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<br /> <br />City of Redwood City <br /> <br />Cultural Resources <br /> <br />In the course of grading and construction activities, it is possible that cultural and <br />archaeological resources may be unearthed. Basin Research will conduct a Class III <br />pedestrian survey of the proposed project area and prepare a report identifying <br />methods, results, conclusions, and recommendations 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 Register of Historic Places. The EIR will <br />address potential impacts and identify measures that will be required to mitigate <br />impacts should resources be found. <br /> <br />Geology, Soils, and Seismicity <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 applicant, 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 includes a site reconnaissance and review of aerial photographs, but does not <br />include drilling borings, laboratory testing, or other subsurface exploration, though such <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 hydrology impacts of the project. Based on our current understanding of the <br />project, the potentially significant hydrologic issues that will need to be addressed in the <br />Initial Study and EIR include: <br /> <br />Effects of constructing roads, driveways, and homes on steep slopes on post-project <br />storm runoff peak rates and volumes, and downstream channel or storm drain <br />capacity (local flooding); <br /> <br />Effects of changes in storm runoff quantity on bank erosion and channel stability in <br />the seasonal channel and downstream reaches (hydromodification); <br /> <br />Effects of new impervious surfaces on groundwater recharge to the seasonal <br />channel and any associated riparian and/or wetland resources; and <br /> <br />Effects of development on the quality of surface runoff to receiving waters, and on <br />the quality of recharge to groundwater. <br /> <br />Alteration of drainage patterns, placing housing or structures within a lOO-year flood hazard, and inundation by seiche, tsunami, or mudflows do not appear at this time to be <br />issues of significant concern. <br /> <br />January 11, lOOS <br />RMY <br /> <br />12 <br />