Dredging Debate

http://www.clearwater.org/news/dredging.html
This is a website that is run by Hudson River Sloop Clearwater, Inc. They are an organization geared towards creating a cleaner environment for the next generations. They have based themselves on the Hudson because of its ecological importance. The link shows their views of dredging the Hudson River to remove the PCB's. From their perspective the dredging used to clean the Hudson will be controlled and precise. On the website they also mention the advertisements that General Electric has created. These commercials present the negative aspects of dredging the Hudson. Since General Electric will take the brunt of the cost in dredging these areas, many believe they created these commercials to scare the public living on the river from voting for dredging.
I have seen a few of these commercials in years past. However, recently, General Electric has agreed to dredge and now even supports the dredging on their site: http://www.ge.com/en/citizenship/ehs/remedial/hudson/agreement.htm
It is interesting to see how they have changed their stance about dredging over the last five or so years. I am wondering if this new compliance has anything to do with their 'ecomagination', environmentally friendly, campaign. It would be detrimental to this 'green' image if they were refusing to cleanup chemicals their past factories dumped into the Hudson. Maybe the cost of dredging is less than the potential cost of bad publicity.