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Hana Japan Restaurant Project <br />Initial Study/Mitigated Negative Declaration <br />39 <br />May 2025 <br />VII. GEOLOGY AND SOILS. <br />Would the project: <br />Potentially <br />Significant <br />Impact <br />Less-Than- <br />Significant <br />with <br />Mitigation <br />Incorporated <br />Less-Than- <br />Significant <br />Impact <br />No <br />Impact <br />a. Directly or indirectly cause potential substantial adverse <br />effects, including the risk of loss, injury, or death <br />involving: <br /> <br />i. Rupture of a known earthquake fault, as <br />delineated on the most recent Alquist-Priolo <br />Earthquake Fault Zoning Map issued by the State <br />Geologist for the area based on other substantial <br />evidence of a known fault? Refer to Division of <br />Mines and Geology Special Publication 42. <br />    <br />ii. Strong seismic ground shaking?     <br />iii. Seismic-related ground failure, including <br />liquefaction?     <br />iv. Landslides?     <br />b. Result in substantial soil erosion or the loss of topsoil?     <br />c. Be located on a geologic unit or soil that is unstable, or <br />that would become unstable as a result of the project, <br />and potentially result in on- or off-site landslide, lateral <br />spreading, subsidence, liquefaction or collapse? <br />    <br />d. Be located on expansive soil, as defined in Table 18-1B <br />of the Uniform Building Code (1994), creating substantial <br />direct or indirect risks to life or property? <br />    <br />e. Have soils incapable of adequately supporting the use of <br />septic tanks or alternative wastewater disposal systems <br />where sewers are not available for the disposal of <br />wastewater? <br />    <br />f. Directly or indirectly destroy a unique paleontological <br />resource or site or unique geologic feature?     <br /> <br />Discussion <br />The following discussion is based primarily on reports prepared for the proposed project, including <br />the following: a Geotechnical Report prepared by ENGEO Incorporated (ENGEO)14 and a <br />subsequent 2022 California Building Code (CBC) Seismic Design Parameters Update (CBC <br />Update) prepared by ENGEO 15; and a Fault Exploration report prepared by ENGEO.16 The <br />reports were peer reviewed in 2008 by Cotton, Shires, and Associates, Inc., but required an <br />additional review with the most updated project plans. BSK Associates (BSK) conducted a peer <br />review of the reports and provided comments in September 2024,17 following which ENGEO <br />prepared responses 18 and an updated Geotechnical Report.19 The foregoing reports are included <br />in this IS/MND as Appendix C. <br /> <br />a.i-ii. The site is located within a State Earthquake Fault Zone for the Calaveras fault. The State <br />shows two traces of the Calaveras fault crossing the site (see Figure 7). The eastern trace <br />is mapped by the State near the toe of the hillside, and roughly parallel to Foothill Road <br />with a northern termination near Dublin Canyon Road. The second fault trace is mapped <br />stepping to the left about 100 feet to the west of the eastern trace. <br /> <br />14 ENGEO Incorporated. Geotechnical Report, Hana Japan Steakhouse, Pleasanton, California. May 2, 2008. <br />15 ENGEO Incorporated. 2022 CBC Seismic Design Parameters Update. January 20, 2023. <br />16 ENGEO Incorporated. Fault Exploration, Hana Japan Steak House, Pleasanton, California. March 31, 2008. <br />17 BSK Associates. Peer Review of Geotechnical and Geologic Hazard Investigations, 11991 Dublin Canyon Road <br />(Hana Japan), Pleasanton, California. September 6, 2024. <br />18 ENGEO Incorporated. Response to Comments. November 11, 2024. <br />19 ENGEO Incorporated. Geotechnical Report Update. January 15, 2025.