8.2. SR 11-07-2016 - Laserfiche WebLink

Home Browse Search

Mineral excavation operations and related facilities are a conditional use within the mineral excavation overlay district. Two separate Conditional Use Permits (CUP) will be requested, one for the Steininger property and one for the Tiller property. The Project will allow the mining and processing of a high quality deposit of sand and gravel that will be processed for use as construction aggregates to serve the growing demand within the local area and the City of Elk River. The Site is surrounded by several other mining operations and is located adjacent to the Elk River Mining District Environmental Impact Statement (Elk River EIS) study area. Although not included in the study area, much of the information gathered in the study is relevant to the Site. Active mining will begin by stripping topsoil and overburden from the Site using scrapers, excavators, off-road trucks and dozers. Overburden and topsoil will be shaped into perimeter berms. Extraction of the aggregate deposit will be accomplished with loaders and excavators. Mining will extend into the water table. Processing will include crushing, screening, and washing. Recycled concrete and asphalt will be processed at the Site. Equipment and screening berms will be placed to insure compliance with both daytime and nighttime noise standards. Reclamation will include backfilling, sloping and establishment of grades which accommodate the final land use of the Site. Some of the materials used for backfilling may include clean fill imported from construction sites. The Proposer's will work with each other and adjacent mining operators to the north and south of the Site to mine and reclaim common mining borders. Baldwin St. NW may also be lowered in the future in coordination with adjacent mining operations. There will be minimal amounts of solid waste generated by the Project. There is an existing residence, garage and outbuildings, located on the northeast parcel of the Site which will eventually be removed, creating a minimal amount of demolition debris. If Baldwin St NW is lowered, an additional out building located east of the road will also be demolished. All demolition waste generated from removal of these existing structures will be hauled to a licensed disposal facility. No permanent structures will be constructed on-site. The Project (including both proposed mining sites) is estimated to last 30 years or more. Vertical road profiles adjacent to mined areas were one of the main transportation issues studied in the Elk River EIS. The City recognized that leaving existing roads at their original elevations would prohibit future development by making them inaccessible from adjacent property and create potential for structural instability caused by erosion. The Elk River EIS concluded that the roads should be lowered along with the surrounding property. As mining has progressed through the gravel mining district, roads have been realigned and their vertical profiles lowered, consistent with the mined areas reclamation grades. Examples include portions of 221ST Ave NW, and County Roads 77 and 33. It is likely that Proctor Road NW and 213th Ave NW will be lowered in the future. Environmental Assessment Worksheet Page 4 Elk River Sand and Gravel Mines:Tiller Corporation and Max Steininger, Inc.