Experience

Groundwater-Surface Water Interaction Modeling

Rebuttal of Estimated $1.7 Billion Remediation Costs at Historical RCRA Megasite

Evaluated Plaintiff’s Expert Report, which estimated cost of groundwater at $1.7 billion. Identified errors in Plaintiff’s Expert Report and recalculated the extent and mass of contaminant sources; demonstrated that Plaintiff’s claim lacked credibility.     Detailed: Engaged by the defendant’s attorneys, this forensic hydrogeology analysis critically evaluated the Plaintiff’s claim that groundwater remediation costs at […]

“Introduction to Groundwater Contamination by PFAS at Airports and Military Bases”

The engaging and short video below describes the composition, use, and potential effects of PFAS-containing firefighting foam known as Aqueous Film Forming Foam (AFFF). It includes pictures and animations that illustrate the evolution of a groundwater plume from a fire training area, the potential impact of the plume on groundwater and municipal water supply, and […]

EPA’s Unprecedented Interim Drinking Water Health Advisories for PFOA and PFOS

By Joe Cotruvo(1), Susan Goldhaber(2), and Andrew Cohen, Issue Paper in Groundwater, February 20, 2023.   1. Former Director, USEPA Drinking Water Standards Division. 2. Former Toxicologist, USEPA   Abstract   Per- and polyfluoroalkyl substances (PFAS) are persistent and widely distributed in the environment from commercial products and waste process residues, including in surface waters […]

Class Action Analysis: PFAS Impacts from Metal Plating Facility

Evaluated historical reports and soil/groundwater data related to PFAS contamination associated with mist suppressant use at a metal plating facility. Conducted forensic analysis of contaminant distribution, identifying co-contaminants that suggest drinking water impacts are attributable to multiple potential sources. Developed and presented a conceptual site model to clarify the extent and complexity of the contamination. […]

Hydrogeologic Exploration to Benefit Farmers in Morocco

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 […]