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04004 <br />Banks and Gesso, LLC <br />season. The seeding of these stockpiles will also help reduce wind and water erosion, <br />compaction and other disturbances that may reduce its capability to support reclamation <br />vegetation. Only as much topsoil as needed to complete revegetation will be seeded <br />with the temporary seed mix. The remainder will be stockpiled with the overburden. <br />Final Grading <br />Pit edges will be backfilled to a minimum slope of 3:1. Water levels within the sealed <br />reservoirs are expected to be approximately 5 ft below existing grade on the site. <br />Contour furrows will be established on the shoreline slopes to reduce erosion and <br />encourage stable plant growth above the water line. <br />Topsoil Replacement <br />After overburden replacement in each phase, 6 to 12 inches of topsoil will be spread <br />over disturbed areas (above water levels) to provide a proper medium for revegetation. <br />Topsoil will be placed in lifts not to exceed 4-inches in depth and will not be re-spread <br />when the ground is frozen, excessively wet or otherwise unsuitable. Contour furrows will <br />be established on shoreline slopes to reduce erosion and encourage stable plant growth. <br />Soils that are excessively compacted will be chiseled or diced to break up compaction, <br />then harrowed down. <br />Reveoetation <br />All disturbed surface areas above water levels will be topsoiled and drill-seeded for final <br />reclamation with the seed mixes shown in Tables E-1 and E-2. If use of a grass drill is <br />not possible, seed broadcasting will occur at double the seeding rate. <br />Maintenance <br />Mowing in each phase will be performed for at least 2 years, or as necessary, following <br />seeding to help establish regenerating stands of grasses and to control weed infestation. <br />Seeded areas may be mulched with straw or hay mulch, if needed. Fertilizer will be <br />applied as necessary to areas of the site where poor nutrient availability is indicated by a <br />failure of seed to become established. <br />Weed Control Plan <br />Noxious weeds will be managed in accordance with the Colorado Noxious Weed <br />Management Act and Chapter 15, Article I of the Weld County Code. The Code <br />recommends Cultural, Mechanical, Biological, and Chemical methods of control for each <br />of these species. Nine weed species are designated for management by the County <br />Code and are listed below (not all of which are found on the subject site): <br />• Leafy Spurge (Euphorbia esula) <br />• Canada Thistle (Cirsium arvense) <br />• Musk Thistle (Carduus nutans) <br />• Scotch Thistle (Onopordum acanthium) <br />Field Bindweed (Convolvolus arvensis) <br />• Russian Knapweed (Acroptilon repens) <br />Fort Lupton Sand and Gravel Mine - L.G. Everist, Inc. September 20, 2004 <br />Amendment to Permit No M-1999-120 Page 10 <br />