Sunday, April 4, 2021 - 5:03 pm
MASSENA – The U.S. Environmental Protection Agency (EPA) announced that in-river work will resume next month to clean up sediment contaminated with polychlorinated biphenyls (PCBs) at the Grasse River Superfund Site, also known as the “Alcoa Aggregation.”
The EPA, state Department of Environmental Conservation, and the Saint Regis Mohawk Tribe continue to work together on the project.
In 2013, EPA selected a cleanup plan for the site that called for dredging and capping of PCB‐contaminated sediment in a 7.2‐mile stretch of river.
The 2021 work will primarily include placement of a 12-inch sand, gravel and/or stone cap in the lower five miles of the main river channel from the Route 131 Bridge to the mouth of the Grasse River, covering over 200 acres; sand backfilling in areas dredged in 2020 near Snug Harbor; and habitat reconstruction throughout the site.
Watertown Daily Times
A barge loaded with capping materials arrives at the in-water remediation site in 2019 on the Grasse River in Massena.
(Provided photo â Christopher Lenney, Watertown Daily Times) MASSENA Environmental remediation work spanning decades is continuing this month on the Grasse River in Massena. The U.S. Environmental Protection Agency on Tuesday announced the in-river work at the Alcoa Aggregation Superfund Site will resume in April. The site is a collection of properties owned and maintained by the former Aluminum Company of America, Alcoa, which changed its name to Arconic in 2016, and split into Howmet Aerospace Inc. and a subsidiary, Arconic Corporation, last year.
MASSENA â Environmental remediation work spanning decades is continuing this month on the Grasse River in Massena.
The U.S. Environmental Protection Agency on Tuesday announced the in-river work at the Alcoa Aggregation Superfund Site will resume in April. The site is a collection of properties owned and maintained by the former Aluminum Company of America, Alcoa, which changed its name to Arconic in 2016, and split into Howmet Aerospace Inc. and a subsidiary, Arconic Corporation, last year.
Howmet Aerospace is now responsible for implementing several plans developed by the EPA, state Department of Environmental Conservation and St. Regis Mohawk Tribe to address the legacy of industrial contaminants in the area.
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