DAQ-2024-007295

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DAQC-PBR145740001-24
Site ID 14574 (B1)
MEMORANDUM

TO: FILE – UINTA WAX OPERATING, LLC – ULT 12-26-3-1E

THROUGH: Rik Ombach, Minor Source Oil and Gas Compliance Section Manager

FROM: Chris Jensen, Environmental Scientist

DATE: March 14, 2024

SUBJECT: OIL AND GAS PERMIT-BY-RULE EVALUATION

INSPECTION DATE: March 13, 2024

SOURCE LOCATION: ULT 12-26-3-1E
Lat:40.191389 Long: -109.857707

Business Office:
6000 Western Place, Suite 1000
Fort Worth, TX 76107-4664

SOURCE TYPE: Tank Battery
Rural Uintah County
API: 4304751891

SOURCE CONTACTS: Aimee Cole, Local Contact
Phone: [phone], Email: [e-mail]

Kaylene Bridwell, Corporate Environmental Contact
Phone: [phone], Email: [e-mail]

OPERATING STATUS: Operating

PROCESS DESCRIPTION: Oil and gas products are brought to the surface. These products
go through a separator where the oil and any water products are
sent to storage tanks and the gas is used to power equipment on
site (pump jack engine, tank heater, separator, flare, combustor,
etc.) Any remaining gas is sent to a pipeline that feeds a local
gas plant. The oil and process water in the storage tanks is
loaded into tanker trucks and hauled off site for processing and
disposal.

APPLICABLE REGULATIONS: Utah Administrative Code (UAC) R307-500 Series for the Oil
and Gas Industry, and UAC R307-201: Emission Standards:
General Emission Standards; and UAC R307-150: Emission
Inventories, and NSPS (60) JJJJ.

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SOURCE EVALUATION: Site Type: PBR- Uncontrolled
No Flare Controls
Site powered by Engine

DOGM current 12 month rolling production is: 1,389 BBLs.
Utah Statute R307-506 requires a source with throughput
greater than 8,000 BBLs to have controls.

REGISTERED EQUIPMENT:

Pneumatic Controllers

Continuous bleed natural gas-driven pneumatic controllers are in compliance with 40 CFR 60.5390 or
60.5390a as applicable. Exemptions to tagging and record keeping requirements apply to controllers
existing before 12/1/2015. [R307-502-4]

In Compliance. This source does not use continuous bleed natural gas-driven pneumatic
controllers.

Oil and Gas Industry Registration Requirement

The source is registered with the DAQ. [R307-505-3(3)]

In Compliance.

Registration has been updated within 30 days of a company name change, removal or addition of
control devices, or termination of operations. [R307-505-3(3)]

In Compliance.

Storage Vessels

Thief hatches are kept closed and latched. [R307-506-4(1)]

In Compliance. All hatches were found closed at the start of the evaluation.

Upon modification, the well site was re-evaluated against the thresholds of R307-506-4(2).
[R307-506-4(6)]

In Compliance. The DAQ did not identify any modifications or unauthorized equipment.

Records for each of the following are kept for three years:

Storage vessel vent system inspections (openings, thief hatches, pressure relief devices,
bypasses, etc.), if required
Monthly crude oil throughput
Emission calculations, actuals and sampling data when used to justify an exemption to storage
vessel rules
Emergency storage vessel usage (dates used, emptied, and volumes), if not controlled per
R307-506-4(2). [R307-506-5]

In Compliance. Monthly crude output was provided.
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Natural Gas Engines

Affected engines are certified or have an initial performance test per 40 CFR 60.4244.
[R307-510-4(2)]

In Compliance. The DAQ received an initial stack test found on E-Z Search.

Affected engine exhaust vents are vertical and unrestricted.
Stacks are 8' or greater if the site horsepower rating is 151 to 305
Stacks are 10' or greater if the site horse power rating is 306 or greater. [R307-510-4(3)]

In Compliance.

Visible Emissions

Visible emissions, except for unavoidable irregularities that do not exceed three minutes, are within the
following opacity limits:
Installations constructed on or before 4/25/1971 40%
Installations constructed after 4/25/1971 20%
Gasoline engines 0%
Diesel engines manufactured after 1/1/1973 20%
Diesel engines manufactured before 1/1/1973 40%
Note: Required VOC control devices shall have no visible emissions per R307-508-3. [R307-201-3]

In Compliance. No visible emissions were detected.

Emission Inventory:

An emissions inventory has been submitted within the past three years. [R307-150-9(1)]

In Compliance. The Operator submitted for the 2020 emissions inventory.

Applicable Federal Regulations:

NSPS (Part 60) JJJJ: Standards of Performance for Stationary Spark Ignition Internal Combustion
Engines [40 CFR 60 Subpart JJJJ]

Not Observed. The DAQ did not request engine maintenance records for this location this time.

PREVIOUS ENFORCEMENT
ACTIONS: No enforcement actions within the past five years.

COMPLIANCE STATUS &
RECOMMENDATIONS: In Compliance - The source was inspected by AVO, and with
an OGI camera, was found to be well-kept with no visible or
fugitive emissions.

RECOMMENDATION FOR
NEXT INSPECTION: The DAQ has no Recommendations for the next inspector other
than what are customary. The DAQ recommends the inspection
frequency of this source be reduced.