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7 <br />Upper Neuse Watershed Management Plan Appendix A <br />Development regulation changes required to meet non-degradation target: <br />Habitat Requirement <br />Enhanced peak flow management for any new developments >10 percent imperviousness <br />Options for Managing Water Quay <br />1. 1 unit per 5 acres and 5 percent impervious surface area maximum (for all County jurisdictions) <br />or <br />2. Performance standards for all new developments: maximum nitrogen and phosphorus surface <br />loading of 1.7 Ibs/ac/yr and 0.3 Ibs/ac/yr, respectively, or <br />3. Durham builds upland lake and Orange County regulations are unchanged. <br />See Chapter 4 for other recommended actions related to monitoring and enforcement, <br />education, point source controls, and stream/wetland restoration. <br />UNRBA May 2003 A-9 <br />