Jeffrey T. Rominger, Ph.D.
Principal
Dr. Rominger is an environmental engineer and scientist at Gradient with expertise in environmental fluid mechanics, chemical fate and transport, and environmental forensics. He provides consulting and expert support to clients on issues related to chemical source identification, risk assessment, environmental fate and transport, and chemical fingerprints and fingerprinting techniques. In his work, he has addressed questions related to both legacy and emerging chemicals, including polycyclic aromatic hydrocarbons (PAHs), metals, pesticides, pharmaceutical ingredients, chlorinated solvents, polychlorinated biphenyls (PCBs), dioxins and furans, and per- and polyfluoroalkyl substances (PFAS), as well as others.
Dr. Rominger has worked on behalf of private parties, governments, and neutral parties in the resolution of disputes and allocations. He has provided expert testimony regarding subsurface chemical releases, as well as environmental forensic techniques for PCBs and dioxins.
Subsurface Chemical Release: Provided expert testimony at trial on the timing of a subsurface hydrocarbon leak from an underground pipe.
Contamination Analysis: Performed a forensic analysis of contamination from multiple point sources in an estuary located in a heavily populated area. Contaminants included PAHs, PCBs, dioxin/furans, and metals. The forensic analysis was used to provide a scientifically sound cost-allocation model for use in negotiations.
Groundwater Analysis: Developed a conceptual framework for the movement of herbicides from their application point to groundwater supplies, and through the subsequent retention and slow release over a multi-decade timescale. Analyzed multiple sites with disparate hydrology using several national databases.
Sediment and Chemical of Concern Transport: Served as a neutral technical advisor to the allocation team for a large multi-party sediment site, addressing topics that include the long-term quantitative impacts of tidal surface water transport on chemical movement, as well as chemical forensics, watershed modeling, and tidal hydrodynamics.
Indoor Air Chemical Analysis: Analyzed the behavior and movement of chemicals in building materials and indoor air, including sorption and partitioning, the role of HVAC and ventilation, and equilibrium conditions, using modeling, data analysis, and chemical forensics analysis.
Chemical Forensic Analysis: Provided expert testimony at a deposition and trial on dioxin and PCB chemical forensics and transport pathways at a former multi-party industrial site with soil and sediment impacts.
Surface Water Assessment: Analyzed the long-term behavior and transport of fluorinated compounds in a tidally influenced surface water body in a highly urbanized corridor.
Rominger, JT; Nepf, HM. 2014. “Effects of blade flexural rigidity on drag force and mass transfer rates in model blades.” Limnol. Oceanogr. 59:2028-2041.
Nepf, HM; Rominger, JT; Zong, L. 2013. “Coherent flow structures in vegetated channels.” In Coherent Flow Structures at Earths Surface. (Eds.: Venditti, J; Best, J; Church, M; Hardy, R), Wiley-Blackwell, Hoboken, NJ.
Rominger, JT; Nepf, HM. 2011. “Flow adjustment and interior flow associated with a rectangular porous obstruction.” J. Fluid Mech. 680:636-659.
Rominger, JT; Lightbody, AF; Nepf, HM. 2010. “Effects of added vegetation on sand bar stability and stream hydrodynamics.” J. Hydraulic Eng. 136:994.
Luhar, M; Rominger, J; Nepf, H. 2008. “Interaction between flow, transport and vegetation spatial structure.” Environ. Fluid Mech. 8:423-439.