Accession Number : ADA286953


Title :   Final Treatability Study in Support of Remediation by Natural Attenuation Site FT-1 at Fairchild Air Force Base, Spokane, Washington


Descriptive Note : Final rept


Corporate Author : PARSONS ENGINEERING SCIENCE INC DENVER CO


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a286953.pdf


Report Date : Oct 1997


Pagination or Media Count : 324


Abstract : This report presents the results of a treatability study performed by Parsons Engineering Science, Inc. (Parsons ES) at the FT-1 Site, Fairchild Air Force Base, Washington to evaluate remediation by natural attenuation (RNA) of dissolved fuel-hydrocarbons and chlorinated solvents in the shallow groundwater. RNA will supplement the engineered remedial actions prescribed in the Record of Decision (ROD). Residual nonaqueous-phase liquid (NAPL) present within the vadose zone and phreatic soils serves as a continuing source for the dissolved groundwater contamination. There is no evidence of mobile NAPL at this site. This study focused on the fate and transport of dissolved benzene, toluene, ethylbenzene, and xylene (BTEX) in the shallow groundwater system at the site. Dissolved chlorinated aliphatic hydrocarbons (CAHs) also are present in the shallow groundwater; therefore, the potential for RNA of these compounds was investigated as well. Site history and the results of soil and groundwater investigations conducted previously are also summarized in this report. Comparison of BTEX, CAH, electron acceptor, and biodegradation byproduct isopleth maps for Site FT-1 provides strong


Descriptors :   *CHEMICAL CONTAMINATION , *MONITORING , *SHALLOW WATER , *WATER TREATMENT , *SOIL POLLUTION , *SOIL REMEDIATION , *GROUND WATER , WATER POLLUTION , BIODEGRADATION , DISSOLVING


Subject Categories : Physical Chemistry
      Soil Mechanics
      Water Pollution and Control


Distribution Statement : APPROVED FOR PUBLIC RELEASE