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Dust swept from coal-tar-sealed parking lot pavement

Detailed Description

Dust swept from parking lots sealed with coal-tar-based sealant contains concentrations of polycyclic aromatic hydrocarbons (PAHs) about 1,000 higher than dust from parking lots with other surface types (concrete, unsealed asphalt, asphalt-based sealcoat). Coal-tar-based sealcoat is predominantly used east of the Continental Divide. Read more about coal-tar-based sealcoat and PAHs here.


Public Domain.