Search Results for the EPA National Library Catalog

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Select Item Title Year Published
Three-dimensional plume dynamics in the vadose zone : PORFLO-3 modeling of a defense waste leak at Hanford / 1990
Toxic organic chemical transport and fate in groundwater systems : final technical completion report / 1984
Trace element analysis of groundwater : comparison of proton-induced X-ray emission (PIXE) with atomic absorption analysis (AA) / 1983
Tracer test to estimate hydraulic conductivities and dispersivities of sediments in the shallow aquifer at the East Gate Disposal Yard, Fort Lewis, Washington 1999
Tracer-test planning using the efficient hydrologic tracer-test design (EHTD) program 2003
Tracer-test planning using the efficient hydrologic tracer-test design (EHTD) program / 1978
Tracing ground-water movement by using the stable isotopes of oxygen and hydrogen, Upper Penitencia Creek alluvial fan, Santa Clara Valley, California / 1981
Transport model users manual 1974
Transport processes in porous media 1991
Two- and Three-Dimensional Flow of Groundwater / 2017
Two-dimensional modeling of contaminant plumes in advection-dominated groundwater transport / 1987
U.S. Geological Survey Toxic Substances Hydrology Program : abstracts of the technical meeting, Colorado Springs, Colorado, September 20-24, 1993 / 1993
U.S. Geological Survey Toxic Substances Hydrology Program : proceedings of the Technical Meeting, Colorado Springs, Colorado, September, 20-24, 1993 / 1996
UNSAT1D groundwater computer code manual IBM PC version / 1987
Unsaturated zone hydrology for scientists and engineers 1999
Use of a ground-water flow model with particle tracking to evaluate ground-water vulnerability, Clark County, Washington 1996
Use of a ground-water flow model with particle tracking to evaluate ground-water vulnerability, Clark County, Washington / 1998
Use of data fusion to optimize contaminant transport predictions 1997
Use of isotopes to identify sources of ground water, estimate ground-water-flow rates, and assess aquifer vulnerability in the Calumet Region of northwestern Indiana and northeastern Illinois / 2002
Use of particle tracking to improve numerical model calibration and to analyze ground-water flow and contaminant migration, Massachusetts Military Reservation, western Cape Cod, Massachusetts 1996
Use of surface-geophysical techniques for ground-water exploration in the Canovanas-Rio Grande area, Puerto Rico 1985
Use of temperature profiles beneath streams to determine rates of vertical ground-water flow and vertical hydraulic conductivity 1989
Use of tracers to confirm ground water flow 1977
User's guide for MANAGES personal computer software for the management and evaluation of groundwater monitoring data, version 1.0 / 1993
Using geophysical logs to estimate porosity, water resistivity, and intrinsic permeability / 1989
Using specific capacity to estimate transmissivity : field and computer methods / 1995
Vadose zone hydrology / 1996
Vadose zone processes 1999
Validity of Darcy's law under transient conditions 1987
VALOR code, version 1.0 a PC code for simulating immiscible contaminant transport in subsurface systems / 1992
VAM2D, variably saturated analysis model in two dimensions : version 5.0 with hysteresis and chained decay transport : documentation and user's guide / 1989
Variability of surface recharge and its effects on groundwater in Suffolk County, Long Island 1983
Variable thickness transient groundwater flow model user's manual : final report / 1981
Vertical profiles of streambed hydraulic conductivity determined using slug tests in central and western Nebraska / 2001
Volatile organic compounds in ground water west of LLNL 1986
Water and chemical movement through the biologically active surface layer of no-till soils final report / 1992
Water budget and the effects of land-use changes on ground-water recharge, Oahu, Hawaii 1996
Water flow and solute transport in soils : developments and applications :in memoriam Eshel Bresler (1930-1991) / 1993
Water flow in the High Plains Aquifer in Northwestern Oklahoma 2000
Water levels in Nassau County sewer districts 2 and 3, Long Island, New York, 1978-79 1983
Water movement and water chemistry in the unsaturated zone at a low-level radioactive-waste disposal site near Sheffield, Illinois, 1986-87 1993
Water movement in the unsaturated zone at a low-level radioactive-waste burial site near Barnwell, South Carolina 1989
Water quality in Pleasant Valley, Utah : final report / 1981
Water resources of the Batavia Kill Basin at Windham, Greene County, New York 1999
Water resources of the Humacao-Naguabo area, eastern Puerto Rico 1989
Water well and aquifer test analysis 1996
WhAEM : program documentation for the wellhead analytic element model / 1994
Woodward recharge demonstration project phase I feasibility study : high plains states groundwater demonstration program / 1993
Working with WhAEM2000 : source water assessment for a glacial outwash wellfield, Vincennes, Indiana / 2000
Yucca Mountain total system performance assessment phase 3 / 1996
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