Downloads & Free Reading Options - Results

This confirmation sampling and analysis plan (SAP) has been prepared by Parsons Engineering Science, Inc. (Parsons ES), FORMERLY Engineering-Science, Inc. (ES), for submittal to the US Air Force Center for Environmental Excellence (AFCEE), Brooks Air Force Base (AFB), Texas, and 55 Civil Engineering Squadron/Environmental Division (CES/CEVR), Offutt AFB, Nebraska. The SAP is intended to guide confirmation soil sampling at Building 406 at Offutt AFB, Nebraska. Building 406 is the location of a release of jet propulsion grade 4 (JP-4) jet fuel from a former underground storage tank (UST) system. Since 1992, Offutt AFB has participated in two AFCEE-sponsored bioventing projects; currently, the Extended Bioventing Project, and formerly, the Bioventing Pilot Test Initiative. The Bioventing Pilot Test Initiative included conducting more than 135 in situ bioventing pilot tests at 48 Air Force installations nationwide. These tests were designed to collect data on the effectiveness of bioventing for the remediation of soil contaminated with fuel hydrocarbons (e.g., W-4 jet fuel, diesel fuel, gasoline, or heating oil). As part of this project, bioventing pilot tests were conducted at the Low-Point Drain site (Building 528), Building 30, the Petroleum, Oils, and Lubricants site, and Building 406 at Offutt AFB. The purpose of the pilot test at Building 406 was to evaluate the effectiveness of bioventing in remediating unsaturated soils contaminated with petroleum hydrocarbons that resulted from JP-4 released from the former USTs. The underground storage tanks (USTs) were removed in October 1993 (Terracon Environmental, Inc., 1993). Based on the results of the extended bioventing test, in situ bioventing appears to have reduced petroleum hydrocarbon contamination in site soils sufficiently to meet Nebraska Department of Environmental Quality (NDEQ) requirements for closure of the site.