Agenda - 01-19-1982 - Laserfiche WebLink

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6,23.1 d) Stream Buffers Included As part Of Minimum. Lot Size requirement Stream buffer s i ay be used as part of the required lot area car' tat size for residential and nonresidential developments. 6.23.1 } Existing Vegetat3oz? In Buffer Areas Existing forested areas or any healthy natural vegetation can not be removed from a stream buffer except when replaced with vegetation resulting in comParable stormwater runoff velocity and quantity one year after olanting. 6.23.1 f} stew Ve etation Tn ?Buffer Are�auied ` New vegetation shall be planted to capture non--source pollutants before they reach the perennial stream, ad per applicable Orange County standards. 6.23.2 Modified Size Re uirements In the Protected Watershed II IM) Di a) Irrespective of densities allowed by this ordinance, the development of any land or structure within the Protected watershed 11 district shall require one of the following: a) a minimum 5 acre lot size without ster+mwater management techniques. b) a minimum 2 acre lot size when provision is made to manage stor.iwater runoff. Runoff from the 1.0-year storm on the developed site shall not be greater than the rate of runoff on the same site prior to the proposed develop- ment. 6.23.3 Stor€nwater Runoff From ProDos.ed Developments To Be Minimized In Protected Watershed I (pw..1) District Stormwater runoff from the 10-year storm on the developed site shall not be greater than the rate of runoff on the same site prior to the proposed development. This provision shall applY to all major subdivisions. 6.23.4 Impervious Surface ted Watersheds An impervious surface is any surface through which water cannot penetrate or can only penetrate slowly. This would include paved streets and parking lots, concrete sidewalks, and structures why;ch. cover land. As a watershed becomes developed, the amount of impervious surface increases causing a decrease in soil absorption of storm water and an increase in direct runoff to streams with a resulting increase in potential water pollution. In order to promote infiltration of storm water into the maximum sail and minimize direct and-!mediate runoff into streams impervious surface ratios shall be required in protected Watershed I (p�%T-1) and Protected Watershed 11 (PVI-T1} Districts.