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11/27/2012 11:02 AM EST
By Sean Sheldrake, Rob Pedersen, and Alan Humphrey In our previous blog posts we've talked about how EPA diving scientists support cleanups in the nation's waterways through collection of samples. In this post, we'll talk about miniature wells called "piezometers" that we and other divers place underwater. What is a piezometer and what is it doing [...]