Brent Pautler, Ph.D., (ON) will present “Performance Monitoring to Assess Remediation Effectiveness” in the upcoming Thought Leader Webinar Series Hosted by Tersus Environmental 1 PM EDT on Thursday March 18th, 2021.

Brent’s co-presenters are David Alden, P.E. and Daniel Bouchard, Ph.D. (Terus Environmental).

Brent, the Chemistry Services Manager at SiREM received his Ph.D. environmental analytical chemistry in 2013 where he gained advanced technical experience in spectroscopy, chromatography, mass spectrometry, passive sampling, and chemistry informatics. Throughout his career, he has worked with scientists, engineers, and consultants, applying his chemistry and information technology expertise to help them solve unique problems in the laboratory and the field. He is role includes managing and advancing SiREM’s passive sampling portfolio and analytical testing services.

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 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.


This webinar will provide an overview of compound-specific isotope analysis (CSIA) and other specialty analytical testing services to monitor and assess remediation effectiveness. CSIA refers to the measurement of the isotope ratios (e.g., 13C/12C, 2H/1H, or 37Cl/35Cl) of individual volatile and semi-volatile compounds extracted from environmental samples. This characterization tool can be used for demonstrating in situ destruction of selected VOC and for forensic investigations to gain information about potential contaminant sources, the extent of degradation, comingling of contaminant plumes, and the origins of some chemicals.

This powerful tool can reveal information that cannot be gained by from evaluation of concentration data. CSIA provides a quantitative means to differentiate reaction pathways for abiotic and biotic degradation. It can provide information to help identify biodegradation pathways and serve as a basis for identification of distinct pollutant sources. CSIA can provide evidence for monitored natural attenuation of sites contaminated with a wide variety of pollutants.

Several other specialty analytical testing services are available for monitoring bioremediation performance and progress at your site. The advantages and benefits of measuring for dissolved hydrocarbon gases (DHGs), volatile fatty acids (VFAs), anions, and both targeted and non-targeted microbial analyses will be discussed for both baseline and post-injection monitoring.

More Information

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