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Potentially Significant Potentially Unless Less than Significant Mitigation Significant Impact Incorporated Impact No Impact Comment a-d: Historic and archaeological resources were evaluated In the Downtown San Leandro TOD Strategy EIR (September 2007)and in the San Leandro General Plan EIR (November 2001). A review of historical maps indicate that the property, while currently vacant, was previously used as the Del Monte Processing Plant, but that building has since been demolished. The Del Monte facility was first identified in the 1968 Sanbom Map. There is the presence of residual foundation structures along the.southwestern boundary of the property that are left behind from the previous use. However,since the State Office of Historic Preservation typically considers structures to be potentially historic if they are at least 45 years old (built in 1950 or earlier) the remaining foundation structure is not considered to be eligible for historic status. Therefore, there are no historic structures on the project site and no impacts to buildings or resources that could have historic status. Based on an evaluation of the environmental setting and features associated with known sites, Native American cultural resources in this part of Alameda County are found in many areas adjacent to water resources like the bayshore or intermittent and perennial watercourses. The proposed project area is on a broad alluvial plain that is marginal to the bayshore. For this reason it is unlikely that unrecorded Native American cultural resources exist in the project area. Although the project site does not contain recorded Native American or historic-period archeological resources, there remains a low possibility of encountering Native American and cultural archaeological or human remains during site disturbance. Construction activities could result in ground disturbance that would cause a substantially adverse change in the significance of an unknown archeological resource. Mitigation Measure #4: The applicant shall cease any grading or construction activities and shall consult with appropriate representatives of the Native American Heritage Commission if human remains are discovered, in accordance with State Law and Section 7050.5 of the Health and Safety Code, Section 15064.5 (e) of the State CEQA Guidelines and Section 5097.98 of the Public Resources Code. Implementation of Mitigation Measures#4 reduces potential impacts to a less than significant level. VI. GEOLOGY AND SOILS. Would the project: a. Expose people or structures to potential substantial adverse effects, including the risk of loss, injury,or death involving: i) Rupture of a known earthquake fault,as delineated on the most recent X Alquist-Priolo Earthquake Fault Zoning Map issued by the State Geologist for the area or based on other substantial evidence of a known fault. Refer to Division of Mines and Geology Special Publication 42. ii) Strong seismic ground shaking? X iii) Seismic-related ground failure,including liquefaction? X iv) Landslides? X b. Result in substantial soil erosion or loss of topsoil? X • c. Be located on a geologic unit or soil that is unstable, or that would become X unstable as a result of the project,(excavation,grading,clearing,grubbing or fill)and potentially result In on-or off-site landslide, lateral spreading, subsidence,liquefaction or collapse? d. Be located on expansive soil,as defined in Table 18-1-B of the Uniform Building Code(1994),creating substantial risks to life or property?(21,27) X e. Have soils incapable of adequately supporting the use of septic tanks or X alternative wastewater disposal systems where sewers are not available for the disposal of wastewater? (n/a) • f. Any increase in wind or water erosion of soils,either on or off-site? X 8 •