EARTHQUAKE HAZARDS PROGRAM Shear – and Compressional- Wave Velocity Measurements from Two 150-m- Deep Boreholes in Seattle, Washington, USA By Jack K. Odum 1 , William J. Stephenson 1 , Kathy Goetz-Troost 2 , David M. Worley 1 , Arthur D. Frankel 1 , Robert A. Williams 1 , and Jake Fryer 2 1 United States Geological Survey, 1711 Illinois St., Golden, CO 80401 2 University of Washington, Seattle, WA 98195-1310 Open-File Report 2004- 1419 Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government U.S. Department of the Interior U.S. Geological Survey