5.2.-5.4. PCSR 09-13-2011 - Laserfiche WebLink

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Per the terms of the May 25, 2011 Agreement, the expanded Landfill consists of 27.2 acres of lined MSW landfill area contiguous to the existing Landfill. Development of the expanded Landfill would be fully integrated into the contours, general design and operation of the existing Landfill. The expanded Landfill will provide approximately 4,962,000 cubic yards of additional MSW capacity. Assuming the annual waste flow into the Landfill, including the expanded Landfill, are consistent with the historic average of 336,048 cubic yards/year, this additional capacity would extend the operational life of the MSW landfill approximately 18 years. Per the May 25, 2011 Agreement, all landfilling within the expanded Landfill will be completed by December 31, 2030. The expanded Landfill was included as part of the much larger 73.4-acre expanded Landfill that required a mandatory Environmental Impact Statement (EIS) under the requirements of Minn. R. 4410.4400, subp. 13(E). The Draft and Final EIS for the initially proposed 73.4-acre expanded Landfill have previously been provided to City. The EIS was completed in 2005 and approved by the Minnesota Pollution Control Agency (MPCA) in 2006. The EIS findings concluded that environmental impacts of the much larger 73.4-acre expanded Landfill would likely be minimal and 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 expanded Landfill: ^ Leachate collection and storage facilities. ^ Gas extraction wells, piping, and monitoring probes will be installed in accordance with required regulations. ^ Groundwater monitoring wells in accordance with the site's permits and MPCA approved workplans. The expanded Landfill will be served by existing access points along TH 169. 1.2.2 SITE SCREENING Other than the requisite setbacks, mining is currently allowed to occur within the entire SDA but not within the southern-most 200-foot buffer on ERL's existing 137.4-acre landfill property. An application for the mining of the 200-foot buffer on ERL's existing property is being submitted by Tiller Corporation concurrently with the submittal of this application. Screening will be done per the terms of the May 25, 2011 Agreement, and it is reflected on Drawing 5 °Screening Plan." This includes planting trees and vegetation along facility access roads, perimeter roads and future sedimentation ponds located along the proposed eastern, southern and western sides of the affected property. 1.2.3 EXPANDED LANDFILL DESIGN The expanded Landfill is designed to dispose of non-hazardous solid wastes. The design as well as the construction and operation of the landfill are governed by MPCA, County and City. Each of these three regulatory bodies has performed or will perform a review of the general landfill design as well as reviewed the environmental impacts of the landfill development through an EIS. The design of the expanded Landfill incorporates astate-of-the-art composite liner system and two feet of compacted clay soil barrier overlain by a 60 mil high density polyethylene flexible membrane liner. Together, these two components of the liner system prevent contaminants from Elk River Landfill SDA Section 1-2 Land Use Application tN~C1Cl` ELK Al VEA LAhoFtti