Record Display for the EPA National Library Catalog


Main Title Simulation of DNAPL Distribution Resulting from Multiple Sources.
Author Fishman, M. ; Guarnaccia, J. ; Wood, L. ; Enfield, C. ;
CORP Author Dynamac Corp., Ada, OK. ;CIBA-GEIGY Corp., Toms River, NJ.;Robert S. Kerr Environmental Research Lab., Ada, OK.
Publisher 2000
Year Published 2000
Report Number EPA-68-C4-0031; EPA/600/A-01/103;
Stock Number PB2002-101511
Additional Subjects Ground water ; Contamination ; Simulation models ; Numerical simulators ; Porous media ; Fluid entrapment ; Saturation hysteresis ; Aquifers ; Dense non aqueous phase liquid(DNAPL) ; NAPL
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
NTIS  PB2002-101511 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 12p
A three-dimensional and three-phase (water, NAPL and gas) numerical simulator, called NAPL, was employed to study the interaction between DNAPL (PCE) plumes in a variably saturated porous media. Several model verification tests have been performed, including a series of 2-D laboratory experiments involving the migration of PCE through a variably saturated, homogeneous sand. A comparison of the experimental data to the model results illustrates the effect and importance of fluid entrapment and saturation hysteresis. The NAPL model was used to simulate a 3-D multi point PCE source release within a contained test cell at the Groundwater Remediation Field Laboratory (GRFL) in Dover, Delaware. In this experiment, the migration of PCE in the unsaturated and saturated zones, under various infiltration scenarios, was simulated. The modeling of multiple injection points in a homogeneous aquifer shows that the ultimate distribution of PCE depends on the injection points in a homogeneous aquifer shows that the ultimate distribution of PCE release rates, and the depth to the water table. In general, an intermittent, slow, injection rate caused narrow, deeply penetrating DNAPL plumes. On the other hand, higher injection rates resulted in a wider horizontal distribution and more interaction between neighboring plumes, thus creating non-symmetric distributions and an increase in the flow rate and the depth of penetration.