The Environmental Protection Commission adopted amendments to Iowa Admin. Code r. 23, Emission Standards for Contaminants; r. 25, Measurement of Emissions; and r. 34, Provisions for Air Quality Emissions Trading Programs. The amendments remove from the state air quality rules EPA's Clean Air Mercury Rule provisions that were vacated by the U.S. Court of Appeals for the D.C. Circuit. The amendments also add new mercury monitoring provisions to the state air quality rules. http://www.legis.state.ia.us/aspx/ACODOCS/DOCS/10-07-2009.Bulletin.pdf pp. 1053-58.