Massachusetts S645 prohibits the use of coal tar sealers on driveways and parking areas.
Massachusetts S645 bans the application of coal tar sealant products on driveways and parking areas. Coal tar sealant products, which contain at least 20% coal tar pitch, are a major source of polycyclic aromatic hydrocarbons in the environment. Violators face fines of at least $500 for a first offense, $1000 for subsequent offenses, or imprisonment in the house of correction for up to one year. The law takes effect on January 1, 2026.
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