Secondary and Cumulative Impacts Master Management Plan - 2014

Article 3 Zoning Districts 3-73 RCOD-2, Resource Conservation Overlay District 2

(B) Redevelopment and expansions of any existing nonresidential development will be subject to the requirements of this section; however, the impervious surface coverage of the existing development is not required to be included when applying the impervious surface coverage limits of this section. 3-73-5 Uses Exempted Bona fide farms, including land held for forestry practices, are exempt from the provisions of this section, provided that farming constitutes the primary use of the property. Any use of farm property for non-farm purposes is subject to these regulations. 3-73-6 Development Standards The following standards apply in RCOD-2 district. The standards of both the RCOD-2 district and the underlying district will apply. Where the standards of the Overlay District and the underlying district differ, the more restrictive standards will control on lots created after May 31, 2005. (A) Stormwater Runoff Control (1) Peak stormwater runoff leaving any site for the one-year storm may be no greater for post development conditions than pre-development conditions. The same methodologies used to calculate stormwater runoff must be used for both pre- development and post-development conditions. (2) In addition to those activities exempted above, the stormwater runoff control requirements of this section will not apply to one or more of the following: (a) The increase in peak stormwater runoff between pre-development and post development conditions for the one-year storm is 10 percent or less. (b) The maximum impervious surface coverage of the lot is no more than 15 percent and the remaining pervious portions of the lot are utilized to convey and control the stormwater runoff of the lot to the maximum extent practical. In determining a subdivision lot's eligibility for this exemption, the amount of impervious surface coverage in a lot will be increased by the lot's proportional share of impervious surface coverage devoted to roadways and improvements in the subdivision and will be decreased by the lot's proportional share of subdivision parcels devoted to open space, had they been created as building lots. Any lot which is exempted from the runoff control requirements by this subsection, must comply with all the requirements of this section whenever: i. The exempted lot is subdivided; or ii. The exempted lot size is reduced by recombination; or iii. Impervious surfaces on the exempted lot equal or exceed the maximum allowable as determined in Section 3-73-6(A)(2)(b). (c) Compliance with the runoff limitations in Section 3-73-6(A) would result in greater adverse downstream impact, such as local flooding, as determined by County approved engineering studies. (d) The County reserves the right to require stormwater runoff control measures for projects without any measures, and the County reserves the right to require

Wake County Unified Development Code 3-49