Relates to the definition of coal tar and its use in pavement products

This bill clarifies the legal definition of "coal tar" used in pavement products under environmental law. It specifies that coal tar includes any thick, black substance derived from coal distillation containing polycyclic aromatic hydrocarbons (PAHs) above 1,000 milligrams per kilogram. The change directly affects pavement manufacturers and environmental regulators by establishing a clear standard for measuring PAH levels in products, ensuring consistency with existing environmental rules. The bill does not create new restrictions but refines how coal tar is identified for regulatory enforcement.