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Article 4: Overlay Zoning Districts 18 <br /> Section 4.2: Watershed Protection <br /> IMPERVIOUS TABLE 4.2.6: • POND REQUIREMENTS <br /> DISTRICT IMPERVIOUS SURFACE/DETENTION POND REQUIREMENTS(NON-RESIDENTIAL) <br /> 5-acre minimum lot size,with potential of up to five lots as small as two acres for lots of record September 1, <br /> UNIV-CA 2015 (University Lake)or October 19, 1999 (Cane Creek); AND <br /> CANE-CA 6% impervious surface limit. <br /> 1 2 <br /> 2-acre minimum lot size AND <br /> U-ENO-CA 6% impervious surface limit. [11, [21 <br /> 5-acre minimum lot size with potential of up to five lots as small as two acres for lots of record September 1, 2015 <br /> (University Lake)or October 19, 1999 Cane Creek ; AND <br /> 50% ISR for all fire stations and solid waste collection centers;AND <br /> UNIV-PW 12% ISR for all other non-residential uses,AND <br /> CANE-PW on-site infiltration of the first inch of stormwater runoff;AND <br /> a limit of 1.0%of the watershed for non-residential use (139 acres in CANE-PW). <br /> L JiLL 2-acre minimum lot size AND <br /> 50% ISR for all fire stations and solid waste collection centers;AND <br /> 12% ISR for all other non-residential uses; AND <br /> LITTLE-PW on-site infiltration of the first inch of stormwater runoff;AND <br /> a limit of 1.0%of the watershed for non-residential use (406 acres in LITTLE-PW). <br /> [11 i[21 Q.ADc n of be used to satisfy watershed i surf r n#c <br /> L JL1 70% <br /> ISR in Economic Development, Commercial and/or Commercial- Industrial Nodes as designated in the Land Use <br /> Element of the Comprehensive Plan (high-density option)with structural BMPs if ISR;:-exceeds 12%; AND <br /> 50% ISR for all fire stations and solid waste collection centers outside of Commercial and/or Commercial- <br /> Industrial Nodes as designated in the Land Use Element of the Comprehensive Plan,with structural BMPs if ISR <br /> U-ENO-PW >-exceeds 12%; AND <br /> BACK-PW 12% ISR for all other non-residential uses outside of Commercial and/or Commercial-Industrial Nodes as <br /> designated in the Land Use Element of the Comprehensive Plan (*n"AOc ,.aRRA-+ho „curl +r,satisfy watershe <br /> irfaGe or,+s4,AND <br /> on-site infiltration of the first inch of stormwater runoff;AND <br /> A limit of 1,151 acres of non-residential use throughout U-ENO-PW(5.0%)and 163 acres throughout BACK-PW <br /> (1%). [11• [21 <br /> 50% ISR for all fire stations and solid waste collection centers; AND <br /> 12% ISR for all other non-residential uses,AND <br /> HYCO-PW on-site infiltration of the first inch of stormwater runoff-,AND <br /> FLAT-PW limit of 1%of the watershed for non-residential use(37 acres in HYCO-PW, 66 acres in FLAT-PW). <br /> `�7 NAc n n+ho r11 L> QD used +r co+icfii watershed i irfono Feguirements. <br /> 70%impervious <br /> surface, with structural BMPs required when impervious surface exceeds: <br /> L-ENO-PW 24%(w/curb and gutter);or <br /> 36%(w/o curb and gutter). [11, [21 <br /> Orange County, North Carolina-Unified Development Ordinance Page 4-9 <br />