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Waste Site Cleanup & Reuse in New England

Grugnale Waste/Drum Disposal Site

In 1979, the Grugnale Waste Disposal site on Jennison Road in Milton, NH, was discovered when drinking water wells on and near the site were found to be contaminated with benzene and toluene. Chemical waste containers stored there were removed by the property owner after a request from the NH Department of Environmental Services. Sampling in the 1980s by EPA and DES confirmed the presence of groundwater contamination, which included volatile organic compounds associated with petroleum products and industrial solvents. Monitoring of the wells showed that the concentrations of contaminants decreased in the years after the containers were removed. Results from well sampling in the 1990s showed contaminants previously detected but at concentrations below federal standards.

In the late 1990s, more drinking water sampling by DES led found contamination in eight residential wells at, near or above a drinking water criterion for chlorotrifluoroethene. Between April 1999 and June 2000, EPA did a cleanup that involved connecting 24 homes to the municipal water system. In 2002, additional investigating by DES at the former Grugnale Disposal Site focused on areas where drums containing waste were allegedly buried.

In July of 2002, DES discovered several buried drums in the northwest corner of a pasture. Laboratory results from sampling revealed high levels of methyl ethyl ketone, toluene, xylene and ethylbenzene. At the request of DES, EPA and its contractors did an investigation the next month and found two deteriorated drums with high levels of VOC’s and SVOCs. They also found other undisturbed but deteriorated drums buried in areas where test pits had been dug.

Beginning in November of 2002, EPA and its contractors installed de-watering wells and a groundwater treatment system. A total of 147 drums in two areas were excavated, over-packed, and staged for shipment to an off-site disposal facility. Once the contents were analyzed, the drums could be shipped to appropriate facilities. After this, EPA’s contractor restored the area, backfilling and grading excavated areas. Additional restoration activities, which included grading, re-installation of fencing and seeding were to be done by the property owner.

Location: Jennison Road, Milford, NH
Start date: 10/16/2003
End date: 07/27/2004
Contact: Claudia Deane (deane.claudia@epa.gov)

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