1. Joint BARCfirst-BENS-BRMA Infrastructure Symposium June 25, 2009

2. Hayward Fault parallel to BART and crosses BART. 1868 last major rupture of Hayward Fault (130- to170-year return cycle). Four earthquake scenarios most likely to damage BART: 7.0 Hayward Fault 8.0 San Andreas Fault 6.7 Concord Fault 6.7 Calaveras Fault Bay Area Faults and BART

3. Retrofit Locations 3 Lafayette Transbay Tube and Associated Structures 22 Miles of Aerial Guideways 19 BART Stations 4 Train Maintenance Yards Parking, Operations and Administration Structures Power, Mechanical, Train Control and Communications Equipment 1 BART-Owned SF Muni Facility

4. Aerial Guideway Vulnerability Foundations too Small Potential for Crumbling of Columns, Similar to Cypress Freeway Total of 1,918 Aerial Guideway Supports

5. Strengthen Foundations Jacket Columns (10-15%) Add Shear Keys (10-15%) Aerial Guideway Retrofit Concepts Life SafetyOperability Add Piles (Where Appropriate) Similar Station Retrofits

6. Engineering Earthquake Response Team

7. SERA Analysis

8. Questions & Answers BART is Committed to Safeguarding Bay Area Transportation and Economic Well-Being Community Relations Manager: Catherine Westphall 510-464-7595