08-16-1993 Planning PacketC - Laserfiche WebLink

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Zoning File1852 Aui7ust 13, 1993 Page 2 Additional Information to Assist Members in Their Review of the Application A. 10 cubic yards = 1 dump truck load B. 20,000 cubic yards of fill placed in a 12-acrc area produces 1’ of vertical rise. Total 100,000 cubic yards would result in 5’ vertical rise. History of Property Mr. Eisinger purchased the property in 1955 and in 1958 through 1970 operated a sanitary landfill (received garbage and refuse). The applicant obtained an annual license from the City each year of operation. In 1974 the applicant applied for a demolition landfill license from the City but was denied. Applicant estimates that there was anywhere from 6" - 8" to approximately 2’ of fill over the former dump prior to recent filling projects. It was applicant ’s former practice when operating dump to place 6" - 8" of clean fill over new dump areas. Review of Application Applicant received approval for a total of 100.000 cubic yards in the original conditional use permit. A major concern during that review was the potential impact on adjacent wetlands. The Engineer was concerned that the additional load on the site could force organic materials to move out causing a rise in the marsh area outside the fill site. Review Exhibit K. Braun Engineering provided a report during the first review noting that there would be slight risk of shear lailure if 5’ of soil would be placed above the top of the existing landfill. This report was based on fill being limited to 100,000 cubic yards. The current proposal seeks approval of an additional 70,000 cubic yards as 30,0(X) cubic yards have already been either received or will be received within the next few months. Review E.xhibit G. Gustafson ’s report notes that if additional fill over the total 100,000 cubic yards is to be requested by applicant in the future that a geotechnical study of the area be submitted with application. Please note that the original CUP of 1987 sought approval of 200,000 cubic yards and was held to 100,000 cubic yards based on the technical facts provided for that review. Applicant must provide updated permits for the filling of an additional 70.000 cubic yards. It should be noted that the DNR and Hennepin County Conservation District will not require review or permits as applicant will not be filling wetlands. Applicant will have to provide updated review and approvals from the Minnesota Pollution Control Agency, Ilermepin County* Department of Environment and Engineering, and the Mirmehaha Creek Watershed District. Staff noted in the Minnehaha Creek Watershed District’s review of the most current CUP that a grading plan and erosion control detail were submitted in May of ’93. The City would request copies of the plans.