Accession Number : ADA385656


Title :   Completion of One-Year Bioventing Test, Vandenberg AFB BX Service Station and Facility 6454


Corporate Author : AIR FORCE CENTER FOR ENVIRONMENTAL EXCELLENCE BROOKS AFB TX


Full Text : http://www.dtic.mil/get-tr-doc/pdf?AD=ADA385656


Report Date : 26 SEP 1995


Pagination or Media Count : 11


Abstract : The Air Force Center for Environmental Excellence (AECEE) one-year bioventing test and evaluation projects at the BX Service Station and Facility 6454 have been completed. For each site, Figure 1 provides general site information and Table 1 provides a summary of initial, six-month, and one-year fuel biodegradation rates measured at several monitoring points. Table 2 provides a summary of initial and final soil and soil gas sampling results for total recoverable petroleum hydrocarbons (TRPH) and BTEX. Based on results from your two sites and 123 other sites currently under operation, bioventing is cost-effectively remediating fuel contamination in a reasonable time-frame. We recommend its application throughout the Air Force and at other sites on your installation using the criteria in the AFCEE Test Plan and Technical Protocol for a Field Treatability Test for Bioventing, May 1992, including Addendum One, February, 1994. These are found in the "Tool Box" recently sent to your base. The objective of the one-year sampling effort was not to collect the large number of samples required for statistical significance, but to show relative changes in TRPH and BTEX concentrations. Soil gas sampling results at the BX Service Station indicate more than three orders of magnitude reduction in TVH and BTEX at BXS-MW-7. Soil gas sampling at the other two locations was not possible due to high groundwater levels. Soil concentrations of TRPH and BTEX decreased by an order of magnitude at all monitoring points. Gasoline range total petroleum hydrocarbons were nondetect after one year of treatment. For additional soil sampling information, consult the U.S. Bureau of Reclamation who collected samples before system start-up at the BX Service Station and after 1 year of treatment. This data indicates up to 4 orders of magnitude decrease in TPH concentrations.


Descriptors :   *GROUND WATER , *WATER POLLUTION , *SOIL REMEDIATION , BENZENE , XYLENES , CALIFORNIA , AIR FORCE FACILITIES , STORAGE TANKS , SITE INVESTIGATIONS , BIODEGRADATION , FUEL CONTAMINATION , PETROLEUM PRODUCTS , TOLUENES.


Subject Categories : SOLID WASTES POLLUTION AND CONTROL
      WATER POLLUTION AND CONTROL


Distribution Statement : APPROVED FOR PUBLIC RELEASE