Document 712EDry3Rom86D9RYmBerkog6

Inspector Inspection Due Matthew Allen Well Inspection Osage DNR / Environmental Protection Agency 1201 Elm Street, Suite 500 Dallas, Texas 75270 Inspection Date 02/15/2023 Time 12:35 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 OS2859000 NRU 11W15 Location SE 16 24N 07E Status Active Well Type Enhanced Recovery Latitude 36.562342 Longitude -96.565272 Inspection Reason MIT Responsible Company at Time Contango Resources, LLC of Inspection Inspect No. Date Last MIT 11/07/2017 Last Test Result Acceptable Casing 3.5 Tubing 2.06 USDW Monitoring Device Elected Monitoring Device FLM Canister Tubings Fittings N Actual Pressure 275 Annulus N 10 AUTHORIZED Max Pressure 42 Max Volume Pressure Lease Status Active Determined? Max Inj Units Barrels Per Month Barrel Monitor N Hooked Up? Barrel Fluid Level (%) Flowline Hooked Y Static Fluid Level Determined? Injection Rate Up? (bpd) Injecting Y Inspection Comments Inspector witnessed Standard Annulus Pressure Test (SAPT) on well OS2859000. Pressure, hold OK. I observed no areas of concern at the time of the inspection. EPA enforcement staff will review inspection data to determine compliance with EPA UIC regulations. Rose Malanga (Lead), Nick Bruno and Mike McFadden participated during the inspection as part of the On the Job Training requirement associated with the SDWA/UIC inspector credentialing process. Initial: 408psi Mid: 405psi Final: 406psi Pressure Hold OK Inspector Signature Supervisor Signature Total flowback: 3100ml Packer Depth: 2507' MATTHEW ALLEN Date: 2023.03.15 12:31:07 -05'00' Digitally signed by MATTHEW ALLEN DAMON MCELROY Digitally signed by DAMON MCELROY DN: c=US, o=U.S. Government, ou=Environmental Protection Agency, cn=DAMON MCELROY, 0.9.2342.19200300.100.1.1=68001003655653 Date: 2023.03.17 16:47:51 -05'00' Contango Resources, LLC/ NRU (SDWA) OS2859000 Inspection Date: 02/15/2023 Appendix 1 Photograph Log 1 Photo UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Photograph Log Location: 36.562342, -96.565272 City: Fairfax Photo No. 1 County/Parish: Osage State: Oklahoma Photo File Name: R0010073 Orientation: W Date of Photo: 02/15/2023 Time of Photo: 12:32 PM Latitude: 36.562342 Longitude: -96.565272 Photographer: Matthew Allen Description: This was well OS2859000 at the time of the inspection.