Agenda - 03-18-1997 - 9c - Laserfiche WebLink

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4 The Hancor force main is a component of a sewer system serving the Hancor manufacturing facility which is located on the south side of US Hwy 70, approximately one mile west of Efland. The sewer system consists of a pumping station that lies near the northeast corner of the Hancor building (approximately 750 feet south of US 70), 800 feet of two inch force main lying between the pump station and the north side of US 70 and approximately 5600 linear feet of two inch force main lying along the north side of US 70 between Hancor and the western-most point of the gravity collection part of the Efland sewer system. Boone mobile home park lies approximately 1000 feet west of the northwestern-most point on the Hancor force main. Mr. McBroom has proposed provide sewer service to the mobile home park by means of constructing a sewer pumping station and a gravity sewer collection system discharging to that pumping station on park property. The mobile home park's waste water would be pumped from the pumping station via a two inch force main lying along the north side of US 70 to the point where it would tie into the Hancor force main. In accordance with NCDOT utility requirements and similar to the County's agreement with NCDOT and Hancor, the County be required to accept ownership of the portion of the Boone force main lying within the NCDOT right-of-way. County staff advised Mr. McBroom that Orange County considers force main taps to be undesirable from both a technical and public policy standpoint and, as such, are not generally permitted under County sewer policies. Mr. McBroom was aware that the BOCC had recently made an exception to its no force main tap policy to address the wastewater disposal problems at Ben Lloyd's car wash in central Efland. He indicated that he would appeal to the BOCC for an exception to the County's no force main tap policy for Boone mobile home park. At the February 18''meeting of the BOCC, Mr. McBroom did in fact formally request that the BOCC allow him to obtain sewer service by tapping the Hancor force main. The BOCC responded by directing County staff to evaluate the request based on the County's sewer policies, the circumstances at Boone mobile home park and the technical merit of the request. Accordingly, the County Attorney researched the history of Boone mobile home park. He has provided an opinion stating that the County's current zoning ordinances do not permit the replacement of mobile homes in non-conforming(from a density standpoint) mobile home parks if. a)those spaces have not been occupied for more than 180 consecutive days in a two year period; and b)the reoccupation of the vacant spaces would lead to a continuing nonconformity. The County Attorney's investigation has led him to the conclusion that the circumstances at Boone mobile home park are such that, under the existing zoning regulations, the park's ten currently unoccupied spaces may not be reoccupied, regardless of the outcome of the BOCC's decision as to the provision of public sewer service. Many of the technical aspects of the proposed Hancor sewer tap are similar to those reviewed by the BOCC in its recent consideration of the Ben Lloyd sewer tap request. The proposed Hancor tap requires a reconfiguration of the existing force main piping at the point just after the point where it passes under US 70 near the northeast comer of the Hancor property. The existing ninety degree bend(where the force main turns eastward toward Efland)would be replaced with a"Y" or a"T" fitting. This modification would provide for one leg of the"Y" or"T" to be oriented toward Hancor, one leg to be oriented toward Boone mobile home park and one leg toward the Efland sewer system. Check(backflow prevention) and shut-off valves would be installed on the legs oriented toward Hancor and the mobile home park. This type of connection would not require the drilling of a tap hole into an existing larger diameter force main pipe as will be the case at the Lloyd tap. As with the Lloyd tap, the fittings and valves on both the Hancor and Boone legs of the modified force main system would be operating in a corrosive environment under