| Vapor intrusion from widespread hydrocarbon plumes at the Hartford Plume Site in the Village of Hartford, Illinois, have resulted in numerous residential housing fires and forced residents to move from their homes. The U.S. EPA Region 5, [Environmental Response Team (ERT), On-Scene Coordinators (OSC)] worked with a proactive group of oil companies (the Hartford Working Group [HWG]) from the area, to address public concerns at the site. The project team used the best management practices (BMPs) of the EPA's Triad Approach—namely, a well-structured systematic planning process, dynamic 'learn as you go' work strategies, and field-based measurement technologies—to expedite the investigation, mitigation, and cleanup processes. The EPA Region 5 OSCs were supported by Triad advocates representing EPA's Office of Superfund Remediation and Technology Innovation (OSRTI) to provide a second opinion on critical project design considerations. Through the combined efforts of the project team, the extent of contamination was defined in approximately 2 years and an existing mitigation system was augmented and optimized. |