Utilizing CSIA to Assess Source and Fate of Contaminants, and the Performance of Remediation Treatments

Wed, March 22, 2023 1:00 PM - 5:00 PM CST

This course aims to present the latest advancement in the applications of compound-specific isotopes analysis (CSIA) and environmental isotopes as forensic tools discern the origin of specific contaminants and characterizing and assessing the fate of different contaminants released in the environment. The potential audience includes environmental professionals, engineers, regulators, and community stakeholders engaged in the management and remediation of contaminated sites.

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Technical Program

 30 min      Collection, Preservation and Storage of Samples – laboratory issues and quality control 
 30 min    CSIA, environmental and other stable isotopes applications
 30 min    Interpretation of isotope data from field studies; enrichment factors and other important data from the literature 
 45 min    CSIA application for source apportionment: cases studies
 45 min    CSIA for natural attenuation evaluation: case studies
 30 min    The use of CSIA to assess the performance of on-going remediation technologies: case studies
 30 min    The application of stable isotopes vapour intrusion


Event Information

Event Date 03-22-2023
Cut Off Date 03-21-2023
Individual Price $225.00
Location Online Webinar



David F. Alden, P.E. (NC)

Manger, Technical Services at Tersus Environmental

David provides technical support for Tersus’ portfolio of biotechnology-based solutions to manage complex, challenging environmental liabilities and reduce costs for site closure.  He also manages the company’s CSIA projects.  He is a graduate of Universidad de las Americas-Puebla, Mexico, where he majored in Civil Engineering with a focus on waste-water treatment, has master’s degree from Joseph Fourier University in Grenoble, France, and he holds registration as a Professional Engineer in North Carolina. David worked for four years in the upstream oilfield sector performing offshore well tests and completion design and installation in the Gulf of Mexico. He participated in the in situ oil-shale extraction experiment in the Piceance Basin in Northwestern Colorado, where protecting groundwater was the main challenge. David's focus also includes development of innovative technologies to restore groundwater and soil at challenging sites. He is the lead author for US Patent 11,123,779 B2, Method and a Chemical Composition for Accelerated In Situ Biochemical Remediation. This patent is generally directed toward a method for supplying a mixture comprising ferrous sulfide and zero-valent metal particle reactants into soil pathways to biologically react with dissolved contaminants in groundwater.  David has five pending patent applications for remediation of contaminants in groundwater.

Dr. Orfan Shouakar-Stash

CEO, Isotope Tracer Technologies Inc.

Dr. Shouakar-Stash is an isotope hydro-geochemist with over 20 years of experience. He is the CEO of Isotope Tracer Technologies Inc. (IT2), and an adjunct Professor at the School of Engineering at the University of Guelph, as well as in the Department of Earth and Environmental Sciences at the University of Waterloo.

Research interests:
Dr. Shouakar-Stash’s research interests relate to the development and implementation of isotopic tools in organic and inorganic contaminant investigations, and studies of water quality analysis.

More specifically, he has been actively pursuing the development of using hydrogen, chlorine and bromine isotopes for investigating chlorinated solvents, being a potentially impactful tool for studies related to groundwater contamination.

Sasha Tom Hart, MSc

Technical and Strategic Consultant

Sasha is a contaminated land and water resource consultant with over 25 years of experience and has delivered successful projects in industrial, urban, mining and agriculture areas throughout more than 15 countries. He has a MSc. in Environmental Technology and Water Management from Imperial College (United Kingdom) and this year is completing his PhD in Hydrogeology at University of São Paulo, Brazil. His research includes isotopic uses for source, commingled plumes and remediation applications, based on the development of conceptual models even for complex settings (such as fractured bedrock and megasites). This has contributed to the rehabilitation or areas, safe use of soil/groundwater, several published papers, a book about Forensic Isotopes, presentations and post-graduate courses (he teaches at University of São Paulo and SENAC in Brazil). He has also supported the setup and development of NICOLE LA (Latin America Network for Soil and Groundwater Management), INSOP (International Network on Soil Pollution of FAO, UN) and ReNIF (Rede Nacional de Isótopos Forenses – Brazilian Network of Forensic Isotopes).