FILE &#8211; In this Oct. 7, 2009 file photo, crews dredge a section of the Hudson River in Fort Edward, N.Y. Dredging began in the spring of 2009 after decades of argument over how to deal with tons of PCBs that flowed down the river after a dam in the area was removed. General Electric plants in Fort Edward and neighboring Hudson Falls discharged wastewater containing PCBs. A highly anticipated assessment of General Electric&#8217;s six-year cleanup of the Hudson River is scheduled to be released by the federal Environmental Protection Agency on Thursday, June 1, 2017. Elected officials who want more pockets of the upper river dredged hope the analysis strengthens their argument. (AP Photo/Mike Groll, File)