U.S. Environmental Protection Agency (EPA) Administrator Lisa Jackson signed a notice on October 19, 2012, that EPA would stay the compliance date for its rule setting air toxics standards for area sources in the chemical manufacturing sector while it reconsiders the rule.

EPA issued the Chemical Manufacturing Area Sources (CMAS) rule in January 2009, and upon a request for reconsideration from chemical industry groups, agreed to reconsider the rule on June 15, 2010. That reconsideration notice left the original rule in place, with a compliance date of October 29, 2012. EPA published a proposed rule reconsidering aspects of the CMAS rule, some of which would revise its applicability. Because EPA has not completed the reconsideration rulemaking, it stayed the effective date for 60 days.