The integrated DNAPL site strategy (IDSS) is an approach for managing sites contaminated with chlorinated solvents and dense nonaqueous-phase liquids (DNAPLs), which are difficult and persistent groundwater contaminants. It emphasizes understanding site conditions, setting realistic cleanup goals, and using multiple, complementary remediation technologies over time. The strategy relies on adaptive management, targeted monitoring, and periodic reevaluation to make steady progress toward risk reduction where complete cleanup may take decades.
The Integrated DNAPL Site Strategy (IDSS-2, 2020) guidance document helps site managers develop a structured approach for managing sites contaminated with chlorinated solvents and dense nonaqueous-phase liquids. It outlines five key elements: building a reliable conceptual site model, setting clear and measurable cleanup goals, using multiple treatment technologies in sequence or in combination, designing monitoring strategies tied to performance objectives, and regularly reevaluating and adjusting the remedy as conditions change. The document explains these concepts and recent advances to support more effective, adaptive site management for complex contamination scenarios.
Topic(s): Chlorinated Solvents, DNAPL, Groundwater, Groundwater Monitoring, Site Characterization, Water Quality
