§ 406.050. Drainage System., Chapter 406. Subdivision Design and Improvements, Unified Development Code, Code of Ordinances, Blue Springs

General Standards.

In the planning and design of stormwater management systems in the City of Blue Springs, the design criteria set forth in the latest edition of the Blue Springs, Missouri, Design and Construction Manual shall be used. This document is hereby referenced and made a part of this Chapter as though expressly incorporated herein.

It is the policy of the City to encourage the owner to locate and design streets, blocks, lots, parks and open space in such a manner as to reduce the velocity of overland flow, allow the maximum opportunity for infiltration of stormwater into the ground, and to preserve existing streams, channels, detention basins and floodplain areas as open space.

Where the stormwater management plan, as approved by the Director of Public Works, indicates that the proposed development will aggravate downstream drainage or flooding problems, provisions shall be included in the design of storm drainage improvements for the temporary controlled detention of stormwater runoff and its regulated discharge to the downstream storm drainage system. If stormwater detention is required, the criteria and policies set forth in the following Subsections shall be applied in the design and development of the final stormwater management plan for the proposed project.

Floodplains. When the proposed development abuts, includes, or encompasses a portion of a floodplain, as defined herein, the professional engineer preparing the stormwater management plan shall review and in all ways comply with requirements of other City ordinances regarding construction of buildings and other development in the floodplain areas of the City. The engineer shall also consult the flood insurance study as previously prepared for the City by the Federal Insurance Administration. Any modification to the floodplain shall be submitted to the Federal Emergency Management Agency (FEMA) for a revision to the National Flood Insurance Program (FIRM) maps. All cost for the map revision or amendment shall be at the expense of the owner.

Initial Construction. The stormwater management system, BMP facilities, distribution systems for drinking water, streets and the sanitary sewers for the property shall be constructed by the developer, its successors and assigns, in accordance with the plans and specifications (the "plans") approved by the City and in accordance with the Blue Springs Municipal Code, the Blue Springs Unified Development Code and all other applicable regulations.

On-Site Stormwater Management System And BMP Facilities — Maintenance. Except as otherwise expressly provided below for the public portion of the stormwater system, the developer and its successors and assigns, including the Homeowners' Association, shall at all times adequately maintain the stormwater management system and the BMP facilities as approved for the development in the approved plans. The facilities to be maintained shall include all pipes and channels built to convey stormwater to the BMP facilities, as well as all structures, improvements and vegetation provided to control the quantity and quality of the stormwater. "Adequate maintenance" is herein defined as maintained in good working condition so that the stormwater management system and the BMP facilities fully and completely perform and function as designed and do not adversely affect other elements of the overall stormwater.