CORRECTION: Our November 19 article, “How Clean Should Seattle’s Only River Be?”suffered from a number of errors: The EPA’s proposed cleanup plan would cost $305 million, not $400 million; the amount of money the Lower Duwamish Waterway Group has so-far spent on studies and early cleanups is $190 million, not $40 million; Bob Perciasepe’s title is deputy administrator of the EPA, not assistant administrator; Norm Dicks served as the ranking member of the House Appropriations Committee, not the chairman. Also, due to an error in translation, the story quoted John Ryan as saying that the dredging plan championed by the Cleanup Coalition would triple the truck traffic in the affected neighborhoods compared to the more modest EPA plan. Ryan actually said that the impact would be more than double. The story has been corrected online. We regret these errors.