In February 2009, a petroleum leak was discovered along a pipeline that provides jet fuel to Travis AFB. Officials identified the source of the leak, shut down the pipeline temporarily, and began fuel recovery operations. The first fact sheet
describes the initial response in more detail.
In March 2010, Travis AFB began collecting and analyzing soil and groundwater samples to determine the nature and extent of the petroleum contamination. This site investigation showed more data is needed to identify the most appropriate cleanup technologies. The second fact sheet
describes the site investigation in more detail, and the third fact sheet
discusses the remedy selection process.
In October 2010, Travis AFB conducted an excavation of the fuel-contaminated soil along the pipeline. Once complete, the excavation void was10 feet wide by 60 feet long by 12 feet deep. All contaminated soil was transported by truck to an appropriate landfill, and the void was backfilled with clean soil. The objective of this excavation project was to remove as much of the petroleum contamination as possible.
In 2013, a Dual-Phase Extraction (DPE) system was installed to extract as much fuel from the subsurface as possible. After a few months, it had removed over 3500 pounds of petroleum in the form of vapors and 350 pounds of petroleum liquid. The DPE system was shut down to verify that most of the liquid had been removed. In 2014, the DPE system was run one last time to extract any residual liquid, followed by the introduction of a chemical oxidant. The oxidant stimulates the growth of naturally-occurring microbes that break down the remaining fuel into harmless compounds. The fourth fact sheet
describes these technologies in more detail.
By January 2016, it appeared that the oxidant had broken down the residual fuel. However, the Solano County Department of Resource Management, which oversees this cleanup project, requested additional data to verify that the cleanup is complete. The Air Force agreed to install two additional monitoring wells and analyze water samples from each well for four quarters (a total of one year).
In addition, multiple soil samples from different depths will be collected and analyzed for fuel constituents. After this data is collected and Solano County is satisfied with the results, the Air Force plans to remove all wells and return all impacted property to its original condition by the middle of 2017. The fifth fact sheet
describes the final cleanup efforts in more detail.
For more information, please contact Ms. Merrie Schilter-Lowe., 60th Air Mobility Wing Public Affairs Office at (707) 424-0135; or Mr. Josuwa Bernardo, Solano County Department of Resource Management at (707) 784-6765.