11/28/2001 Env Bd Packet - Laserfiche WebLink

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(c) Encroachment may occur in the flood plain areas of Flood Plain .Management Sector B if all the following conditions exist: (1) The encroachment lies within the floodway fringe area of the 100 -year flood plain in those areas where floodway has been identified, or in the absence of an established floodway, compensatory (live) storage is excavated. (2) The encroachment does not result in increasing the 100 -year flood profile within the floodway portion of the flood plain by more than 0.5 -foot or create velocities exceeding 2.5 feet /second or as determined by the District Engineer. (3) The encroachment does not violate the principle of "equal encroachment." (4) The encroachment does not result in violation of the District's Wetland Alteration Rule F. (5) Structures and facilities subject to flood damage built within the 100 -year flood will have two feet of freeboard between the lowest floor and the 100 -year flood profile. 4. DRAINAGE EASEMENTS. Applicant will provide drainage and flowage /ponding easements over flood plain areas inundated during the 100 -year flood and drainage easements within 100 feet from the centerline of Rice Creek, Hardwood Creek, Clearwater Creek, and Ramsey County Ditch #2, within fifty feet of the centerline of county and judicial ditches, or within twenty -five feet of the centerline of any major drainageway of the District. 5. REQUIRED EXHIBITS. The following exhibits must accompany the permit application. One set, full size; two sets, reduced to maximum size of 11 "x17." (a) Site plan showing property lines, delineation of the work area, existing elevation contours of the work area, ordinary high water elevation, and regional flood elevation. All elevations must be reduced to NGVD (1929 datum) . (b) Grading plan showing any proposed elevation changes. (c) Preliminary plat of any proposed land development. (d) Determination by a professional engineer or 21