On July 11, a final EPA rule to reconsider the 2008 primary and secondary national ambient air quality standards for the ozone was sent to the OMB for review. Under the proposed rule, which EPA published in July 2009 and intends to issue in its final form on July 29, states would be required to increase the number of ozone monitors in cities, require monitoring in rural areas for the first time, and expand the monitoring season in some states.