5.3. & 5.4. PCSR 06-09-2009 - Laserfiche WebLink

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The 109-acre property is currently used by a gravel mining operation. Photos of the SDA are • found in Exhibit 1. As has been the practice at the existing landfill facility, the SDA will follow behind mining operations by the current property owner, the Tiller Corporation. The Tiller Corporation has an approved CUP from the City of Elk River for mining the 109-acre site and continuing to operate shot-mix asphalt plant, which is located in the southeast portion of the site. Mining operations are allowed to occur to within 50 feet of TH 169 and 221St Avenue right-of way and within 200 feet of the right-of-way for the City's Railroad Hiking Trail. The proposed SDA project will consist of approximately 68.8-acres of lined MSW landfill area contiguous to the existing facility. Development of the SDA would be fully integrated into the contours, general design and operation of the existing permitted landfill. The proposed SDA will provide approximately 13,600,000 cubic yards of additional MSW design capacity over and above what was approved in the October 8, 2003 permit for the existing MSW landfill. Depending on waste flow quantities, this additional capacity would extend the operational life of the MSW landfill approximately 20-25 years, and provide long-term MSW landfill capacity for the City, Sherburne County, and the surrounding area. The proposed new MSW landfill capacity provides the opportunity to add a new gas to energy facility and provide additional green energy generation capacity. In addition, as part of the proposed project the ERL would like to work with the City and Sherburne County on a new Household Hazardous Waste Facility (HHWF) for area residents to drop-off household hazardous waste materials and recyclables. The proposed project required a mandatory Environmental Impact Statement (EIS) under the requirements of Minn. Rules.4410.4400, subp. 13(E). The Draft and Final EIS is provided in Exhibit 2. The EIS was completed in 2005 and approved in 2006. The Minnesota Pollution Control • Agency (MPCA) was the Responsible Governmental Unit (RGU) for the EIS, the purpose of which was to evaluate and disclose information about the significant environmental effects of the proposed action and evaluate alternatives. The EIS findings concluded that environmental impacts would likely be minimal, and that the proposed management and mitigation standards would meet or exceed regulatory standards. 1.2.1 INFRASTRUCTURE Expansion of the following existing infrastructure systems will be required as part of the SDA: Leachate collection and storage facilities. A new aboveground leachate storage tank is proposed. Gas extraction wells, piping, and monitoring probes will be installed in accordance with the site's New Source Performance Standards (NSPS) design plan that has been approved by the EPA. Groundwater monitoring wells in accordance with the site's permits and MPCA approved workplans. The SDA will be served by existing access points along TH 169. No access points along 221St Avenue are proposed. Once mining operations cease, the existing mining access along 221~t Avenue will be closed during landfill operations. Elk River Landfill SDA ~ Section 1-2 Land Use Application ~ ,.,~., ,~o , ~ Bonestroo WenCl<