Dominic DiGiulio, PhD

Dr. DiGiulio is a senior research scientist at PSE Healthy Energy and an affiliate at the University of Colorado. He completed a BS in environmental engineering at Temple University, a MS in environmental science at Drexel University, and a PhD in soil, water, and environmental science at the University of Arizona. During his 31 years with the US Environmental Protection Agency (EPA), he conducted research on gas flow-based subsurface remediation, groundwater sampling methodology, soil-gas sampling methodology, gas permeability testing, intrusion of subsurface vapors into indoor air, subsurface methane and carbon dioxide migration, and solute transport of contaminants in soil and groundwater including that associated with hydraulic fracturing and pits used to dispose of oil and gas waste. He assisted in the development of EPA’s original guidance on vapor intrusion and the EPA’s Class VI Rule on geologic sequestration of carbon dioxide. The focus of his current work is on understanding the environmental impact from oil and gas development, especially in regard to surface and groundwater resources. He has served as an expert witness in litigation relevant to oil and gas development, has testified before state oil and gas commissions on proposed regulation, and has testified before Congress on the impact of oil and gas development on water resources.

PEER-REVIEWED AND TECHNICAL REPORTS:

• DiGiulio, D. C., Rossi, R. J., Jaeger, J. M., Shonkoff, S. B. C., and Ryan, J. N. (2021). Vulnerability of Groundwater Resources Underlying Unlined Produced Water Ponds in the Tulare Basin of the San Joaquin Valley, California. Environmental Science & Technology.
• Hill, L. L., Czolowski, E., DiGiulio D. C., Shonkoff S. B. C. (2019). Temporal and Spatial Trends of Oil and Gas Waste Disposal in Pennsylvania, 1991 – 2017. Science of The Total Environment.
• DiGiulio, D. C., Rybal, C. J., Hargrove, K. D., Wilkin, R. T. (2018). Leak, Purge, and Gas Permeability Testing to Support Active Soil-Gas Sampling, EPA 600/R-18/225, U.S. Environmental Protection Agency, Office Research and Development, National Risk Management Research Laboratory.
• Ruybal, C. J., Wilkin, R. T., Hargrove, K. D., McCray, J. E., DiGiulio, D. C. (2018). A New Equilibrator Design for Rapid Detection of Methane in Ground Water during Purging. Environmental Engineering Science.
• DiGiulio, D. C., Shonkoff, S. B. C., Jackson, R. B. (2018). The Need to Protect Fresh and Brackish Groundwater Resources During Unconventional Oil and Gas Development. Current Opinion in Environmental Science & Health, 3, 1-7.
• DiGiulio, D. C., Jackson, R. B. (2016). Impact to Underground Sources of Drinking Water and domestic wells from production well stimulation and completion practices in the Pavillion, Wyoming Field. Environmental Science & Technology, 50, 4524-4536.
• Jackson, R. E., Lowry, E. R., Pickle, A., Kang, M., DiGiulio, D. C., Zhao, K. (2015). The Depths of Hydraulic Fracturing and Accompanying Water Use Across the United States. Environmental Science & Technology, 49 (15), 8969–8976.
• DiGiulio, D. C., Wilkin, R. T., Miller, C., Oberley, G. (2011). Investigation of Ground Water Near Pavillion, WY.  U.S. EPA, Office of Research and Development, National Risk Management Research Laboratory, Ada, OK.
• Wilkin, R. T., DiGiulio, D. C. (2010). Geochemical Impacts to groundwater from geologic carbon sequestration: Controls on pH and inorganic carbon concentrations from reaction path and kinetic modeling. Environmental Science & Technology, 44(12), 4821-4827.
• DiGiulio, D. C. (2010). Use of Soil-Gas, Gas Flux, and Ground Water Monitoring to Evaluate Potential Leakage to Underground Sources of Drinking Water, the Atmosphere, and Buildings During Geological Sequestration of Carbon Dioxide – Science in Action Fact Sheet. U.S. Environmental Protection Agency, Office of Research and Development, National Risk Management Research Laboratory.
• Schnaar, G., DiGiulio, D. C. (2009). Computational Modeling of the Geologic Sequestration of Carbon Dioxide. Vadose Zone Journal, 8, 389–403.
• DiGiulio, D. C., Paul, C., Scroggins, B., Cody, R., Willey, R., Clifford, S., Mosley, R., Lee, A., Christensen, K., Costa, R. (2006). Comparison of Geoprobe PRT, AMS GVP soil-gas sampling systems with dedicated vapor probes in sandy soils at the Raymark Superfund Site. U.S. Environmental Protection Agency, Office of Research and Development, National Risk Management Research Laboratory.
• DiGiulio, D. C., Paul, C., Cody, R., Willey, R., Clifford, S., Kahn, P., Mosley, R., Lee, A., Christensen, K. (2006). Assessment of Vapor Intrusion in Homes near the Raymark Superfund Site Using Basement and Sub-Slab Air Samples. U.S. Environmental Protection Agency, Office of Research and Development, National Risk Management Research Laboratory.
• DiGiulio, D. C., Varadhan, R. (2001). Development of Recommendations and Methods to Support Assessment of Soil Venting Performance and Closure. U.S. Environmental Protection Agency, Office of Research and Development, National Risk Management Research Laboratory.
• DiGiulio, D. C., Varadhan, R. (2001). Limitations of ROI Testing for Venting Design: Description of an Alternative Approach Based on Attainment of Critical Pore-Gas Velocity in Contaminated Media. Ground Water Monitoring and Remediation, 21(1), 97-114.
• DiGiulio, D. C., Varadhan, R. (2001). Analysis of Water Saturation, NAPL Content, Degradation Half-Life, and Lower Boundary Conditions on VOC Transport Modeling: Implications for Closure of Soil Venting Systems. Ground Water Monitoring and Remediation, 21(4), 83-91.
• DiGiulio, D. C., Varadhan, R. (2000). Steady-State, Field-Scale Gas Permeability Estimation and Pore-Gas Velocity Calculation in a Domain Open to the Atmosphere. Remediation, 10(4), 13-25.
• DiGiulio, D. C., Varadhan, R., Brusseau, M. L. (1999). Evaluation of Mass Flux to and from Ground Water Using a Vertical Flux Model (VFLUX): Application to the Soil Vacuum Extraction Closure Problem. Ground Water Monitoring and Remediation, 19(2), 96-104.
• Cho, J. C., DiGiulio, D. C., Wilson, J. T. (1997). In-situ Air Injection, Soil Vacuum Extraction and Enhanced Biodegradation: A Case Study in a JP-4 Jet Fuel Contaminated Site. Environmental Progress, 16:35-42.
• DiGiulio, D. C. (1997). Innovative Site Remediation Technology, Design & Application, Volume 7, Vacuum Extraction and Air Sparging. American Academy of Environmental Engineers, EPA 542-B-97-010.
• Cho, J. C., DiGiulio, D. C. (1992). Pneumatic Pumping Test for Soil Vacuum Extraction. Environmental Progress, 11, 228-233.
• DiGiulio, D. C. (1992). Evaluation of Soil Venting Application. U.S. Environmental Protection Agency, Office of Research and Development.
• DiGiulio, D. C. (1992). Evaluation of Soil Venting Application., J. Hazardous Materials, 32(2).
• DiGiulio, D. C. (Editor). (1991). Proceedings of the Symposium on Soil Venting. U.S. Environmental Protection Agency, Office of Research and Development.