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High Speed Rail over Pacheco -With high speed rail over Pacheco, there would be no <br />High Speed Rail through the Altamont and the Regional Rail Plan would use the <br />recommendations already outlined. This alignment does not create impact to <br />Pleasanton. <br />High Speed Rail over Altamont and Pacheco -This alternative would operate <br />predominantly upgraded regional service through the Altamont and predominantly <br />Southern California express trains through Pacheco. Accordingly, only 2 tracks would <br />be required, including at stations. This option also allows for deferring high cost and <br />environmentally challenging segments of the Altamont such as provision of a two-track <br />high bridge across Dumbarton and a tunnel under Niles Canyon (in the event <br />passenger-only tracks are developed along the SPRR right-of--way). Staff has the same <br />concerns with this high speed alignment as noted under the High Speed Rail over <br />Altamont section above. <br />Submitted by: <br />~~~ <br />Rob Wilson <br />Public Works Director <br />Attachments: <br />1. Tri-Valley Policy Advisory Committee Letter <br />Approved by: <br />Nelson Fialho <br />City Manager <br />Page5of5 <br />