The Acknowledgment section has been updated and revised to reflect the contribution of each of the members of the Earth 182A Group more appropriately. This correction does not affect any other results or conclusions in our work.
Acknowledgments
We thank Frank Kinnaman for logistical and laboratory support, Tina Treude for use of multicoring equipment on field excursions, the Southern California Marine Institute staff and crew of the R/V Yellowfin for support of our sampling campaign, Ben Tradd for broaching the topic of radioactive waste disposal and testing field samples for radioactivity, Helena Heckmann for assistance with gamma spectroscopy at USC, Erin Satterthwaite for pointing us to Cal Salvage’s request for a federal permit for ocean disposal of radioactive waste, John Sullivan for providing access to documents from the Freedom of Information Act, Bob Eganhouse for providing data and reports, Jim McWilliams for advice about model development and water column transport, Sophia Merrifield and Eric Terrill for useful discussions about disposal activities, EPA Region IX staff for pointing us to useful reports and data, Bruce Buchholz for coordinating radiocarbon measurements of barrel-hosted carbonate, Kathleen Ritzman for helping to procure support for this research, Senators Diane Feinstein and Alex Padilla for facilitating the congressionally directed appropriation that funded the laboratory analyses, and the anonymous donor whose financial support enabled our field efforts. The Earth 182A Group consisted of students and participants in a multiquarter course sequence at the University of California, Santa Barbara. Each member of this group participated in oceanographic sampling expeditions that provided the samples for this paper and participated in regular discussions about the work, contributing as a collective to the design of the work and interpretation of the results. The Earth 182A Group members include Chiara C. Corbo, Danielle D. Cox, Kelsey M. Gosselin, Marianna Karagiannis, Sebastian J. E. Krause, Sara Matsumura, Kyla R. Murphy, Jim M. Ortiz, Sienna R. Valentine, and Ashley W. Yeow.