Case Study: In Situ PFAS Remediation
Dane County Airport Study
Completed at Dane County Airport/ Truax Field as a joint venture between Fixed Earth and ORIN Technologies, a USA- based technology and field services company with 30+ years of experience and key partner in our PFAS technologies.
Two field studies in 2021/2022:
Treatment of highly impacted water ex situ
Refinement of in situ bioremediation methods
Testing of BAM product line to enhance microbe performance.
Prior to field studies, site-specific microbes were acquired and
tested in lab conditions.
Testing of alternative methods to create aerobic conditions.
Both studies resulted in significant reductions of PFAS.
Case Study: Truck Flush Water
Rinse water from flushing fire fighting trucks containing PFAS AFFF.
Four plastic totes were treated.
Total PFAS concentrations ranged from 7 to 33 ppm.
Field pilot commenced in summer 2021 and was monitored for 35 weeks.
Totes Total PFAS Summary Data
Pilot Scale In-Situ Treatment
Small treatment area located adjacent to firefighting building where PFAS was known to occur in groundwater.
Study commenced in late November 2021.
Four monitoring wells were installed in treatment area to measure performance.
Geoprobes were used to inject a mixture of BAM, site-specific microbes, and calcium peroxide over a 20 foot interval.
17 Injection points over a 1,600 square foot area with a 25 foot total depth.
PFAS data has been monitored 1 year with rebound study in progress.
Groundwater parameters (DO, pH, EC, temperature, etc.) are monitored weekly.
Groundwater flows to the southeast.
Aerobic conditions maintained through deployment of electrooxidation system by Signum Environmental (Calgary, AB).
