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In a joint SCEC-PEER project that is now nearing completion, the PI’s, in collaboration with Professor Allin Cornell of Stanford University, have developed the capability to perform probabilistic vector-valued hazard calculations, and applied that capability to evaluation of the nonlinear dynamic response of the Van Nuys Holiday Inn, one of the PEER Testbeds for Performance Based Seismic Engineering. The use of vector-valued hazard is expected to improve the accuracy and the efficiency of prediction of building response. The project is being performed within the context of the PEER PBE Methodology Testbed Program, specifically, the Van Nuys Holiday Inn Testbed. In this program, ground motions are being specified using the conventional scalar-valued hazard approach. The goal of this project is to concurrently test the application of vector-valued hazard to this project, and compare its efficacy with that of the standard scalar-valued hazard approach.