A shift in the Agency's priorities warrant this rulemaking being withdrawn from the Regulatory Agenda at this time. Since no proposal was ever issued, this action is being withdrawn via the Regulatory Agenda. Withdrawing this action does not preclude EPA from pursuing the same action in the future. Should the Agency opt to do so, it will create a new entry in the Regulatory Agenda for that action. EPA created this entry in the Regulatory Agenda because EPA was considering testing options for Bisphenol A (BPA), a high production volume chemical, is a reproductive, developmental, and systemic toxicant in animal studies and is weakly estrogenic. Following consideration of public comments received on an advance notice of proposed rulemaking (ANPRM) published July 26, 2011, EPA will determine whether to develop a notice of proposed rulemaking (NPRM) seeking comment on testing requirements under consideration. As discussed in the ANPRM, the NPRM would identify specific protocols for toxicity testing to determine the potential for BPA to cause adverse effects in environmental organisms at low concentrations, and/or identify specific protocols for environmental sampling and monitoring to determine whether potentially sensitive organisms may currently be exposed to concentrations of BPA in the environment that are at or above levels of concern for adverse effects, including endocrine-related effects.