IMPACTS OF SHALE GAS WASTEWATER DISPOSAL ON WATER QUALITY IN WESTERN PENNSYLVANIA

"In Pennsylvania, oil and gas wastewater is sometimes treated at brine treatment facilities and discharged to local streams. This study examined the water quality and isotopic compositions of discharged effluents, surface waters, and stream sediments associated with a treatment facility site in western Pennsylvania. The elevated levels of chloride and bromide, combined with the strontium, radium, oxygen, and hydrogen isotopic compositions of the effluents reflect the composition of Marcellus Shale produced waters ... Radium-266 levels in stream sediments (544–8759 Bq/kg) at the point of discharge were  ca. 200 times greater than upstream and background sediments (22–44 Bq/kg) and above radioactive waste disposal threshold regulations, posing potential environmental risks of radium bioaccumulation in localized areas of shale gas wastewater disposal."

Zum Abstract der Studie [Volltext hinter einer Paywall] von Nathaniel Warner, Cidney Christie, Robert Jackson & Avner Vengosh, erschienen in Environmental Science & Technology (2. Oktober 2013) »