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Article 4: Overlay Zoning Distri24 Section 4.2: Watershed Protection 4.2.5 Impervious Surface and Detention Pond Requirements for Residential Uses k"' h�TABLE 4.2.5.1: IMPERVIOUS SURFACE/DETENTION POND REQUIREMENTS(RESIDENTIAL) . REQUIREMENTS 6% impervious surface limit. EXCEPT for all lots which existed prior to 4/2/90,which are subject to' pervious surface its as provided in the following Table(entitled Sliding Scale for idential Impervious UNIV-CA S Ice Ratios—Univ, Cane, and Little). [1], [2] UNIV-PW Lots s II either be a minimum of 2 acres in area, exclusive any right-of-way or access easemen or created in accordance with established de ty regulations through the subdivision cess to qualify for additional impervio surface allocation as detailed in Section 4.2.8 6% impervious su a limit. EXCEPT for lots smal >than acres w ' existed prior to 1/1/94,which are subject to impervious surface limitded i e following Table(entitled Sliding Scale for CANE-CA Residential Impervious at' —Univ, Cane, and Little). [1], [2] CANE-PW Lots shall either be a m acres in area, exclusive of any right-of-way or access easement, or created ince ith established density regulations through the subdivision process to qadditi al impervious surface allocation as detailed in Section 4.2.8 C . 6% impervious su ce limit. U-ENO-CA EXCEPT for to smaller than five acres which ex ed prior to 6/1/2010,which are subject to impervious rface limits as provided in the followin able(entitled Sliding Scale for Reside ' I Impervious Surface Ratios—Upper Eno). [ 2] 6% i ervious surface limit. EPT for lots which existed prior to 1/1/94, which are subje to impervious surface limits as provided in the following Table (entitled Sliding Scale for Resi tial Impervious Surface LITTLE-PW Ratios- Univ, Cane, and Little). [1], [2] Lots shall either be a minimum of 2 acres in area, exclusive of any right- way or access easement, or created in accordance with established density regulations thr h the subdivision process to qualify for additional impervious surface allocation as de 'led in Section 4.2.8 (C). FLAT-PW 12% impervious surface limit for new and existing lots. [1], [2] HYCO-PW 12% impervious surface limit for existing and new lots outside of Transition Areas as designated in the Orange County Land Use Plan. [1], [2] 30% impervious surface limit for developments which exceed a density 1 du/acre within Transition Areas as designated in the Orange County Land Use Plan. Str r ,rAI BMPs B ACK-PW ENO-PW Stormwater control measures (SCMs)are required if impervious surface exceeds 12%. 70% impervious surface limit for residential uses developed at"high intensity"densities(R- 5, R-8, and R-13)in an Economic Development District as designated in the Land Use Element of the Comprehensive Plan (high-density option)with stri p-t-1ral Rn4PSSCMs if ISR exceeds12%. 24% impervious surface limit with curb and gutter. 36% impervious surface limit without curb and gutter. [1], [2] 70% impervious surface limit for residential uses developed at"high intensity'densities(R- L-ENO-PW 5, R-8, and R-13)in an Economic Development District as designated in the Land Use Element of the Comprehensive Plan (high-density option),with -s+r,IrUtur-al Rnno&SCMs required when impervious surface exceeds: 24% (w/curb and gutter); or 36% w/o curb and gutter). HAW-PW 24% impervious surface limit. [1], [2] JORDAN-PW [1]Allowable impervious surface area may be modified in accordance with Section 4.2.8 of the UDO. [2] Regardless of the proposed amount of impervious surface area, a s;+ r,,,., for foofi 1ro/hoof,,,",.AgerneRt.,FaGtiGe SCM may still be required based on the proposed amount of land disturbance on a given parcel of property in accordance with applicable Orange County Erosion Control and State Stormwater regulations. Orange County, North Carolina—Unified Development Ordinance Page 4-6