1. Department of Civil and Environmental Engineering; University of California; Berkeley California
2. Department of Surface Waters - Research and Management; Swiss Federal Institute of Aquatic Science and Technology (Eawag); Kastanienbaum Switzerland
3. Institute of Biogeochemistry and Pollutant Dynamics; Swiss Federal Institute of Technology (ETH); Zurich Switzerland
4. Pacific Coastal and Marine Science Center, U.S. Geological Survey; Santa Cruz California