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Veco Design Studio <br />June 3, 2024 <br />Project 10112-04 <br />Page 5 <br /> <br />b) In Southern California, most of the seismic damage to manmade <br />structures results from ground shaking and, to a lesser degree, from <br />liquefaction and ground rupture caused by earthquakes along <br />active fault zones. <br /> <br />c) In general, the greater the magnitude of the earthquake, the greater <br />the potential damage. <br /> <br />3.4.2 Ground Rupture <br /> <br /> The subject property is not located within an Earthquake Fault Zone <br />(previously known as an Alquist-Priolo Special Studies Zone). The <br />closest known active fault is the Newport-Inglewood Fault, located at a <br />distance of approximately 6.5 miles southwest of the project site. Due to <br />the distance of the closest active fault to the site, ground rupture is not <br />considered a significant hazard at the site. <br /> <br />3.4.3 Deterministic Seismic Hazard Analysis <br /> <br />We utilized the California Office of Statewide Health Planning and <br />Development (OSHPD) Seismic Design Maps internet program to <br />calculate the peak ground acceleration (PGA) at the project site location. <br />Using the ASCE 7-16 standard and Site Class D (Default), the PGAM at <br />the subject property resulted to be 0.666g. <br /> <br />3.4.4 Liquefaction <br /> <br />The project site is located in State of California delineated Seismic Hazard <br />Zone for liquefaction potential. The shallowest historic ground water was <br />determined to be at 5 feet below grade. The potential for liquefaction is <br />present. Mitigating measures to reduce the effects of potential liquefaction <br />are included in the following sections. <br /> <br /> 3.4.5 Landslides <br /> <br />No landslides are mapped to be present within the site area. <br /> <br />4. LABORATORY TESTING <br /> <br /> 4.1 Expansion Potential <br /> <br />Surface soils were collected in the field and tested in the laboratory in accordance <br />with the ASTM D4829 Test Method. The degree of expansion potential is <br />determined from soil volume changes occurring during saturation of the <br />specimen. The result of the test is presented below: <br />