(A) (1) Storm water runoff control facilities are required for all land uses, including, but not limited to, single- and multi-family residential, mobile home parks, urban and rural commercial, shopping centers, professional office, planned unit development, mixed land use, research parks, institutional, industrial and public uses. Such facilities are also required for other activities that include impervious surfaces that generate increased runoff requiring storage in accord with this chapter.
(2) These facilities may be designed for each individual site, but the use of regional facilities is encouraged.
(B) Runoff control facilities shall be designed so that no standing water will remain in detention basins during dry weather or that standing water in retention basins shall not be allowed to stagnate and present health hazards. The use of other methods of controlling peak discharge rates, such as bio- retention swales and structures and/or created wetlands, may be used if approved by the approving agency. The amount of water to be detained shall be determined by the methods described herein using the design criteria as set forth in §§ 154.035 through 154.038 of this chapter.
(C) Based upon location in the contributing watershed, alternative storm water management practices may be required by the approving agency if it is determined or can be demonstrated that detention of runoff will be detrimental to the overall hydrologic response of the watershed.
(Ord. 012-118, passed 10-8-2012)