The Trillion-Gallon Loophole: Shockingly Lax Rules for Drillers that Inject Pollutants Into the Earth | Alternet
"The waste – the byproduct of oil and gas drilling – was described in regulatory documents as a benign mixture of salt and water. But as the liquid rushed from the trucks, it released a billowing vapor of far more volatile materials, including benzene and other flammable hydrocarbons."