U.S.

NPDES Inspection Report - Wastewater Treatment Facility National Database Information Inspection Date: August 19, 2024 Inspection Type: CEI - Wastewater Treatment Facility Entry/Exit Time: Opening Conference: 9:15 a.m. - 1:30 p.m.

UNITED STATES ENVIRONMENTAL PROTECTION AGENCY REGION 8 1595 Wynkoop Street Denver, CO 80202-1129 www.epa.gov/region8 Ref: 8WD-SDB January 27, 2024 SENT VIA EMAIL Mike Dellos, Water Operator South Big Horn County JPB P.O.

Ref: 8WD-SDB February 19, 2024 SENT VIA EMAIL Robert F.

Ref: 8WD-SDB February 19, 2024 SENT VIA EMAIL Renee Jones, Owner The Station P.O.

Ref: 8WD-SDR September 16, 2024 SENT VIA EMAIL Philip Wong, Civil Engineer Bridger-Teton National Forest - Blackrock Work Center 340 North Cache Street Jackson, Wyoming 83001 philip.wong@usda.gov Re: Notice of Noncompliance Revised Total Coliform Rule Failure to Monitor (Routine Sample) PWS ID# WY5680211 NC Dear Philip Wong: The purpose of this letter is to inform you that Bridger-Teton National Forest - Blackrock Work Center has failed to conduct the required monitoring for total coliform bacteria for not submitting at least 1 sample per month.

UNITED STATES ENVIRONMENTAL PROTECTION AGENCY REGION 8 1595 Wynkoop Street Denver, CO 80202-1129 Phone 800-227-8917 www.epa.gov/region8 January 20, 2023 Ref: 8WD-SDB SENT VIA EMAIL Mr.

EPA Inspection Report - Page 1 of 5 Region 6 - Enforcement & Compliance Assurance Division INSPECTION REPORT Inspection Date(s): Media Program: Regulatory Program(s) 02/13/2024 Air Title V, NESHAP, NSPS, SIP Company Name: Facility Name: Facility Physical Location: (city, state, zip code) Mailing address: (city, state, zip code) County/Parish: Facility Phone Number Facility Contact: Chevron Phillips Chemical Company Port Arthur Plant 2001 S Gulfway Dr Port Arthur, TX 77640 2001 S Gulfway Dr Port Arthur, TX 77640 Jefferson County 1-409-985-0726 Kevin Mercy Environmental Supervisor mercyk@cpchem.com FRS Number: Identification/Permit Number: Media Identifier Number: NAICS: SIC: 110020148008 Title V Federal Operating Permit O-1235 AFS 48-245-00125; 48-245-00162 325110-Petrochemical Manufacturing; 325199-All Other Basic Organic Chemical Manufacturing 2869-Industrial Organic Chemicals, Not Elsewhere Classified Personnel participating in inspection: Nicholas Bobbs EPA OECA AED Daniel Heins EPA OECA AED Philip Myers EPA NEIC Conor Goulding EPA NEIC Kevin Mercy Chevron Phillips Chemical Company Connie Weber Chevron Phillips Chemical Company Davis Turner Chevron Phillips Chemical Company Jim Dykes Chevron Phillips Chemical Company James Alan Johnson Chevron Phillips Chemical Company Hayden Guidry Chevron Phillips Chemical Company Gary Parsley Chevron Phillips Chemical Company Brian Kubsch Chevron Phillips Chemical Company Lead Air Inspector Air Inspector Environmental Engineer Physical Scientist Environmental Supervisor EHSS Manager Technical Manager Maintenance Manager Aromatics Operator Environmental Specialist Plant Manager Ops Manager EPA Lead Inspector Signature/Date NICHOLAS BOBBS Date: 2024.04.12 08:59:47 -04'00' Digitally signed by NICHOLAS BOBBS Nicholas Bobbs Date Supervisor Signature/Date GREGORY FRIED Date: 2024.04.12 09:09:55 -04'00' Digitally signed by GREGORY FRIED Gregory Fried Date 6ENFORM-019-R8.2 (02/12/2020) 1 EPA Inspection Report - Page 2 of 5 Section I - INTRODUCTION Chevron Phillips Chemical / Port Arthur Plant Inspection Date 02/13/2024 PURPOSE OF THE INSPECTION EPA inspectors Nicholas Bobbs and Daniel Heins (EPA Office of Enforcement & Compliance Assurance Air Enforcement Division), accompanied by Philip Myers and Conor Goulding (EPA National Enforcement Investigations center, "NEIC") arrived at the Chevron Phillips Chemical Company - Port Arthur Plant (the "Facility") at 15:00 on 2/13/2024 for an unannounced inspection.

EPA Inspection Report - Page 1 of 16 Region 6 - Enforcement & Compliance Assurance Division INSPECTION REPORT Inspection Date(s): Media Program: Regulatory Program(s) 02/14/2024 Air Title V, NESHAP Company Name: Facility Name: Facility Physical Location: (city, state, zip code) Mailing address: (city, state, zip code) County/Parish: Facility Phone Number Facility Contact: Indorama Ventures Oxides LLC Port Neches Facility 2701 Spur 136 Port Neches, TX 77651 2701 Spur 136 Port Neches, TX 77651 Jefferson County 409-722-8381 Rachel Lavergne Environmental Manager rachel.lavergne@us.indorama.net 409-724-4468 FRS Number: Identification/Permit Number: Media Identifier Number: NAICS: SIC: 110000599567 Title V Federal Operating Permits: O1230, O2286, O2287, O2288, and O3056 AFS 48-245-00006 325110-Petrochemical Manufacturing; 325199-All Other Basic Organic Chemical Manufacturing 2869-Industrial Organic Chemicals, Not Elsewhere Classified Personnel participating in inspection: Nicholas Bobbs EPA OECA AED Daniel Heins EPA OECA AED Philip Myers EPA NEIC Conor Goulding EPA NEIC Kenneth McPherson EPA Region 6 ECDAT Kimberly Hoyt Indorama Micah Mosley Indorama Jack Tindel Indorama David Avanzato Indorama James Kalathra Indorama Allie Sarles Indorama Rachel Lavergne Indorama Troy Allen Indorama Kelly Hargraves Indorama Ronnie Mudd Indorama Lead Air Inspector Air Inspector Environmental Engineer Physical Scientist Air Inspector Site Director Manufacturing Executive Manager Sr.

UNITED STATESUNITED STATES ENVIRONMENTAL PROTECTION AGENCY * *REGION 1 ENVIRONMENTAL AGENCY5 POST OFFICEB OSSTQOUN,A RMAE ,0 21S0U9-I3T9E12 100 PROTECTION Date:Dated as shown on electronic signature(s) Subj:Inspection Report Clean Water Act Hutchinson Sealing Systems From:John (Jack) Melcher, Enforcement Officer JOHN MELCHERDigitally sDiatge:n e20d23 .b11y.0 1J 1O1:H3N6: 36M E-0L4'C0H0 E' R Thru:Damian Bednarz, Enforcement Officer Digitally signed by DAMIAN DAMIAN BEDNARZ BEDNARZ Date: 2023.11.01 11:41:26 -04'00 ' To:File Appendices:Appendix A-Schematic Process Diagram Appendix B-Photographs Appendix C-Email with Production Levels I.

EPAClean Water Act Section 404: Site Visit / Case Development United States Environmental Protection AgencyFor inspections authorized pursuant to Clean Water Act sections 308 and 404 (33 U.S.C. 1318 and 1344) This report includes only factual information gained by documentation, onsite observations, and / or onsite interviews.

UNITED STATES ENVIRONMENTAL PROTECTION AGENCY REGION 8 RESOURCE CONSERVATION AND RECOVERY ACT BASIC INFORMATION Facility Name: Tear - A - Part Auto RecyclingFacility Location: 652 South Redwood Road, Salt Lake City, Utah 84104 RCRA ID: UTR000010819Phone: (801) 886-2345 Notification Status: VSQGFacility Contact: (b) (6), (b) (7) (C) (b) (6), (b) (7) (C) | Date of Inspection: June 5, 2024Start Time: 9:40 a.m.

Message From: Sent: To: Killian, Cole [Killian.Cole@epa.gov] 2/13/2025 11:17:15 PM Loving, Kathryn [Loving.Kathryn@epa.gov]; Coogan, Daniel [Coogan.Daniel@epa.gov] As a note: Detail Ex. 5 Deliberative Process (DP) NGGS Change Request Earthjustice/Sierra Club 2025-EPA-05146 ED_018033_00000743-00001 SC_EVERSPLIT0030771

Message From: Sent: To: Attachments: Killian, Cole [Killian.Cole@epa.gov] 2/17/2025 5:36:01 PM Loving,Kathryn [Loving.Kathryn@epa.gov] 0-gcctx-d1-13356d5316f28bfa6966a4bb98c9ea98 And here's what you'll see: Earthjustice/Sierra Club 2025-EPA-05146 ED_018033_00000809-00001 SC_EVERSPLIT0030837

Message From: Sent: To: Killian, Cole [Killian.Cole@epa.gov] 2/3/2025 6:26:57 PM McNeilly, Andrew [mcneilly.andrew@epa.gov] I see Earthjustice/Sierra Club 2025-EPA-05146 ED_018033_00000879-00001 SC_EVERSPLIT0030894