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<br />I.. "", '._ <br /> <br />Chapter 2 - Define Water Supply & Water Quality Needs <br /> <br />The resort includes an 18-hole golf course on 100 acres which has a separate <br />irrigation system with water pumped out of Lake Grant. Natural springs are a <br />source of water for Lake Grant. Plans are to use the lake in the District's <br />augmentation plan. <br /> <br />East River Regional Sanitation District <br /> <br />Sewage Treatment <br /> <br />Located southeast of the Avion development, adjacent to the East River, the East <br />River Regional Sanitation District wastewater treatment plant uses a facultative <br />aerated lagoon process, designed to achieve secondary treatment. Wastewater <br />from gravity collection systems in Skyland Resort, Riverbend end Avion is <br />conveyed to the plant via a sewage pump station located adjacent to the Slate <br />River. The plant consists of two aeration cells and a polishing pond with the two <br />aeration cells having a net treatment volume of 3.34 MG. Maximum treatment <br />capacity is approximately 0.143 MGO, while current average peak monthly flows <br />are 0.036 MGD. The plant is operated so it discharges into the East River only <br />intermittently, which is accomplished by lowering the effluent weir. <br /> <br />A major advantage of aerated lagoons is that variable daily flows can be handled <br />due to long detention times. This flow equalization is important in a resort area. <br /> <br />The facility has no bar rack and most of the wastewater enters the plant in short <br />term surges. The combination of floating surface aerators and a diffused aeration <br />system is currently adequate. But, aeration is the most critical unit process <br />affecting capacity. For long range planning, a larger diffused air system covering <br />the entire pond may be necessary. This facility should handle ammonia removal <br />unless future growth is excessive. The facility discharges to the East River and <br />uses chlorination and dechlorination. Additional customers can easily be added to <br />this facility, which would allow the facility, as designed, to function more <br />efficiently. <br /> <br />RTW has projected average peak monthly flows of 0.169 MGO by the year 2013 <br />and 0.196 MGO by 2033, indicating a need for upgrading the plant. <br /> <br />60 <br /> <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />'I <br />I <br />I <br />I <br />I <br />