AFS/Airport - ST010 SE Runway Fuel Spill
Diesel, Petroleum Product
Past Work on Site
The spill resulted from the rupture of a four-inch fuel line in the winter of 1984, releasing an unknown volume of diesel. The fuel line ran underground from the barge unloading area to the South POL Tank Farm. Fuel reportedly collected in an east-west trending ditch south of the runway. Additional potential sources of contamination may include a nearby JP-4 fuel line, a barrel dump, and a tar pit. IRP site ST010. See also Reckey 198831X127201. Exposure pathways identified as groundwater and soil; the site is directly upgradient of Old Town Galena water wells. Potential receptors identified as humans drinking water from private wells. The site is assigned a HIGH overall risk on the Air Force Relative Risk Evaluation Worksheet dated 8/29/95. A generator-powered bioventing system was run at the site for approximately nine months in 1996, but the effectiveness of this remedial system was not evaluated. --Updated 2011-- April 2010 In April 2010 a Work Plan for Site Inspection, Remedial Investigation, and Site Characterization Former Galena Forward Operating Location, Alaska was developed. SE Runways Fuel Spill was identified as a candidate for the site characterization pathway. The goal of the site characterization pathway is to characterize the nature and extent of contamination both laterally and vertically. Target analytes at this site are: DRO, GRO, RRO, VOCs, PAHs, and metals. This site was also analyzed for possible analytes based on a 500ft radius from the site boundary. Based on the site use, the target analyte list for this site was not adjusted. Initial sampling at this site is expected to be completed during the 2010 field season. August 2010 Results from the Fourth Triad meeting: Data from the on-site lab was available at for this site. Analytes that that the on-site lab can analyze for include: GRO, DRO, RRO, and BTEX. The on-site lab can also perform PCE and TCE screenings. The other target analytes for this site are sent to an off-site lab and the results were not available for discussion. This site will be re-visited once all data is available. On site lab results: ST010_GP003 showed 2,080mg/kg DRO 0 ftbgs, 2,020 mg/kg DRO 5 ft bgs, and 454 mg/kg GRO 0 ft bgs; ST010_GP006 showed 15,100 mg/kg DRO 5 ft bgs, 34, 800 DRO at 10 ft bgs, and 5,770 mg/kg DRO at 14 ft bgs, and 1,090J GRO at 10 ft bgs, 1,220J mg.kg GRO 10 ft bgs, 168J mg/kg GRO at 14 ft bgs. Data from 2010 field sampling indicate that the nature and extent of contamination in the western portion of ST010 has been delineated. It also indicates that a significant DRO source remains in the soil. Sediment sampling indicates that sediment in drainage swale has not been impacted by the petroleum spill, and no further sediment sampling is recommended. Additional stepouts were approved to bound around the historical exceedances. This sampling is expected to occur during the 2011 field season.