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roughly parallels the railroad. Minor improvements to this roadway will likely be required <br />as part of this project. <br />The pipeline conveying the supply to Evans Gulch would be approximately 8,200 feet <br />long and would consist of buried 12-inch-diameter HDPE pipe. The route of the pipeline <br />has been selected to follow an existing abandoned power line easement to minimize <br />disturbances. The pipeline would end at a connection to an existing District pipeline that <br />extends from Evans Gulch Reservoir to the treatment plant with this configuration, water <br />from the Canterbury Tunnel could be delivered either directly to the treatment plant or to <br />storage in Evans Gulch Reservoir. <br />Our opinion of the total budget required for Alternative No, 1 is $2,520,000. Details on <br />the estimated budget are provided in Appendix D. <br />Alternative No. 2— Canterbury Pump Station and Use of Existing Wet Well and <br />Pipeline <br />Alternative No. 2 is identical to Alternative No. 1 with respect to the installation of a <br />vertical bore, or well, into the tunnel at a location where the tunnel is believed to be <br />sound. A pump would be installed in the well to withdraw water from the tunnel, and the <br />housing, electrical supply, and access route for the pump station would be the same as <br />described for Alternative No. 1. <br />Alternative No. 2 differs from Alternative No. 1 in that the water supply would be <br />delivered via a pipeline to the historic portal for the Canterbury Tunnel. The District has <br />an existing wet well at this location where the supply was historically captured by the <br />District and delivered to its distribution system. The pipeline would be approximately <br />1,800 feet long and would consist of buried 12-inch-diameter HDPE pipe, as shown on <br />Figure No. 2. Construction of the pipeline would involve navigation of difficult <br />mountainous terrain. <br />A Microfloc Trident packaged treatment plant is proposed at a location near the wet <br />well. The treatment facility would improve the reliability of the supply in the event that <br />turbidity or other chemical contaminants become a problem in the future. The facility <br />_/ W. IIJ. Wh�eler and Auociotas, Ine 5/19/2010 Final <br />— 1 Wotsr Rssour<as En9inears Page 16 <br />