Agenda - 08-26-1991 - Laserfiche WebLink

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3. WS - -IV. 31 WS -IV classification is appropriate for watershed that are moderately to highly developed. Within a one mile Critical Area, new domestic wastewater discharges would be permitted, but new industrial discharges would not. Permitted density would be one dwelling unit per acre or 12 percent built -upon surfaces. Under a high density option, built -upon areas could be as high as 30 percent, provided that runoff from one inch of stormwater is controlled. The rules would apply no additional restrictions to non - residential development. No new landfills or sludge application sites would be permitted. Outside of the Critical Area, the new rules would establish a Protected Area. It would extend five miles from the normal pool of the reservoir or to the ridgeline, whichever is the shortest distance, or for "run -of - river" water sources, 10 miles upstream of and draining to the river intake. In the Protected Area, domestic and industrial discharges would be permitted. Density would be limited to two dwelling units per acre or 24 percent built - upon areas. Under a high density option, built -upon areas could go to 70 percent if development controlled the runoff form one inch of stormwater. Non - residential development, landfills and sludge application sites would be permitted. Also included here are Tables 1, 2 and 3 which compare the proposed State rules to the City and County ordinances currently in effect for watershed protection. With a few minor changes, the City and County ordinances as they apply to the watersheds of Lake Michie and Little River would meet or exceed the proposed State rules. As shown in these Tables, the proposed rules for protection of the Falls and Jordan Reservoirs are similar to the City and County. ordinances, except that the State rules allow greater- density in the Critical Area and propose a Protected Area of five miles from the normal pool elevation for the entire reservoir. In contrast, the City and County ordinances apply different levels of protection depending on the classification of waters as originally applied by the EMC in 1983. These differences are described in more detail below. B. Proposed Water Supply Classifications. In May 1991, the EMC proposed classifications for each of the water supply rivers and "reservoirs in the State as part of its process to satisfy the second of its statutory deadlines. The proposed classifications affecting Durham County are as follows: ■ Falls of the Neuse Reservoir (excluding Lake Michie and Little River tributaries): from multiple classifications (WS -III, B and C) to WS IV. ■ Jordan Reservoir: from multiple classifications of WS-M, B and C to WS -IV. ■ Lake Michie Reservoir watershed: from WS -III to WS -II. Little River Reservoir: from WS -III to WS-H. ■ Eno River (upstream from the emergency water intake): from multiple classifications of WS -Ili and C to WS IV. 3