Client: USACE Omaha
Location: Lincoln, NE
Completion Year: 2020
Scope of Work:
- Remedial action
- Groundwater monitoring
Brice performed initial groundwater monitoring and is conducting periodic product recovery to achieve site closure at the Former Lincoln Air Force Base FUDS in Lincoln, Nebraska. Free product remains in groundwater due to a release of JP-4 from a former 500-gallon underground storage tank (UST) used for containment of overflow of JP-4 from fuel filter meter pit #10 (the tank had been removed in 1991).
To execute the work, we took product thickness measurements, and conducted an initial round of groundwater sampling at each well without free product to determine current conditions prior to beginning the remedial action (free product recovery). We then performed free product recovery using vacuum extraction on a monthly basis.
We will begin one year of quarterly groundwater level and product thickness monitoring and reporting to ensure product removal without rebound once free product does not recharge. We are providing periodic technical memorandums after each product recovery event and will provide a technical memorandum documenting each quarterly groundwater monitoring and product thickness monitoring event once those begin.
After completing monitoring and reporting, we will abandon existing groundwater monitoring wells once concurrence from Nebraska Department of Environmental Quality (NDEQ) and USACE has been obtained. Brice will evaluate, interpret and integrate the results into a final report to NDEQ to achieve no further action status for this release.