Joint Meeting of the
Licensed Site Professional Association (LSPA) and
the Society for Risk Analysis- New England Chapter (SRA-NE)

This is a special annual event that brings together risk assessment professionals and LSPs to discuss critical issues affecting the investigation and remediation of waste sites in Massachusetts. We have booked the ballroom at the Four Points Hotel and we look forward to your attendance at the social event as well as the program described below. Events start at 5:30 pm. Contact Janet Keating-Connolly (jconnolly@gza.com) at GZA (GeoEnvironmental, Inc.) with any questions about this announcement.

Tuesday, March 4, 2003

Handouts: depvapor.pdf (Adobe PDF, 2.8 MB)

Modeling the Vapor Intrusion Pathway: Revisions to the MCP GW-2 Groundwater Standards

Andrew Friedmann, Ph.D.
andrew.friedmann@state.ma.us
Office of Research and Standards
Massachusetts Department of Environmental Protection

Paul W. Locke
paul.locke@state.ma.us
Bureau of Waste Site Cleanup
Massachusetts Department of Environmental Protection

Summary: In 1993, the Massachusetts DEP became the first state to focus on the vapor intrusion migration pathway and develop generic groundwater cleanup based on this exposure. In the past few years, concern about indoor air exposures resulting from contaminated groundwater has crossed over from the technical literature to the popular press as sites like Colorado's Redfield made headlines. In November 2002, the U.S. EPA issued draft guidance, "Evaluating the Vapor Intrusion to Indoor Air Pathway from Groundwater and Soils". At the state level, Massachusetts is completing a comprehensive revision to its GW-2 standards, based on the body of information that has been collected over the ten years since their initial development. This presentation will discuss the policy and technical issues associated with the revisions to the MCP GW-2 standards, and the national trend to give this pathway greater scrutiny.

Biographies:

Andrew Friedmann, Ph.D.

After earning his Ph.D. in physiology at Dartmouth Medical School in 1993, Dr. Andrew Friedmann conducted laboratory and field research in environmental toxicology for five years. During this time he specialized in chemicals that disrupt reproduction. In 1998, Dr. Friedmann worked as an environmental consultant until joining the Massachusetts Department of Environmental Protection in 2000 as an environmental analyst. Both as a consultant and environmental analyst, he has performed and reviewed numerous human health and ecological risk characterizations. In addition to continued risk assessment work, Dr. Friedmann currently participates in the development of state environmental standards, policies, and guidance, and represents the Department at public meetings.

Paul W. Locke

Mr. Locke has been with the MA Department of Environmental Protection since 1987 and is currently the Acting Deputy Division Director for Policy and Program Development in the Bureau of Waste Site Cleanup. Before joining BWSC in January, Paul was head of the Risk Analysis Group within the Office of Research and Standards, where he participated in environmental policy development, review of site-specific reports, and provided technical assistance to DEP staff and the regulated community. Mr. Locke has participated in numerous revisions to the Massachusetts Contingency Plan (310 CMR 40), including the current proposals known as the "Wave 2" revisions, which includes a comprehensive re-evaluation of the MCP numerical standards. He is the primary author of MCP Subpart I on human and environmental risk characterization and is a co-author of the Department's Guidance for Disposal Site Risk Characterization.

Mr. Locke holds a Bachelor's degree in Chemistry from Harvard College and a Master's degree in Civil Engineering from the Tufts University program in Public Health.