Document pB9en8qrKoXQkvekZxLq8Rm4E

Inspector Well Inspection Osage DNR / Environmental Protection Agency 1201 Elm Street, Suite 500 Dallas, Texas 75270 Matthew Allen Inspection Date 04/09/2025 Time 11:20 Operator Representative Contango Resources, LLC Operator Info Contango Resources, LLC 1717 South Boulder, Suite 900 Tulsa, OK 74119 Phone: 918-392-3396 Inventory ID API Well No Lease Name Well ID OS5907000 MASON 1 Location NW 32 25N 06E Status Inactive Well Type Disposal Latitude 36.605507 Longitude -96.683142 Inspection Requested By Compliance Reason Staff Responsible Company at Contango Resources, LLC Time of Inspection Inspect No. Casing 4.5 Date Last MIT 07/24/2015 Tubing Last Test Fail Result USDW Monitoring N Device Elected Tubings Annulus AUTHORIZED Monitoring Device Fittings N N Max Pressure 0 FLM Canister Actual Pressure Max Volume 55000 Pressure Lease Status Active Determined? Max Inj Units Barrels Per Month Barrel Monitor N Hooked Up? Static Fluid Level Barrel Fluid Level (%) Determined? Flowline Hooked Y Injection Rate Up? (bpd) Injecting N Inspection Comments Well OS5907000 was connected but not injecting at the time of the inspection. There was no well sign to identify the well or current operator. EPA records indicate Contango Resources, LLC as the owner of record but the inspector received information the well may have been sold or is in the process of transferring ownership. At the time of the inspection, the well was overdue for MIT. Inspector Signature MATTHEW ALLEN Date: 2025.04.22 16:23:06 -05'00' Digitally signed by MATTHEW ALLEN Supervisor Signature JEANNE ECKHART Date: 2025.04.24 07:02:11 -05'00' Digitally signed by JEANNE ECKHART Contango Resources, LLC/Mason Lease (OS5907000) (UIC) Inspection Date: 04/09/2025 Appendix 1 Photograph Log 1 Photo UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Photograph Log Location: 36.605507, -96.683142 City: Burbank Photo No. 1 County/Parish: Osage State: Oklahoma Photo File Name: R0010635 Orientation: SSW Date of Photo: 4/09/2025 Time of Photo: 11:27AM Latitude: 36.605507 Longitude: -96.683142 Photographer: Matthew Allen Description: This was well OS5907000 at the time of the inspection. The well was connected but not injecting.