Advances in High-Resolution Site Characterization: Application of Objective-Driven Remedial Investigation Methods at a Coal Tar DNAPL Site

摘要

Background/Objectives. The success of any remedial investigation can be measured by the quality of the conceptual site model and, importantly, by the integrity of the objecttives of the investigation. Here we describe how current and emerging site characterization tools were selected for a remedial investigation, based on the objective of reducing the footprint of an in-situ thermal remedy at a coal tar DNAPL site. The objectives of the remedial investigation were to (1) delineate the spatial distribution of the coal tar DNAPL; (2) quantify uncertainty in DNAPL volume and mass estimates; and (3) identify site characterization tools that could be used to design and assess the performance of the thermal remedy. The key elements of the remedial investigation, the optimization of a real-time site characterization using adaptive sampling methods and the outcome for the investigation for remedy design will be discussed.