Document YjaDYxJw0DMbp6DDK0DMbJ1J8

Region 6 - Enforcement & Compliance Assurance Division INSPECTION REPORT Inspection Date(s): Media Program: Regulatory Program(s) 08/04/2025 Water Clean Water Act-National Pollution 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: H.R. Collier Osage Happy Hollow Lease Latitude: 36.571869, Longitude: -96.422065 Pawhuska, OK, 74056 644 North Quawpaw Skiatook, OK, 74070 Osage County, OK 918-381-2263 Denton Collier Owner dmc2263@gmail.com FRS Number: Identification/Permit Number: Media Identifier Number: NAICS: SIC: n/a OKU002220 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: 2025.09.08 10:25:32 -05'00' Digitally signed by MATTHEW ALLEN Matthew Allen Date JEANNE ECKHART Date: 2025.09.09 06:14:37 -05'00' Digitally signed by JEANNE ECKHART Jeanne Eckhart Date 6ENFORM-019-R8.2 (02/12/2020) 1 H.R. Collier / Osage Happy Hollow Lease (CWA) Inspection Date 08/04/2025 Section I - INTRODUCTION PURPOSE OF THE INSPECTION EPA Region 6 Inspector, Matthew Allen, arrived at the H.R. Collier - Osage Happy Hollow Lease (EPA ID No. OKU002220) at 10:20 AM on 08/04/2025 for a follow-up inspection in response to a spill inspection conducted 7/30/2025 (NRC# 1438334). The inspection was conducted by the authority of the Clean Water Act (CWA) to determine compliance with Environmental Protection Agency (EPA) regulations. There was no company representative present during the inspection. There was no other federal, state, or local agency representative present at the time of the inspection. FACILITY DESCRIPTION EPA conducted a follow-up inspection at the H.R. Collier, Osage Happy Hollow lease where a ruptured poly flowline released a company estimated five (5) barrels of oil and one (1) barrel of saltwater to the land surface. Spill impacts migrated to a nearby unnamed tributary of Little Hominy Creek and travelled generally south, ultimately impacting Little Hominy Creek. Section II - OBSERVATIONS I observed the first pool of impacted water along the unnamed tributary of Little Hominy Creek. A TDS field reading of 369.7 mg/L was observed. See photo No. 1 and 2. For additional GPS location information and photo metadata, please see Appendix 1 (photo log) attached to this report. I observed a TDS field reading of 399.4 mg/L at the mouth of the impacted tributary, immediately upstream from the confluence with Little Hominy Creek. At the same location, I observed an oil absorbent boom installed across the impacted tributary. At the time of the inspection, the boom was collecting a small amount of oil. See photo No. 3 and 4. I observed the impacted section of Little Hominy Creek. At the time of the inspection, there was no oil, sheen, oil-stained banks, or oil-stained vegetation/debris present in Little Hominy Creek. See photo No.5. Section III - AREAS OF CONCERN The primary area of concern was the small amount of oil present at the oil absorbent boom near the confluence of the impacted tributary and Little Hominy Creek. Section IV - FOLLOW UP EPA inspector will conduct follow-up calls, field meetings and inspections to ensure the impacted area is returned to "pre-spill" condition. Section V - LIST OF APPENDICES Appendix 1 - Photo Log - 5 photos taken 8/04/2025 2 H R Collier/Osage Happy Hollow Lease (OKU002220) Inspection Date: 8/4/2025 Appendix 1 Photograph Log 5 Photos UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Photograph Log Location: 36.571869, -96.422065 City: Hominy Photo No. 1 County/Parish: Osage State: Oklahoma Photo File Name: R0010732 Orientation: N/A Date of Photo: 8/4/2025 Time of Photo: : 10:25AM Latitude: 36.570285 Longitude: -96.423652 Photographer: Matthew Allen Description: This was a TDS field reading of 369.7 mg/L observed in the first pool of water along the impacted tributary of Little Hominy Creek, downstream from the point of entry (POE) into the tributary. UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Photograph Log Location: 36.571869, -96.422065 City: Hominy Photo No. 2 County/Parish: Osage State: Oklahoma Photo File Name: R0010733 Orientation: S Date of Photo: 8/4/2025 Time of Photo: : 10:27AM Latitude: 36.570285 Longitude: -96.423652 Photographer: Matthew Allen Description: This was the location where the TDS field reading from photo No. 1 was observed. This was the first pool of water along the impacted tributary of Little Hominy Creek. UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Photograph Log Location: 36.571869, -96.422065 City: Hominy Photo No. 3 County/Parish: Osage State: Oklahoma Photo File Name: R0010735 Orientation: N/A Date of Photo: 8/4/2025 Time of Photo: : 10:35AM Latitude: 36.568038 Longitude: -96.423901 Photographer: Matthew Allen Description: This was a TDS field reading of 399.4 mg/L observed at the mouth of the impacted tributary just before the confluence with Little Hominy Creek. UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Photograph Log Location: 36.571869, -96.422065 City: Hominy Photo No. 4 County/Parish: Osage State: Oklahoma Photo File Name: R0010736 Orientation: SW Date of Photo: 8/4/2025 Time of Photo: : 10:36AM Latitude: 36.568038 Longitude: -96.423901 Photographer: Matthew Allen Description: This was the mouth of the unnamed tributary, immediately upstream from the confluence with Little Hominy Creek. This is the same location where the TDS reading from photo No. 3 was observed. At the time of the inspection, there was an oil absorbent boom installed across the tributary and there was a small amount of oil being collected by the boom. UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Photograph Log Location: 36.571869, -96.422065 City: Hominy Photo No. 5 County/Parish: Osage State: Oklahoma Photo File Name: R0010737 Orientation: SE Date of Photo: 8/4/2025 Time of Photo: : 10:38M Latitude: 36.567820 Longitude: -96.423865 Photographer: Matthew Allen Description: This was a photo immediately downstream from the POE into Little Hominy Creek. This is the main channel of Little Hominy Creek. At the time of the inspection, all oil and sheen were removed from the creek. There was no oil staining present on the banks or vegetation.