1. National Exposure Research Laboratory (NERL); U.S. Environmental Protection Agency; Cincinnati Ohio USA
2. National Center for Environmental Assessment (NCEA); U.S. Environmental Protection Agency; Washington D.C. USA
3. NCEA; U.S. Environmental Protection Agency; Cincinnati Ohio USA
4. NERL; U.S. Environmental Protection Agency; Las Vegas Nevada USA
5. North Carolina Chapter; The Nature Conservancy; Durham North Carolina USA
6. Office of Water; U.S. Environmental Protection Agency; Washington D.C. USA