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U-ENO-PW 70% <br />BACK-PW ISR in Commercial and/or Industrial Nodes as designated in the Land Use <br /> Element of the Comprehensive Plan (high-density option) with structural <br /> BMPs if ISR ~ 12%; <br /> AND <br /> 50% ISR for all fire stations and solid waste collection centers outside of <br /> Commercial and/or Industrial Nodes as designated in the Land Use Element <br /> of the Comprehensive Plan, with structural BMPs if ISR ~ 12%; <br /> AND <br /> 12% ISR for all other non-residential uses outside of Commercial and/or <br /> Industrial Nodes as designated in the Land Use Element of the <br /> Comprehensive Plan (* BMPs cannot be used to satisfy impervious surface <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 ofnon-residential use throughout U-ENO-PW (5.0%) <br /> 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 HYCO- <br /> PW, 66 acres in FLAT-PW). <br /> *BMPs cannot be used to satisfy watershed impervious surface requirements. <br />L-ENO-PW 70% impervious surface, with structural BMPs required when impervious <br /> surface exceeds: <br /> 24% (w/ curb and gutter); or <br /> 36% w/o curb and tter . <br />HAW-PW 24% impervious surface limit. <br />JORDAN-PW *BMPs cannot be used to satisfy watershed impervious surface requirements. <br />* BMP's as mandated by the Starmwater Management Program for Lauds within the Neuse River Basin are allowed. <br />3. Modifications of the Impervious Surface Ratio <br />Modifications of the Impervious Surface Ratios my be requested through one of the <br />following provisions: <br />a) Through variance procedures of the Board of Adjustment, as described in Article <br />6.23.1 lb. <br />b) Through approval and recordation of a conservation agreement, as provided in <br />Article 4 of Chapter 121 of the N.C. General Statutes, between Orange County <br />