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St. Paul, Minn.

Award-winning reporter Hedrick Smith on water pollution

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MPCA storm water pond testing
Alex Levchuk and Dale Thompson, with the Minnesota Pollution Control Agency, took sediment samples from a Woodbury pond. They're looking for runoff from asphalt sealer that's thought to be an emerging pollution problem.
MPR Photo/Tim Nelson
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MPCA storm water pond testing
Alex Levchuk and Dale Thompson, with the Minnesota Pollution Control Agency, took sediment samples from a Woodbury pond. They're looking for runoff from asphalt sealer that's thought to be an emerging pollution problem.
MPR Photo/Tim Nelson
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