November 08, 2011 at 4:00 am

In recent months, massive clean-up operations and environmental studies have begun on four of the most polluted waterways in the U.S.: the Hudson River, Passaic River, Gowanus Canal and Newtown Creek. MetroFocus looked at how exactly the responsible parties plan to clear our waters of the PCBs, DDTs and all manner of other toxins polluting them.

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