1. Office of Research and Development, US Environmental Protection Agency, 200 SW 35th Street, Corvallis, Oregon 97330 USA
2. Office of Water, US Environmental Protection Agency, Ariel Rios Building, 1200 Pennsylvania Avenue, NW 4503T, Washington, DC 20460 USA
3. Office of Research and Development, US Environmental Protection Agency, 1200 Pennsylvania Avenue, NW 8623P, Washington, DC 20460 USA
4. Western Center for Monitoring and Assessment of Freshwater Ecosystems, Department of Watershed Sciences and the Ecology Center, Utah State University, Logan, Utah 84322-5210 USA
5. Department of Fisheries and Wildlife, Oregon State University, Corvallis, Oregon 97331 USA
6. Tetra Tech, Inc., 400 Red Brook Blvd., Suite 200, Owings Mills, Maryland 21117 USA
7. Pacific States Marine Fisheries Commission, c/o US Environmental Protection Agency, Western Ecology Division, 200 SW 35th St., Corvallis, Oregon 97333 USA