CCP 07-13-1992 - Laserfiche WebLink

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. rI/,I~.-:J CONSULTING ENGINEERS Maier Stewart & Associates Inc. MEMO W: HONORABLE MAYOR AND CITY COUNCIL FROM: MARK GRAHAM, M.S.A. ;1!v RE: KEITHSON POND ASSESSMENT HEARING DATE: JULY 8, 1992 FILE: 520-029-20 As you know, the agenda for the July 13, 1992 City Council meeting includes the continuation of the assessment hearing for the Keithson Pond Drainage Improvements. Following the June 8, 1992 Council meeting, City Council members Malone and Hicks met with the former City engineering firm to discuss this project. The former engineer has indicated that the original intent for the pond was to provide an overflow outlet through a drainage swale and baffled weir located west of the pond on property owned by . Mr. George Reiling. However, the pond was never properly graded, the drainage swale was not improved, the baffled weir was not constructed and no easement was obtained over the Reiling property. While this natural drainage swale exists, it would be necessary to further excavate it to ensure that the Keithson Pond has an outlet. Excavation in the pond and drainage swale would consist of grading the pond from its present elevation of approximately 972.0 to establish an elevation of 969.0 to 969.5, excavation of the swale to provide positive drainage towards the southwest across Mr. Reiling's property and construction of a baffled weir, with a top elevation of 970.5, to meet Rice Creek Watershed District requirements. The first floor elevation of the home on the north side of the pond, owned by Mr. Mark Magers, is approximately 975.4, which is 4.9 feet above the top of the baffled weir. The next property to the north, owned by Mr. Dick Foster, has a backyard elevation of approximately 970.0 to 972.0 and a fust floor elevation of approximately 981.0. It would be necessary to place fill to a minimum elevation of 973.0 on Mr. Foster's property to eliminate the ponding on his property. This fill would be generated from excavation of the existing pond. File records and correspondence indicate that this grading work within the pond and drainage swale was the original intent of the project. There is no record, however, of a formal easement across Mr. Reiling's property to utilize this swale. . 1959 SLOAN PLACE. SUITE 200. ST. PAUL, MINNESOTA 55117 612.774.6021 9800 SHElARD PARKWAY. SUITE 102. MINNEAPOLIS. MINNESOTA 55441 612-546-0432 . Equal Opportunily Employer