Document x5B7nj7BVObnQ5My2XGVp2Nq0

Region 6 Compliance Assurance and Enforcement Division INSPECTION REPORT Inspection Date(s): Media: Regulatory Program(s) 11/29/2017 Water Brine - CWA Company Name: Facility Name: Facility Physical Location: (city, state, zip code) Mailing address: (city, state, zip code) County/Parish: Facility Contact: Warren American Oil Company, LLC Chapman Lease 36.846708 N, -96.5006 W (SE Sec. 1, T 27N, R 7E) Pawhuska, Oklahoma 74056 6585 South Yale Ave., Suite 800 Tulsa, Oklahoma 74147 Osage County John Burroughs (918) 481-7900 FRS Number: Identification/Permit Number: Media Number: NAICS: SIC: N/A OKU000862 N/A 21111 1311 Personnel participating in inspection: Kent W. Sanborn 6EN-WR Environmental Engineer (918) 557 - 1615 EPA Lead Inspector Signature/Date Supervisor Signature/Date Sanborn, Kent Digitally signed by Sanborn, Kent DN: cn=Sanborn, Kent, email=Sanborn.Kent@epa.gov Date: 2018.01.23 12:35:10 -06'00' Kent W. Sanborn Digitally signed by JERRY SAUNDERS JERRY SAUNDERS DN: c=US, o=U.S. Government, ou=USEPA, ou=Staff, cn=JERRY SAUNDERS, dnQualifier=0000011249 Date: 2018.01.25 12:05:16 -06'00' Jerry Saunders Date Date 6ENFORM-019-R7 (2/15/2017) 1 Section I - INTRODUCTION PURPOSE OF THE INSPECTION Warren American Oil Company, LLC / Chapman Lease Inspection Date: 11/15/2017 EPA Region 6 inspector K.W. Sanborn visited the Warren American Oil Company, LLC oil and gas facility located at the latitude 36.846708 N and longitude -96.5006 W near Pawhuska, Oklahoma on 11/15/2017 for an unannounced inspection. There were no representatives present for Warren American Oil Company, LLC conducted by authority of the Clean Water Act to determine compliance with the Environmental Protection Agency (EPA) regulations. FACILITY DESCRIPTION The facility was known as the Chapman tank battery and has EPA identification number: OKU000862. Section II - OBSERVATIONS I conducted this inspection with a calibrated YSI 30 Pro Conductivity Meter. I measured Total Dissolved Solids (TDS) in the tributary where the discharge had occurred previously. I observed that the highest reading of TDS was 12,000 mg/L in a dug hole in the tributary next to flow lines. I took additional measurements in the tributary, downstream from the point of entry from the previous spill and TDS readings were approximately 1,500 mg/L. Section III - AREAS OF CONCERN Ongoing remedial operations continue to address the identify elevated levels of TDS in the tributary. Section IV - FOLLOW UP Conduct a follow up inspection as needed Section V - LIST OF APPENDICES N/A 2