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Memo - Drainage Review for Spirit Hills Center (Village Hills) City of Lino Lakes, Minnesota • Page 3 8. Rock entrances shall be provided at all construction site access points. June 26, 2002 9. A note is provided stating that grading on Larry Grubbs' property is permitted. It is not shown on the Plan where this property is located, or exactly what may or may not be permitted. The note should be revised to state that no grading shall be allowed beyond the site property, unless the Contractor attains authorization from adjoining property owners accordingly. The Contractor shall be responsible for any disturbances or encroachment upon adjoining private properties. 10. A note is provided stating adding peat and topsoil to root zone mixing. This must be more clearly explained as to where, what, etc. Reference to an appropriate specification or detail is needed. 11. Previous correspondence indicated that a right turn lane from southbound Ware Road to Birch Street will be needed. This should be reflected on the Plan to adjust the site grading accordingly. Storm Notes 1. A note should be included that all storm sewer pipe, manholes, and appurtenances shall adhere to the requirements and standards of the City of Lino Lakes. 2. For the PS -NW Outlet Structure, the normal elevation of the pond must be provided on the Plan. The outlet and ditch to Rice Lake must be reviewed and approved by the Watershed District to assure that the outlet is adequate. Drainage Calculations 1. HydroCAD Drainage Calculations have been provided. However, a site plan (existing and proposed) with specific drainage areas highlighted must be provided to allow for adequate review of the calculations. 2. The retention pond at the north side of the property must provide a permanent pool size that meets NURP standards in accordance with the requirements of the Rice Creek Watershed District and the City of Lino Lakes. A preliminary observation suggests that the pond is undersized. The Developer's Engineer shall submit calculations demonstrating that the project's storm water detention system does meet the treatment requirements of the Watershed and the City. •