AEG investigated the property after volatile organic compounds in groundwater were found in the overburden and bedrock. AEG advanced additional monitoring wells into bedrock in order to define the extent of impact. Additional monitoring wells showed evidence of impact, although spatial data indicated that the plume was shrinking. With this information, AEG was able to show the plume was not reaching a stream that eventually fed to a public drinking water supply. Although further response was not required, AEG investigated several technologies to further promote the removal of contaminant from the groundwater. Based upon careful consideration, AEG selected air-sparging. Following one year of treatment, a significant decrease was observed, and in most cases contaminants were not detected.