Field and Laboratory Studies of Pulsed Pumping for Cleanup of Contaminated Aquifers.
Abstract
A field-scale investigation of pump-and-treat remediation was conducted at Dover AFB, DE, in sheet-pile test cells isolating two adjacent segments of a long-extant groundwater plume. For a given volume of extracted water, the fractional removal of contaminant mass was higher for the pulse pumped cell (PPC) than the continuously pumped cell (CPC) for all contaminants whose maximum aquifer concentrations were at or very near the aquiferlaquitard interface. Overall, the results of this work indicate that contaminant transport and subsurface remediation are influenced not only by (I) spatial variability of the transport medium (aquifer), but also by (2) spatial variability in the pre-remediation contaminant distribution, and (3) spatial variability of the sorption properties of the impacted low permeability media (aquitards, clay lenses, etc.). The results of this work have been and will continue to be extrapolated from Dover-specific conditions to a variety of hydrogeologic situations via modeling to emphasize the effects ofaquitard and initial" contamination heterogeneity on long-term remediation by any method constrained by diffusion of contaminants from low permeability media.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 28, 1997
- Accession Number
- ADA332736
Entities
People
- Donald P. Durfee
- Douglas M. Mckay
- M. J. Brown
- R. D. Wilson
- William P. Ball
Organizations
- University of Waterloo