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This product is illegal in many states

Coal Tar sealcoating is the most common product used to seal pavement and asphalt surfaces primarily because of its availability and overall ease of application, when properly applied and handled correctly, this is the most cost effective product available. But when Coal Tar is mishandled and applied incorrectly it can be a very hazardous to the environment.

Coal Tar based sealcoat has very high concentrations of polycyclic aromatic hydrocarbons (PAHs) and can affect the quality of groundwater. Small particles of coal tar sealcoat can flake off of the surface of the pavement by car tires and wash into small streams by rain water runoff. If coal tar is applied and is washed off from rain, then it will likely wash into surrounding streams as well and this can affect our drinking water not to mention any aquatic life in small streams and ponds.

A recent study was performed in Texas by the National Water-Quality Assessment Program and the city of Austin where they determined that PAHs are an environmental concern because PAHs are toxic to aquatic life and are suspected human carcinogens. The study found that particles in runoff from coal tar seal coated parking lots had PAH concentrations up to 65 times higher that surfaces not using sealcoating.

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