On February 27, Gina McCarthy, assistant administrator for air and radiation, told the Clean Air Act Advisory Committee that EPA hopes to release the Tier 3 gasoline rule in early March. The Office of Management and Budget has been reviewing the proposed rule, which is expected to limit the sulfur content of gasoline to 10 parts per million, since January 29. EPA is anticipated to issue a final Tier 3 rule by the end of the year and the standard is expected to take effect for model year 2017.