(a) When the City determines that site constraints compromise the intent of this regulation, off-site alternatives may be used that result in an improvement of water quality and a reduction of stormwater quantity. Such alternatives shall meet the following standards:
(1) Shall achieve the same level of stormwater quantity and quality control that would be achieved by the on-site controls required under this regulation.
(2) Implemented in the same Hydrologic Unit Code (HUC) 12 watershed unit as the proposed development project.
(3) The mitigation ratio of the water quality volume is 1.5 to 1 or the water quality volume at the point of retrofit, whichever is greater.
(4) An inspection and maintenance agreement as described in Section 1050.08(d)(10) is established to ensure operations and treatment in perpetuity.
(5) Obtain prior written approval from Ohio EPA.
(b) Alternative actions may include, but are not limited to the following. All alternative actions shall be approved by the City Engineer:
(1) Fees, in an amount specified by the City to be applied to community-wide SCMs.
(2) Implementation of off-site SCMs and/or the retrofit of an existing practice to increase quality and quantity control.
(3) Stream, floodplain, or wetland restoration.
(4) Acquisition or conservation easements on protected open space significantly contributing to stormwater control such as wetland complexes.
(c) Site Reductions. Another way for a developer or land owner to reduce the stormwater controls needed for a site is to reduce the amount of impervious area.
(1) Options such as pervious pavement, rain gardens, cisterns, or green roofs (along with other methods) need to be discussed with the City Engineer for approval and amount of reduction given.
(2) The developer can reduce the amount of stormwater quantity retained given the installation of applicable site reduction devices. There will be a maximum of fifty percent reduction depending on the approval of the City Engineer.
(Ord. 133-16. Passed 12-27-16.)