A comparison of numerical and field modeling techniques in tracking contaminant plumes :. 1. Analysis of subsurface contaminant migration and remediation using high performance computing Tompson, Andrew F., Falgout, Robert D., Smith, Steven G., Bosl, William J. Ashby, Steven F.
A comparison of numerical and field modeling techniques in tracking contaminant plumes:
1. Analysis of subsurface contaminant migration and remediation using high performance computing
Tompson, Andrew F., Falgout, Robert D., Smith, Steven G., Bosl, William J. Ashby, Steven F.
2. A controlled field evaluation of continuous vs. pulsed pump-and-treat remediation of VOC-contaminated aquifer: site characterization, experimental setup, and overview of results
Mackay, D.M., Wilson, R.D., Brown, M.J., Ball, W.P., Xia, G., Durfee, D.P.
I. Computer modeling of contaminant migration and remediation
II. Field modeling of two different methods of remediation; constant vs. pulse pump-and-treat remediation of groundwater contamination
Time =41 years
Time = 82 years
(a) indicates displacement as a function of time of 5 realizations
(b) indicates the average displacement for the first 5 (s(t)) realizations and 6th realization (s6(t))
(a) plot of longitudinal spreading of first 5 realizations with displacement
(b) average longitudinal spreading as a function of displacement
(a) transverse spreading of 5 realizations with ambient-only displacement
(b) average of the spreading behavior for all 5 realizations
Slow mass transfer of contaminants into the flowing aqueous phase because:
(1) slow dissolution of non-aqueous phase liquids (NAPLs)
(2) slow diffusion from less permeable strata
(3) slow desorption of sorbed contaminants from aquifer solids
Conclusions:In order to stop the progression or flow of a contaminant plume, it s necessary to hydraulically isolate the plume with a series of perimeter wells and a single or multiple extraction wells. In order to remediate the area containing the plume, a solid understanding of the regional hydrology must be known, and the aquitards must be the focus of the extraction.