Orange County NC Website
1 vi <br />DISTRICT IMPERVIOUS SURFACE/DETENTION POND <br /> REQUIREMENTS <br /> (NON-RESIDENTIAL) <br />LITTLE-PW 2-acre minimum lot size <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 (403 <br /> acres in LITTLE-PW ). <br /> BMPs cannot be used to satis watershed re uirements. <br />U-ENO-PW 70%ISR in Commercial and/or Industrial Nodes as designated in <br />BACK-PW the Land Use Element of the Comprehensive Plan (high-density <br /> option) with structural BMPs if ISR > 12%; <br /> AND <br /> 50%ISR for all fire stations and solid waste collection centers <br /> outside of Commercial and\or Industrial Nodes as designated in <br /> the Land Use Element of the Comprehensive Plan, with structural <br /> BMPs if ISR > 12% ; <br /> AND <br /> 12%ISR for all other non-residential uses outside of Commercial <br /> and\or Industrial Nodes as designated in the Land Use Element of <br /> the Comprehensive Plan (BMPs cannot be used to satisfy <br /> watershed requirements); <br /> AND <br /> on-site infiltration of the first inch of stormwater runoff; <br /> AND <br /> a limit of 1,151 acres of non-residential use throughout U-ENO- <br /> PW (5.0%) and 163 acres throughout BACK-PW (1%). <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 />