Charles Newell
30 articles
United States
GSI Environmental Inc.
Biography
Dr. Charles Newell is a Vice President of GSI Environmental Inc. He is a member of the American Academy of Environmental Engineers and a NGWA Certified Ground Water Professional. He has extensive experience in the remediation of impacted soils, groundwater, and surface water for a variety of contaminants including PFAS. He was awarded the 2018 ITRC Environmental Excellence Award; the 2020 Foundation Achievement Award presented by the Association for Environmental Health and Science; and the American Academy of Environmental Engineer’s 2024 Gordon Maskew Fair Award.
Publications by Year
Showing 25 of 30
The Gift that Keeps on Giving: Post-Bioremediation Sustained Treatment
TM
KW
CN
Travis McGuire
GSI Environmental Inc.
Kenneth Walker
GSI Environmental Inc.
DA
David Adamson
GSI Environmental Inc.
Charles Newell
GSI Environmental Inc.
Attachment
B3.: Remedy Implementation: Assessing Performance and Costs (Platform)
13th International Conference on Remediation of Chlorinated and Recalcitrant Compounds
Gas Sparging Directly in Aquifers To Remove or Retain PFAS: Literature, Experiments, and Modeling
CN
ES
Charles Newell
GSI Environmental Inc.
Emily Stockwell
GSI Environmental Inc.
HH
Hiroko Hort
GSI Environmental Inc.
JW
+5 more
Jordan White
Colorado State University
Attachment
E2.: In Situ PFAS Treatment Approaches (Platform)
13th International Conference on Remediation of Chlorinated and Recalcitrant Compounds
Recharge at PFAS-Impacted Sites: The Other Half of the Mass Discharge Story
KW
ES
Kenneth Walker
GSI Environmental Inc.
Emily Stockwell
GSI Environmental Inc.
JA
Jessica Alanis
GSI Environmental Inc.
DA
+2 more
David Adamson
GSI Environmental Inc.
Attachment
I3.: PFAS Fate and Transport (Platform)
13th International Conference on Remediation of Chlorinated and Recalcitrant Compounds
Historical Lessons Learned: What Might PFAS Site Closure Look Like?
JG
CN
Jeff Gamlin
GSI Environmental Inc
Charles Newell
GSI Environmental Inc.
Attachment
E9.: PFAS Site Characterization (Platform)
13th International Conference on Remediation of Chlorinated and Recalcitrant Compounds
Abiotic Degradation Can Account for Rate Constants for Natural Attenuation of TCE and cDCE in Groundwater
JW
MF
John Wilson
Scissortail Environmental Solutions, Inc.
BW
Barbara Wilson
Scissortail Environmental Solutions, LLC
Mark Ferrey
Minnesota Pollution Control Agency
DF
+3 more
David Freedman
Clemson University
Attachment
H4.: Abiotic and In Situ Biogeochemical Processes: Applications and Lessons Learned (Platform)
13th International Conference on Remediation of Chlorinated and Recalcitrant Compounds
The Role of Precursor Transformation on PFAS Fate and Transport in the Saturated Zone
ES
JG
Emily Stockwell
GSI Environmental Inc.
Jeff Gamlin
GSI Environmental Inc
PK
Poonam Kulkarni
GSI Environmental Inc.
DA
+2 more
David Adamson
GSI Environmental Inc.
Attachment
I4.: PFAS Fate and Transport Properties (Platform)
13th International Conference on Remediation of Chlorinated and Recalcitrant Compounds
PFAS in Stormwater at PFAS Sites: Characteristics, Tools, and Potential Management Strategies
CN
Charles Newell
GSI Environmental Inc.
HJ
Hassan Javed
GSI Environmental Inc.
NJ
Nicholas Johnson
GSI Environmental Inc.
ML
+4 more
Matthew Lentz
GSI Environmental Inc.
Attachment
I7. : PFAS Program Management in a Rapidly Changing Regulatory Environment (Platform)
13th International Conference on Remediation of Chlorinated and Recalcitrant Compounds
Characterization of Relevant PFAS Fate and Transport Processes at Multiple AFFF Sites Using a Mass Balance Approach
CN
RI
+2 more
DA
David Adamson
GSI Environmental Inc.
Charles Newell
GSI Environmental Inc.
PK
Poonam Kulkarni
GSI Environmental Inc.
Ramona Iery
U.S. Navy/EXWC
Attachment
I5.: PFAS Conceptual Site Model Approaches (Platform)
13th International Conference on Remediation of Chlorinated and Recalcitrant Compounds
(Group 1, Poster Board #199) Using Colloidal Gas Aphrons to Remove PFAS from Water: Technology Development Status
CN
NJ
Nicholas Johnson
GSI Environmental Inc.
Charles Newell
GSI Environmental Inc.
PK
Poonam Kulkarni
GSI Environmental Inc.
HJ
+2 more
Hassan Javed
GSI Environmental Inc.
E4. Ex Situ PFAS Treatment Approaches (Poster)
Poster
E4.: Ex Situ PFAS Treatment Approaches (Poster)
13th International Conference on Remediation of Chlorinated and Recalcitrant Compounds
(Group 2, Poster Board #242) Data Evaluation Framework for Refining PFAS Conceptual Site Models
JG
CN
Jeff Gamlin
GSI Environmental Inc
Charles Newell
GSI Environmental Inc.
I5. PFAS Conceptual Site Model Approaches (Poster)
Poster
I5.: PFAS Conceptual Site Model Approaches (Poster)
13th International Conference on Remediation of Chlorinated and Recalcitrant Compounds
(Group 1, Poster Board #21) Estimating the Longevity of Colloidal Activated Carbon Barriers for PFAS Treatment in Groundwater
WS
Wade Smith
GSI Environmental Inc.
KK
Kade Kearney
GSI Environmental Inc.
SC
Sage Clay
GSI Environmental Inc.
HJ
+4 more
Hassan Javed
GSI Environmental Inc.
A4. Activated Carbon-Based PFAS Treatment Technologies (Posters)
Poster
Poster
A4.: Activated Carbon-Based PFAS Treatment Technologies (Posters)
2025 Bioremediation Symposium
Optimizing Long-Term Groundwater Monitoring Programs Using the New MAROS Web App
NG
Noah Goodkind
GSI Environmental Inc.
LB
Lila Beckley
GSI Environmental Inc.
BS
Brandon Sackmann
GSI Environmental Inc.
BA
+1 more
Blake Actkinson
GSI Environmental
B5. Tools for Site Assessment and Bioremediation Monitoring (Platforms)
Platform
Attachment
B5.: Tools for Site Assessment and Bioremediation Monitoring (Platforms)
2025 Bioremediation Symposium
Determining PFAA Plume Stability Condition Quickly and Efficiently
TM
CN
Thomas McHugh
GSI Environmental
DA
David Adamson
GSI Environmental Inc.
BA
Blake Actkinson
GSI Environmental
Charles Newell
GSI Environmental Inc.
A7. Managing PFAS Regulatory Uncertainty in Response Actions (Platforms)
Platform
Attachment
A7.: Managing PFAS Regulatory Uncertainty in Response Actions (Platforms)
2025 Bioremediation Symposium
(Group 2, Poster Board #21) Use of the REMChlor-MD Model for Evaluation of Passive and Active PFAS Remediation Alternatives
MM
CN
ES
+3 more
Michael Mathioudakis
GSI Environmental Inc.
Charles Newell
GSI Environmental Inc.
PK
Poonam Kulkarni
GSI Environmental Inc.
Emily Stockwell
GSI Environmental Inc.
B6. Modeling and Monitoring Approaches to Improve Remedy Design and Implementation (Posters)
Poster
Poster
B6.: Modeling and Monitoring Approaches to Improve Remedy Design and Implementation (Posters)
2025 Bioremediation Symposium
(Group 1, Poster Board #64) PFAS Mass Discharge: Multiple Techniques to Measure Hydrology and Chemistry
KW
ES
RC
Kenneth Walker
GSI Environmental Inc.
Emily Stockwell
GSI Environmental Inc.
Roger Craycroft
GSI Environmental Inc.
BA
+1 more
Blake Actkinson
GSI Environmental
C3. Emerging Contaminants: Detection, Degradation, Fate and Transport (Posters)
Poster
C3.: Emerging Contaminants: Detection, Degradation, Fate and Transport (Posters)
2025 Bioremediation Symposium
Panel Discussion: “Mr. Right” versus “Mr. Right Now”: What Does the Future Hold for PFAS Remedial Solutions
JG
RG
CN
+2 more
SA
Stewart Abrams
Langan Engineering
Jeff Gamlin
GSI Environmental Inc
Rosa Gwinn
AECOM
Charles Newell
GSI Environmental Inc.
Panel Discussion
Attachment
14th International Conference on Remediation of Chlorinated and Recalcitrant Compounds
Application of Colloidal Gas Aphrons (CGAs) for the Removal of PFAS from Different Site Groundwaters and Reverse Osmosis Concentrate (ROC)
PK
NJ
Poonam Kulkarni
GSI Environmental Inc.
Nicholas (Nick) Johnson
GSI Environmental Inc.
JC
John Connor
GSI Environmental Inc.
HJ
+10 more
Hassan Javed
GSI Environmental Inc.
B7. Ex Situ PFAS Water Treatment Technologies (Platforms)
Platform
Attachment
B7.: Ex Situ PFAS Water Treatment Technologies (Platforms)
14th International Conference on Remediation of Chlorinated and Recalcitrant Compounds
Gas Sparging Directly in Aquifers to Remove or Sequester PFAS
ES
CN
Emily Stockwell
GSI Environmental Inc.
Charles Newell
GSI Environmental Inc.
CL
Calvin Leong
GSI Environmental Inc.
JS
+1 more
Joseph Scalia IV
Colorado State University
C1. In Situ PFAS Treatment Approaches (Platforms)
Platform
Attachment
C1.: In Situ PFAS Treatment Approaches (Platforms)
14th International Conference on Remediation of Chlorinated and Recalcitrant Compounds
Avoiding Common Failure Points in PFAS Groundwater Remediation: Options, Pitfalls, and Practical Fixes
DA
CN
David Adamson
GSI Environmental Inc.
Charles Newell
GSI Environmental Inc.
C10. Avoiding Past Pitfalls: What Legacy Remediation Teaches Us About PFAS Response Strategies (Platforms)
Platform
Attachment
C10.: Avoiding Past Pitfalls: What Legacy Remediation Teaches Us About PFAS Response Strategies (Platforms)
14th International Conference on Remediation of Chlorinated and Recalcitrant Compounds
PFAS Remediation 2026 versus 2036: A Case Study and Prediction for the Future
CN
DA
SA
Stewart Abrams
Langan Engineering
Charles Newell
GSI Environmental Inc.
AO
Amita Oka
Langan Engineering
David Adamson
GSI Environmental Inc.
C10. Avoiding Past Pitfalls: What Legacy Remediation Teaches Us About PFAS Response Strategies (Platforms)
Platform
Attachment
C10.: Avoiding Past Pitfalls: What Legacy Remediation Teaches Us About PFAS Response Strategies (Platforms)
14th International Conference on Remediation of Chlorinated and Recalcitrant Compounds
An Integrated Macroporosity/Microporosity Model for PFAS Transport in Concrete
CN
Charles Newell
GSI Environmental Inc.
KS
Katlyn Schmeltzer
GSI Environmental Inc.
PD
Phillip de Blanc
GSI Environmental Inc.
SJ
+2 more
Samuel Jacob
Colorado State University
C4. PFAS Conceptual Site Model Approaches (Platforms)
Platform
Attachment
C4.: PFAS Conceptual Site Model Approaches (Platforms)
14th International Conference on Remediation of Chlorinated and Recalcitrant Compounds
Characteristics of Aqueous Film Forming Foam (AFFF) Sites Impacted with Per- and Polyfluoroalkyl Substances (PFAS): A 37-Site Study
PK
Poonam Kulkarni
GSI Environmental Inc.
NA
Nicolette Andrzejczyk
US Navy/NAVFAC
AG
Arun Gavaskar
NAVFAC EXWC
AC
+2 more
Abigail Cartwright
GSI Environmental Inc.
C6. PFAS Site Characterization (Platforms)
Platform
Attachment
C6.: PFAS Site Characterization (Platforms)
14th International Conference on Remediation of Chlorinated and Recalcitrant Compounds
A Long Way to Go: A Potential Framework for Multi-Site PFAS Groundwater Management
CN
DA
Charles Newell
GSI Environmental Inc.
JC
John Cook
Colorado School of Mines
David Adamson
GSI Environmental Inc.
PH
Paul Hatzinger
APTIM
C7. PFAS Program Management in a Rapidly Changing Regulatory Environment (Platforms)
Platform
Attachment
C7.: PFAS Program Management in a Rapidly Changing Regulatory Environment (Platforms)
14th International Conference on Remediation of Chlorinated and Recalcitrant Compounds
Two PFAS Groundwater Models for Saturated-Zone Transport and Remediation: REMFluor-MD and USGT-PFAS
CN
Charles Newell
GSI Environmental Inc.
RF
Ronald Falta
Clemson University
HH
Hiroko Hort
GSI Environmental Inc.
SP
+4 more
Sorab Panday
GSI Environmental Inc.
F4. Groundwater Modeling: Advancements and Applications (Platforms)
Platform
Attachment
F4.: Groundwater Modeling: Advancements and Applications (Platforms)
14th International Conference on Remediation of Chlorinated and Recalcitrant Compounds
(Group 1, Poster Board #35) PFAS Mass Discharge: Comparison of Field Techniques to Measure Hydrology and Chemistry
KW
ES
RC
Kenneth Walker
GSI Environmental Inc.
Emily Stockwell
GSI Environmental Inc.
Roger Craycroft
GSI Environmental Inc.
BA
+2 more
Blake Actkinson
GSI Environmental
A5. PFAS Fate and Transport at Contaminated Sites (Posters)
Poster
A5.: PFAS Fate and Transport at Contaminated Sites (Posters)
14th International Conference on Remediation of Chlorinated and Recalcitrant Compounds