DAQ-2024-007369

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DAQC-PBR031440001-23
Site ID 3144 (B1)
MEMORANDUM

TO: FILE – OVINTIV USA, INC. – Sandpass 5-20R-4-1

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

FROM: Stephen Foulger, Environmental Scientist

DATE: December 11, 2023

SUBJECT: OIL AND GAS PERMIT-BY-RULE EVALUATION

INSPECTION DATE: November 2, 2023

SOURCE LOCATION: Sandpass 5-20R-4-1
Lat: 40.12237 Long: -110.02669

Business Office:
370 17th Street, Suite 1700
Denver, CO 80202

SOURCE TYPE: Tank Battery
Duchesne County
API: 4301331010

SOURCE CONTACTS: Brandon Lithgoe, Local Contact
Phone: [phone], Email: [e-mail]
Ryan Zillner, Local 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.

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SOURCE EVALUATION: Site Type: PBR-Uncontrolled
No Flare Controls
Site powered by Engine
The source registered: 3,199 Estimated Oil BBL.

DOGM current 12 month rolling production is: 970
Utah Statute R307-506 requires a source with throughput
greater than 8,000 BBLs to have controls.

REGISTERED EQUIPMENT: Engine - Engine - Natural Gas 2-Stroke Lean Burn Make - Ajax
Model - E-42 Mfg Year - 1963 Horse Power - 40 Combustion -
Natural Gas, Pneumatic, Tank

8 Oil and Gas Industry General Provisions

The source adheres to general requirements for prevention of emissions and use of good air
pollution control practices. [R307-501]

Out of Compliance: Emissions were found coming from the tank top gathering line and
produced water tank thief hatch.

15 Oil and Gas Industry Registration Requirement

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

In Compliance. This source was found properly registered with the DAQ at the time of
inspection.

17 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.

18 Storage Vessels

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

In Compliance. Thief hatches were observed closed and latched at the time of inspection.

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

In Compliance. Combustor has been removed after source dropped to approved production
levels.
38

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46 Visible Emissions

47 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 observed at the time of inspection.
48
55 Emission Inventory:

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

In Compliance. This source was found properly reported in the 2020 emissions inventory.

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

COMPLIANCE STATUS &
RECOMMENDATIONS: In regards to Sandpass 5-20R-4-1:

Out of Compliance - The source was found non-compliant at the
time of inspection with emissions coming from the produced
water tank thief hatch and tank top gathering line. Recommend
to increase inspection frequency. If this source is found out of
compliance during the next inspection a compliance advisory
should be issued.

RECOMMENDATION FOR
NEXT INSPECTION: The source was found non-compliant at the time of inspection
with emissions coming from the produced water tank thief hatch
and tank top gathering line. Recommend to increase inspection
frequency. If this source is found out of compliance during the
next inspection a compliance advisory should be issued.

ATTACHMENTS: