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COLORADO <br /> Division of Reclamation, <br /> Mining and Safety <br /> Department of Natural Resources <br /> May 15, 2023 <br /> Justyn Hamilton <br /> US, LLC <br /> P.O. Box 7812 <br /> Loveland, CO 80537 <br /> RE: Division's Financial Warranty Cost Estimates for Brownstone Quarry(M1997-065) <br /> Dear Mr. Hamilton, <br /> On April 27, 2023 the Division performed an inspection as part of the Division's Routine Monitoring <br /> Program of the Brownstone Quarry. As part of the inspection the financial warranty for the mine was <br /> calculated.The Division used observations made during the inspection, and permit file information <br /> during the cost estimate calculations. <br /> A copy of the mine's reclamation cost estimate is attached for your review. The Division will allow 14 <br /> days or until May 29, 2023 to review and comment on the reclamation cost estimate prior to issuing a <br /> surety increase notice for the Brownstone Quarry. Once the surety increase is issued by the Division, <br /> the Operator will have 60 days to provide the additional financial warranty. <br /> If you need additional information or have any questions, please contact me by telephone at 303-866- <br /> 3567 x8114, or by email at patrick.lennberg@state.co.us. <br /> Sincerely, <br /> Patrick Lennberg <br /> Environmental Protection Specialist <br /> Attachment: Reclamation Cost Estimate <br /> cc: Jared Ebert, DRMS <br /> ec: Justyn Hamilton, US, LLC,justyn.hamilton@gmail.com <br /> ��OF COZ0 <br /> 1313 Sherman Street, Room 215, Denver, CO 80203 P 303.866.3567 F 303.832.8106 https://drms.colorado.gov/ ye � 0 <br /> Jared Polis, Governor I Dan Gibbs, Executive Director I Virginia Brannon, Director I * * <br /> 1876 <br />