(A) The subdivider shall provide the subdivision with an adequate storm water sewer system whenever curb and gutter are installed and whenever the evidence available to the City Plan Commission indicates that the natural surface drainage is inadequate. A storm drainage analysis based upon a ten-year, one-hour rainfall shall be used as a basis for the drainage system. A copy of the analysis shall be submitted to the Commission with the drainage facility plans. When the surface drainage is adequate, easements for surface drainage shall be provided. Deep open ditches for drainage are not permitted in the street, but where curb and gutters are not provided, a shallow swale with its low point at least three inches below the elevation of the subgrade of the pavement may be permitted by the Commission, in accordance with § 3 in the Appendix following this chapter, provided that where existing natural drainage ways offer a suitable means of storm drainage, the street right-of-way be widened to accommodate them.
(B) Storm sewers shall, if practicable, be laid in the south and east parkway of the street in accordance with § 2 in Appendix A following this chapter. Otherwise, storm sewers shall be laid in easements provided for that purpose.
(C) In a subdivision where curbs and gutter are not provided, the subdivider shall furnish to facilitate roadside drainage and to assure suitable entrances for private driveways which are proposed to intersect the roadway. A corrugated iron pipe or a similar type pipe, at least 12 inches in diameter and 14 feet in length to be placed where required for each driveway.
(D) The plans for the installation of a storm drainage system shall be provided by the subdivider and approved by the Board of Public Works and Safety. Upon the completion of the storm sewer installation, the plans for the system as built shall be filed with the Commission.
(Ord. CO-67-5, passed 2-21-67; Am. Ord. 85-5, passed 5-28-85) Penalty, see § 10.99