6. SPSR 09-03-2010 - Laserfiche WebLink

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The property consists of 152.8 acres of wooded, wetland and open space areas. The wetlands have been delineated on the site. There are 11 wetland basins on the site itself encompassing a total of 40.95 acres. The individual wetlands range in size from 0.05 to 16.70 acres. Upland areas of the site drain to the wetland basins which have a general overflow direction to the northeast. There is a manmade ditch running through the most northeasterly wetland basin that flows off site towards the northeast. Land cover is illustrated on Figure 2, an aerial photograph of the site. G The elevation of the wetlands ranges from 945-965.9 feet above mean sea level (msl). The upland areas reach elevations over 1020 feet above msl. Slopes vary throughout the site. Slopes adjacent to some of the wetlands are up to 40-50% (2.5:1 to 2:1 -horizontal to vertical). There is a prominent ridge running north-south through the property. The topography immediately surrounding the site is similar in nature, although many of the adjoining properties have been disturbed from mining activity. Figure 3 is a U.S.G.S. Quad map excerpt that illustrates the site setting with respect to the surrounding area. The depth of topsoil on the site varies, but averages from approximately six to 24 inches in areas to be mined. There is one abandoned residential garage on the site itself and there is a commercial site with one building located within 100 feet of the western property line. Elk River Extreme Motor Park is adjacent to the site western property line. Land use surrounding the site includes commercial, agricultural and mining. This property, as well as properties to the north, east and west of the site, is included in the gravel-mining district studied in the Environmental Impact Statement (EIS) approved by the City of Elk River in June 1994 (City of Elk River, May 1994). Properties immediately north of this property were added to the gravel-mining district in 2004. These added properties were both subjects of Environmental Assessment Worksheets prepared in 2004. This property is zoned for mining and guided for mining in the 2004 comprehensive plan. There are several isolated wetland basins located throughout the site. These wetlands have been field delineated. A wetland delineation report was submitted to the City, the LGU, on August 19, 2010. ' Mining will directly impact two small wetland basins, wetland basin 8, encompassing 0.13 acres and wetland basin 13, encompassing 0.59 acres. A wetland replacement plan will be submitted for approval ' Tiller Corporation Page 14 Conditional Use Permit Application August 30, 2010