8.2. SR 11-07-2016 - Laserfiche WebLink

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The Project will comply with the mineral extraction performance standards established in the Elk River Code of Ordinances which are intended to prevent or minimize environmental and aesthetic impacts on extracted properties, adjacent properties and the community as a whole. The Proposers have developed plans to minimize and mitigate potential impacts including noise, dust, surface water runoff, groundwater contamination, traffic and aesthetics that may result from the extraction activities as required by the Ordinance. The Project includes the development of a comprehensive reclamation plan for the Site. Reclamation grades have been developed to provide continuity to surrounding land. The operators will work with the adjacent mining operators to coordinate reclamation grades with common mining borders as well as the City and MnDOT to facilitate future frontage road alignments as access improvements are developed along U.S. 169. The final landform is expected to be a combination of open water and upland areas which will support future development. c. Identify measures incorporated into the proposed project to mitigate any potential incompatibility as discussed in Item 9b above. Potential impacts of the mining and processing operations on adjacent residential land use include noise and dust, impacts to air quality, traffic impacts and general aesthetics. The Project will incorporate setbacks, buffers and screening to avoid or minimize potential conflicts with surrounding land use. Mining is a conditional use and is subject to specific performance standards established to control potential impacts generated by a mining operation. Proposed setbacks include a 30 foot setback from the all road right-of-ways and parcels not permitted for mining operations. Screening berms may be constructed within setback areas. Berms will be vegetated and provide visual screening. There are limited areas along Baldwin St. NW where the setback area is wooded. The vegetation in these areas will be left in place where practical to provide additional screening. Mining and processing operations will be further screened by the recessed nature of the operations within the mining area. Site operations will be subject to the Minnesota state noise standards. The standards establish allowable noise levels to protect nearby receptors. The noise standards vary according to land use. Residential areas including rural residential and farm houses are considered Noise Area Classification -1 (NAC -1), which is subject to the strictest standards. Noise standards are established for maximum noise levels for daytime and nighttime hours for the L50, the sound level that must not be exceeded for more than 50% of any given hour (30 minutes) and the 1-10, the sound level that must not be exceeded for more than 10% of any given hour (6 minutes). The table below lists the state daytime and nighttime noise standards for Noise Area Classification 1, residential receptors. Environmental Assessment Worksheet Page 9 Elk River Sand and Gravel Mines:Tiller Corporation and Max Steininger, Inc.