1. Department
of Earth Sciences, University of Toronto, Toronto, Ontario, M5S 3B1, Canada
2. DuPont Engineering
and Technology, Wilmington, Delaware 19803, United States
3. The Chemours Company,
Corporate Remediation Group, Wilmington, Delaware 19899, United States
4. DuPont Corporate
Remediation Group, Wilmington, Delaware 19803, United States
5. AECOM, Deepwater, New Jersey 02907, United States