Series 8 – Groundwater Contamination: The Heavy-weight Guys

Jun 2, 2020

This is the eight in a series of light, short and visual talks on taking control of environmental-risk concerns that haunt otherwise lucrative transactions in commercial and industrial properties, and even residences.

“DNAPL” (Dense Non-Aqueous Pollutant Liquid, pronounced dee-napl) is just a name, not unlike Mary or Joe that we use in the  environmental lingo do denote substances that are heavier than water and, therefore, they sink in water. Colloquially, we call them sinkers.

PCE, also known as Perc, Perchloroethylene, Perchloroethene, Tetrachloroethene, and some other names, is a dry-cleaning solvent and industrial degreaser, and is heavier than water.

PCE is a DNAPL, a “sinker,” and it gives us hard time puling it out from groundwater, becaue, once it has reached an aquifer, it will sink all the way down; and aquifer is not a lake, it is earth material soaked with water that can be hundreds of feet deep.


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