– 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.
– Site managers asked: “Is there direct microbial evidence to support BTEX and naphthalene biodegradation at the site?” The answer was yes. Using the multiple qPCR platform, QuantArray®-Petro, it was shown conclusively that biodegradation of BTEX, naphthalenes, and alkanes were ongoing in the groundwater by both aerobic and anaerobic mechanisms.
– 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.
