Dr. James A. Jahnke is a consultant with Source Technology Associates of Research Triangle Park, NC, a firm specializing in source emission monitoring and continuous emission monitoring. Dr. Jahnke has over thirty years of experience in the development and evaluation of CEM systems and has authored the book, "Continuous Emission Monitoring, 2nd Edition," published by John Wiley & Sons in 2000. A recognized expert in CEM systems, he serves as the Chairman of ASTM Committee D22.03 on Source Monitoring and is the U.S. ASTM representative to the International Standards Organization Committee on Source Monitoring.