1. Oak Ridge Institute for Science and Education, United States Environmental Protection Agency, Office of Research and Development, National Center for Environmental Assessment U.S. EPA Washington DC USA
2. U.S. Environmental Protection Agency, Office of Research and Development, National Center for Environmental Assessment U.S. EPA Washington DC USA
3. U.S. Environmental Protection Agency, Office of Research and Development U.S. EPA Durham NC USA
4. Oregon Department of Environmental Quality Portland OR USA
5. National Institute of Food and Agriculture United States Department of Agriculture Washington DC USA
6. Department of Land, Air and Water Resources University of California Davis CA USA
7. Terra Analytics Helena MT USA
8. Western Ecology Division, Office of Research and Development U.S. Environmental Protection Agency Corvallis OR USA