1. U.S. EPA, Mid-Continent Ecology Division, 6201 Congdon Boulevard, Duluth, Minnesota 55804, United States
2. U.S. Geological Survey, South Atlantic Water Science Center, 720 Gracern Road, Columbia, South Carolina 29210, United States
3. U.S. EPA, National Center for Computational Toxicology, 109 T.W. Alexander Drive, Research Triangle Park, North Carolina 27711, United States
4. Attagene, Inc., 7020 Kit Creek Road, Suite 260, Morrisville, North Carolina 27560, United States
5. Badger Technical Services, 6201 Congdon Boulevard, Duluth, Minnesota 55804, United States