On September 18, 2014, WLF filed formal comments with the Environmental Protection Agency (EPA), urging it to proceed with caution in connection with its plans to regulate hydraulic fracturing (“fracking”) by the oil and gas industry. WLF noted that fracking is already heavily regulated at the state level, and argued that additional federal regulations would be unnecessary and duplicative. EPA is proposing to invoke its authority under Section 8 of the Toxic Substances Control Act to require submission of detailed reports regarding the precise chemicals used in fracking operations. WLF argued that such regulations would risk disclosure of valuable trade secrets. WLF urged EPA to instead encourage further voluntary use of FracFocus, an online fracking chemistry registry that allows companies to submit information about chemicals being used at individual wells. It currently provides information on fracking fluids used in more than 56,000 wells.