1. Kansas Water Science Center, U.S. Geological Survey Organic Geochemistry Research Laboratory, Lawrence, KS, USA
2. U.S. Geological Survey, Upper Midwest Water Science Center, Mounds View, MN, USA
3. U.S. Geological Survey, National Wildlife Health Center, Madison, WI, USA
4. U.S. National Park Service, Natural Resources Stewardship and Science, Fort Collins, CO, USA
5. Natural Resource Program Center – Wildlife Health, U.S. Fish and Wildlife Service, Bozeman, MT, USA
6. U.S. Geological Survey, Utah Water Science Center, Salt Lake City, UT, USA
7. U.S. Geological Survey, New Jersey Water Science Center, Lawrenceville, NJ, USA
8. U.S. Geological Survey, Eastern Ecological Science Center, Leetown, WV, USA
9. U.S. Army Corps of Engineers, Tulsa District, Tulsa, OK, USA
10. Great Lakes and Ohio River Division, U.S. Army Corps of Engineers, Cincinnati, OH, USA