Orange County NC Website
Browse       Search
manhole into the sewer system. The pump and haul process 5 <br /> requires permitting by DEM. As pump and haul is a permitted <br /> treatment process, its implementation will bring the Northern <br /> facility into full compliance with DEM regulations. DEM permits <br /> pump and haul for limited time periods and, in all cases, <br /> considers it a temporary solution meant to serve until a <br /> permanent solution can be implemented. In terms of the Northern <br /> facility, the permanent solution will be a non-discharge <br /> treatment system which relies on ground absorption waste <br /> treatment technology. County staff estimates that the pump and <br /> haul process will continue for a period of not less than two nor <br /> more than ten months, depending on the factors of weather and the <br /> strategy that the BOCC adopts to address the situation. In the <br /> event that the BOCC choses to provide a ground absorption <br /> treatment system at Northern, the pump and haul process can be <br /> limited to approximately six months. The cost of the pump and <br /> haul operation is estimated to range from $2000 to $2500 per <br /> month. <br /> The effort to develop a design and accurate cost estimation for <br /> construction of a non-discharge treatment system for the Northern <br /> facility is already well under way. County Environmental Health <br /> staff have completed a thorough soils investigation at the <br /> facility. Staff have located only one area suitable for <br /> installation of a large nitrification field. The nitrification <br /> field site, which is capable of accommodating 3000 gallons per <br /> day (gpd) of septic tank effluent with a one hundred percent <br /> repair area, is located in the field on the eastern side of the <br /> main building. This field currently serves as the front lawn of <br /> the Northern facility. Environmental Health staff have also <br /> developed a preliminary design for a non-discharging system and <br /> other associated modifications to the Northern facility. The <br /> preliminary design process has determined that modification of <br /> the existing septic tank and sand filter is not economically <br /> feasible. The existing tank and filter are more than forty years <br /> old and in very poor condition. Rehabilitation of these units <br /> would be more expensive than replacement. It would also require <br /> that the facility operate without proper sanitary service during <br /> the weeks required for rehabilitation. Staff recommend that the <br /> existing septic tank and sand filter be demolished and filled in <br /> with soil. <br /> The recommended new system is a pump conventional septic system <br /> consisting of one 3500 gallon septic tank, one 3500 gallon pump <br /> tank, two effluent pumps with level controls, alarms, etc. , two <br /> 1000 gallon septic tanks to operate as a grease trap for the <br /> kitchen facility, 3300 liner feet of nitrification line with a <br /> dual header system, and miscellaneous yard piping. The existing <br /> system of yard piping, plumbing and grease trap will require some <br /> modification or replacement to provide for a new system layout, <br /> limitation of ground and surface water infiltration and grease f <br /> removal. One unfortunate expense which will be generated by the <br /> proposed system layout is that incurred by the relocation of the <br /> existing well As the new nitrification field will be located <br />