Please use this identifier to cite or link to this item: https://hdl.handle.net/11681/26571
Title: Final soil vapor extraction pilot test report for area of concern 2 for remedial investigation and feasibility study, Cold Regions Research and Engineering Laboratory (CRREL), Hanover, New Hampshire
Authors: United States. Army. Corps of Engineers. New England District
Keywords: Cold Regions Research and Engineering Laboratory (U.S)
Hanover (N.H.)
Soil vapor extraction
United States. Comprehensive Environmental Response, Compensation, and Liability Act of 1980
Issue Date: 1-Mar-2017
Publisher: United States. Army. Corps of Engineers. New England District
Series/Report no.: Comprehensive Environmental Restoration, Compensation, and Liability Act Administrative Record (Cold Regions Research Engineering Laboratory (CRREL)) ; 2017
Abstract: Amec Foster Wheeler conducted a soil vapor extraction (SVE) pilot test at the Cold Regions Research and Engineering Laboratory (CRREL) in Hanover, New Hampshire (Figure 1-1) from October, 2014 through January, 2016. Amec Foster Wheeler has prepared this pilot test report for the United States Army Corps of Engineers, New England District (USACE) under contract number W912WJ-11-D-0005 Task Order 0004. Since March 2010, the USACE has been investigating vapor intrusion (VI) at several buildings at CRREL. This report documents the results of the SVE pilot test; including step testing, constant rate and rebound testing, and vertical profiling. Figure 1-2 shows the location of the facility in relation to abutting properties. Figure 1-3 identifies the location of most of the major structures and key features at CRREL including the location of the Areas of Concern (AOC) 2 and 9. AOC 2 and AOC 9 are currently being investigated under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA). VI samples detected trichloroethene (TCE) and other contaminants in indoor air at several facility buildings. TCE was released at AOC 2 to fine grained soils by a leaking underground storage tank (UST) containing TCE and at AOC 9, by experiments related to a former Ice Well, and an above ground storage tank explosion that released TCE in 1970. TCE adsorbed to these soils has resulted in the development of a highly concentrated soil gas plume underlying the facility. TCE contaminated soil vapors migrated into the Main Laboratory at levels in excess of risk based regulatory criteria. Mitigation of VI impacts is currently ongoing at the Site. TCE has also been detected in off-site soil vapor to the north, east, and south of the CRREL facility at concentrations that exceed screening levels. As a result of the off-site detections of TCE in soil gas, Amec Foster Wheeler was tasked by the USACE to conduct an SVE Pilot test. The test was performed to determine the effectiveness of the technology for the control of soil vapor, mitigation of exposure risks, and key parameters for the design of an SVE remediation system. This report presents data and discusses the results of the pilot test relating to design of a full-scale SVE system to address source area remediation, soil vapor migration onto abutting properties, and mitigation of VI for on-site buildings.
Description: Administrative Record
URI: http://hdl.handle.net/11681/26571
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