David Alden

David Alden

17 articles
United States Tersus Environmental

Biography

David serves as the Manager of Technical Services at Tersus Environmental, where he is a dedicated professional with extensive experience in environmental engineering and technical services. In this pivotal role, David is instrumental in fostering innovation and excellence within the realm of environmental solutions. He provides crucial technical support for Tersus' biotechnology-based solutions, specializing in the management of complex environmental liabilities and cost reduction for site closure. David's academic journey includes earning a degree in Civil Engineering from Universidad de las Americas-Puebla, Mexico, and a master's degree from Joseph Fourier University in Grenoble, France. With this diverse educational background, he brings a unique perspective to his position. Having spent four years in the upstream oilfield sector, David contributed significantly to offshore well tests and completion design and installation in the Gulf of Mexico. His expertise extends to in situ oil-shale extraction experiments in the Piceance Basin, Northwestern Colorado, with a primary focus on safeguarding groundwater. A key aspect of David's work revolves around the development of innovative technologies for restoring groundwater and soil in challenging sites. He has authored three patents on reductive bioremediation and in situ chemical reduction, with US Patent 11,123,779 B2 titled "Method and a Chemical Composition for Accelerated In Situ Biochemical Remediation" being a notable contribution. Additionally, he has eight pending patent applications for groundwater contaminant remediation. Managing the companies Compound-Specific Isotope Analysis (CSIA) projects, David showcases his commitment to staying at the forefront of industry advancements by applying cutting-edge techniques to assess environmental contaminants. David leverages his expertise in CSIA to provide a quantitative means for differentiating reaction pathways—shedding light on the intricate processes of abiotic and biotic degradation. This not only enhances our understanding of environmental challenges but also paves the way for more targeted and effective solutions. David also employs molecular biologic tools to assess remediation performance. By integrating cutting-edge techniques, he ensures that our environmental solutions are not only efficient but also sustainable in the long run. Beyond his professional accomplishments, David actively engages in community initiatives focused on environmental awareness and sustainability. His multifaceted background and dedication to finding sustainable solutions position him as a thought leader in the environmental engineering field. David's comprehensive experience, innovative approach, and unwavering commitment make him a driving force behind Tersus Environmental's mission to provide sustainable and effective solutions to complex environmental challenges.

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Showing 17 of 17
(Group 1, Poster Board #219) In Situ Treatment of Chlorinated Solvent Source Zone: Injection Design and Treatment Performance Assessed with Compound-Specific Isotope Analysis
Daniel Bouchard GHD
Tyson Fulmer CE Solutions
David Alden Tersus Environmental
G1. Innovations in ZVI Amendment Formulations and Applications (Poster) Poster
G1.: Innovations in ZVI Amendment Formulations and Applications (Poster)
13th International Conference on Remediation of Chlorinated and Recalcitrant Compounds
(Group 2, Poster Board #163) Heat-Enhanced Catalyzed Reductive Bioremediation
Gary Birk Tersus Environmental
David Alden Tersus Environmental
Guilherme Figueiredo Tersus Environmental
Jeff Roberts SiREM
+1 more
G6. Thermally-Enhanced In Situ Degradation Processes at Sub-Boiling Temperatures (Poster) Poster
G6.: Thermally-Enhanced In Situ Degradation Processes at Sub-Boiling Temperatures (Poster)
13th International Conference on Remediation of Chlorinated and Recalcitrant Compounds
(Group 1, Poster Board #42) Forensic Applications of Groundwater and Contaminant Mass Flux Analysis in Aquifer Characterization
David Alden Tersus Environmental
Marjan Joris iFLUX
Erik Bosmans iFLUX
Gary Birk Tersus Environmental
B3. Tools for Assessing Contaminant Sources and Fate (Posters) Poster Poster
B3.: Tools for Assessing Contaminant Sources and Fate (Posters)
2025 Bioremediation Symposium
Can ISCO Promote Biodegradation? Synergistic Effects of Combining Sodium Persulfate and Sulfate-Enhanced Biostimulation Relying on Reusable Direct Push Points
David Alden Tersus Environmental
Carlo Bianco Politecnico di Torino
Gary Birk Tersus Environmental
David Wiley TWS Environmental
+2 more
D2. Innovative and Efficient Amendment Delivery Strategies (Platforms) Platform Attachment
D2.: Innovative and Efficient Amendment Delivery Strategies (Platforms)
2025 Bioremediation Symposium
Evaluating In Situ Carbon Tetrachloride Remediation: Insights from Diverse Performance Monitoring Tools
David Alden Tersus Environmental
Gary Birk Tersus Environmental
Corey Scales SiREM
Rod Baumann Trimedia
D4. Challenges in Application of Bioremediation Tools (Platforms) Platform Attachment
D4.: Challenges in Application of Bioremediation Tools (Platforms)
2025 Bioremediation Symposium
Advances in Heat-Enhanced Reductive Bioremediation
David Alden Tersus Environmental
Gary Birk Tersus Environmental
Michael Healey SiREM
John Sankey True Blue Technologies
E7. Advances in Heat-Enhanced Bioremediation (Platforms) Platform Attachment
E7.: Advances in Heat-Enhanced Bioremediation (Platforms)
2025 Bioremediation Symposium
Targeted TCE DNAPL Recovery from a Complex Bedrock Aquifer: Field and Laboratory Studies
Michael Healey SiREM
David Alden Tersus Environmental
Gary Birk Tersus Environmental
Sachin Sharma WSP
+1 more
D7. Bioremediation in Complex Geological Settings (Platforms) Platform Attachment
D7.: Bioremediation in Complex Geological Settings (Platforms)
2025 Bioremediation Symposium
Identifying Preferential Flow Paths Using iFLUX Samplers: Quantifying Groundwater and Contaminant Flux at Discrete Depths
David Alden Tersus Environmental
Marjan Joris iFLUX
Sarah Moore Tersus Environmental
Gary Birk Tersus Environmental
+1 more
F1. High-Resolution Site Characterization (HRSC) (Platforms) Platform Attachment
F1.: High-Resolution Site Characterization (HRSC) (Platforms)
14th International Conference on Remediation of Chlorinated and Recalcitrant Compounds
Evaluating In Situ Carbon Tetrachloride Remediation: Insights from Diverse Performance Monitoring Tools
David Alden Tersus Environmental
Rod Baumann Trimedia
Kevin Kuntze Isodetect
Philip Dennis SiREM
+1 more
G3. Compound-Specific Isotope Analysis: Case Studies in Evaluating Remedy Performance (Platforms) Platform Attachment
G3.: Compound-Specific Isotope Analysis: Case Studies in Evaluating Remedy Performance (Platforms)
14th International Conference on Remediation of Chlorinated and Recalcitrant Compounds
(Group 1, Poster Board #32) PFAS Flux Approach for Making Data-Driven Decisions in an Evolving Regulatory Environment
William Leys AECOM
Bram Van Humbeeck AECOM
Erik Bosmans iFLUX
Marjan Joris iFLUX
+2 more
A5. PFAS Fate and Transport at Contaminated Sites (Posters) Poster Poster
A5.: PFAS Fate and Transport at Contaminated Sites (Posters)
14th International Conference on Remediation of Chlorinated and Recalcitrant Compounds
(Group 1, Poster Board #129) Coupled Iron and Sulfate Reduction Drive Abiotic and Biogeochemical Pathways for Chlorinated Solvent Remediation
Sarah Moore Tersus Environmental
David Alden Tersus Environmental
Gary Birk Tersus Environmental
John Sankey True Blue Technologies
D1. Abiotic and In Situ Biogeochemical Processes: Applications and Lessons Learned (Posters) Poster Poster
D1.: Abiotic and In Situ Biogeochemical Processes: Applications and Lessons Learned (Posters)
14th International Conference on Remediation of Chlorinated and Recalcitrant Compounds
(Group 1, Poster Board #140) Why Am I Seeing Acetone in My Performance Monitoring?
Gary Birk Tersus Environmental
David Alden Tersus Environmental
Sarah Moore Tersus Environmental
John Sankey True Blue Technologies
+1 more
D3. In Situ Technologies: Lessons Learned (Posters) Poster Poster
D3.: In Situ Technologies: Lessons Learned (Posters)
14th International Conference on Remediation of Chlorinated and Recalcitrant Compounds
(Group 1, Poster Board #165) Advancing Biogeochemical Amendments to Enhance Coupled Iron and Sulfate Reduction for CVOC Remediation
David Alden Tersus Environmental
Gary Birk Tersus Environmental
John Sankey True Blue Technologies
Sarah Moore Tersus Environmental
+1 more
D7. Bioremediation: Advances in Amendment Formulations (Posters) Poster Poster
D7.: Bioremediation: Advances in Amendment Formulations (Posters)
14th International Conference on Remediation of Chlorinated and Recalcitrant Compounds
(Group 1, Poster Board #168) Enhanced Reductive Bioremediation via In Situ Alcoholysis of Electron Donor Amends for Chlorinated Solvent Source Zones
John Sankey True Blue Technologies
David Alden Tersus Environmental
Sarah Moore Tersus Environmental
Gary Birk Tersus Environmental
D7. Bioremediation: Advances in Amendment Formulations (Posters) Poster Poster
D7.: Bioremediation: Advances in Amendment Formulations (Posters)
14th International Conference on Remediation of Chlorinated and Recalcitrant Compounds
(Group 1, Poster Board #211) Rethinking Remediation: How Multiple Fluorescent Dye Tracers Changed Understanding of In Situ Remediation Performance
David Alden Tersus Environmental
Trevor Osorno Ozark Underground Lab
Gary Birk Tersus Environmental
F2. Conceptual Site Models: Improvements in Development and Application (Posters) Poster Poster
F2.: Conceptual Site Models: Improvements in Development and Application (Posters)
14th International Conference on Remediation of Chlorinated and Recalcitrant Compounds
(Group 1, Poster Board #240) Rethinking Remediation: How CSIA Changed the Game for Site Managers
David Alden Tersus Environmental
Daniel Bouchard GHD
Orfan Shouakar-Stash Isotope Tracer Technologies Inc.
Pat Mcloughlin MES
+1 more
G3. Compound-Specific Isotope Analysis: Case Studies in Evaluating Remedy Performance (Posters) Poster Poster
G3.: Compound-Specific Isotope Analysis: Case Studies in Evaluating Remedy Performance (Posters)
14th International Conference on Remediation of Chlorinated and Recalcitrant Compounds
(Group 2, Poster Board #276) Enhancing Biodegradation in Clay-Rich Soils: A Combined ISCO and Biostimulation Approach Using Reinjectable DPT Points
David Alden Tersus Environmental
Carlo Bianco Politecnico di Torino
Gary Birk Tersus Environmental
David Wiley TWS Environmental
+1 more
H9. Low-Permeability Zone Treatment Approaches, Permeability Enhancements, and Case Studies (Posters) Poster Poster
H9.: Low-Permeability Zone Treatment Approaches, Permeability Enhancements, and Case Studies (Posters)
14th International Conference on Remediation of Chlorinated and Recalcitrant Compounds