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AEG Event 2/19/26: Mitigating VOCS

When
19 Feb 2026
6:00 PM - 10:00 PM
Location
60 Cottontail Lane, Somerset, NJ 08873

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AEG NY-P DINNER MEETING ANNOUNCEMENT
Mitigating Migration and Discharge of Volatile Organic Compounds (VOCs) to Surface Water Bodies Using Regenerative Permeable Reactive Barriers (PRB) By Derek Pizarro, CPG AST Environmental, Inc. February 19, 2026 At the Clarion Hotel in Somerset, New Jersey



ABSTRACT
At active terminal sites, petroleum sheens are often seen on nearby waterways due to Light non-aqueous phase liquid (LNAPL) seeping through soil and under seawalls. Although many sites use recovery sumps to remove much of the LNAPL, sheening can persist because of groundwater changes, infiltration, or low tides. Seep locations may not match mapped LNAPL areas because of historic fill, geology, or bulkhead conditions.

Similarly, at UST spill sites, containment may still affect surface waters after emergency cleanup. These locations face access challenges, including commercial, residential, and forested areas with utilities. Their surface water bodies tend to be smaller—such as lakes, streams, ponds, wetlands, and seasonal features like seeps and diurnal streams.

Plume bisection for volatile organic compounds (VOCs) with a permeable reactive barrier (PRB) is more complex than simply placing it across groundwater flow or near recovery systems. A PRB installed by direct push technology (DPT) using a bioremediation platform with activated carbon offers flexible design, easy installation, and can be adapted as site conditions change or remediation activities shift.

A slurry of microbes, activated carbon, electron acceptors, kinetic additives, and nutrients is injected via DPT. The PRBs break down VOCs through microbiological processes within the activated carbon, ensuring rapid and ongoing treatment by combining adsorption and biological regeneration. This approach effectively reduces LNAPL, lowers dissolved phase concentrations, and controls discharge into water bodies.

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AEG Event 2/19/26: Mitigating VOCS

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