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Travis Air Force Base Fact Sheets

This database holds fact sheets on Travis Air Force Base weapons, organizations, inventory, careers and equipment. Air Force fact sheets contain up to date information and statistics. If a fact sheet is not listed, please contact the 60th Air Mobility Wing Public Affairs office at 60amwpa@us.af.mil

Fact Sheets Graphic

Travis Air Force Base Fact Sheets

This database holds fact sheets on Travis Air Force Base weapons, organizations, inventory, careers and equipment. Air Force fact sheets contain up to date information and statistics. If a fact sheet is not listed, please contact the 60th Air Mobility Wing Public Affairs office at 60amwpa@us.af.mil

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ST027 - TF-33 Test Stand Area



The TF-33 Test Stand Area consists of 35 acres in the Travis AFB flight line that has been used since 1957 for jet engine testing, aircraft testing, and fuel storage.  Total petroleum hydrocarbons (TPH) have been identified in the local soil and groundwater. Hydraulic oil has been observed seeping up through the cracks in the pavement when aircraft are on the test stand.  This test stand is no longer used for jet engine testing.  It now supports the storage and distribution of jet fuel via a fuel hydrant system.  Historically, 14 underground storage tanks (USTs) were used to store jet fuel.  The USTs were removed in 1997 and 1998 and replaced with several above-ground tanks. 

The San Francisco Bay Regional Water Quality Control Board is the lead oversight agency for this petroleum-only contaminated (POCO) site. Investigations conducted at Site ST027 in 2007 and 2008 under the POCOS program have included several evaluations of passive bioremediation. These evaluations indicated that the dissolved TPH plume at Site ST027 was shrinking, TPH concentrations were decreasing, and biodegradation of TPH was occurring.

These investigations also discovered a previously unknown trichloroethene (TCE) plume located in the southwestern part of Site ST027, between the southern edge of the aircraft test pad and Taxiway November. This area of TCE contamination has been designated as Site ST027--Area B and is being addressed under the Travis AFB ERP and CERCLA.  The area of TPH contamination has been designated as Site ST027-Area A.  A 2009 investigation identified the extent of the TCE plume and provided the data to demonstrate that Monitored Natural Attenuation (MNA) may be an appropriate remedy for the dissolved solvents at this site.  The Travis AFB Groundwater Record of Decision selected MNA as the final groundwater remedy.  Groundwater monitoring at Sites ST027A and ST027B is ongoing.

In 2016, Site ST027B became a part of a multi-site technology demonstration (along with Site SD036) that will compare the first order degradation rates of chlorinated volatile organic compounds (CVOCs) in environments receiving (1) EVO-only injections and (2) EVO injections with a bioaugmentation culture.  The results from this technology demonstration will be used to evaluate the use of a bioaugmentation culture as an optimization for enhanced reductive dechlorination groundwater treatment.  The technology demonstration will be performed for the next three years and is expected to end by 2019.

ST027-Area B soil was minimally affected by the TCE release, and a risk assessment concluded that the soil did not require remedial action to protect human health or ecological receptors.