Recently the Aberjona Study Coalition (ASC) along with their environmental technical advisors from CDM Smith were invited to visit and to observe remedy implementation at the Industri-plex Superfund Site. We very much appreciated the opportunity to see the current status of the remedy and to interact with EPA Project Manager, Joe LeMay at the site.During the site visit we observed contractors implementing the various components of the clean-up and restoration, and judging from what we observed, progressing well in the effort. The coffer dam structures have been installed in the Halls Brook Holding Area, which is being prepared to treat contaminated groundwater discharge. Dredging/removal of contaminated sediments are underway in the lower portion (the secondary treatment cell). These materials are by nature wet, and we did not observe any dust in the staging area where the sediments are loaded into trucks for off-site disposal. Two encouraging signs were (1) the number of birds already utilizing the reconfigured Halls Brook Holding Area and (2) the amount of debris removal that EPA has removed from the wetland area adjacent to the Mass Rifle Association. Once finished, we expect the remedy will provide a functional resource that will greatly diminish the level of contaminants flowing through the Aberjona River watershed while simultaneously providing an improved naturalized area for passive recreation activities including walking and bird watching.Joe LeMay provided information that addressed our concern over wetlands compensation. Because the Halls Brook Holding Area is being used as part of the remedial solution, new wetlands were required to replace it. Technically, the replacement area needed to be as large as the area taken, but this requirement was modified to allow for improvement and restoration of some existing wetland areas. This approach was not adequately explained in the draft 100% Design Report, but per Mr. LeMay’s explanation, should be improved in the final report. If some portion of the treatment cell continues to be used by birds, the overall improvement will be even greater.The upcoming dredging in the Cranberry Bog area will be more noticeable to the public (specifically nearby residents), but that efforts have and will be undertaken to provide notification and information. Once the remedy is completely in place, environmental monitoring will be a key component, both in the short-term (to ensure that the system is working) and long-term (to check that it continues to work).Overall, we think the remediation is a great success story, and will be a big step forward for Woburn and communities downstream on the Aberjona River.
Aberjona Study Coalition, Inc.
10 North Maple Street
Woburn, MA 01801
contact Linda Raymond - 781-935-2438
or by email email@example.com