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• � <br /> 9. Operation and maintenance of the system, including pressure mains, includes <br /> periodic cleaning, repairing of leaks, and major replacement of pipe <br /> sections. The proper long-term operation and maintenance of the proposed <br /> system must be assured. OWASA recommends that periodic inspections be <br /> conducted by the Division of Environmental Management and/or the Division of <br /> Health Services during ongoing operation of the system. Such inspections <br /> should include an evaluation of all components of the system, including <br /> gravity collection lines, pumps, tanks, and distribution piping. <br /> 10. Assuming that the system is ultimately installed as approved, assurance <br /> should be required that the operating organization is well-qualified with a <br /> sufficient history of satisfactory experience. It is our understanding that <br /> at this time, Tarheel Utility Management, Inc., referenced in <br /> correspondence, has not been granted operating authority by the State Public <br /> Utilities Commission. <br /> Comments on Development Layout: <br /> 1. O ASA is not opposed to development activities within the University Lake <br /> watershed, provided that such development does not impair University Lake <br /> water quality. Development activities -in-the-watershed should _consistent <br /> with the primary public objective of protection of the public drinking water <br /> supply. From the standpoint of water quality protection, development within <br /> the Amberly Subdivision land tract should be located farther away from <br /> watercourses and on the least environmentally sensitive areas of the tract. <br /> 2. The subdivision plan is based upon the preliminary design for wastewater <br /> disposal. A detailed investigation of site suitability and consideration of <br /> the need for dual absorption fields may result in the need for greater <br /> absorption field area, which in turn could require significant modifications <br /> to the proposed subdivision layout and development density. <br /> 3. Full assurance must be provided that those areas identified as conservation <br /> and open space areas will remain as such and not be further developed. <br /> 4. The project must be closely monitored to assure that effective sedimentation <br /> and erosion control measures are in place during and after project <br /> construction. Assurance must be provided that such measures will be <br /> permanently maintained. <br /> 5. Until the comprehensive watershed study is completed, OWASi, staff recommends <br /> that property within the watershed not be rezoned to permit higher <br /> development densities than presently allowed. <br /> -5- <br />