Washington plutonium leak poses 'long-term threat'
[link to www.cbc.ca]

[snip]

Over the years, more than a million gallons of radioactive waste have already leaked into the ground at Hanford.

Carpenter said plutonium has already been detected in local fish stocks and worries that if changes don't come soon, wild salmon stocks could be next.

He said his organization is now asking the U.S. Congress for help.