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Orange County Zoning Ordinance <br /> 6.23.3 STORMWATER INFILTRATION AND DETENTION <br /> 2. Non-Residential Development <br /> Amended 1/4194; 10/19199 <br /> DISTRICT IMPERVIOUS SURFACE/DETENTION POND REQUIREMENTS <br /> (NON-RESIDENTIAL) <br /> UNIV-CA Same as.Residential (See previous Table) <br /> UNIV-PW <br /> CANE-CA 5-acre minimum lot size, with potential of up to five lots as small as <br /> two acres for lots of record October 19, 1999 (Amended 10-19-99); <br /> AND <br /> 6% impervious surface limit. <br /> BMPs cannot be used to satisfy watershed requirements. <br /> CANE-PW 5-acre minimum lot size, with potential of up to five lots as small as <br /> two acres for lots of record October 19, 1999 (Amended 10-19-99); <br /> AND <br /> 50% ISR for all fire stations and solid waste collection centers; <br /> AND <br /> 12% ISR for all other non-residential uses; <br /> AND <br /> on-site infiltration of the first inch of stormwater runoff; <br /> AND <br /> a limit of 1.0% of the watershed for non-residential use (139 acres in <br /> CANE-PW). <br /> BMPs cannot be used to satisfy watershed requirements. <br /> U-ENO-CA 2-acre minimum lot size <br /> AND <br /> 6% impervious surface limit <br /> BMPs cannot be used to satisfy watershed requirements. <br /> HYCO-PW 50% ISR for all fire stations and solid waste collection centers; <br /> FLAT-PW AND <br /> 12% ISR for all other non-residential uses; <br /> AND <br /> on-site infiltration of the first inch of stormwater runoff; <br /> AND <br /> a limit of 1% of the watershed for non-residential use (37 acres in <br /> HYCO-PW, 66 acres in FLAT-PW). <br /> BMPs cannot be used to satisfy watershed requirements. <br /> HAW PW 24% impervious surface limit. <br /> JORDAN-PW BMPs cannot be used to satisfy watershed requirements. <br />