The research team for the CIEE Project on Diagnostics for Building Commissioning and Operation is grateful to the large number of contributors who assisted in Phase 1. The Phase 1 team also included Kristin Heinemeier (formerly with LBNL, now with Honeywell, Prof. Dale Seborg (UCSB), Prof. S. Haddad (Univ. Santa Clara), and Charlie Huizenga (UC Berkeley). We are grateful to Mike Brambley (Pacific Northwest National Laboratory) and Steve Blanc (Pacific Gas and Electric Company) who met with the research team several times over the course of Phase 1. Valuable feedback and review was also provided by Mark Bailey and Dennis Clough (U.S. Department of Energy). We appreciate the continuing support from CIEE Director Jim Cole, as well as CIEE's Karl Brown and Carl Blumstein. The project also benefited from early conversations with Jeff Haberl (Texas A&M University) and Christie Kjellman (Southern California Edison Company). This work was supported by the California Institute for Energy Efficiency and the Assistant Secretary for Energy Efficiency and Renewable Energy, Office of Building Technology, State and Community Programs of the U.S. Department of Energy under Contract No. DE-AC03-76SF00098. CIEE is a research unit of the University of California. Publication of research results does not imply CIEE endorsement of or agreement with these findings, nor that of any CIEE sponsor.