The following policy shall govern the installation of all stormwater facilities within the corporate limits of the city and its extraterritorial jurisdictional area:
(A) A developer of a new subdivision shall provide, at his expense, a preliminary stormwater plan of the area to be developed. This study shall be submitted at the time of filing the preliminary plat and shall be approved by the City Engineer prior to the Planning Commission meeting at which consideration of the preliminary plat is considered. The plan shall include the requirements in § 154.122(A), for the preliminary stormwater plan. The preliminary stormwater plan may be waived in writing by the City Engineer if the subdivision plan clearly indicates that no stormwater problem exists.
(B) The developer shall have an engineer prepare the final plans for the installation and construction of all necessary stormwater facilities. These plans shall be approved by the City Engineer and shall comply with this subchapter and the standard water and sanitary sewerage specifications of the city.
(C) Cost distribution.
(1) The developer shall pay all engineering and construction costs of all stormwater facilities, including the cost of manholes, inlets, excavations, and the easement acquisition and construction for all required off-site drainage.
(2) Where a channel is constructed, the developer shall:
(a) Pay 100% of the concrete lining or concrete drain installed.
(b) Excavate the channel at his expense to the line and grade as shown on the approved construction plans.
(c) Provide all easements for channels, detention facilities, and storm drainage structures, as required.
(d) Install any pipe, trench excavation, inlets, manholes, guard rail, and other appurtenances and the like to complete the stormwater facilities.
(e) Pay 100% of the cost of any culvert, bridge or street crossing up to a roadway width of 42 feet, plus pedestrianways. If a roadway wider than 42 feet is required by the city, the additional cost of excess width may be paid by the city, upon approval by the City Council.
(f) Pay 100% of the cost of detention facilities, when required.
(D) Ownership and maintenance. All storm drains installed in connection with any development project which are in a public easement shall be and shall remain the property of the city, unless exception is approved by the City Engineer. All storm drainage facilities shall have a two-year maintenance bond.
(E) Drainage discharge from the subdivision. Where the stormwater discharges from the subdivision, the developer shall comply with the following:
(1) At the point of discharge, the velocity of the water shall not exceed the maximum velocity of Table I set forth in § 154.123(F) for the type of structure located downstream.
(2) Storm sewers shall discharge into either a storm sewer with adequate capacity, or into the main watercourse.
('68 Code, App. B, § 7.02) (Ord. 8-1989-34, passed 8-8-89)