1. The Charles E. Via, Jr. Department of Civil and Environmental Engineering Occoquan Watershed Monitoring Laboratory Virginia Tech Manassas VA USA
2. Center for Coastal Studies Virginia Tech Blacksburg VA USA
3. Source Molecular Corporation Miami Lakes FL USA
4. Santa Ana Regional Water Quality Control Board Riverside CA USA
5. Department of Forest Resources and Environmental Conservation Virginia Water Resources Research Center Virginia Tech Cheatham Hall Blacksburg VA USA
6. Bren School of Environmental Science and Management Santa Barbara CA USA
7. Department of Earth and Planetary Sciences University of Tennessee Knoxville TN USA
8. Department of Chemical and Environmental Engineering UC Riverside Riverside CA USA
9. Department of Civil and Environmental Engineering UCLA Los Angeles CA USA
10. Orange County Environmental Resources Orange CA USA
11. GSI Environmental Inc. Irvine CA USA