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COLORADO <br /> a Division of Reclamation, <br /> Mining and Safety <br /> Department of Natural Resources <br /> January 25, 2022 <br /> Kirk Daehling <br /> Natural Soda LLC <br /> 3200 CR 31 <br /> Rifle, CO 81650 <br /> RE. Nahcolite Project,Permit No.M-1983-194, TR-48 Reclamation Cost Estimate-Changes to <br /> Bond <br /> Dear Mr. Daehling: <br /> This reclamation cost update was in response to the technical revision request(TR-48)which was <br /> submitted on January 18, 2022. The Division is mandated to recalculate the reclamation cost <br /> estimate to ensure that the Financial Warranty adequately, reflects the actual current cost of <br /> fulfilling the requirements of the approved reclamation plan. <br /> Below is a table summarizing input values that have been updated with technical revision(TR-48) <br /> as compared to previous technical revision(TR-46) calculation. This table does not account for <br /> price changes resulting from inflation or other RS Means cost changes. <br /> Task Form Used Change Justification <br /> 02a Borehole + Added 17H-1V SSMW <br /> Please feel free to contact me with any further questions. <br /> Sincerely, <br /> A�r�� <br /> Amy Yeldell <br /> Environmental Protection Specialist <br /> op co <br /> mow, <br /> Physical: 1313 Sherman Street, Room 215, Denver, CO 80203 P 303.866.3567 F 303.832.8106 <br /> Mailing: DRMS Room 215, 1001 E 62nd Ave, Denver, CO 80216 https://drms.co[orado.gov <br /> Jared S. Polis, Governor I Dan Gibbs, Executive Director I Virginia Brannon, Director <br /> '�197- 4` <br />