1. Technology Fellow, Jacobs Engineering, Inc., 2001 Market St., Suite 900, Philadelphia, PA 19103 (corresponding author).
2. Technologist, Jacobs Engineering, Inc., 1100 NE Circle Blvd., Suite 300, Corvallis, OR 97330.
3. Laboratory Manager, Pittsburgh Mineral and Environmental Technology, 700 5th Ave, New Brighton, PA 15066.
4. Principal Geochemist, Jacobs Engineering, Inc., 2485 Natomas Park Drive, Suite 600, Sacramento, CA 95833.
5. Senior Project Manager, Chemical Engineer, US Environmental Protection Agency, 290 Broadway, New York, NY 10007.
6. Project Manager, Jacobs Engineering, Inc., 500 7th Ave, New York, NY 10018.