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Main Title 3DFEMWATER/3DLEWASTE : numerical codes for delineating wellhead protection areas in agricultural regions based on the assimilative capacity criterion /
Author Yeh, G. T. ; Sharp-Hansen, S. ; Lester, B. ; Strobl, R. ; Scarbrough, J.
Other Authors
Author Title of a Work
Yeh, G. T.
CORP Author AQUA TERRA Consultants, Mountain View, CA. ;Pennsylvania State Univ., University Park. ;GeoTrans, Inc., Sterling, VA. ;AScI Corp., Athens, GA.;Environmental Research Lab., Athens, GA.
Publisher Environmental Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency,
Year Published 1992
Report Number EPA 600-R-92-223; EPA-68-CO-0019
Stock Number PB93-217669
OCLC Number 29505747
Subjects Wellheads--Protection--Mathematical models ; Groundwater--Pollution--Mathematical models ; Water, Underground--Pollution--Mathematical models
Additional Subjects Wellheads ; Three dimensional flow ; Water pollution control ; Water wells ; Path of pollutants ; Ground water ; Agricultural chemicals ; Agricultural wastes ; Water supply ; Computerized simulation ; Air water interfaces ; Sediment water interfaces ; Saturated flow ; Unsaturated flow ; 3DFEMWATER computer model ; 3DLEWASTE computer model
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD  EPA/600-R-92-223 Headquarters Library/Washington,DC 04/28/1995
ELBD  EPA 600-R-92-223 AWBERC Library/Cincinnati,OH 04/10/1998
EMBD  EPA/600/R-92/223 NRMRL/GWERD Library/Ada,OK 02/03/1995
NTIS  PB93-217669 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation xi, 240 pages : illustrations ; 28 cm
Abstract Two related numerical codes, 3DFEMWATER and 3DLEWASTE, are presented that can be used to delineate wellhead protection areas in agricultural regions using the assimilative capacity criterion. 3DFEMWATER (Three-dimensional Finite Element Model of Water Flow Through Saturated-Unsaturated Media) simulates subsurface flows, whereas 3DLEWASTE (Hybrid Three-dimensional Lagrangian-Eulerian Finite Element Model of Waste Transport Through Saturated-Unsatured Media) models contaminant transport. Both codes treat heterogeneous and anisotropic media consisting of as many geologic formations as desired, consider both distributed and point sources/sinks that are spatially and temporally dependent, and accept for types of boundary conditions--i.e., Dirichlet (fixed-head or concentration), specified-flux, Neumann (specified-pressure-head gradient or specified-dispersive flux), and variable. The variable boundary condition in 3DFEMWATER simulates evaporation/infiltration/seepage at the soil-air interface and, in 3DLEWASTE, simulates mass infiltration into or advection out of the system. 3DLEWASTE contains options to model adsorption using a linear, Fruendlich, or Langmuir isothern, plus dispersion, and first-order decay.
Notes "EPA/600/R-92/223" "November 1992" PB93-217669 Includes bibliographical references (p. 150-152).
Place Published Athens, Ga. :
Supplementary Notes Prepared in cooperation with Pennsylvania State Univ., University Park, GeoTrans, Inc., Sterling, VA., and AScI Corp., Athens, GA. Sponsored by Environmental Research Lab., Athens, GA.
Corporate Au Added Ent Environmental Research Laboratory (Athens, Ga.)
Alternate Title Numerical codes for delineating wellhead protection areas in agricultural regions based on the assimilative capacity criterion.
PUB Date Free Form {1992}
NTIS Prices PC A12/MF A03
BIB Level m
Medium microform
Cataloging Source OCLC/T
OCLC Time Stamp 19980408124344
Language eng
Origin OCLC
OCLC Rec Leader 01232cam 2200289Ia 45020