American Chemical Society, 1981 - present Committee on Environmental Improvement, 2010 - present Environmental Chemistry Division, 1984 - present Member at Large, 2003 - 2004 Chair Elect, 2013-2015 Alternate Councilor, 2008 - present Executive Committee, 2002 - present Treasurer, 2009 - 2013 Society of Environmental Toxicology & Chemistry, 1998 - present World World Council, 2009 - 2012 SIACM Steering Committee, 2009-2012 President, North America, 2010 - 2011 Vice President, North America, 2009 - 2010 Board of Directors, North America, 2006 - 2012 Annual Meeting Chair, 2003 Chemists in SETAC Advisory Group, 1994 - present