see:

Farmed Salmon Is Said to Contain High PCB Levels

http://www.nytimes.com/2003/07/30/dining/30WELL.html?ex=1062734400&en=f4feaf
a9f5431377&ei=5070

Highlights:

10 samples of farmed salmon bought at markets on the East and West Coasts
were found to be contaminated with PCB's, or polychlorinated biphenyls, at
an average level far higher than any other protein source, including all
other seafood.

One sample in the farmed salmon study contained levels of PCB's so high that
the environmental agency's advice would be to eat it no more than once every
two months. The remaining nine samples tested exceeded the agency's weekly
recommendation. The salmon tested came from five countries, including Canada
and the United States.


Jay Banks
www.roadtowellsville.com