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Home My WebLink AboutDAQ-2025-0001611 DAQC-PBR038870001-24 Site ID 3887 (B1) MEMORANDUM TO: FILE – OVINTIV USA, INC. – Hancock 6-21-4-1 THROUGH: Rik Ombach, Minor Source Oil and Gas Compliance Section Manager FROM: Fred Goodrich, Environmental Scientist DATE: December 31, 2024 SUBJECT: OIL AND GAS PERMIT-BY-RULE EVALUATION INSPECTION DATE: November 21, 2024 SOURCE LOCATION: Lat:40.12341, Long: -110.00512 Duchesne County Business Office: Ovintiv USA, Inc. 370 17th Street, Suite 1700 Denver, CO 80202 SOURCE TYPE: Tank Battery API: 4301350206 SOURCE CONTACTS: Ryan Zillner, Corporate Environmental Contact Phone: 720-876-3144, Email: ryan.zillner@ovintv.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. Federal Subpart: 40 CFR 60 Subpart OOOO. SOURCE EVALUATION: Site Type: PBR – Uncontrolled Controlled by flare, Site powered by Engine. The source registered: 1268 Estimated Oil BBL. , - 2 DOGM current 12 month rolling production is: 1,005 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 - E-42 Mfg Year - 1975 Horse Power - 40 Combustion - Natural Gas, Pneumatic, Tank Visible Emissions 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 visible emissions were detected during evaluation. VOC emissions are, at all times, minimized as reasonably practicable by equipment design, maintenance and operation practices. [R307-501-4(1)] In Compliance. Uncontrolled source meets this requirement. Pneumatic Controllers 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. 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. 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. 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. 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. Pre-2016 source meets this requirement. 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. 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. Engines subject to R307-510 shall be certified or have an initial performance test per CFR 60.4244. [R307-510-4(2)] In Compliance. Pre-2016 source meets this requirement. Initial source startup was May of 2010. Engine certifications or initial performance tests required are kept for the life of the engine at the source. [R307-510-5] In Compliance. 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. Pre-2016 source meets this requirement. Records for each of the following are kept for three years: Monthly storage vessel vent system inspections (openings, thief hatches, pressure relief devices, bypasses, etc.), if controlled. 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. [R307-506-5] In Compliance. Records observed at local field office and appear to be orderly and complete. 4 NSPS (Part 60) OOOO: Standards of Performance for Crude Oil and Natural Gas Production, Transmission and Distribution [40 CFR 60 Subpart OOOO] In Compliance. The operator appears to meet this requirement. PREVIOUS ENFORCEMENT ACTIONS: None in the past 5 years. COMPLIANCE STATUS & RECOMMENDATIONS: In regards to the site, the overall status is: In Compliance. OGI camera was used during evaluation, no fugitive emissions were detected. The operator was helpful and cordial during inspection. RECOMMENDATION FOR NEXT INSPECTION: The DAQ has no recommendations for the next inspector other than what are customary. RECOMMENDATIONS FOR NSR: None. ATTACHMENTS: None.