The debate over disclosure of the harmful chemicals used in hydraulic fracturing has come a long way in the last 12-18 months or so. Back then, the question was: Will companies disclose their special sauce? Industry has mightily attempted to shield from the public which poisons they use to extract methane from deep shale formations. It’s proprietary information, according to their lawyers. Their lawyers still continue to make that argument in a case currently pending in Wyoming. But for the most part the policy debate has shifted. Now, the question is: What should the companies disclose? And what form should the disclosure take? Led by our friends at the Environmental Integrity Project, Earthworks and a number of other organizations are asking the Environmental Protection Agency (EPA) to add the oil and gas industry to the list of sectors required to disclose the toxic chemicals associated with fracking. Section 313(b)(1)(B) of the Emergency Planning and Community Right-to-Know Act (EPCRA) confers upon private citizens the right to petition the EPA to add additional industries to EPCRA.