Publications

2026

Molofsky LJ, McHugh TE, Lahme S, McFarlin KM, Koster van Groos PG, Löffler FE, Kingham DM, Newell CJ, Camenzuli L, Walker L, Nixon SL, Key TA. Biotransformation Processes Relevant to Geologic Carbon Sequestration: Potential Implications for Environmental Fate, Environ Sci Technol (preprint).

Kulkarni, P. R., Javed, H., Johnson, N.W., Connor, J.A., Alanis, J., Vines, W., Rifai, H., Newell, C.J. Surfactant optimization for PFAS removal in site groundwater using colloidal gas aphrons (CGAs),AWWA Water Science.

2025

CJ Newell, JD Gamlin, GJ Garvey, HS Rifai, GO Grundy, M Gupta, M Wang, NW Johnson, H Javed, MQ Lentz. Exploration of PFAS Mass Discharge in Stormwater Versus Groundwater: Technical and Regulatory Considerations, Remediation Journal, 36(1), e70052.

Wilson, J., Wilson, B., Ferrey, M., Freedman, D. L., Cruz, A. R., Groshans, O., Adamson, D., & Newell, C. Using a 14C‐Assay to Assess Natural Abiotic Degradation of Chlorinated Ethenes in Aquifer Sediments,Groundwater Monitoring & Remediation.

HS Rifai, CJ Newell. Monitored Natural Attenuation (MNA): Past, Present, and Future, Groundwater Monitoring & Remediation 45 (4), 14-16.

Kulkarni, P. R., Andrzejczyk, N. E., Gavaskar, A., Cartwright, A., Adamson, D. T., Cook, J., & Newell, C. J. Characteristics of Aqueous Film Forming Foam (AFFF) Sites Impacted with Per-and Polyfluoroalkyl Substances (PFAS): A 37-Site Study, Water Research, 124124.

Robinson, S. T., Kulkarni, P. R., Stockwell, E. B., Schmeltzer, K., White, J., Scalia, J., & Newell, C. J. Optimizing PFAS Plume Remediation: Gas Sparging and Partially Penetrating Pump‐and‐Treat Systems, Remediation Journal 35 (4), e70031.

CJ Newell, JS Cook, DT Adamson, PB Hatzinger. A Long Way to Go: Challenges and Strategies for Managing PFAS in Groundwater, Remediation Journal 35 (4), e70028.

DT Adamson, CJ Newell, P Kulkarni, H Stroo. PFAS Monitored Retention: A Framework for Managing PFAS‐Contaminated Groundwater Sites, Groundwater Monitoring & Remediation 45 (3), 37-49.

Newell, C. J., Smith, W. B., Kearney, K., Clay, S., Javed, H., Carey, G. R., Richardson, S. D., & Werth. Tool and Database for Estimating Potential Longevity of Colloidal Activated Carbon Barriers for PFAS in Groundwater, Remediation Journal 35 (3), e70017.

A Lal, R Naidu, CJ Newell. From Contamination to Clarity: Evaluating the Role of Groundwater Modeling in Managing and Remediating PFAS Plumes,Book Chapter Per-and Polyfluorinated Alkyl Substances: Occurrence, Toxicity and …

DT Adamson, H Hort, JT Wilson, CJ Newell, TE McHugh. State of the Practice Worldwide: Developing Approaches to Transition from Active Remediation to Monitored Natural Attenuation, Groundwater Monitoring & Remediation 45 (2), 65-80.

EB Stockwell, D Adamson, JD Gamlin, PR Kulkarni, A Singh, RW Falta. Modelling Per-and Polyfluoroalkyl Substance Precursor Transformation in Groundwater at a Well-Characterized Site, Journal of Contaminant Hydrology, 276, 104766.

2024   

CJ Newell, P de Blanc, K Whitehead, B Sackmann, M Hjort, E Vaiopoulou. A New Toolbox for Managing Sites Affected by Light Non-aqueous Phase Liquids (LNAPLs), Quarterly Journal of Engineering Geology and Hydrogeology 57 (4), qjegh2024-079.

HM Hort, CE Robinson, AH Sawyer, Y Li, R Cardoso, SA Lee, D Roff, ... Conceptualizing Controlling Factors for PFAS Salting Out in Groundwater Discharge Zones Along Sandy Beaches, Groundwater 62 (6), 860-875.

JD Gamlin, H Javed, CJ Newell, E Stockwell, R Caird, J Scalia, D Navarro, ... Bridging the Technology Gap for Cost‐Effective and Sustainable Treatment of Per‐and Polyfluoroalkyl Substances in Surface Water and Stormwater,Remediation Journal 35 (1), e21790.

J Gamlin, CJ Newell, C Holton, PR Kulkarni, J Skaggs, DT Adamson, ... Data Evaluation Framework for Refining PFAS Conceptual Site Models, Groundwater Monitoring & Remediation 44 (4), 53-66.

HM Hort, EB Stockwell, CJ Newell, J Scalia IV, S Panday. Modeling and Evaluation of PFOS Retention in the Unsaturated Zone Above the Water Table,Groundwater Monitoring & Remediation 44 (3), 38-48.

K Karimi Askarani, JS Cook, JA Connor, CJ Newell. Consideration of Vadose Zone Moisture Dynamics in Remediation of PFAS‐Impacted Soils, Groundwater Monitoring & Remediation 44 (3), 122-127.

WH DiGuiseppi, CJ Newell, G Carey, PR Kulkarni, Z Xia, J Stults. Available and Emerging Liquid Treatment Technologies for PFASs, Remediation Journal 34 (3), e21782.

S Ganna, PR Kulkarni, S Garg, CJ Newell. Spatial-temporal Trends and Correlations from a Large Natural Source Zone Depletion (NSZD) Research Project at a Site with LNAPL, Bioremediation Journal 28 (1), 110-120.

2023

TE McHugh, CJ Newell, LM Beckley, DT Adamson, GE DeVaull, ... Forecasting Groundwater Remediation Timeframes: Site‐Specific Temporal Monitoring Results May Not Predict Future Performance, Groundwater Monitoring & Remediation 43 (4), 92-103.

CJ Newell, EB Stockwell, J Alanis, DT Adamson, KL Walker, ... Determining Groundwater Recharge for Quantifying PFAS Mass Discharge from Unsaturated Source Zones,Vadose Zone Journal 22 (4), e20262.

2022

JWN Smith, GB Davis, GE DeVaull, S Garg, CJ Newell, MO Rivett. Natural Source Zone Depletion (NSZD): From Process Understanding to Effective Implementation at LNAPL-impacted Sites, Quarterly Journal of Engineering Geology and Hydrogeology 55 (4), qjegh2021-166.

PR Kulkarni, KL Walker, CJ Newell, KK Askarani, Y Li, TE McHugh. Natural Source Zone Depletion (NSZD) Insights from Over Years of Research and Measurements: A Multi-Site Study,Water research 225, 119170.

CJ Newell, H Javed, Y Li, NW Johnson, SD Richardson, JA Connor, ... Enhanced Attenuation (EA) to Manage PFAS Plumes in Groundwater, Remediation Journal 32 (4), 239-257.

DT Adamson, JT Wilson, CJ Newell, BA Strasert, PC de Blanc, ... Development of a Quantitative Framework for Evaluating Natural Attenuation of 1, 1, 1‐TCA, 1, 1‐DCA, 1, 1‐DCE, and 1, 4‐Dioxane in Groundwater,Groundwater Monitoring & Remediation 42 (4), 78-84.

J Blotevogel, C Newell, J Meyer, K Karimi Askarani, JF Devlin. Data Management: An Arcane Old Friend Becoming “the Fourth Paradigm” of Science, Groundwater Monitoring & Remediation 42 (3), 13-13.

PR Kulkarni, D Aranzales, H Javed, TM Holsen, NW Johnson, ... Process to Separate Per‐and Polyfluoroalkyl Substances from Water Using Colloidal Gas Aphrons, Remediation Journal 32 (3), 167-176.

SK Farhat, CJ Newell, SA Lee, BB Looney, RW Falta. Impact of Matrix Diffusion on the Migration of Groundwater Plumes for Perfluoroalkyl Acids (PFAAs) and Other Non-degradable Compounds, Journal of contaminant hydrology 247, 103987.

PR Kulkarni, DT Adamson, J Popovic, CJ Newell. Modeling a Well-characterized Perfluorooctane Sulfonate (PFOS) Source and Plume Using the REMChlor-MD Model to Account for Matrix Diffusion, Journal of Contaminant Hydrology 247, 103986.

DT Adamson, PR Kulkarni, A Nickerson, CP Higgins, J Field. Characterization of Relevant Site-Specific PFAS Fate and Transport Processes at Multiple AFFF Sites,Environmental Advances 7, 100167.

CJ Newell, WH DiGuiseppi, DP Cassidy, CE Divine, JM Fenstermacher, ... PFAS Experts Symposium 2: PFAS Remediation Research–Evolution from Past to Present, Current Efforts, and Potential Futures, Remediation Journal 32 (1-2), 65-73.

2021 

CJ Newell, PR Kulkarni, DT Adamson. In Situ Gas Sparging for Concentration and Removal of Per‐and Polyfluoroalkyl Substances (PFAS) from Groundwater, Remediation Journal 31 (4), 35-47.

CJ Newell, DT Adamson, PR Kulkarni, BN Nzeribe, JA Connor, J Popovic, ... Monitored Natural Attenuation to Manage PFAS Impacts to Groundwater: Potential Guidelines, Remediation Journal 31 (4), 7-17.

CJ Newell, DT Adamson, PR Kulkarni, BN Nzeribe, JA Connor, J Popovic, ... Monitored Natural Attenuation to Manage PFAS Impacts to Groundwater: Scientific Basis, Groundwater Monitoring & Remediation 41 (4), 76-89.

2020 

DT Adamson, A Nickerson, PR Kulkarni, CP Higgins, J Popovic, J Field, ... Mass-based, Field-scale Demonstration of PFAS Retention within AFFF-associated Source Areas,Environmental Science & Technology 54 (24), 15768-15777.

T McHugh, C Newell, B Strasert, C Stanley, J Johnson, T Henderson, ... Direct Aerobic NSZD of a Basalt Vadose Zone LNAPL Source in Hawaii, Journal of Contaminant Hydrology 235, 103729.

CJ Newell, DT Adamson, PR Kulkarni, BN Nzeribe, H Stroo. Comparing PFAS to Other Groundwater Contaminants: Implications for Remediation,Remediation Journal 30 (3), 7-26.

PR Kulkarni, CJ Newell, DC King, LJ Molofsky, S Garg. Application of Four Measurement Techniques to Understand Natural Source Zone Depletion Processes at an LNAPL Site,Groundwater Monitoring & Remediation 40 (3), 75-88.

TM McGuire, CJ Newell, X Osorio, KL Walker, AJ Keat. Allocating Remedial Costs at a Superfund Site Using Risk Magnitude, Geographic Information Systems, and Monte Carlo Analysis, Environmental Forensics 21 (2), 223-235.

SK Farhat, DT Adamson, AR Gavaskar, SA Lee, RW Falta, CJ Newell. Vertical Discretization Impact in Numerical Modeling of Matrix Diffusion in Contaminated Groundwater,Groundwater Monitoring & Remediation 40 (2), 52-64.

PR Kulkarni, WR Godwin, JA Long, RC Newell, CJ Newell. How Much Heterogeneity? Flow Versus Area from a Big Data Perspective, Remediation Journal 30 (2), 15-23.

2019 

JA Simon, S Abrams, T Bradburne, D Bryant, M Burns, D Cassidy, ... PFAS Experts Symposium: Statements on Regulatory Policy, Chemistry and Analytics, Toxicology, Transport/fate, and Remediation for Per‐and polyfluoroalkyl Substances (PFAS),          Remediation Journal 29 (4), 31-48.

Y Miao, NW Johnson, PB Gedalanga, D Adamson, C Newell, S Mahendra. Response and Recovery of Microbial Communities Subjected to Oxidative and Biological Treatments of 1, 4-dioxane and Co-contaminants, Water Research 149, 74-85.

2018

Miao, Y., Johnson, N. W., Heck, K., Guo, S., Powell, C. D., Phan, T., Gedalanga, P. B., Adamson, D. T., Newell, C. J., Wong, M. S., & Mahendra, S. Microbial Responses to Combined Oxidation and Catalysis Treatment of 1, 4-dioxane and Co-contaminants in Groundwater and Soil, Frontiers of Environmental Science & Engineering, 12(5), 2.

2017   

PR Kulkarni, DC King, TE McHugh, DT Adamson, CJ Newell. Impact of Temperature on Groundwater Source Attenuation Rates at Hydrocarbon Sites,Groundwater Monitoring & Remediation 37 (3), 82-93.

S Garg, CJ Newell, PR Kulkarni, DC King, DT Adamson, MI Renno, T Sale. Overview of Natural Source Zone Depletion: Processes, Controlling Factors, and Composition Change, Groundwater Monitoring & Remediation 37 (3), 62-81.

2016  

TE McHugh, PR Kulkarni, CJ Newell. Time vs. money: A Quantitative Evaluation of Monitoring Rrequency vs. Monitoring Duration,Groundwater 54 (5), 692-698.

TM McGuire, DT Adamson, MS Burcham, PB Bedient, CJ Newell. Evaluation of Long‐term Performance and Sustained Treatment at Enhanced Anaerobic Bioremediation Sites,Groundwater Monitoring & Remediation 36 (2), 32-44.

TE McHugh, PR Kulkarni, LM Beckley, CJ Newell, M Zumbro. Negative Bias and Increased Variability in VOC Concentrations Using the HydraSleeve in Monitoring Wells,Groundwater Monitoring & Remediation 36 (1), 79-87.

2015   

DT Adamson, RH Anderson, S Mahendra, CJ Newell. Evidence of 1, 4-dioxane Attenuation at Groundwater Sites Contaminated with Chlorinated Solvents and 1, 4-dioxane, Environmental Science & Technology 49 (11), 6510-6518.

DT Adamson, SW Chapman, SK Farhat, BL Parker, PC Deblanc, ... Simple Modeling Tool for Reconstructing Source History Using High Resolution Contaminant Profiles From Low‐k Zones, Remediation Journal 25 (3), 31-51.

DT Adamson, SW Chapman, SK Farhat, BL Parker, P deBlanc, CJ Newell. Characterization and Source History Modeling Using Low‐k Zone Profiles at Two Source areas, Groundwater Monitoring & Remediation 35 (2), 52-69.

2014   

TE McHugh, PR Kulkarni, CJ Newell, JA Connor, S Garg. In Remediation of Groundwater at Petroleum Sites in California, Groundwater 52 (6), 898-907.

DT Adamson, S Chapman, N Mahler, C Newell, B Parker, S Pitkin, ... Membrane Interface Probe Protocol for Contaminants in Low‐permeability Zones, Groundwater 52 (4), 550-565.

DT Adamson, S Mahendra, KL Walker Jr, SR Rauch, S Sengupta, ... A Multisite Survey to Identify the Scale of the 1, 4-dioxane Problem at Contaminated Groundwater Sites, Environmental Science & Technology Letters 1 (5), 254-258.

DT Adamson, TE McHugh, MW Rysz, R Landazuri, MA Seyedabbasi, ... On‐Site Vapor‐Phase Analysis as a Novel Approach for Monitoring Groundwater Wells, Groundwater Monitoring & Remediation 34 (2), 42-59.

PW Hadley, C Newell. The New Potential for Understanding Groundwater Contaminant Transport, Groundwater 52 (2), 174-186.

CJ Newell, BH Kueper, JT Wilson, PC Johnson. Natural Attenuation of Chlorinated Solvent Source Zones, Chlorinated Solvent Source Zone Remediation, 459-508.

2013

D Liu, Z Xiu, F Liu, G Wu, D Adamson, C Newell, P Vikesland, AL Tsai, ... Perfluorooctanoic Acid Degradation in the Presence of Fe (III) Under Natural Sunlight, Journal of hazardous materials 262, 456-463.

JM McDade, PR Kulkarni, MA Seyedabbasi, CJ Newell, D Gandhi, ... Matrix Diffusion Modeling Applied to Long‐term Pump‐and‐treat Data: 1. Method Development,Remediation Journal 23 (2), 71-91.

2012

TE McHugh, CJ Newell, RC Landazuri, LJ Molofsky, DT Adamson. The Influence of Seasonal Vertical Temperature Gradients on No‐purge Sampling of Wells, Remediation Journal 22 (4), 21-36.

PW Hadley, CJ Newell. Groundwater Remediation: The Next 30 Years, Groundwater 50 (5), 669-678.

HF Stroo, A Leeson, JA Marqusee, PC Johnson, CH Ward, ... Chlorinated Ethene Source Remediation: Lessons Learned, Environmental Science & Technology 46 (12), 6438-6447.

MA Seyedabbasi, CJ Newell, DT Adamson, TC Sale. Relative Contribution of DNAPL Dissolution and Matrix Diffusion to the Long-term Persistence of Chlorinated Solvent Source Zones, Journal of contaminant hydrology 134, 69-81.

DT Adamson, TE McHugh, MW Rysz, R Landazuri, CJ Newell. Field Investigation of Vapor‐phase‐based Groundwater Monitoring, Groundwater Monitoring & Remediation 32 (1), 59-72.

C Newell, R Borden, E Alperin. Matrix Diffusion Challenges & Potential Solutions, Pollution Engineering 44 (6).

2011

CJ Newell, SK Farhat, DT Adamson, BB Looney. Contaminant Plume Classification System Based on Mass Discharge, Groundwater 49 (6), 914-919.

TE McHugh, LM Beckley, CY Liu, CJ Newell. Factors Influencing Variability in Groundwater Monitoring Data Sets, Groundwater Monitoring & Remediation 31 (2), 92-101.

DT Adamson, TM McGuire, CJ Newell, H Stroo. Sustained Treatment: Implications for Treatment Timescales Associated with Source‐Depletion Technologies, Remediation Journal 21 (2), 27-50.

HS Rifai, CJ Newell, TH Wiedemeier. Contamination Cleanup: Natural Attenuation and Advanced Remediation Technologies, Handbook of Solvents. William Andrew, Toronto, 1572-1630.

2010

M Rysz, MK Connor, R Kamath, CJ Newell. Origin and Propagation of an Incorrect Chemical Degradation Pathway in the Literature: Cis-1, 2-Dichloroethylene as a Daughter Product of 1, 1, 1-Trichloroethane, Environmental Forensics 11 (1-2), 50-59.

R Kamath, BB Looney, CJ Newell, DT Adamson, KM Vangelas. Closing the Mass Balance at Chlorinated Solvent Sites: Sources and Attenuation Processes, Remediation Journal: The Journal of Environmental Cleanup Costs …

2009 

DT Adamson, TE McHugh, MW Rysz, CJ Newell. Laboratory Validation Study of New Vapor‐phase‐based Approach for Groundwater Monitoring, Remediation Journal: The Journal of Environmental Cleanup Costs …

DT Adamson, CJ Newell. Support of Source Zone Bioremediation through Endogenous Biomass Decay and Electron Donor Recycling, Bioremediation Journal 13 (1), 29-40.

CE Aziz, PC De Blanc, CJ Newell. On the Use and Error of Approximation in the Domenico (1987) Solution, Ground Water 47 (1).

2008

RF Dominguez, MLB da Silva, TM McGuire, D Adamson, CJ Newell, ...  Aerobic Bioremediation of Chlorobenzene Source-zone Soil in Flow-through Columns: Performance Assessment Using Quantitative PCR, Biodegradation 19 (4), 545-553.

2007

F Ahmad, SP Schnitker, CJ Newell. Remediation of RDX-and HMX-contaminated Groundwater Using Organic Mulch Permeable Reactive Barriers, Journal of contaminant hydrology 90 (1-2), 1-20.

2006   

CJ Newell, I Cowie, TM McGuire, WW McNab Jr. Multiyear Temporal Changes in Chlorinated Solvent Concentrations at 23 Monitored Natural Attenuation Sites, Journal of Environmental Engineering 132 (6), 653-663.

TM McGuire, JM McDade, CJ Newell. Performance of DNAPL Source Depletion Technologies at 59 Chlorinated Solvent‐impacted Sites, Groundwater Monitoring & Remediation 26 (1), 73-84.

2005

M Ling, HS Rifai, CJ Newell. Optimizing Groundwater Long‐term Monitoring Networks Using Delaunay Triangulation Spatial Analysis Techniques, Environmetrics: The official journal of the International Environmetrics …

CJ Newell, DT Adamson. Planning‐level Source Decay Models to Evaluate Impact of Source Depletion on Remediation Time Frame, Remediation Journal: The Journal of Environmental Cleanup Costs …

JT Wilson, CJ Newell, J Seaberg, BE Rittmann, TH Wiedemeier, ... Monitored Natural Attenuation Panel: The Use of Modeling to Predict MNA and Social Issues of Active Remediation Versus MNA, Remediation Journal: The Journal of Environmental Cleanup Costs …

JM McDade, TM McGuire, CJ Newell. Analysis of DNAPL Source‐depletion Costs at 36 Field Sites, Remediation Journal: The Journal of Environmental Cleanup Costs …

2004

TM McGuire, CJ Newell, BB Looney, KM Vangelas, CH Sink. Historical Analysis of Monitored Natural Attenuation: A Survey of 191 Chlorinated Solvent Sites and 45 Solvent Plumes, Remediation Journal: The Journal of Environmental Cleanup Costs …

M Ling, HS Rifai, JJ Aziz, CJ Newell, JR Gonzales, JM Santillan. Strategies and Decision-Support Tools for Optimizing Long-Term Groundwater Monitoring Plans—MAROS 2.0, Bioremediation journal 8 (3-4), 109-128.

2003

MD Lee, R Miller, T Evanson, CJ Newell, JT Wilson. Monitored Natural Attenuation Forum: A Panel Discussion, Remediation Journal: The Journal of Environmental Cleanup Costs …

JJ Aziz, M Ling, HS Rifai, CJ Newell, JR Gonzales. MAROS: A Decision Support System for Optimizing Monitoring Plans, Ground Water, 41(3), 355–367.

M Ling, HS Rifai, CJ Newell, JJ Aziz, JR Gonzales. Groundwater Monitoring Plans at Small-scale Sites—An Innovative Spatial and Temporal Methodology, Journal of Environmental Monitoring 5 (1), 126-134.

2001

HS Rifai, CJ Newell, TH Wiedemeier. Natural Attenuation of Chlorinated Solvents in Ground Water Contamination Cleanup: Natural Attenuation and Advanced Remediation Technologies, Handbook of Solvents. Ontario, ChemTec Publishing, 2001., 1571-1630.

2000

HS Rifai, CJ Newell, JR Gonzales, JT Wilson. Modeling Natural Attenuation of Fuels with BIOPLUME III, Journal of Environmental Engineering 126 (5), 428-438.

1999

TH Wiedemeier, HS Rifai, CJ Newell, JT Wilson. Natural Attenuation of Fuels and Chlorinated Solvents in the Subsurface, John Wiley & Sons.

1995

CJ Newell, SD Acree, RR Ross, SG Huling. Ground Water Issue: Light Nonaqueous Phase Liquids, Groundwater Services, Inc., Houston, TX (United States)

1994

FS Shipley, CJ Newell, PB Bedient, RW McFarlane, HS Rifai. The State of the Bay, Galveston Bay National Estuary Program, The Galveston Bay National Estuary Program.

1992

CJ Newell. Estimating Potential for Occurrence of DNAPL at Superfund Sites, USEPA Quick Reference Fact Sheet.

1990

CJ Newell, LP Hopkins, PB Bedient. A Hydrogeologic Database for Ground‐water Modeling, Groundwater 28 (5), 703-714.

CJ Newell, JF Haasbeek, PB Bedient. OASIS: A Graphical Decision Support System for Ground‐Water Contaminant Modeling, Groundwater 28 (2), 224-234.

1980   

PB Bedient, RW Hall, CJ Newell. Modeling the Environmental Effects of a Navigation Channel in Tidal Bay, AWRA Journal of the American Water Resources Association 16 (5), 881-88.