Gradient

Senior Scientists

Jeffrey T. Rominger, Ph.D.
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Education

Ph.D., Environmental Fluid Mechanics, Massachusetts Institute of Technology

S.M., Civil and Environmental Engineering, Massachusetts Institute of Technology

B.S., Civil and Environmental Engineering, University of Virginia

Minor, Mechanical Engineering, University of Virginia

Expertise

  • Contaminant Fate & Transport
  • Environmental Forensics
  • Fluid Dynamics
  • Solid Mechanics
  • Numerical Modeling

Jeffrey T. Rominger, Ph.D.

Senior Environmental Engineer

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Dr. Rominger is a senior environmental engineer with a background in environmental fluid mechanics and contaminant fate and transport.  At Gradient, he applies his technical and analytical skills to the fields of surfacewater and groundwater contamination in the context of source characterization, risk analysis, and remediation.

Prior to joining Gradient, Dr. Rominger completed his doctoral research at MIT, studying the physical mechanisms by which aquatic vegetation can adapt to different hydrodynamic environments. This research drew from the fields of flexible-body dynamics, sorption chemistry, and turbulence. 

Education

Ph.D., Environmental Fluid Mechanics, Massachusetts Institute of Technology

S.M., Civil and Environmental Engineering, Massachusetts Institute of Technology

B.S., Civil and Environmental Engineering, University of Virginia

Minor, Mechanical Engineering, University of Virginia

Expertise

  • Contaminant Fate & Transport
  • Environmental Forensics
  • Fluid Dynamics
  • Solid Mechanics
  • Numerical Modeling

Services

Representative Projects

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.

Subsurface Modeling:  Modeled the subsurface leakage rates of petroleum products from a corroded pipe, accounting for the effects of the surrounding soil and for the changes in the pipe due to corrosion. 

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 multidecade timescale.  Analyzed multiple sites with disparate hydrology using several national databases.

Human Health Risk Assessment:  Developed a probabilistic risk assessment framework for evaluating the potential migration of drilling fluids to drinking water resources and assessed potential human health risks for a range of conditions.

Environmental Modeling:  Modeled the transport of treated effluent from the land surface to the groundwater beneath the chemical manufacturing facility.  Analyzed the effluent concentrations and discharge practices and modeled the vadose zone transport and degradation of the chemical of interest under a range of environmental conditions.

Barite Mining Risks Evaluation:  Evaluated contaminants in groundwater and sediment to facilitate a remedial strategy at a former mining site contaminated with metals.  Performed a forensic analysis of the site to define and differentiate between contaminated conditions and local background conditions.

Leachate Assessment:  Modeled the transport of leachate from surface impoundments in the Continental US within a probabilistic framework for a wide range of climatic and site conditions.  Our results provided estimated durations for interactions between the impoundment leachate and nearby surface and groundwaters.

Selected Publications

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.