Environmental

A Mississippi buyer of a 1960s commercial building wants to know if it contains PCBs (polychlorinated biphenyls). PCBs were commonly used in:

AInsulation and roofing materials
BElectrical transformers, capacitors, fluorescent light ballasts, and caulking materials in buildings constructed or renovated before 1979✓ Correct
CPlumbing pipes and fixtures
DConcrete and masonry products

Explanation

PCBs were widely used in electrical equipment (transformers, capacitors), fluorescent light ballasts, and caulking/sealants in commercial buildings built or renovated before their ban in 1979 (Toxic Substances Control Act). Buildings from the 1960s may have PCB-containing caulk, especially around windows and expansion joints.

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