Parsons Corporation

Webinar | Firefighting Foam Transition: PFAS Cleanout Challenges and Solutions
2026-01-21 12:30 - 13:30 (America/New_York) | Virtual Event
Join us on January 21, 2026 for a technical webinar regarding Firefighting Foam Transition: PFAS Cleanout Challenges And Solutions.
Background/Objectives
Fluorine-free foams (F3) are replacing per- and polyfluoroalkyl substance (PFAS) containing aqueous film-forming foams (AFFF) for fire suppression to reduce environmental, health, and liability risks related to PFAS. Transitioning to F3 requires effective cleanout solutions to prevent residual PFAS impacts and ensure system compatibility. This presentation aims to address these challenges and showcase sustainable, cost-effective technologies for PFAS remediation.
Approach/Activities
The flocculant technology PerfluorAd™, developed by Cornelson, effectively removes PFAS that accumulate on internal surface areas of fixed and mobile fire suppression systems. Flocs are isolated, generating a low volume of PFAS-impacted solids for minimized waste disposal. Rinsate is treated on-site and typically compliant with sewer discharge requirements, further reducing waste disposal costs. Effectiveness is documented through real-world applications and data from airports and other facilities.
Results/Lessons Learned
Applying flocculant technology can effectively remove PFAS from fire suppression systems, reduce waste generation, and minimize rebound risks. Cleanout projects using this technology have demonstrated cost savings, operational efficiency, and environmental benefits compared to traditional methods. Lessons learned highlight the importance of tailored solutions, ongoing process optimization, and data-driven improvements using advanced analytical techniques to address diverse fire suppression systems.
Presenters
GREG KNIGHT Greg is the PerfluorAd™ Operations Manager for TRS Group, a Parsons company, working exclusively on AFFF cleanouts since 2021. Greg oversees implementation of all TRS Group AFFF cleanouts.
LAUREN TURNER, PhD Lauren is an environmental engineer supporting client projects and research objectives for contaminated sites. Lauren leverages research experiences and PFAS knowledge to advance treatment options.
To Join The Webinar
Join on your computer, mobile app or room device:
Join the meeting now
Meeting ID: 254 973 769 066 59
Passcode: [REDACTED]
Please visit the Parsons YouTube channel where video recordings of our
previous technical webinars are available for viewing.

WEBINAR: PFAS In Stormwater Control Measures: Removal, Distribution, and Long-Term Fate
2026-02-11 12:30 - 13:30
Overview
Join us for our next technical webinar discussing “PFAS in Stormwater Control Measures” on February 11th at 12:30 EST.
Background/Objectives
Per-and polyfluoroalkyl substances (PFAS) in stormwater pose emerging risks to surface waters and sediments, particularly at aqueous film-forming foam (AFFF) impacted sites. Stormwater control measures (SCMs) are widely used to manage stormwater volumes and pollutant loads, yet their PFAS performance is not well understood. This work evaluates PFAS concentrations, distribution, and long‑term behavior across multiple SCMs to clarify their treatment role and inform improved stormwater management.
Approach/Activities
This study monitored 21 storm events at multiple SCMs (including biofilters, media filters, and a retention pond) to evaluate PFAS in inlet and outlet samples, quantify dissolved and particulate phases, and estimate PFAS removal efficiency. In an AFFF‑impacted pond, monthly monitoring and a hydrologic model simulated pond volume and PFAS concentration dynamics over one year to identify key controlling processes.
Results/Lessons Learned
SCMs showed limited PFAS removal, particularly in the dissolved phase, which dominated concentrations. Chain length influenced PFAS association with solids, but particulate removal was inconsistent, resulting in low overall reduction. In the AFFF‑impacted pond, PFAS accumulated over time, with precursor transformation and evaporation driving concentration increases. These results illustrate how long‑residence‑time SCMs can act as long‑term PFAS sinks and even secondary sources.
This webinar has been approved for 1 professional development hour (PDH) credit for New York Professional Geologists and New York/New Jersey Professional Engineers. For other states, please refer to your licensing board guidance for eligibility.
About the Presenter
CÉSAR GÓMEZ-AVILA, PHD
César is an environmental engineer with a PhD in Chemical Engineering, specializing in stormwater management, sediment recontamination, and contaminant fate and transport. He has extensive experience with PFAS, hydrophobic organic compounds (HOCs), microplastics, and trace metals in
environmental systems.
To Join The Meeting
Microsoft Teams Meeting
Join on your computer, mobile app or room device: Click here to join the meeting.
Phone Conference ID: 234 254 983 072 44
Passcode: [REDACTED]
Please visit the Parsons YouTube channel where video recordings of our previous
technical webinars are available for viewing.
