Laserfiche WebLink
<br />FAUL T MAPPING - The site is in a very seismically active region. Alquist-Priolo (A-P) Earthquake Fault <br />Zones are created by the State Geologist for faults which are considered to be potentially active. Active <br />faults are those which show evidence of movement within the last 11,000 years. The lot is not within an <br />Earthquake Fault Zone, although the Hayward fault passes a short distance to the east. The following <br />tabulated fault data are derived from state maps and publications. <br /> <br />Fault Type C/~ut D/atance Max/mum Moment Magnitude Slip Rate Recurrence/nterva/ <br />Hayward A 1 km 7.1 9.0 mm/yr 167 yr <br />Concord B 23km 6.9 6.0 mmlyr 176yr <br />Calaveras B 14 km 6.8 6.0 mmlyr 146 yr <br /> <br />Other regional potentially active faults have a similar probability of generating earthquakes in the near <br />future. Therefore, there is a high risk of potentially damaging intensities of ground shaking at the site <br />during the useful life of the proposed structures. There are numerous other mapped fault traces in the <br />region which are not known to be potentially active. On-going seismic studies may refine or change the <br />foregoing information. The locations of the Concord, Calaveras and Hayward Faults and other regional <br />faults relative to the site are shown on Figure 5. <br /> <br />Proposed Mixed Use Development, 311 MacArthur Boulevard, San Leandro, CA <br /> <br />Gu, GE pn 9451706002 <br /> <br />May 10, 2005 <br /> <br />Page 3 <br />