Stephen Emsbo-Mattingly, M.S., NewFields Environmental Forensics Practice, LLC, Rockland, MA
Scott Stout, Ph.D., NewFields Environmental Forensics Practice, LLC, Rockland, MA
Gregory Douglas, Ph.D., NewFields Environmental Forensics Practice, LLC, Rockland, MA

Growth in the application of environmental forensics continuously expands the depth of our understanding about the sources, fate and transport of man-made chemicals in soil, sediment, water, and air.  This workshop reviews fundamental chemistry and forensic data analysis techniques used in the study of  petroleum hydrocarbons,  MGP tars , and polychlorinated biphenyls (PCBs).  Illustrative case studies will be presented on subjects that include the release of gasoline, fuel oil, crude oil, manufactured gas plant (MGP) tar, creosote, and electric insulating fluids.  The case studies will demonstrate source identification, age-constraining, and numerical techniques with an emphasis on what works and what does not.  These real-world examples will illustrate a tiered data and site analysis approach that maximizes the use of historical and forensic data for chemical delineation and allocation purposes in high and low (background) level situations. 

Workshop #7:  Massachusetts Contingency Plan Method 2 Risk Characterizations

Janet Keating-Connolly, M.S., LSP, GZA GeoEnvironmental, Inc., Norwood, MA
Julianna Connolly, M.Eng, GZA GeoEnvironmental, Inc., Norwood, MA

The objective of this workshop is to help LSPs gain a thorough knowledge of the use of Method 2 Risk Characterization approaches to achieve Response Action Outcomes in accordance with the MCP.  The workshop will provide a thorough review of the regulations that govern the application of Method 2 risk assessment approaches to Massachusetts Contingency Plan (MCP) disposal sites, explanation of the calculations, equations and inputs to the derivation of standards, and hands-on exercises (to be completed by attendees) for deriving new standards and modifying existing standards to be used to evaluate risk at MCP disposal sites. 

This course adds value to the LSP community because it offers an opportunity to learn not only about the regulatory requirements of MCP risk characterizations, but also the process of deriving risk-based standards.  Such understanding can serve to improve risk-based decision-making at MCP disposal sites

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