28-14 Amend Chp. 1339 Storm Water Mgmt

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opment if the post - development peak discharge for a 100 -year fre- quency 24 -hour storm increases the existing peak discharge by one cubic foot per second or less using the TR -55 method of calcu- lation or other method approved by the city engineer. The city engineer can waive this requirement if existing storm sewers and drainage structures can safely handle the expected increase in flow. B. Only one exemption will be allowed per parcel. Any subsequent expansion must provide for detention or retention and must include the previously exempted area. (5) Where the city engineer determines that site constraints exist in a man- ner that compromises the intent of this regulation to improve the man- agement of storm water runoff as established in this section, practical alternatives may be used to result in an improvement of water quality and a reduction of storm water runoff. Such alternatives must be in keeping with the intent and likely cost of those measures that would otherwise be required to meet the objectives of this section. When pos- sible, all practical alternatives shall be implemented within the drainage area of the proposed development project. Practical alternatives can in- clude, but are not limited to: A. Fees shall be paid in an amount specified by the city engineer. These fees shall be applied by the City to storm water management practices that reduce existing storm water runoff. B. Implementation of off -site storm water management practices. C. Watershed or stream restoration. D. Retrofitting of an existing storm water management practice. E. Other practices approved by the city engineer in keeping with the intent of this section. (aa) Application Procedures for Construction Conservation Plans (CCP): (1) This plan will be combined with the post - construction water quality, ri- parian setback and wetland setback plans that have also been developed for the site. (2) Plans developed by the site owners and approved by the City in accord- ance with this regulation do not relieve the site owner of responsibility for obtaining and complying with all other necessary permits and ap- provals from federal, state, county, and local agencies and departments. If requirements vary, the most stringent requirement shall be followed. Plans submitted to the city engineer for review and approval shall be accompanied by all other required permits and documentation relevant to the project, including but not limited to the permits required and is- sued by the U.S. Army Corps of Engineers, Ohio EPA and ODNR Di- vision of Water. (3) The application must include a letter or report from the local county SWCD that states that the construction site conservation plan, the ripar- ian and wetland setback plan and the post - construction water quality 53