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e. Water Pollution: <br /> The site is operated in compliance with all applicable Minnesota Pollution Control <br /> Agency and Department of Natural Resources regulations for the protection of water <br /> quality. A National Pollution Discharge Elimination Permit (NPDES) will be obtained for <br /> the site. Fuel if stored on-site, will be stored in above ground tanks with secondary <br /> containment provided in accordance with MPCA regulations. <br /> f. Topsoil: <br /> Topsoil is retained on the site until the completion of restoration. Topsoil has been used <br /> to create screening berms and these berms may subsequently be removed as part of the <br /> final reclamation process. <br /> g. Slopes: <br /> The active mining face will be sloped no steeper than 1:1. Reclaimed slopes will be <br /> backfilled to a maximum slope of 4:1 or to maximum slope approved for landfill <br /> construction. <br /> Page 18 <br />