SOUTHWESTERN UNITED STATES GROUND MOTION CHARACTERIZATION SSHAC LEVEL 3 Workshop #1 Proceedings Version 1.1 ii Southwestern United States Ground Motion Characterization SSHAC Level 3 WORKSHOP #1 PROCEEDINGS WORKSHOP #1 PROCEEDINGS: Critical Issues and Data Needs March 19-21, 2013 Hilton Oakland Airport, California Prepared for: Arizona Public Service Company Palo Verde Nuclear Generating Station Wandell, Christopher J. Senior Consulting "Chief" Civil Engineer Phone: (623) 393-6741; E-mail: [email protected] Pacific Gas and Electric Company Diablo Canyon Power Plant Klimczak, Richard Director Geosciences Phone: (415) 973-2791; E-mail: [email protected] Southern California Edison Company San Onofre Nuclear Generating Station McAndrews, Caroline Director, Nuclear Strategic Projects Phone: (949)368-3540; E-mail: [email protected] Version: 1.1 Date: May 13, 2013 Page ii Southwestern United States Ground Motion Characterization SSHAC Level 3 WORKSHOP #1 PROCEEDINGS LIST OF ABBREVIATIONS and COMMON ACRONYMS ACR Active Crustal Region AFE Annual Frequency of Exceedance APS Arizona Public Services BBP Broad Band Platform CBR Center, Body, and Range CEA California Earthquake Authority CEC California Energy Commission CEUS Central and Eastern United States CFM Community Fault Models CFR Code of Federal Regulations CGS California Geological Survey CPUC California Public Utilities Commission DCPP Diablo Canyon Power Plant EE Evaluator Expert FGF Fragile Geological Feature FW Foot Wall GIS Geographic Information System GMC Ground Motion Characterization GMPE Ground Motion Prediction Equation GMRS Ground Motion Response Spectrum GPS Global Positioning System HID Hazard Input Document HC Hazard Calculation HW Hanging Wall Hz Hertz IPRG Independent Peer Review Group ITC Informed Technical Community LiDAR Light Detection and Ranging NGA Next Generation Attenuation NGA-West2 Project name for the update of the 2008 NGA models NI Newport Inglewood NI/RC Newport Inglewood / Rose Canyon NPP Nuclear Power Plant Page iii iv Southwestern United States Ground Motion Characterization SSHAC Level 3 WORKSHOP #1 PROCEEDINGS NSHM National Seismic Hazard Mapping PE Proponent Expert PEER Pacific Earthquake Engineering Research Center PGA Peak Ground Acceleration PG&E Pacific Gas & Electric OBT Oceanside Blind Thrust PM Project Manager PPRP Participatory Peer Review Panel PSHA Probabilistic Seismic Hazard Analysis PTI Project Technical Integrator PV Palos Verdes PVNGS Palo Verde Nuclear Generating Station QA Quality Assurance RC Rose Canyon RE Resource Expert RG Regulatory Guide SCE Southern California Edison SCEC Southern California Earthquake Center SCFM Statewide Community Fault Model SCSN Southern California Seismic Network SONGS San Onofre Nuclear General Station SSC Seismic Source Characterization SSHAC Senior Seismic Hazard Analysis Committee SWUS Southwest United States TA Transportable Array TDI Technically Defensible Interpretation TI Technical Integrator UCERF2 Uniform California Earthquake Rupture Forecast, Version 2 UCERF3 Uniform California Earthquake Rupture Forecast, Version 3 USGS United States Geological Society U.S.NRC U.S. Nuclear Regulatory Commission USR Unified Structural Representation VS,30 Shear Wave Velocity in the upper 30m WGCEP Working Group on California Earthquake Probabilities WUS Western United States Page iv Southwestern United States Ground Motion Characterization SSHAC Level 3 WORKSHOP #1 PROCEEDINGS TABLE OF CONTENTS Page LIST OF ABBREVIATIONS and COMMON ACRONYMS .......................................................................................... iii TABLE OF CONTENTS ............................................................................................................................................ v WORKSHOP #1 INTRODUCTION............................................................................................................................ 1 Purpose: ........................................................................................................................................................... 1 Approach: ........................................................................................................................................................ 1 Workshop #1 Agenda ..................................................................................................................................... 2 Workshop #1 participants ............................................................................................................................... 6 WORKSHOP #1 SUMMARY ................................................................................................................................... 8 Project background ......................................................................................................................................... 8 General workshop summary ........................................................................................................................... 8 Topic 1: Ground Motion Prediction Equations (GMPEs) ......................................................................... 8 Topic 2: Data to constrain GMPEs in Critical Ranges ............................................................................... 9 Topic 3: Use of Simulations for SWUS GMC .......................................................................................... 10 Topic 4: Arizona Ground Motion Data and Issues ................................................................................. 10 Topic 5: California Ground Motion Data and Issues .............................................................................. 11 Topic 6: Fragile Geological Features ...................................................................................................... 12 Topic 7: Reference Conditions ............................................................................................................... 12 Topic 8: Addressing Sigma for SWUS GMC ............................................................................................ 13 Focused questions submitted to Workshop #1 Presenters ........................................................................... 13 GROUND MOTION CHARACTERIZATION PRESENTATIONS ................................................................................. 21 TECHNICAL INTEGRATOR TEAM SUMMARIES and ACTIONS .............................................................................. 23 LETTER COMMENTARY FROM THE PARTICIPATORY PEER REVIEW PANEL ........................................................ 41 TECHNICAL INTEGRATION TEAM LEAD RESPONSES TO PARTICIPATORY PEER REVIEW PANEL COMMENTS .... 45 REFERENCES ........................................................................................................................................................ 50 Page v Southwestern United States Ground Motion Characterization SSHAC Level 3 WORKSHOP #1 PROCEEDINGS WORKSHOP #1 INTRODUCTION Pursuant to the Request for Information put forth on March 12, 2012 by the United States Nuclear Regulatory Commission in response to the Near-Term Task Force’s (NTTF) evaluation of the Fukushima Dai-ichi accident, Pacific Gas and Electric Company (PG&E), Southern California Edison (SCE), and Arizona Public Service (APS) are co-sponsoring a joint Southwestern U.S. (SWUS) Ground Motion Characterization (GMC) SSHAC Level 3 study for the Diablo Canyon Power Plant (DCPP), the San Onofre Nuclear Generating Station (SONGS), and the Palo Verde Nuclear Generating Station (PVNGS). This is the first out of three Workshops that will be conducted in accordance with the applicable SSHAC Level 3 guidelines. Purpose: The specific goals of Workshop #1 are to: 1) Review the ground rules for the conduct of SSHAC workshops and expert roles within the project 2) Identify the technical issues of highest significance to the hazard analysis. 3) Review available data that will be considered for constructing the GMC model; this includes identification of data, information and/or additional work to be done on the continuing development of the project to address those issues. It will also address the evaluations to be performed in the period leading up to Workshop #2 Approach: The goals of the Workshop have been accomplished by a series of presentations and discussions designed to provide the Technical Integration (TI) team with information pertaining to: (1) assessment of the main ground motion and uncertainty contributors to the ground motion shaking hazard at the three sites of interest, and (2) discussion on the availability, applications, and limitations of the available data. Presentations are also to address the new data collection efforts currently underway and those that will be completed throughout the next two years to support this SSHAC project. All the presentations are part of the project record. At this stage of the project, the focus is on identifying the data that are available to address the hazard- significant technical issues. Interpretation of the available data in terms of alternative models or implications to the seismic hazard at the site is to be avoided; this will be the focus of Workshop #2. Speakers have been provided with detailed guidance by the TI Lead to ensure that the presentations are oriented to the goals of the project and Workshop. When inclusion of interpretations cannot be avoided, the speakers have been asked to identify biases or limitations in the interpretation process. Page 1 2 Southwestern United