Ray Mangrum’s wealth of experience in the waste-management profession has culminated in a one-of-a-kind river cleanup in Wisconsin that is expected to save as much as $100 million over traditional methods.
Mangrum, 56, directs the world’s largest cleanup to date of polychlorinated biphenyls (PCBs). Advanced technology is driving much of the project. The vice president of remediation for Morris Plains, N.J.-based Tetra Tech EC Inc. recommended the use of computerized mapping, precision dredging and just-in-time processing to remove or cap off 3.8 million cu yd of PCB-polluted sediment along 13.3 miles of the Fox River in Green Bay, Wis.