June 2, 2022

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Karen Bechard, Paul Nicolson, and Dogus Meric Present at Remediation Technologies Symposium East.

Karen Bechard, Paul Nicolson, P.Eng. (Ontario), and Dogus Meric, Ph.D., P.E. (Illinois) are presenting Remediation Technologies Symposium East (RemTech East) at the Fallsview Casino Resort in Niagara Falls, Ontario from June 1 to 3, 2022.

Karen is a Project Scientist based in Ontario with more than 12 years of experience focused on risk assessment and toxicology. Her areas of expertise include human health and ecological risk assessment and toxicological review, evaluation of risk management measures, and data quality assessments. As a toxicologist, she often reviews potential impacts to environmental receptors at points of compliance, and her work is integral to teams who characterize natural carbon sources and selenium and nitrate reduction in mining bioremediation treatment systems.

Paul is a Principal Engineer based in Guelph. He is a senior member of Geosyntec's vapor intrusion practice and has over 15 years of experience in environmental consulting, vapor intrusion assessment, and vapor intrusion mitigation design and construction. Currently, Paul focuses on cost-effective subslab mitigation systems, relying on more than a decade of research in this area.

Dogus is a Senior Environmental Engineer based in Chicago with more than 12 years of experience focused managing and remediating contaminated sediment sites. He develops tailored environmental solutions for brownfield and waterfront sites in North America and Australia, allowing them to be successfully redeveloped. His expertise focuses on delivering effective and economical solutions are tailored to a client's objectives and that achieve stakeholder/regulatory acceptance. He develops and leads multidisciplinary teams to solve complex problems from planning to design, construction, and closure. He has pioneered new sediment remediation technologies such as in-situ stabilization/solidification (ISS) of subaqueous sediments and thin-layer sediment capping.

RemTech East 2022 is hosted the Environmental Services Association of Alberta (ESAA). The first in a new format (the conference will now be held every second year in Ontario), RemTech East focuses  on remediation projects related to eastern Canada, including brownfields, industrial sites, mining, government projects, and more. With more than 200 member companies, ESAA is dedicated to building a strong environmental industry by providing programs that lead to its members' corporate success.

The event will be co-located with the Canadian Water Summit and will occur on the same days. Now in its 13th year, the Canadian Water Summit facilitates cooperation, collaboration and knowledge-sharing among the diverse groups that make up the Canadian water landscape as they build Canada's "Blue Economy." The conference addresses a range of topics related to drinking water, wastewater, and stormwater.

Presentations

Title: Use of Risk Assessment to Develop Remedial Goals
Presenters: Karen Bechard, QPRA
Time/Date: 1:20–1:50 p.m. EDT, Wednesday, June 1, 2022
Abstract:
Regulatory remediation goals are to remove or manage contamination in order to reduce risks to humans and ecological receptors to acceptable levels. Risk assessments (RA) evaluate the potential risks to human health and ecological receptors associated with impacted media at a site and develop site specific standards/guidelines that are protective of these risks. As a result, a RA is indubitably entwined with the development of remediation goals that are protective of current and future receptors. Remediation goals are typically met by 1) remediation down to the generic standards level (Tier 1); 2) remediation down to standards developed on a site-specific basis (Tier 2 or Tier 3); and/or 3) inclusion of institutional or engineered controls to manage the potential risk (Tier 2 or Tier 3 with risk management measures). This presentation compares how RAs can be used to develop remediation goals under several regulatory regimes in Canada. It will highlight how this can provide relief from using the conservative generic standards/guidelines for remediation by allowing the use of site-specific clean-up targets. This can result in significant cost savings. The challenges encountered with different remediation approaches and meeting site-specific standards/guidelines will be explored. Case studies will be provided to illustrate the application and benefit of understanding the RA framework in the process and cost-benefit of the coupled RA and remediation strategy.

Title: Tools to Reduce Vapour Intrusion Mitigation System Installation and Operating Costs for Brownfields
Presenter: Paul Nicolson, P.Eng.
Time/Date: 11:45 a.m.–12:15 p.m. EDT, Thursday, June 2, 2022
Abstract:
The presentation will focus on innovative methods to optimize the design of vapor intrusion mitigation systems. Such methods can reduce installation costs and reduce long-term operating costs, while remaining protective of human health. Historical mitigation methods are based on decades old radon research at residential buildings, however, new tools for mitigation systems at larger buildings have been developed by Geosyntec to offer an optimized approach. The presentation will explore simple additional methods for system testing and design that have been shown to provide a large return on investment for larger buildings and long-term operations cost savings.

Title: First to Field Mass Mixing In Situ Stabilization/Solidification Remediation in Unchartered Water of Kendall Bay
Presenter: Dogus Meric, Ph.D., P.E.
Time/Date: 8:30–9:00 am EDT, Friday, June 3, 2022
Abstract:
Once home to the largest manufactured gas plant (MGP) in the southern hemisphere, the former MGP site adjacent to Kendall Bay was remediated and developed for medium density residential use almost two decades ago. With an area of the shoreline declared a “Remediation Site” by the New South Wales Environmental Protection Agency. Utility provider Jemena subsequently prepared a voluntary management proposal for remediation of sediments within Kendall Bay that were impacted with hydrocarbons (polycyclic aromatic hydrocarbons, total recoverable hydrocarbons, and BTEX) by former MGP operations. The adjacent residential land use presented challenges for developing a remedial approach, requiring it to address impacted sediments while minimizing impacts to nearby residents. For this reason, in-situ stabilization/solidification (ISS) of impacted sediments and subsequent capping (rather than dredging) was selected as the preferred remedial approach. This method allows management of nuisance odor and minimization of truck traffic. Geosyntec shepherded this project from treatability study through full-scale remediation, which was completed in November 2020. This presentation provides an overview of the technical and design approach used to quickly move this project from a laboratory bench-scale treatability study to full-scale field application and presents lessons learned in overcoming many unexpected technical challenges.

More Information

About the event: RemTech East
About ESAA: https://esaa.org/
For consultation regarding Risk Assessment or Remediation, contact Karen Bechard at This email address is being protected from spambots. You need JavaScript enabled to view it..
Learn more about Karen: Karen Béchard | LinkedIn
Learn more about Paul: Paul Nicholson, P.Eng (ON) | LinkedIn
Learn more about Dogus: Dogus Meric | LinkedIn

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