The U.S. Environmental Protection
Agency said for the first time it found chemicals used in
extracting natural gas through hydraulic fracturing in a
drinking-water aquifer in west-central Wyoming.
Samples taken from two deep water-monitoring wells near a
gas field in Pavillion, Wyoming, showed synthetic chemicals such
as glycols and alcohols “consistent with gas production and
hydraulic-fracturing fluids,” the agency said today in an e-
mailed statement.
The U.S. gets about one-third of its gas from fracturing,
or fracking, in which millions of gallons of chemically treated
water and sand are forced underground to break rock and let
trapped vapor flow. The findings give ammunition to
environmental groups, such as the Natural Resources Defense
Council, that have said the drilling risks tainting drinking
water and needs stronger regulation.
“This is just evidence of why we need better rules,” Amy
Mall, senior policy analyst for the group in Washington, said in
an interview. “It’s a game-changer. EPA experts and scientists
have recognized that there is real contamination, that there is
a real scientific basis for linking it to fracking.”
After complaints from residents of Pavillion, about 230
miles (370 kilometers) northeast of Salt Lake City, the EPA
began investigating private drinking-water wells about three
years ago. Calgary-based Encana Corp. (ECA), Canada’s largest natural-
gas producer, owns about 150 wells in Pavillion, according to
spokesman Doug Hock.
‘Not Definitive’
“They’ve used terms like ‘likely,’” Hock said today in an
interview. “What they’ve come up with here is a probability.
It’s not a definitive conclusion.”
Synthetic chemicals discovered in the aquifer are just as
likely “the result of contamination from their own sampling,”
he said.
Industry representatives such as Aubrey McClendon, chairman
and chief executive officer of Chesapeake Energy Corp. (CHK), the most
active U.S. oil and natural-gas driller among well operators,
have said there haven’t been proven cases of fracking fluids
contaminating drinking water.
“Try not to be the 51st person to write a story about the
alleged contamination of somebody’s water well from fracking,”
McClendon said April 8 at the Society of American Business
Editors and Writers conference at Southern Methodist University
in Dallas. “There have been some issues with drilling wells.
They don’t come from fracking.”
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