Hazardous substances refer to a wide array of contaminants that are regulated under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA). These substances include hazardous waste and chemical contaminants but exclude petroleum products due to a specific exemption.
Lead is a toxic metal once commonly used in construction materials such as plumbing pipes and paint, but now it is identified as a hazardous substance. Its presence in property necessitates special disclosures during transactions.
