The Environmental Protection Agency has proposed launching a $36 million project to clean up a massive deposit of DDT that sits 200 feet underwater off the California coast near San Pedro. The site, representing the world's largest deposit of the banned pesticide, was created when Montrose Chemical Corp. released 110 tons of DDT and 10 tons of PCBs into sewers from 1947 through 1971, and the EPA's cleanup plan would involve capping the contaminated 320 acres with silt and sand.

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