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571-6066 6875 Highway No. 65 N. E. klUBURBAN P.O. Box 32308 IVGINEERING Minneapolis, Minnesota 55432- q t NC 890-6510 ® a Civil, Municipal & Environmental Engineering 12350 River Ridge Blvd. Land Surveying Land Planning • Soil Testing Burnsville, Minnesota 55337 MFI August 10, 1984 City of Roseville C/O Mr. Ran Moorse 2660 Civic Center Drive Roseville, MN 55113 Re: Venture Addition; Proposed Fuddruckers Restaurant Drainage Plan Gentlemen: Enclosed are six (6) copies of the preliminary drainage plan for Fuddruckers Restaurant "in Venture Addition in Roseville. Design was based on an approved "master" plan for drainage in Venture Addition as approved by the Rice Creek Watershed District. The aforementioned master plan allowed for the type of development shown using an assumed average runoff factor of 0.85. Storm sewer piping and appurtenances were designed for a rainfall frequency of once in 5 years. The basic overall plan for Venture Addition is to convey all runoff to a large storage pond in the northeast corner of the Compten property, The pond was designed using the "Hydrograph Method" for 24 hour, 4 day, 10 day, 5 year and 100 year frequency storms. Drainage from the Fuddruckers Restaurant site will be conveyed to the basic storm sewer system generally as shown on the prelimary drainage plan and as follows: 1) Runoff from the restaurant and the area immediately surrounding the restaurant would be collected by storm sewer connected to the system being constructed for the Cattle Company. 2) The eastern portion of the property would drain to the existing 27" storm sewer east of the property; 3) The remainder of the property between the restaurant would be conveyed to a proposed catch basin on the existing 27-inch storm sewer through a temporary swal e as shown. Fine Associates will grant Fuddruckers an easement for this purpose. Therefore, all runoff will flow to the existing system and then to the pond with limited surface drainage to public streets, Wm. E. Jensen, Reg. Eng. Wrn. E. Price, Reg. Eng. H. William Rogers, Reg. Suru. Gary R. Harris, Reg. Surv. Eugene A. Lindhom, Reg. Eng. William J. Brezinsky, Reg. Eng. Robert Sikich, Reg. Surv. Bruce A. Paterson, Reg. Eng. Daniel P. Johnson, Reg. Eng.