Quote To Live By: “Optimism is the faith that leads to achievement. Nothing can be done without hope and confidence.” -Helen Keller


  • Site Investigation and Remediation
  • Hydrogeology/Hydrology
  • Conceptual Site Model Development
  • Contaminant Fate and Transport
  • Groundwater/Surface Water Evaluations
  • Groundwater Monitoring/Optimization
  • Groundwater Modeling
  • Aquifer Testing/Well Hydraulics
  • Tidal Studies
  • Dam Remediation/Dewatering
  • Nuclear Site Licensing/Flood Hazards
  • Geostatistics/Statistics

  • Full Profile

    Dr. Gross is a hydrogeologist with over 25 years of research and consulting experience. During her career, she has served as the technical lead for site investigation, characterization, and remediation projects related to contaminated site clean-up, nuclear waste site monitoring, nuclear site licensing, and dam reconstruction. Lori has an interest and experience that span the engineering and geoscience disciplines and is able to integrate knowledge and methods from both to meet project objectives. Lori enjoys working on challenging problems, learning, and striving for innovation. She is client-focused and values a collaborative work environment. 


    • Ph.D., Civil Engineering, Carnegie Mellon University, 1994
    • M.S., Civil Engineering, Carnegie Mellon University, 1990
    • B.S., Mechanical Engineering, Ohio State University, 1984


    • Licensed Professional Engineer, State of Pennsylvania, Civil Engineering, PE074887
    • OSHA 29 CFR 1910 40-Hour H&S Training


    Site Investigation and Remediation

    The Chemours Company, Gibbstown, New Jersey
    Principal Hydrogeologist

    Served as the technical lead for groundwater fate and transport and the lead author of RAWPs for two former production areas with residual source zones. Provided technical support for the development of a RAWP for a tar pit/PCB area and a RAWP/RAR for a redevelopment area due for land transfer.

    The Dow Chemical Company, South Brunswick Township, New Jersey
    Principal Hydrogeologist

    Served as the technical lead and lead author for the RIR of a former chemical manufacturing facility. The site has had a long history of investigation and remediation. The final phase involved development of a CSM and CEA, with modeling used to project the downgradient boundary and duration of the CEA. Completed the soil RAO and recommended MNA for groundwater.

    The Chemours Company, Deepwater, New Jersey
    Principal Hydrogeologist

    Served as the technical lead and lead author on the final RFI report, a comprehensive document that resulted in a CMS recommendation for a 1500-acre site, which has 96 SWMUs and 11 AOCs. Lead on use of geostatistics to reduce the number of monitoring wells in the site-wide water-level network. Lead on optimization of multiple groundwater quality monitoring programs to align the monitoring with current site conditions and reduce costs. Independent technical reviewer of projects on an as-needed basis.

    DuPont, Waynesboro, Virginia
    Principal Hydrogeologist

    Served as the technical lead for groundwater in the final CMS for the site. Developed an evaluation of both pumping and non-pumping scenarios with the recommendation that no pumping was required and monitoring was protective. Proposed TI boundaries for three SWMUs based on an evaluation of mercury in groundwater.

    Confidential Client, Hagerstown, Indiana
    Principal Hydrogeologist

    Served as co-lead to develop a groundwater flow and transport model to evaluate and inform the design of an emulsified oil injection intended to remediate a chlorinated organic plume.

    DOE, Hanford Site, Washington
    Senior Scientist

    Evaluated the transport of contaminants including radionuclides from the vadose zone to groundwater. Compared resulting groundwater concentrations to drinking water MCLs and evaluated the long-term receptor dose of radionuclides.

    U.S. Navy and Air Force, Multiple Facilities
    Senior Scientist

    Prepared field sampling plans; evaluated site-specific geological and hydrogeological conditions; developed surface water, sediment transport, groundwater, and contaminant transport models; performed statistical evaluations of spatial and temporal data sets; supported assessments of risk to human health and the environment; and supported remedial designs and implementation. Served as the company-wide technical focal point for geostatistics.

    Project sites included:

    • MCCDC Quantico, Quantico, VA
    • Portsmouth Naval Shipyard, Portsmouth, NH
    • New London Naval Submarine Base, New London, CT
    • Naval Air Station, Jacksonville, FL
    • Naval Weapons Station, Charleston, SC
    • Marine Corps Air Station, Cherry Point, NC
    • Naval Industrial Reserve Ordnance Plant, Fridley, MN
    • Calverton Naval Weapons Industrial Reserve Plant, Long Island, NY
    • Charleston Air Force Base, Charleston, SC

    Taiwan Power Company
    Senior Scientist

    Provided statistical analysis and review of annual groundwater data for a radioactive waste storage facility. Designed and supervised development of a groundwater flow and transport model based on current data trends.

    Dams and Dewatering

    Omaha Airport Authority, Eppley Airfield, Nebraska
    Principal Hydrogeologist

    Reviewed a groundwater flow model developed to assess dewatering impacts during storm sewer reconstruction.

    Duke Energy, Belews, North Carolina
    Principal Hydrogeologist

    Co-developed a groundwater flow model to validate the dewatering design for dam remediation.

    Various Dams
    Senior Hydrogeologist

    Evaluated several dam leakage and grouting problems and provided recommendations for remediation. Reviewed pumping test analyses and groundwater models for several dam reconstruction projects.

    Nuclear Site Licensing and Flood Hazard Reviews

    Constellation Energy, Calvert Cliffs Nuclear Power Plant, Ginna Nuclear Generating Station, and Nine Mile Point Nuclear Generating Station
    Technical Reviewer

    Reviewed Flood Hazard Reevaluation reports, which evaluated existing flood design elevations and mitigation structures under a wide variety of flood hazard scenarios. These scenarios included local intense precipitation, flooding in streams and rivers, dam breaches and failures, storm surge, seiche, tsunami, ice-induced flooding, and channel migration or diversion.

    Ameren UE, Callaway Unit 2 EPR Design and COL Application – FSAR Section 2.4 and ER
    Senior Hydrogeologist and Project Supervisor

    Designed large-scale hydrological and hydrogeological investigations to characterize site conditions for plant construction and operation. Prepared site work plans; purchased field equipment; developed safety-related field testing, equipment calibration, and software validation procedures; supported the field team; analyzed field data; developed groundwater flow and radionuclide transport models; prepared FSAR and ER reports; and presented results to NRC reviewers.

    Ameren UE, Callaway Unit 1 Operational Assessment
    Senior Hydrogeologist

    Evaluated Unit 1 groundwater monitoring plan, proposed an updated approach to monitoring based on EPRI and NEI initiatives and Unit 2 COL application results, and provided Unit 2 COL groundwater flow model for internal use.

    Unistar, Bell Bend Nuclear Power Project EPR Design, COL Application
    Senior Hydrogeologist

    Senior staff support to field investigation, data collection, analysis, calculation report review, and report review.

    Confidential Client, United Arab Emirates
    Senior Hydrogeologist

    Reviewed hydrologic engineering sections for two proposed site license applications.

    Various NPPs
    Senior Hydrogeologist

    Provided hydrogeological support for several NPP licensing projects on an as-needed basis. Specifically, reviewed field methods, groundwater models, and reports.

    Graduate Student Research

    Carnegie Mellon University, Department of Civil Engineering
    Graduate Researcher

    Developed a numerical sedimentary process model for subsurface characterization and evaluation of contaminant transport; specifically, the model simulated the deposition of sediments in a meandering river and its floodplain and the resulting depositional patterns were assessed for contaminant transport behavior. The model simulated annual floods, sediment transport, channel migration and cut-off, overbank flow and deposition, and crevasse-splay development. The depositional patterns predicted by the model were related to the hydrologic and sediment inputs, compared to those observed in a subsurface formation, and assessed for an impact on contaminant transport. Supporting activities included interpretation of geophysical logs, stratigraphic correlation, and statistical analysis of depositional patterns.


    Juergens, L.J. and Small, M.J. April 1990. “A Model of Channel Deposition and Resulting Interconnectedness and Dispersion,” EOS Transactions, American Geophysical Union, 71(17).

    Juergens, L.J. and Small, M.J. October 1993. “Predicting Large-Scale Heterogeneity Within a Sedimentary Basin”, Invited to GSA Hydrogeology Division Symposium, “Geologic Insight and Groundwater Modeling, Geological Society of America, Boston, Massachusetts.

    Juergens, L.J. May 1994. “Geologic Process Modeling and Spatial Analysis of Fluvial/Floodplain Facies for Subsurface Characterization”, Ph.D. Dissertation, Carnegie Mellon University.

    Gross, L.J., and Small, M.J. September 1998. “River and Floodplain Process Simulation for Subsurface Characterization”, Water Resources Research, Vol. 34, No. 9, pp. 2365-2376.

    Gross, L.J., 2007. “Use of Geostatistics to Evaluate a Monitoring Well Network for a TCE Plume”, International Journal of Environment and Pollution, Volume 29, Number 4, pp. 370-382.