Continental Resources, Inc. - Various Well Pads Partial Compliance Evaluation (PCE) On-Site Clean Air Act (CAA) Inspections Inspection Date(s): October 21-22, 2024 Inspection Report Date: December 27, 2024 Inspection Report Revision Date: US EPA Region 8 Representatives: April 3, 2025 Katelyn Bergl, Clean Air Act Inspector Youn Joo Kim, Clean Air Act Inspector Taylor Waanders, Clean Air Act Inspector North Dakota Division of Russel Martin, Inspector Air Quality Representatives: Myles Erb, Inspector Company Representatives: None Inspection Report Prepared Katelyn Bergl By: Youn Joo Kim Inspection Report Reviewed By: Applicable Rules: Scott Patefield, Manager, Enforcement and Compliance Assurance Division, Air and Toxics Enforcement Branch SCOTT PATEFIELD Date: 2025.04.10 14:00:12 -06'00' Digitally signed by SCOTT PATEFIELD North Dakota Administrative Code, Title 33.1, Article 15, as incorporated into North Dakota's EPA-approved State Implementation Plan at 40 C.F.R.

REPORT OF INDUSTRIAL USER COMPLIANCE SAMPLING INSPECTION AT Labconco Corporation 2500 Liberty Bell Road Fort Scott, Kansas 66701 KANSAS PRETREATMENT PERMIT: KSP000116 BY U.S.

REPORT OF RCRA COMPLIANCE EVALUATION INSPECTION At National Carwash Solutions 1500 SE 37th St.

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REPORT OF THE PRETREATMENT COMPLIANCE INSPECTION AT City of Columbia 4900 W.

REPORT OF RCRA COMPLIANCE EVALUATION INSPECTION At HAWKINS INC - CAMANCHE 2619 Camanche Industrial Park Road Camanche, Iowa 52730 563-243-2117 EPA ID Number: IAR000520098 On May 22, 2023 By TOEROEK ASSOCIATES, INC.

REPORT OF RCRA COMPLIANCE EVALUATION INSPECTION At TESLA-URBANDALE 2601 104th Street Urbandale, Iowa 50322 (515) 318-6048 EPA ID Number: None On June 6, 2023 By U.S.

REPORT OF RCRA COMPLIANCE EVALUATION INSPECTION At EAST PENN MANUFACTURING COMPANY INC. 2185 Highway 2 Corydon, Iowa 50060 (641) 872-2044 EPA RCRA ID No.

UNITED STATES ENVIRONMENTAL PROTECTION AGENCY REGION 8 RESOURCE CONSERVATION AND RECOVERY ACT GENERAL INFORMATION Facility Name: Hexcel Corporation RCRA ID: UTR000002527 Facility Location: 6700 West 5400 South, West Valley City, Utah Facility Contacts: Shelley Balback-Tucker, EHS Manager: Fibers, 801-938-4240 Joseph DiMartino, Environmental Engineer, 385-267-5426 Notification Status: Large Quantity Generator Dates of Inspection: August 24, 2022 & August 25, 2022 Arrival Time: 9:12 a.m. on 8/24/2022 Departure Time: 3:10 p.m. on 8/25/2022 Lead Inspector & Report Author: Annette Maxwell, U.S.

NPDES Tribal Wastewater Lagoon National Database Information Inspection Date: November 16, 2023 Inspection Type: CEI-Unpermitted Lagoon Entry/Exit Time: 13:00 - 14:30 NPDES ID Number: MTU000299 SIC Code: 22132-Sewage Treatment Facility Inspection ID: 202311_MTU000299 Lead inspector and affiliation: Lisa-kay Prideaux, U.S.

NPDES Inspection Report - Water Treatment Plant National Database Information Inspection Date: June 29, 2021 Inspection Type: CEI - Minor Entry / Exit Time: 8:30 am / 2:00 pm NPDES ID Number: WYDW0001I NAICS Code: 221310 Inspection ID: 202106_WYDW0001I Lead inspector and affiliation: Jessica Duggan / U.S.

Ref: 8WD-SDR September 16, 2024 SENT VIA EMAIL Lynn Myers, Admin Sweetwater Estates MHP 7040 Avenida Encinas, Suite 104 Carlsbad, California 92011 lynn@pacificstarmanagement.com Re: Notice of Noncompliance Revised Total Coliform Rule and Surface Water Treatment Rule Failure to Monitor (Routine Samples) PWS ID# WY5601737 C Dear Lynn Myers: The purpose of this letter is to inform you that Sweetwater Estates MHP has failed to complete the required monitoring for total coliform bacteria and distribution system chlorine residual because it has not submitted at least 1 sample per month.

Ref: 8WD-SDR November 15, 2024 SENT VIA EMAIL Shawn Cook, Owner All Seasons RV Park 356 Jack Smith Road Rozet, Wyoming 82727 cookxyz@gmail.com Re: Notice of Noncompliance Revised Total Coliform Rule Failure to Monitor (Routine Sample) PWS ID# WY5601658 NC Dear Shawn Cook: The purpose of this letter is to inform you that All Seasons RV Park has failed to conduct the required monitoring for total coliform bacteria for not submitting at least 1 sample per month.

Ref: 8WD-SDB February 19, 2024 SENT VIA EMAIL Mike Patton, Operator Wilson Gas P.O.

Ref: 8WD-SDR February 5, 2025 SENT VIA EMAIL Charles Cory Rietz, Board President Thirty-Three Mile Road I&S District P.O.