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Washington Savannah River Company, LLC provides environmental cleanup, nuclear waste collection and disposal, and remediation services. The company was formerly known as Westinghouse Savannah River Company LLC, changing its name to Washington Savannah River Company, LLC in September 2005. The company was founded in 1989 and is based in Aiken, South Carolina. The new firm assumed the operation of the Savannah River Site from DuPont who had built and run the plant from 1950. Washington Savannah River Company, LLC operates as a subsidiary of Westinghouse Government Services Company LLC.