That was the interesting part of the study of the three schools. The ballasts are intact and functioning just fine. But the PCBs are slowly leaking out. That's been establilshed. I guess when EPA continued to allow PCBs in "completely enclosed systems" after 1977, they did not realize that "enclosure" is not an eternal condition. Monona
In a message dated 1/10/2011 3:45:04 PM Eastern Standard Time, dmdecker**At_Symbol_Here**UCDAVIS.EDU writes:
And I=E2=80=99m wondering why they were testing for PCBs. Did a lighting ballast fail? Why replace all the lighting if it=E2=80=99s all intact and working fine? Are the elevated PCBs directly attributable to lighting? There are other sources, principally in caulk.
They probably should retrofit the lighting to energy efficient fixtures and the like, as a matter of good stewardship of their utility dollars. But I=E2=80=99m with Pat =E2=80=93 I think there=E2=80=99s a lot of information missing to go leaping to these types of conclusions.
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