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<br />7.A <br />Page 28 <br /> <br />o Double track cut and cover all under-ground <br />o Box with double track in tunnel <br />. Double covered trench <br /> <br />Group 3 - other combinations to study <br />. Note: there is a problem with the approach: integrate Caltrain with HSR. <br />Convert Caltrain to express trains. This is so trains could use each other's <br />tracks with one dispatch system <br />. Deep tunnel and trench combo <br />o Least disruptive <br />. Deep tunnel and at grade with grade separation, specifically for 4C <br />. Leave Caltrain as iSr go with grade separations as it is now <br />. Deep tunnel, leave Caltrain as is <br />. Deep tunnel but with Caltrain in covered trench or at grade with grade <br />separations as needed (road under preferred) <br />. HSR in tube/trench with Caltrain in trenchr stacked <br /> <br />Group 4 - other combinations to study <br />. Everything in tunnel except at Redwood Junction <br />. Aerial tracks with sound reflector and close privacy shield <br /> <br />Group 5 - other combinations to study <br />. Stacked track, cut and cover <br />. Buildings to span across right of way <br />. For option 3 as shown on matrix (open trench), cut and cover so only a <br />portion is open <br />. Park and bike boulevard over the top if covered <br />. Use some land for mixed use near station and housing between stations <br /> <br />Group 6 - other combinations to study <br />. Aerial for HSR, at-grade for Caltrain <br />. Aerial with a bubble/ baffle to reduce noise <br />. New route <br />o Along the Bay <br />. Why do we have to stick with present Caltrain route? <br />. Is it possible to have a one-track shoo-fly? <br />. What about 280 highway route? <br />. 2 tracks above, 2 tracks below (2 tracks aerial, 2 tracks at-grade) <br />. Right of way not with Caltrain right of way <br />. Covered aerial with translucent glass to keep sound/noise from reverberat:i:rig <br />through neighborhoods <br />. Hat Trench concept. Tunnel with hat-trench above. <br /> <br />4. Based on the options presented what would be your preferences? <br />. Green sticky dot: your preferred option <br />