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,- <br />~~=' <br />the reclarriation cost that may be imposed upon the Stale in a financial warranty forfeiture, and <br />must be covered by the reclamation bond. Assuming that the bore hole information <br />demons[ra[es tha[ the bedrock is no more than 36 feet below the surface and is an adequate <br />seepage barrier, the followine estima[e is provided as an example calcula[ion for a sand and <br />gravel mining operation slurry wall: <br />36'depth x 8323' length x 53.00/sq.ft. = 5887,976.00 direct costs <br />If the 309o regulated construction bond is selected the required bond for slurry wall <br />installation would be S 177,595.00. <br />Rewlatorv Responsibility <br />The final approval grid success criteria for the performance of the slurry wall to seal and isola[e <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 standazds will be met in the event the state becomes responsible for the site. <br />To release a slurry wall financial warranty, an operator must provide the Division documentation <br />of compliance with the State Engineer's lined reservoir performance standazds. (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 giael pits <br /> <br />