Editorial – Remember lakes when repairing your driveway

June 7, 2012 at 7:00 pm in Alexandria Echo Press

Seal coating makes old asphalt look new and protects its surface, but there are serious environmental concerns with its use. Seal coat comes in two basic varieties: coal tar-based and asphalt-based. The coal tar variety is more resilient, but it contains much higher levels of a class of chemicals called PAHs (polycyclic aromatic hydrocarbons) that harm fish, and with prolonged exposure, pose a risk of cancer in humans. Continue Reading