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Yale Environment 360: Filtering polluted runoff from urban areas through a simple soil mixture dramatically reduced the water's toxic metal and hydrocarbon content and made it safe for coho salmon and the insects they eat, according to new research. Scientists collected polluted runoff from a four-lane highway in Seattle, then filtered part of the water through a mixture of sand, compost, and shredded bark. Coho salmon and aquatic insects thrived in the filtered stormwater, but they quickly died in the unfiltered water,......
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Filtering Polluted Stormwater Through Soil Can Protect Salmon, Study Shows
Posted by Washington Post: Juliet Eilperin on January 21st, 2015
Posted in Water Conservation