This 2012 DNR document shows Shaw Group (new name now) did a simulation study on migration of chloride from the Bayou Corne sinkhole into Mississippi River Alluvial Aquifer and it showed the aquifer getting contaminated.
The study has charts showing the water levels all around Lake FUBAR and beyond.
Also we found this Nov. 2012 report from Isotech showing the amount of methane taken in their samples.
This 2012 DNR map of the area shows how much toxic crud is at risk of getting into the water should there be a big explosion or catastrophe at Lake FUBAR. See east of Lake FUBAR on the map. You can take this 2012 DNR status report and mark it all up with a red pencil.