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Home My WebLink AboutDAQ-2025-0015701 DAQC-PBR035560001-25 Site ID 3556 (B1) MEMORANDUM TO: FILE – OVINTIV USA, INC. – Ute Tribal 14-19-4-2 THROUGH: Rik Ombach, Minor Source Oil and Gas Compliance Section Manager FROM: Fred Goodrich, Environmental Scientist DATE: March 21, 2025 SUBJECT: OIL AND GAS PERMIT-BY-RULE EVALUATION INSPECTION DATE: March 20, 2025 SOURCE LOCATION: Lat:-110.154406947224, Long: 40.1148082827545 Duchesne County Business Office: Ovintiv USA, Inc. 370 17th Street, Suite 1700 Denver, CO 80202 SOURCE TYPE: Tank Battery API: 4301333947 SOURCE CONTACTS: Ryan Zillner, Corporate Environmental Contact Phone: 720-876-3144, Email: ryan.zillner@ovintiv.com 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. SOURCE EVALUATION: Site Type: PBR – Uncontrolled No Flare Controls, Site powered by Engine. The source registered: 7999 Estimated Oil BBL. , - 2 DOGM current 12 month rolling production is: 838 BBL's. 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 - DP-60 Mfg Year - 1961 Horse Power - 58 Combustion - Natural Gas, Pneumatic, Tank General Provisions Visible emissions are within the following opacity limits: VOC Control Devices and Gasoline engines 0%, Diesel engines 20%, Natural Gas Engines and Boilers, Treater burners & Tank burners 10%, Mobile source dust 10%. [R307-201-3] In Compliance. No excessive opacity limits were observed during evaluation. VOC emissions are, at all times, minimized as reasonably practicable by equipment design, maintenance and operation practices. [R307-501-4(1)] Out of Compliance. OGI camera was used during evaluation, fugitive emissions were detected inside treater building. Ovintiv crew fixed leaking fitting during inspection. All natural gas-driven pneumatic controllers are in compliance with 40CFR 60.5390 or 60.5390a as applicable. Tagging and record keeping requirements are not required. [R307-502-4] In Compliance. This source does not use continuous bleed controllers. Tank Truck Loading Truck loading is done by bottom filling or submerged fill pipe [R307-504(1)] In Compliance. The truck loading valves were built and designed for submerged loading. 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. Vessel Vent Components: (valves, unions, pressure relief devices, etc.) are leak-free, in good repair, and working as intended. (Tank covers are leak free and form a continuous seal.). [R307-501-4] In Compliance. Uncontrolled source. PRV device not subject to R307-501-4. 3 Natural Gas Engines 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. Meets this requirement. Pre-2016 source. Initial startup on source was 2008. Associated Gas Flaring Associated gas is routed to a process unit for combustion, a sales pipeline or an operating VOC control device, except in an emergency. An emergency release is unanticipated, temporary, infrequent, unavoidable, =24 hrs. and is not due to operator negligence. Low pressure gas from working loss, breathing loss and oil flashing is not "associated gas". [R307-511-4(1)] In Compliance. Associated gas found properly routed at the time of inspection. Emission Inventory An emissions inventory has been submitted within the past three years. [R307-150-9(1)] In Compliance. The operator submitted for the 2023 emissions inventory. Oil and Gas Industry Registration Requirement The source is registered with the DAQ. [R307-505-3(3)] In Compliance. Source appears to meet this requirement. Engines that were installed, relocated or modified after January 1, 2016 are required to show compliance with Table 1 of R307-510-4 through a performance test evaluation that is reviewed by the DAQ and found to be in compliance. [R307-510-4(1)] In Compliance. Meets this requirement. Pre-2016 source. Initial startup on source was 2008. Applicable Federal Regulations Certified and non-certified engines are regularly maintained according to the Engine manufacturer's Schedule or the Maintenance Plan. [40 CFR 60 Subpart IIII, JJJJ, 63 Subpart ZZZZ] In Compliance. Engine maintenance records reviewed at local field office. 4 PREVIOUS ENFORCEMENT ACTIONS: None in the past 5 years. COMPLIANCE STATUS & RECOMMENDATIONS: In regards to the site, the overall status is: Out of Compliance. The DAQ was joined by Ovintiv personnel during the site inspection. OGI camera was used during evaluation, fugitive emissions were detected inside treater building. Ovintiv crew fixed leaking fitting during inspection. DAQ recommends frequency of inspections to increase. RECOMMENDATION FOR NEXT INSPECTION: NIC-NAR applied on current inspection. If this source is found non-compliant in subsequent future inspections a compliance advisory may be issued. RECOMMENDATIONS FOR NSR: None. ATTACHMENTS: None.