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9 <br /> Gravity Sewer Boundary in Southern Orange County Triangle <br /> University Lake <br /> Watershed , <br /> Gravity Sewer Boundary <br /> WSMPBA Boundary 4? <br /> m <br /> i <br /> c <br /> 'iG�� <br /> J A N <br /> �j <br /> 4 0.5 1 <br /> Niles <br /> Legend <br /> Gravity Sewer Boundary WSMPBA Boundary Zoning City Limits PI <br /> Gravity Sewer Mains University Lake Watershed CH Transition EC5 RB <br /> Water Lines ETJ <br /> Streams <br /> As is discussed in the attached letter from OWASA, extending sewer lines to and within the southeast <br /> rural buffer triangle would require multiple pump stations,force mains, and other necessary <br /> infrastructure. Costs to do so would be significant, in the millions of dollars. <br /> The map above also depicts the WASMPBA"primary service area" boundary. Areas to the south of the <br /> boundary cannot be served by public water and sewer systems unless the boundary is modified. <br /> Modification to the boundary requires the approval of all five signatories to the Agreement (Orange <br /> County, OWASA, and the Towns of Chapel Hill, Carrboro, and Hillsborough). <br /> OWASA staff notes in the attached letter that the area in the map above between the red line (gravity <br /> sewer boundary) and the WASMPBA boundary (black line) may be serviceable by extension of gravity <br /> sewer lines. <br /> County Planning staff notes the existing incongruity of Chapel Hill ETJ and Transition Area outside of the <br /> WASMPBA boundary and how the sewershed seems to reflect why the Transition Area was incorporated <br /> into the JPA land use plan rather than designating it Rural Buffer. <br /> -8 - <br />