aluminum smelter

Alcoa Seeks to Dredge Toxic Sediment from Columbia River

Article: Alcoa Seeks to Dredge Toxic Sediment from Columbia River

VANCOUVER, Washington, February 15, 2008 (ENS) – Alcoa submitted its formal request to the U.S. Army Corps of Engineers for permission to dredge portions of the Columbia River at Vancouver, Washington starting this fall. The dredging project will remove river sediments contaminated with polychlorinated biphenyls, PCBs, toxic byproducts of more than 40 years of industrial…

Alcoa Will Dredge Columbia River for Toxic Sediments

Article: Alcoa Will Dredge Columbia River for Toxic Sediments

OLYMPIA, Washington, December 10, 2007 (ENS) – The Washington State Department of Ecology Friday announced an agreement with Alcoa that has the aluminum giant cleaning up more than 95 percent of polluted sediments from the Columbia River next fall. The agreement will be finalized when the cleanup action plan, being developed this winter, is complete.…