An Act amending the act of October 18, 1988 (P.L.756, No.108), known as the Hazardous Sites Cleanup Act, in preliminary provisions, further providing for definitions.

SB 611 amends Pennsylvania's Hazardous Sites Cleanup Act by updating the definition of "hazardous substance" to explicitly include specific perfluorinated chemicals (like PFOA and PFOS) and their equivalents. This change directly affects entities responsible for cleaning up contaminated sites, as these newly listed chemicals will now trigger the Act's cleanup requirements. The bill also clarifies that petroleum, natural gas, and certain coal combustion wastes remain excluded from the definition. This definition update ensures consistent application of cleanup standards for these chemicals under the Act.