(a) Storm drainage improvements shall be completed in accordance with the plans and profiles prepared for the subdivider by a registered professional engineer and shall be reviewed and approved by the City Manager and Council to meet the minimum requirements of the Storm Drainage Master Plan and Union’s “Standard Specifications and Construction Drawings for Public Improvements”. Storm drainage improvements shall be carried out under Municipal supervision within the time fixed or agreed upon by the City Manager, and all inspection and review costs shall be paid for by the subdivider.
(b) Natural drainage channels with protective easements, the width of both to be determined by the Municipal Engineer, shall be utilized for storm drainage removal in the absence of public storm sewer availability at the plat boundary. New drainage ditches where permitted shall be fully paved on the bottom and side slopes to a point one foot above the design depth when the velocities of flow exceed seven feet per second. Where new drainage ditches are not paved, they shall be seeded.
(c) Storm drainage, including drain tile around basements, shall not be permitted to discharge into any sanitary sewer, but shall connect to an adequate drainage outlet.
(d) Culverts and/or bridges shall be required where natural drainage channels intersect any street right of way or public walkways. Culverts shall extend across and beyond the entire right of way width of the existing or proposed street so that full street sections can be developed. The minimum diameter of a culvert pipe shall be eighteen inches with the exception of driveway culverts where permitted which may have a minimum diameter of twelve inches; however the minimum capacity of all culverts shall be approved by the City Manager prior to installation.
(Ord. 333. Passed 12-10-73.)