Dr. Ahsanuzzaman is a professional civil and environmental engineer with over twenty years of experience in groundwater hydrology. He is an expert in groundwater flow and contaminant transport modeling, hydrogeologic site characterization, cleanup of soil and groundwater, modeling software development, environmental database management and water quality modeling. He provides expert support to Superfund and RCRA sites as a hydrogeologist in EPA’s Region 4. He has worked for almost 10 years at EPA’s Office of Research and Development (ORD). He has coordinated several research and technical support projects for the ORD. He has developed, co-authored and peer-reviewed a number of modeling software packages for the USEPA’s Center for Subsurface Modeling Support (CSMoS). Currently, EPA distributes two modeling software packages that he has developed as the primary and co-author (e.g., FOOTPRINT and REMFuel). In addition, Dr. Ahsanuzzaman is a national expert for EPA in technical review of groundwater modeling software packages and site-specific applications of models in cleanup of Superfund/RCRA sites. He has published a number of articles in peer-reviewed journals and proceedings. Currently, Dr. Ahsanuzzaman is serving as a co-chair of the Ground Water Forum (GWF), which includes hydrogeologists from the USEPA’s regional offices, head quarter and other federal and state agencies. As GWF co-chair, he has liaison research work from ORD with the regional offices by arranging conference calls and NARPM (National Association of Remedial Project Managers) sessions. Additionally, Dr. Ahsanuzzaman has supported Region 4 in reviewing proposals for the Regional Applied Research Effort (RARE). He also routinely supports ORD by conducting internal peer-review of research articles for journal publication. Finally, Dr. Ahsanuzzaman is a licensed professional engineering (PE) and is a Certified Ground Water Professional (CGWP).