Assessing contaminant-removal conditions and plume persistence through analysis of data from long-term pump-and-treat operations.

ABSTRACT: Historical groundwater-withdrawal and contaminant-concentration data collected from long-term pump-and-treat operations were analyzed and used to examine contaminant mass discharge (CMD) and mass-removal behavior for multiple sites. Differences in behavior were observed, and these differences were consistent with the nature of contaminant distributions and subsurface properties of the sites. For example, while CMD exhibited a relatively rapid decline during the initial stage of operation for all three sites, the rate of decline varied. The greatest rate was observed for the PGN site, whereas the lowest rate was observed for the MOT site. In addition, the MOT site exhibited the lowest relative reduction in CMD. These results are consistent with the actuality that the MOT site likely contain

SUBMITTER: Brusseau ML 

PROVIDER: S-EPMC4117718 | biostudies-literature | 2014 Aug

REPOSITORIES: biostudies-literature