Monday , 26 September 2016

DNR TO STUDY IF FRAC SAND MINING CONTAMINATES GROUNDWATER

The Wisconsin Department of Natural Resources is planning a study to see if frac sand mining is causing heavy metals to leach into the state’s groundwater. DNR frac sand sector specialist Roberta Walls said the agency sampled water used to wash frac sand at 13 mines in western Wisconsin in 2013. They found aluminum, copper, arsenic and lead at elevated levels. “And we are seeing presence of those in the process water ponds,” Wall said, “to the extent and degree (that) those are the types of things that we need to take a closer look at.” The metals appear to be part of the natural makeup of the clay “cement” that holds together certain sandstone formations. The mining process can break up or disturb that clay and Walls said the agency wants to to see if frac sand wash water is carrying those metals into groundwater supplies. http://www.wpr.org/dnr-study-if-frac-sand-mining-contaminates-groundwater

 

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