Contaminated Site Clean-Up Information (CLU-IN): Internet Seminar Audio Archives

In October 2024, ITRC released the 6PPD & 6PPD-quinone Guidance Document to provide environmental professionals and communities with information about the current science and regulatory framework of 6PPD and 6PPD-quinone (6PPD-q). 6PPD-q is a contaminant of emerging concern and is a transformation product of the tire anti-degradant (6PPD), an antiozonant used in tires. Join us for this ITRC training course to get a basic overview of the science and policy measures surrounding the Tire Anti-Degradants 6PPD and 6PPD-q. Attendees will gain insight into the current state of knowledge on topics such as: background and use of 6PPD in tires, toxicity in aquatic species and humans; occurrence, fate, and transport; measuring, mapping, and sampling; mitigation measures; and policy, regulations, and laws. Currently, 6PPD is used in all tires and can contaminate stormwater and surface water anywhere tires are used. 6PPD-q was identified as a chemical fatal to coho salmon in 2020. Since that time, it has been documented as acutely toxic to multiple trout species found throughout the United States. 6PPD and 6PPD-q have been found in waterways, aquatic organisms, soils, air, and humans. This training will introduce you to the ITRC 6PPD & 6PPD-quinone Guidance Document which provides more technical detail than can be covered in this training course To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/itrc/6PPD-Q_050125/

This presentation will cover fundamental concepts on groundwater fate and transport modeling along with examples of different models. Additionally, the complexity of modeling leaching of PFAS compounds in subsurface will be presented. To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/tio/GW-PFAS-Modeling_043025/

M2S2 will be presenting three webinars in FY25, titled "Sessions from the STAND DOWN" highlighting presentations from the FY25 M2S2 Stand Down hosted by US Army Corps of Engineers (USACE) in December 2024. These online events will bring together USACE, DoD leaders, federal land managers, state and federal regulators and contractors to discuss munitions response cleanup issues and initiatives.  Presenters and attendees will discuss programmatic information, and share lessons learned to foster strong working relationships. The first webinar in this series will focus on Remedial Actions and include the following presentations:"RA Lessons learned" — Elise Goggin"Regulatory perspective on ROD's" — Jeff Swanson "Common challenges implementing the remedy" — DJ Myers"Records we need in the Record of Decision" — Nancy Heflin To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/tio/STAND-DOWN-1_042925/

This training class builds on the earlier information for fate and transport and site characterization presented in the PFAS 101 CLU-IN training. It provides more in-depth information for fate and transport, site characterization, source identification and some introductory information on environmental forensics. These topics will be presented along with options and a framework for data visualization. This training will focus largely on PFAS fate and transport in groundwater. The goal is to provide detailed information about the inputs practitioners can use to develop a robust conceptual site model to help understand fate and transport at PFAS sites, and how to gather evidence of multiple sources. Resources and further details for the topics included in this training are in the ITRC Guidance Document (PFAS-1) in Sections 2.6, 3, 4, 5, 10, 11 and 15 along with referenced tables. Learning Objectives: Understand fate and transport processes that are unique to PFAS due to their physical and chemical properties.How to characterize sites with these processes and properties in mind.Describe options for and advantages of various data visualization techniques.Introduce basic forensic techniques for source evaluation. To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/itrc/PFAS-BTB-FT_042425/

The EPA Superfund Redevelopment Program's mission is to protect human health and the environment and promote the reuse of Superfund sites. Restoring these once-contaminated properties to productive use revitalizes local economies and prioritizes economic prosperity, spurring new jobs, business growth, tax revenues, spending and new amenities for communities.   This webinar showcases the economic benefits of Superfund Redevelopment for communities across the country. Participants will hear about the most up-to-date economic numbers and success stories. They will also learn about tools used at Superfund sites to ensure that reuse projects meet local needs and reflect community priorities, as part of restoring the greatness of the American economy. To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/tio/superfund-redevelopment_042325/

In 2023, ITRC published the Sediment Cap Chemical Isolation Guidance to supplement the 2014 Contaminated Sediments Remediation Guidance with the goal of improving consistency in sediment cap performance outcomes. Sediment capping is a commonly selected remediation approach and numerous designs have been completed. Previous cap designs have been evaluated in multiple ways, and these varying approaches have led to some differences in selection of chemical design criteria, construction tolerance specifications, and monitoring/maintenance objectives for sites with similar characteristics and contaminants, leading to different expectations for long-term performance and reliability. The ITRC Sediment Cap Chemical Isolation Guidance provides a framework for the design, construction, and long-term monitoring of the chemical isolation function of sediment caps. The framework consists of an iterative design process informed by site-specific data that balances achievement of chemical design criteria, physical design constraints, constructability and permitting requirements. In addition, the guidance summarizes key construction considerations and presents a recommended approach for monitoring and evaluating long-term chemical isolation performance. The recommended framework presented in the Sediment Cap Chemical Isolation Guidance is illustrated below. The Sediment Cap Chemical Isolation Training will cover several key elements of the recommended framework, including: A capping overview that summarizes objectives of capping, role of the chemical isolation layer, and generic cap types and compositions. A discussion of performance objectives and design concepts that includes the selection of chemical isolation performance targets criteria and development of design criteria while considering the site setting and conceptual site model elements. An overview of chemical isolation layer modeling tools and discussion of their applicability to support chemical isolation design, important model input parameters, and the impact of uncertainty and sensitivity of modeling results. A summary of chemical isolation construction considerations, including an overview of available construction methods and tolerances and quality assurance and quality control measures. A discussion of cap performance monitoring and maintenance objectives and approaches that include developing monitoring objectives to assess chemical isolation performance and methods for guiding long-term maintenance decisions. We encourage participants to review the ITRC Sediment Cap Chemical Isolation Guidance (SD-1) before and after the training to become familiar with the topics and recommendations discussed during the training. This training is intended for all environmental professionals working in the field of sediment capping projects, including regulators and other government agency staff, consultants, project stakeholders, and industry. To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/itrc/sd-1_042225/

Petroleum is a complex mixture of many compounds. Regulatory and technical guidance documents commonly focus on the hydrocarbon components of that mixture, or perceived risks that they present. However, focusing on a specific area of concern often causes practitioners to overlook other aspects of a release. For example, concerns related to exposure to total petroleum hydrocarbons (TPH) risks may be overlooked while pursuing concerns related to light non-aqueous phase liquid (LNAPL) recovery or petroleum vapor intrusion (PVI). This class is designed to provide a basic overview of hydrocarbon behavior in the subsurface and how to scientifically assess concerns arising from the release of petroleum products into the environment. It will highlight key issues that help identify and manage TPH, LNAPL, and PVI risks together. Key concepts will include: Fundamentals of petroleum hydrocarbonsPetroleum chemistryHow TPH, LNAPL, and PVI are relatedBuilding an integrated conceptual site model (CSM) What is a CSM…what is its purpose?When is a CSM complete?Identifying and managing the risks from petroleum hydrocarbonsDefining LNAPL risks based on acute, saturation, composition, or aesthetic concernsEmphasize the importance of biodegradation in risk management decision makingHow to select remedial goals and remedies that align with your goals This course is based upon three separate Guidance Documents developed by ITRC that address the course content in detail:Light Non-Aqueous Phase Liquid (LNAPL), LNAPL Site Management: LCSM Evolution, Decision Process, and Remedial Technologies (LNAPL-3) Petroleum Vapor Intrusion (PVI), Fundamentals of Screening, Investigation, and Management (PVI-1) Total Petroleum Hydrocarbon (TPH), TPH Risk Evaluation at Petroleum-Contaminated Sites (TPHRisk-1) To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/itrc/Hydrocarbons_041725/

This virtual training will discuss the updated Framework for Investigating Asbestos-Contamination at Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) Sites (released in 2021). By taking this training, participants will learn how to better assess exposure and risk from asbestos and consider unique scientific and technical issues associated with the investigation of human exposure and risk from asbestos. The training modules will discuss specific strategies that are based on the best currently available science as well as methods for characterizing exposure and risk from asbestos to inform risk-management. The course also presents:A flow diagram for asbestos site assessment and removal action and remedial action decisionsThe application of activity-based sampling (ABS) to evaluate the asbestos exposure potential at a site in support of risk-based removal and remedial decisionsResources for asbestos sample collection and analysisA definition of phase contrast microscopy equivalent (PCME) structures for estimating exposures in asbestos for risk assessmentThe available asbestos toxicity values (non-cancer Reference Concentration [RfC] and age- and duration-specific cancer inhalation unit risks [IURs]) that are used in asbestos risk assessmentA real-world case study that applies the 2021 Framework The course will feature previously narrated modules complemented with videos and live subject matter experts that will be available to answer any questions. To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/tio/Asbestos-Framework_041625/

This virtual training will discuss the updated Framework for Investigating Asbestos-Contamination at Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) Sites (released in 2021). By taking this training, participants will learn how to better assess exposure and risk from asbestos and consider unique scientific and technical issues associated with the investigation of human exposure and risk from asbestos. The training modules will discuss specific strategies that are based on the best currently available science as well as methods for characterizing exposure and risk from asbestos to inform risk-management. The course also presents:A flow diagram for asbestos site assessment and removal action and remedial action decisionsThe application of activity-based sampling (ABS) to evaluate the asbestos exposure potential at a site in support of risk-based removal and remedial decisionsResources for asbestos sample collection and analysisA definition of phase contrast microscopy equivalent (PCME) structures for estimating exposures in asbestos for risk assessmentThe available asbestos toxicity values (non-cancer Reference Concentration [RfC] and age- and duration-specific cancer inhalation unit risks [IURs]) that are used in asbestos risk assessmentA real-world case study that applies the 2021 Framework To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/tio/Asbestos-Framework_041525/

Performance data for treatment technologies such as permeable reactive barriers, chemical oxidation, and chemical or biological reductive dechlorination suggests there are factors that may consistently impact the effectiveness of groundwater remediation at sites with volatile organic contamination. Aquifer and remedy geochemistry, site characterization, and implementation issues are factors that have impacted groundwater remedy performance at a number of sites. After illustrating these performance factors through case studies, we will cover tips and tricks that can be used to increase the likelihood of a successful groundwater remedy. To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/tio/GW-Remedy-Selection_040225/

The ITRC Managed Aquifer Recharge (MAR-1) Training is intended for state regulators and stakeholders who may not be familiar with the opportunities and challenges associated with MAR. It provides a basic understanding of MAR concepts, along with case studies, that showcase examples of successful MAR applications. For those who are familiar with MAR, the training gives an overview of the components of the MAR process along with the important considerations associated with each component necessary for the design and implementation of a MAR project. It is important to understand that MAR is an area of active research and expanding practical applications, and that this management process is continuing to evolve with time.The combination of climate change and growing demand for fresh water has resulted in an increase in the vulnerability and scarcity of freshwater supplies around the world. The need for fresh water to grow crops and provide for the welfare of the general population, economic growth, and ecosystems is becoming more acute. In the past 50 years, the amount of water withdrawn for human use has tripled. MAR is becoming an increasingly important method for improving and supplementing subsurface freshwater storage and ecosystems with an additional benefit of reducing flood risk, managing stormwater, mitigating subsidence, and controlling saltwater intrusion. Training ObjectivesUnderstand MAR and its applications.Recognize MAR as a process rather than a single technology. Acknowledge that MAR can be widely applied.Understand MAR's role in the future for addressing water supply resilience and climate impacts.Training GoalsProvide a model of the MAR process illustrating the primary components and their interaction.Provide an overview of the applications of MAR and the role in addressing climate change impacts through sustainability and resilience in water resources management.Provide information on each component of MAR and the critical considerations for each component in the design of a MAR project.Reference case studies illustrating the various applications of MAR.After the MAR Training, the audience will have the tools necessary to understand MAR and how it can be used as a water resource management tool that encompasses a wide variety of water sources, recharge methods, and storage management practices. The audience will develop an understanding of MAR and its importance in achieving sustainability, resilience, and the far-reaching benefits of MAR related to water supply and quality, mitigation of saltwater intrusion, flood control, and ecological habitats. This training will provide information about the components of a MAR project to help regulators, practitioners, and stakeholders in the development and review of a MAR project.Recommended Reading: Participants are strongly encouraged to review the ITRC Managed Aquifer Recharge document prior to participating in the training class. To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/itrc/MAR_032725/

This training class builds on the earlier information for introductory PFAS topics presented in the PFAS 101 CLU-IN training. It provides more in-depth information for human health effects, ecological toxicity and ecological risk assessment, PFAS regulations, and AFFF alternatives and replacement. Resources and further details for the topics included in this training are in the published PFAS-1 guidance document in Sections 7, 8 and 17.2 along with referenced tables. Learning Objectives: Discuss new information on the health effects of categories of PFAS not previously addressed. We'll also talk about the recent use of data from epidemiology studies to develop toxicity factors and guidelines; describe how the U.S. EPA has recently used a mixtures approach to derive a proposed MCL for 4 PFAS. We'll discuss why certain agencies are regulating PFAS as a class, and give examples, and will also give brief updates on our understanding of the adverse effects of PFAS after inhalation or dermal exposure.Discuss PFAS exposure pathways relevant to ecological receptors; general toxicological information available for invertebrates, vertebrates, and plants; the data gaps and uncertainties associated with ecotoxicological studies; and current approaches in ecological risk assessment of PFAS.Discuss development and findings of some of the External Data Tables including the Water and Soil Values Table, the Air Criteria Table, and the Regulatory Programs Summary Table. Discuss the current status of some of the Federal Regulations including drinking water regulations and how this may impact some states. Discuss the current status of AFFF alternatives and replacement. To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/itrc/PFAS-BTB-HH_032525/

This webinar will discuss groundwater and surface water interactions in two presentations: Part I: Introduction (Judy Canova) Typical interactions between groundwater and surface water may vary in different regions depending on the types of climate that occur. This introduction focuses on principles and rudimentary cost-effective techniques that can be used to evaluate groundwater-surface water interactions with the expectation that groundwater discharge to surface water is typically not homogeneous and diffuse but rather heterogeneous and focused on preferential pathways of discharge. Case studies illustrating the evaluation of groundwater and surface water will be presented to demonstrate principles of characterization as well as the concepts of heterogeneity. Part II: Bonita Peak Case Study and CSM (Ian Bowen) This presentation will cover a geophysics characterization approach used to understand ground water/surface water interactions at the Bonita Peak Mining District Superfund Site, and the impact the findings had on the Conceptual Site Model. To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/tio/GW-SurfaceWater_031925/

ITRC's Pump & Treat (P&T) Optimization training aims to summarize existing information and best practices while also developing a systemic and adaptive optimization framework specifically for P&T well-network design and management. P&T systems have been one of the most commonly used methods for hydraulic containment and treatment of contaminated groundwater at sites with large groundwater plumes. This method cleans up groundwater contaminated with dissolved chemicals by pumping groundwater from wells to an above-ground treatment system that removes the contaminants. Optimization of P&T remedies is important for maintaining contaminant removal effectiveness throughout the operation lifetime and managing the system toward an exit strategy. A strategy for routine optimization of P&T remedies is key for maintaining the contaminant removal efficiency of these systems. The primary audience for this training is environmental project decision-makers, which may include federal, state, tribal, and various local agency employees; contractors to these agencies; and potentially liable parties and their engineers and consultants as well as involved stakeholders. Generally, those involved in designing, building and operating, and optimizing pump & treat systems would benefit.The goal of the training is to provide a roadmap for optimizing a P&T system and refining the remedial strategy or shifting toward another remedial approach. Pump & Treat optimization should be systematic and data-based, and the training and document aim to provide tools and direction to assist in this rigorous process.Key TakeawaysUnderstanding the P&T project lifecycle: evaluation, optimization, and transition, as well as considerations for sustainability, resiliency, and regulatory and stakeholder entities.P&T optimization should incorporate adaptive site management. P&T systems are influenced by a diverse collection of outside factors, which should be considered throughout the entire optimization process.Transition and termination should both be considered during the optimization process.Remedial objectives dictate evaluation and optimization efforts for P&T systems..Prior to attending the training class, participants are encouraged to view the associated ITRC Pump & Treat guidance document. To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/itrc/PT-1_031325/

In response to one of the biggest emerging environmental concerns, ITRC formed the Microplastics Team in 2021 to develop the Microplastics Guidance Document. Plastics have become pervasive in modern life and are now used in a wide range of commercial and industrial applications. Microplastics may result from the degradation and fragmentation of larger plastics, or they may be intentionally produced for specific applications and products. Regardless of their origin, microplastics are now ubiquitous in our environment. Because of their small size and pervasiveness in the environment, microplastics, along with any other contaminants which are adhered to the microplastics, may be inadvertently consumed by humans and other organisms. The online ITRC Guidance Document is geared toward an audience with reasonable level of scientific understanding, but not microplastic-specific knowledge. The guidance provides a user with information on microplastics and the state of the applied science without having to go to the scientific literature. The target audience for the guidance and this training course includes state regulators and environmental consultants, as well as community and tribal stakeholders. The guidance and this associated training course uses a conceptual site model to navigate microplastics in the environment and explore the following general areas:An introduction to microplastics, their sources, and worldwide distributionThe pathways through which microplastics can enter and travel in the environment and their distribution in various media (water, soil, sediment, air, and biota) A current look at the most common techniques and best practices for sampling and analyzing microplasticsPotential human health and ecological risks associated with microplastics in the environmentAn overview of existing regulations related to microplastics and macroplastics at the state, federal, and international levelsExamples of prevention and mitigation strategies and best management practices to reduce microplastics from entering the environment and the emerging technologies to abate, treat, and remediate microplastics once they exist in the environment Identification of data gaps and the need for further researchSeveral case studies illustrating a range of current microplastics-related topicsPrior to attending the training class, participants are encouraged to view the associated ITRC Microplastics Guidance Document. To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/itrc/Microplastics_030625/

Solid mining waste represents a significant quantity of waste material in the United States and around the world. Solid mining waste has a range of physical and chemical properties that make it both potentially valuable and potentially hazardous to human health and the environment. From a commercial perspective, mining removes most of the primary minerals of interest; however, waste materials can still contain valuable minerals and other materials that can be recovered. The different types of mining sites and potential wastes for reuse provide a significant challenge but also an opportunity for innovation. Improvements in extraction and mineral processing technologies have occurred over time making it possible to recover minerals present in low concentrations. Interest in trace metals and rare earth elements (REEs) has increased, especially with the drive towards renewable energy sources increasing demand for key minerals required for solar panels and batteries. The reuse of solid mining waste can consist of reprocessing and repurposing the waste for resource recovery or a new application or product. This reuse serves as a solution to two significant needs:a domestic supply of minerals and materials for sustainable development and national defense purposesthe reclamation and remediation of land to reduce risks to human and environmental health The ITRC Reuse of Solid Mining Waste training and guidance document is geared towards state regulators and environmental consultants, mining and manufacturing stakeholders, community and tribal stakeholders, and other who have an interest in the potential reuse of solid mining waste. The guidance and this associated training course includes:Mining wastes introductionConsiderations for reusing mining waste: waste characterization, economic and market considerations, life cycle and risk assessment, regulatory considerations, & stakeholder considerationsPotential applications for the reuse of solid mining waste: examples of construction, environmental, and industrial reusesReview of technologies used in mineral beneficiation and processing Additionally, the guidance includes several case studies illustrating a range of current mining waste reuse scenarios. Prior to attending the training class, participants are encouraged to view the associated ITRC Reuse of Solid Mining Waste document. To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/itrc/MiningWaste_021325/

In 2020, ITRC's 1,4-Dioxane team created multiple tools and documents that provide information to assist all interested stakeholders in understanding this contaminant and for making informed, educated decisions. Since the 1950s, 1,4-Dioxane has seen widespread use as a solvent stabilizer. The use of solvents through the 1980s suggests its presence at thousands of solvent sites in the US; however, it is not always a standard compound in typical analytical suites for hazardous waste sites, so it previously was overlooked. The U.S. EPA has classified 1,4-Dioxane as "likely to be carcinogenic to humans." Some states have devised health standards or regulatory guidelines for drinking water and groundwater standards; these are often sub-part per billion values. These low standards present challenges for analysis, characterization, and remediation of 1,4-Dioxane. The 1,4-Dioxane: Science, Characterization & Analysis, and Remediation training is a series of six (6) modules. The six individual modules will be presented together live, and then archived on the ITRC 1,4-Dioxane training webpage for on demand listening. The modular 1,4-Dioxane training series provides an overview of 1,4-Dioxane and presenting six sections from the ITRC guidance document (1,4d-1, 2021):History of Use and Potential Sources (Sect 1)Regulatory Framework (Sect 2)Fate and Transport (Sect 3)Sampling and Analysis (Sect 4)Toxicity and Risk Assessment (Sect 5)Remediation and Treatment Technologies (Sect 6)After the six-part 1,4-Dioxane: Science, Characterization & Analysis, and Remediation series, you should understand:The history of 1,4-Dioxane manufacturing and usage and the potential sources of releases of 1,4-Dioxane to the environment.Primary state and U.S. federal regulatory programs of relevance to 1,4-DioxaneKey physical/chemical properties, and fate and transport processes that are relevant for 1,4-DioxaneBenefits and limitations of the available analytical methodsRisk drivers for human health and how ecological risk comparesHow/when/why different treatment technologies are appropriate We encourage you to use the ITRC 1,4-Dioxane products (14d-1) and these training modules to learn about 1,4-Dioxane and how you can apply these best practices to improve decision-making at your sites. For regulators and other government agency staff, this understanding of 1,4-Dioxane can be incorporated into your own programs. This training summarizes the current understanding of 1,4-Dioxane. While the training makes every effort to keep the information accessible to a wide audience, it is assumed that the participants will have some basic technical understanding of chemistry, environmental sciences, and risk assessment. As with other emerging contaminants, our understanding of 1,4-Dioxane continues to advance. This training provides the participants with information on areas where the science is evolving and where uncertainty persists. To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/itrc/14D-1_020625/

Per- and polyfluoroalkyl substances (PFAS) are a large and complex class of anthropogenic compounds whose prevalence in the environment are an emerging, worldwide priority in environmental and human health. The ITRC PFAS Team, formed in 2017, has prepared readily accessible materials to present PFAS information to stakeholders, regulators, and policy makers. The PFAS team represents a diverse cross-section of expertise and experience working on PFAS. This training will include emerging science on PFAS, including topics such as Properties of PFAS, Fate and Transport, Sampling and Analysis, and Treatment Technologies. The technical presentations will be focused on those who are relatively new to PFAS. The training will last approximately 90 minutes and include time for questions. To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/itrc/PFAS-Introductory_012825/

In 2023, the ITRC Contaminants of Emerging Concern (CEC) Framework was published to help environmental regulatory agencies and other stakeholders identify, evaluate, and manage CEC's while acknowledging uncertainties in their environmental fate and transport, receptor exposure, and/or toxicity. Such an approach can be conducive to improved allocation of regulatory response resources and provide a foundation for communicating potential risk to stakeholders. The ITRC framework is comprised of a white paper and four associated fact sheets. In the white paper, CEC are defined as: "substances and microorganisms including physical, chemical, biological, or radiological materials known or anticipated in the environment, that may pose newly identified risks to human health or the environment." The framework is meant to help environmental regulatory agencies and other stakeholders by providing examples of CEC monitoring programs and guiding the user through the process of identifying CEC key characteristics, how to communicate real and perceived risk from CEC to the public, and how laboratory analytical methods can be used in the identification process.The ITRC CEC training presents this entirely new framework for identification, prioritization, and communication of CEC. This course includes the following topics:An overview of the framework, how and why it was developed, the factors that influence the creation of CEC management units at the state level, and a listing of existing CEC monitoring programs.A discussion of key variables that may be used as criteria to identify and prioritize CEC for response actions. This portion of the course includes a case study that illustrates how the identification and prioritization process works with an "unknown" chemical CEC.Practices and methods for stakeholder messaging and how to share incomplete information on CEC that could impact human health and the environment. This portion of the short course builds upon the ITRC Risk Communication Toolkit by providing additional detail addresses communications plans, message maps, and audience identification.A paradigm for how laboratory methods can be used to identify CEC ranging from: "Is compound X in the sample and at what concentration?" (i.e., known knowns) to"Which compounds from the list are in this sample?" (i.e., known unknowns) to"What is in the sample?" (i.e., unknown unknowns). CEC are typically compounds or substances whose occurrence or effect is unknown but may or may not be understood through similar compounds or substances. This module includes a discussion of the use of targeted and untargeted analysis to identify a CEC.Participants will learn the elements of the CEC framework and gain an understanding of the framework application from case studies. Participants are encouraged to review the ITRC CEC Framework prior to the class. To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/itrc/CEC_011625/

In October 2024, ITRC released the 6PPD & 6PPD-quinone Guidance Document to provide environmental professionals and communities with information about the current science and regulatory framework of 6PPD and 6PPD-quinone (6PPD-q). 6PPD-q is a contaminant of emerging concern and is a transformation product of the tire anti-degradant (6PPD), an antiozonant used in tires. Join us for this ITRC training course to get a basic overview of the science and policy measures surrounding the Tire Anti-Degradants 6PPD and 6PPD-q. Attendees will gain insight into the current state of knowledge on topics such as: background and use of 6PPD in tires, toxicity in aquatic species and humans; occurrence, fate, and transport; measuring, mapping, and sampling; mitigation measures; and policy, regulations, and laws. Currently, 6PPD is used in all tires and can contaminate stormwater and surface water anywhere tires are used. 6PPD-q was identified as a chemical fatal to coho salmon in 2020. Since that time, it has been documented as acutely toxic to multiple trout species found throughout the United States. 6PPD and 6PPD-q have been found in waterways, aquatic organisms, soils, air, and humans. This training will introduce you to the ITRC 6PPD & 6PPD-quinone Guidance Document which provides more technical detail than can be covered in this training course To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/itrc/6PPD-Q_011425/

Thermal remediation technologies became commercially available in the early 2000s, and since then have been used successfully to remediate a wide variety of contaminated sites. This presentation will discuss several case studies of some of the more challenging Superfund sites that have been remediated with thermal technologies, and how challenges were overcome. To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/tio/ThermalRemediation_010825/

Thermal technologies are some of the only remedial technologies that can readily address NAPL contaminants. This presentation will describe the thermal technologies that are commonly used today, and the types of contaminants and hydrogeologic conditions for which they are applicable. To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/tio/ThermalRemediationNAPL_010725/

With an understanding of the characteristics of NAPLs, how they flow in soils, and the capabilities of the tools available for remedial investigations, approaches can be developed for determining the extent of NAPLs in the subsurface and making estimations of the contaminant mass. This presentation will describe the Triad approach for characterizing NAPL sites to determine the contaminant distribution, and the geologic and hydrogeologic properties of the subsurface that are critical for determining a technically sound remedial approach. To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/tio/NAPLCharacterization_121924/

A wide variety of organic wastes, commonly referred to as nonaqueous phase liquids (NAPLs), are contaminating soils and groundwater. The physical properties of these NAPLs, including their density, volatility, and viscosity determine how they flow through soils, and understanding their flow in soils is key to understanding how to characterize and remediate NAPL sites. This presentation will include the properties of common NAPLs and describe how they migrate in soils. Future presentations will discuss approaches to characterizing NAPL sites, and how NAPLs can be remediated using thermal remediation techniques. To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/tio/NAPLMigration_121824/

Coordinating with Tribes at Federal Facilities is a two-hour webinar course that will provide an overview of Environmental Protection Agency (EPA) policy on consultation and coordination with Indian Tribes at federal facilities. This webinar will also provide tips on how to work more collaboratively during this process. By taking this course, participants will achieve the following objectives:Identify EPA processes and policies for interacting with the Tribes;Understand the roles of EPA and tribal governments in Federal Facility clean ups;Learn about the Federal Facilities Restoration and Reuse Office (FFRRO); and,Discover EPA resources and tools available to assist Federal Facilities in building partnerships with the Tribes;The instructional methodology for this course includes lecture, group discussions, and case studies. The target audience for this course is federal, state, and tribal representatives who work on Federal Facility cleanups. Ideally, students should have a basic understanding of the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) process. This course is part of the Federal Facilities Academy training program. Please consider registering for other Federal Facility Academy courses and obtain a certificate upon completion of the entire Federal Facility Academy series (12 courses total). To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/tio/FFAcademy10_121224/

Petroleum is a complex mixture of many compounds. Regulatory and technical guidance documents commonly focus on the hydrocarbon components of that mixture, or perceived risks that they present. However, focusing on a specific area of concern often causes practitioners to overlook other aspects of a release. For example, concerns related to exposure to total petroleum hydrocarbons (TPH) risks may be overlooked while pursuing concerns related to light non-aqueous phase liquid (LNAPL) recovery or petroleum vapor intrusion (PVI). This class is designed to provide a basic overview of hydrocarbon behavior in the subsurface and how to scientifically assess concerns arising from the release of petroleum products into the environment. It will highlight key issues that help identify and manage TPH, LNAPL, and PVI risks together. Key concepts will include: Fundamentals of petroleum hydrocarbonsPetroleum chemistryHow TPH, LNAPL, and PVI are relatedBuilding an integrated conceptual site model (CSM) What is a CSM…what is its purpose?When is a CSM complete?Identifying and managing the risks from petroleum hydrocarbonsDefining LNAPL risks based on acute, saturation, composition, or aesthetic concernsEmphasize the importance of biodegradation in risk management decision makingHow to select remedial goals and remedies that align with your goals This course is based upon three separate Guidance Documents developed by ITRC that address the course content in detail:Light Non-Aqueous Phase Liquid (LNAPL), LNAPL Site Management: LCSM Evolution, Decision Process, and Remedial Technologies (LNAPL-3) Petroleum Vapor Intrusion (PVI), Fundamentals of Screening, Investigation, and Management (PVI-1) Total Petroleum Hydrocarbon (TPH), TPH Risk Evaluation at Petroleum-Contaminated Sites (TPHRisk-1) To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/itrc/Hydrocarbons_120524/

Tracking Restoration And Closure (TRAC) is a web-based application that combines infographics, annual statistics, and historical facts to clearly communicate the current status of groundwater contamination cleanup efforts at Department of Energy Office of Environmental Management (DOE-EM) sites across the nation.  TRAC is a tool to share information about and provide transparency into environmental remediation progress at these cleanup sites.  With TRAC, users can explore robust and consistent geospatial visualization of contaminants of concern above the regulatory cleanup concentrations at three levels of detail:  EM complex, EM site, and waste management unit.  Each level includes narrative information on key topics, such as cleanup challenges/priorities and technology approaches, and metrics about contaminant plumes, regulatory context/status, and remedy technologies/implementation status. To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/tio/FRTR-TRAC_120424/

The NIEHS Superfund Research Program (SRP) is hosting a Risk e-Learning webinar series focused on using artificial intelligence (AI) and machine learning to advance environmental health research. The series will feature SRP-funded researchers, collaborators, and other subject-matter experts who aim to better understand and address environmental health issues by applying AI and machine learning approaches to complex issues. Recent advances in AI and machine learning methods show promise to improve the accuracy and efficiency of environmental health research. Over the course of three sessions, presenters will discuss how they use AI and machine learning approaches to improve chemical analysis, characterize chemical risk, understand microbial ecosystems, develop technologies for contaminant removal, and more. In the third and final session, ML & AI Applications to Understand Omics, Metabolomics, & Immunotoxicity and Optimize Bioengineering Using Datasets, Models, and Mass Spectrometry, speakers will discuss how they apply machine learning and artificial intelligence tools to analyze mass spectrometry and microscopy data and optimize models for understanding metabolomics, metabolite pathways, and immunotoxicology To learn about and register for the other sessions in this webinar series, please see the SRP website. Grace Peng, Ph.D., is a co-coordinator of the National Institutes of Health (NIH) Common Fund's Bridge to Artificial Intelligence (Bridge2AI) program, bridging the gap between the biomedical, behavioral and bioethics research communities and the data science/AI communities through a consortium of diverse experts to set the stage for widespread adoption of AI/ML in medicine. Dr. Peng will give an overview of the Bridge2AI program and introduce one of their projects at the University of California San Diego — Trey Ideker, Ph.D. Dr. Ideker will discuss the cell maps for AI (CM4AI) functional genomics project, one of four major data generation projects under the Bridge2AI program. The goal of the project is to provide a comprehensive map of human cellular components through generation of major spatial proteomics datasets. John Efromson, M.S., will present on Ramona Optic, Inc.'s Multi-Camera Array Microscope [MCAM(TM)], which is used to automate imaging and computer vision analysis of zebrafish and greatly improves previous throughput and analysis capabilities. Multiple applications of machine learning will be discussed, including behavioral pose estimation and phenotyping, morphological analysis, and cell counting and fluorescence quantification, as well as how these distinct analyses can be used together for pharmacology, toxicology, and neuroscience research. Speakers:Grace C.Y. Peng, Ph.D., Division of Discovery Science and Technology (Bioengineering), National Institute of Biomedical Imaging and Bioengineering and Trey Ideker, Ph.D., University of California San DiegoJohn Efromson, M.S., Ramona OpticsForest White, Ph.D., Massachusetts Institute of Technology (MIT)Moderator: Hunter Moseley, Ph.D., University of Kentucky To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/tio/SRP-ML-AI3_112224/

In 2023, ITRC published the Sediment Cap Chemical Isolation Guidance to supplement the 2014 Contaminated Sediments Remediation Guidance with the goal of improving consistency in sediment cap performance outcomes. Sediment capping is a commonly selected remediation approach and numerous designs have been completed. Previous cap designs have been evaluated in multiple ways, and these varying approaches have led to some differences in selection of chemical design criteria, construction tolerance specifications, and monitoring/maintenance objectives for sites with similar characteristics and contaminants, leading to different expectations for long-term performance and reliability. The ITRC Sediment Cap Chemical Isolation Guidance provides a framework for the design, construction, and long-term monitoring of the chemical isolation function of sediment caps. The framework consists of an iterative design process informed by site-specific data that balances achievement of chemical design criteria, physical design constraints, constructability and permitting requirements. In addition, the guidance summarizes key construction considerations and presents a recommended approach for monitoring and evaluating long-term chemical isolation performance. The recommended framework presented in the Sediment Cap Chemical Isolation Guidance is illustrated below. The Sediment Cap Chemical Isolation Training will cover several key elements of the recommended framework, including: A capping overview that summarizes objectives of capping, role of the chemical isolation layer, and generic cap types and compositions. A discussion of performance objectives and design concepts that includes the selection of chemical isolation performance targets criteria and development of design criteria while considering the site setting and conceptual site model elements. An overview of chemical isolation layer modeling tools and discussion of their applicability to support chemical isolation design, important model input parameters, and the impact of uncertainty and sensitivity of modeling results. A summary of chemical isolation construction considerations, including an overview of available construction methods and tolerances and quality assurance and quality control measures. A discussion of cap performance monitoring and maintenance objectives and approaches that include developing monitoring objectives to assess chemical isolation performance and methods for guiding long-term maintenance decisions. We encourage participants to review the ITRC Sediment Cap Chemical Isolation Guidance (SD-1) before and after the training to become familiar with the topics and recommendations discussed during the training. This training is intended for all environmental professionals working in the field of sediment capping projects, including regulators and other government agency staff, consultants, project stakeholders, and industry. To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/itrc/sd-1_112124/

The NIEHS Superfund Research Program (SRP) is hosting a Risk e-Learning webinar series focused on using artificial intelligence (AI) and machine learning to advance environmental health research. The series will feature SRP-funded researchers, collaborators, and other subject-matter experts who aim to better understand and address environmental health issues by applying AI and machine learning approaches to complex issues. Recent advances in AI and machine learning methods show promise to improve the accuracy and efficiency of environmental health research. Over the course of three sessions, presenters will discuss how they use AI and machine learning approaches to improve chemical analysis, characterize chemical risk, understand microbial ecosystems, develop technologies for contaminant removal, and more. In the second session ML & AI Applications to Environmental Engineering Contaminants & Bioremediation, invited presenters will discuss how they apply machine learning and artificial intelligence to environmental engineering applications including contaminants and bioremediation using biosensors, microbiome compositions, and screening tools. To learn about and register for the other sessions in this webinar series, please see the SRP website. Kei-Hoi Cheung, Ph.D., has an extensive history in data science, and has leveraged that expertise to lead natural language processing (NLP) projects in annotating, extracting, and retrieving environmental exposure data. He will present on the use of these NLP methods combined with ontologies in the in the context of scientific literature on emerging water contaminants. Mohammad Soheilypour, Ph.D., will discuss the application of a suite of computational methods to identify and predict microbial metabolism of various chemical compounds, with a focus on gut and environmental microbiomes. Specifically, he will cover the potential application of machine learning models in this context and their integration with other computational methods to enhance both accuracy and utility. Paul Westerhoff, Ph.D., will highlight the work of his research team utilizing and comparing two advanced multiple data imputation techniques, AMELIA and MICE algorithms, to fill gaps in sparse groundwater quality datasets to support State agencies in prioritizing future sampling activities. Historic water quality databases are often sparse due to financial budgets for collection and analysis, posing challenges in evaluating exposure or water treatment effectiveness — and this project aims to account for those by accurately assessing and managing risks associated with inorganic pollutants using this technology. Speakers:Kei-Hoi Cheung, Ph.D., Yale University School of MedicineMohammad Soheilypour, Ph.D., Nexilico Inc.Paul Westerhoff, Ph.D., Arizona State UniversityModerator: Rodrigo Rimando, U.S. Department of Energy To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/tio/SRP-ML-AI2_112024/

Groundwater Policy and Federal Facilities Overview is a two-hour webinar course that provides an overview of U.S Environmental Protection Agency (EPA) groundwater policies and guidance with emphasis on cleanups at federal facilities. By taking this course, participants will achieve the following objectives:Identify EPA groundwater policies;Understand groundwater classification and beneficial use in restoration objectives;Understand nature and extent considerations from groundwater contaminant plumes;Explore applicable or relevant and appropriate requirements (ARARs) commonly associated with groundwater remedies;Identify groundwater considerations for monitored natural attenuation (MNA), institutional controls, and technical impracticability waivers; and,Discover information on major groundwater policies from other federal agencies, such as Department of Defense (DoD) and Department of Energy (DoE).The instructional methodology for this course includes lecture and quizzes. The target audience for this course is federal, state, and tribal representatives who work on Federal Facility cleanups. Ideally, students should have a basic understanding the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA). This course is part of the Federal Facilities Academy training program. Please consider registering for other Federal Facility Academy courses and obtain a certificate upon completion of the entire Federal Facility Academy series (12 courses total). To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/tio/FFAcademy7_111324/

In response to one of the biggest emerging environmental concerns, ITRC formed the Microplastics Team in 2021 to develop the Microplastics Guidance Document. Plastics have become pervasive in modern life and are now used in a wide range of commercial and industrial applications. Microplastics may result from the degradation and fragmentation of larger plastics, or they may be intentionally produced for specific applications and products. Regardless of their origin, microplastics are now ubiquitous in our environment. Because of their small size and pervasiveness in the environment, microplastics, along with any other contaminants which are adhered to the microplastics, may be inadvertently consumed by humans and other organisms. The online ITRC Guidance Document is geared toward an audience with reasonable level of scientific understanding, but not microplastic-specific knowledge. The guidance provides a user with information on microplastics and the state of the applied science without having to go to the scientific literature. The target audience for the guidance and this training course includes state regulators and environmental consultants, as well as community and tribal stakeholders. The guidance and this associated training course uses a conceptual site model to navigate microplastics in the environment and explore the following general areas:An introduction to microplastics, their sources, and worldwide distributionThe pathways through which microplastics can enter and travel in the environment and their distribution in various media (water, soil, sediment, air, and biota) A current look at the most common techniques and best practices for sampling and analyzing microplasticsPotential human health and ecological risks associated with microplastics in the environmentAn overview of existing regulations related to microplastics and macroplastics at the state, federal, and international levelsExamples of prevention and mitigation strategies and best management practices to reduce microplastics from entering the environment and the emerging technologies to abate, treat, and remediate microplastics once they exist in the environment Identification of data gaps and the need for further researchSeveral case studies illustrating a range of current microplastics-related topicsPrior to attending the training class, participants are encouraged to view the associated ITRC Microplastics Guidance Document. To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/itrc/Microplastics_110724/

The NIEHS Superfund Research Program (SRP) is hosting a Risk e-Learning webinar series focused on using artificial intelligence (AI) and machine learning to advance environmental health research. The series will feature SRP-funded researchers, collaborators, and other subject-matter experts who aim to better understand and address environmental health issues by applying AI and machine learning approaches to complex issues. Recent advances in AI and machine learning methods show promise to improve the accuracy and efficiency of environmental health research. Over the course of three sessions, presenters will discuss how they use AI and machine learning approaches to improve chemical analysis, characterize chemical risk, understand microbial ecosystems, develop technologies for contaminant removal, and more. In the first session, AI & ML Applications to Understand Chemical Mixtures, Properties, and Exposures and their Relationship to Human Health, speakers will discuss how they apply machine learning and artificial intelligence techniques to understand chemical exposures and their effects on human health. To learn about and register for the other sessions in this webinar series, please see the SRP website. Naomi Halas, Ph.D., and Ankit Patel, Ph.D., will share updates on their work combining surface-enhanced spectroscopies (Raman and Infrared Absorption) with machine learning algorithms with the goal of developing simple and ultimately low-cost methods for the detection and identification of environmental toxins. As part of their discussion, they will share several approaches, including the use of machine learning algorithms to detect individual constituents in complex mixtures and the use of facial recognition strategies to identify specific chemical toxins in human placenta. Jacob Kvasnicka, Ph.D., will present on a project he supported while he was a postdoctoral researcher at Texas A&M University SRP Center's Risk and Geospatial Sciences Core. There, his work involved developing an ML framework for predicting safe exposure levels to chemicals to avoid cancerous and reproductive/developmental effects. Most chemicals lack toxicity data related to human health, and this study uses ML to fill this gap, greatly expanding the ability to characterize chemical risks and impacts. Trey Saddler will give attendees an overview of ToxPipe — a platform for performing retrieval augmented generation (RAG) over toxicological data. Comprised of a web interface, agentic workflows, and connections to various data sources, ToxPipe enables toxicologists to explore diverse datasets and generate toxicological narratives for a wide range of compounds. Speakers:Naomi Halas, Ph.D., and Ankit Patel, Ph.D., Rice UniversityJacob Kvasnicka, Ph.D., U.S. Environmental Protection AgencyTrey Saddler, NIEHS, Division of Translational ToxicologyModerator: David Reif, Ph.D., NIEHS, Division of Translational Toxicology To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/tio/SRP-ML-AI1_110424/

The NIEHS Superfund Research Program (SRP) presents a "Virtual Technology Fair" featuring Small Business Innovative Research (SBIR) grant recipients developing innovative solutions for lead (and other metals) in water. Speakers will give a "pitch", showcasing the work underway and its value-added to disrupt the market. We encourage participation by and questions from potential end-users, customers, and other stakeholders to accelerate technology transfer of these promising approaches. To learn more about the NIEHS SBIR program, please see the SRP Funding Opportunities webpage. To learn more about and register for other SRP events, please visit the SRP events website. Presentation Summaries: NIEHS SBIR Funding Opportunities: the NIEHS Superfund Research Program's Heather Henry, PhD, will provide an overview of the NIEHS SBIR program, including information for potential applicants. GlycoSurf, LLC: Chett Boxley, Ph.D., and Raina Maier, Ph.D., of GlycoSurf, LLC, will discuss technologies developed to remove uranium, lead, and rare earth elements from both groundwater and complex mining solutions. With funding from an SBIR grant, GlycoSurf researchers collaborated with scientists at the University of Arizona and Wayne State University to develop environmentally friendly glycolipid surfactants to remove metal from aqueous mining wastestreams. They have developed two approaches:  an ion flotation process in which surfactants complex with target metals and are removed from the solution with bubbles, and a functionalized resin technology that removes metals through a selective sorption process. ElectraMet: Lindsay Boehme, Ph.D., of PowerTech Water, Inc. (d/b/a/ ElectraMet), will discuss an electrochemical POU device designed to remove lead from water. Developed with funding from an SBIR grant, the device uses activated carbon electrodes and a small electrical current to induce reactions that remove lead from the water. The device will fit under a standard sink, have an attainable price point, and be able to process more water than current treatment options. Stemloop, Inc.: Khalid Alam, Ph.D., of Stemloop, Inc., will discuss an innovative monitoring technology that provides users with on-site and on-demand monitoring of lead in drinking water. Developed with funding from an SBIR grant, the team's paper-based devices use repurposed biological sensor proteins that produce detectable signals when lead is present. Adding water activates the device to produce a visual signal when lead is present. NanoAffix Science, LLC: James Hill, Ph.D., of NanoAffix Science, LLC, will discuss the NAFX Handheld Lead Tester. With funding from an SBIR grant, the device was developed in response to the lead laden drinking water crisis in Flint, Michigan. Relying on innovations in accurate particulate lead predictions, sensor device uniformity, and calibration accuracy, the NAFX Handheld Lead Tester is the first of its kind to offer users accurate, cheap, and fast detection of all three types of lead: total lead (indicative of overall toxicity), soluble lead (indicative of slow leaching of lead), and particulate lead (indicative of sporadic flaking of lead). To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/tio/SRP-VTF-Pb_102824/

RCRA and CERCLA Integration at Federal Facilities is a two-hour webinar course that will provide an overview of how the Resource Conservation and Recovery Act (RCRA) and the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) can be integrated at Federal Facilities through use of Federal Facility Agreements, regulator coordination, and lead regulator approach. By taking this course, participants will achieve the following objectives:Learn about Federal Facility Agreements and how they identify RCRA and CERCLA roles and responsibilities;Explore relevant memos and policies addressing RCRA and CERCLA coordination; and,Become familiar with some RCRA policies that apply to CERCLA wastes.The instructional methodology for this course includes lecture, case studies, and quizzes. The target audience for this course is federal, state, and tribal representatives who work on Federal Facility cleanups. Ideally, students should have a basic understanding of RCRA and CERCLA. This course is part of the Federal Facilities Academy training program. Please consider registering for other Federal Facility Academy courses and obtain a certificate upon completion of the entire Federal Facility Academy series (12 courses total). To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/tio/FFAcademy6_102424/

The ITRC Managed Aquifer Recharge (MAR-1) Training is intended for state regulators and stakeholders who may not be familiar with the opportunities and challenges associated with MAR. It provides a basic understanding of MAR concepts, along with case studies, that showcase examples of successful MAR applications. For those who are familiar with MAR, the training gives an overview of the components of the MAR process along with the important considerations associated with each component necessary for the design and implementation of a MAR project. It is important to understand that MAR is an area of active research and expanding practical applications, and that this management process is continuing to evolve with time.The combination of climate change and growing demand for fresh water has resulted in an increase in the vulnerability and scarcity of freshwater supplies around the world. The need for fresh water to grow crops and provide for the welfare of the general population, economic growth, and ecosystems is becoming more acute. In the past 50 years, the amount of water withdrawn for human use has tripled. MAR is becoming an increasingly important method for improving and supplementing subsurface freshwater storage and ecosystems with an additional benefit of reducing flood risk, managing stormwater, mitigating subsidence, and controlling saltwater intrusion. Training ObjectivesUnderstand MAR and its applications.Recognize MAR as a process rather than a single technology. Acknowledge that MAR can be widely applied.Understand MAR's role in the future for addressing water supply resilience and climate impacts.Training GoalsProvide a model of the MAR process illustrating the primary components and their interaction.Provide an overview of the applications of MAR and the role in addressing climate change impacts through sustainability and resilience in water resources management.Provide information on each component of MAR and the critical considerations for each component in the design of a MAR project.Reference case studies illustrating the various applications of MAR.After the MAR Training, the audience will have the tools necessary to understand MAR and how it can be used as a water resource management tool that encompasses a wide variety of water sources, recharge methods, and storage management practices. The audience will develop an understanding of MAR and its importance in achieving sustainability, resilience, and the far-reaching benefits of MAR related to water supply and quality, mitigation of saltwater intrusion, flood control, and ecological habitats. This training will provide information about the components of a MAR project to help regulators, practitioners, and stakeholders in the development and review of a MAR project.Recommended Reading: Participants are strongly encouraged to review the ITRC Managed Aquifer Recharge document prior to participating in the training class. To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/itrc/MAR_101724/

US EPA's Office of Research and Development (ORD) is sponsoring a presentation on electrokinetic (EK)-enhanced in situ remediation technologies that are available for addressing contaminants in low-permeability (low-k) subsurface environments where conventional hydraulic delivery technologies often face challenges. The presentation introduces ORD's recently published Engineering Issue Paper (EIP) on the technology. The primary author will present on EK technologies and provide insights to the user community on ways to best utilize the EIP. ORD's EIPs are a series of technology transfer documents that summarize the latest information on selected waste treatment and site remediation technologies and related issues and present it in a conveniently accessible manner to the user community. EIPs are designed to help remedial project managers (RPMs), on-scene coordinators (OSCs), contractors, and other contaminated sites technical staff and site managers understand the type of data and site characteristics that are needed to evaluate a technology for a specific site, as well as ways to design and optimize a technology for a particular application. To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/tio/Low-K-Enviro_092624/

The EPA-administered Greenhouse Gas Reduction Fund (GGRF) will be investing $27 billion in federal resources, and mobilizing significant additional private capital, over the next five to seven years to address the climate crisis. Among GGRF-eligible clean energy investments are renewable energy projects on contaminated sites such as brownfields, landfills, and former mine lands. In this webinar, learn how some GGRF grantees could support financing for renewables on contaminated sites and how others may choose to consider clean energy redevelopment of these sites. The webinar is timely because EPA recently obligated funds to GGRF state, tribal, and multi-state nonprofit grantees, meaning that some GGRF grantees are now able to begin accessing their funds to implement their GGRF financing programs. Other GGRF grantees are starting a one-year planning period to engage with their communities and finalize financing program designs.    The webinar will include an update on GGRF's three programs — the National Clean Investment Fund, the Clean Communities Investment Accelerator, and the Solar for All program — from EPA program leadership as well as a panel discussing creative renewable energy strategies for contaminated sites under GGRF.   The GGRF panel discussion and Q&A with federal and state officials and a renewable energy developer will educate state, tribal, and other government agency officials and their stakeholders on how:Federal GGRF finance funding can spur further private capital to significantly accelerate renewable energy development;GGRF-funded programs may achieve additional, local redevelopment benefits by encouraging renewable energy in low-income and disadvantaged communities where contaminated lands are often located;New community solar projects can be a key mechanism for expanding solar access for low-income residential customers;Community solar represents the fastest-growing revenue model for contaminated site renewable projects nationally;An agency can pursue renewables on contaminated lands within GGRF financing sources if it wishes to do so; andTo find additional EPA resources to support development of renewable energy on contaminated sites.  For information on the Greenhouse Gas Reduction Fund, please see: https://www.epa.gov/greenhouse-gas-reduction-fund. For information on the 60 Solar for All grantees selected for a cumulative $7 billion in awards, please see: https://www.epa.gov/greenhouse-gas-reduction-fund/solar-all. To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/tio/GGRF-Opportunities_092524/

RODs [Records of Decision] and More at Federal Facilities is a two-hour webinar course that will provide an overview of how early and interim actions, adaptive management, RODs, Explanations of Significant Differences (ESDs), and ROD Amendments are used at Federal Facilities. By taking this course, participants will achieve the following objectives:Understand how removal actions, sampling and analysis plans, and decision documents are used at Federal Facilities;Learn about the Environmental Protection Agency (EPA) and Department of Energy (DoE) Joint Policy Memo;Identify how Interim Actions can be used as part of an overall cleanup strategy; and,Learn the process for changing remedies after a ROD is issued.The instructional methodology for this course includes lecture, group discussions, case studies, and quizzes. The target audience for this course is federal, state, and tribal representatives who work on Federal Facility cleanups. Ideally, students should have a basic understanding of the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) process. This course is part of the Federal Facilities Academy training program. Please consider registering for other Federal Facility Academy courses and obtain a certificate upon completion of the entire Federal Facility Academy series (12 courses total). To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/tio/FFAcademy2_091224/

In 2020, ITRC's 1,4-Dioxane team created multiple tools and documents that provide information to assist all interested stakeholders in understanding this contaminant and for making informed, educated decisions. Since the 1950s, 1,4-Dioxane has seen widespread use as a solvent stabilizer. The use of solvents through the 1980s suggests its presence at thousands of solvent sites in the US; however, it is not always a standard compound in typical analytical suites for hazardous waste sites, so it previously was overlooked. The U.S. EPA has classified 1,4-Dioxane as "likely to be carcinogenic to humans." Some states have devised health standards or regulatory guidelines for drinking water and groundwater standards; these are often sub-part per billion values. These low standards present challenges for analysis, characterization, and remediation of 1,4-Dioxane. The 1,4-Dioxane: Science, Characterization & Analysis, and Remediation training is a series of six (6) modules. The six individual modules will be presented together live, and then archived on the ITRC 1,4-Dioxane training webpage for on demand listening. The modular 1,4-Dioxane training series provides an overview of 1,4-Dioxane and presenting six sections from the ITRC guidance document (1,4d-1, 2021):History of Use and Potential Sources (Sect 1)Regulatory Framework (Sect 2)Fate and Transport (Sect 3)Sampling and Analysis (Sect 4)Toxicity and Risk Assessment (Sect 5)Remediation and Treatment Technologies (Sect 6)After the six-part 1,4-Dioxane: Science, Characterization & Analysis, and Remediation series, you should understand:The history of 1,4-Dioxane manufacturing and usage and the potential sources of releases of 1,4-Dioxane to the environment.Primary state and U.S. federal regulatory programs of relevance to 1,4-DioxaneKey physical/chemical properties, and fate and transport processes that are relevant for 1,4-DioxaneBenefits and limitations of the available analytical methodsRisk drivers for human health and how ecological risk comparesHow/when/why different treatment technologies are appropriate We encourage you to use the ITRC 1,4-Dioxane products (14d-1) and these training modules to learn about 1,4-Dioxane and how you can apply these best practices to improve decision-making at your sites. For regulators and other government agency staff, this understanding of 1,4-Dioxane can be incorporated into your own programs. This training summarizes the current understanding of 1,4-Dioxane. While the training makes every effort to keep the information accessible to a wide audience, it is assumed that the participants will have some basic technical understanding of chemistry, environmental sciences, and risk assessment. As with other emerging contaminants, our understanding of 1,4-Dioxane continues to advance. This training provides the participants with information on areas where the science is evolving and where uncertainty persists. To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/itrc/14D-1_090524/

The management of perfluoroalkyl and polyfluoroalkyl substances (PFAS) is an issue of global concern. Across the world, countries are developing their own methods and approaches to managing PFAS. The United States Environmental Protection Agency (US EPA) has partnered with the Common Forum on Contaminated Land for this webinar to highlight PFAS policy, actions and guidance in the United States Superfund Program, select countries within the European Union (EU), and Australia. The purpose of this webinar is to provide information on PFAS management approaches in the US, EU, and Australia to encourage knowledge transfer and information exchange to increase the awareness of how PFAS is being managed in different parts of the world and what research is telling us about the destruction and disposal of PFAS. The topics this webinar will cover include the following: Comparative approaches to PFAS contaminated soil management in the EU, Australia, and the United StatesCooperation at European level to tackle PFAS in soil and groundwaterEuropean policymakers have set up various forms of cooperation to coordinate the approach to PFAS in soil and groundwater. Such as the Common Forum PFAS team, the establishment of the EmConSoil network and the collaboration of four European countries. Common Forum's PFAS team also works closely with NICOLE's PFAS working group.The U.S. EPA's recent actions and key guidances for managing PFAS PFAS pollution and agricultural land use - a German example If arable land is contaminated with high levels of PFAS, the substances also find their way into feed and food. Large-scale contamination can hardly be remediated. A system of pre-harvest monitoring and cultivation recommendations has been established in one region of Germany to ensure that the land can still be used for agricultural purposes. To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/tio/PFAS-Mgmt-Strat_082624/

As a result of past military training and weapons testing activities, unexploded ordnance (UXO) exist on sites designated for Base Realignment and Closure (BRAC) on Formerly Used Defense Sites (FUDS) and other closed ranges on active installations. Munitions ranging in size from 20-mm projectiles to 2000-pound bombs can be distributed on the surface or buried at these sites showing no visible evidence of their presence. SERDP and ESTCP successfully developed and demonstrated technologies that are now widely used to detect, classify and remediate UXO on land. The programs currently focus on UXO in the underwater environment. Ponds, lakes, rivers, estuaries, and coastal ocean areas restrict access and significantly impact the performance of technologies that detect munitions. Following a decade of investment, the programs have developed emerging technologies to detect, classify, and localize UXO in the underwater environment. After testing these technologies across established demonstration sites, the programs are now transitioning to deploy them at live sites where UXO are believed to be present. This presentation will walk through several different developed technologies. To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/tio/M2S2-UXO_081524/

Role of Superfund Performance Measures is a two-hour webinar course that will identify the role of performance measures, including environmental indicators, how to justify their status, and how to achieve an under-control status at Superfund sites. By taking this course, participants will achieve the following objectives:Discover the origin and role of Government Performance and Results Act (GPRA) Measures;Explore the different types of internal Environmental Protection Agency (EPA) planning targets reported through the Superfund Enterprise Management System (SEMs) database; and,Learn about Environmental Indicators for Human Exposure and Groundwater Migration and how they are determined.The instructional methodology for this course includes lecture, group discussion, and quizzes. The target audience for this course is federal, state, and tribal representatives who work on Federal Facility cleanups. Ideally, students should have a basic understanding of the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) process. This course is part of the Federal Facilities Academy training program. Please consider registering for other Federal Facility Academy courses and obtain a certificate upon completion of the entire Federal Facility Academy series (12 courses total). To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/tio/FFAcademy9_080824/

To help meet the U.S. Environmental Protection Agency (EPA) Superfund program's mandate to protect human health and the environment from current and potential threats posed by uncontrolled hazardous substance (both radiological and non-radiological), pollutant, or contaminant releases, the Superfund program has developed a human health risk assessment process for contaminated dust indoors as part of its remedial response program. This webinar will describe the process and results from a research project concerning factors that could potentially attribute to adverse risk to human health due to contamination in dust indoors at Superfund sites. This project reviewed models and guidance on assessing protection of humans to exposures from contaminated dust indoor at sites issued or recommended by federal or state governments. To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/tio/StateApproach-IndoorDust_080724/

To help meet the U.S. Environmental Protection Agency (EPA) Superfund program's mandate to protect human health and the environment from current and potential threats posed by uncontrolled hazardous substance (both radiological and non-radiological), pollutant, or contaminant releases, the Superfund program has developed an ecological risk assessment process as part of its remedial response program. This webinar will describe the process and results from a research project concerning factors that could potentially attribute to adverse ecological risk for biota due to radioactive contamination in soil or water at or near Superfund sites. This project reviewed models and guidance on assessing protection of biota to exposures from contamination at sites issued or recommended by federal, state, and foreign governments. To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/tio/EcoRisk_072524/

Superfund uses a risk-based decision framework to assess and manage human exposure to a release and the threat of a release in the environment from pollutants and contaminants. The risk assessment process quantifies the baseline risk from route of exposure (e.g., inhalation, ingestion, etc.) and the toxicity (e.g., cancer and noncancer). Furthermore, when information such as toxicity is not available, the risk assessment may provide a qualitative assessment to inform the risk manager towards a protective remedy. An important aspect is identifying at-risk populations that may be more susceptible to adverse health outcomes due to their vulnerability and sensitivity (e.g., children). However, Superfund has not issued national guidance on how to incorporate or consider concurrent exposure to factors such as psychosocial stress, racial/minority status, low-income and food insecurity, which have been shown to modify risks from chemical releases for at-risk communities. Executive Order 12898 requires EPA to identify and address, as appropriate, disproportionately high and adverse human health or environmental effects of its programs, policies and activity on minority and low-income populations to the greatest extent possible. This webinar will provide an overview of the following topics: superfund risk assessment, chemical stressors, non-chemical stressors, Environmental Justice, screening tools, and superfund site case studies.   To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/tio/SF-HHRA_072324/

Federal Facility Five-Year Review Webinar is a two-hour webinar course that provides an overview of Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) five-year reviews. By taking this course, participants will achieve the following objectives:Understand Five-Year Review purpose and regulatory contextLearn how to prepare and conduct a five-year reviewIdentify the information and data needed to support a protectiveness statementAddress emerging contaminants and options available to ensure that the federal agencies address these contaminantsIdentify the different scenarios when EPA makes an independent finding of the protectiveness of the remedyLearn about similarities and differences between federal and private site five-year reviewsThe instructional methodology for this course includes lecture, case studies, and quizzes. There will also be an opportunity for participants to ask questions. The target audience for this course are federal, state, and tribal representatives who work on Federal Facility cleanups. Ideally, students should have a basic understanding the CERCLA process. This course is part of the Federal Facilities Academy training program. Please consider registering for other Federal Facility Academy courses and obtain a certificate upon completion of the entire Federal Facility Academy series (12 courses total). To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/tio/FFAcademy1_071124/

The U.S. EPA Office of Mountains, Deserts and Plains has launched a new initiative - the Environmental Monitoring and Remediation Technology Assessment Initiative (EMRTAI) - that is focused on innovative technologies to recover critical minerals from waste materials at Superfund legacy hard rock mine and mineral processing sites. The goal of EMRTAI, which is being developed to support stakeholders across the mining industry, is to generate credible data through a quality-driven technology assessment program to promote advancement of innovative technologies and informed decision-making. At present, there are nearly 100 mining or mine-related sites on EPA's Superfund National Priorities List (NPL), and many more sites throughout the U.S. in variable stages of remediation. EMRTAI will advance EPA's mission to protect human health and the environment by assisting technology developers and vendors with performance assessments that target site clean-up and critical minerals recovery technologies as part of sustainable materials management.  Environmental justice is critical to the just treatment and meaningful involvement of all people, regardless of income, race, color, national origin, Tribal affiliation, or disability, in agency decision-making and other Federal activities that affect human health and the environment so that people are fully protected from disproportionate and adverse human health and environmental effects (including risks) and hazards, including those related to climate change, the cumulative impacts of environmental and other burdens, and the legacy of racism or other structural or systemic barriers. EMRTAI will assist public entities such as non-profit organizations, Tribes, industries, businesses, states, individuals, and communities in making better informed decisions when selecting new or existing environmental technologies for use at contaminated sites.  A stakeholder group to support EMRTAI will be forming in July 2024. Please join this webinar to learn more about EMRTAI and how to become involved. To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/tio/EMRTAI_061824/

This training class builds on the earlier information for treatment technologies presented in the PFAS 101 CLU-IN training. It provides more in-depth information regarding considerations for implementing integrated PFAS treatment technologies and remediation strategies. This training introduces the concept that achieving site remedial objectives will likely necessitate the implementation of multiple treatment technologies and remediation strategies (i.e., an integrated remedial strategy). Specifically, this training uses a hypothetical conceptual site model to frame the discussion of remedial approaches for PFAS impacted source area soil, source area groundwater, and more dilute groundwater plumes. The training concludes with a discussion of select field implemented and developing disposal and destructive technologies for managing treatment residuals. Resources and further details for the topics included in this training are in the published PFAS-1 guidance document in Sections 12 and 15 along with referenced tables. Learning Objectives: What types of media, sources, and pathways might require intervention and treatment?How are field-implemented PFAS remediation technologies commonly applied?What developing technologies show promise for PFAS treatment?How may integrated remedial strategies be applied?What are the key considerations for applying field implemented and developing technologies? To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/itrc/PFAS-BTB-Trtmnt_061324/

Resolving Issues Before Formal Dispute is a two-hour webinar course that identifies less formal options to address conflict before going to dispute under a federal facility agreement. This webinar provides project management tips and techniques to address disagreements early in the process . By taking this course, participants will achieve the following objectives:Identify factors that contribute to conflict when working with team members from different agencies;Learn how to prepare a team to handle conflict;Explore tips and techniques to improve communication and come to resolution; and,Understand when formal dispute should be considered.The instructional methodology for this course includes lecture, group discussions, case studies, and quizzes. The target audience for this course is federal, state, and tribal representatives who work on Federal Facility cleanups. This course is part of the Federal Facilities Academy training program. Please consider registering for other Federal Facility Academy courses and obtain a certificate upon completion of the entire Federal Facility Academy series (12 courses total). To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/tio/FFAcademy5_061224/

U.S. Environmental Protection Agency (EPA) and its contractors performing oversight at Superfund Sites review numerical models developed to simulate contaminant transport. An analytical transport model could be used to check the numerical model results but a practical modeling tool based on a 3D analytical solute transport model is not publicly or commercially available. The roles of an analytical model in Superfund oversight are to simulate the general plume behavior; guide the development of, and provide a check for, a more complex numerical solute transport model; and evaluate smaller scale transport such as during natural gradient tracer tests. EPA tasked APTIM to develop an analytical model for solute transport in a three-dimensional aquifer of finite thickness with uniform flow, dual porosity, sorption, sequential decay, and time-dependent source. The new model was verified against existing analytical models for special cases and against numerical models MT3DMS and RT3D, and published in two journal papers. EPA tasked RTI to develop a graphical user interface (GUI) for the model. Example applications are analysis of tracer tests at the Stringfellow Superfund Site and simulation of TCE plume at the Fresno Sanitary Landfill. To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/tio/ASHTM_061024/