Agenda - 05-26-2015 - C-4 - Laserfiche WebLink

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Article 4: Overlay Zoning Districts29 Section 4.2: Watershed Protection 4.2.5 Impervious Surface and Detention Pond Requirements for Residential Uses 1 Staff is editing existing notes throughout the Section to address existing typographical and reference errors. In the existing text an asterisk (' *') in certain cases was used to denote information while in other cases it was not. There was also a [1] used to identify certain watersheds requiring a BMP in the Neuse River Basin. Unfortunately the watershed overlay districts identified are not in the Neuse River Basin. The proposed amendments address these issues and clarify the essential information. z Staff is suggesting language mandating a 2 acre minimum lot size in order for a parcel within identified watershed overlay districts to request a modification of impervious surface area through the installation of a stormwater feature. The rationale for the suggestion is that State regulations currently allow governing bodies to require either a 1 acre minimum lot size, limited to a 6% impervious surface threshold, or a 2 acre minimum lot size limited to a 12% impervious surface threshold. In these identified watershed overlay districts the County made a conscious decision to follow the more restrictive option. We are recommending the condition to ensure those properties subject to a modification request meet minimum State standards with respect to required lot size. Please refer to Attachment 2 for additional information on State requirements associated with the establishment and enforcement of impervious surface thresholds. Orange County, North Carolina — Unified Development Ordinance Page 4 -6 TABLE 4.2.5.1: IMPERVIOUS SURFACE/DETENTION POND 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]_-[21 nm Q ^o , .,,,+ ho used. +„ satisfy watershed rfo UNIV -PW Feq6IiFeMeRtS. Parcels shall be a minimum of 2 acres in area, exclusive of any right -of -way or access easement, to qualify for additional impervious surface allocation as detailed in Section 4.2.8 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). [11• [21 CANE -PW Parcels shall be a minimum of 2 acres in area, exclusive of any right -of -way or access easement, to qualify for additional impervious surface allocation as detailed in Section 4.2.8 6% impervious surface limit. EXCEPT for lots smaller than five acres which existed prior to 6/1/2010, which are subject to U- ENO -CA impervious surface limits as provided in the following Table (entitled Sliding Scale for Residential Impervious Surface Ratios — Upper Eno). [11• [21 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 Ratios - Univ, Cane, and Little). [11. [21 LITTLE -PW Parcels shall be a minimum of 2 acres in area, exclusive of any right -of -way or access easement, 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. [11, [21 * ❑MPs n l.+ he i sed b. satisfy watershed impewiGus irfaSO r n +S HYCO -PW 12% impervious surface limit for existing and new lots outside of Transition Areas as U- ENO -PW designated in the Orange County Land Use Plan. [11• [21 BACK -PW BI ADS n be to impei'ViGUS r n +S [1] et used satisfy ate Fshed u FfaGe 30% impervious surface limit for developments which exceed a density 1 du /acre within 1 Staff is editing existing notes throughout the Section to address existing typographical and reference errors. In the existing text an asterisk (' *') in certain cases was used to denote information while in other cases it was not. There was also a [1] used to identify certain watersheds requiring a BMP in the Neuse River Basin. Unfortunately the watershed overlay districts identified are not in the Neuse River Basin. The proposed amendments address these issues and clarify the essential information. z Staff is suggesting language mandating a 2 acre minimum lot size in order for a parcel within identified watershed overlay districts to request a modification of impervious surface area through the installation of a stormwater feature. The rationale for the suggestion is that State regulations currently allow governing bodies to require either a 1 acre minimum lot size, limited to a 6% impervious surface threshold, or a 2 acre minimum lot size limited to a 12% impervious surface threshold. In these identified watershed overlay districts the County made a conscious decision to follow the more restrictive option. We are recommending the condition to ensure those properties subject to a modification request meet minimum State standards with respect to required lot size. Please refer to Attachment 2 for additional information on State requirements associated with the establishment and enforcement of impervious surface thresholds. Orange County, North Carolina — Unified Development Ordinance Page 4 -6