clear environmental

Via ScienceDaily

Coal Tar seal coats – the shiny black material applied to many parking lots and driveways – are high in PHAs, which contribute to pollution in many of the nation’s urban lakes.  PAHs are toxic to aquatic life and several are suspected carcinogens.

ScienceDaily (Nov. 22, 2008) — Dust collected from coal-tar sealcoated parking lots in Central and Eastern U.S. cities contains concentrations of  polycyclic aromatic hydrocarbons (PAHs) that are about 1,000 times greater than levels found in Western cities where coal-tar sealcoat is less commonly used, according to a U.S. Geological Survey (USGS) study recently published in the journal Environmental Science and Technology … CONTINUED