About the Authors

Jill F. Kerrigan

Affiliation Department of Civil, Environmental, and Geo- Engineering, University of Minnesota, Minneapolis, Minnesota, United States of America

Daniel R. Engstrom

Affiliation St. Croix Watershed Research Station, Science Museum of Minnesota, Marine on St. Croix, Minnesota, United States of America

Donald Yee

Affiliation San Francisco Estuary Institute, Oakland, California, United States of America

Charles Sueper

Affiliation Pace Analytical Services Inc., Minneapolis, Minnesota, United States of America

Paul R. Erickson

Affiliation Institute for Biogeochemistry and Pollutant Dynamics, ETH Zurich, Zurich, Switzerland

Matthew Grandbois

Affiliation Department of Chemistry, University of Minnesota, Minneapolis, Minnesota, United States of America

Kristopher McNeill

Affiliation Institute for Biogeochemistry and Pollutant Dynamics, ETH Zurich, Zurich, Switzerland

William A. Arnold

arnol032@umn.edu

Affiliation Department of Civil, Environmental, and Geo- Engineering, University of Minnesota, Minneapolis, Minnesota, United States of America

Competing Interests

CS (and Pace Analytical) had an intellectual contribution in developing the extraction and analytical methods for brominated dioxin analysis. Pace Analytical was paid on a per sample basis for the dioxin analyses from the NSF grant. Co-author CS is employed by Pace Analytical. There are no patents, products in development or marketed products to declare. This does not alter the authors’ adherence to all the PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: WAA DRE DY KM. Performed the experiments: JFK DRE CS PRE. Analyzed the data: JFK DRE DY CS KM WAA. Contributed reagents/materials/analysis tools: JFK DRE DY CS PRE MG. Wrote the paper: JFK DRE DY CS PRE MG KM WAA.