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2 <br /> WASMPBA Amendment: • Development <br /> Regulations <br /> Orange County Chapel Hill <br /> University Lake: 1 DU/5 acres <br /> Max. Density Jordan Lake: 1 DU/acre 1 DU/acre (RLD-1 zoning). <br /> Small portion zoned Neighborhood <br /> (Residential) Does not include 25-50%Affordable <br /> Housing Density Bonus per UDO 6.18.3 Commercial(NC)near Starpointe. <br /> Zoning Districts <br /> Min. Lot Size Rural Buffer: 1-2 Acres <br /> (Residential) Rural Residential &Agricultural 1 acre (43,560 sq.ft.) <br /> Residential: 10-40,000 sq.ft. <br /> Max. Impervious University Lake: 6%,9%with SCMs Low Density option w/C&G: 2 DU/acre <br /> (Residential) Jordan Lake: 24% Low Density option w/No C&G: 3 DU/acre <br /> High density option w/SCMs: 50%of site <br /> University Lake: 12%, 50%for Fire <br /> Multifamily/Commercial <br /> Max. Impervious Stations and Solid Waste Facilities Low Density option w/C&G: 24%of site <br /> (Non-residential) Jordan Lake: 24%with SCMs Low Density option w/No C&G: 36% <br /> High density option w/SCMs : 70% <br /> Stormwater Threshold University Lake: 1/2 acre <br /> Jordan Lake: 1 acre for Multi-family All new and redevelopment <br /> (Non-residential) and Recreational uses <br /> Erosion Control <br /> Threshold University Lake: 10,000 sq.ft. University Lake: 10,000 sq.ft. <br /> (Residential and Non- Jordan Lake: 20,000 sq.ft. Jordan Lake: 20,000 sq.ft. <br /> residential) <br /> DU= "Dwelling Unit" <br /> SCM=Stormwater Control Measure (aka Best Management Practice(BMP)) <br /> C&G=Curb and Gutter <br /> The differences between the jurisdictions reflect, in part, the Town's status as a federally-regulated <br /> stormwater community in the US Environmental Protection Agency's National Pollutant Discharge <br /> Elimination System's Municipal Separate Storm Sewer System (MS4) program. This requires effective <br /> treatment of stormwater runoff that allows for more intensive development, as would be typical for a <br /> municipality served by urban services. It also reflects expected policy differences between the <br /> incorporated, densely-populated Town and the largely-rural Orange County, which does not offer urban <br /> services, namely water and sewer utility service. With properties generally being smaller and structures <br /> built closer together, the Town allows for larger relative development footprints (impervious surfaces) <br /> than the County, especially for multifamily and non-residential developments. The County, on the other <br /> hand, allows for single- and two-family residential development by-right without stormwater treatment, <br /> while the Town requires all new development to have stormwater treatment. Under State laws, <br /> overtreatment of stormwater to redress impacts from past unregulated development is not permitted, <br /> but it can be incentivized and encouraged, particularly through a conditional zoning process. <br /> 2 <br />