The agreements go a long way in specifying the action required to clean up these sites and identifying who should be doing it, but they don't really get to the commitment from the various parties involved that they will do it by a certain date.
In the majority of these sites there are two issues causing most of the problems: contaminated sediments and overloaded municipal treatment works. Those issues are well understood. I don't think it's a scientific capacity issue there, frankly.