BarbriSFCourseDetails
  • videocam Live Webinar with Live Q&A
  • calendar_month April 21, 2026 @ 1:00 p.m. ET/10:00 a.m. PT
  • signal_cellular_alt Intermediate
  • card_travel Environmental
  • schedule 90 minutes

Groundwater Contamination Litigation: Proving and Defending Against Liability

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About the Course

Introduction

This CLE course will provide environmental counsel with a review of the regulatory structures for groundwater contamination, analyze lessons from recent significant cases, discuss trends related to damage recovery, and outline best practices for proving and defending against liability, including the impacts of newer federal PFAS drinking water standards and the CERCLA hazardous-substance designation for PFOA/PFOS.

Description

Groundwater contamination litigation is on the rise. Recent cases and enforcement actions have produced significant remediation commitments and damages exposure. Regulatory activity is rising at both federal and state levels, often accompanied by parallel private claims.

Litigation of such claims is quite arduous. Proving or defending against groundwater contamination liability involves significant documentation, scientific reports, and expert testimony. With increasing regulatory and litigation activity related to groundwater pollution, counsel must have the tools necessary to strategize in proving or defending against liability.

Listen as our panel of experts examines the regulatory structures for groundwater contamination, discusses lessons learned from recent cases of significance and the trends for damage recovery, and offers best practices for identifying the sources and proving liability, as well as defending against such claims.

Presented By

Vincenzo R. Chimera
Partner
K&L Gates LLP

Mr. Chimera is a partner in the Mass Tort and Product Liability practice group. He concentrates his practice on toxic tort matters, including defense of matters involving exposures to asbestos, ethylene oxide, benzene, and other alleged contaminants. Mr. Chimera has a proven track record of success for his clients, including second chair trial experience in defense of a steel manufacturer and successful appellate defense in the Illinois First District Appellate Court and US Seventh Circuit Court of Appeals. He is a member of the Federal Trial Bar for the Northern District of Illinois. Mr. Chimera's experience includes complex case management in mass tort actions, National Coordinating Counsel oversight of attorneys throughout the country in asbestos litigation, and significant trial court motion practice, including objections to personal jurisdiction, admissibility of expert testimony and other evidentiary issues.

Byron P. Gee
Partner
Nossaman LLP

Mr. Gee represents clients in trial courts and administrative hearings on all areas of water rights and environmental law. He focuses on the Comprehensive Environmental Response Compensation and Liability Act, the Hazardous Substance Account Act, the Resource Conservation and Recovery Act, the Clean Water Act and the California Porter Cologne Act. Mr. Gee also provides counsel in administrative proceedings and defended claims based on Federal, State and local air quality regulations, as well as water rights disputes. Before practicing law, he was a vice president and general manager at various oil companies. One of his main responsibilities was to ensure that these companies complied with all Federal, State and local environmental laws. Mr. Gee was selected to the "Super Lawyer" list for Environmental Law in 2011-2017 by Los Angeles magazine.

Credit Information
  • This 90-minute webinar is eligible in most states for 1.5 CLE credits.


  • Live Online


    On Demand

Date + Time

  • event

    Tuesday, April 21, 2026

  • schedule

    1:00 p.m. ET/10:00 a.m. PT

I. Federal and state regulatory structures

II. Recent litigation trends and case lessons

III. Trends in damages recovery

IV. Strategies for proving liability

A. Identifying source(s) and pathways

B. Establishing causal nexus; alternative source defenses

V. Practical litigation readiness

A. Documentation and data management

B. Scientific reports, modeling, and expert coordination

VI. Practitioner takeaways

The panel will review these and other high priority issues:

  • How are courts reacting to groundwater contamination cases?
  • Federal and state regulatory structures for groundwater contamination
  • Recent litigation trends and lessons learned from significant cases
  • Trends in damages recovery
  • Strategies for proving or challenging liability
  • Identifying source and establishing (or contesting) nexus
  • Documentation, scientific proof, and expert strategy