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Lined Pit Guide 14 Sektember 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 aze addressed by supplying design plans, drawings, specifications, and a <br />_ _ _ quality assurance~lan that yvi11 be_enforceable Components. of the reclamation pErmii. _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 required 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:~nin\acsUined pit guide.doc <br />