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Browsing the "USGS" Tag

USGS: Coal-Tar Sealant Is Primary Source Of PAH Contamination In Milwaukee Streams (Implications For Other Regions)

December 31st, 2016 | by James Ayre

While this shouldn't be surprising to anyone who has smelled the stuff when it's being applied, coal-tar-based sealants used on pavement are the primary source of toxic polycyclic aromatic hydrocarbons (PAHs) in streambed sediments in Milwaukee, Wisconsin, according to a new study from the US Geological Survey and the Milwaukee Metropolitan Sewerage District

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