Workgroup Meeting

During the development of the Vapor Intrusion Guidance, MassDEP staff and Workgroup members identified several potential changes to the MCP that could strengthen and streamline the notification, assessment, cleanup & closure of vapor intrusion sites.  A Workgroup meeting has been scheduled to discuss such potential regulation revisions:

  • Thursday, February 9th, 1:00 – 3:00 pm @ MassDEP, One Winter Street, Boston, MA 02108

In addition, this and other reg reform initiatives will be on the agenda for the January 26, 2012 Waste Site Cleanup Advisory Committee meeting (9:30 AM – 12:00 PM, MassDEP Boston).

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Vapor Intrusion Audits

The following letter was prepared by Janine Commerford, Assistant Commissioner, MassDEP Bureau of Waste Site Cleanup, and published in the February, 2009 LSP Association Newsletter, http://www.lspa.org.


Vapor Intrusion Audits

Identifying and Mitigating Unacceptable Impacts to Indoor Air

MassDEP’s Bureau of Waste Site Cleanup is undertaking an evaluation of conditions at certain sites with Response Action Outcomes filed prior to April 2006, where the concentration of PCE (tetrachloroethylene) in groundwater may exceed the current GW-2 standard, to determine whether there may be vapor intrusion into nearby occupied buildings. Conditions at these sites may in fact be safe, but in light of the health concerns related to ongoing exposures to volatile chemicals in indoor air, MassDEP considers it necessary to determine whether vapor intrusion is occurring. Continue reading