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Inspector Operator Info Location Well Inspection Osage DNR / Environmental Protection Agency 1201 Elm Street, Suite 500 Dallas, Texas 75270 Matthew Allen Inspection Date 10/16/2025 Time 11:30 Operator Representative Contango Resources, LLC Contango Resources, LLC Inventory ID OS2836000 1717 South Boulder, Suite 900 Tulsa, OK 74119 Phone: 918-392-3396 API Well No Lease Name NRU Well ID 4W6 SE 09 24N 07E Status Inactive Well Type Enhanced Recovery Latitude 36.567642 Longitude -96.551732 Inspection Plugging Witnessed Reason Responsible Company at Contango Resources, LLC Time of Inspection Inspect No. Casing 5.5 Date Last MIT 12/15/2015 Tubing Last Test Fail Result USDW Monitoring N Device Elected Monitoring Device FLM Canister Pressure Tubings Annulus Fittings N N Actual Pressure AUTHORIZED Max Pressure 680 Max Volume Lease Status Barrel Monitor N Hooked Up? Barrel Fluid Level (%) Flowline Hooked N Determined? Static Fluid Level Determined? Injection Rate Max Inj Units Barrels Per Month Up? (bpd) Injecting N Inspection Comments Inspector observed the surface restoration for well OS2836000. Areas of concern from the previous inspection on 9/22/2025 were fully addressed. There were no areas of concern at the time of the inspection. Inspector Signature MATTHEW ALLEN Date: 2025.12.10 09:21:45 -06'00' Digitally signed by MATTHEW ALLEN Supervisor Signature JEANNE ECKHART Date: 2025.12.10 13:02:07 -06'00' Digitally signed by JEANNE ECKHART Contango Resources, LLC/Naval Reserve Unit (OS2836000) (UIC) Inspection Date: 10/16/2025 Appendix 1 Photograph Log 1 Photo UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Photograph Log Location: 36.567642, -96.551732 City: Fairfax Photo No. 1 County/Parish: Osage State: Oklahoma Photo File Name: R0010765 Orientation: SSW Date of Photo: 10/16/2025 Time of Photo: 11:33AM Latitude: 36.567642 Longitude: -96.551732 Photographer: Matthew Allen Description: This was the location of well OS2836000, surface restoration was complete.