Figure SCS-2 Earthquake Faults

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Santa Barbara Arroyo Palmdale Santa Ana Flt. Parida Flt. Mesa Rincon Creek Flt. San Andreas Fault Red Mountain Flt. Holser Flt. San Gabriel Fault Zone Llano Fault San Cayetano Flt. Explanation Oak Ridge Fault 34.5o Ventura Fault Historic Fault - Big Mountain Flt. Ruptured Last Santa Susana Flt. 200 Years Ventura Oak Ridge Fault Holocene Fault Simi Fault Northridge Blind Thrust Simi Valley Northridge Hills Fault Late Quaternary Mission Hills Flt.San Fernando Fault San Gabriel Fault Zone Fault - Ruptured Last 700,000 Years Oxnard Vasquez Creek Fault (Dunsmore Seg) Los Angeles County San Bernadino County Quaternary Fault - Chatsworth Fault Northridge Ruptured Bailey Fault Thousand Oaks Verdugo Fault Last 1.6 Million Years Sycamore Canyon Fault Sierra Madre Fault Zone Santa Cruz Boney Mountain Fault Island 34.25o Pre-Quaternary Fault Santa Monica Mountains Thrust Eagle Rock Fault (Sierra Madre Seg) Ventura County Sawpit Canyon Fault Anacapa Los Angeles County Islands Santa Cruz Island Fault Pasadena Blind Thrust Fault Hollywood Fault Sierra Madre Fault Zone (Surface Projection); Malibu (Los AngelesRaymond Seg) Fault San Antonio Flt. Cucamonga Fault Open barbs represent Malibu Coast Fault (Duarte Seg) West LA Blind Thrust the upper edge of blind thrust fault ramp; barbs Los Angeles Monterey Park Indian Hills Fault point downdip Santa Monica Fault Newport Inglewood Fault Overland Flt. Baldwin Park ? Red Hills Fault Santa Monica Las Cienegas ? San Jose Fault Fault Pomona Fault locations based on; USGS (1988); Anacapa-Dume Fault (LA East LA (Puente Hills Seg) Segment) (Baldwin Hills Seg) Blind Thrust Ziony and Jones (1989); Wright (1991); Inglewood Central Ave. Fault Jennings (1994); Dolan, et al. (1995); Santa Cruz-Santa Catalina Ridge Fault Zone Puente Hills Charnock Fault Shaw and Shearer (1999) and Thrust Whittier Fault SCEC (1999). (Santa Fe Springs o (Central Seg) Segment) 34 L A County San Bernadino County (Coyote Hills Segment) Orange County Norwalk Fault Chino FaultSan Bernadino County Riverside County Los Alamitos Fault Torrance Palos Verdes Fault San Pedro Basin Fault Zone Peralta Hills Fault Anaheim Riverside County Long Beach El Modeno Fault Orange County Cabrillo Fault Elsinore Fault Zone Newport Inglewood Fault (Santa Ana Seg) Santa Ana Palos Verdes Fault Zone 33.75o San Clemente Fault Zone Huntington Beach San Joaquin Hills Thrust (?) Santa Barbara Newport Beach Island Mission Viejo Newport-Inglewood/RoseLaguna Beach Source: Bing Yen & Associates, Inc, Canyon Fault February 2000 Santa Catalina Island 33.50o Dana Point North Figure SCS-2 0 9 18 Miles Earthquake Faults Monterey Park General Plan 9 July 2001.

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Structure Preliminary Geotechnical Report
I NITIAL S TUDY/MITIGATED N EGATIVE D ECLARATION Y ORBA L INDA B OULEVARD W IDENING I MPROVEMENTS P ROJECT S EPTEMBER 2020 Y ORBA L INDA, C ALIFORNIA APPENDIX F STRUCTURE PRELIMINARY GEOTECHNICAL REPORT P:\HNT1901.02 - Yorba Linda\Draft ISMND\Draft ISMND_Yorba Linda Blvd Widening Improvements Project_9.18.20.docx «09/18/20» Y ORBA L INDA B OULEVARD W IDENING I MPROVEMENTS P ROJECT I NITIAL S TUDY/MITIGATED N EGATIVE D ECLARATION Y ORBA L INDA, C ALIFORNIA S EPTEMBER 2020 This page intentionally left blank P:\HNT1901.02 - Yorba Linda\Draft ISMND\Draft ISMND_Yorba Linda Blvd Widening Improvements Project_9.18.20.docx «09/18/20» Earth Mechanics, Inc. Geotechnical & Earthquake Engineering November 13, 2019 EMI Project No. 19-143 HNTB 200 E. Sandpointe Avenue, Suite 200 Santa Ana, California 92707 Attention: Mr. Patrick Somerville Subject: Structure Preliminary Geotechnical Report Yorba Linda Blvd Bridge over Santa Ana River (Widen), Bridge No. 55C-0509 Yorba Linda Boulevard and Savi Ranch Parkway Widening Project City of Yorba Linda, California Dear Mr. Somerville: Attached is our Structure Preliminary Geotechnical Report (SPGR) for the proposed widening of the Yorba Linda Boulevard Bridge over the Santa Ana River (Bridge No. 55C-0509) in the City of Yorba Linda, California. The bridge widening is part of the Yorba Linda Boulevard and Savi Ranch Parkway Widening Project. This report was prepared to support the Project Approval and Environmental Document (PA-ED) phase of the project. The SPGR includes information required by the 2017 California Department of Transportation (Caltrans) Foundation Reports for Bridges document.
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Earthquakes on the Ventura Blind Thrust Fault: Implications for Multifault Ruptures in the Transverse Ranges of Southern California
This is a repository copy of Paleoseismologic evidence for large-magnitude (M-w 7.5-8.0) earthquakes on the Ventura blind thrust fault: Implications for multifault ruptures in the Transverse Ranges of southern California. White Rose Research Online URL for this paper: http://eprints.whiterose.ac.uk/108547/ Version: Accepted Version Article: McAuliffe, L. J., Dolan, J. F., Rhodes, E. J. et al. (3 more authors) (2015) Paleoseismologic evidence for large-magnitude (M-w 7.5-8.0) earthquakes on the Ventura blind thrust fault: Implications for multifault ruptures in the Transverse Ranges of southern California. Geosphere, 11 (5). pp. 1629-1650. ISSN 1553-040X https://doi.org/10.1130/GES01123.1 Reuse Unless indicated otherwise, fulltext items are protected by copyright with all rights reserved. The copyright exception in section 29 of the Copyright, Designs and Patents Act 1988 allows the making of a single copy solely for the purpose of non-commercial research or private study within the limits of fair dealing. The publisher or other rights-holder may allow further reproduction and re-use of this version - refer to the White Rose Research Online record for this item. Where records identify the publisher as the copyright holder, users can verify any specific terms of use on the publisher’s website. Takedown If you consider content in White Rose Research Online to be in breach of UK law, please notify us by emailing [email protected] including the URL of the record and the reason for the withdrawal request. [email protected] https://eprints.whiterose.ac.uk/ 1 Paleoseismologic evidence for large-magnitude (Mw 7.5–8.0) 2 earthquakes on the Ventura blind thrust fault: Implications for 3 multifault ruptures in the Transverse Ranges of southern California 4 5 Lee J.
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Rockwell International Corporation 1049 Camino Dos Rios (P.O
SC543.J6FR "Mads available under NASA sponsrislP in the interest of early and wide dis *ninatf of Earth Resources Survey Program information and without liaoility IDENTIFICATION AND INTERPRETATION OF jOr my ou mAOthereot." TECTONIC FEATURES FROM ERTS-1 IMAGERY Southwestern North America and The Red Sea Area may be purchased ftohu Oriinal photograPhY EROS D-aa Center Avenue 1thSioux ad Falls. OanOta So, 7 - ' ... +=,+. Monem Abdel-Gawad and Linda Tubbesing -l Science Center, Rockwell International Corporation 1049 Camino Dos Rios (P.O. Box 1085) Thousand Oaks, California 91360 U.S.A. N75-252 3 9 , (E75-10 2 9 1 ) IDENTIFICATION AND FROM INTERPRETATION OF TECTONIC FEATURES AMERICA ERTS-1 IMAGERY: SOUTHWESTERN NORTH Unclas THE RED SEA AREA Final Report, 30 May !AND1972 - 11 Feb. 1975 (Rockwell International G3/43 00291 _ May 5, 1975 , Type III Fihnal Report for Period: May 30, 1972 - February 11, 1975, . Prepared for NASAIGODDARD SPACE FLIGHT CENTER Greenbelt, Maryland 20071 Pwdu. by NATIONAL TECHNICAL INFORMATION SERVICE US Dopa.rm.nt or Commerco Snrnfaield, VA. 22151 N O T I C E THIS DOCUMENT HAS BEEN REPRODUCED FROM THE BEST COPY FURNISHED US BY THE SPONSORING AGENCY. ALTHOUGH IT IS RECOGN.IZED THAT CER- TAIN PORTIONS ARE ILLEGIBLE, IT IS-BE'ING RE- LEASED IN THE INTEREST OF MAKING AVAILABLE AS MUCH INFORMATION AS POSSIBLE. SC543.16FR IDENTIFICATION AND INTERPRETATION OF TECTONIC FEATURES FROM ERTS-1 IMAGERY Southwestern North America and The Red Sea Area Monem Abdel-Gawad and Linda Tubbesi'ng Science Center/Rockwell International Corporation 1049 Camino Dos Rios, P.O. Box 1085 Thousand Oaks, California 91360 U.S.A.
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SUMMARIES of TECHNICAL REPORTS, VOLUME X Prepared by Participants in NATIONAL EARTHQUAKE HAZARDS REDUCTION PROGRAM June 1980
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5.4 Geology and Soils
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Report of Geotechnical Investigation Proposed Improvements
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City of Monrovia General Plan Safety Element Adopted June 12, 2002 Resolution No. 2002-40 Safety Element City of Monrovia Table of Contents I. Introduction ............................................................................................................................... 1 II. Seismic Activity ......................................................................................................................... 2 A. Background......................................................................................................................... 2 1. Geologic Setting............................................................................................................ 2 2. The Alquist-Priolo Earthquake Fault Zone Act ............................................................. 2 Major Faults .................................................................................................................. 3 B. Goals, Objectives and Policies - Seismic Activity............................................................... 9 III. Flood Control........................................................................................................................... 11 A. Background....................................................................................................................... 11 1. Setting ......................................................................................................................... 11 2. Mud and Debris Flows ...............................................................................................
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Activity of the Offshore Newport–Inglewood Rose Canyon Fault Zone, Coastal Southern California, from Relocated Microseismicity by Lisa B
Bulletin of the Seismological Society of America, Vol. 94, No. 2, pp. 747–752, April 2004 Activity of the Offshore Newport–Inglewood Rose Canyon Fault Zone, Coastal Southern California, from Relocated Microseismicity by Lisa B. Grant and Peter M. Shearer Abstract An offshore zone of faulting approximately 10 km from the southern California coast connects the seismically active strike-slip Newport–Inglewood fault zone in the Los Angeles metropolitan region with the active Rose Canyon fault zone in the San Diego area. Relatively little seismicity has been recorded along the off- shore Newport–Inglewood Rose Canyon fault zone, although it has long been sus- pected of being seismogenic. Active low-angle thrust faults and Quaternary folds have been imaged by seismic reflection profiling along the offshore fault zone, raising the question of whether a through-going, active strike-slip fault zone exists. We applied a waveform cross-correlation algorithm to identify clusters of microseis- micity consisting of similar events. Analysis of two clusters along the offshore fault zone shows that they are associated with nearly vertical, north-northwest-striking faults, consistent with an offshore extension of the Newport–Inglewood and Rose Canyon strike-slip fault zones. P-wave polarities from a 1981 event cluster are con- sistent with a right-lateral strike-slip focal mechanism solution. Introduction The Newport–Inglewood fault zone (NIFZ) was first clusters of microearthquakes within the northern and central identified as a significant threat to southern California resi- ONI-RC fault zone to examine the fault structure, minimum dents in 1933 when it generated the M 6.3 Long Beach earth- depth of seismic activity, and source fault mechanism.
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Appendix IS-3 Soils and Geology Report
Appendix IS-3 Soils and Geology Report August 7, 2017 Revised February 22, 2019 File No. 21439 Bishop A. Elias Zaidan, Successor Trustee Our Lady of Mt. Lebanon – St. Peter Maronite Catholic Cathedral Los Angeles Real Estate Trust 333 San Vicente Boulevard Los Angeles, California 90048 Attention: Construction Committee Subject: Environmental Impact Report, Soils and Geology Issues Proposed Church Addition and Residential Tower 333 South San Vicente Boulevard, Los Angeles, California Ladies and Gentlemen: 1.0 INTRODUCTION This document is intended to discuss potential soil and geological issues for the proposed development, as required by Appendix G of the California Environmental Quality Act (CEQA) Guidelines. This report included one exploratory excavation, collection of representative samples, laboratory testing, engineering analysis, review of published geologic data, review of available geotechnical engineering information and the preparation of this report. 2.0 SITE CONDITIONS The site is located at 333 South San Vicente Boulevard, in the City of Los Angeles, California. The site is triangular in shape, and just under one acre in area. The site is bounded by a city alley to the north, San Vicente Boulevard to the east, Burton Way to the south, and Holt Avenue to the west. The site is shown relative to nearby topographic features in the enclosed Vicinity Map. The site is currently developed with a catholic church complex, and a paved parking lot. The structures which currently occupy the site range between one and three stories in height. The site’s grade is relatively level, with no pronounced highs or lows. Vegetation at the site consists of abundant mature trees, grass lawns, bushes and shrubs, contained in manicured landscaped areas.
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The historical surface ruptures in the Laguna Salada Fault region - Baja California, Mexico 1 Introduction Before the 2016 December meetings (FDHA workshop, 8-9th December, and AGU Fall Meeting, 11-16th December) in the Bay Area of Northern California, we spent two days with Martin Siem (), guided by Tom Rockwell (University of San Diego) in the Laguna Salada Desert (Baja California, Mexico). The objective was to observe the surface ruptures (1892, 1934, 2010) associated with historical earthquakes that occurred along the Laguna Salada shoreline in the Cucapah range. The most recent surface rupture has been extensively studied by several authors and the accurate data have been published recently, so that this case will be included in the SURE database. 2 Geological background In this high-strain region between Pacific and North-American plates, the Laguna Salada Fault is the southern continuation of the strike-slip Elsinore Fault Zone into the Extensional Baja California Province. It is an oblique transtensional fault, which is the main fault bounding the Laguna Salada basin to the north-east. Figure 1: Location of the Laguna Salada fault zone, few tens km west of the plate boundary (red line) between Pacific plate (to the west) and North American plate (to the east). The relative right-lateral displacement is accommodated along the NW-SE plate boundary, at around 30 mm/y Page 2/14 The Laguna Salada (LSF) is a west-dipping high-angle fault which ruptured up to the ground surface in 1892 during a M7+ earthquake (Figure 2). Its slip rate is around 3 mm/y (Rockwell et al, 2015).
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