April 3 2024 ORC Agenda Packet - Laserfiche WebLink

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16 Impervious Surface Requirements for Residential Uses TABLE 4.2.5.1: IMPERVIOUS SURFACE REQUIREMENTS(RESIDENTIAL) DISTRICT IMPERVIOUS SURFACE/DETENTION POND REQUIREMENTS 6% impervious surface limit. EXCEPT for all lots which existed prior to 4/2/90,which are subject to impervious surface limits as provided in the following Table (entitled Sliding Scale for Residential Impervious UNIV-CA Surface Ratios—Univ, Cane, and Little). [1], [2] UNIV-PW Lots shall either be a minimum of 2 acres in area, exclusive of any right-of-way or access easement, or created in accordance with established density regulations through the subdivision process to qualify for additional impervious surface allocation as detailed in Section 4.2.8 C . 6% impervious surface limit. EXCEPT for lots smaller than two acres which existed prior to 1/1/94,which are subject to impervious surface limits as provided in the following Table(entitled Sliding Scale for CANE-CA Residential Impervious Surface Ratios—Univ, Cane, and Little). [1], [2] CANE-PW Lots shall either be a minimum of 2 acres in area, exclusive of any right-of-way or access easement, or created in accordance with established density regulations through the subdivision process to qualify for additional impervious surface allocation as detailed in Section 4.2.8 C . 6% impervious surface limit. U-ENO-CA EXCEPT for lots smaller than five acres which existed prior to 6/1/2010,which are subject to impervious surface limits as provided in the following Table(entitled Sliding Scale for Residential Impervious Surface Ratios—Upper Eno). [11, 2 6% impervious surface limit. EXCEPT for lots which existed prior to 1/1/94,which are subject to impervious surface limits as provided in the following Table (entitled Sliding Scale for Residential 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-of-way or access easement, or created in accordance with established density regulations through the subdivision process to qualify for additional impervious surface allocation as detailed 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 U-ENO-PW Transition Areas as designated in the Orange County Land Use Plan. Stormwater BACK-PW Management Plans(SMPs)and/or 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 SCMs 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 51 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 Stormwater Management Plans(SMPs)and/or Stormwater Control Measures (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 Stormwater Management Plan (SMP)and/or Stormwater Control Measure(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.