Managers of older school facilities should be vigilant about making sure aging fluorescent lighting fixtures are not leaking hazardous chemicals. The U.S. Environmental Protection Agency says that fluorescent ballasts manufactured before 1979 may contain polychlorinated biphenyls (PCBs), which Congress banned in 1979 because they pose health risks. Research had determined that exposure to high levels of PCBs may lead to a variety of health problems, including cancer. “Any ...

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