http://online.wsj.com/article/SB10001424052748704487904576267690277252796.htmlHouse Democrats Say Hydraulic Fracturing Fluids Contain Toxic Ingredients
By STEPHEN POWER
WASHINGTON -- The drilling fluids used to recover natural gas and oil from deep shale formations contain substances identified as human carcinogens, or listed as hazardous under federal clean air or water rules, according to a report issued late Saturday by senior House Democrats... The composition of hydraulic fracturing fluids has become a key point of tension between the oil and gas industry, which has been reluctant to disclose the specific contents of drilling fluids, and those who say such disclosure is necessary to determine whether hydraulic fracturing poses a threat to drinking water...
Citing data submitted by the companies to the House Energy and Commerce Committee in response to requests from the panel's Democratic members, the report says that drilling fluids used by the companies contained 29 chemicals that are known or possible human carcinogens, regulated under the Safe Drinking Water Act for their risks to human health, or listed as hazardous air pollutants under the Clean Air Act. Among these substances, according to the report: Methanol, benzene, sulfuric acid and lead... The Democratic report, says that between 2005 and 2009, more than a dozen leading energy companies have used more than 780 million gallons of drilling fluids containing roughly 750 different chemicals and components...
Under current law, most hydraulic fracturing is exempted from regulation by the EPA under the Safe Drinking Water act. The report could stir further calls by some lawmakers for federal regulation of hydraulic fracturing, which involves injecting a mixture of water, sand and chemicals underground at high pressures to release oil from hydrocarbon deposits. "It is deeply disturbing to discover the content and quantity of toxic chemicals, like benzene and lead, being injected into the ground without the knowledge of the communities whose health could be affected," said Rep. Diana DeGette (D., Colo.) who released the report along with Mr. Waxman and Rep. Edward Markey (D., Mass.)
"Of particular concern to me is that we learned that over the four-year period studied, over one and a half million gallons of carcinogens were injected into the ground in Colorado. Many companies were also unable to even identify some of the chemicals they were using in their own activities, unfortunately underscoring that voluntary industry disclosure is not enough to ensure the economic benefits of natural gas production do not come at the cost of our families' health."