(a) The Oakland County Water Resources Commissioners “Stormwater Engineering Design Standards”, as amended from time to time, are hereby adopted by reference by the Village of Franklin for the control and treatment of stormwater runoff. All developments subject to this chapter shall provide acceptable water quality treatment BMPs designed to achieve eighty percent removal efficiency of total suspended solids from the runoff produced by a water quality storm.
(b) These Standards are established in addition to the existing Engineering Design Standards in Chapter 1228 of the Codified Ordinances.
(c) These Standards shall apply to all new construction, redevelopment, infill, or site expansions in the Village that include an area of disturbance of one acre or more, including projects less than one acre that are part of a larger plan of development or sale that would disturb one acre or more.
(d) All permanent and temporary stormwater management BMPs constructed as part of the requirements of this section are subject to this chapter.
(e) These Standards may include the use of stormwater credits where low impact development, open space preservation, or other site design practices have been used to maintain the predevelopment site hydrology.
(f) This chapter also applies to any activities which may affect the quantity or quality of a private or stormwater conveyance system or any waterway within the Village. Any person(s) engaged in activities that may result in excessive quantities of pollutants entering any stormwater conveyance systems or waterways may be subject to the remedies for violation of this section. Examples of such pollutants may include, but are not limited to, debris, concrete washings, de-icing materials, fertilizers, heavy metals, automobile fluids, topsoil, yard wastes, and commercial or light industrial wastes.
(g) Natural swales and channels should be preserved, whenever possible. If channel modification must occur, the physical characteristics of the modified channel will meet the existing channel in length, cross-section, slope, sinuosity, and carrying capacity. Streams and channels will be expected to withstand all events up to the two- year storm without increased erosion.
(Ord. 2010-10. Passed 12-13-10; Ord. 2023-09. Passed 12-11-23.)