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COLORADO <br /> UDivision of Reclamation, <br /> Mining and Safety <br /> Department of natural Resources <br /> 1313 Sherman St. Room 215 <br /> Denver, CO 80203 <br /> December 7,2021 <br /> Mr.Kirk Daehling <br /> Natural Soda LLC <br /> 3200 CR 31 <br /> Rifle,CO 81650 <br /> Re: Nahcolite Project,Permit No.M-1983-194,Technical Revision Approval,Revision No.TR-47 <br /> Dear Mr.Daehling: <br /> On December 7, 2021 the Division of Reclamation, Mining and Safety approved the Technical Revision application <br /> submitted to the Division on November 30,2021,addressing the following: <br /> Update the Groundwater Sampling and Monitoring Program. <br /> The terms of the Technical Revision No.47 approved by the Division are hereby incorporated into Permit No.M-1983-194. <br /> All other conditions and requirements of Permit No.M-1983-194 remain in full force and effect. <br /> If the revised liability amount exceeds the performance bond currently held(see below),please submit additional bond. The <br /> revision will not be final until the bond is approved by the Division. <br /> Bond Held: $3,671,965.00 <br /> Prior Liability: $3,671,965.00 <br /> Change in Liability: $0.00 <br /> Revised $3,671,965.00 <br /> Liability: <br /> If you have any questions,please contact me. <br /> Sincerely, <br /> Amy C.Yeldell <br /> Environmental Protection Specialist <br /> t�k ( t0, <br /> 1313 Sherman St. Room 215 Denver, CO 80203 P (303)866-3567 F(303)832-8106 https://drms.colorado.gov I .I <br /> Jared Polis, Governor I Dan Gibbs, Executive Director Virginia Brannon, Director * *I <br /> f876'�/' <br />