Removal of Polychlorinated Biphenyls from Hillside 140

Removing the source is one of three defenses in depth, as illustrated at the PCB removal from Hillside 140.
August 1, 2013
Men vacuuming PCB contamination from Hillside 140 using large pipes and pullies

Vacuuming PCB contamination from Hillside 140

Water and sediment is sampled periodically for contaminants. If PCB waste is present, it is shipped to licensed disposal facilities.

Two cleanups of radioactive materials were completed in the 1970s and 1980s following the standards of the day. Polychlorinated biphenyls (PCBs) were not then regulated.

In 2008, LANL accelerated the cleanup of PCBs directly south of residences in the town site. Project managers had dozens of meetings with residents and took hundreds of samples.

Workers shoveled, picked, and vacuumed PCB waste from the steep hillside. Rocks that did not fit in the vacuum hoses were zipped on wires to the canyon bottoms. The project removed over 1400 cubic yards of waste.

Two catchment basins were installed in the canyon bottom above the streambed to catch runoff.

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