Please use this identifier to cite or link to this item: https://hdl.handle.net/11681/26705
Title: Final Frances C. Richmond Middle School Indoor Air and Sub-Slab Monitoring Results, August 13, 2015 Sampling Event for Off-Site Vapor Intrusion Investigation, Cold Regions Research 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)
Soil vapor extraction
United States. Comprehensive Environmental Response, Compensation, and Liability Act of 1980
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)) ; September 2015
Abstract: Under contract with the US Army Corps of Engineers, New England District (USACE-NAE), AMECEnvironment & Infrastructure, Inc. (AMEC) conducted a ninth round of indoor air and sub-slab vapor sampling at the Frances C. Richmond Middle School (RMS) at 63 Lyme Road, Hanover, New Hampshire on August 13, 2015. AMEC has prepared this data report for the USACE-NAE under contract number W912WJ-11-D-0005 Task Order 0004. Sampling was performed at 15 locations for indoor air samples, 10 locations for sub-slab samples, and 4 outdoor ambient air locations. During the August 2015 sampling event, indoor air samples were collected over a continuous eight hour interval using calibrated flow controllers and one liter BottlevacTM glass containers. Sub slab vapor samples were collected as grab samples using one liter BottlevacTM glass containers. BottlevacTM samples were transferred to one liter Tedlar® bags for analysis using the Inficon Hapsite ER portable gas chromatograph with mass selective detector (GC/MS). Since March 2010, the USACE-NAE has been investigating vapor intrusion (VI) at several buildings at the Cold Regions Research and Engineering Laboratory (CRREL or Site) at 72 Lyme Road in Hanover, New Hampshire (Figure 1-1). Vapor intrusion (VI) samples had detectable concentrations of TCE and other contaminants in indoor air at several CRREL facility buildings. As part of characterization of indoor air migration pathways, soil vapor investigations on the CRREL property were initiated in May 2012. Elevated concentrations of TCE were detected in deep soil gas at the CRREL site boundary (AMEC, 2013). Based on these findings, further characterization of indoor air in buildings adjacent to CRREL was needed. In March 2013, USACE-NAE representatives met with administrative officials of School Administrative Unit (SAU) 70 to inform them of the presence of deep soil vapor contamination at the CRREL facility boundary. Both parties agreed that sampling of indoor air and sub-slab soil vapor was warranted at the RMS to determine if TCE is present. As in previous sampling rounds, none of the indoor air samples collected showed values approaching the interim action levels for TCE. There were no sub-slab or indoor air concentrations exceeding NHDES commercial screening levels of 1.8 µg/m3 in indoor air or 90 µg/m3 in soil gas for TCE in samples collected on August 13th, 2015.Multiple rounds of sampling have been completed at the RMS and are presented in the following.
Description: Administrative Record
Rights: Approved for public release; distribution is unlimited
URI: http://hdl.handle.net/11681/26705
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