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<br /> <br /> <br /> <br /> <br /> <br />September 22, 2022 <br /> <br /> <br />Kirk Daehling <br />Natural Soda LLC <br />3200 CR 31 <br />Rifle, CO 81650 <br /> <br /> <br />Re: Nahcolite Project - File No. M-1983-194 <br /> Natural Soda LLC <br /> Technical Revision (TR-49) <br /> Technical Revison <br /> <br />Dear Kirk Daehling: <br /> <br />On September 22, 2022 the Division of Reclamation, Mining and Safety concluded its review of the <br />Technical Revision application submitted to the Division on August 30, 2022, addressing the <br />following: <br /> <br />Technical Revision to install the previously approved subsurface subsidence monitoring well 17H-1V <br />SSMW in a different location to satisfy the EPA UIC permit requirements. The well will be drilled on <br />a new pad further to the east over the 17H-IR-E well path. <br /> <br />The decision reached by the Division is: approve. <br /> <br />The terms of Technical Revision No. 49 approved by the Division are hereby incorporated into <br />Permit No. M-1983-194. All other conditions and requirements of Permit No. M-1983-194 remain in <br />full force and effect. <br /> <br />The revised liability amount exceeds the financial warranty currently held (see below), please submit <br />additional bond or a rider to your existing bond that equals or exceeds the Revised Liability. The <br />revision will not be final until the bond is approved by the Division. <br /> <br /> <br />Bond Held: $3,913,706.00 <br />Prior Liability: $3,913,706.00 <br />Change in Liability: $519,625.00 <br />Revised Liability: $4,433,331.00 <br />Prior Permit Acreage: 12,248.00 <br />Change in Permit Acreage: 0.00