Orange County NC Website
Article 4: Overlay Zoning Districts 22 <br /> Section 4.2:Watershed Protection <br /> IMPERVIOUSTABLE 4.2.6: • POND REQUIREMENTS <br /> DISTRICT IMPERVIOUS SURFACEMETENTION POND REQUIREMENTS <br /> UNIV-CA 5-acre minimum lot size, with potential of up to five lots as small as two acres for lots of record September 1, <br /> CANE-CA 2015(University Lake)or October 19, 1999 (Cane Creek); AND <br /> 6% impervious surface limit. [11, 121 <br /> U-ENO-CA 2-acre minimum lot size AND <br /> 6% impervious surface limit. [1], [2] <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 /> 2015(University Lake)or October 19, 1999 (Cane Creek); AND <br /> UNIV-PW 50% ISR for all fire stations and solid waste collection centers;AND <br /> CANE-PW 12% ISR for all other non-residential uses;AND <br /> 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). [1], [2] <br /> 2-acre minimum lot size AND <br /> 50% ISR for all fire stations and solid waste collection centers;AND <br /> LITTLE-PW 12% ISR for all other non-residential uses; AND <br /> 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 . [11, 2 <br /> 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 str, Gt ral BMP stormwater control measures <br /> SCMs if ISR exceeds 12%; AND <br /> 50% ISR for all fire stations and solid waste collection centers outside of Commercial and/or Commercial- <br /> U-ENO-PW Industrial Nodes as designated in the Land Use Element of the Comprehensive Plan, with stru.turaal nnAPSSCMs <br /> BACK-PW if ISR exceeds 12%; AND <br /> 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; 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 <br /> throughout BACK-PW 1% . [1], [2] <br /> 50% ISR for all fire stations and solid waste collection centers; AND <br /> HYCO-PW 12% ISR for all other non-residential uses;AND <br /> FLAT-PW on-site infiltration of the first inch of stormwater runoff;AND <br /> limit of 1%of the watershed for non-residential use 37 acres in HYCO-PW, 66 acres in FLAT-PW . [1], 2 <br /> 70% impervious surface, with structural BMP-s SCMs required when impervious surface exceeds: <br /> L-ENO-PW 24% (w/curb and gutter); or <br /> 36% w/o curb and gutter). [1], [2] <br /> HAW-PW 24% impervious surface limit. [1], [2] <br /> JORDAN-PW <br /> [1]Allowable impervious surface area may be modified in accordance with Section 4.2.8 of the LIDO. <br /> [2] For non-residential developments a stormwater feature/best management practice (BMP)SCM shall be required in accordance <br /> with <br /> applicable local and State standards based on proposed land disturbance and/or a project exceeding impervious surface <br /> thresholds as identified herein. <br /> NOTE: Non-residential use impervious acreage limits in watershed with such limits are calculated using the actual amount of <br /> impervious surface for non-residential uses throughout the watershed, not by the overall number of acres of non-residential <br /> parcels located in a particular watershed. <br /> (A) Hillsborough Economic Development District <br /> (1) The Hillsborough Economic Development District is located within the Lower Eno <br /> - Unprotected watershed. Within the Hillsborough Economic Development <br /> District, as designated in the Land Use Element of the Comprehensive Plan, the <br /> maximum impervious surface ratio is 50% with detention ponds. <br /> Orange County, North Carolina—Unified Development Ordinance Page 4-8 <br />