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http://www.startribune.com/local/50376382.htmlEast metro residents who drank water tainted with 3M chemicals have retained trace levels of those compounds in their blood, according to a new state health study. Scientists tested blood from 196 volunteers in Lake Elmo, Cottage Grove and Oakdale and found that levels of three compounds were slightly above the national average. Those eligible for the study had to live in areas where private wells or city water was found to be contaminated.
Study participants have been notified of the results, and state health officials will hold two public meetings to explain the findings and to answer other questions.
The compounds, known as perfluorochemicals, were manufactured by 3M in its Cottage Grove plant for more than 50 years until 2002. They were used in Scotchgard, Teflon, firefighting foam and hundreds of other products. The company disposed of wastes in area dumps until the mid-1970s.
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