This story was originally published in the Fall 2011 UW SRP eBulletin.
In June of this year, Dr. Paul Johnson from the University of Arizona shared his research on temporal changes in vapor intrusion (VI) behavior and the implications this has for conventional pathway assessment paradigms. Dr. Johnson's presentation focused on an ongoing study involving high temporal resolution monitoring of a home residence overlying a low concentration (10-30 ug/L) dissolved chlorinated solvent plume; his findings revealed that behavior not previously conceptualized in creating guidance for VI pathway were present.
The UW-SRP sponsors regular seminars held in Seattle at the regional EPA headquarters (remote connection to upcoming seminars is also available.) The seminars are directed toward an audience of agency staff involved with risk assessment and communication at Superfund sites, such as EPA Region 10 and the Washington State Departments of Health and Ecology. Topic requests come from our agency partners - the series provides a forum for intra-agency discussions with scientists about current research and applications of the science.