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15 <br /> of water supply structures on recreational use of the lake. For these <br /> reasons , the Commission will consider a proposed intake development plan for a <br /> regional system more favorably than one that would serve only Orange County. <br /> From the standpoint of cost, a regional—based system would almost certainly be <br /> the more feasible approach for the County. <br /> This study does not address the selection of a specific raw water intake <br /> location at Jordan Lake. For preliminary cost estimating purposes , a <br /> potential intake location known as Bells Landing was selected. This site, <br /> shown in Exhibit 18, was evaluated in a previous report to OWASA by Hazen and <br /> Sawyer and was found to be the most feasible of the alternatives evaluated in <br /> that report. <br /> Transmission Main <br /> Exhibit 20 shows the southernmost section of a potential Jordan <br /> Lake—Orange County transmission main. To minimize right—of—way costs , the <br /> transmission main was assumed to be routed along the State highway <br /> right—of—ways. To the north, the transmission main would pass along US 15/501 <br /> and SR 1919 to Chapel Hill—Carrboro. From there, a new pipeline would <br /> parallel the existing 16—inch pipeline along Old NC 86 to Hillsborough. The <br /> estimated pipeline lengths are as follows: <br /> Length (ft. ) <br /> Intake to OWASA Water Treatment Plant 88,000 <br /> OWASA W.T.P. to Hillsborough W.T.P. 72,000 <br /> The 72,000 feet of piping between the OWASA water treatment plant and <br /> Hillsborough would be common to all of the alternatives considered in this <br /> report. Therefore, to maintain a consistent basis for the economic comparison <br /> of alternatives, the costs for this section of the pipeline, estimated to be <br /> $5,500,000 inclusive of operation and maintenance costs, have not been <br /> included in the project totals given in Table 6. 1 . <br /> 6-4 <br />