5.2 PCSR 01-24-2017 - Laserfiche WebLink

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The Site is located in the very northern portion of the City of Elk River and immediately east of US 169. The surrounding area is characterized by mining operations, the Elk River Landfill, agricultural operations and rural residential land use. Figure 3: Site and Surrounding Area, is an aerial photograph that illustrates the Site and surrounding area. 4.4.2 Site analysis: The Site has irregular topography characterized by open space with brush, grassland, and some wooded areas. The US 169 highway corridor borders the western perimeter of the Site. A five foot wide ATV trail and overhead electric lines run along the western boundary of the Site. Baldwin St. NW. runs to the east of the Site. Overhead electric and underground communications lines run along the eastern boundary of the Site. The elevation of the Site varies from about 978 to 1,046 feet above mean sea level (msl). Naturally occurring slopes range from 4 -74 percent across the Site. The average depth of topsoil is approximately one foot with three to five feet of silty overburden over the sand and gravel deposit. The Site is not located within a floodplain and there are no watercourses or wetlands on -site. There is a residence and associated outbuildings located in the northeastern portion of the Site. The existing house is to remain until the final mining Phase. Figure 4: U.S.G.S. Quad Map Excerpt, illustrates natural features of the Site and surrounding area. 4.43 Estimate of Quantity of Material to be Mined: The estimated net quantity of material to be excavated is approximately 9 million cubic yards. 4.4.4 Depth of Water Table: The elevation of the water table ranges from about 957 feet above msl in the southwestern portion of the Site to about 959 feet above msl in the northeastern portion of the Site. The direction of groundwater flow is towards the southwest. Mining is proposed top extend into the water table. 4.4.5 Average thickness of overburden The average thickness of overburden is estimated to be three to five feet, based on soil borings taken across the extent of the Site. 4.4.6 Detailed Map of Haul Routes Figure 5: Haul Routes, illustrates the extent of the haul routes within the City limits. Local roads will be used for approximately % mile to access US 169. County and state highways will be used for the majority of hauling. Local roads, beyond Baldwin to 225th Avenue NW, will be used only as needed for local deliveries. 4.5 Plan of Operation: Max Steininger, Inc.: Elk River Sand and Gravel Mine 4 1 P a g e Zone Change & Conditional Use Permit Application December 2016