They are choosing not to treat it. The City of Detroit is building a full-scale vitrification treatment facility on the shore of the Detroit River, via Minergy Process. This is to be used for sludge from the WWTP, and not available for sediment use, so the City has told us. The citizens are aware of the USGS report on the Grassy Island CDF in the Detroit River and its problems. The USGS recommended decommissioning the now Wildlife Refuge and removing its contamination, about 3 million cubic yards worth.
Grassy Island is in the citizens front yard.
Thus their contention that CDFs are not safe is born from this experience. A CDF is very much a leaky landfill, on water. We have one right on the Detroit River, BASF Riverview. We have given 4 public presentations on our research to date in the past year. Minergy Technology in the Detroit River either later this year or next.