EPA to gather data on hydraulic fracturing fluid chemicals. In response to a petition for rulemaking, the Environmental Protection Agency ("EPA") announced it would gather data on chemicals used in hydraulic fracturing fluid. In 2011, environmental groups had petitioned EPA to regulate under the Toxic Substances Control Act ("TSCA") the chemicals used in the well drilling and completion process, which is broader than just hydraulic fracturing fluids (e.g., chemicals in cements and drilling muds). In response, the Agency agreed to issue an advanced notice of proposed rulemaking to gather data on chemicals used in hydraulic fracturing fluids, but declined to commit to any future decision to regulate those chemicals. EPA would take comments on a process to gather data while avoiding duplication, protecting confidential information, and consulting with other agencies. EPA did not provide a timeframe for issuing its notice.