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13. Revised in accordance with preliminary plat comments and staff review <br /> letter <br /> <br />14. Additional information as requested by the City. <br /> <br />Final Grading Plan: <br />1. <br /> <br /> 9.50.04 <br />Topographic data, including contours at vertical intervals of <br />than two feet, except that where the horizontal contour interval is 100 <br />feet or more, a one foot vertical interval shall be shown. Water courses, <br />lakes wetlands, limits of flood plains and other significant physical <br />features shall be delineated. The ordinary high water elevation and 100 <br />year Flood Plain elevation shall be identified. U.S.G.S datum survey <br />shall be used for topographic mapping. <br /> <br />Soils data, including classification of all surface soils, in accordance <br />with the Soil Conservation Service Classification system and logs of <br />borings sufficient in number and depth to establish the elevation of the <br />water table and soil types throughout the plat. <br /> <br />If the subdivision is to be serviced with on site systems, the soil types <br />shall be identified. For each lot having less than 25% Class I soils, the <br />location of a septic field and alternative field must be identified. <br /> <br />4. Locations and invert elevations of storm sewers and drainage ditches <br /> and culverts within the plat and to a distance of 100 feet beyond the plat. <br /> <br />Drainage area map of existing subdivisions showing the acreage of each <br />drainage area (existing and proposed) as well as providing the <br />predevelopment and post development runoff rate, in cfs, for the 10 year <br />and 100 year storm events. <br /> <br />6. Pre and post runoff calculations. <br /> <br />7. Size and type of each storm sewer facility proposed. <br /> <br />Proposed method of conveying surface water drainage within and <br />beyond the limits of the plat to publicly owned or controlled drainage <br />facilities or storm sewers. <br /> <br />Lots with grades flatter than 2% must provide a certificate of grading <br />prior to issuance of the certificate of occupancy. The lots subject to this <br />requirement should be noted. <br /> <br />10. Lot corner elevations as well as drainage swale centerline grades at <br /> intersections of lot lines. <br /> <br />9.50 Subdivision l~egulations <br /> <br />9-14 <br /> <br />August 2003. Draft <br /> <br /> <br />