On April 22, the Environmental Protection Agency (EPA) Clean Air Scientific Advisory Committee released a draft report on air quality standards for lead, urging that existing standards be kept. The report echoed the January 2013 EPA preliminary policy assessment which said available scientific data did not support revisions. In 2008, the agency revised the lead standards from the 1979 level of 15 microgram per cubic meters to .15 microgram per cubic meter. The EPA is required by the Clean Air Act to consider revisions every five years; the agency plans to propose a rule based on these reviews in January 2014 and a final rule that October.