The inspectors presented their credentials to Michael Hurff - Public Works Director, Dean Baker - Lead Wastewater Operator, and Stephen Peters - Wastewater Operator, and had an opening conference where I outlined the intended format and scope of the inspection.

Environmental Protection Agency (EPA): Timothy Evans, Life Scientist, ECAD (Lead Inspector) 3.0 INSPECTION PROCEDURES On May 23, 2022, Chris Norris and I arrived at the facility at approximately 9:00 a.m.

N/A Personnel participating in inspection: David Riley US EPA Region 6 Gloria Odusote US EPA Headquarters Derek Morrison ExxonMobil Baytown Jeff Kovacs ExxonMobil Baytown Barbara Kellum ExxonMobil Baytown George Rizzo ExxonMobil Baytown Arend Schaap ExxonMobil Baytown Toby Cox ExxonMobil Baytown - BTEC Esmeralda Lida ExxonMobil Baytown - BTEC Inspector Inspector Baytown Waste Advisor Regional Affairs & Compliance Manager Environmental Section Supervisor Senior Counsel Process Lead, Flexicoker Operation Team Research Labs Process First Line Supervisor Lead for Advanced Recycling Lab EPA Lead Inspector Signature/Date r~Dc01() /\ Johrl David Riley V 9/27/24 Date Supervisor Signature/Date H STUCKEY DigitallysignedbyHSTUCKEY Date: 2024.09.27 10:55:57 -05'00' H.

Attendees Title/Organization Lead Inspector/ Contractor/ERG Inspector/Enforcement Officer/EPA Region 6 Inspector/Enforcement Officer/EPA Region 6 RCRA Inspector/ Contractor/ERG NME/Operations Name Vince Damiano John Penland Erin Young-Dahl Janosh Wolters Bubba Nini Email Vince.Damiano@erg.com Opening Closing Conf.

EPA Contract Inspector (Lead Inspector) U.S.

Attendees Title/Organization Lead Inspector/ Contractor/ERG RCRA Inspector/ Contractor/ERG Inspector/Enforcement Officer/EPA Region 6 Inspector/Enforcement Officer/EPA Region 6 Name Vince Damiano Phone Email (703) 633-1732 Vince.Damiano@erg.com Opening Conf.

Spent lead-acid batteries generated during vehicle service and repair are managed according to requirements of 40 CFR Part 266 Subpart G.

Will lead to miscommunication and misunderstanding regarding the risk of PFAS chemistries.

Main Street, Suite 100, Oklahoma City, OK 73102 Oklahoma, OK Oklahoma 405-297-3731 Jeff Bolden Water Quality Superintendent, TINKER AFBC/O OKC UTILITIES DEPT Jeff.bolden@okc.gov System Classification PWS ID: Media Identifier Number: NAICS: SIC: Community Water System (CWS) OK2005508 N/A N/A N/A Primary personnel participating in inspection: Stephen Clark ERG (EPA Contractor) Kevin Sarmiento ERG (EPA Contractor) Eddie Anguiano Oklahoma Department of Environmental Quality (ODEQ) Andrew Shaw ODEQ Jeff Kindschuh Tinker AFB Trey Perdue Jeromy Brush Oklahoma City Inframark (Oklahoma City Contractor) Inspector Inspector Contracting Officer Representative Water/Wastewater Tinker AFB Site Manager Contract Operator EPA Lead Inspector Signature/Date Stephen Clark Digitally signed by Stephen Clark Date: 2025.01.30 14:03:15-07'00' Stephen Clark, ERG (EPA Contract Inspector) Supervisor Signature/Date RUBEN ALAYON- ~i~~N~i~i21I~~BEN GONZALEZ Date: 2025.01 .3114:12:01 -06'00' Ruben Alayon-Gonzalez, EPA Region 6, Enforcement and Compliance Assurance Division, Water Resources Section 6ENFORM-019-R8.2 (02/12/2020) 1 Tinker AFB, PWS ID: OK2005508 Inspection Date(s): 12/10/2024 and 12/11/2024 Section I - INTRODUCTION PURPOSE OF THE INSPECTION On December 10-12, 2024, EPA contract inspectors from ERG (hereinafter the Inspection Team) conducted an announced Safe Drinking Water Act (SDWA) compliance inspection of the Tinker Air Force Base (AFB) Public Water System (the System), PWS ID No.

Attendees Title/Organization Lead Inspector/ Contractor/ERG RCRA Inspector/ Contractor/ERG Inspector/Enforcement Officer/EPA Region 6 Inspector/Enforcement Officer/EPA Region 6 Name Vince Damiano Phone Email (703) 633-1732 Vince.Damiano@erg.com Opening Conf.

EPA ID# GAD097395693 largest commercial hardware supplier in the U.S. and one of the leading manufacturers of commercial service hardware in the world.

Failure to attempt to make arrangements with local hospitals. 10 CSR 25-5.262(1) incorporating 40 CFR 262.34(a)(4) referencing 40 CFR 265.37(a)(4). 8-17 Failure to create and maintain a personnel training plan including information as described in 40 CFR 265.15 18-25 Failure to maintain a contingency plan on site, which includes information as described in 40 CFR 265.52 and 40 CFR 265.53 Attendees Title/Organization Name Phone Lead Inspector/EPA Donald Melton (913) 551- REGION 7 5021 Email Melton.Donald@epa.gov Opening Conf.

EPA Inspection Report - Page 1 of 40 Region 6 - Enforcement & Compliance Assurance Division INSPECTION REPORT Inspection Date(s): Media Program: Regulatory Program(s) 09/23-24/2021 Air SIP, NESHAP, NSPS Company Name: Facility Name: Facility Physical Location: (city, state, zip code) Mailing address: (city, state, zip code) County/Parish: Facility Phone Number Facility Contact: City of Dallas McCommas Bluff Landfill 5100 Youngblood Rd Dallas, TX 75241 3112 Canton Street, Suite 200 Dallas, TX 75226 Dallas County 214-670-0977 John Jones John.Jones@dallascityhall.com Environmental Coordinator III FRS Number: Identification/Permit Number: Media Identifier Number: NAICS: SIC: 110005097714 TCEQ RN100752146 / Standard Permit Air New Source Registration 74705 48-113-00859 562212 4953 Personnel participating in inspection: Ben Rosenthal EPA/Region 6 ECDAT James Haynes EPA/Region 6 ECDAT John Jones City of Dallas Tad Bates City of Dallas Richard Akin City of Dallas Robert Fadden City of Dallas Debra Sanders City of Dallas David Mezzacappa SCS Engineers Jason Lewalla SCS Engineers Bobby Llanas SCS Engineers Physical Scientist Physical Scientist Environmental Coordinator III Manager Senior Engineer Interim Assistant Director Office Assistant II Vice President Project Director Project Coordinator EPA Lead Inspector Signature/Date BENJAMIN ROSENTHAL Digitally signed by BENJAMIN ROSENTHAL DN: c=US, o=U.S.

Environmental Protection Agency (EPA), Region 7, Enforcement Compliance and Assurance Division (ECAD), Water Branch: Zachary Leibowitz, Physical Scientist 913-551-7553 (Lead Inspector) Adam Hendrickson, Physical Scientist 913-551-7253 (Credentialed Inspector) Page 1 of 13 3.

Boardman West Plant EPA Inspector Signature/Date Supervisor Signature/Date Name Jon Klemesrud Martha Cruse Title Lead Inspector Inspector Present in Opening Conf.