Dr. Ning-Wu Chang is a Senior Hazardous Substances Engineer with the Department of Toxic Substances Control (DTSC) of the California Environmental Protection Agency, located in Cypress, California. He joined the DTSC in 2001 as a remedial project manager for a major military facility overseeing a variety of remedial projects at the facility. He is currently with the Engineering Service Unit for engineering supports and technical lead for various projects thru out the programs. Prior to joining the State, Dr. Chang has worked for private consultant companies for more than 15 years. Dr. Chang has extensive experience in municipal water and wastewater treatment system evaluation and design, industrial water and wastewater treatment system evaluation and design, soil and groundwater remedial investigation, remedial system evaluation and design, landfill leachate treatment system evaluation and design, industrial waste minimization, and RCRA/SDWA permitting and compliance. He has contributed to ITRC since 2003 as a team member for the ITRC Remediation Process Optimization (RPO) team and is currently the team leader for the ITRC Remediation Risk Management (RRM) team. He earned his bachelor’s degree in Civil Engineering from Chung Yuan College in 1975 and a master’s in sanitary engineering from the National Taiwan University in 1977 in Taiwan, and also received a master in 1982 and a Ph.D. degree in 1986 in environmental engineering from the University of North Carolina at Chapel Hill, North Carolina.