Environmental

Polychlorinated biphenyls (PCBs) in older Pennsylvania buildings are typically found in:

ALead paint on walls and trim
BOlder electrical transformers, fluorescent light ballasts, and caulking materials✓ Correct
CRadon-emitting granite countertops
DAsbestos pipe insulation only

Explanation

PCBs were widely used in electrical equipment (transformers, capacitors), fluorescent light ballasts manufactured before 1978, and some building caulking materials. Pennsylvania's older commercial and industrial buildings may contain PCB-containing materials requiring special handling and disposal during renovation.

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