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DTSTART;TZID=America/New_York:20260211T123000
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SUMMARY:WEBINAR: PFAS In Stormwater Control Measures: Removal\, Distribution\, and Long-Term Fate
DESCRIPTION:Overview\nJoin us for our next technical webinar discussing “PFAS in Stormwater Control Measures” on February 11th at 12:30 EST. \nBackground/Objectives\nPer-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. \nApproach/Activities\nThis 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. \nResults/Lessons Learned\nSCMs 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. \nThis 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. \nAbout the Presenter\nCÉSAR GÓMEZ-AVILA\, PHD\nCésar 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\nenvironmental systems. \nTo Join The Meeting\nMicrosoft Teams Meeting\nJoin on your computer\, mobile app or room device: Click here to join the meeting.\nPhone Conference ID: 234 254 983 072 44\nPasscode: q4fB2pY9\nPlease visit the Parsons YouTube channel where video recordings of our previous\ntechnical webinars are available for viewing.
URL:https://www.parsons.com/event/webinar-pfas-in-stormwater-control-measures-removal-distribution-and-long-term-fate/
CATEGORIES:Environmental,PFAS,Water and Wastewater
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DTSTART;TZID=America/New_York:20260708T123000
DTEND;TZID=America/New_York:20260708T133000
DTSTAMP:20260728T083017
CREATED:20260629T161945Z
LAST-MODIFIED:20260629T161945Z
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SUMMARY:Webinar | Development And Validation Of PFAS Analytical Methods For Characterization Of Complex Matrices
DESCRIPTION:Join us on July 8th\, 2026 for a technical webinar regarding Development And Validation Of PFAS Analytical Methods For Characterization Of Complex Matrices. \nBackground/Objectives\nPer- and polyfluoroalkyl substances (PFAS) occur in a wide range of environmental and industrial matrices\, but conventional analytical methods can be difficult to apply to complex samples\, particularly at low concentrations and in the presence of significant matrix interferences. This presentation reviews the technical challenges associated with PFAS characterization and examines the need for complementary methods that expand beyond targeted mass spectrometric analysis and reduce analytical turnaround time. \nApproach/Activities\nThis presentation summarizes several in-house analytical methods developed to support rapid PFAS screening\, including the colorimetric active surfactant (CAS) assay\, the ultraviolet-reducible organic fluorine (UV-ROF) assay\, and a UV-activated total oxidizable precursors (TOP) assay. Topics include method development\, validation against commercial methods such as Environmental Protection Agency Method 1633 and adsorbable organic fluoride (AOF) analysis\, and sample preparation strategies to address matrix complexity and concentration-dependent analytical limitations. \nResults/Lessons Learned\nThe results show that indirect screening methods can provide useful PFAS characterization across complex matrices when supported by appropriate pre-processing and quality assurance measures. Key lessons include the importance of managing matrix interferences\, matching sample concentration to the method’s linear range through dilution or pre-concentration\, and using rapid in-house screening to prioritize samples for external laboratory analysis. These methods can support faster\, lower-cost decision-making while expanding data coverage for PFAS investigations. \nPresenters\nDAVID PATCH\, PhD David is an analytical chemist with experience in both academic and industrial professional environments. He has six years of experience in environmental research and development\, specializing in the analysis of legacy and emerging contaminants. \nNATALIA O’CONNOR Natalia is a research and development scientist with experience in PFAS\nremediation. She has six years of experience in environmental research and development\, focusing on the characterization and destruction of organic pollutants\, including PFAS. \nTo Join The Webinar\nJoin on your computer\, mobile app or room device: \nClick here to join the meeting.\nPhone Conference ID: 284 815 940 467 73 \nPasscode: yC7De9qa \nPlease visit the Parsons YouTube channel where video recordings of our previous\ntechnical webinars are available for viewing.
URL:https://www.parsons.com/event/webinar-development-and-validation-of-pfas-analytical-methods-for-characterization-of-complex-matrices/
LOCATION:Online
CATEGORIES:PFAS
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