• videocam Live Webinar with Live Q&A
  • calendar_month July 7, 2026 @ 1:00 PM ET/10:00 AM PT
  • signal_cellular_alt Intermediate
  • card_travel Environmental
  • schedule 90 minutes

PFAS Litigation: Expert Depositions and Scientific Evidence

Causation, Source Identification, Sampling Data, Daubert Challenges, Deposition Strategy

About the Course

Introduction

This CLE webinar will navigate the expert, scientific, and evidentiary issues that drive PFAS litigation. The panel will examine how counsel can develop and/or challenge proof of exposure, source identification, fate and transport, causation, allocation, and damages in PFAS-based disputes. The panel will cover working with experts and complicated scientific evidence, such as environmental sampling, analytical chemistry, toxicology, epidemiology, hydrogeology, and source analysis.

Description

The authoritative panel will discuss expert selection and preparation, sampling and testing disputes, source identification and allocation, general and specific causation, Rule 702 and Daubert challenges, and taking and defending expert depositions.

Listen as our panel discusses working with PFAS experts, probing scientific opinions, preparing for expert depositions, challenging methodologies, and presenting complex scientific evidence in environmental cases.

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


  • Live Online


    On Demand

Date + Time

  • event

    Tuesday, July 7, 2026

  • schedule

    1:00 PM ET/10:00 AM PT

I. Introduction: current PFAS litigation and expert evidence    

II. Building a team of experts

A. Analytical chemistry, hydrogeology, fate and transport, source identification

B. Toxicology, epidemiology, and medical causation

C. Damages, remediation, and allocation

III. Sampling, testing, data reliability, chain of custody, and common challenges

IV. Proving and challenging source identification and exposure

V. Causation and health risk evidence

VI. Expert discovery, depositions, and Daubert/Rule 702 strategy

VII. Using expert evidence in settlement, mediation, and trial

The panel will explore these and other key areas:

  • PFAS-specific expert evidence, key differences to other contaminants
  • Understanding sampling, laboratory methods, limits, and data validation
  • Proving or challenging source identification, exposure pathways, and allocation
  • Impacts of toxicology, epidemiology, and medical causation evidence
  • Preparing, taking, and defending expert depositions
  • Rule 702 and Daubert challenges to PFAS expert opinions
  • Evidence use in settlement, mediation, motions, and trial