Site 1
Site one was the facilities ash disposal area ranging from the years 1954 to 1973 and had an area of approximately 13000 square feet divided into two separate areas. Here, ash was disposed of from classified documents that had been incinerated. It was estimated that about 3 tons of documents and other paint materials were incinerated yearly. This produced about 570 pounds of lead, 320 pounds of zinc, and 190 pounds of chromium over the time that the site disposal area was in use. Investigations concluded that the waste from the ashes were potentialSite 2
Site two was home to the facilities components laboratory fuel tank that was used from the year of 1953 until 1982. The fuel tank had a storage capacity of 20000 gallons of fuel oil. This fuel was used to help supply oil for use in boilers around the facility. The use of the fuel tank was ultimately shut down and drained after a leak was detected. It was concluded that about 200 gallons of oil leaked into the surrounding soils.Site 3
Site three is divided into two section, one in the northern section of the facility and one in the southern section. Although both sections are labeled under site three, both are considered separate sections and action plans are incorporated in both, not accounted as the same.Northern Section
Site 3 is known as the dissolved-phase chlorinatedSouthern Section
The second section labeled as site 3 is known as the chlorinated solvent Ground water plume, Southern plume. Just like in the northern plume, VOC’s have been found in ground water in this section as well. The source of contamination for this section remains unknown. Investigations done determined that this was not likely due to further contamination from the northern section. This was determined based on test done on groundwater wells upgradient of where the highest concentration of VOC’s were detected. It was later one deemed that the likely cause of contamination in this sections ground water was likely do to already contaminated water in the Air force Superfund site -Hanscom Site 1.Site 4
This site is known for the benzene, toluene, ethylbenzene, and xylene (BTEX) plume. The source of these contaminations are associated with the 7,600 gallon underground storage tank that is in the area, as well as other maintenance activities that were done in the transportation building in the area as well. It was determined that the plumes for site 3 and 4 have essentially come together/ blended.Clean up
Initial assessment for the site contamination was done on 03/09/1990. It was three years later (06/23/1993) that NWIRP Bedford was proposed to be added to the National Priorities list and was finally added to the list on 05/31/1994. After investigation and testing around the different sites, remedial action began 03,21,2011 and concluded on 04/01/2015. Both site 1 and site 2 had a no action record of decision ( RDO) which was signed in 2000. Site 3 had an RDO signed in 2010. This was done with the criteria of having 5 year reviews, long term monitoring, as well as a continued operation of the existing groundwater treatment system . Site 4 had and RDO signed in 2009. Five year reviews, prohibiting the use of site groundwater, prohibiting residential redevelopment of the site, and restricting site building occupancy and continued monitoring were apart of this RDO.See also
*References
Bedford, Massachusetts Installations of the United States Navy in Massachusetts Military Superfund sites Buildings and structures in Middlesex County, Massachusetts Superfund sites in Massachusetts Military installations closed in 1952 1952 establishments in Massachusetts 2000 disestablishments in Massachusetts Closed installations of the United States Navy {{Environmental-disaster-stub