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Under contract to AFCEE, Parsons ES collected cost and performance data to demonstrate the effectiveness of SVE technology using a modified ICE to extract and destroy fuel hydrocarbons at four Air Force sites. This CTR is intended to summarize the results of the demonstrations by presenting: Analytical data collected during the demonstrations; ICE cost and performance data collected during the demonstrations; An analysis of the ICE vapor treatment efficiency and cost comparison to other technologies; An assessment of the applicability of this technology based on vapor treatment efficiency and cost; and ;An overview of lessons learned and recommendations resulting from this demonstration., The original document contains color images. All DTIC reproductions will be in black and white.

Under contract to AFCEE, Parsons ES collected cost and performance data to determine the applicability of using flameless thermal oxidation (FTO) technology for treatment of extracted soil vapors containing chlorinated and non-chlorinated volatile organic compounds (VOCs) at three Air Force sites.

The Air Force Center for Environmental Excellence (AFCEE) has sponsored an ongoing program to promote the use of cost-effective soil vapor treatment technologies in conjunction with soil vapor extraction (SVE) for remediation of fuel- and solvent-impacted sites. On September 20, 1995, Parsons Engineering Science, Inc. (Parsons ES) received formal notice to proceed from HSD/PKVDA at Brooks Air Force Base (AFB) under Contract F41624-94-D-8136, Delivery Order 28, to implement a statement of work (SOW) that outlines requirements to provide services to support environmental air conformity through evaluation of the flameless thermal oxidation (FTO) vapor-phase treatment technology for SVE off-gas abatement at various Air Force base sites worldwide. Thermatrix, Inc. (Thermatrix) of Knoxville, Tennessee is an AFCEE directed subcontractor providing the FTO treatment system to be evaluated during the demonstrations. Thermatrix was selected in the Broad Agency Announcement (BAA) for Technology Demonstration for technology evaluation and cost performance of their GS Series FTO system. A technology demonstration was designed by Parsons ES to determine the applicability of using FTO technology for treatment of extracted soil vapors containing chlorinated and non-chlorinated volatile organic compounds (VOCs). Three Air Force installations were identified for demonstrating the FTO system, including Building 181 at AFP 4, Fort Worth, Texas, which is the subject of this report.

The Air Force Center for Environmental Excellence (AFCEE) has sponsored an ongoing program to promote the use of cost-effective soil vapor treatment technologies in conjunction with soil vapor extraction (SVE) for remediation of fuel- and solvent-impacted sites. On September 20, 1995, Parsons Engineering Science, Inc. (Parsons ES) received formal notice to proceed from HSD/PKVDA at Brooks Air Force Base (AFB) under Contract F41624-94- D-8136, Delivery Order 28, to implement a statement of work (SOW) that outlines requirements to provide services to support environmental air conformity through evaluation of the flameless thermal oxidation (FTO) vapor-phase treatment technology for SVE off-gas abatement at various Air Force base sites worldwide. Thermatrix, Inc. (Thermatrix) of Knoxville, Tennessee is an AFCEE-directed subcontractor providing the FTO treatment system to be evaluated during the demonstrations. Thermatrix was selected through the Broad Agency Announcement (BAA) that included demonstrations for evaluation of cost and performance of their GS Series FTO system. A technology demonstration was designed by Parsons ES to determine the applicability of using FTO technology for treatment of extracted soil vapors containing chlorinated and non-chlorinated volatile organic compounds (VOCs). Three Air Force installations were identified for FTO system demonstrations, including the Source Area Reduction System (SARS) at the former Lowry AFB, Colorado. The results of the FTO system demonstration at the SARS are summarized in this report.

The SVE and vapor-phase treatment demonstration was performed at Plattsburgh AFB, New York, Site FT-002, from August 27, 1996 through March 25, 1997. The technology demonstration was conducted over a 30-week period, and soil vapors were extracted from 14 site wells. The FTO system was tested using individual wells, or pairs of wells for a period of up to 2 weeks per well (or well pair) to determine the optimum vacuum/extraction flow rate balance among all wells and soil vapor concentrations from each of the wells. The 30-week demonstration served two primary purposes: 1) evaluation of the FTO technology, and 2) collection of test data to support the design and operation of a full-scale SVE system that was installed at Site FT-002 by OHM Remediation Services, Inc. (OHM) in 1996. The FTO technology demonstration was performed in accordance with the Final Work Plan for the Evaluation of Flameless Thermal Oxidation at Plattsburgh Air Force Base (the work plan) (Parsons ES, 1996a), and the Addendum to the FTO work plan (Parsons ES, 1996c). The purpose of the site-specific technical report is to evaluate the effectiveness of the FTO system during the Site FT-002 field demonstration and to summarize FTO system performance, operational costs and reliability, and evaluate full-scale treatment system application for the site FT-002.

During early February of 1990, a ruptured pipe at a Burlington Northern Railroad (BNRR) fueling pumphouse in Alliance, Nebraska resulted in over 60,000 gallons of No. 2 diesel fuel spilling onto the surrounding soil. Several months later, a subsurface investigation indicated that soils were contaminated to a depth of over 65 feet below ground surface (bgs) and were in a position to impact groundwater, which was observed approximately 70 feet bgs. State regulatory agencies requested that BNRR develop and implement a remedial action plan to treat these diesel-contaminated soils and protect local groundwater. Parsons Engineering Science, Inc. (Parsons ES) was retained for this work and, after evaluating a variety of remediation technologies, recommended using soil bioventing methods to begin the removal of volatile benzene, toluene, ethylbenzene, and xylenes (BTEX) compounds and the long-term biodegradation of all fuel residuals. Parsons ES first designed and implemented a bioventing pilot test to determine soil properties such as air permeability, and to assess the potential for both volatilization and long-term biodegradation of diesel fuel residuals at the site. Pilot test results confirmed that bioventing was feasible for the remediation of this site, and a full-scale bioventing system was installed on the site in September 1991. This system has operated continuously for over 4 years. BNRR personnel have been responsible for weekly system checks, and Parsons ES has been responsible for semi-annual respiration testing and for soil sampling to determine the level of cleanup achieved during the first 4 years of in situ bioventing. This document summarizes the work completed to date and the 4-year findings of this innovative technology demonstration., Presented at Workshop on Tri-Service Environmental Technology held in Hershey, PA on 20-22 May 1996. Pub. in Proceedings of the Tri-Service Environmental Technology Workshop, p205-217, May, 1996. This article is from ADA429790 Proceedings of the Tri-Service Environmental Technology Workshop, "Enhancing Readiness Through Environmental Quality Technology" Held in Hershey, PA on 20-22 May 1996

A technology demonstration was designed by Parsons Engineering Science, Inc. (Parsons ES) to determine the applicability of using flameless thermal oxidation (FTO) to treat extracted chlorinated volatile organic compound (VOC) soil vapors, primarily trichloroethene (TCE). The soil vapor extraction (SVE) and treatment demonstration was to be performed at Building 181, Air Force Plant 4 (AFP 4), in Fort Worth, Texas. Building 181 was previously investigated by other contractors to characterize the effects of subsurface solvent releases that were detected in 1991. This FTO treatment technology demonstration was attempted at Site 181 from 16 March through 30 April, 1996, as part of an ongoing innovative technologies evaluation program sponsored by the US Air Force Center for Environmental Excellence (AFCEE) in order to promote cost-effective vapor treatment technologies at fuel- and solvent-contaminated sites. The technology demonstration was to have been performed in accordance with the Final Work Plan for the Evaluation of Flameless Thermal Oxidation at Air Force Plant 4 (AFP 4), Fort Worth, Texas (Parsons ES, 1996), as approved by the Air Force and regulatory agencies.