1. Geomatrix Consultants, 2101 Webster St., 12th Floor, Oakland, CA 94612
2. California Department of Transportation, Office of Infrastructure Research, 5900 Folsom Blvd, MS-5, Sacramento, CA 95819
3. Pacific Gas & Electric Company, Geosciences Department, 245 Market St., Rm. 403, PO Box 770000, MC N4C, San Francisco, CA 94177
4. Pacific Earthquake Engineering Research Center, University of California, 325 Davis Hall, MC1792, Berkeley, CA 94720