Published on Thursday, December 1, 2011 by Earth Island Journal

http://www.earthisland.org/journal/index.php/eij/article/what_killed_dunkard_creek/

by Adam Federman

On August 27, 2009, Dan Cincotta, a fisheries biologist with West Virginia’s Department of Natural Resources, was conducting a routine inventory of Dunkard Creek, a small river that runs through West Virginia and southwestern Pennsylvania. He was accompanied by a consultant and an environmental engineer from the state’s largest coal and gas company, Consol Energy, which operates a coalmine, Blacksville #2, just outside of Wana, West Virginia. Cincotta was supposed to do electro-fish surveys, whereby the fish are temporarily stunned in order to assess populations, and to take a series of conductivity readings – a basic measure of how much salt is dissolved in water.

When his first reading measured 20,000 micro siemens per centimeter squared (µS/cm), Cincotta thought his equipment was broken; he had never seen readings above 5,000. The Consol consultant took her own reading in the same location but farther from the riverbank. It registered 40,000 µS/cm. Still in disbelief, Cincotta says, “we wandered upstream and found [Consol’s mining] discharge. And in the discharge alone, straight out of the pipe our equipment registered over 50,000 µS/cm,” roughly the equivalent of seawater. Untreated acid mine discharges typically have conductance values of between 1,000 and 1,500 µS/cm.