https://clu-in.org CLU-IN&quot;s ongoing series of Internet Seminars are free, web-based slide presentations with a companion audio portion covering a wide variety of technical topics related to hazardous waste characterization, monitoring, and remediation. For a complete list of seminars archived since 2000 and videos of selected seminars archived since 2012, please visit http://clu-in.org/live/archive/. Our Rehabilitation Act Notice for reasonable accommodation is available at http://clu-in.org/training/accommodation.cfm. CLU-IN was developed by the U.S. Environmental Protection Agency (EPA) but is intended as a forum for all waste remediation stakeholders. For a complete list of RSS feeds available on CLU-IN, please visit http://clu-in.org/rss/about/. en-us Information presented is considered public information and may be distributed or copied. The U.S. Government retains a nonexclusive, royalty-free license to publish or reproduce these materials, or allow others to do so, for U.S. Government purposes. These materials may be freely distributed and used for non-commercial, scientific, and educational purposes. Commercial use of the materials available from this server may be protected under U.S. and Foreign Copyright Laws. Sun, 18 Oct 2026 16:03:08 GMT https://clu-in.org/live/default.cfm#FRTR_Fall_2026_General_Meeting:_Recent_Developments_in_PFAS_Remediation_Technologies <strong>Introduction to the FRTR Fall 2026 Meeting</strong><br /> Understanding per- and polyfluoroalkyl substances (PFAS) toxicity, sampling, behavior in the environment and treatment has required sustained efforts in technology research, development, testing, and evaluation (RDT&E). Together with these efforts, effective technology transfer has been critical to providing remediation practitioners with best available tools and targeted remediation strategies for managing and restoring sites posing unacceptable risks. In recent years, FRTR meeting discussions have included PFAS-related topics such as "Source Differentiation and Risk Assessment"(Fall 2024), "PFAS Characterization Technologies" (Fall 2023), and "Emerging Characterization and Remedial Technologies" (Fall 2018). The pace of PFAS-related RDT&E has only increased since these earlier meetings and the PFAS knowledge base has expanded substantially.<br /> <br /> <strong>Meeting Objective</strong><br /> The FRTR 2026 Fall Meeting, held in-person and virtually, focuses on advanced remediation technologies for PFAS. It provides an opportunity to share the expanding PFAS knowledge base and highlights progress in the rapidly evolving field of PFAS remediation. Invited speakers provide presentations and panel discussions to share accomplishments and new methodologies in key technical areas and discuss application of recent advances in characterization and remediation of PFAS-impacted sites. The morning session will focus on recent advances in PFAS characterization, fate, and transport. The afternoon session will build on these topics by exploring PFAS numerical modeling, technology transfer, and PFAS destruction technologies. Fri, 9 Oct 2026 11:12:09 GMT https://clu-in.org/live/default.cfm?guid=20261215#FRTR_Fall_2026_General_Meeting:_Recent_Developments_in_PFAS_Remediation_Technologies https://clu-in.org/live/default.cfm?guid=20261117#Understanding_Vapor_Intrusion_-_Introductory_Concepts_&_Fundamentals_-_A_Two_Part_Series:_Session_1 <em>The <strong>Vapor Intrusion 101</strong> training series provides an overview of vapor intrusion (VI) and presents information from the 2026 <a href="https://itrcweb.org/vapor-intrusion-toolkit/">ITRC VI Toolkit</a> (which includes fact sheets, technology information sheets, and checklists).</em><br /> <br /> This course introduces participants to the fundamentals of vapor intrusion, the process by which vapor-forming chemicals in contaminated soil or groundwater volatilize and migrate into buildings. The course will discuss sources, pathways, and receptors. It will identify and assess VI risks in various settings (residential, commercial, industrial) and familiarize participants with regulatory frameworks and guidelines (e.g., USEPA, state-specific regulations). The participants will gain working knowledge of how to develop a Conceptual Site Model (CSM), design and implement sampling strategies, establish data quality objectives (DQOs), and conduct data and risk evaluations. It will provide an overview of mitigation strategies, including various closure strategies, land use covenants, and institutional controls.<br /> <br /> Session 1 will focus on:<ul><li>What is Vapor Intrusion</li><li>VI Exposure Pathway</li><li>VI in Practice - including common CSMs, Scenarios, and Chemicals</li><li>Potential Limiting Factors for VI - PVI vs Chlorinated VI, Geology, Hydrogeology, and Building Operating Conditions</li><li>How is VI Different & Challenges in Evaluating VI</li></ul><br /> Session 2 will focus on:<ul><li>How VI is Different</li><li>How to assess VI - CSM, Sample Collection, Data Interpretation, Risk Assessment, and Project Life Cycle</li><li>Managing VI Risk at a Site - Mitigation, Remediation, Monitoring</li><li>What does Closure look like & Various Exit Strategies</li></ul><br /> <br /> The course will provide connections to the 2026 <a href="https://itrcweb.org/vapor-intrusion-toolkit/">ITRC VI Toolkit</a> to help the audience understand how to find and use these new resources for VI sites. Wed, 23 Sep 2026 14:45:19 GMT https://clu-in.org/live/default.cfm?guid=20261117#Understanding_Vapor_Intrusion_-_Introductory_Concepts_&_Fundamentals_-_A_Two_Part_Series:_Session_1 https://clu-in.org/live/default.cfm?guid=20261203#Understanding_Vapor_Intrusion_-Introductory_Concepts_&_Fundamentals_-_A_Two_Part_Series:_Session_2 <em>The <strong>Vapor Intrusion 101</strong> training series provides an overview of vapor intrusion (VI) and presents information from the 2026 <a href="https://itrcweb.org/vapor-intrusion-toolkit/">ITRC VI Toolkit</a> (which includes fact sheets, technology information sheets, and checklists).</em><br /> <br /> This course introduces participants to the fundamentals of vapor intrusion, the process by which vapor-forming chemicals in contaminated soil or groundwater volatilize and migrate into buildings. The course will discuss sources, pathways, and receptors. It will identify and assess VI risks in various settings (residential, commercial, industrial) and familiarize participants with regulatory frameworks and guidelines (e.g., USEPA, state-specific regulations). The participants will gain working knowledge of how to develop a Conceptual Site Model (CSM), design and implement sampling strategies, establish data quality objectives (DQOs), and conduct data and risk evaluations. It will provide an overview of mitigation strategies, including various closure strategies, land use covenants, and institutional controls.<br /> <br /> Session 1 will focus on:<ul><li>What is Vapor Intrusion</li><li>VI Exposure Pathway</li><li>VI in Practice - including common CSMs, Scenarios, and Chemicals</li><li>Potential Limiting Factors for VI - PVI vs Chlorinated VI, Geology, Hydrogeology, and Building Operating Conditions</li><li>How is VI Different & Challenges in Evaluating VI</li></ul><br /> Session 2 will focus on:<ul><li>How VI is Different</li><li>How to assess VI - CSM, Sample Collection, Data Interpretation, Risk Assessment, and Project Life Cycle</li><li>Managing VI Risk at a Site - Mitigation, Remediation, Monitoring</li><li>What does Closure look like & Various Exit Strategies</li></ul><br /> <br /> The course will provide connections to the 2026 <a href="https://itrcweb.org/vapor-intrusion-toolkit/">ITRC VI Toolkit</a> to help the audience understand how to find and use these new resources for VI sites. Wed, 23 Sep 2026 14:45:20 GMT https://clu-in.org/live/default.cfm?guid=20261203#Understanding_Vapor_Intrusion_-Introductory_Concepts_&_Fundamentals_-_A_Two_Part_Series:_Session_2