REPORT SEISMIC RESILIENCE FIRST BIENNIAL REPORT The Metropolitan Water District of Southern California 700 N. Alameda Street, Los Angeles, California 90012 Report No. 1551 February 2018 The Metropolitan Water District of Southern California Seismic Resilience First Biennial Report SEISMIC RESILIENCE FIRST BIENNIAL REPORT Prepared By: The Metropolitan Water District of Southern California 700 North Alameda Street Los Angeles, California 90012 Report Number 1551 February 2018 Report No. 1551 – February 2018 iii The Metropolitan Water District of Southern California Seismic Resilience First Biennial Report Copyright © 2018 by The Metropolitan Water District of Southern California. The information provided herein is for the convenience and use of employees of The Metropolitan Water District of Southern California (MWD) and its member agencies. All publication and reproduction rights are reserved. No part of this publication may be reproduced or used in any form or by any means without written permission from The Metropolitan Water District of Southern California. Any use of the information by any entity other than Metropolitan is at such entity's own risk, and Metropolitan assumes no liability for such use. Prepared under the direction of: Gordon Johnson Chief Engineer Prepared by: Robb Bell Engineering Services Don Bentley Water Resource Management Winston Chai Engineering Services David Clark Engineering Services Greg de Lamare Engineering Services Ray DeWinter Administrative Services Edgar Fandialan Water Resource Management Ricardo Hernandez Engineering Services Rosa Lau Engineering Services Silvia Perez Water System Operations Ian Whyte Water System Operations Reviewed by: Grace Chan Water Resource Management Heather Collins Water System Operations Kevin Donhoff Water Resource Management Jim Green Water System Operations Bob Harding Water Resource Management Mike Rojas Engineering Services Jack Safely Water Resource Management Deven Upadhyay Assistant General Manager/Chief Operating Officer Brent Yamasaki Water System Operations Additional copies: The Seismic Resilience Report is located on the Seismic Resilience SharePoint site. To obtain a copy of this document, please contact the Engineering Services Group. Disclaimer Extensive efforts have been made to ensure that the material contained in this document is accurate as of the date of publication. There are many factors, however, related to the content and applicability of this document which are beyond the control of MWD. In addition, the contents of this publication will be periodically updated, so the reader should inquire about any such changes in addition to reading this document. Finally, the reader is encouraged to seek appropriate technical and/or legal advice when specific facts or circumstances arise that raise questions concerning the applicability or interpretation of the policies and procedures discussed herein. PUBLICATION HISTORY: Initial Release (First Biennial Report) February 2018 Report No. 1551 – February 2018 Page iv The Metropolitan Water District of Southern California Seismic Resilience First Biennial Report TABLE OF CONTENTS EXECUTIVE SUMMARY ............................................................................................................................ VII SECTION 1 INTRODUCTION .................................................................................................................. 1‐1 Purpose ...................................................................................................................................................... 1‐1 Seismic Resilience Strategy Structure ........................................................................................................ 1‐2 Report Organization ................................................................................................................................... 1‐3 List of Abbreviations and Acronyms .......................................................................................................... 1‐3 SECTION 2 BACKGROUND .................................................................................................................... 2‐1 Seismic Risk ................................................................................................................................................ 2‐1 Seismic Resilience ...................................................................................................................................... 2‐4 Metropolitan’s Historical Approach to Seismic Resilience ........................................................................ 2‐5 Metropolitan’s Comprehensive, Integrated Seismic Resilience Strategy ................................................ 2‐11 SECTION 3 PLANNING COMPONENT .................................................................................................... 3‐1 Diversified Water Supply Portfolio ............................................................................................................ 3‐1 System Flexibility ........................................................................................................................................ 3‐3 Emergency Storage .................................................................................................................................... 3‐4 SECTION 4 ENGINEERING COMPONENT ............................................................................................... 4‐1 Seismic Resilience of Structures ................................................................................................................. 4‐1 Special Seismic Assessments ...................................................................................................................... 4‐4 Seismic Resilience of Dams and Reservoirs ............................................................................................... 4‐7 Pipeline Seismic Resilience ....................................................................................................................... 4‐10 SECTION 5 OPERATIONS COMPONENT ................................................................................................ 5‐1 SECTION 6 REPORTING COMPONENT .................................................................................................. 6‐1 Record Keeping .......................................................................................................................................... 6‐1 Annual Updates .......................................................................................................................................... 6‐1 Formal Reporting ....................................................................................................................................... 6‐1 SECTION 7 SEISMIC RESILIENCE WATER SUPPLY TASK FORCE ............................................................... 7‐1 2016 Aqueduct Workshop ......................................................................................................................... 7‐2 Future Task Force Activities ....................................................................................................................... 7‐4 SECTION 8 SEISMIC RESILIENCE PERFORMANCE OBJECTIVES AND NEAR‐TERM GOALS ........................ 8‐1 Established Performance Objectives and Near‐Term Goals ...................................................................... 8‐1 Other Near‐Term Goals .............................................................................................................................. 8‐6 Report No. 1551 – February 2018 Page v The Metropolitan Water District of Southern California Seismic Resilience First Biennial Report TABLE OF CONTENTS (cont’d) Table 4‐1: Current Metropolitan Jurisdictional Dam and Reservoir Facilities .............................................. 4‐8 Figure 1‐1: Seismic Resilience Strategy Structure and High Level Goals ...................................................... 1‐2 Figure 2‐1: Likelihood of M6.7 or greater earthquake in the next 30 years (Source: UCERF3) .................. 2‐1 Figure 2‐2: Major Earthquake Faults in Southern California ........................................................................ 2‐2 Figure 2‐3: Resilience ‐‐ the ability to reduce the magnitude and/or duration of disruptive events .......... 2‐4 Figure 2‐4: Detailed Breakdown of Metropolitan’s Seismic Resilience Strategy ....................................... 2‐11 Figure 3‐1: Integrated Resource Plan, Metropolitan’s Service Area Supplies .............................................. 3‐2 Figure 4‐1: Status of Seismic Assessments and Upgrades of Pre‐1990 Structures ...................................... 4‐3 Figure 4‐2: Example of Seismic Resistant Pipe (courtesy of Kubota Corp. and JFE) ................................... 4‐11 Figure 5‐1: Metropolitan’s Emergency Response Organization ................................................................... 5‐1 Figure 7‐1: Seismic Resilience Water Supply Task Force .............................................................................. 7‐2 List of Appendices Appendix 1 Key Seismic Resilience Achievements Appendix 2 Modern Era Earthquakes over M6.3 Within or Near Metropolitan’s Primary Service Area Appendix 3 Provision for CRA Uplift Appendix 4 Summary of Damage to Metropolitan Infrastructure from Past Earthquakes Appendix 5 Metropolitan Water Storage Capacity Appendix 6 Seismic Design Frequently Asked Questions (FAQs) Appendix 7 Summary of