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<br />6.1C <br />Page 20 <br /> <br />.,','.,T ,.n. <br />Ii .~ <br />~"" .}. <br />". . '~:";'-"'" . ; .+J.' _ <br /> <br />City of Redwood City <br /> <br />Cultural Resources <br />In the course of grading and ,construction activities, it is possible that cultural and <br />archaeological resources truly be unearthed. Basin Research will conduct a Gass DI <br />pedestrian survey of the proposed project area and prepare a report identifying <br />methods, tesults, concluSions, an,d reconunendations for the treatment of any resources <br />identified. If possible, Basin will make recommendations regarding the eligibility of any <br />identified ,sites for listing on the National Registel'of Historic Places. The Em will <br />address potential impacts cmd identify measures that will be required to mitigate <br />impacts should resources be found. <br /> <br />Geology, Soils, and Seismicity <br /> <br />MHA I RMT will be assisted by Treadwell and Rollo, a geotechnical firm, in addressing <br />the potential geologic and seismic impacts of the project. Due to the steeply sloping <br />nature of the subject property, there will be issues regarding the safety and stability of <br />, construction on these parcels. The EIR will contain a peer review of the geotechnical <br />feasibility study submitted by the applicllnt, and an analysis of the potential geologic <br />and seismic impacts and the mitigation measures to reduce or avoid impacts. This scope <br />of work indudesasitereconnaissance and review of aerial photographs, but does not <br />include drilling borings, laboratory testing, or other subsurface explorati(}n,thoughsuch <br />services are available upon request. <br /> <br />Hydrology and Water Quality <br /> <br />MHA I RMT will be assisted by Balance Hydrologies in addressing the potential water <br />quality and hydr(jlogy impacts of the project. Based on our current understanding of the <br />projecl;. the potentially significant hydrologic issues that will need to be addressed in the <br />Initial Study and EIRinclude: <br /> <br />Effects of constructing roads, driveways, and homes on steep slopes on post-project <br />storm runoff peak rates and volumes, and downstream cl1annel or storm drain <br />capacity (local flooding); <br /> <br />Effects of changes in storm runoff quantityonbank erosion and channel stability in <br />the seasonal channel and downstream teaches (hydromodifkation); <br /> <br />Effects of new impervious surfaces on groundwater recharge to the seasonal <br />cl1anneland any associated riparian and/or wetland resources; and <br /> <br />Effects of development on .thequality of surface runoff to receiving waters, and on <br />the quality of recharge to groundwater. <br /> <br />, , <br />Alteration of drainage patterns, placing housing or structures within a lOO-year flood <br />hazard, and'inundation by seiche, tsunami, or mudflows do not appear at this time to be <br />issues pf significant concern. <br /> <br />January 11,2008 <br />RM'" <br /> <br />12 <br />