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Record of Decision System (RODS)

FORT DEVENS

Abstract

Site Name:  FORT DEVENS
Address:  BUENA VISTA ST 
City & State:  FORT DEVENS  MA  01433
County:  WORCESTER, MIDDLESEX
 
EPA ID:  MA7210025154
EPA Region:  01
 
NPL Status:  Currently on the Final NPL
 
ROD Type:  Record of Decision
ROD ID:  EPA/541/R-97/158
ROD Date:  10/17/1996
Operable Unit(s):  06
 
Media:  Subsurface soil,groundwater
 
Contaminant:  Petroleum, oils, lubricants, benzene, toluene, ethylbenzene, xylene, BTEX, total petroleum hydrocarbon (TPHC), gasoline, waste oil USTs, 2-methylnaphthalene, naphthlene, phenanthrene, pyrene, VOCs, SVOCs, polynuclear aromatic hydrocarbons (PAHs), toluene, noncarcinogenic PAHs, inorganics, iron, arsenic, manganese, carbon tetrachloride, chloroform, arsenic, cadmium, lead, sodium, aluminum
 
Abstract:  Fort Devens is a site located in the Towns of Ayer and Shirley (Middlesex County) and Harvard and Lancaster (Worcester County), approximately 35 miles northwest of Boston, Massachusetts. Prior to closure, the installation occupied approximately 9,600 acres and was divided into the North Post, Main Post, and South Post.This Record of Decision (ROD) addresses subsurface soil and groundwater contamination at Area of Contamination (AOC) 43G, and groundwater contamination at AOC 43J. Both AOCs are located within the newly created Devens Reserve Forces Training Area. Fort Devens was established in 1917 as Camp Devens, a temporary training camp for soldiers from the New England area. In 1931, the camp became a permanent installation and was redesigned as Fort Devens. Throughout its history, Fort Devens served as a training and induction center for military personnel, and as a unit mobilization and demobilization site. All or portions of this function occurred during World Wars I and II, the Korean and Vietnam conflicts, and Operation Desert Shield and Desert Storm. During World War II, more than 614,000 inductees were processed and Fort Devens reached a peak population of 65,000.The primary mission of Fort Devens was to command, train, and provide logistical support for non-divisional troop units and to support and execute Base Realignment and Closure (BRAC) activities. The installation presently supports the Army Readiness Region and National Guard units in the New England Area.In conjunction with the Army's Installation Restoration Program (IRP), Fort Devens and the U.S. Army Environmental Center (USAEC) initiated a Master Environmental Plan (MEP) in 1988. The MEP identified 18 historic gas station sites and the then active petroleum, oils, and lubricant (POL) storage area as some of the potential sources of groundwater contamination, and recommended that each site be investigated to determine the distribution of contamination.
 
Remedy:  This remedial action addresses long-term commercial/industrial exposure to contaminated groundwater, the principal known threat at both AOC 43G and 43J. The selected remedial alternative for both AOC 43G and 43J relies on intrinsic bioremediation, groundwater and contaminant modeling, and long-term groundwater monitoring to evaluate the effectiveness of the alternative at controlling groundwater contamination and site risk. The remedy will mitigate existing groundwater contamination through natural attenuation and bioremediation and reduce the potential risk of future commercial/industrial exposure to contaminated groundwater. The major components of the selected remedy for both AOC 43G and 43J include: intrinsic bioremediation; intrinsic bioremediation assessment data collection and groundwater modeling; installing additional groundwater monitoring wells; long-term groundwater monitoring; annual data reports to the U.S. Environmental Protection Agency and Massachusetts Department of Environmental Protection (MADEP); and five-year site reviews.If the intrinsic bioremediation assessment results at AOC 43G and 43J indicate that: 1) the groundwater contaminant plume may increase in size on Army property and /or, 2) the groundwater contaminant plume remains the same size, but cannot be remediated within 30 years, a soil vapor extraction (SVE) system will be installed at the existing AOC 43G source area, and an additional cleanup action will be implemented at AOC 43J. Furthermore, if at any time during this remedy there is an indication that contaminants are migrating off Army property at an area located sufficiently inside the boundary in which compliance will be determined, then the Army will implement an additional remedial action which will be protective of human health and the environment.
 
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