1. Department of Geological Sciences, San Diego State University, San Diego CA 92182
2. URS Corporation, 566 El Dorado Street, Pasadena CA 91101
3. Department of Civil and Environmental Engineering, Carnegie-Mellon University, Pittsburgh PA 15213
4. Berkeley Seismological Laboratory, University of California, Berkeley, Berkeley CA 94720
5. Lawrence Livermore National Laboratory, Livermore CA 94550