By Carrie Saldo
http://stream.publicbroadcasting.net/production/mp3/wamc/local-wamc-537682.mp3
Pittsfield, MA – Massachusetts health officials say PCB test results from air samples taken at a Pittsfield elementary school showed low levels of the chemical, a probable cause of cancer. But the official don't see a cause for worry. WAMC's Berkshire Bureau Chief, has this report;