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RIDER TO MINING PERMIT <br /> Permit Date: February 12, 1998 <br /> Permit No: M-97-058 <br /> The following additional stipulations and conditions form an integral part of the foregoing permit: <br /> Stipulation No. Description <br /> 1. The operator must do one of the following four options: <br /> a. Provide an alternate reclamation plan which shows Phase 2 and 3 as groundwater lakes. The <br /> operator will show evidence of compliance with the Office of the State Engineer, Division of Water <br /> Resources for this end use prior to exposure of groundwater in Phases 2 or 3. <br /> b. Provide a design for the slurry wall done by a registered professional engineer. This design will <br /> be incorporated into the permit as a construction quality assurance plan and will be enforceable by <br /> DMG. Also, the Operator will provide a monitoring program for construction of the slurry wall <br /> to assure it is constructed according to plan and will provide a testing program to determine if the <br /> slurry wall is constructed properly. The Operator will provide a financial warranty for the amount <br /> of 25% of the construction cost of the slurry wall. No groundwater in Phases 2 or 3 will be exposed <br /> prior to final construction of the slurry wall and written acceptance of the construction and quality <br /> assurance/quality control report by DMG. <br /> c. Provide a financial warranty in the amount sufficient to backfill Phases 2 and 3 with earthen and <br /> inert materials in the event that the slurry wall fails. No groundwater in Phases 2 or 3 may be <br /> exposed until the financial warranty is provided and approved by the DMG. <br /> d. Provide a financial warranty to cover the cost of the construction of the slurry wall in the event that <br /> DMG is required to complete the slurry wall. no groundwater in Phases 2.or 3 may be exposed <br /> until the financial warranty is provided and approved by DMG. <br /> MINED LAND RECLAMATION BOARD <br /> COLORADO DEPARTMENT OF NATURAL RESOURCES <br /> MICHAEL B. LO <br /> Division Director <br /> M:\OSS\BDC\TFMP\MAP29058.GSC <br />