Another damning report on fracking

Oil and gas companies injected hundreds of millions of gallons of hazardous or carcinogenic chemicals into wells in more than 13 states from 2005 to 2009, according to an investigation by Congressional Democrats. The chemicals were used by companies during a drilling process known as hydraulic fracturing, or hydrofracking, which involves the high-pressure injection of a mixture of water, sand and chemical additives into rock formations deep underground. The process, which is being used to tap into large reserves of natural gas around the country, opens fissures in the rock to stimulate the release of oil and gas. This is the process the Dallas City Council, led by Dave Neumann, wants to approve to help add even more pollutants to the air and water here.

Many of the ingredients were “extremely toxic,” including benzene, a known human carcinogen, and lead. Companies injected large amounts of other hazardous chemicals including 11.4 million gallons of fluids containing at least one of the toxic or carcinogenic B.T.E.X. chemicals — benzene, toluene, xylene and ethylbenzene. The companies used the highest volume of fluids containing one or more carcinogens in Colorado, Oklahoma and Texas.

The report comes two and a half months after an initial report that found that 32.2 millions of gallons of fluids containing diesel, considered an especially hazardous pollutant because it contains benzene, were injected into the ground during hydrofracking by a dozen companies from 2005 to 2009, in possible violation of the drinking water act.