Record of Decision System (RODS)
|Site Name:||NORWOOD PCBS|
|Address:||NEAR RTE 1 & DEAN STREET|
|City & State:||NORWOOD MA 02062|
|NPL Status:||Currently on the Final NPL|
Please note that the text in this document summarizes the Record of Decision for the purposes of facilitating searching and retrieving key text on the ROD. It is not the officially approved abstract drafted by the EPA Regional offices. Once EPA Headquarters receives the official abstract, this text will be replaced.
The Norwood PCB site is located approximately 14 miles southwest of the City of Boston. The site consists of several parcels of land including industrial/commercial properties and associated parking areas. To the north, the site is bordered by and includes Meadow Brook and its banks, to the east by the heavily commercial U.S. Route 1 and the Dean Street access road, to the south by Dean Street, and to the west by the residential Pellana Road. All residential and commercial properties within or adjacent to the site are supplied with water from the Norwood municipal system. The town is provided with public water through a connection to the Massachusetts Water Resource Authority (MWRA) system. An undetermined number of residences in the area reportedly use private groundwater wells to supply water for gardening and lawn sprinklers.
Contamination at the Norwood PCB site originated from disposal practices of the parties who owned property at the site or operated businesses in the building located on the property now owned by John and Robert Hurley, Trustees of the Grant Gear Realty Trust. The building was constructed in 1942 by Bendix Aviation Corporation, which produced navigational control systems and conducted other activities. From 1947 until 1979, the property was owned by several different electronic-type companies. In 1979, the site was subdivided. The northeastern portion of the site, approximately 9 acres, was purchased by Grant Gear Realty Trust, which then leased the facility to Grant Gear Works, Inc., to produce gears for industry. The southern and western portions of the site, approximately 16 acres, were purchased by three individuals who further subdivided the property into seven lots and added an access road, Kerry Place. The lots are now occupied by commercial and light industrial buildings. One lot at the corner of Dean Street and Kerry Place remains vacant.
In 1983, the Massachusetts Department of Environmental Quality (DEP) received a telephone call from a citizen living on Pellana Road reporting past industrial waste dumping and contamination in the then vacant field of Kerry Place between Pellana Road and the Grant Gear property. As a result of this call, an initial investigation by DEP was conducted and polychlorinated biphenyl (PCB) contamination was confirmed. The DEP immediately moved to restrict public access to the field area and marked areas within Grant Gear fence to alert workers of the possible danger. An immediate removal addressed all soils outside the Grant Gear property with PCB contamination greater than 50 parts per million (ppm). A total of 518 tons of contaminated soil was removed and disposed of at a New York landfill. This removal was completed in mid-1983.
In mid-1984, the site was listed on the National Priories List (NPL). Based on preliminary studies, an Interim Remedial Measure (IRM) implemented at the site in early 1986 was considered necessary to limit access to areas of highest surface soil contamination within the fenced area of the Grant Gear property. Studies into the type and extent of contamination were completed in 1992 and cleanup began in 1994 with the construction and initial operation of the groundwater treatment facility. Construction of the facility was completed in 1995 and the plant is currently in operation. In addition, a decontamination effort for equipment and machinery inside the Grant Gear building was conducted in 1995, as was the excavation of contaminated soils from four other areas located outside of the Grant Gear property.
The original remedy had the following major components: groundwater extraction and treatment; excavation, treatment via solvent extraction, and subsequent re-disposal of contaminated soils and sediments; and remediation of the Grant Gear building.
The amended remedy has the following major components: demolition of the Grant Gear building; consolidation of contaminated soil and soil and sediment from Meadow Brook onto a portion of the Grant Gear property; removal of "hot spot" contamination below the water table; covering of the most heavily contaminated areas of the Grant Gear property with an asphalt cap and covering of other areas with clean fill material; periodic monitoring to assess performance and protectiveness of the remedy; inspections and maintenance of the cap and cover; and continued on-site groundwater extraction and treatment.
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