Polychlorinated biphenyls (PCBs) are a legacy hazardous material found in many Long Island commercial and industrial properties built before 1979. While most commonly associated with electrical equipment, PCBs were also used in building sealants, caulks, and certain paints during the same era. Properties undergoing renovation, environmental assessment for sale, or compliance audits may encounter PCB contamination that requires regulated remediation.
Where PCBs Are Found in Long Island Buildings
In older commercial buildings, the most common PCB sources are transformer oil in electrical equipment, caulking around windows and expansion joints (particularly in concrete and masonry construction from the 1950s through 1970s), and in floor tiles in some institutional buildings. PCBs can also migrate from contaminated soil beneath a building into the structure through vapor intrusion — a concern for properties in industrial areas with documented soil contamination.
Federal and New York State Regulations
PCBs are regulated under TSCA (Toxic Substances Control Act) at the federal level and under NYSDEC regulations at the state level. Materials containing PCBs at concentrations above 50 parts per million are classified as regulated PCB materials requiring specific handling, remediation, and disposal procedures. Renovation or demolition of buildings containing regulated PCB caulking or sealants must follow EPA’s PCB Cleanup Policy and submit notifications to the appropriate regulatory agencies before work begins.
The PCB Remediation Process
PCB remediation for building materials typically involves bulk removal of contaminated caulk or sealant, cleaning of adjacent concrete or masonry surfaces that have absorbed PCBs through contact, soil testing if building demolition is involved, and disposal at a TSCA-permitted facility. PCB-containing electrical equipment requires different handling — decontamination or disposal procedures depend on the PCB concentration in the equipment fluid.
Property Transaction Implications
PCB contamination discovered during pre-sale environmental assessment can delay or complicate commercial property transactions. Buyers and lenders want confirmed remediation before closing. Understanding the typical remediation timeline — often 3 to 6 months for building caulk remediation — is important for transaction planning. Properties with documented PCB issues should engage an environmental professional early in the transaction process to avoid closing delays.
Frequently Asked Questions
How do I know if my Long Island commercial building has PCB caulking?
The primary indicator is construction date. Buildings with concrete or masonry construction completed between approximately 1950 and 1979 are candidates for PCB caulking testing. A qualified industrial hygienist can collect caulk samples for laboratory analysis. Testing is the only way to confirm the presence and concentration of PCBs.
