Orange County NC Website
Browse       Search
1 2 <br /> DISTRICT IMPERVIOUS SURFACE/DETENTION POND <br /> REQUIREMENTS <br /> (RESIDENTIAL) <br /> HAW-PW 24% impervious surface limit, BMPs not required. <br /> JORDAN-PW <br /> For new subdivisions, the total amount of allowable imperious surface shall be calculated as the <br /> applicable percentage of the entire tract. This impervious surface allotment shall be distributed <br /> equitably among the lots of the subdivision. The allotment for each lot shall be indicated on a <br /> separate document recorded together with the final subdivision plat <br /> 2. Non-Residential Development <br /> DISTRICT IMPERVIOUS SURFACE/DETENTION POND <br /> REQUIREMENTS <br /> (NON-RESIDENTIAL) <br /> UNIV-CA Same as Residential (See previous Table) <br /> UNIV-PW <br /> CANE-CA Up to 6% impervious surface without BMPs, <br /> U-ENO-CA 6% - 24% with BMPs. <br /> CANE-PW Up to 70% impervious surface without BMPs'. <br /> LITTLE-PW <br /> HYCO-PW <br /> BACK-PW <br /> FLAT-PW <br /> U-ENO-PW Up to 70% impervious surface, with BMPs required <br /> when impervious surface exceeds 12%.' <br /> L-ENO-PW Up to 50% impervious surface, with BMPs required <br /> HAW-PW when impervious surface exceeds 24% (if curb and <br /> JORDAN-PW gutter is used) or 36% (no curb and gutter). <br /> After new non-residential development with impervious surface greater than 12% occurs on 5% <br /> of the watershed, impervious surface for subsequent development may not exceed 30%, and <br /> BMPs will be required when impervious surface exceeds 12%. <br /> 6 <br />