1. St.
Croix Watershed Research Station, Science Museum of Minnesota, Marine on
St. Croix, Minnesota 55047, United States
2. Department
of Marine Sciences, University of Connecticut, Groton, Connecticut 06340, United States
3. Department
of Geology and Geophysics, Yale University, New Haven, Connecticut 06520, United States
4. Department
of Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, United States
5. INRS-ETE, Université du Québec, Québec City, Québec G1K9A9, Canada
6. Minnesota Pollution Control
Agency, St. Paul, Minnesota 55155, United States
7. Metropolitan
Council
Environmental Services, St. Paul, Minnesota 55106, United States