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Will Fair

Review of $1.7 Billion Remediation Claim at RCRA Megasite

Chlorinated Solvents and DNAPL, Expert Witness and Legal Support, Forensic Hydrogeology, Site Assessment and Characterization /

Independent forensic hydrogeology review of a large-scale groundwater remediation cost estimate prepared for a former industrial site.   Why This Engagement Mattered   Cleanup cost estimate exceeded $1.7 billion Cost driven primarily by assumed contaminant mass rather than measured conditions Required technical scrutiny beyond routine environmental review   Scope of Review   Examined conceptual site […]

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Technical Lead – DNAPL Megasite

Chlorinated Solvents and DNAPL, Fate and Transport, Forensic Hydrogeology, Modeling, Site Assessment and Characterization, Unique Analytical Methods, Wastewater /

Served as the Technical Lead for numerous and large site investigation and remediation projects at a 1,400+acre chemical manufacturing plant, which included extensive soil and groundwater contamination by dense non-aqueous phase liquid (DNAPL). Multiple projects, including investigation planning and analysis of site-wide data to identify sources, nature and extent, fate and transport, and risks associated

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Estimated Allocation Share for Contaminated Sediment

Expert Witness and Legal Support, Fate and Transport, Sediment and Surface Water, Wastewater /

Why This Engagement Mattered Determination of allocation share for contaminated river sediment required assessment of whether a former manufacturing facility contributed contaminants of concern at levels relevant to financial responsibility. The technical dispute focused on estimation of contaminant mass flux associated with permitted sewer discharges and the accuracy of calculations used within the allocation framework.

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PFAS Site Characterization – Petroleum Refinery

Fate and Transport, Forensic Hydrogeology, PFAS, Sediment and Surface Water, Site Assessment and Characterization, Wastewater /

Evaluated extensive PFAS dataset that includes groundwater, surface water impoundments, wastewater treatment plant influent/effluent, groundwater treatment system influent/effluent, outfalls, and stream and river samples to determine impacts of site discharges to surface water quality. Analysis of PFAS chemical signatures and hydrogeologic details enabled attribution of PFAS present beneath the site to have originated from another

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Groundwater Plume Discharge to Surface Water and Sediment Investigation

Chlorinated Solvents and DNAPL, Fate and Transport, Sediment and Surface Water, Site Assessment and Characterization /

Assessed the distribution, sources, and transport mechanisms of chlorofluorocarbons (e.g., Freon), chlorinated solvents, and gasoline antiknock chemicals into the Delaware River (river sediment and surface water), and in an aquifer beneath the Delaware River. Analyzed data collected over 2.5 miles of coastline, including results of dual frequency echo-sounder for bathymetric mapping, side-scan sonar to map

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Assessment of Liability: Contaminated Groundwater

Chlorinated Solvents and DNAPL, Expert Witness and Legal Support, Fate and Transport, Forensic Hydrogeology, Site Assessment and Characterization /

Forensic hydrogeologic evaluation of chlorinated solvent contamination using chemical, hydrogeologic, and historical data analyses to assess potential responsible party status.   Why This Engagement Mattered   Responsibility for PCE- and TCE-related soil and groundwater contamination depended on whether releases pre- or post-dated specific ownership and operational periods. The technical dispute centered on contaminant age, plume

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Fractured Bedrock Aquifer Research Site

Fractured Rock Hydrogeology, Modeling, Site Assessment and Characterization, Unique Analytical Methods /

This project included testing and development of traditional and new tools to characterize groundwater flow in fractured crystalline rock, including multi-well pumping tests, downhole flow measurement technologies, downhole fracture detection and borehole geophysical and cross-hole seismic data, and fracture distribution and geometry data. Modeling: Constructed numerical model to simulate groundwater flow, including calibration to pumping

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Contaminated Sediment Investigation, Modeling, and Remediation

Chlorinated Solvents and DNAPL, Fate and Transport, Forensic Hydrogeology, Modeling, Sediment and Surface Water, Site Assessment and Characterization, Unique Analytical Methods, Wastewater /

Investigation, design, Conceptual Site Model development, and remedial selection for sediment contaminated with VOCs and aniline. Project included high-resolution profiling of sediment pore water concentrations, sediment pore water transport modeling, bench-scale tests to assess efficacy of a Geosynthetic Bentonite Liner cap, and design of a sheet pile barrier to prevent groundwater plume discharge to surface

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Hazardous Waste Landfill Investigation and Treatability Study

Chlorinated Solvents and DNAPL, Fate and Transport, Site Assessment and Characterization /

This project included assessment of DNAPL distribution in a hazardous waste landfill and management of a treatability study that included bench tests of enhanced surfactant recovery.   Developed the conceptual site model and technical basis for remediation of a 28-acre hazardous waste landfill at a major chemical manufacturing facility. Integrated historical operational records, geology, hydrogeology,

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Hydrogeologic Exploration to Benefit Farmers in Morocco

Communication and Education, Fractured Rock Hydrogeology, Non-Profit, Site Assessment and Characterization, Visualization /

Hydrogeologic reconnaissance was performed at 4 sites in the High Atlas Mountains and Middle Atlas Mountains in Morocco with the purpose of identifying locations for accessing groundwater for irrigation. The work was performed in collaboration with the High Atlas Foundation.     This January 31, 2024, webinar presents the methodologies and findings of hydrogeologic reconnaissance

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