Meng Ling, Ph.D., PE, with AME Inc., has 20 years of experience in environmental and municipal engineering. His professional expertise includes site characterization and remediation, groundwater and NAPL modeling, visualization and litigation support, statistical and geostatistical analysis, monitoring optimization, water and wastewater engineering, and environmental software development. Ling’s authored a variety of publications regarding groundwater modeling and monitoring, NAPL characterization and assessment, litigation support, and other technical issues. He is also a coauthor of the Monitoring and Remediation Optimization System, or MAROS, decision-support software developed by the Air Force Center for Environmental Excellence. In addition, Johnson is a frequent presenter at environmental conferences and workshops. He holds a B.S in civil engineering, an M.S. in municipal engineering, and a Ph.D. in environmental engineering.