Dr. Chase W. Holton is a Professional Engineer in Lakewood, Colorado with over 8 years of experience as an environmental engineer, project manager, and technical consultant. He is proficient in several areas, including subsurface vapor intrusion, indoor air quality, site characterization, soil and groundwater remediation, litigation support and financial allocation. He has authored and co-authored over 20 peer-reviewed technical papers and is an associate editor for the National Groundwater Association Journal, Groundwater Monitoring and Remediation.

Dr. Holton is an expert in the assessment, mitigation, and modeling of the vapor intrusion pathway. He has worked on numerous vapor intrusion projects across the United States, Canada, Europe, and Australia. He has written and contributed to vapor intrusion guidance for the U.S. Environmental Protection Agency (USEPA), U.S. Department of Defense (DoD), and several U.S. and international state environmental regulatory agencies. His doctoral research for the Strategic Environmental Research and Development Program (SERDP, ER-1686) involved the long-term monitoring of groundwater, soil gas, indoor air, and numerous environmental factors at a vapor intrusion research house. This work included assessment of seasonal indoor air sampling schemes, evaluation of building pressure control methods, and development of field and modeling approaches to identify preferential vapor intrusion pathways. More recently, Dr. Holton’s work has included the development and testing of soil gas sampling and analysis methods and evaluating the fate and transport of neutral and gas-phase per- and polyfluoroalkyl substances (PFAS).

Dr. Holton has also worked to identify and address soil, sediment, and groundwater contamination at numerous sites across the U.S. and Canada, including those impacted by organic and inorganic contaminants.