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2 Environment�l Analyszr <br /> incxease as predicted, the water surface eZevarion during an extreme storm or tidal event would <br /> exceed the tap of the creek-side wall. <br /> A sea level rise of 4.6 feet(55 inches) by the year 21d0 would increase the MIIIiW to 12.0 feet. This <br /> daily I�7HH�'level would exceed the adjacent banks of Redwood Creek,potentially flooding the <br /> nearby development areas. The City would need to implement other rneasures to mitigate this <br /> potential impact. See Mitiga.tion Measure HYD 2 below. <br /> The City anricipates that inundarion of the joint-use path during some peak storm and tidal events <br /> and would close the path to avoid risk to the public. The project would include provisions to <br /> discourage users during extreme events. City maintenance staff would be responsible to clase access <br /> to the joint-use path when unsafe condirions are apparent. Call boxes at each end of the joint-use <br /> path unc�er US 101 wauld provide direct access to City emergency dispatch services or 911. <br /> Tempoxary closing of the path would not�esult in increase floocl�ng risk elsewhere,but would reduce <br /> the use of the path and decrease its benefits. <br /> The following measUre would reauce the effect of increased sea Zevels in the project area. <br /> Mitigation Measure HYD 2: Increased Height of Creek-side Wal1 <br /> The height of the creek-side wall map require retrofitting if future sea level rise in Redwood <br /> Creek results in frequent �looding of the joint-use path during 5 or 10 year sto.rm events.The <br /> City shall monitor seal level rise and retrofit the creek-side wall when necessary. <br /> With the proposed miligat�on,the effect of increased flooding would be less than significant. (Less <br /> than Significant Impact with Mitigation Incorpotation} <br /> j)Irlundatior2 by serche, tsunami, ormudflow.� <br /> The project axea would be located neat an area subject to tidal seiches. The buffer of the islands <br /> around the project area and distance from the San Francisco Bay shoreline would decrease the <br /> severity of impacts associated with seiches and protect against tsunamis {City of Redwood City, <br /> 201fl). Gate closures during such emergencp conditions and call boxes would reduce potential risks <br /> to the public,and the impacts of these events would be a less than significant. (Less than <br /> Significant Impact) <br /> 2.10 LAND USE AND PLANNING <br /> The proposed US 101 undercrossing would create a strong physical link between the Downtawn <br /> district and the Bayfront,implemenring a major object�ve of the North Main Street Precise Plan <br /> (North Main Street Precise Plan 2007),the Peninsula Park Precise I'lan, and the General Plan. The <br /> proposed pedestrian and bicycie access irnprovements would strengthen the corridor linking these <br /> important evolving districts. <br /> 2-48 US 101 Pede.ctraan Undercro.r.rang and Bair <br /> .I.rland Aoad Storm Drain Purja�i Statian Prroject <br />