HOW DO YOU KNOW YOUR IN SITU REMEDIATION IS WORKING?

Compound-Specific Isotope Analysis (CSIA)

Concentration data alone often doesn’t tell the full story. That’s where Compound-Specific Isotope Analysis (CSIA) comes in.

CSIA is a powerful forensic and performance monitoring tool that provides quantitative evidence of contaminant degradation—clearly distinguishing between dilution and true mass destruction. By tracking changes in isotope ratios (such as ¹³C/¹²C or ²H/¹H), CSIA reveals whether biotic or abiotic processes are breaking down volatile organic compounds (VOCs) and can even help identify contaminant sources.

At Tersus Environmental, we help practitioners incorporate CSIA into site strategies to:

• Demonstrate the success of remediation,

• Support monitored natural attenuation (MNA),

• Or differentiate contaminant origins.

We also offer passive samplers that pair mass flux measurements with CSIA for even deeper insight into plume behavior and source contributions.

For every zone of your plume—we’ve got you covered.

Ready to enhance your remediation strategy with CSIA?
Let’s talk: tersusenv.com/support