Search Results for the EPA National Library Catalog

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Upper Mississippi River water quality assessment report / 2002
Upper Spokane River Model in Idaho: Boundary Conditions and Model Setup for 2001. 2003
Urban groundwater-- meeting the challenge selected papers from the 32nd International Geological Congress (IGC), Florence, Italy, August 2004 / [electronic resource] : 2007
Urban growth and the water regimen : a review, classification, and preliminary evaluation of the significance of the effects of urbanization on the hydrologic regimen / 1961
Urban Stormwater Management: Legislation is Necessary. Session 3. Topics in Planning and Management. 1988
US EPA's program to regulate the placement of waste water and other fluids underground. 2004
Use of 'Selenastrum capricornutum' to Assess the Toxicity Potential of Surface and Ground Water Contamination Caused by Chromium Waste. 1988
Use of a field drain and an artificial wetland to minimize ground-water contamination from an agricultural site / 1998
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 alternate concentration limits (CLs) in Superfund cleanups / 2005
Use of an ultra-clean sampling technique with inductively coupled plasma-mass spectrometry to determine trace-element concentrations in water from the Kirkwood-Cohansey Aquifer system, coastal plain, New Jersey 1996
Use of bioremediation at Superfund sites. 2001
Use of data fusion to optimize contaminant transport predictions 1997
Use of field-scale phytotechnology for chlorinated solvents, metals, explosives, and propellants, and pesticides : status report. 2005
Use of finite-difference arrays of observation wells to estimate evapotranspiration from ground water in the Arkansas River Valley, Colorado / 1973
Use of flexible membranes in hazardous and nonhazardous landfills / 1990
Use of GIS to assess ground water vulnerability to pesticide contamination : Jefferson County, WV pilot study. 1994
Use of ground water for irrigation in the South Platte Valley of Colorado 1943
Use of ground-water reservoirs for storage of surface water in the San Joaquin Valley, California / 1964
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 Linear Programming for Estimating Geohydrological Parameters of Groundwater Basins. 1970
Use of Moments for Mapping Vertical Variability of Cretaceous Aquifers in Mississippi. 1971
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 streamflow records and basin characteristics to estimate ground-water recharge rates in Ohio / 2002
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 the DRASTIC Model to Evaluate Groundwater Pollution Sensitivity from On-Site Wastewater Systems in the Mesilla Basin. 2015
Use of tracers to confirm ground water flow 1977
USEPA method study 35 : SW method 3005, acid digestion of waters for total recoverable or dissolved metals for analyses by flame atomic adsorption spectroscopy / 1989
User's guide for MANAGES personal computer software for the management and evaluation of groundwater monitoring data, version 1.0 / 1993
User's guide for polyethylene-based passive diffusion bag samplers to obtain volatile organic compound concentrations in wells. Part 1, Deployment, recovery, data interpretation, and quality control and assurance. 2001
User's guide for polyethylene-based passive diffusion bag samplers to obtain volatile organic compound concentrations in wells. Part 2, Field tests / 2001
User's guide for polyethylene-based passive diffusion bag samplers to obtain volatile organic compound concentrations in wells. Part I, Deployment, recovery, data interpretation, and quality control and assurance / 2001
User's manual for EPA's composite model for landfills (EPACML) 1990
Using Experimental Models to Guide Data Gathering. 1970
Using geophysical logs to estimate porosity, water resistivity, and intrinsic permeability / 1989
Using reclaimed water to augment potable water resources / 1998
Using specific capacity to estimate transmissivity : field and computer methods / 1995
Using tracers to evaluate streamflow gain-loss characteristics of Terror Creek, in the vicinity of a mine-permit area, Delta County, Colorado, water year 2003 / 2005
UST corrective action technologies : engineering design of free product recovery systems / 1996
UST corrective action technologies : engineering design of free product recovery systems / 1995
UST corrective action technologies : engineering design of free product recovery systems : project summary / 1996
Utah Lake - Jordan River Hydrologic Basins Water Quality Management Planning Study. Volume I. 1975
Utilization of numerical groundwater models for water resource management / 1978
Vadose zone hydrology / 1996
Vadose zone monitoring for hazardous waste sites / 1983
Vadose zone monitoring for hazardous waste sites / 1983
Vadose zone monitoring for hazardous waste sites / 1984
Vadose zone processes 1999
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