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Federal Government


U.S. Army Corps of Engineers/Alion Science and Technology

This work is contracted through the U.S. Army Corps of Engineers (USACE)–Huntsville, and is managed by the USACE-Baltimore District Military Munitions Response Program Design Center. Under contract to Alion Science and Technology, EA is conducting site inspections at Formerly Used Defense Sites (FUDS) to determine whether there is a potential hazard from munitions and explosives of concern to include discarded military munitions and unexploded ordnance to be present and/or a release of munitions constituents as a result of previous Department of Defense actions that would pose an unacceptable risk to human health and the environment. The size of the Munitions Response Sites varies from small parcels of less than 20 acres to more than 10,000 acres in size. The FUDS involve multiple environmental settings (land and water ranges) that create complex migration pathways for source-receptor interactions.

This project includes records review of existing sources of data to gain a better understanding of munitions and explosives of concern/munitions constituents types/sources, migration pathways, and potential receptors for each FUDS. Personnel were mobilized to USACE (both the Design Center and geographic district) as well as the National Archives to assist in the record reviews of site-specific information. Internet and literature searches were conducted for natural resource information (open water, wetlands, and biological resources including rare, threatened, and endangered species) and to compile information into ecological profiles in support of the compilation of conceptual site models for potential release of munitions constituents of concern. EA prepared a Geographic Information System desktop deliverable in compliance with USACE format (Spatial Data Standards for Facilities, Infrastructure, and Environment-SDSFIE), using ArcView and ArcCatalog. A Geographic Information System was used to overlay munitions response sites, including range fans, firing points, impact areas, and historic munitions constituents/munitions and explosives of concern findings, on topographic maps and aerial photographs to focus site inspection activities in areas of expected contamination.

EA conducted reconnaissance in former ranges, disposal areas, storage areas, and other impacted areas and practiced munitions and explosives of concern avoidance during site inspection sampling. Ranges investigated include those with sensitive munitions; small, medium, and large caliber munitions; practice and live fire bombing ranges; open burn/open detonation areas; as well as small arms and skeet ranges. Designated sampling locations were correlated with historical Military Munitions Response Program-related range features (i.e., firing points, impact areas, disposal areas, etc.). A CRREL 7-point wheel sampling method was implemented for surface soil samples as well as discrete sampling for surface water, sediment, and groundwater samples as outlined in site-specific work plans to assess for the presence of munitions constituents. Background samples were collected for comparison of metals results, if appropriate, for each site. Analytical chemistry included select list of Target Analyte List metals, explosives, and—depending on past use of the site—perchlorate; picric acid; benzene, toluene, ethylbenzene, and xylenes; and polycyclic aromatic hydrocarbons. An EQuIS database of laboratory data was maintained for more than 1,400 sediment, surface water, and quality control samples; this database is linked to another Microsoft Access database that stores screening criteria for use with human and ecological risk screening. EA generated data summary tables, background comparison tables, and risk screening tables. Data were provided in Environmental Data Management System format, using Automated Data Review to review data. The files were exported from Automated Data Review for importation into munitions response site prioritization protocol wizard for site ranking.