Attendees Title/Organization Lead Inspector/ Contractor/ERG RCRA Inspector/ Contractor/ERG Inspector/Enforcement Officer/EPA Region 6 Inspector/Enforcement Officer/EPA Region 6 Name Phone Email Opening Closing Conf.

Electronic Supplementary Material (ESI) for Environmental Science: Processes & Impacts.

Environmental Compliance Manager riffel.bruce@cleanharbors.com FRS Number: Identification/Permit Number: Media Identifier Number: NAICS: SIC: NA Texas Solid Waste Registration #50089 TXR000085319 562998 - All Other Miscellaneous Waste Management Services 7699 - Repair Shops and Related Services Personnel participating in inspection: Dedriel Gardner EPA R6/ECD-SR Bruce Riffel Clean Harbors Deer Park Michael Robbins Jason Jones Randolph Jackson Kim Bravenec Steven Banister Daniel Tauriello (exit only) CHESI Tank Wash CHESI Tank Wash Clean Harbors Deer Park Clean Harbors Deer Park, Transportation Group Clean Harbors Deer Park Clean Harbors Deer Park Lead Inspector, Environmental Engineer Sr.

Pretreatment Audit Report City of Bismarck ND-0023434 Bismarck, North Dakota June 28, 2022 to June 30, 2022 Prepared by: Al Garcia, Pretreatment Coordinator U.S.

Pretreatment Audit Report Jordan Basin Improvement District Pretreatment Audit Report UT0025852 Bluffdale, Utah August 19, 2025 to August 20, 2025 Prepared by: Al Garcia, Pretreatment Coordinator U.S.

Legal Counsel, ESG & EHS Environmental Director Vice President, EHS EPA Lead Inspector Signature/Date KIM NGUYEN Digitally signed by KIM NGUYEN Date: 2026.01.13 18:08:58 -06'00' Kim Nguyen Date Supervisor Signature/Date KAYLA BUCHANAN Date: 2026.01.14 10:27:32 -06'00' Digitally signed by KAYLA BUCHANAN Kayla Buchanan Date 6ENFORM-019-R9 (02/27/2025) 1 Lion Oil Co. dba Delek U.S. - El Dorado, AR Refinery Consent Decree Civil No. 1:03-cv-01028-HFB Inspection Dates 9/22/2025 to 9/25/2025 Section I - INTRODUCTION PURPOSE OF THE INSPECTION EPA Region 6 inspectors Prince Nfodzo, Nicolas Studebaker, and I (Kim Nguyen) arrived at Lion Oil Company, owned and operated by Delek US ("Lion Oil/Delek"), El Dorado Refinery at 12:30 pm on September 22, 2025, for an announced inspection.

UNITED STATES ENVIRONMENTAL PROTECTION AGENCY REGION III FOUR PENN CENTER - 1600 JOHN F.

U.S.

Index of Enclosed Documents RE: Washington Works CWA Compliance The enclosed combined PDF contains the following documents.

From: Sent: To: Subject: Attachments: Lombardi, Kyle Wed, 14 May 2025 14:04:15 +0000 Matesic, Hannah (OST); Priebe, Jack (OST) AIP Grant Question - Redding Airport Redding AIP Grant Application.pdf k This email originated from outside of the Department of Transportation (DOT).

U.S.

U.S.

Pretreatment Audit Report City and County of Butte-Silver Bow MT-0022012 Butte, Montana August 14, 2023 to August 16, 2023 Prepared by: Al Garcia, Pretreatment Coordinator U.S.

Pretreatment Audit Report City of Greeley CO-0040258 Greeley, Colorado January 29, 2024 to January 31, 2024 Prepared by: Al Garcia, Pretreatment Coordinator U.S.

Pretreatment Audit Report City of Greeley CO-0040258 Greeley, Colorado January 29, 2024 to January 31, 2024 Prepared by: Al Garcia, Pretreatment Coordinator U.S.