Saturday , 18 November 2017

DNR TO STUDY POSSIBLE LINK BETWEEN FRAC SAND MINES, CONTAMINATED GROUNDWATER

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. Areas like a section of land outside Arcadia, where the Tunnel City and Wonewoc sandstone formations meet, are especially rich in minerals containing heavy metals, according to Wisconsin Geological and Historical Survey geologist Jay Zambito. The minerals keep metals locked inside the rock formations, Zambito said. His theory is that when miners break up the rock, the minerals might dissolve. “You might be exposing minerals that can easily break down and those minerals — if they have trace metals present and those trace metals get into the water — the surface water then becomes poor quality and then it interacts with the groundwater, the groundwater then becomes lesser quality,” said Zambito. http://host.madison.com/wsj/news/local/environment/dnr-to-study-possible-link-between-frac-sand-mines-contaminated/article_b7d4d869-2f19-511a-9cd7-f838b1690d40.html?utm_medium=social&utm_source=email&utm_campaign=user-share

 

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