Document wgvDrYGVnd6O1BjEoe9eE79qo

Region 6 - Enforcement & Compliance Assurance Division INSPECTION REPORT Inspection Date(s): Media Program: Regulatory Program(s) 02/27/2025 Water Clean Water Act - National Pollutant Discharge Elimination System (Brine) Company Name: Facility Name: Facility Physical Location: (city, state, zip code) Mailing address: (city, state, zip code) County/Parish: Facility Phone Number Facility Contact: 4D Oil & Gas, LLC Nellie Noble Lease Tank Battery 36.697949, -96.133679 Okesa, OK, 74003 532 Kihekah Ave. Pawhuska, OK, 74056 Osage County 580-541-5802 Dustin Hirrlinger Butch.mccomas@gmail.com 620-330-0213 FRS Number: Identification/Permit Number: Media Identifier Number: NAICS: SIC: n/a OKU002212 n/a 211111 1311 Personnel participating in inspection: Matthew Allen EPA Region 6 ECDW Inspector EPA Lead Inspector Signature/Date Supervisor Signature/Date MATTHEW ALLEN Date: 2025.03.26 11:29:26 -05'00' Digitally signed by MATTHEW ALLEN Matthew Allen Date JEANNE ECKHART Date: 2025.04.02 09:43:55 -05'00' Digitally signed by JEANNE ECKHART Jeanne Eckhart Date 6ENFORM-019-R8.2 (02/12/2020) 1 4D Oil & Gas / Nellie Noble Lease (OKU002212) Inspection Date 02/27/2025 Section I - INTRODUCTION PURPOSE OF THE INSPECTION EPA Region 6 inspector Matthew Allen arrived at the 4D Oil & Gas, LLC/Nellie Noble Lease tank battery (OKU002212) at 2:50 PM on 2/27/2025 for an unannounced inspection. This was an EPA inspection in response to a citizen complaint which was received by EPA Region 6. The inspection was conducted under the authority of the Clean Water Act (CWA) to ensure compliance with Environmental Protection Agency (EPA) regulations. No other local, state, tribal or federal partners were present at the time of the inspection. FACILITY DESCRIPTION EPA conducted an inspection at the 4D Oil & Gas, LLC/Nellie Noble Lease tank battery (OKU002212). The facility consisted of the 4D Oil & Gas, LLC/Nellie Noble Lease tank battery, and the connected wells and flowlines. Section II - OBSERVATIONS I observed the Nellie Noble Lease tank battery facility signage. A recent spill inside the Nellie Noble tank battery was the source of the citizen complain. See photo No. 1, of Appendix 1 (photo log). For additional GPS location information and photo metadata, see the attached photo log. I observed the Nellie Noble tank battery along the east side of the facility, this facility overview can be seen in photo No. 2. I observed the west side of the facility. At the time of the inspection, there was significant oil staining on the soil, gravel and vegetation inside the facilities' secondary containment. This facility overview and oil staining can be seen in photo No. 3. I observed the oil-stained sump/pit area at the northwest corner of the facility. See photo No. 4. I observed an oil-stained area immediately north of the northernmost tank at the facility. This area appeared to be caused by leaking piping or valves. See photo No. 5. I observed the facilities' loading area, which was located outside of the secondary containment. There was oil-stained soil/gravel present at the time of the inspection. See photo No. 6. Section III - AREAS OF CONCERN The primary area of concern at the time of the inspection was the significant oil staining located both inside and outside of the facility. Section IV - FOLLOW UP Inspector referred the facility to the EPA-SPCC/FRP program for further evaluation. 2 4D Oil & Gas / Nellie Noble Lease (OKU002212) Inspection Date 02/27/2025 Section V - LIST OF APPENDICES Appendix 1 - Photo Log - 6 photos taken 2/27/2025. 3 4D Oil & Gas, LLC/Nellie Noble Lease (OKU002212) Inspection Date: 02/27/2025 Appendix 1 Photograph Log 6 Photos UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Photograph Log Location: 36.697949, -96.133679 City: Okesa Photo No. 1 County/Parish: Osage State: Oklahoma Photo File Name: IMG_0086 Orientation: W Date of Photo: 02/27/2025 Time of Photo: 2:54 PM Latitude: 36.697949 Longitude: -96.133679 Photographer: Matthew Allen Description: This was the facility sign for the 4D Oil & Gas, LLC, Nellie Noble lease tank battery at the time of the inspection. UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Photograph Log Location: 36.697949, -96.133679 City: Okesa Photo No. 2 County/Parish: Osage State: Oklahoma Photo File Name: IMG_0087 Orientation: NW Date of Photo: 02/27/2025 Time of Photo: 2:54 PM Latitude: 36.697949 Longitude: -96.133679 Photographer: Matthew Allen Description: This was an overview of the facility facing northwest. UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Photograph Log Location: 36.697949, -96.133679 City: Okesa Photo No. 3 County/Parish: Osage State: Oklahoma Photo File Name: IMG_0088 Orientation: N Date of Photo: 02/27/2025 Time of Photo: 2:55 PM Latitude: 36.697949 Longitude: -96.133679 Photographer: Matthew Allen Description: This was a view down the west side of the facility showing the oil-stained floor of the facility. UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Photograph Log Location: 36.697949, -96.133679 City: Okesa Photo No. 4 County/Parish: Osage State: Oklahoma Photo File Name: IMG_0089 Orientation: SW Date of Photo: 02/27/2025 Time of Photo: 2:56 PM Latitude: 36.697949 Longitude: -96.133679 Photographer: Matthew Allen Description: This was a view of the sump/pit area with oil-stained soil/gravel present. UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Photograph Log Location: 36.697949, -96.133679 City: Okesa Photo No. 5 County/Parish: Osage State: Oklahoma Photo File Name: IMG_0090 Orientation: W Date of Photo: 02/27/2025 Time of Photo: 2:56 PM Latitude: 36.697949 Longitude: -96.133679 Photographer: Matthew Allen Description: This was an oil-stained area inside the facility. UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Photograph Log Location: 36.697949, -96.133679 City: Okesa Photo No. 6 County/Parish: Osage State: Oklahoma Photo File Name: IMG_0091 Orientation: S Date of Photo: 02/27/2025 Time of Photo: 2:57 PM Latitude: 36.697949 Longitude: -96.133679 Photographer: Matthew Allen Description: This was an oil-stained area, outside the secondary containment, at the loading area.