WEBINAR: PFAS In Stormwater Control Measures: Removal, Distribution, and Long-Term Fate
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: q4fB2pY9
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