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15 <br /> B. EXCEPTIONS TO REPAIR AREA REQUIREMENTS <br /> In order for an improvements permit to be issued by Environmental Health, repair area <br /> adequate to install a replacement system in the event of failure of the initial system is <br /> generally required. If sufficient repair area is not available within the boundaries of the <br /> lot, then an easement may be needed to reserve a repair area on adjacent property. <br /> Section.1945 of"Laws and Rules for Sanitary Sewage Collection,Treatment,and Disposal <br /> 15 NCAC As Amended by the Orange County Board of Health (also referred to as "Rules <br /> of Sewage Disposal for Orange County") states the following: <br /> fl(c) The repair area requirement..... shall not apply to a lot or tract of land.• <br /> (1) which is specifically described in a document on file with the local health <br /> department on July 1, 1982, or which is specifically described in a <br /> recorded deed or recorded plat on January 1, 1983; and <br /> (2) which is of insufficient size to satisfy the repair requirement ... as <br /> determined by the local health department; and <br /> (3) on which a ground absorption sewage treatment and disposal system <br /> with a design daily flow of <br /> (A) no more than 480 gallons is to be installed, or <br /> (B) more than 480 gallons is to be installed if application for an <br /> improvements permit is receiued by the local health <br /> department on or before April 1, 1983. <br /> (d) Although a lot or tract of land is exempted under paragraph (c)from the repair <br /> area requirement ....., the maximum feasible area, as determined by the local <br /> health department, shall be allocated for repair area." <br /> C. STREAM CLASSIFICATION <br /> Planning The Orange County Zoning Ordinance requires that septic systems be located <br /> at least 300 feet from a reservoir, and at least 100 feet from a perennial or intermittent <br /> stream within a protected watershed. Perennial and intermittent streams are identified <br /> by a solid or dotted blue line on the USGS quadrangle maps. <br /> Environmental Health The Rules of Sewage Disposal for Orange County require a <br /> 100-foot setback for septic systems adjacent to classified reservoirs and adjacent to <br /> streams classified as WS-1, and a 50-foot setback adjacent to streams in which flow for at <br /> least 50% of the year. Whether or not a particular stream flows at least 50% of the year <br /> is determined on a case by case basis in the field. <br /> D. SETBACKS AND SEPARATIONS <br /> Septic systems must be located at least 15 feet from a structure. <br /> Wells are required to be at least 100 feet from any part of a septic system and 40 feet <br /> from property lines. <br />