Waste Site Cleanup & Reuse in New England
On March 11, 2010, the Massachusetts Department of Environmental Protection requested EPA's assistance at the Capen Street site in Milton, MA. An investigation by MassDEP the previous November, documented elevated levels of arsenic and lead in surface soils on property owned by the Massachusetts Department of Conservation and Recreation, adjacent to the Neponset River. Since there is a residential neighborhood next to this DCR property, MassDEP collected soil samples on private properties throughout the neighborhood in the summer of 2010 to determine if arsenic and lead were present in surface soils. Lead and/or arsenic were detected on several of properties above potential imminent hazard levels. Based on historical and anecdotal information, the source of the contamination was believed to result from the historic spraying of a lead and arsenic-based pesticide for gypsy moth caterpillar control.
In late May 2011, the MassDCR began excavating impacted soil from their property, and EPA began addressing the residential properties. In June, excavation commenced on the first of ten properties previously identified to EPA by the MassDEP. Since the walls and floor of each excavation were tested prior to backfilling, in many cases the excavations were expanded until the testing indicated that the levels of the contaminants of concern were below the imminent hazard levels. One of the excavations led to the removal of soil from two neighboring yards, and a second excavation expanded onto one immediate neighbor's property. In addition, one yard that previously had not been sampled contained arsenic and lead at levels of concern, raising the total number of properties to fourteen. In August 2011, excavation was completed, and restoration of these properties, including backfilling, grading, re-vegetation and fence reconstruction, continued until mid-September 2011.
Location: Milton, MA
Start date: 03/11/2010
End date: 09/21/2011
Contact: Claudia Deane (firstname.lastname@example.org)