1. Utah Department of Environmental Quality, Salt Lake City, Utah 84116, United States
2. Chemical
Sciences Division, Earth System Research Laboratory, National Oceanic and Atmospheric Administration, Boulder, Colorado 80305, United States
3. Department
of Soil, Water, and Climate, University of Minnesota, St. Paul, Minnesota 55108, United States
4. Civil
and Environmental Engineering Department, Utah State University, Logan, Utah 84322, United States
5. Environmental Protection Agency Region VIII, Denver, Colorado 80202, United States
6. Department
of Physics, Weber State University, Ogden, Utah 84408, United States