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Lined Pit Guide 14 September 2000 <br /> SUMMARY <br /> Applicants proposing a developed water resources post mining land use through installation of slurry <br /> walls and clay liners may post a smaller reclamation bond through selection of the regulated <br /> construction option. If the factors that relate to the performance of slurry walls and clay liners <br /> discussed in this memo are addressed in the permit application, Operators will be eligible for the lower <br /> bond amount. These factors are addressed by supplying design plans, drawings, specifications, and a <br /> quality assurance plan that will be enforceable components of the reclamation permit. Applicants must <br /> also provide a statement that the plans and specifications, once approved, could not be altered without <br /> consent by the Division. The operator would be required to advise the Division of the schedule for <br /> construction so that inspections could be scheduled at appropriate times during installation. The <br /> operation would be further required to.provide a construction report detailing the installation of the <br /> slurry wall or liner, describing any problems that.occurred, and listing the results of testing that was <br /> conducted under the approved quality assurance/quality control plan. A certification would be required <br /> to accompany the construction report with a statement from the quality assurance engineer that the <br /> facility was constructed in accordance with the approved plans and specifications. The Division of <br /> Minerals and Geology encourages Applicants to use permit commitments and contingencies to reduce <br /> the amount of bond reauired for permitting of slurry walls and clay liners. The basis of any bonding <br /> scheme is predicated on the basis for all reclamation bonding; that at any point in the life of the <br /> operation of a pit, the state must hold sufficient bond to implement the approved reclamation.plan and <br /> establish the approved beneficial post mining land use. <br /> ATTACHMENTS: Policy memo dated 3/29/00 on lined sand and gravel pits, 6 pages. <br /> Addendum to the 3/29/00 policy memo, dated 5/9/00, 2 pages. <br /> m:\min\acs\lined pit guide.doc <br />