EPA tells schools to test caulk for PCB's

From the WSJ:

http://online.wsj.com/article/SB10001424052748704471504574441240394531858.html

The article discusses a warning by the EPA regarding schools built or renovated between 1950 and 1978. Polychlorinated biphenyls (PBS), which have been linked to a variety of health ailments, were used to make caulk more flexible until 1978, when they were banned.

Aged caulk around windows and doors may now begin to peel, brittle or caulk and, according to the EPA, should be tested for PCB's and removed if there is a significant level of PCB's. According to the article, a NYC public school has been sued over this issue.