ACKNOWLEDGMENTS

The authors wish to thank the Federal Highway Administration (FHWA) for funding this project. The authors appreciate technical comments made by Kevin Black and others at FHWA, and the contribution of the publications group and administrative staff at Sonoma Technology, Inc (STI).

As part of the process for identifying and prioritizing the research issues for the transportation community, STI, together with Dr. Nigel Clark of West Virginia University, Dr. Peter McMurry of the University of Minnesota, and Dr. Arthur Winer of the University of California at Los Angeles, hosted a particulate matter (PM) research needs workshop on April 7, 2005, for FHWA. The workshop's success was due in great measure to the energetic and talented support provided by a number of the participants who took on leadership roles during the day. On behalf of the entire study team and FHWA, STI extends its appreciation to the following individuals for their workshop assistance; the workshop findings were an important contributor to the development of the strategic plan for PM research:

• Workshop Presenters
  • Kevin Black, FHWA
  • Nigel Clark, West Virginia University
  • Chris Klaus, North Central Texas Council of Governments
  • Peter McMurry, University of Minnesota
  • Mike Savonis, FHWA

• Breakout Session Facilitators
  • Stephen Cadle, General Motors
  • Lisa Graham, Environment Canada
  • Chris Klaus, North Central Texas Council of Governments

• Breakout Session Note Takers
  • Chad Bailey, U.S. Environmental Protection Agency
  • Tim Belian, Coordinating Research Council
  • Hilary Hafner, STI
  • David Lax, American Petroleum Institute
  • Paul Roberts, STI
  • John Watson, Desert Research Institute

In addition, STI especially thanks Dr. Arthur Winer, who generously accepted the challenge to moderate the presentation of breakout session findings and to extemporaneously synthesize the workshop's main themes.

Finally, STI thanks all workshop participants for their individual contributions. Participants came to the workshop with important ideas, questions, and insights that allowed the study team and FHWA to better understand priority research needs related to transportation and PM (Appendix A includes a complete listing of the workshop participants).