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<br />7.A <br />Page 7 <br /> <br />Stitched olan: <br /> <br />A "stitched plan" that could work for Redwood City is described below, for consideration <br />and evaluation in the Supplemental AA Report (including identification of right-af-way, <br />grade, and feasibility). <br /> <br />The objectives of the following proposed stitched plans are to provide the Redwood City <br />Community with an alignment that: <br />. does not physically divide the community along the right-of-way <br />. minimizes right-of-way property acquisition <br />. minimizes operational Impact (noise, visual, and vibration), and <br />. considers alignment preferences of our neighboring communities <br /> <br />Desirable Vertical Alignment: <br /> <br />I <br />i <br /> <br />. <br /> <br />Deep tunnel throughout Redwood City for both Caltrain (including freight) and <br />HSR <br />. Pros: least right-of-way acquisition, minimal disruption during <br />construction, maintains community connectivity, and minimal impact <br />during operation. <br />. Cons: cost, and operational concerns (ventilation, freight rail"spur" <br />connection, emergency access). <br /> <br />Not Desirable (but feasible) Vertical Alignment: <br /> <br />4-track aerial throughout Redwood City <br />. Pros: cost, partial community connectivity. <br />. Cons: aesthetics, operational concerns (freight railllspur" connection, <br />noise, vibration), and requires grade separation of Main Street, Maple <br />Street, Chestnut Street, and Woodside Road. <br /> <br />Conceptual Plan (pending further engineering analysis): <br /> <br />Given the challenges presented in the previous section, the conceptualllstitched" <br />plan is offered as a possible solution to address a number of the challenges in <br />Redwood City. <br /> <br />Traveling southward: <br /> <br />For both HSR and Caltrain, transition to trench alignment before Cordilleras <br />Creek (covered trench required under creek). <br /> <br />Continue open/covered trench alignment to Whipple Avenue (combination of <br />stacked or 4-track trench, whichever results in the least private property impact). <br /> <br />Covered trench alignment through Caltrain station to Main Street (combination of <br />stacked or 4-track trench, whichever results in the least private property impact). <br /> <br />4 <br />