Document jgN3ZeK65x94MeBDon9p6rOXk

Region 6 - Enforcement & Compliance Assurance Division INSPECTION REPORT Inspection Date(s): Media Program: Regulatory Program(s) Company Name: Facility Name: Facility Physical Location: (city, state, zip code) Mailing address: (city, state, zip code) County/Parish: Facility Phone Number Facility Contact: 03/16/2021 Water CWA - NPDES, Produced Water Riverstone Energy, LLC Wewoka (Junction Highway 56 and US 270) 35.127785N, -96.484213W Wewoka, Oklahoma 1632 Hollowbrook Edmond, Oklahoma 73012 Seminole County 405-584-9055 Kerry Reed FRS Number: Identification/Permit Number: Media Identifier Number: NAICS: SIC: N/A OKU000896 N/A 211111 1311 Personnel participating in inspection: Kent Sanborn EPA, 6ECDW Kerry Reed Riverstone Energy LLC Jeff Krebs OCC, Ada office Ben Latham START contractor EPA Lead Inspector Owner/Operator District Manager Contract Oil Spill Inspector for EPA EPA Lead Inspector Signature/Date Supervisor Signature/Date Kent W. Sanborn Digitally signed by Kent W. Sanborn DN: cn=Kent W. Sanborn, o, ou=6EN-WR, email=sanborn.kent@epa.gov, c=US Date: 2021.04.15 07:33:46 -05'00' Kent W. Sanborn GUY TIDMORE Digitally signed by GUY TIDMORE DN: c=US, o=U.S. Government, ou=Environmental Protection Agency, cn=GUY TIDMORE, 0.9.2342.19200300.100.1.1=68001003655426 Date: 2021.04.19 14:32:47 -05'00' Guy Tidmore Date 19 APR 2021 Date 6ENFORM-019-R8.2 (02/12/2020) 1 Riverstone Energy LLC/Wewoka Inspection Date: 03/16/2021 Section I - INTRODUCTION Purpose of inspection EPA Region 6 inspector Kent Sanborn arrived at the Riverstone Energy, LLC oil and gas facility at 5:20 pm on 03/16/2021 for an inspection of a reported discharge of brine and oil. The inspection was conducted at the request of Jeff Krebs, District Manager of the Ada District for the Oklahoma Corporation Commission (OCC). I met with the company representative, the OCC, and EPA's START oil spill contract employees at the beginning of the inspection. Prior to the site assessment, I discussed clean-up efforts so far, with the operator and Jeff Krebbs of OCC. The scope of the inspection was conducted under the authority of the Clean Water Act (CWA) to assess a reported spill from the oil and gas facility and assess impacts of nearby water resources under the CWA. Facility Description The facility was a tank battery and associated flow line to a producing well located just a few hundred yards from the battery. The flow line broke on the creek bank and ran directly to the creek. The facility was located just east of Wewoka, Oklahoma. Section II - OBSERVATIONS I had the following observations during the inspection: No measures were taken to control the downstream movement of brine. Several oil booms were in place about 2 miles north in the fast-flowing creek. All the pollution control measures were in between the flow line and the point of entry to the creek. Brine was only seen in small sections of the creek. Oil present as a sheen in multiple places in the creek as well. Were control measures put in place? Yes National Response Center (NRC) notified? Yes Remedial action ongoing? Yes Downstream Observations? Yes Upstream Observations? Yes Spill Ongoing? No Spill reached waterbody? Yes Aquatic Life Kill/Damage? No Vegetation damage? Yes Section III - AREAS OF CONCERN The following areas of concern were identified: The tank battery appeared to have been a source for brine discharge in the past based on surface observations and inadequate secondary containment. Section IV - FOLLOW UP The following follow up actions that are recommended for EPA are: Refer to EPA Region 6 SPCC Program to inspect the tank battery 2 Riverstone Energy LLC/Wewoka Inspection Date: 03/16/2021 Section V - RESOURCES Below are compliance resources for oil and gas facilities: To report spills associated with your facility, call: 1-800-424-8802, for more information: https://www.epa.gov/pesticide-incidents/how-report-spills-and-environmental-violations. For information regarding Spill Prevention, Control, and Countermeasure (SPCC) program: https://www.epa.gov/oil-spills-prevention-and-preparedness-regulations/facilityowneroperators-guide-oil-pollution. For information regarding Underground Injection Control (UIC) (Safe Drinking Water Act): https://www.epa.gov/uic. 3