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<br />the reclamation cost that maybe imposed upon the State in a financial warranty forfeiture, and <br />must be covered by the reclamation bond. Assuming that the bore hole information <br />demonstrates that the bedrock is no more than 36 feet below the surface and is an adequate <br />seepage barrier, the following estimate is provided as an example calculation for a sand and <br />grave] mining operation slurry wall: <br />36'depth x 8222' length x $3.00/sq.ft. _ $887,976.00 direct costs <br />If the 20% regulated construction bond is selected the required bond for slurry wall <br />installation would be $177,595.00. <br />Regulatory Responsibility <br />The final approval and success criteria for the performance of the slurry wall to seal and isolate <br />the reservoir-storage from the surrounding alluvial aquifer lies with the State,Engineer. The <br />Division of Minerals and Geology is required to hold financial warranties sufficient to assure that <br />the State Engineer's standards will be met in the event the state becomes responsible for the site. <br />To release a slurry wall fmancial warranty, an operator must provide the Division documentation <br />of compliance with the State Engineer's lined reservoir performance standards. (The <br />Memorandum of Understanding between the Division of Minerals and Geology and the Office of <br />the State Engineer describes in detail the division of responsibilities between the two agencies.) <br />attachment(s) <br />C:policy/policy on lined gravel pits <br />