§ 161.10 Compliance Required

Each development subject to the requirements of this chapter will comply with the City’s mandate to improve storm water quality and manage storm water quantity within the City. The developer is deemed to have complied with the City’s mandate to improve storm water quality and manage storm water quantity if the development:

1. Treats the water quality volume resulting from a rainfall depth of 1.25 in accordance with the City storm water standards.

2. Provides channel protection storage volume and extended detention in accordance with the City storm water standards.

3. Provides overbank flood protection in accordance with the City storm water standards.

4. Provides an emergency overflow spillway (including one-foot freeboard) and designated overflow route for extreme rainfall events. The spillway must be designed for the 100-year event and assuming the initial outlet controls are completely blocked.

5. Provides storm water BMP facilities which are constructed and function in accordance with the approved design. The property owner or applicant must provide to the City an as-built plan detailing dimensions and elevations as well as certification that the approved facilities were installed and properly working. The as-built plan must be completed by an Iowa-licensed professional engineer and submitted to the City prior to the acceptance of any improvements or issuance of any certificates of occupancy.

6. Provides for all BMPs selected to be utilized in each development to be designed, constructed, and maintained as required by the City storm water standards.