The state Department of Natural Resources is planning to study whether heavy metals from ponds at Wisconsin frac sand mines are leaching into and contaminating groundwater. The study comes three years after water samples from some frac sand mine ponds showed concentrations of metals many times higher than state groundwater standards recommend. ...more | ||
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Our Sponsors - - Volume: 4 - WEEK: 45 Date: 11/1/2016 10:38:01 AM - |