1. School of Sustainable Engineering and The Built Environment; Arizona State University; Tempe Ariz.
2. National Water Quality Laboratory; US Geological Survey; Denver Colo.
3. US Geological Survey, Central Midwest Water Science Center; Iowa City Iowa
4. Office of Research and Development; US Environmental Protection Agency; Cincinnati Ohio
5. Mississippi State Chemical Laboratory, Mississippi State; Miss.
6. Department of Engineering Technology and Construction Management; University of North Carolina Charlotte; Charlotte N.C.