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Article 4: Overlay Zoning Districts
<br /> Section 4.2: Watershed Protection
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<br />Orange County, North Carolina – Unified Development Ordinance Page 4-7
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<br />TABLE 4.2.5.1: IMPERVIOUS SURFACE/DETENTION POND REQUIREMENTS (RESIDENTIAL)
<br />DISTRICT IMPERVIOUS SURFACE/DETENTION POND REQUIREMENTS (RESIDENTIAL)
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<br />[2] A stormwater feature/best management practice (BMP) shall be required in accordance with applicable local and
<br />State standards based on proposed land disturbance. 3
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<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.
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<br />TABLES 4.2.5.2 & 4.2.5.3: SLIDING SCALE FOR RESIDENTIAL IMPERVIOUS SURFACE RATIOS –
<br />UNIV, CANE, LITTLE, AND UPPER ENO
<br />LOT SIZE (ACRES) ISR SQUARE FEET LOT SIZE (ACRES) ISR SQUARE FEET
<br />Cells in black DO NOT apply to the Upper Eno
<br />6+ 5.0 3.1 9.8 13,234
<br />6.0 5.0 13,068 3.0 10.0 13,068
<br />5.9 5.1 13,107 2.9 10.2 12,885
<br />5.8 5.2 13,138 2.8 10.4 12,685
<br />5.7 5.3 13,159 2.7 10.6 12,467
<br />5.6 5.4 13,172 2.6 10.8 12,232
<br />5.5 5.5 13,177 2.5 11.0 11,979
<br />5.4 5.6 13,172 2.4 11.2 11,709
<br />5.3 5.7 13,159 2.3 11.4 11,421
<br />5.2. 5.8 13,138 2.2 11.6 11,116
<br />5.1 5.9 13,107 2.1 11.8 10,794
<br />5.0 6.0 13,068 2.0 12.0 10,454
<br />4.9 6.2 13,234 1.9 12.2 10,097
<br />4.8 6.4 13,381 1.8 12.4 9,723
<br />4.7 6.6 13,512 1.7 12.6 9,331
<br />4.6 6.8 13,625 1.6 12.8 8,921
<br />4.5 7.0 13,721 1.5 13.0 8,494
<br />4.4 7.2 13,880 1.4 13.2 8,050
<br />4.3 7.4 13,861 1.3 13.4 7,588
<br />4.2 7.6 13,904 1.2 13.6 7,109
<br />4.1 7.8 13,930 1.1 13.8 6,612
<br />4.0 8.0 13,939 1.0 14.0 6,098
<br />3.9 8.2 13,930 0.9 14.2 5,567
<br />3.8 8.4 13,904 0.8 14.4 5,018
<br />3.7 8.6 13,861 0.7 14.6 4,452
<br />3.6 8.8 13,800 0.6 14.8 3,868
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<br />3 Requiring a BMP is based on the proposed land disturbance of a project not on how much impervious surface are
<br />is proposed for a parcel of property. This land disturbance thresholds varies for each district consistent with State
<br />requirements. We are adding language to the UDO clarifying when a BMP is required.
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