Two of the largest companies involved in natural gas drilling have acknowledged pumping hundreds of thousands of gallons of diesel-based fluids into the ground in the process of hydraulic fracturing, raising further concerns that existing state and federal regulations don’t adequately protect drinking water from drilling.
Rep. Henry A. Waxman, D-Calif., who released the information in a statement Thursday, announced that the House Committee on Energy and Commerce, which he chairs, is launching an investigation into potential environmental impacts from hydraulic fracturing.
The process, which forces highly pressurized water, sand and chemicals into rock to release the gas and oil locked inside, gives drillers unprecedented access to deeply buried gas deposits and vastly increases the country’s known energy reserves. But as ProPublica has detailed in more than 60 articles, the process comes with risks. The fluids used in hydraulic fracturing are laced with chemicals — some of which are known carcinogens. And because the process is exempt from most federal oversight, it is overseen by state agencies that are spread thin and have widely varying regulations.