene 0.081% 0.11 5.26E-05 [3]
Hexane 0.030% 0.04 1.95E-05 [3]
2,2,4-Trimethylpentane 0.007% 0.01 4.54E-06 [3]
Xylenes 0.241% 0.31 1.56E-04 [3]
Cumene 0.056% 0.07 3.64E-05 [3]
1,2,4-trimethylbenzene 0.349% 0.45 2.27E-04 [3]
Naphthalene 0.285% 0.37 1.85E-04 [3]
Biphenyl 0.117% 0.15 7.60E-05 [3]
Total HAP 1.59 1.09E-04
[3] Emissions Estimation Protocol for Petroleum Refiners Table A-1, April 2015
[2] Vapor weight percent from BTECS tank calculation results based on representative chemical data
Components Count Hours per
Year
Emission Factor [1]
8,760
Page 5 of 5
Response Summary:
To be eligible businesses shall not do any of the follow:

1) Emit more than 5 tons per year of each of the following pollutants: Sulfur Dioxide (SO2), Carbon Monoxide (CO),
Nitrogen Oxides (NOx), Particulate Matter (PM10), Ozone (O3), or Volatile Organic Compounds (VOCs).
2) Emit more than 500 lbs/yr of any single Hazardous Air Pollutant (HAP), and emit more than 2000 lbs/yr of any
combination of HAPs
3) Emit more than 500 lbs/yr of any combination of air contaminants not listed in 1 or 2

A copy of this registration notice and worksheets are required on site to verify permit exemption status.

Please be aware a the Small Source Exemption ONLY exempts the site from the air permitting requirements of R307-
401-5 thru R307-401-8 of the Utah Administrative Code, all other air quality regulations still apply.

Q4.
Please fill out the following contact information:
Site Contact Site Owner
Name Brandon McDowell Helper Diesel Loading Facility Wildcat Midstream, LP
Mailing
Address 1308 Lake Street 340 W. Hardscrabble Creek
Road 1308 Lake Street
Mailing
Address
2
NA NA NA
City Fort Worth Helper Fort Worth
State TX Utah TX
Zip
Code 76102 84526 76102
Phone [phone] 7208461270 7208461270
Fax NA NA NA
Email [e-mail] [e-mail] [e-mail]

Q5. County the Site is located in:
Carbon County

Q6. Briefly describe the process including the end products, raw materials, and process equipment used.
Addition of 50,000 bbl/year transloading of methanol from railcar to tank truck. Existing operations include transloading
of industrial wax (crude) and diesel. There are no changes requested to existing operations.
Addition of methanol operations increases calculated annual emissions of VOC from 4.86 tpy to 4.88 tpy.

Q7. List emission units
Loading, Fugitives.

Q8. List any pollution control equipment
Emissions controlled through vapor balancing.

Q9. Please include Annual Emission Rates calculation spreadsheet.
[Click here]

Q11. Contact Information: (person filling out form - signature will be required)
Name Brandon McDowell
Title Regulatory Compliance Manager
Phone [phone]
Date 9/19/2024

Q10. By signing below, I hereby certify that the information and data submitted in this notice fully describes
this site and ONLY this site. The information provide is true, accurate, and complete to the best of my
knowledge. I understand that I am responsible for determining whether the site remain eligible for this
exemption before making operational or process changes in the future, and agree to notify the Division of
Air Quality when this site is not longer eligible for this exemption. (Signature of Owner/Manager)
[Click here]

Embedded Data:
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