In this webinar we were pleased to have a special presentation from Paul Erickson, PhD, Director of Research & Development at REGENESIS, and Craig Sandefur, Vice President of Remedial Applications Development at REGENESIS. Their presentation discussed groundwater and contaminant mass flux and a modern approach to measuring, reporting and designing with mass flux data.

This free webinar will cover:

Permeable Reactive Barriers are standard approach for the remediation of large elongate plumes however, PRB’s are particularly sensitive to mass flux. This makes technologies that can directly measure mass flux very valuable. Historically Remediation Practitioners have relied on Water Resource methods (GW Extraction Tests and/or Slug Tests) to measure design critical PRB aquifer characteristics. Unfortunately, these measurement methods generally provide results in terms of aquifer bulk averages and do not identify or measure those contaminant mass flux zones that control contaminant migration. Results of Mass Flux provide a direct measurement and quantification of contaminant concentration measure in milligrams per liter passing through the surface area of an imaginary plane of compliance measured in meters² for a set period of time measured in days. These three variables are exactly what is necessary to design an effective and successful PRB.

REGENESIS has developed a flux measurement tool that has a better form factor (Flux Tracer). This device has significant improvements in the areas of ease of use and reductions in time for field installation and retrieval. This Webinar will discuss the above topics as well as provide examples of REGENESIS Flux Tracer Reports and a brief discussion of the Data (Interpretation/Observations). In addition how REGENESIS designers use Flux Tracer and other mass flux data as direct PRB design inputs.

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About the Presenters:

Paul Erickson, PhD
Director of Research and Development, REGENESIS
Dr. Paul Erickson is the Director of Research & Development with REGENESIS, overseeing the commercialization of new environmental solutions to address complex remediation challenges. In his time with REGENESIS, Dr. Erickson led the development of a number remediation products and technologies, including PetroFix and FluxTracer. Dr. Erickson earned a BS degree in Chemistry from Florida State University, a Masters in Chemistry from the University of Minnesota, and a PhD in Environmental Chemistry from ETH Zurich. He is an author on over 20 peer-reviewed scientific publications mainly in the area of environmental chemistry.

Craig Sandefur
Vice President of Remedial Applications Development, REGENESIS
Mr. Sandefur is the Vice President of Remedial Applications Development at REGENESIS and a recognized expert in the areas of in-situ remedial design and applications. He has over 20 years of experience in the area of in-situ soil and groundwater remediation. In his current role at REGENESIS, Mr. Sandefur is part of team of geologists located throughout the United States that provide remediation designs and optimize performance for REGENESIS clients. Under his direction, the Technical Services team at REGENESIS developed a Design Verification Testing (DVT) program. This program consists of a suite of field sampling and testing activities carried out prior to subsurface remedial reagent emplacement. In addition to the field sampling and testing, Mr. Sandefur directed and implemented a series of Passive Flux Meter (PFM) Studies on select sites. As part of this work he and the REGENESIS design team used high resolution PFM results to identify and further interrogate mass flux zones that are responsible for contaminant Plume Distribution in the subsurface. Design Verification efforts implemented over the past 5 years have resulted in significant improvements in the identification and interrogation of contaminant distribution in heterogenous aquifers. This work has directly informed REGENESIS design and application teams, resulting in significant improvements in remedial reagent emplacement, project remedial outcomes and project cost reductions. In addition to improved remedial outcomes the DVT program at REGENESIS has pioneered the use of PFM’s in conjunction with contaminant plume aspect ratio analysis. This effort has led to more accurate identification and prediction of mass flux zone groundwater velocity earlier in the remedial life cycle. This has resulted in gaining a higher level of accuracy in preliminary reagent selection and designs.