August 28, 2025 TRANSMITTED VIA E-MAIL Andrea Peters, DMRQA Coordinator Equistar Chemicals, LP and LyondellBasell Acetyls, LLC P.O.

REGION 6 DALLAS, TX 75270 December 16, 2025 TRANSMITTED VIA E-MAIL Todd Schmidt, Vice President WRB Refining LLC and ConocoPhillips Company Borger Refinery P.O.

REGION 6 DALLAS, TX 75270 March 17, 2026 TRANSMITTED VIA E-MAIL Kent McVey City of Chandler Chandler, OK 74834 freshwater@chandlerok.com Re: PWS ID Number: OK1020702 Administrative Order, Docket Number: SDWA-06-2026-1214 Dear Mr.

REGION 6 DALLAS, TX 75270 April 10, 2026 TRANSMITTED VIA E-MAIL Bryan Greer Highway 69 Water District P.O.

REGION 6 DALLAS, TX 75270 March 24, 2026 TRANSMITTED VIA E-MAIL Tammy Peery Wildfire Estates Homeowners 525 Wilkenson Dr Norman, OK 73026 tpeery45@gmail.com Re: PWS ID Number: OK2001477 Administrative Order, Docket Number: SDWA-06-2026-1288 Dear Ms.

UNITED STATES ENVIRONMENTAL PROTECTION AGENCY REGIONS 1201 ELM STREET, SUITE 500 DALLAS, TEXAS 75270-2102 TRANSMITTED VIA E-MAIL Ms.

UNITED STATES ENVIRONMENTAL PROTECTION AGENCY REGION6 1201 ELM STREET, SUITE 500 DALLAS, TEXAS 75270-2102 June 28, 2022 TRANSMITTED VIA E-MAIL Mr.

U.S.

Inspector Operator Info Location Latitude Well Inspection Osage DNR / Environmental Protection Agency 1201 Elm Street, Suite 500 Dallas, Texas 75270 Matthew Allen Inspection Date 10/17/2024 Time 08:00 Operator Representative Bandwheel Production Company, LLC Bandwheel Production Inventory ID OS1014000 Company, LLC P.O.

REGION 6 DALLAS, TX 75270 March 26, 2026 TRANSMITTED VIA E-MAIL Rick Goodman Town of Meno P.O.

Inspection Report Mechanical Integrity Test Osage DNR / Environmental Protection Agency 1201 Elm Street, Suite 500 Dallas TX 75270 Inspector Matthew Allen MIT Date 06/26/2024 Operator Representative Performance Energy Resources, LLC Report Sent Operator Inject Interval 1710 - 1745 USDW 397 Annulus Fluid Type Water Concentric Pkr Casing 4.5 Tubing 2.375 Time 09:15 Well Type Disposal Packer Depth 1635 Operator Info Performance Energy Resources, LLC P.O.

Inspector Well Inspection Osage DNR / Environmental Protection Agency 1201 Elm Street, Suite 500 Dallas, Texas 75270 Matthew Allen Inspection Date 08/19/2024 Time 10:30 Operator Representative Shamrock Operating Company, LLC Operator Info Shamrock Operating Company, LLC P.O.

Inspector Well Inspection Osage DNR / Environmental Protection Agency 1201 Elm Street, Suite 500 Dallas, Texas 75270 Matthew Allen Inspection Date 09/18/2024 Time 09:00 Operator Representative Performance Energy Resources, LLC Operator Info Performance Energy Resources, LLC P.O.

Inspection Date(s): Media Program: Regulatory Program(s) 02/11/2025 Drinking Water Safe Drinking Water Act (SDWA) System Owner: System Name: System Physical Location: (city, state, zip code) Mailing address: (city, state, zip code) County/Parish: System Phone Number System Contact: City of Deer Park City of Deer Park PWS City Hall - 710 E San Augustine Deer Park, Texas 77536 PO Box 700 Deer Park, Texas 77536 Harris County 281-478-5273 David VanRiper dvanriper@deerparktx.org I I Public Works Director System Classification PWS ID: Media Identifier Number: NAICS: SIC: Community Water System TX1010007 N/A 221310 4941 Personnel participating in inspection: Janet Cherry ERG (EPA Contractor) Bridget Murphy ERG (EPA Contractor) Mariela Reyna EPA Region 6 Destiny Geppert Texas Commission on Environmental Quality (TCEQ) Anthony Hollister City of Deer Park David Van Riper City of Deer Park Matt Noland City of Deer Park David Ortiz City of Deer Park EPA Lead Inspector Signature/Date - - Janet Cherry Inspector Inspector in Training Inspector Environmental Investigator IT Public Works Director Water Plant Supervisor Water Plant Assistant Supervisor 3/20/2025 Date Supervisor Signature/Date RUBEN ALAYON-GONZALEZ Date: 2025.04.07 15:31:55 -05'00' Digitally signed by RUBEN ALAYON-GONZALEZ Ruben Alayon-Gonzalez Date 1 City of Deer Park (TX1010007) Inspection Date: February 11, 2025 Section I - INTRODUCTION PURPOSE OF INSPECTION On February 11, 2025, the United States Environmental Protection Agency (EPA) and EPA contract inspectors from Eastern Research Group, Inc.

Region 6 - Enforcement & Compliance Assurance Division INSPECTION REPORT Inspection Date(s): Media Program: Regulatory Program(s) 03/27/2025 Water CWA Company Name: Facility Name: Facility Physical Location: (city, state, zip code) Mailing address: (city, state, zip code) County/Parish: Facility Phone Number Facility Contact: Village of Taos Ski Valley Taos Ski Valley WWTP 101 Ocean Boulevard Village of Taos Ski Valley, New Mexico 87525 Post Office Box 100 Taos Ski Valley, New Mexico 87525 Taos 575-776-8220 Kevin Cisneros WWTP Operator kevin@vtsv.org FRS Number: Identification/Permit Number: Media Identifier Number: NAICS: SIC: 110002047197 NM0022101 NA 221320 4952 Personnel participating in inspection: Kevin Cisneros Village of Taos Ski Valley Damean Crenen Village of Taos Ski Valley Josiah Griego Village of Taos Ski Valley David Esparza EPA-R6/ECDWM WWTP Operator WWTP Operator WWTP Operator Environmental Engineer EPA Lead Inspector Signature/Date DAVID ESPARZA David Esparza Digitally signed by DAVID ESPARZA Date: 2025.04.29 14:42:35 -06'00' Date Supervisor Signature/Date ROBERTO BERNIER Date: 2025.04.30 16:30:52 -05'00' Digitally signed by ROBERTO BERNIER Roberto Bernier Date 6ENFORM-020-R8.2 (02/12/2020) 1 Village of Taos Ski Valley/Taos Ski Valley WWTP Permit No.