Starting in 2010, David began monitoring an issue with the FPL Turkey Point cooling canals, in which it appeared that hyper-saline water in the canals was sinking into the ground water. Over the years the saline water in the canal became more concentrated, and the heavy salt water sank through the porous rock until it hit hard bedrock and migrated to the aquifer. In 2016, high levels of a radioactive isotope linked to the water from the Turkey Point cooling canals was found in the Biscayne Bay, confirming suspicions that Turkey Point’s aging canals were leaking into the nearby national park and threatening the community’s drinking water. David continues to work with a variety of governmental, environmental and neighborhood groups today.