Study finds dramatic drops in L.A. beach pollution since 1970s
Thursday, May 3, 2012 - 00:21
in Earth & Climate
A USC study finds that concentrations of metal contaminants have fallen as much as 400-fold, compared with research from the 1970s, at popular L.A. beaches since the Clean Water Act became law.Metal contaminants in Southern California coastal waters have plummeted over the last four decades, according to a new study that attributes the cleaner water to 1970s environmental regulations.
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