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2) Site derived overburden and process fines will be used for backfilling. Backfilling will proceed via <br /> one lifts of material placement via bulldozer with subsequent compaction of each lift by <br /> bulldozer application. No toxic or acid forming materials have been encountered at this site and <br /> reactive soils,gravels,or clays are known to be found at this deposit. <br /> 3) Grading operations will take place in confined mining blocks within each phase area,connected <br /> to the site's drainage control plan, minimizing erosion and siltation of affected lands and <br /> neighboring properties by direction of surface water flow to sediment control ponds to capture <br /> sediment and allow for dispersion of meteoric water via infiltration and percolation. All <br /> highwalls created by mining operations will be eliminated. <br /> 4) Backfilling and grading will be completed as soon as possible after gravel extraction,with <br /> bulldozer pushing of overburden and planting media in N-S directions of 2-3 acres blocks of land <br /> within each phase area, maintaining as small as possible footprint of disturbed land during <br /> active gravel extraction. <br /> 5) No toxic or acid forming materials have been encountered at this site and no reactive soils, <br /> gravels,or clays are known to be found at this deposit. No refuse burial is anticipated to occur <br /> at this site. <br /> 6) No drill or auger holes are present or planned for. No adits or underground workings are <br /> present. Any future potential holes drilled for data or water purposes will be completed per <br /> best practices of drill hole abandonment State Engineer's recommendations. <br /> 7) All final land gradients will not exceed 3.1(H:V). This gradient will also apply to the floor <br /> gradient of the sediment pond structure located in the south end of the original permit area. <br /> 8) All final slopes will allow for safe equipment operation for purposes of reclamation and re- <br /> vegetation activities and will be compatible with surrounding topography and land form. <br /> 9) At this time,the mine operator has no plans to bury inert material sourced from outside the <br /> permitted area. In the event that this condition changes,the operator will meet the <br /> requirements of material handling rule 9.,a)through f). <br /> 10) The site's original permit area includes a large,flat area of land reflecting lowest elevations on <br /> the property which includes the scale house and sediment control pond. The area is bermed to <br /> contain and direct all surface flows towards the sediment pond for decantation and percolation <br /> of surface flow water thus minimizing any potential for release of pollutant to the neighboring <br /> surface drainage system. This surface water management system will continue to operate <br /> during mining of the amended acreage. The sediment pond will be removed at the conclusion <br /> of mining and reclamation activities. <br /> 11) No release of pollutants to groundwater will occur from any materials mined, handled or <br /> disposed of within the permit area. <br /> Ex�3K I✓ �.Z <br />