RemPlex Seminars
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2023 Presentation Highlights
Assessing Environmental Remediation Technologies: Groundwater and SoilsThis two-part seminar series, jointly hosted by RemPlex and the IAEA, uses case studies to provide an analysis on remedy efficiency, effectiveness, sustainability, availability, complexity, long-term requirements, and more.
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Environmental Behavior and Remediation of Contaminated Sites with Cationic Radionuclides: The Cases of Cs and SrFebruary 14, 2023 A discussion of the current understanding of cesium and strontium behavior in complex contaminated sites, including data on the deposition, distribution, fate, and transport; permeable reactive barriers; and emerging remediation strategies.
2022 Presentation Highlights |
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From the Classroom to Cleanup: Internships in Environmental ScienceDecember 14, 2022 Learn about research being done to address environmental challenges and how you could be part of that through internship programs such as SULI, CCI, MSIPP, SRAP, and YWIS. |
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Chlorinated Solvent Remediation at the Petro-Processors Superfund Site in LouisianaRemediation is underway at the Petro-Processors, Inc., Superfund site north of Baton Rouge, Louisiana. Past practices at the site involved the disposal of liquid wastes that were a mixture of hydrocarbons and chlorinated organics. |
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Using Risk Assessment to Guide Environmental Remediation DecisionsThe primary objective of environmental remediation is to reduce potential exposures to hazardous substances to acceptably safe levels. The determination of cleanup objectives frequently involves the adoption of existing standards, such as... |
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Climate Resilience in Remedial Design and ImplementationEnvironmental remediation of complex sites typically involves the implementation and operation of remedial actions over long time frames. The process of selecting and integrating effective remediation and treatment technologies based on... |
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Source Area Remediation in Complex Subsurface Conditions At Joint Base Lewis-McChordLearn the strategic monitoring approaches and remedy design work to address subsurface contamination from trichloroethene (TCE), which was inadvertently released from deteriorating drums in a Joint Base Lewis-McChord landfill. |
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2021 Presentation Highlights
Visual Sample Plan: Spatial Sampling and Analysis CapabilitiesThe Visual Sample Plan is a geospatial software tool that supports the development of a defensible sampling plan for environmental remediation. Based on statistical sampling theory and the statistical analysis of sample results... |
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Development of Options to Limit Groundwater Impacts from Silo LeakageThe Magnox Swarf Storage Silos is a legacy waste storage facility at the Sellafield Nuclear Site in northwest England. Sellafield Ltd is removing the wastes from the building and exporting them to a modern storage system, but... |
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Moving Beyond Subjectivity: Informed Optimization Concepts in Enhancing Groundwater Extraction and Recirculation Remedy PerformanceA team of experts from environmental consulting firm Arcadis (Chief Hydrogeologist Scott Potter, Vice President Kelly Houston, and Project Hydrogeologist Jennifer Wahlberg) discussed contaminant plume restoration data. |
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Web-Based Data Access and Analysis Workbench to Support Environmental Restoration Decision-MakingPNNL Senior Development Engineer Chris Johnson and Data Scientist Patrick Royer discussed how web-based tools offer an improved approach for working with large environmental data sets. |
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Modeling and measuring the transport of foam in porous media in the presence of nanoparticlesDr. Valentina Prigiobbe with the Stevens Institute of Technology explains a numerical model developed for the analysis of the removal of a contaminant (trichloroethylene, or TCE) from low permeability porous media and provides examples of... |
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Hanford 200-PW-1 Operable Unit Soil Vapor Extraction Endpoint EvaluationChris Johnson, PNNL senior development engineer, and Mark Byrnes, CH2M Hill Plateau Remediation Company project manager, discuss following Soil Vapor Extraction guidance and assessing performance data to present lines of evidence to... |
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2020 Presentation Highlights
Calcium carbonate minerals as scavengers of metals and radionuclides for natural attenuation and remediationCalcium carbonate interactions affect contaminant fate and transport in the subsurface environmental systems. Earth Scientist Amanda Lawter and Lab Fellow Nik Qafoku provide insights on the use of calcium carbonate natural attenuation mechanisms and... |
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Integrating Key Capabilities for the Remediation of Complex SitesPNNL integrates a range of capabilities in multi-scale experimentation, modeling and simulation, and characterization and monitoring to translate science innovation into practical, cost-effective solutions for field implementation. |
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Evaluation Approaches for Transitioning from Active to Passive RemediationIn the context of managing complex sites and phased remedies, there is a need to defensibly support decisions to transition between remediation elements, in particular for transitioning from active to passive remediation. |
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Understanding Environmental Site Conditions: What do we need to know to select and implement effective remedies?Technical information about contaminants, exposure pathways, and factors that affect how candidate remedies perform at a specific site are used to support selecting and implementing environmental remedies. How do we determine the type and extent of... |
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Implications of Uranium Behavior in the Subsurface for Environmental RemediationEnvironmental Engineer Jim Szecsody and Earth Scientist Hilary Emerson share insights gathered from uranium characterization and remediation efforts at the Hanford Site in Washington and at the Rifle Mill Site in Colorado. |
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Introducing the Center for the Remediation of Complex SitesDirector Dawn Wellman discusses how RemPlex fosters technical stewardship, builds partnerships, and advanced the R&D needed to translate science and engineering innovation into practical, adaptive, operational solutions to address complex site remediation. |
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