2023-08-01_INSPECTION - M2023022

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PERMIT #: M-2023-022 INSPECTOR’S INITIALS: ERR INSPECTION DATE: July 20, 2023 Page 2 of 6 OBSERVATIONS This pre-operation inspection was conducted as a part of a new 110c Construction Materials Limited Impact Operation Reclamation Permit Application for the proposed site known as CoProp Pit No. 1, File No. M-2023- 022. Elliott Russell, with the Division of Reclamation, Mining and Safety (Division or DRMS), inspected the site. Alec Cortez accompanied the inspection and represented CoProp LLC (Applicant). The 110c permit application was received by the Division on June 22, 2023. After the Applicant responded to the Division’s June 30, 2023 Notice of Filing Deficiencies, the application was deemed complete for filing on July 10, 2023. The Applicant stated that the public notice required by Rule 1.6.2(d) was published on July 12, 2023. Therefore, the public comment period closed on July 22, 2023. During the public comment period, the Division received two comment letters, one from History Colorado and the other from the Division of Water Resources. These letters will be provided to the applicant within the Division’s forthcoming adequacy review document. The proposed site is located roughly 3.1 miles northeast of Roggen, Colorado in southeast Weld County. The site is access by a private pre-existing oil and gas road by traveling south of Highway 34, approximately 8.66 miles. The application proposes a 9.99-acre permit for the extraction of sand. The northern half of the permit will contain the operation’s processing equipment and stockpiling area whereas the southern half of the site is where the sand will be extracted. Mr. Cortez stated that the plan is to mine the southern area in a horse-shoe manner, working counterclockwise to target two small ridges. He also stated that the 110c permit will be a large bulk-sample exploration project which will allow the Applicant to determine if the material can be economically mined, utilized as frac sand, and if a larger 112c permit is feasible. The public notice sign required by Rule 1.6.2(1)(b) was posted at the entrance to the site near the northwest permit corner. Proposed permit boundary markers were not in place during the inspection, however Mr. Cortez noted they would be installed following the approval of the application. Existing vegetative cover at the site mainly consisted of native grasses with various forbs. Blue grama, sideoats grama, purple three-awn, switchgrass, Indian ricegrass, and sunflowers were observed during the inspection. During the inspection, the Division did not observe any additional structures from those already included within the permit application. This concludes the Division’s Inspection Report; a subset of photographs taken during the time of the inspection are included below. If you need additional information or have any questions, please contact me at Division of Reclamation, Mining and Safety, 1313 Sherman Street, Room 215, Denver, CO 80203, by telephone at 303-866- 3567 x8132, or by email at elliott.russell@state.co.us.