Geochemistry and Emerging Contaminants
Environmental Project Management
Expert Witness/Litigation Support Pertaining to the Fate and Transport of Environmental Contaminants in Soil, Soil Vapor, and Groundwater
Project Manager for Remedial Investigations, Feasibility Studies, and Remedial Actions
Redevelopment of Brownfield, Petroleum Spill, and MGP Sites
Analytical and Numerical Groundwater Flow and Contaminant Transport Modeling for Hazardous Waste Sites, Landfills, Remedial Design and Litigation Support
Ph.D., Hydrogeology - State University of New York at Stony Brook
M.S., Geology - State University of New York at Stony Brook
B.S., Geology - Queens College, City University of New York
Dr. Nathan Epler is a Principal Hydrogeologist with Roux, having 30 years of experience in site assessment, site remediation, and chemical fate and transport evaluations and modeling. He holds a Ph.D. in Groundwater Geochemistry from the State University of New York at Stony Brook, an M.S. in Geology from the State University of New York at Stony Brook, and a B.S. in Geology from the City University of New York at Queens College. Dr. Epler has extensive expertise in evaluating the timing of releases, geochemistry of groundwater including emerging contaminants, fate and transport of environmental contaminants, and using computer modeling in his analyses. Dr. Epler has managed remedial investigations at major industrial facilities, petroleum refineries, Manufactured Gas Plant, and Brownfield redevelopment sites throughout the United States. He has designed and supervised the installation of large-scale remedial systems at Superfund Sites throughout the northeast. He has prepared—and gained regulatory acceptance of—groundwater models for Industrial Site Recovery Act (ISRA) Sites in New Jersey, Federal Superfund sites, and large petroleum terminal and industrial sites, including sites impacted by mixed plumes of volatile organic compound (VOC) contamination. Dr. Epler has been a guest lecturer at Columbia and New York Law Schools, the American Law Institute and American Bar Association Environmental Litigation conferences, published with the American Bar Association, and served on panel discussions for the American Bar Association’s Dispute Resolution Section Annual Conferences. He has deposition and mediation experience.
Expert Witness for former service station owners in Westchester, NY defending against claim of impact to adjacent private properties. Demonstrated that additional third-party defendants were equally responsible for impact.
Gross v. Pall Corporation. Expert Witness for Long Island industrial site. Successfully defended third-party against claim that they contributed to off-site contamination of a public supply well. Case settled prior to trail.
Expert Witness for upstate New York industrial site where residents were claiming indoor air impacts occurred due to migration of chlorinated solvents in groundwater along sewer lines. Used historic release data and GIS interpretation of chemical signatures to demonstrate that additional responsible parties likely contributed to contamination, which were not named in the original complaint.
Expert Witness for an insurance carriers’ defense group. Provided expert report concerning the timing of groundwater contamination. Case settled prior to deposition.
Major et al. and Green et al. v. AstraZeneca Inc., et al. Expert Witness for upstate New York industrial site. Provided litigation support on case involving a former industrial dump site where wastes were burned and whether migration from the site could have impacted surrounding domestic supply wells. Case settled prior to deposition.
FMC Corporation v. The Vendo Company and Wier Floway, Inc. Consulting Expert for plaintiff. Reviewed groundwater fate and transport model created by defendants. Model was shown to be flawed, inaccurate, and invalid according to generally-accepted modeling practices. Case settled prior to deposition.
Consulting expert for Fortune 500 corporations group related to the Passaic River/Newark Bay Superfund Site.
Consulting expert reviewing groundwater model for Newtown Creek Superfund Site.
Testifying expert for Gowanus Canal Superfund Site small party defendant.
Testifying Expert for a Natural Resources Damage case involving impacts to public supply wells on Long Island.
Consulting expert evaluating groundwater fate and transport model for large groundwater plume impacting supply wells on Long Island.
Expert Witness for water district impacted by a Superfund Site on Long Island, New York. Provided opinions on source and timing of VOC plume and apportionment.
Consulting Expert to provide opinions on impact of product release at a petroleum terminal relative to existing impacts.
Consulting Expert to provide opinions on nature and timing of pipeline release.