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SERDP & ESTCP Corner: Headlines from the Environmental Restoration Program Area Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2024-04-20 Sarah Mass
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Advances in Remediation Solutions: New Developments and Opportunities in 1,4‐Dioxane Biological Treatment Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2024-04-18 Craig Divine, Caitlin H. Bell, Monica B. Heintz, Andrew Lorenz, Paul Vallin, David Favero, Kathleen Gerber, Chenwei Zheng, Bruce Rittmann
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Multimethod Analysis of NSZD and Enhanced SZD by Solar‐Powered Bioventing at the Guadalupe Restoration Project Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2024-04-15 Benjamin McAlexander, Eric J. Daniels, Natasha Sihota, Justin Eichert, Chris Smith
Active remediation at sites with light non‐aqueous phase liquid (LNAPL) often leaves residual hydrocarbons in the subsurface, necessitating long‐term management. While much of the effort in recent years has focused on natural source zone depletion (NSZD) as the primary method for demonstrating continued hydrocarbon removal, the same data collection methods can quantify biodegradation enhancements that
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Assimilative Capacity Is an Under‐Utilized Concept for Regulating Soil and Groundwater Contamination with Important Implications for Site Closure Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2024-04-15 J.F. Devlin, Beth L. Parker, Andrea J.H. Rhoades, Robert J. Stuetzle, Shaily Mahendra, Joseph Scalia, Jens Blotevogel
The beginning of modern in situ subsurface cleanup arguably began in the early 1970s with the application of hydrogen peroxide to shallow aquifers to drive gasoline spill remediation, in what became known as the Raymond method (Committee on In Situ Bioremediation 1993). Since then, this idea has sparked remarkable remediation innovations where processes that occur naturally in the subsurface, including
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Consideration of Vadose Zone Moisture Dynamics in Remediation of PFAS‐Impacted Soils Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2024-04-13 Kayvan Karimi Askarani, John S. Cook, John A. Connor, Charles J. Newell
Oilfield brines are soluble, non‐volatile, and recalcitrant contaminants that are vulnerable to capillary effects and evapoconcentration and have been known to recontaminate clean fill soils emplaced after excavations. This problem may also occur for some poly‐ and perfluoroalkyl substances (PFAS) at PFAS sites. In this paper, we consider the soil moisture characteristic curve, wetting front dynamics
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In My Experience: Observations on the Pace of Technology Advancement in the Remediation Industry Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2024-04-10 Craig Divine
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High‐Resolution Direct Push NMR Tools for Groundwater Investigations Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2024-04-08 Darya Morozov, David Walsh, Cristina McLaughlin, Anh Nguyen, Elliot Grunewald, Warren Caldwell, Daniel Pipp, Nicholas Basore, Thomas Christy, Jorge Macedo
A small‐diameter nuclear magnetic resonance (NMR) technology optimized for use with direct push (DP) and cone penetrometer test (CPT) drilling has been developed. The DP NMR tool can be deployed through 2.25‐in. diameter DP and CPT drilling rods allowing high‐resolution NMR logging measurements to be acquired during retraction of drill rods. DP NMR technology runs from a person‐portable battery‐powered
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Bioremediation of Chlorate and Chromium in Soil Columns Using Contaminated Site Native Culture Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2024-03-29 Mehdi Motevasselin, Beata Gorczyca, Indra Kalinovich, Richard Sparling, Ramanathan Sri Ranjan
Chlorate and hexavalent chromium (chromate) are both widely used in different industries, and the improper waste management in the past left many sites with elevated concentrations in groundwater that pose potential risk to human and/or ecological health. Bioremediation is a sustainable management solution that can reduce both of these contaminants to less toxic species. In our earlier microcosms experiments
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Impact of Hurricanes, Tropical Storms, and Coastal Extratropical Storms on Indoor Air VOC Concentrations Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2024-03-28 Chris Lutes, Victoria Boyd, Gwen Buckley, Laurent Levy, Kate Bronstein, John H. Zimmerman, Alan Williams, Brian Schumacher
Understanding vapor intrusion (VI) temporal variability is key for the design of sampling strategies intended to assess reasonable maximum exposure of indoor air concentrations of volatile organic compounds (VOCs) as well as risk evaluation and mitigation planning. VI temporal variability has previously been shown to be dependent on the complex interactions of multiple independent variables—meteorological
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UAV Thermal Mapping as a New Tool to Detect Subsurface Moisture and Document Baseline Environmental Conditions Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2024-03-20 William R. Laton, Rene A. Perez, John H. Foster
The California High‐Speed Rail is currently planning a rail corridor through the San Gabriel Mountains. The alignment will require tunnels up to approximately 600 m deep and crossing through the San Gabriel Mountains in the SR 14 area. This study utilized repeated optical and infrared unmanned aerial vehicle (UAV) aerial imagery to document the baseline environmental conditions overlying one of the
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Groundwater Federal Regulatory Summary for 2023 Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2024-03-05 Charles Job
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Groundwater Federal Regulatory Summary for 2023 Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2024-03-04 Charles Job
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Overview of State Approaches to Vapor Intrusion: 2023 Update Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2024-02-07 Bart Eklund, Catherine Regan, Rich Rago, Lila Beckley
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Evaluation of Passive Vapor Diffusion Samplers to Quantify Acetylene, Ethene, and Ethane in Groundwater Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2024-02-06 Hao Wang, Rong Yu, David T. Adamson, Ramona Iery, David L. Freedman
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Assessment of Cryogenic Coring to Preserve Vertical Distributions of Trichloroethylene and Reaction Products in an Aquitard Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2024-01-22 Kade J. Kearney, Timothy Blount, Emma Palmer, Rosemary Arvizu, Robert Sanford, Albert Valocchi, Charles Schaefer, Charles J. Werth
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Corrigendum to “Financing Managed Aquifer Recharge Projects” Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2024-01-12
Job, C. 2023. Financing managed aquifer recharge projects. Groundwater Monitoring & Remediation 43: 11–17. https://doi.org/10.1111/gwmr.12620 On page 16, the U.S. Army Corps of Engineers should have appeared as a separate listing and not part of the U.S. Bureau of Reclamation listing. The listing should appear as follows: U.S. Army Corps of Engineers—Water Resources Development Act of 2022, Section 8108
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Partitioning of Per- and Polyfluoroalkyl Substances to Weathered Light Non-Aqueous Phase Liquid Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2023-11-29 Yida Fang, Stephanie Fiorenza, Charles Schaefer, Kevin Molloy, Chris Gurr
Per- and polyfluoroalkyl substances (PFAS) and weathered petroleum hydrocarbons can be co-contaminants at sites where aqueous film-forming foam (AFFF) was used to extinguish high-temperature petroleum fires. Here, we report on the partitioning of six PFAS between water and a weathered diesel and gasoline range hydrocarbon light non-aqueous phase liquid (LNAPL) collected from the subsurface of a decommissioned
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State of the Practice Worldwide: Utilizing Hydrogeochemical Data and GIS Tools to Assess the Groundwater Quality in Arid Region: Example from Wadi Feiran Basin, Southwestern Sinai, Egypt Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2023-11-24 Ali E. Omar, Khaled A. Abdel-Halim, Mohamed O. Arnous
The paper aims to study the physio-chemical parameters of Wadi Feiran groundwater and classify it for use for drinking and irrigation. Twenty water samples collected from the WF have revealed a number of physio-chemical parameters such as pH, TDS, SAR, EC, ions (Na+, Mg+2, Ca+2, K+, Cl−, SO4−2, NO3−, and HCO3−), and trace elements (U, Pb, Cd, Zr, and Fe). The study clarified that the major ion parameters
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Past, Present, and Future Anatomy of an Oil Brine Plume Remediation near Poplar, Montana: A Case Study Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2023-11-24 Andy Davis, Ben Kamark, Nathan Sims, Martin Roth, John Mocko
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Simulating the Spatial Extent of Thermally Enhanced Reaction Zones for Low Temperature Thermal Treatment Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2023-10-09 Qianli Xie, Kevin G. Mumford, Bernard H. Kueper
Low temperature thermal treatment (LTTT) is a technology that can enhance aqueous-phase degradation reactions for organic constituents in groundwater. Understanding heat transfer in groundwater is important for the design of LTTT applications. In this study, the effect of permeability heterogeneity on temperature distributions during and after the application of heat was investigated by numerical modeling
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Bioremediation of Chlorate and Chromium Contamination with Native Microbial Culture in Cold Climate Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2023-08-24 Mehdi Motevasselin, Beata Gorczyca, Indra Kalinovich, Richard Sparling
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A Monte-Carlo Chemical Budget Approach to Assess Ambient Groundwater Flow in Bedrock Open Boreholes Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2023-08-22 Philip T. Harte
In low-permeability rocks, ambient groundwater flow in open boreholes may go undetected using conventional borehole-flowmeter tools and alternative approaches may be needed to identify flow. Understanding ambient flow in open boreholes is important for tracking of cross contamination in groundwater. Chlorinated volatile organic compound (CVOC) concentrations from three open boreholes set in a crystalline-rock
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Leveraging Sequence Stratigraphy to Accelerate Site Remediation: Pliocene Citronelle Formation, Eglin Air Force Base, Florida, USA Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2023-07-24 Mike Shultz, Colin Plank, Mark Stapleton, Leo Giannetta, Rick Cramer
At Eglin Air Force Base (AFB) in the Florida Panhandle, a groundwater extraction and treatment system was installed to contain and remediate a chlorinated solvent plume. After 2 years of operation, the system was not removing the contaminant mass at the rate predicted or required to meet performance-based contract terms. As a result, a sequence-stratigraphic analysis was initiated to develop a strategy
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Evaluation of Strategies to Remediate Mixed Wastes at an Industrial Site in Brazil Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2023-07-22 Paola Barreto, Maria Lemes, Jimena Jimenez, E. Erin Mack, James Henderson, David L. Freedman
Complex mixtures of contaminants at hazardous waste sites often pose significant challenges for remediation. For example, within the largest industrial area in northeastern Brazil, one of the sites is contaminated with at least 26 chemicals, six of which are present in the part per million range: chlorobenzene (CB), 1,2-dichlorobenzene (1,2-DCB), 4-nitrotoluene (4-NT), 2,6-dinitrotoluene (2,6-DNT)
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Forecasting Groundwater Remediation Timeframes: Site-Specific Temporal Monitoring Results May Not Predict Future Performance Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2023-07-21 Thomas E. McHugh, Charles J. Newell, Lila M. Beckley, David T. Adamson, George E. DeVaull, Matthew A. Lahvis
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Complex Sites Highlight How Far We Have Come—And How Much Remains to be Done Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2023-07-18 J.F. Devlin, Gaisheng Liu, Murray Einarson
Confucius is credited with saying that life is really simple but we insist on making it complicated. Flip this upside down and we have a quote that might apply to contaminated sites: “Sites are complicated but we insist on making them simple.” A simple site is one that has not been studied. That being said, some sites present more challenges than others, and these are the ones researchers and practitioners
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A Complex Brownfields Case Study—The Former Bannister Federal Complex, Kansas City, Missouri Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2023-07-16 Harvey A. Cohen, Kevin P. Breslin, Michael T. Rafferty
In November 2017, 225 acres (91 ha) of the former Bannister Federal Complex (BFC) in Kansas City, Missouri were transferred from the Federal Government to Bannister Transformation & Development, LLC (BTD), for demolition; environmental corrective measures; and preparation of the site for redevelopment. This presented a once-in-a-lifetime opportunity to reconfigure groundwater remedies and address long-standing
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In My Experience: The Lessons from Dispersion—Don't Believe Everything You Read Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2023-07-12 John Cherry
This note is about my experience investigating and thinking about hydrodynamic dispersion, simply known as dispersion. In keeping with the tried and true practice of academic reductionism, I will constrain the discussion to the relatively simple and idealized case of point-source groundwater plumes in granular deposits with the aim of illustrating some persistent myths and insights about this process
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Strategies for Bioremediation of Soil from an Industrial Site Exposed to Chlorinated and Nitroaromatic Compounds Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2023-07-03 Natanna Melo, Sofia Pimentel Araújo, Suzana de Paula Queiroz Kraus, Line Lomheim, Paola Barreto Quintero, Elizabeth Erin Mack, Elizabeth A. Edwards, Jim Spain, Savia Gavazza
As technological advances allow the development of new products, the number of synthetic chemical compounds released into the soil, surface water and groundwater increases, posing a threat to the environment. Therefore, treatability studies to improve bioremediation strategies (biostimulation and bioaugmentation) were applied to samples of soil containing nitro and chlorinated aromatic compounds from
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Remediating a PCE Source Area in Clay Using Electrokinetically Enhanced In Situ Bioremediation Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2023-07-03 Charlotte Riis, Evan E. Cox, James Wang, David Gent, Martin Brandi Bymose, Dorte Moon Pade
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Min-Trap® Samplers to Passively Monitor In-Situ Iron Sulfide Mineral Formation for Chlorinated Solvent Treatment Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2023-06-27 Craig Divine, Shandra Justicia-León, Jennifer Martin Tilton, David Liles, Erika Carter, Erik Zardouzian, Katherine Clark, Dora Taggart, David Freedman, Scott LaRaia, Francesca Perrell, Kathleen Gerber
The objective of this work was to field-demonstrate the Min-Trap® sampler technology, a new in-situ passive monitoring tool that offers distinct advantages for collecting mineralogical data. The Min-Trap consists of a solid porous medium (e.g., silica sand) contained within a water-permeable mesh and support housing that is deployed inside a monitoring well. The porous medium serves as a solid substrate
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Modeling of Complex, Multi-Component NAPL Remediation for Decision Support Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2023-06-22 Lloyd D. Stewart, Jennifer Nyman, Andres E. Prieto-Estrada, Julie C. Chambon, Mark A. Widdowson, Michael C. Kavanaugh
In situ remediation of nonaqueous phase liquid (NAPL)-impacted sites is difficult and costly. Even with enhancements (e.g., chemical and thermal) and partial NAPL recovery, mass transfer constraints associated with partitioning from residual NAPL typically control the depletion rate of sources and attainment of cleanup goals. Practical methodologies are needed to support strategic evaluation, planning
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High-Resolution Geological Information from Crosshole Ground Penetrating Radar in Clayey Tills Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2023-06-19 Bolette B. Jensen, Louise Rosenberg, Aikaterini Tsitonaki, Nina Tuxen, Poul L. Bjerg, Lars Nielsen, Thomas M. Hansen, Majken C. Looms
Heterogeneous glacial deposits dominate large parts of the Northern Hemisphere. In these landscapes, high-resolution characterization of the geology is crucial for understanding contaminant transport. Geological information is mostly obtained from multiple boreholes drilled during a site investigation, but such point-based data alone do not always provide the required resolution to map small-scale
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Integrated Three-Dimensional Geological and Numerical Groundwater Model Development Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2023-06-16 Michael LeFrancois, Morgan Farmer, Marc Carver
Conceptual site model (CSM) development is a foundational step for numerical groundwater model construction. Tools for reviewing and combining disparate data to develop a CSM have been furthered through software that efficiently integrates multiple data streams, especially when a large amount of information is available at complex sites. Three-dimensional (3D) interfaces for data visualization and
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Fluorescent Dyes as Partitioning Tracers for the Estimation of NAPL-Mass Saturation in Porous Media Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2023-06-07 Sofia Visitacion-Carrillo, Stéfan Colombano, Nicolas Fatin-Rouge, Dorian Davarzani
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State of the Practice Worldwide: Complex Installation for In Situ Thermal Remediation Beneath an Active Manufacturing Facility Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2023-06-07 Gorm Heron, Chris Thomas, Chad Crownover, Robert Glass, Gregory Crisp, Bruce S. Kennington, Scott Tarmann, Luis Hidalgo
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Optical In Situ Monitoring of Acid Mine Drainage Remediation: Laboratory and Model Investigation Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2023-06-07 Maximilian Reuß, Sascha E. Oswald, Matthias Munz, Michael U. Kumke
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Thermal Conduction Heating for a 125 ft Deep TCE Source—Multiple Lines of Evidence for Verification of Remedial Goals Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2023-05-13 Chad Crownover, Chris Thomas, Mark Boulos, Robert Glass, Gregory Crisp, Gorm Heron, Bruce S. Kennington, Scott Tarmann, Luis Hidalgo
This paper describes thermal conduction heating of a trichloroethylene (TCE) source zone within vadose zone soils consisting of glacial till at depths of 50 to 125 ft below an active manufacturing facility. The performance objectives and metrics used to determine remediation success are presented. Access limitations inside the facility prevented traditional spatial soil confirmation sampling, which
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Field Evaluation of the Sentinel™ Integrative Passive Sampler for the Measurement of Perfluoroalkyl and Polyfluoroalkyl Substances in Water Using a Modified Organosilica Adsorbent Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2023-04-01 Paul L. Edmiston, Erika Carter, Kevin Toth, Riley Hershberger, Noah Hill, Patrick Versluis, Patrick Hollinden, Craig Divine
A passive sampler specifically designed to measure perfluoroalkyl and polyfluoroalkyl substances (PFAS) in water was tested in four study areas (Ellsworth and Peterson Air Force bases, CO and SD; the Ohio River, OH, WV, KY, IN; and the Santa Ana River, CA). Locations included both groundwater and surface water locations. Over the 2-year study, 96 passive samplers were deployed at 33 sample locations
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Desorption and Co-Dissolution of Uranium-Bearing Solids During Alkalinity-Enhanced Flushing of Contaminated Sediments Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2023-03-29 Martin Dangelmayr, Cullen Meurer, Aaron Tigar, Raymond H. Johnson, Charles Paradis
Elevated uranium concentrations in groundwater remain a persistent challenge at contaminated sites. Several sites rely on natural flushing of uranium as a remediation strategy. Uncertainties in conceptual models can cause remediation strategies to underestimate timeframes required to reach remediation goals. In this study, laboratory experiments were conducted to investigate uranium flushing of sediments
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Demonstration of a Principal Component Analysis Trajectory Method to Assess Bioremediation Progress at a TCE-Impacted Site Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2023-03-24 Matan Freedman, Kevin G. Mumford, Anthony Danko, Dylan Hart, Stephen D. Richardson
In-situ bioremediation (ISB) is a popular remediation technology for the treatment of a range of compounds, including chlorinated solvents such as tetrachloroethene and trichloroethene (TCE). Large amounts of data are collected before, during, and after ISB applications to determine amendment approaches, monitor progress and evaluate success. The interpretation of these large datasets can be limited
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Stakeholder Participation in High-Resolution Monitoring of Salt Contamination Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2023-03-13 Meredith J. Metcalf, Mark A. Higgins, Gary A. Robbins
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Vadose Zone Soil Flushing for Chromium Remediation: A Laboratory Investigation to Support Field-scale Application Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2023-02-20 James E. Szecsody, Hilary P. Emerson, Amanda R. Lawter, Charles T. Resch, Mark L. Rockhold, Rob D. Mackley, Nikolla P. Qafoku
Cr(VI) flushing from the vadose zone to the groundwater (with subsequent Cr(VI) removal in groundwater by pump-and-treat system) is a promising remedial technique that has recently been used at field scale. This laboratory study was conducted to provide the technical basis to design a field soil flushing strategy. The objectives were to (1) quantify the relationship between sediment Cr(VI) and Cr(III)
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One Ranney Well Can Make a Difference: The Impacts of a Radial Collector Well on Groundwater Level and Quality in the Cedar River Alluvial Aquifer Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2023-01-02 Adel E. Haj, Lance R. Gruhn, Stephen J. Kalkhoff
The City of Cedar Rapids, Iowa, depends on groundwater from the Cedar River alluvial aquifer for residential and industrial use. In 2020, the city completed an additional radial collector well, or Ranney well, and was concerned that pumping from the well at high rates may lower water level elevations in the aquifer, reduce yields from nearby production wells, and change the quality of produced water
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Optimization and Mechanism of Cadmium Removal Using Biochar Obtained from Wetland Emergent Plant Zizania caduciflora Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2023-01-02 Xiaoshu Wang, Yan Wang, Yimin Luo, Yangyang Wang, Nan Xu, Jia Zhu, Yinyin Li, Longquan Wang, Jinsheng Wang, Xuquan Huang, Lei Wang
Wetland emergent plants are considered a good source of biochar materials, which have proven to be an effective alternative to activated carbon for water treatment and soil amendment purposes. In this work, physicochemical properties of biochar made from the root, stem, and leaf of Zizania caduciflora (ZCR, ZCS, and ZCL) under the same pyrolysis condition were compared to evaluate their ability on
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Empirically Derived California Vapor Intrusion Attenuation Factors Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2022-12-26 Rafat Abbasi, William Bosan, Dan Gallagher
The California Department of Toxic Substances Control (DTSC) gathered empirical data from sites contaminated with chlorinated volatile organic compounds and generated a vapor intrusion database. The database includes 52 sites across California with 213 buildings, of which, 53% are residential, and 47% are commercial/industrial (nonresidential). DTSC's objective is to improve its knowledge and understanding
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Risk Assessment of Radon Exposure by Ingestion and Inhalation of Groundwater Within Different Age Groups Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2022-12-16 Al Mamun, Amira Salman Alazmi
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Emissions of Trichloroethylene from Bedroom Furniture Set as a Source of Indoor Air Contamination Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2022-10-17 Q.G. Bingham, C. Lutes, R. Grand, S. Quadri, R. Dollhopf, N. Posavatz, E. Birkett
Shallow trichloroethene (TCE) groundwater and soil contamination associated with a Comprehensive Environmental Response, Compensation and Liability Act (CERCLA) Superfund Site in Michigan resulted in a vapor intrusion (VI) investigation of overlying condominium units. Units with data suggesting a complete VI pathway received subslab depressurization systems (SSDs). Performance monitoring following
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Data Management: An Arcane Old Friend Becoming “the Fourth Paradigm” of Science Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2022-08-03 J. Blotevogel, C. Newell, J. Meyer, K. Karimi Askarani, J.F. Devlin
The problem of managing data was largely recognized with the advent of digital computing in the 1950s. In the early days, data management was little more than the physical storage of tapes and punch cards. Not long afterwards the organization of the data became the focus of data management, and databases were born. The concept of “data management” is credited to the Association of Data Processing Service
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Sulfate Land Application Enhances Biodegradation in a Petroleum Hydrocarbon Smear Zone Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2022-07-31 Kanwartej S. Sra, Violaine Ponsin, Ravi Kolhatkar, Daniel Hunkeler, Neil R. Thomson, Eugene L. Madsen, Timothy Buscheck
Delivery of sulfate to petroleum hydrocarbons (PHCs) source zones and groundwater plumes is desirable to enhance biodegradation rates when treatment has become limited due to depletion of sulfate. Sulfate land application involves spreading sulfate salts on ground surface and allowing their dissolution and infiltration of sulfate into subsurface. The objectives of this pilot-scale investigation were
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Comparison of Radiocarbon- and Background Location-Corrections on Soil-Gas CO2 Flux-Based NSZD Rate Measurements at Petroleum Impacted Sites Groundw. Monit. Remediat. (IF 1.9) Pub Date : 2022-07-05 Julio A. Zimbron
The measurement of contaminant natural source zone depletion (NSZD) rates has become an important tool to manage petroleum contaminated sites. Most NSZD rate measurement methods rely on a balance on the biodegradation by-products (either carbon or heat). Carbon balance-based methods stoichiometrically convert measured soil-gas CO2 flux related to contaminant degradation to equivalent contaminant mass