Minnesota Public Radio slideshow:
Urban runoff a toxic brew
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Dan Huff of the Friends of the Mississippi River says shopping center ponds like this one in St. Anthony Village do a poor job of treating stormwater. (MPR photo/Dan Olson)

Dan Huff of the Friends of the Mississippi River says shopping center ponds like this one in St. Anthony Village do a poor job of treating stormwater.

(MPR photo/Dan Olson)
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