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sufficient in number ~md depth to establish the elevation of the water table <br /> <br />and soil types through.out the plat. <br /> <br />4. if the subdivision is to be serviced with on site systems, the Soil types <br /> <br />shall be identified. For each tot having tess than 30.000 square feet of <br />Class [ soils, the location of a septic field and alternative field must be <br />identified. <br /> <br />5. Locations and invert elevations of StOl.'m sewers and drainage ditches and <br /> <br />culverts within the plat and to a distance of 100 .feet beyond the plat. <br /> <br />o <br /> <br />Drainage area map of existim~ subdivisions showin~ the acreage of each <br />drainage area (existing and proposed) as well as providing the <br />predevelopment and post development runoff rate. in cIk, for the i0 year <br />m~d l O0 yem- storm events. - <br /> <br />7. Pre and post runoff calculations. <br /> <br />8. Size and type of each storm sewer :facility proposed. <br /> <br />Proposed method of disposing of surface water drainage and method of <br />conveying sm'face water drainage within and be,,,'ond the limits of the plat <br />to publicly owned or controlled drainage facilities o'r storm sewers. There <br /> <br />shall be no grades less thm~ 1%. When grades are less thm~ 2%. a <br />certificate of grading will be required prior to occupancy. The certificate <br />of grading shall, provide a statement from a registered land surveyor <br />stating that they have sur,,'eved the lot and determined that is contains no <br /> <br />grade flatter than 1% and contbrms to the approved grading pltm: <br /> <br />10. A development plan for each lot specifying house type, garage elevation~ <br /> minimum floor elevation, and lo,vest opening elevation. <br /> <br />11. <br /> <br />A table specifying house type. garage elevation, m.inimmn floor elevation, <br />.lowest opening elevation, street centerline m'ade. 100 year flood elevation, <br /> <br />and back yard and front yard slopes m'ust be provided. <br /> <br />12. Additional intbrmaion as requested by the City <br /> <br />9.50.03 <br /> <br />.Street Plan <br /> 1. Layout of existing and proposed public and private streets, showing <br /> right-of-way and pavemenI widths m~d proposed :names of streets. The <br /> mm~e' of an,,, street used in the City must be an. extension of an ah:eady <br /> named, street. <br /> <br />2. Existin~ and proposed ccnterline grades of public and private streets. <br /> <br />9.50 Subdivision Regulations <br /> <br />9-14 <br /> <br />March 2003 Draft <br /> <br /> -247- <br /> <br /> <br />