10-24-1988 - Agenda Packet City Council - regular meeting

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1� TO: Mayor Grabek Orono Council Members City Administrator Bernhardson FROM: Jeanne A. Mabusth, Zoning Administrator DATE: June 1, 1987 SOBJ: #1103 Howard Eisinger, 3245 Wayzata Blvd. - Conditional Use Permit - aesolution List of Exhibits - A - Braun Engineering Letter B - Council Notice of Action At Council's request, Mr. Eisinger's contractor, John Gannon has submitted the existing test data of 1974 to the original engineering firm that conducted the tests. Review Exhibit A, Braun Engineering states as follows: "it is our opinion that the proposed addition of five feet of mineral soil above the top of the existing landfill grades presents a very slight risk of shear failure." The following reasons are cited: 1. Past experience with similar landfill sites situated within a wetland. 2. Existing landfill material probably possesses high internal angle of friction and a high shear strength based on existing conditions. 3. Settlement -hat has occurred over the past 30 years will also increase the shear strength of the upper zone of organic soils . nd will lessen risk of shear as a result of placing an additional surcharge load. Staff has met with both Eisinger and Gannon to discuss the final preparatory steps required so that the permit at the 100,000 cubic yard level may be approved by Council. As Braun Engineering has suggested, we will ask that monitoring plates, minimum of 3, be placed along the edges of the fill area. Staff will be able to observe th ise plates upon inspections to determine if there is an abnormal rate of settlement. Staff has advised Gannon that the City will require a developer's agreement and appropriate security to insure that final grading and seeding will be completed even if the fill project as proposed is not realized. The Engineer's recommendations regarding erosion control, inspection schedule and monitoring fill project have also been referenced in this resolution.