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QuantArray®-Petro: Effectiveness of Oxygen Addition at a Former Gas Station

• Groundwater at a former gasoline service station was impacted by leaking underground storage tanks and associated piping. Although contaminant trends and geochemistry suggested that MNA could be an appropriate site management strategy, the need for more rapid site closure led to a decision to enhance biodegradation of BTEX and MTBE aerobically with injection of an oxygen releasing compound.

Microbial-Insights-Featured-Image-QuantArray-Petro_1

QuantArray®-Petro: MNA Assessment at a Crude Oil Impacted Site

At a crude oil impacted site, project managers were considering MNA as a site management strategy based on favorable contaminant concentration trends and geochemistry in groundwater. However, additional lines of evidence were required.

Together with contaminant concentration trends and geochemistry, the direct microbial data provided multiple lines of evidence to support a confidant MNA decision resulting in significant cost savings over enhanced remediation.

Featured Image for Census qPCR Actionable Data for Evaluating MNA Case Study

CENSUS® qPCR: Actionable Data for Evaluating MNA

• A petroleum pipeline release in a remote area had gone undiscovered for a number of years and groundwater was impacted with BTEX. Groundwater monitoring results suggested that BTEX concentrations were decreasing although results were variable.

• Trends in decreasing BTEX concentrations were validated as biological in origin supporting an MNA management strategy and avoiding the greater costs of enhanced remediation.