Since 1998, The Contaminated Site Clean-Up Information (CLU-IN) website has presented Internet Seminars covering a wide variety of technical topics related to hazardous waste characterization, monitoring, and remediation. For each seminar topic, we have selected the highest-quality offering for placement in our archives. Beginning in May 2005, we began offering these archives via podcast, and this feed contains all seminars archived in the last 6 months. For a complete list of seminars archived since 2000 and videos of selected seminars archived since 2012, please visit http://clu-in.org/live/archive/. Our Rehabilitation Act Notice for reasonable accommodation is available at http://clu-in.org/training/accommodation.cfm. CLU-IN was developed by the U.S. Environmental Protection Agency (EPA) but is intended as a forum for all waste remediation stakeholders. For more information and to view upcoming live offerings, please visit http://clu-in.org/live/. For a complete list of RSS feeds available on CLU-IN, please visit http://clu-in.org/rss/about/.
Audio for "EPA Region 2 Forty Years to the Finish - A Case Study of Combe Fill South Landfill Superfund Site," Jan 13, 2021
The Society of American Military Engineers (SAME) Denver Post and Philadelphia Post along with the US Environmental Protection Agency (EPA) are hosting a series of webinars based on talks given at recent Design and Construction Issues at Hazardous Waste Sites (DCHWS) Symposiums. The mission of the DCHWS symposiums is to facilitate an interactive engagement between professionals from government and the private sector related to relevant and topical issues affecting applications of engineering and science associated with cleaning up hazardous waste sites. The symposiums also serve as a platform to facilitate the exchange of information, encourage dialogue, share experiences, and build and enhance communication among design and construction professionals. This presentation is a case study of Combe Fill South Landfill Superfund Site listed on the NPL in 1983 with a record of decision (ROD) in 1986, explanation of significant differences (ESD) in 2000 and amended ROD in 2018. HDR and its predecessor company LMS have been working on this site since its NPL listing in 1983. The presentation will highlight:
How advancements in high resolution analytical and geophysical methods over this time period had a bearing on the original conceptual site model (CSM), and how the application of evolving technologies resulted in investigative and design improvements to achieve the site's remedial action objectives (RAOs).
How the appearance of emerging contaminants - namely 1,4-dioxane - took the remediation timeline through a detour and how delineation and ultimate treatment of emerging contaminants, including PFCs, became the most significant component of this site's history.
The data and decision-making process resulting from numerous bench and pilot scale studies for 1,4-dioxane treatment, as well as various innovative and tried-and-true hydrogeologic evaluations in fractured rock.
The use of new design technologies and software (e.g. LiDAR, Autodesk Recap, Autodesk Revit, BIM 360, etc.) to create a 3D model of the existing groundwater treatment facility, evaluate the potential reuse vs new design, and ultimately complete a new treatment facility design To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/tio/DCHWS13_011321/
Audio for "Superfund Research Program Progress in Research Webinar Part 4: Emerging Exposures," Nov 19, 2020
The NIEHS Superfund Research Program (SRP) Progress in Research webinar series highlights promising research from SRP Centers awarded grants in 2020. In this session, awardees from North Carolina State University, University of Iowa, and Louisiana State University will describe their research projects, accomplishments, and next steps.
The North Carolina State University SRP Center, "Center for Environmental and Health Effects of PFAS," focuses on per- and polyfluoroalkyl substances (PFAS) which are ubiquitous in the environment and have been associated with health effects such as cancer and thyroid, liver, and immune system toxicity. Despite this, these compounds have not been well-studied. Center scientists are investigating human exposure levels to PFAS in impacted areas, PFAS toxicity and the underlying mechanisms behind reduced thyroid and immune function, the potential for PFAS bioaccumulation, and effective remediation approaches for PFAS contamination.
The University of Iowa SRP (ISRP) Center, "Airborne PCBs: Sources, Exposures, Toxicities, Remediation," explores polychlorinated biphenyls (PCBs) and the health impacts stemming from inhalation of these toxic chemicals. Center scientists focus on neurodevelopmental and metabolic effects, particularly in adolescents, and the relationship to novel PCB exposure pathways in buildings such as schools. They aim to identify the mechanisms behind PCB interference with lipid metabolism, define the specific environments that contribute to inhalation exposure and its importance compared to dietary exposure, and develop cost-effective strategies to remove or reduce emissions.
The Louisiana State University SRP Center, "Environmentally Persistent Free Radicals (EPFRs)," studies an emerging class of contaminants which are produced during thermal treatment of hazardous wastes and have been shown to induce cardiac and pulmonary dysfunction in exposed populations. They are investigating mechanisms of EPFR-induced health impacts, determining how EPFRs form, stabilize, and decay, and demonstrating a link between EPFR exposure and poor respiratory health in children. The research goal is to understand how to attenuate EPFR formation, facilitate EPFR decay, and limit exposure to EPFRs. To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/tio/SRPPIR15_111920/
Audio for "FRTR at 30 Years: A Retrospective of Applied Innovative Technologies for Successful Site Remediation," Nov 18, 2020
The Fall 2020 Meeting of the Federal Remediation Technologies Roundtable (FRTR) will be held as a webinar session on Thursday, Nov. 18, 2020. As always, FRTR meetings are open to the public.
FRTR's objectives for this meeting are to:
Provide a retrospective on 30 years of interagency collaboration, technology transfer and advocacy by FRTR to advance technology innovation for site remediation.
Highlight current FRTR initiatives in technology transfer and applied innovative technology that are contributing to successful site remediation. To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/tio/FRTR-Retro_111820/
Audio for "Superfund Research Program Progress in Research Webinar Part 3: Vulnerable Populations," Nov 9, 2020
The NIEHS Superfund Research Program (SRP) Progress in Research webinar series highlights promising research from SRP Centers awarded grants in 2020. In this session, awardees from Northeastern University and University of Alabama at Birmingham will describe their research projects, accomplishments, and next steps.
The Northeastern University SRP Center, "Puerto Rico Testsite for Exploring Contamination Threats (PROTECT)," conducts research on pregnant mothers in Puerto Rico and the relationship between contaminant exposures in drinking water, socioeconomic factors, and adverse pregnancy outcomes. They study a variety of toxicants such as chlorinated volatile organic compounds, phthalates, metals, pesticides, and polycyclic aromatic hydrocarbons and the mechanisms by which these chemicals can contribute to adverse pregnancy outcomes. Center scientists also investigate how extreme weather events can exacerbate exposures and work to develop methods to reduce exposure risk.
The University of Alabama-Birmingham SRP Center, "Impact of Airborne Heavy Metals on Lung Disease and the Environment," studies airborne heavy metal pollution and its impact on respiratory health in the area surrounding the 35th Avenue Superfund site in downtown Birmingham. This community is predominantly African American and has higher levels of chronic lung diseases compared to neighboring control areas irrespective of smoking, socioeconomic status, or demographics. Center scientists are developing tools to measure toxicants in the field, studying the efficacy of materials for contaminant removal, and working to understand the connections between environmental degradation and lung health. To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/tio/SRPPIR14_110920/
Audio for "Superfund Research Program Progress in Research Webinar Part 2: Legacy and Emerging Contaminants (PAHs, PCBs, PFAS)," Oct 28, 2020
The NIEHS Superfund Research Program (SRP) Progress in Research webinar series highlights promising research from SRP Centers awarded grants in 2020. In this session, awardees from University of Kentucky, Oregon State University, and Baylor College of Medicine will describe their research projects, accomplishments, and next steps.
The University of Kentucky SRP Center, "Nutrition and Superfund Chemical Toxicity," explores human health challenges arising from exposure to halogenated organic substances such as polychlorinated biphenyls (PCBs), trichloroethylene, tetrachloroethene, and per- and polyfluoralkyl substances (PFAS). They conduct research on lifestyle changes such as nutrition and exercise and the relationship with pollutant exposure and disease risk. Center scientists also study remediation systems and engineering solutions for toxicant removal. The goal is to develop prevention strategies for diseases associated with chlorinated organic contaminants through a combination of enhanced remediation and healthy lifestyle components.
The Oregon State University SRP Center, "PAHs: New Technologies and Emerging Health Risks," investigates polycyclic aromatic hydrocarbon (PAHs) mixtures before and after remediation. Center scientists work to track PAH movement through the environment, measure PAH exposure in individuals located near contaminated sites, predict the products of PAH transformation during remediation, determine the toxicity of complex PAH mixtures, and link PAH exposure to health outcomes.
The Baylor College of Medicine SRP Center, "PAHs: Ultrasensitive Detection, Early-Life Exposures - Clinical Outcomes (Preterm Births, Chronic Lung Disease, and Neurocognitive Deficits), Prevention and Remediation," works in Harris County, Texas to explore maternal exposure to PAHs and the increased risk of preterm birth. They are investigating the molecular mechanisms behind the increased preterm birth risk after maternal exposure to PAH mixtures. Center scientists are also working to develop methods for detecting PAH-based compounds in air, water, and soil, remediation technologies to treat contaminated sediment, and strategies to prevent and reduce the health burden associated with PAH exposure. To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/tio/SRPPIR13_102820/
Audio for "Superfund Research Program Progress in Research Webinar Part 1: Metals," Oct 21, 2020
The NIEHS Superfund Research Program (SRP) Progress in Research webinar series highlights promising research from SRP Centers awarded grants in 2020. In this session, awardees from Harvard School of Public Health, University of North Carolina-Chapel Hill, and University of Arizona will describe their research projects, accomplishments, and next steps.
The Harvard School of Public Health Center, "Metals and Metal Mixtures: Cognitive Aging, Remediation, and Exposure Sources (MEMCARE)," focuses on understanding the effects of exposure to heavy metals (Pb, As, Mn, Cd, Cr, and Se) and metal mixtures on late-life cognitive health. Center scientists also conduct research on remediation strategies for these exposures to reduce the risk of cognitive decline and memory loss in older populations.
The University of North Carolina-Chapel Hill SRP Center works to address public health challenges related to inorganic arsenic (iAs) contamination of private drinking water wells. Their research explores the biological mechanisms and susceptibility factors underlying diseases associated with iAs exposure, with a focus on diabetes. They also investigate methods for predicting well water contamination by arsenic and other toxic metals, along with removal strategies. Center scientists hope to develop interventions to reduce the prevalence of iAs-associated diabetes and other diseases.
The University of Arizona SRP Center, "Exposures, Health Impacts, and Risk for Mine Waste Contamination," is addressing the unique human health risks encountered in the U.S. Southwest, where distinct geologic and climatic attributes affect human health and exposures to a variety of toxicants, especially arsenic. Arsenic exposure has been linked to the development of diabetes which is especially prevalent in vulnerable populations residing near metal-mining sites. Center scientists are investigating how chronic exposure to arsenic-containing mine waste contributes to the development of diabetes and how exposure can be prevented through a combination of innovations related to the characterization of legacy mine sites and remediation strategies, data science interoperability, and community-engaged health promotion. To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/tio/SRPPIR12_102120/