Document 1gq5po4ke75DYZw8ry2ZYMBEj

XTO Energy, Inc. - Various Well Pads Located on North Dakota State Land Partial Compliance Evaluation (PCE) On-Site Clean Air Act (CAA) Inspections Inspection Date(s): October 22, 2024 Inspection Report Date: December 27, 2024 US EPA Region 8 Representatives: Katelyn Bergl, Clean Air Act Inspector Youn Joo Kim, Clean Air Act Inspector Taylor Waanders, Clean Air Act Inspector North Dakota Division of Russel Martin, Inspector Air Quality Representatives: Myles Erb, Inspector Company Representatives: None Inspection Report Prepared Katelyn Bergl By: Youn Joo Kim Inspection Report Reviewed By: Applicable Rules: Scott Patefield, Manager, Enforcement and Compliance Assurance Division, Air and Toxics Enforcement Branch SCOTT PATEFIELD Date: 2024.12.27 15:48:24 -07'00' Digitally signed by SCOTT PATEFIELD North Dakota Administrative Code, Title 33.1, Article 15, as incorporated into North Dakota's EPA-approved State Implementation Plan at 40 C.F.R. Part 52, Subpart JJ - North Dakota (ND SIP), including the following chapters: Chapter 7, Control of Organic Compound Emissions (ND SIP Chapter 7); Chapter 12, Standards of Performance for New Stationary Sources (ND SIP Chapter 12); and Chapter 20, Control of Emissions from Oil and Gas Well Production Facilities (ND SIP Chapter 20) 40 C.F.R. Part 60, Subpart OOOO - Standards of Performance for Crude Oil and Natural Gas Facilities for Which Construction, Modification, or Reconstruction Commenced After August 23, 2011, and on or Before September 18, 2015 40 C.F.R Part 60, Subpart OOOOa - Standards of Performance for Crude Oil and Natural Gas Facilities for which Construction, Modification or Reconstruction Commenced After September 18, 2015 (NSPS OOOOa) 40 C.F.R Part 60, Subpart OOOOb - Standards of Performance for Crude Oil and Natural Gas Facilities for Which Construction, Modification or Reconstruction Commenced After December 6, 2022 (NSPS OOOOb) Compliance Assistance None Enforcement History XTO Energy, Inc. (XTO) was issued a Notice of Violation (NOV) on August 28, 2024, under Docket Number CAA-08-2024-0015. Areas of Concern None General Inspection Information Unannounced well pad inspections were conducted jointly by U.S. EPA and North Dakota Department of Environmental Quality - Division of Air Quality inspectors (Inspectors) on October 22, 2024, at multiple XTO facilities located in North Dakota. XTO is a whollyowned subsidiary of Exxon Mobil that operates under the XTO Energy name. The Inspectors evaluated each well site listed in Table 1 using audio, visual, and olfactory (AVO) inspection methods including the use of an optical gas imaging (OGI) camera and EPA Reference Method 22. At each facility, Inspectors scanned the crude and/or water storage tanks, closed vent system and flares onsite for any detectable emissions. Specifically, Inspectors scanned storage tank covers and closed vent systems for hydrocarbon emissions to determine compliance with the Clean Air Act, including the North Dakota SIP and NSPS regulations. Each well pad inspection followed the approach below: 1. Record the entry sign of the well pad when available. Survey the entire well pad with OGI camera. 2. Record the number and type of site process equipment such as well heads, tanks, and emission control devices. 3. Record AVO indications of emissions from the storage tanks, closed vent system to the control devices and control devices. 4. Using the OGI camera, survey each process in infrared modes (auto, manual, and/or high-sensitivity modes). Record any uncontrolled emissions with the OGI camera and describe the frequency and magnitude of emissions in the field notebook. Page 2 of 4 5. Observe control devices (enclosed combustor or utility flare) for visible emissions. If there is visible emissions present, conduct Method 22 and record the observations. 6. Using another OGI camera, if available, confirm any observations of uncontrolled emissions with another Inspector. 7. If there are operators present onsite, share any Areas of Concern. Table 1 lists general inspection and well pad details for each inspected well pad. The well pad information located in Table 1 is from the North Dakota Industrial Commission (NDIC) well index located online at https://www.dmr.nd.gov/oilgas/. Table 1: Inspection and Facility Details of Facilities Inspected Date 10/22/24 Arrival Time 9:25 Departure Time 9:33 Well Pad Name Loomer 41X-3C 10/22/24 9:34 9:40 Rita 44X-34BXC API Number(s) 3305304933 3305304932 3305304931 3305304930 3305306841 3305306754 3305306305 3305306304 3305306303 3305306302 3305306753 Latitude 47.847506 47.848366 Longitude -103.32861 -103.33167 Tables 2 and 3 summarize inspection observations. Table 2 summarizes storage tank observations. Table 3 includes details of control devices and related observations. See Appendix A for a log of images and videos taken during the inspections. Page 3 of 4 Table 2: Inspection Details: Storage Tank Observations Number of Storage AVO (Audio, visual, Well Pad Name Tanks olfactory) Observations Loomer 41X-3C 20 - Rita 44X-34BXC 30 - Emissions Description - - Media File Name - - Table 3: Inspection Details: Control Devices and AVO/OGI Observations Number Visible of Pilot Active Control Control Device Flame Flaring Well Name Device(s) Type(s) (Y/N) (Y/N) Loomer 41X-3C High-Low Y N 2 2-Prong HP Y N Rita 44X-34BXC Air Assisted Steffes Y N 3 Air Assisted Steffes Y N 2-Prong HP Y N Method 22 Observations None None None None None Emission Description - - - - - Page 4 of 4 APPENDIX A: Photograph and Video Log Media File entrysign-20241022-142650.jpg entrysign-20241022-143550.jpg Description Entry Sign Entry Sign Well Pad Name Loomer 41X-3C Rita 44X-34BXC Appendix A Page 1 of 1