Advances in Remediation: Recharge Redux

Congratulations to Charles J. Newell, PhD, PE, BCEE, and Kenneth L. "Neth" Walker, Jr., PE, PG, co-authors of the recently published paper...

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Congratulations to Charles J. Newell, PhD, PE, BCEE, and Kenneth L. “Neth” Walker, Jr., PE, PG, co-authors of the recently published paper “Advances in Remediation: Recharge Redux” in Groundwater Monitoring & Remediation!

Alongside co-authors Craig Divine, Matthew Spurlin, Timothy Blount, Prashanth Khambhammettu, and Marc Killingstad, they explore the critical role groundwater recharge plays in contaminant fate and transport, with particular attention to PFAS.

The article highlights why recharge deserves closer attention in conceptual site models (CSMs) and discusses practical data and tools to help environmental professionals better understand contaminant movement and make informed site assessment and remediation decisions.

Grab a cup of coffee and dig into the research!

Read the publication: https://doi.org/10.1111/gwmr.70090

PFAS Screening in Soil by Combustion Gas Analysis with Fourier Transform Infrared Spectroscopy

Chase W. Holton, PhD, PE co-authored  a new article published this week in Analytical Chemistry titled, “PFAS Screening in Soil by Combustion Gas Analysis...

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Chase W. Holton, PhD, PE co-authored  a new article published this week in Analytical Chemistry titled, “PFAS Screening in Soil by Combustion Gas Analysis with Fourier Transform Infrared Spectroscopy.”

Co-authors include Junli Wang, Jordyn Dashiell, Diego Castellano, Mingrui Song, Haley Grable, Lauren Edwards, Plabon Islam Turzo, and David Hanigan.

The article explores a combustion-gas analytical approach for PFAS screening in soil, offering a field-deployable method that can support rapid site characterization. By using FTIR to selectively quantify SiF4, the method helps address a key challenge in total PFAS analysis: distinguishing PFAS from inorganic fluorine interference.

This work reflects the kind of applied research that helps move environmental investigation tools forward, especially for contaminated sites where faster screening can support better decision-making.

Congratulations, Chase, on this publication!

Read the article here: https://pubs.acs.org/doi/10.1021/acs.analchem.5c07128

Using the Transition Assessment Teaching Assistant to Evaluate a Transition from Pump and Treat to MNA

We are pleased to share that Hiroko Hort, David Adamson, and Charles Newell recently co-authored “Using the Transition Assessment Teaching Assistant to...

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We are pleased to share that Hiroko Hort, David Adamson, and Charles Newell recently co-authored “Using the Transition Assessment Teaching Assistant to Evaluate a Transition from Pump and Treat to MNA.”

Co-authored with John T. Wilson, Barbara Wilson, Mark Ferrey, David L. Freedman, Anangelica Rivera Cruz, and Olivia Groshans, the article explores how the Transition Assessment Teaching Assistant can be used to evaluate whether a site may be ready to transition from pump and treat to monitored natural attenuation.

This paper demonstrates how practical, decision-focused analysis can help clients better understand remedial performance, plan for long-term site management, and determine next steps with greater confidence.

Read the full open-access article here: https://ngwa.onlinelibrary.wiley.com/doi/10.1111/gwmr.70046

Biotransformation Processes Relevant to Geologic Carbon Sequestration: Potential Implications for Environmental Fate

A new publication examines how microbial processes may influence the fate of CO2 in geologic carbon sequestration settings. The article, Biotransformation Processes...

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A new publication examines how microbial processes may influence the fate of CO2 in geologic carbon sequestration settings.

The article, Biotransformation Processes Relevant to Geologic Carbon Sequestration: Potential Implications for Environmental Fate, is published in Environmental Science & Technology and is authored by GSI experts Lisa J. Molofsky, Thomas E. McHugh, Danny Kingham, and Charles J. Newell, with contributions from Sven Lahme, Kelly M. McFarlin, Paul G. Koster van Groos, Frank E. Löffler, Louise Camenzuli, Leanne Walker, Sophie L. Nixon, and Trent A. Key.

The paper reviews how CO2-driven geochemical changes can alter microbial communities and trigger biotransformation processes that move carbon into mineral, gas, or organic phases. It also explores implications for both deep storage formations and nontarget environments such as shallow groundwater, the vadose zone, and marine systems, while identifying key knowledge gaps that affect long-term prediction of CO2 behavior.

Read the full open-access article here:
https://pubs.acs.org/doi/10.1021/acs.est.5c02389

Facilitated Transport of Organic Contaminants in a High Concentration, Multicomponent Plume

Congratulations to Dr. Gino Bianchi Mosquera, PG, BCES, on the publication of "Facilitated Transport of Organic Contaminants in a High Concentration, Multicomponent Plume," in...

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Congratulations to Dr. Gino Bianchi Mosquera, PG, BCES, on the publication of “Facilitated Transport of Organic Contaminants in a High Concentration, Multicomponent Plume,” in Groundwater Monitoring & Remediation.

This open access article, co-authored with D. M. Mackay, B. Myller, B. D. Honeyman, M. Schirmer, R. M. Allen-King, W. P. Ball and R. L. Stollar, presents findings from a field experiment at the Rocky Mountain Arsenal evaluating organic contaminant transport within a complex plume. The study provides new insight into why contaminants may migrate with little to no sorptive retardation in situ and identifies the need for additional laboratory research to better understand the plume components that influence sorption and mobility.

Read the full open access article here: https://ngwa.onlinelibrary.wiley.com/doi/10.1111/gwmr.70028

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