He collaborates with university partners to develop new characterization and remediation approaches through advancements in the use of molecular and biological diagnostic tools, as well as statistical modeling and machine learning. His work has focused on traditional contaminants, as well as emerging contaminants, such as per- and polyfluoroalkyl substances (PFAS) and 1,4-dioxane. Using bioreactors and bioremediation recirculation strategies, his remedial design approaches have reduced concentrations by 99% within chlorinated solvent and petroleum hydrocarbon plumes at multiple sites. He has several peer-reviewed journal publications and has presented internationally on these topics.

Jeff has supported projects that have obtained regulatory response complete or site closure status at over 100 sites. He has provided consulting expertise on a broad range of projects including bioremediation, remedial process optimization, molecular and biological diagnostic tools, green and sustainable remediation design, groundwater age dating and tracer studies, aquifer test design and analysis, wellfield design and well hydraulics, and managed aquifer recharge. His expertise includes enhanced in-situ bioremediation, biogeochemical degradation, solar-powered recirculation and hybrid remedial approaches, enhanced attenuation, monitored natural attenuation, long-term monitoring optimization strategies, in-situ chemical oxidation, bioventing, soil vapor extraction, free-product recovery, horizontal and vertical well design, light non-aqueous phase liquid risk-based remedial strategies, and expedited regulatory review strategies.