Human Health Risk Assessor
Laura Trozzolo received her B.S. in biology from the University Of Notre Dame in 1993 and her M.S. in risk decision analysis from Indiana University in 1995. She is a Senior Human Health Risk Assessor with TRC, where she provides data management and regulatory oversight for human health risk assessment and risk management services for military sites, former Manufactured Gas Plant sites, active and former refineries, as well as railroad derailments and operational sites. In addition, Laura serves as a technical specialist on vapor intrusion issues for TRC, specializing in fate and transport of contaminants in the environment. When she is not working, Laura is wrangling 6 year old twin boys and vaguely remembers enjoying something called “free time”.
Atmospheric Long Range Transport of PFAS
PFAS are ubiquitous in ambient (outdoor) air, with elevated concentrations observed in urbanized areas nearest to emission sources such as manufacturing facilities, wastewater treatment plants, and landfills. Long-range transport (LRT) processes are responsible for the wide distribution of PFAS across the globe, as evidenced by their occurrence in surface snow, ice cores, seawater, and other environmental media in remote regions as far as the Arctic and Antarctic. This presentation will discuss LRT, as well as factors that influence atmospheric fate and transport of PFAS.
Per-and Poly-fluoroalkyl Substances (PFAS): ITRC's PFAS Team Progress: The Latest Information
Per- and polyfluoroalkyl substances (PFAS) such as perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS) are a large and complex class of anthropogenic compounds whose prevalence in the environment have become an emerging, worldwide priority in environmental and human health. Certain compounds are believed to be environmentally persistent, and bioaccumulative, and pose human health risks. Recent high-profile cases involving human exposure in the United States have further focused both public and regulatory scrutiny on PFAS. The scientific communityâ€™s understanding of PFAS sources, site characterization, environmental fate and transport, analytical methods, and remediation is growing rapidly. However, there is no central clearinghouse available that presents this information in a manner that is readily accessible to those other than subject-matter experts. As a result, there is a gap in the broad technical understanding necessary for informed and expedited decisions by regulators and policy makers. The Interstate Technology & Regulatory Council (ITRC) established a team to create a resource of key technical and regulatory information, which will be valuable for stakeholders to be able to efficiently and effectively understand risk management strategies being developed for PFAS contamination.
The team convened in January 2017 and currently has 282 members. The goal of this project is to produce concise technical resources that will help regulators and other stakeholders improve their understanding of the current science regarding PFAS compounds. The project will produce a series of six Fact Sheets, each synthesizing key information for one of the following core subjects: (1) History and Use, (2) Nomenclature Overview and Physicochemical Properties, (3) Regulatory Summary, (4) Site Characterization Tools, Sampling Techniques, and Laboratory Analytical Methods, (5) Fate and Transport, and (6) Remediation Technologies and Methods. Our goal is to develop a unified summary of the state of the art information in these areas. Following these fact sheets will be the release of a detailed technical and regulatory guidance document and an internet-based training course, which will provide links to pertinent scientific literature, stakeholder points of view, technical challenges and uncertainties, and the necessary breadth and depth not given by the Fact Sheets. The presentation will provide an overview of ITRCâ€™s progress, some interesting and new facts we have learned about PFAS, and our schedule for completion.