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6.23.1 e) Existing Vegetation In Buffer Areas, <br /> Existing forested areas or any healthy natural vegetation can not be re- <br /> moved fr(n a stream buffer except when replaced with vegetation resulting <br /> in comparable Storm water run off velocity and quantity one year after <br /> planting. <br /> 6.23.1 f) New Ve22tation In Buffer Areas Required <br /> New vegetation shall be planted to capture non-source pollutants before <br /> they reach the perennial stream, as per applicable Orange County standards. <br /> 6.23.3 Reserved <br /> 6.23.4 ervious Surface Regulated in Protected Watersheds <br /> An impervious surface is any surface through which water cannot penetrate <br /> or can only penetrate slowly. This would include paved streets and park- <br /> ing lots, concrete sidewalks, and structures which cover land. As a <br /> watershed becomes developed, the amount of impervious surface increases <br /> causing a decrease in soil absorption of storm water and an increase <br /> in direct runoff to stream with a resulting increase in potential water <br /> pollution. <br /> In order to promote infiltration of storm water into the maximum soil and <br /> minimize direct and immediate runoff into streams impervious surface ratios <br /> shbll be required in Protected Watershed II (FW-II) District. <br /> MAMM IMPERVIOUS SURFACE RATIONS - 0.7 GROSS LAND AM <br /> ZONING DISTRICT LUI RESIDENTIAL NON RESTDENTIAL DEVELO.PPM <br /> AR 22 6.0% 6.0% <br /> 22 6.0% 6.0% <br /> RI 22 6.0% 6.0% <br /> 22 6.0% 6.o% <br /> R2 24 6.5% 6.5% <br /> 26 7.0% 7.0% <br /> R3 28 8.9% 8.9% <br /> 30 10.0% 10.0% <br /> R4 33 12.0%- 12.8% <br /> 35 14.2% 14,2% <br /> R5 38 1.7.0% 17.00' <br /> 0 <br /> 40 18.8% 18.8% <br /> R8 43 22.0% 22.0% <br /> 45 24.5% 24.1:% <br /> R13 - - - <br /> 50 31% 31.0% <br />