Groundwater Circulating Well Technology Assessment

摘要

Groundwater Circulating Wells (GCWs) have been tested and/or operated at over 50 contaminated private and public sites in the U.S., with mixed results. Few sites have been clear successes and just as many seem to have been clear failures, the preponderance, however, are blurred into the middle, attaining some contaminant reduction but lacking the data to allow for validation of the technology's efficacy. The wide-scale use of GCW seems limited by a general uncertainty and skepticism about the technology's true performance. In the absence of well documented examples of successful demonstrations, the use of GCW technology will likely continue to be limited, at least on federal sites. The objective of this report is to complete a survey of GCW technology based on demonstrations at a number of federal and public sites documenting the successes and shortcomings of system performance. An additional objective is to document and develop guidelines for the use of the technology and make recommendations for additional data requirements to either support or argue against the use of this technology for articular contaminant and hydrogeologic applications.