March 7, 2017

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Geosyntec’s Dr. Jason Conder to Present to the Louisiana State Bar Association’s Environmental Law Section

Dr. Jason Conder (Huntington Beach, California) will be the first to present in a series of continuing legal education (CLE) events for the Environmental Law Section of the Louisiana State Bar Association (LSBA) on March 28, 2017. Dr. Conder's presentation is entitled "Passive Sampling – An Innovative Technology for Evaluation of Petroleum Impacted Sediments."

LSBA members are welcome to attend the presentation in the Taylor Porter Founder's Room, located in Baton Rouge, Louisiana.  Registration is requested in advance; contact information for Michelle White, LSBA, Environmental Section Chair, is provided below.  Attendance is complimentary for LSBA members and is requested by March 21st.

Reception and sign in will occur from 11:45 a.m. – noon, and the CLE presentation will commence at noon and end around 1:00 p.m.  Lunch will be provided.

Also attending the CLE presentation, on behalf of Geosyntec, is Valerie Mayhall, M.S., J.D. (Baton Rouge, Louisiana), a member of the Environmental Law Section of the LSBA and coordinator of the event (along with Michelle White), and Lance Fontenot, Ph.D. (Baton Rouge, Louisiana).


Dr. Jason Conder is a senior scientist with more than 15 years of experience in environmental toxicology, ecological and human health risk assessment, bioaccumulation and bioavailability of environmental contaminants, environmental chemistry, environmental monitoring technology, ecology, and statistics. He has provided technical expertise in risk assessment, environmental toxicology, and environmental chemistry to multinational clients addressing environmental liability and risk issues associated with contaminated sites, including several large, multi-stakeholder contaminated sediment sites in North America, Europe and Asia. Dr. Conder is an internationally-recognized expert on passive sampling of organic chemicals in sediment, water, and soil, with 20 years of research and consulting experience in method development, application, and commercialization (including one patent pending on passive sampling and development of the SP3TM polyethylene passive sampling service). He has published more than 20 peer‑reviewed articles in environmental toxicology and chemistry, presented technical work at numerous international scientific conferences, and has served on and co-chaired several technical workshops.

Presentation Abstract

Waterway sediments represent one of the most complicated and expensive liabilities for many industrial and petroleum clients, with costs for many legacy sites in the multi-million dollar range. Issues for many of these sites focus primarily on the presence of petroleum chemicals, particularly their potential effects on fish and other natural aquatic resources. However, sediment is a complex environmental matrix composed of a diverse mixture of materials than can greatly affect the mobility and behavior of petroleum chemicals, especially with regards to the potential for adverse effects that drive site decisions and regulatory concerns. Traditional measurement techniques for understanding these chemicals in sediment are widely known to over-predict chemical risks, leading to overly-protective sediment management actions that can waste hundreds of thousands to millions of dollars per site.

Recently, a new technique – Passive Sampling – has become available to provide a more robust assessment of sediment contamination. Passive sampling involves exposure of an inert, sorptive solid device into sediment, followed by the analysis of the chemicals absorbed by the sampler. In this way, passive sampling mimics chemical uptake by fish and other aquatic life, the key focus of the most sensitive environmental regulations. The resulting passive data offer a more realistic view of chemical risks, avoiding overly-stringent and expensive sediment management approaches. Because the technology has now fully transitioned from pure research to routine application (with state and federal regulatory support), costs to apply passive sampling represent only a modest 20-30% additional investment for typical site investigation budgets. Due to the additional confidence in site assessments that can be provided by passive sampling data, many contaminated sites can realize sediment management cost savings approaching several thousand to several millions of dollars.

This presentation will provide an overview of passive sampling science and strategic application to contaminated sediment assessment and management, drawing from the speaker's 20-year experience in passive sampling and recent development of commercial passive sampling services in the environmental consulting industry. A key focus of the presentation will be the state and federal regulatory acceptance of the approach, including several examples and case studies on the use of passive sampling to aid decision-making at contaminated sites.

More Information

For more information regarding registration for this event, please contact Michelle White, at 225-939-9345, or This email address is being protected from spambots. You need JavaScript enabled to view it..
For more information on passive sampling to evaluate impacted sediments, please contact either Jason Condor at This email address is being protected from spambots. You need JavaScript enabled to view it. or Lance Fontenot at This email address is being protected from spambots. You need JavaScript enabled to view it..
To learn more about Jason, visit his profile at: