1995-01-26_AgendaPacket - Laserfiche WebLink

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GRASS LAKE WATER MANAGEMENT ORGANIZATION AGENDA ITEM Date: 1/26/95 Prepared by: .Karl P. eel Item: B-1 Hearings and Petitions Item Description: Roseville School District property-development proposal review Over the past two years, the Roseville School District has been. working on a proposal to redevelop approximately 80 acres owned by the school district south of Lake Owasso. This property is south. of South Owasso Boulevard, west of Western Avenue, and east of Dale Street. The. school district has hired the planning firm of Dahlgren Shardlow, and Uban to assist them in their development efforts. Jim Orr, of the engineering firm of Shoell and Madson, consultants to the school district, will be available at the GLWMO Board meeting to present the proposed development and to discuss the proposed. drainage. system. Specific information will be available regarding water. quality and its impact to Lake Owasso. Currently, the majority of this parcel. is landlocked and drains towards Wetland Basin 5, as identified on the attached drawing. Wetland Basin S is approximately 16 feet lower than Lake Owasso. Currently, stormwater is held in this basin until it percolates into the granular soils that exist on the site.. Stormwater from the proposed development will still reach this low wetland area. Because of the difficulty in estimating the rate,of percolation and the uncertainty of this wetland's ability to drain once development related sediment is deposited, a pumping station is proposed. that will discharge water directly to Lake Owasso.. Currently, the school district and City are discussing ponding requirements for both stormwater quantity and stormwater quality. Other issues regarding this project that affects GLWMO includes the reatment of steep slopes, erosion control, both during and following construction.: Protection of existing wetland. basins, andprotection of wildlifehabitat. Amore detailed summary of issues will be presented, at the January 26, 1995, meeting once Roseville staff has had an opportunity to•review the school district's submittal in more detail RECOMMENDED BOARD.ACTION: Following discussion of the proposed development, the board may wish to forward comments or recommendations to the City of Roseville's Planning Commission and City Council.