1. Region 8 Office of Partnerships and Regulatory Assistance, Air Program, Indoor Air, Toxics, and Transportation Unit; U.S. Environmental Protection Agency; Denver CO USA
2. Office of Research and Development, Computational Exposure Division; U.S. Environmental Protection Agency; Research Triangle Park NC USA
3. Office of Air Quality Planning and Standards, Air Quality Assessment Division; U.S. Environmental Protection Agency; Research Triangle Park NC USA
4. Institute of Artic and Alpine Research; University of Colorado Boulder; Boulder CO USA
5. Bingham Research Center; Utah State University; Vernal UT USA
6. Department of Chemistry and Biochemistry; Utah State University; Vernal UT USA