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Home My WebLink AboutDAQ-2024-0082971 DAQC-PBR153320001-23 Site ID 15332 (B1) MEMORANDUM TO: FILE – OVINTIV USA INC. – S Stollmack 8-19-4-1E THROUGH: Rik Ombach, Minor Source Oil and Gas Compliance Section Manager FROM: Stephen Foulger, Environmental Scientist DATE: September 7, 2023 SUBJECT: OIL AND GAS PERMIT-BY-RULE EVALUATION INSPECTION DATE: August 17, 2023 SOURCE LOCATION: S Stollmack 8-19-4-1E Lat:40.12233 Long: -109.91783 Business Office: 370 17th Street, Suite 1700 Denver, CO 80202 SOURCE TYPE: Tank Battery Duchesne County API: 4304754178 SOURCE CONTACTS: Brad Rowser, Local Contact Phone: 435-646-4870, Email: brad.rowser@ovintiv.com 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, and 40 CFR 60 Subpart OOOO. 2 SOURCE EVALUATION: Site Type: PBR- Uncontrolled Controlled by flare Site powered by Engine The source registered: 7999 Estimated Oil BBL. DOGM current 12 month rolling production is: 2,255. 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-565 Mfg Year - 2014 Horse Power - 40 Combustion - natural gas, Pneumatic, Tank Oil and Gas Industry Registration Requirement The source is registered with the DAQ. [R307-505-3(3)] In Compliance. Source found properly registered at the time of inspection. 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. Source found properly registered at the time of inspection. Storage Vessels Thief hatches are kept closed and latched. [R307-506-4(1)] In Compliance. Thief hatches found closed and latched. 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 production has fallen below 8000 bbls. 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. DAQ inspector reviewed these records and found them to be compliant. 3 Natural Gas Engines Engines subject to R307-510 (does not have an AO, began operations, installed or modified after January 1, 2016) meet the following limits: Maximum Engine hp Emission Standards in (g/hp-hr) NOx CO VOC HC+NOx >25 hp and < 100 hp - 4.85 - 2.83 >100 hp 1.0 2.0 0.7 - [R307-510-4(1)] In Compliance. DAQ inspector reviewed these records and found them to be compliant. Affected engines are certified or have an initial performance test per 40 CFR 60.4244. [R307-510-4(2)] In Compliance. DAQ inspector reviewed these records and found them to be compliant. 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)] Out of Compliance. Stack found horizontal at time of inspection. Company is working on a plan to correct all non-vertical stacks field wide. Engine certifications or initial performance tests required are kept for the life of the engine at the source. [R307-510-5] In Compliance. DAQ inspector reviewed these records and found them to be compliant. 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 observed at the time of inspection. Emission Inventory: An emissions inventory has been submitted within the past three years. [R307-150-9(1)] In Compliance. Source found properly reported to state emissions inventory. NSPS (Part 60) OOOO: Standards of Performance for Crude Oil and Natural Gas Production, Transmission and Distribution [40 CFR 60 Subpart OOOO] In Compliance. 4 PREVIOUS ENFORCEMENT ACTIONS: No enforcement actions within the past five years. COMPLIANCE STATUS & RECOMMENDATIONS: In regards to: S Stollmack 8-19-4-1E : Out of Compliance - The source was found non-compliant at the time of inspection. recommend to increase inspection frequency. The source has been instructed to fix non-vertical exhaust stacks. RECOMMENDATION FOR NEXT INSPECTION: Memo: The source was found non-compliant at the time of inspection. recommend to increase inspection frequency. The source has been instructed to fix non-vertical exhaust stacks.