Overview and Summary

摘要

The symposium focused on newly released critical continuous soil gas monitoring data associates with residential and industrial activity around the world. Multiple representatives from the United Kingdom, Canada, Germany, Brazil, etc., participated in the Symposium. From oil and gas companies, chemical companies through small industrial sites, there is a growing need to understand and mitigate worst case/explosive or high human health risk conditions. Dry cleaners, gas stations, refineries, tracking sites, landfills, landfill energy systems, machine shops, etc., all can exhibit Vapor Intrusion (VI) risk. Often driven by litigation, the interest in VI into homes and buildings has skyrocketed. Groundwater cleanup costs are dwarfed by the potential for class action VI suits. Recent dynamic risk observations pose serious implications about conventional approaches, best management practices, due diligence and formerly closed sites, and create a need to identify and understand site-specific conditions that warrant continuous monitoring. As such, several regulatory entities are now advocating for continuous VI monitoring and formerly closed sites with no further action letters are being reopened. The forthcoming reduction in the MCL's of TCE and its designation as a human carcinogen will have a dramatic effect on environmental site characterization, remediation and litigation.