LSU (Academic)
1978 - 1984 - Graduate Assistant, Exxon Fellowship, Chemical Engineering Department, Louisiana State University, Baton Rouge. Model Coal Liquid Hydrocracking Study toward M.S. and Ph.D. degrees. Petroleum Engineering Minor.
1984 - 1988 - Assistant Professor, Department of Petroleum Engineering, LSU.
1988 - 1994 - Affiliate Faculty Member, Chemical Engineering Department, LSU.
1994 - 1997 - Associate Professor, Department of Civil and Environmental Engineering, LSU.
1997 -2003 - Professor, Department of Civil and Environmental Engineering, LSU.
2003 - Present - Humphreys T. Turner Professor of Engineering, Department of Civil and Environmental Engineering, LSU.
LSU (Administrative)
1988 - 1991 - Assistant Director, US EPA Hazardous Waste Research Center, LSU.
1991 - 1999 - Director, Hazardous Waste Research Center, LSU.
1989 - 1999 - Director, USGS Louisiana Water Resources Research Institute, LSU.
1998 - 1999 - Acting Director, Remote Sensing & Image Processing Lab & Institute for Recyclable Materials.
1991 - 2003 - Assistant Director, US EPA Hazardous Substance Research Center/South & Southwest, LSU base with Rice University, Ga Tech and Texas A&M.
2002 - 2004- Coordinator, Environmental Engineering Program, Department of Civil and Environmental Engineering, LSU.
2003 - 2004 - Field Program Manager and QA/QC Officer, Hazardous Substance Research Center/S&SW, LSU.
2004 – 2007- Associate Dean, College of Engineering, LSU
2004- 2009 - Program Administrator (“chair”) of Engineering Science Graduate Program within duties as Associate Dean for Research and Graduate Studies.
2007 – 2009 - Associate Dean and D.W. Clayton University Professor of Engineering Science and Technology, College of Engineering, LSU
2008 – 2009 - Interim Dean, College of Engineering, LSU
2009-2010 - Interim Dean, The Graduate School, LSU
June 2010-Jan. 2012 - Dean, The Graduate School, LSU
July 2012 – Present - Head, Department of Biological and Agricultural Engineering, College of Engineering, LSU and LSU AgCenter.