Jeff Roberts (Ontario) will present “How to Integrate Bench Scale Tests, Molecular Diagnostic Tools (MDT), and Compound-Specific Isotope Analysis (CSIA) to your Field Pilot Test” during the Thought Leader Webinar Series at 12 PM EDT on Dec. 7, 2022.

Jeff’s co-presenters are Tyson Fulmer, P.G., Catalyst Environmental Solutions.

Jeff is the Operations Manager at SiREM with extensive technical experience in the laboratory assessment and field implementation of soil, sediment and groundwater remediation technologies at sites containing contaminants including chlorinated solvents, petroleum hydrocarbons, emerging contaminants and other recalcitrant compounds. Over the past 18 years he has conducted and managed hundreds of bench-scale batch and column treatability studies and has technical experience in the growth, scale up and field implementation of several anaerobic microbial cultures for bioremediation remedies. Jeff has several years of passive sampling experience and was a lead member in the development of the SP3™ sampler.

TheThought Leaders Webinar Series highlights the latest ideas for in situ remediation from our industry’s leading thinkers. These webinars will connect you directly with these leaders so you can learn new techniques and strategies to boost your knowledge, benefit your bottom line, and serve your clients better. All webinars are taught by people who really know in situ remediation and are eager to share their knowledge with you. These events are  to give back and help members of the groundwater remediation community earn PDHs that may not have an opportunity to attend a conference. The views and opinions expressed in the webinars are those of the presenter. They do not necessarily reflect the views and opinions of, Tersus Environmental, LLC, or Tersus Environmental Limited.

Tersus Environmental was founded in 2011 to provide technology-based solutions combined with unparalleled technical support to increase remediation effectiveness and decrease remediation costs. Their focus is the remediation of soil and groundwater impacted with:

  • NAPLs
  • Chlorinated Solvents
  • Petroleum Hydrocarbons
  • Per- and Polyfluoroalkyl Substances (PFASs)
  • Pesticides
  • Metals

They partner with our clients to mitigate risks and deliver technology-based solutions to manage complex, challenging environmental liabilities.  Their business model is to support the environmental consulting community with experience and resources to implement projects utilizing innovative and emerging technologies.  They look forward to helping you develop the optimally cost-effective, remediation approach.


When opting for an in-situ remediation site management strategy, proper establishment of the intended contaminant mass removal process requires specific attention to optimize resources and reduce remediation time. To address this challenge, this project used bench scale testing first as a proof of concept. A subsequent field pilot test incorporation genetic testing and CSIA on groundwater samples allowed verifying the effectiveness of the engineered approach to address VOCs and ultimately to collect optimization parameters to design a full-scale injection and be capable of effective troubleshooting during the remediation process.

Bench scale tests allowed verifying the effect of amendment dosing on pH, effectively calculating the site’s buffering capacity and the required chemical dose to adjust conditions for reductive dechlorination.

Monitoring the abundance of key functional genes associated with complete reductive dechlorination of Chlorinated Ethenes can confirm the effectiveness of biostimulation and bioaugmentation.

Compound-specific isotope analysis (CSIA) was used to help characterize the fate of the VOCs during the remediation. By tracking the change of the VOC isotopic composition caused by either biotic or abiotic processes, VOC mass destruction process initiated by the remediation treatment can be distinguished from co-occurring diluting process. Since the fate of VOC and the treatment cost-effectiveness are closely related to a successful field implementation of the selected remedial technology, such information obtained via CSIA was valuable. Furthermore, when CSIA application is designed to site-specific conditions, additional information than proof of VOC destruction can be obtained.

 More Information

Register for the webinar: here
About Remediation Seminars:
About Tersus:
For consultation regarding Bench Scale Testing and in situ remediation, contact Jeff at
Learn more about Jeff: