Unsaturated Zone

Contaminant transport and fate in the unsaturated zone

Masoner, J.R., Stannard, D.I., and Christenson, S.C., 2008,

Differences in evaporation between a floating pan and class A pan on land, doi:10.1111/j.1752-1688.2008.00181.x (Advanced Web release).

Walvoord, M.A., Andraski, B.J., Krabbenhoft, D.P., and Striegl, R.G., 2008,

Transport of elemental mercury in the unsaturated zone from a waste disposal site in an arid region: Applied Geochemistry, v. 23, no. 3, p. 572-583, doi:10.1016/j.apgeochem.2007.12.014.

Delin, G.N., and Risser, D.W., 2007,

Ground-water recharge in humid areas of the United States--A summary of Ground-Water Resources Program studies, 2003-2006: U.S. Geological Survey Fact Sheet 2007-3007, 4 p.

Garcia, C.A., 2007,

Vertical tritium transport from the shallow unsaturated zone to the atmosphere, Amargosa Desert Research Site, Nevada: Reno, University of Nevada, M.S. Thesis, 122 p.

Johnson, M.J., Mayers, C.J., Garcia, C.A., and Andraski, B.J., 2007,

Selected micrometeorological, soil-moisture, and evapotranspiration data at Amargosa Desert Research Site in Nye County near Beatty, Nevada, 2001-05: U.S. Geological Survey Data Series 284, 28 p (Online only).

Nimmo, J.R., 2007,

Simple predictions of maximum transport rate in unsaturated soil and rock: Water Resources Research, v. 43, no. 5, W05426, doi:10.1029/2006WR005372.

Nimmo, J.R., Herkelrath, W.N., and Laguna Luna, A.M., 2007,

General framework for estimating soil water retention from textural data: Vadose Zone Journal, v. 6, no. 4, p. 766-773, doi:10.2136/vzj2007.0019.

Rao, B., Anderson, T.A., Orris, G.J., Rainwater, K.A., Rajagopalan, S., Sandvig, R.M., Scanlon, B.R., Stonestrom, D.A., Walvoord, M.A., and Jackson, W.A., 2007,

Widespread natural perchlorate in unsaturated zones of the southwest United States: Environmental Science and Technology, doi:10.1021/es062853i (Advanced web release).

Stonestrom, D.A., Prudic, D.E., Walvoord, M.A., Abraham, J.D., Stewart-Deaker, A.E., Glancy, P.A., Constantz, J., Laczniak, R.J., and Andraski., B.J., 2007,

Focused ground-water recharge in the Amargosa Desert Basin, in Stonestrom, D.A., Constantz, J., Ferre, T.P.A., and Leake, S.A., eds., Ground-water recharge in the arid and semiarid southwestern United States: U.S. Geological Survey Professional Paper 1703-E, p. 107-136.

Kakouros, E., Kharaka, Y.K., and Oberdorfer, J.A., 2006,

Leaching rates and forms of selenium in cores from an agricultural area in Middle Green River basin, Utah, USA: Earth Science Frontiers, v. 13, p. 86-97.

Kinney, C.A., Furlong, E.T., Werner, S.L., and Cahill, J.D., 2006,

Presence and distribution of wastewater-derived pharmaceuticals in soil irrigated with reclaimed water: Environmental Toxicology and Chemistry, v. 25, no. 2, p. 317-326, doi:10.1897/05-187R.1.

Kwicklis, E., Wolfsberg, A., Stauffer, P., Walvoord, M., and Sully, M., 2006,

Multiphase, multicomponent parameter estimation for liquid and vapor fluxes in deep arid systems using hydrologic data and natural environmental tracers: Vadose Zone Journal, v. 5, p. 934-950, doi:10.2136/vzj2006.0021.

Kwicklis, E., Wolfsberg, A., Stauffer, P., Walvoord, M., and Sully, M., 2006,

Numerical evaluation of liquid and vapor fluxes at the Nevada Test Site Area 3 radioactive-waste management site using hydrologic data and natural environmental tracers: Los Alamos National Laboratory Report.

McMahon, P.B., Dennehy, K.F., Bruce, B.W., Böhlke, J.K., Michel, R.L., Gurdak, J.J., and Hurlbut, D.B., 2006,

Storage and transit time of chemicals in thick unsaturated zones under rangeland and irrigated cropland, High Plains, United States: Water Resources Research, v. 42, W03413, doi:10.1029/2005WR004417.

Reilly, T.J., and Baehr, A.L., 2006,

Methodology to evaluate the effect of sorption in the unsaturated zone on the storage of nitrate and other ions and their transport across the water table, southern New Jersey: U.S. Geological Survey Scientific Investigations Report 2006-5074, 39 p.

Scholl, M.A., Cozzarelli, I.M., and Christenson, S.C., 2006,

Recharge processes drive sulfate reduction in an alluvial aquifer contaminated with landfill leachate: Journal of Contaminant Hydrology, v. 86, no. 3-4, p. 239-261, doi:10.1016/j.jconhyd.2006.03.005.

Stannard, D.I., and Weltz, M.A., 2006,

Partitioning evapotranspiration in sparsely vegetated rangeland using a portable chamber: Water Resources Research, v. 42, W02413, doi:10.1029/2005WR004251.

White, A.F., Schulz, M.S., Vivit, D.V., Blum, A.E., and Stonestrom, D.A., 2006,

Controls on pore water solutes--An approach for distinguishing between biogenic and lithogenic processes: Journal of Geochemical Exploration, v. 88, no. 1-3, p. 363-366, doi:10.1016/j.gexplo.2005.08.076.

Winfield, K.A., Nimmo, J.R., Izbicki, J.A., and Martin, P.M., 2006,

Resolving structural influences on water-retention properties of alluvial deposits: Vadose Zone Journal, v. 5, p. 706-719, doi:10.2136/vzj2005.0088.

Amos, R.T., Mayer, K.U., Bekins, B.A., Delin, G.N., and Williams, R.L., 2005,

Use of dissolved and vapor-phase gases to investigate methanogenic degradation of petroleum hydrocarbon contamination in the subsurface: Water Resources Research, v. 41, no. 2, W02001, doi:10.1029/2004WR003433.

Andraski, B.J., Stonestrom, D.A., Michel, R.L., Halford, K.J., and Radyk, J.C., 2005,

Plant-based plume-scale mapping of tritium contamination in desert soils: Vadose Zone Journal, v. 4, p. 819-827, doi:10.2136/vzj2005.0052.

Burow, K.R., Constantz, J., and Fujii, R., 2005,

Heat as a tracer to estimate dissolved organic carbon flux from a restored wetland: Ground Water, v. 43, no. 4, p. 545-556, doi:10.1111/j.1745-6584.2005.0055.x.

Caputo, M.C., and Nimmo, J.R., 2005,

Quasi-steady centrifuge method for unsaturated hydraulic properties: Water Resources Research, v. 41, W11504, doi:10.1029/2005WR003957.

Delin, G.N., and Herkelrath, W.N., 2005,

Use of soil moisture probes to estimate ground water recharge at an oil spill site: Journal of the American Water Resources Association, v. 41, no. 6, p. 1259-1277, doi:10.1111/j.1752-1688.2005.tb03799.x.

Green, C.T., Stonestrom, D.A., Bekins, B.A., Akstin, K.C., and Schulz, M.S., 2005,

Percolation and transport in a sandy soil under a natural hydraulic gradient: Water Resources Research, v. 41, doi:10.1029/2005WR004061.

Heppner, C.S., and Nimmo, J.R., 2005,

A computer program for predicting recharge with a master recession curve: U.S. Geological Survey Scientific Investigations Report 2005-5172, 8 p.

Hidalgo, H.G., Cayan, D.R., and Dettinger, M.D., 2005,

Sources of variability of evapotranspiration in California: Journal of Hydrometeorology, v. 6, no. 1, p. 3-19, doi:10.1175/JHM-398.1.

Mayers, C.J., Andraski, B.J., Cooper, C.A., Wheatcraft, S.W., Stonestrom, D.A., and Michel, R.L., 2005,

Modeling tritium transport through a deep unsaturated zone in an arid environment: Vadose Zone Journal, v. 4, p. 967-976, doi:10.2136/vzj2004.0179.

Nimmo, J.R., 2005,

Unsaturated zone flow processes, in Anderson, M.G., and Bear, J., eds., Encyclopedia of Hydrological Sciences--Part 13, Groundwater: Chichester, UK, Wiley, v. 4, p. 2299-2322.

Nimmo, J.R., Healy, R.W., and Stonestrom, D.A., 2005,

Aquifer recharge, in Anderson, M.G., and Bear, J., eds., Encyclopedia of Hydrological Science--Part 13, Groundwater: Chichester, UK, Wiley, v. 4, p. 2229-2246.

Niswonger, R.G., Prudic, D.E., Pohll, G., and Constantz, J., 2005,

Incorporating seepage losses into the unsteady streamflow equations for simulating intermittent flow along mountain front streams: Water Resources Research, v. 41, W06006, doi:10.1029/2004WR003677.

Nolan, B.T., Bayless, E.R., Green, C.T., Garb, S., Voss, F.D., Lampe, D.C., Barbash, J.E., Capel, P., and Bekins, B., 2005,

Evaluation of unsaturated-zone solute-transport models for studies of agricultural chemicals: U.S. Geological Survey Open-File Report 2005-1196, 21 p.

Perkins, K.S., 2005,

Aquifer recharge estimates based on unsaturated zone measurements, southern New Jersey: San Jose State University, M.S. thesis, 87 p.

Rousseau, J.P., Landa, E.R., Nimmo, J.R., Cecil, L.D., Knobel, L.L., Glynn, P.D., Kwicklis, E.M., Curtis, G.P., Stollenwerk, K.G., Anderson, S.R., Bartholomay, R.C., Bossong, C.R., and Orr, B.R., 2005,

Review of the transport of selected radionuclides in the interim risk assessment for the Radioactive Waste Management Complex, Waste Area Group 7 Operable Unit 7-13/14, Idaho National Engineering and Environmental Laboratory, Idaho: U.S. Geological Survey Scientific Investigations Report 2005-5026, 86 p.

Scanlon, B.R., Reedy, R.C., Stonestrom, D.A., Prudic, D.E., and Dennehy, K.F., 2005,

Impact of land use and land cover change on groundwater recharge and quality in the southwestern US: Global Change Biology, v. 11, no. 10, p. 1577-1593, doi:10.1111/j.1365-2486.2005.01026.x.

Scholl, M.A., Christenson, S.C., Cozzarelli, I.M., Ferree, D.M., and Jaeschke, J.B., 2005,

Recharge processes in an alluvial aquifer riparian zone, Norman Landfill, Norman Oklahoma, 1998-2000: U.S. Geological Survey Scientific Investigations Report 2004-5238, 54 p.

Shafroth, P.B., Cleverly, J.R., Dudley, T.L., Taylor, J.P., Van Riper, C., Weeks, E.P., and Stuart, J.N., 2005,

Control of Tamarix in the western United States--Implications for water salvage, wildlife use, and riparian restoration: Environmental Management, v. 35, p. 231-246, doi:10.1007/s00267-004-0099-5.

Šimůnek, J., and Nimmo, J.R., 2005,

Estimating soil hydraulic parameters from transient flow experiments in a centrifuge using parameter optimization technique: Water Resources Research, v. 41, doi:10.1029/2004WR003379.

Stearns, M., Tindall, J.A., Cronin, G., Friedel, M.J., and Bergquist, E., 2005,

Effects of coal-bed methane discharge waters on the vegetation and soil ecosystem in Powder River basin, Wyoming: Water, Air, and Soil Pollution, v. 168, p. 33-57, doi:10.1007/s11270-005-0588-z.

Tindall, J.A., Friedel, M.J., Szmajter, R.J., and Cuffin, S.M., 2005,

Part 1--Vadose-zone column studies of toluene (enhanced bioremediation) in a shallow unconfined aquifer: Water, Air, and Soil Pollution, v. 168, no. 1-4, p. 325-357, doi:10.1007/s11270-005-1486-0.

Tindall, J.A., Weeks, E.P., Friedel, M.J., and Nutt, A., 2005,

Part 2--A field study of enhanced remediation of toluene in the vadose zone using a nutrient solution: Water, Air, and Soil Pollution, v. 168, no. 1-4, p. 359-389, doi:10.1007/s11270-005-3584-4.

Walvoord, M.A., Striegl, R.G., Prudic, D.E., and Stonestrom, D.A., 2005,

CO₂ dynamics in the Amargosa Desert--Fluxes and isotopic speciation in a deep unsaturated zone: Water Resources Research, v. 41, no. 2, W02006, doi:10.1029/2004WR003599.

White, A.F., Schulz, M.S., Vivit, D.V., Blum, A.E., Stonestrom, D.A., and Harden, J., 2005,

Chemical weathering rates of a soil chronosequence on granitic alluvium--III. Hydrochemical evolution and contemporary solute fluxes: Geochimica et Cosmochimica Acta, v. 69, no. 8, p. 1975-1996, doi:doi:10.1016/j.gca.2004.10.003.

Winfield, K.A., 2005,

Development of property-transfer models for estimating the hydraulic properties of deep sediments at the Idaho National Engineering and Environmental Laboratory, Idahy: U.S. Geological Survey Scientific Investigations Report 2005-5114, 59 p.

Yi, C., Monson, R.K., Zhai, Z., Anderson, D.E., Lamb, B., Allwine, G., Turnipseed, A.A., and Burns, S.P., 2005,

Modeling and measuring the nocturnal drainage flow in a high-elevation, subalpine forest with complex terrain: Journal of Geophysical Research, v. 110, D22303, doi:10.1029/2005JD006282.

Abraham, J.D., and Lucius, J.E., 2004,

Direct current resistivity profiling to study distribution of water in the unsaturated zone near the Amargosa Desert Research Site, Nevada: U.S. Geological Survey Open-File Report 2004-1319, 16 p.

Andraski, B.J., Halford, K.J., and Michel, R.L., 2004,

Plume-scale testing of a simplified method for detecting tritium contamination in plants and soil, in Workshop on Long-term Performance Monitoring of Metals and Radionuclides in the Subsurface, Reston, Virginia, April 21-22, 2004: Florida State University, Tallahassee.

Dong, W., 2004,

Extraction of paleohydrology and paleoclimate proxies from vadose zones and paleolake records in the southwestern Great Basin: Las Vegas, University of Nevada, PhD. Dissertation, 180 p.

Engesgaard, P., Højberg, A.L., Hinsby, K., Jensen, K.H., Laier, T., Larsen, F., Busenberg, E., and Plummer, L.N., 2004,

Transport and time lag of chlorofluorocarbon gases in the unsaturated zone, Rabis Creek, Denmark: Vadose Zone Journal, v. 3, no. 4, p. 1249-1261.

Furlong, E.T., Kinney, C.A., Werner, S.L., and Cahill, J.D., 2004,

Presence and behavior of wastewater-derived pharmaceuticals in soil samples irrigated by reclaimed water, in Proceedings of the 4th International Conference on Pharmaceuticals and Endocrine Disrupting Chemicals in Water, Minneapolis, Minnesota, October 13-15, 2004: National Ground Water Association, p. 292-293, CD-ROM.

Heilweil, V.M., Solomon, D.K., Perkins, K.S., and Ellett, K.M., 2004,

Gas-partitioning tracer test to qualify trapped gas during recharge: Ground Water, v. 42, no. 4, p. 589-600, doi:10.1111/j.1745-6584.2004.tb02627.x.

Herkelrath, W.N., and Delin, G.N., 2004,

Water-soil interaction and solute transport at a crude-oil spill site, in Wanty, R.B., and Seal, R.R., II., eds., Water-Rock Interaction, Proceedings of the Eleventh International Symposium on Water-Rock Interaction, Saratoga Springs, New York, June 27-July 2, 2004: A.A. Balkema, v. 2, p. 1527-1530, ISBN:9789058096418.

Kinney, C.A., Mosier, A.R., Ferrer, I., Furlong, E.T., and Mandernack, K.W., 2004,

Effects of the fungicides mancozeb and chlorothalonil on fluxes of CO2, N2O, and CH4 in a fertilized Colorado grassland soil: Journal of Geophysical Research - Atmospheres, v. 109, p. DO5303, doi:10.1029/2003JD003655.

Kinney, C.A., Mosier, A.R., Ferrer, I., Furlong, E.T., and Mandernack, K.W., 2004,

Effects of the herbicides prosulfuron and metalachlor on fluxes of CO2, N2O, and CH4 in fertilized Colorado grassland soil: Journal of Geophysical Research - Atmospheres, v. 109, p. D05304, doi:10.1029/2003JD003656.

Landa, E.R., 2004,

Albert H. Munsell--A sense of color at the interface of art and science: Soil Science, v. 169, p. 83-89.

Landa, E.R., 2004,

Soil science and geology--Connects, disconnects and new opportunities in geoscience education: Journal of Geoscience Education, v. 52, p. 191-196.

McGuire, P.E., Moses, D., and Andraski, B.J., 2004,

Evapotranspiration cover for containment at U.S. Army Fort Carson landfill site, in 30th Environmental and Energy Symposium and Exhibition, Session Twelve, San Diego, California, April 5-8, 2004: National Defense Industrial Association, p. 24-page PowerPoint Presentation (PowerPoint file).

McMahon, P.B., Böhlke, J.K., and Christenson, S.C., 2004,

Geochemistry, radiocarbon ages, and paleorecharge conditions along a transect in the central High Plains aquifer, southwestern Kansas, USA: Applied Geochemistry, v. 19, no. 11, p. 1655-1686, doi:10.1016/j.apgeochem.2004.05.003.

Michalski, G., Böhlke, J.K., and Thiemens, M.H., 2004,

Long term atmospheric deposition as the source of nitrate and other sales in the Atacama Desert, Chile--New evidence from mass-independent oxygen isotopic compositions: Geochimica et Cosmochimica Acta, v. 68, no. 20, p. 4023-4038, doi:10.1016/j.gca.2004.04.009.

Moench, A.F., 2004,

Importance of the vadose zone in analysis of unconfined aquifer tests: Ground Water, v. 42, no. 2, p. 223-233.

Nimmo, J.R., 2004,

Aggregation - Physical aspects, in Hillel, D., ed., Encyclopedia of Soils in the Environment: London, Elsevier, p. 28-35.

Nimmo, J.R., 2004,

Porosity and pore-size distribution, in Hillel, D., ed., Encyclopedia of Soils in the Environment: London, Elsevier, p. 295-303.

Nimmo, J.R., Rousseau, J.P., Perkins, K.S., Stollenwerk, K.G., Glynn, P.G., Bartholomay, R.C., and Knobel, L.L., 2004,

Hydraulic and geochemical framework of the Idaho National Engineering and Environmental Laboratory vadose zone: Vadose Zone Journal, v. 3, p. 6-34.

Phillips, F.M., Walvoord, M.A., and Small, E.E., 2004,

Effects of environmental change on groundwater recharge in the Desert Southwest, in Hogan, J.F., Phillips, F.M., and Scanlon, B.R., eds., Groundwater recharge in a desert environment--The southwestern United States: Washington, D.C., American Geophysical Union, p. 273-294.

Rosenberry, D.O., Stannard, D.I., Winter, T.C., and Martinez, M.L., 2004,

Comparison of 13 equations for determining evapotranspiration from a prairie wetland, Cottonwood Lake area, North Dakota: Wetlands, v. 24, no. 3, p. 483-497.

Stannard, D.I., Rosenberry, D.O., Winter, T.C., and Parkhurst, R.S., 2004,

Estimates of fetch-induced errors in Bowen-ratio energy-budget measurements of evapotranspiration from a prairie wetland, Cottonwood Lake area, North Dakota, USA: Wetlands, v. 24, no. 3, p. 498-513.

Stonestrom, D.A., and Constantz, J., 2004,

Using temperature to study stream-ground water exchanges: U.S. Geological Survey Fact Sheet 2004-3010, 4 p.

Stonestrom, D.A., Prudic, D.E., Laczniak, R.J., and Akstin, K.C., 2004,

Tectonic, climatic, and land-use controls on ground-water recharge in an arid alluvial basin--Amargosa Desert, U.S.A., in Hogan, J.F., Phillips, F.M., and Scanlon, B.R., eds., Groundwater recharge in a desert environment--The southwestern United States: Washington, D.C., American Geophysical Union, p. 29-47.

Turnipseed, A.A., Anderson, D.E., Burns, S., Blanken, P.D., and Monson, R.K., 2004,

Airflows and turbulent flux measurements in mountainous terrain, Part 2--Mesoscale effects: Agricultural and Forest Meteorology, v. 125, p. 187-205, doi:10.1016/j.agrformet.2004.04.007.

Walvoord, M.A., and Phillips, F.M., 2004,

Identifying areas of basin-floor recharge in the Trans-Pecos region and the link to vegetation: Journal of Hydrology, v. 292, no. 1-4, p. 59-74, doi:10.1016/j.jhydrol.2003.12.029.

Walvoord, M.A., Phillips, F.M., Stonestrom, D.A., Evans, R.D., Hartsough, P.C., Newman, B.D., and Striegl, R.G., 2004,

Response to comment on "A reservoir of nitrate beneath desert soils": Science, v. 304, p. 51, doi:10.1126/science.1095033.

Walvoord, M.A., and Scanlon, B.R., 2004,

Hydrologic processes in deep vadose zones in interdrainage arid environments, in Hogan, J.F., Phillips, F.M., and Scanlon, B.R., eds., Groundwater recharge in a desert environment--The southwestern United States: Washington, D.C., American Geophysical Union, p. 15-28.

Walvoord, M.A., Stonestrom, D.A., Andraski, B.J., and Striegl, R.G., 2004,

Constraining the inferred paleohydrologic evolution of a deep unsaturated zone in the Amargosa Desert: Vadose Zone Journal, v. 3, p. 502-512.

Worrall, F., and Kolpin, D.W., 2004,

Aquifer vulnerability to pesticide pollution - combining soil, land-use and aquifer properties with molecular descriptors: Journal of Hydrology, v. 293, no. 1-4, p. 191-204, doi:10.1016/j.jhydrol.2004.01.013.

Andraski, B.J., Sandstrom, M.W., Michel, R.L., Radyk, J.C., Stonestrom, D.A., Johnson, M.J., and Mayers, C.J., 2003,

Simplified method for detecting tritium contamination in plants and soil: Journal of Environmental Quality, v. 32, no. 3, p. 988-995.

Baehr, A.L., Kauffman, L.J., Perkins, K., and Nolan, B.T., 2003,

Estimating spatial variability of recharge in southern New Jersey from unsaturated-zone measurements: U.S. Geological Survey Water-Resources Investigations Report 02-4288, 31 p.

Constantz, J., Tyler, S., and Kwicklis, E., 2003,

Temperature-profile methods for estimating percolation rates in arid environments: Vadose Zone Journal, v. 2, no. 1, p. 12-24, doi:10.2113/2.1.12.

Kampbell, D.H., Abbott, M.M., and Smith, M., 2003,

Nearby lake sediment quality and seedling tree survival on eroded oily waste/brine contaminated soil, in 2003 10th Annual International Petroleum Environmental Conference, Houston, Texas, November 11-14, 2003: IPEC.

Kampbell, D.H., An, Y.-J., Kirby, W.G., and Abbott, M.M., 2003,

Impact of oil production releases on soil chemical properties at the Osage-Skiatook Petroleum Environmental Research Project Site, in Sublette, K., ed., 9th International Petroleum Environmental Conference Special Session--Fate and Transport of Brine and Hydrocarbon Releases in Soils and Water, Northeast Oklahoma, Albuquerque, New Mexico, October 22-25, 2002: IPEC, p. 7 pages.

Kampbell, D.H., An, Y.-J., Smith, M.W., and Abbott, M.M., 2003,

Impact of oil production releases on some soil chemical properties at the OSPER sites, in Kharaka, Y.K., and Otton, J.K., eds., Environmental Impacts of Petroleum Production--Initial Results from the Osage-Skiatook Petroleum Environmental Research Sites, Osage County, Oklahoma: U.S. Geological Survey Water-Resources Investigations Report 03-4260, p. 105-112.

Leenheer, J.A., and Barber, L.B., 2003,

Hierarchal approach to organic matter characterization, in Schroeder, R.A., ed., Water-quality changes and organic-carbon characterization during recharge with recycled water at a research basin in Montebello Forebay, Los Angeles, California, 1991-1996 (Chapter 6): U.S. Geological Survey Water-Resources Investigations Report 03-4146, p. 57-60.

Leenheer, J.A., and Noyes, T.I., 2003,

Characterization of dissolved organic matter by infrared and ultraviolet/visible spectrometry (Chapter 9), in Schroeder, R.A., ed., Water-quality changes and organic-carbon characterization during recharge with recycled water at a research basin in Montebello Forebay, Los Angeles, California, 1991-1996: U.S. Geological Survey Water-Resources Investigations Report 03-4146, p. 89-101.

Mayers, C.J., 2003,

Modeling tritium transport through a deep unsaturated zone, Amargosa Desert Research Site, Nye County, Nevada: Reno, University of Nevada, M.S. thesis, 130 p.

Nimmo, J.R., 2003,

How fast does water flow in an unsaturated macropore? Evidence from field and lab experiments, in Alvarez-Benedi, J., and Marinero, P., eds., Estudios de la Zona No Saturada del Suelo, v. VI: Valladolid, Spain, Instituto Technologico de Castilla y Leon, p. 1-8.

Nimmo, J.R., Healy, R.W., and Stonestrom, D.A., 2003,

Aquifer recharge, in Stewart, B.A., and Howell, T.A., eds., Encyclopedia of Water Science: New York, Marcel Dekker, Inc., p. 22-25, ISBN:0-8247-0947-0.

Nolan, B.T., Baehr, A.L., and Kauffman, L.J., 2003,

Spatial variability of groundwater recharge and its effect on shallow groundwater quality in southern New Jersey: Vadose Zone Journal, v. 2, p. 677-691.

Perkins, K.S., 2003,

Measurement of sedimentary interbed hydraulic properties and their hydrologic influence near the Idaho Nuclear Technology and Engineering Center at the Idaho National Engineering and Environmental Laboratory: U.S. Geological Survey Water-Resources Investigations Report 2003-4048, 19 p.

Plumlee, G.S., and Ziegler, T.L., 2003,

The medical geochemistry of minerals, dusts, soils, and other earth materials (chapter 7), in Lollar, B.S., ed., Treatise on Geochemistry: Elsevier, v. 9 of 10 volumes, p. 1-61, ISBN:9780080437514.

Rice, C.A., Cathcart, J.D., Zielinski, R.A., and Otton, J.K., 2003,

Characterization of soils at an active oil production site--Effects of brine and hydrocarbon contamination, in Kharaka, Y.K., and Otton, J.K., eds., Environmental Impacts of Petroleum Production--Initial Results from the Osage-Skiatook Petroleum Environmental Research Sites, Osage County, Oklahoma: U.S. Geological Survey Water-Resources Investigations Report 03-4260, p. 137-150.

Rosenberry, D.O., Glaser, P.H., Siegel, D.I., and Weeks, E.P., 2003,

Use of hydraulic head to estimate volumetric gas content and ebullition flux in northern peatlands: Water Resources Research, v. 39, no. 3, p. 1066, doi:10.1029/2002WR001377.

Rostad, C.E., and Rathbun, R.E., 2003,

Distributions of halogenated organic compounds (Chapter 11), in Schroeder, R.A., ed., Water-quality changes and organic-carbon characterization during recharge with recycled water at a research basin in Montebello Forebay, Los Angeles, California, 1991-1996: U.S. Geological Survey Water-Resources Investigations Report 03-4146, p. 109-115.

Scanlon, B.R., Keese, K., Reedy, R.C., Šimůnek, J., and Andraski, B.J., 2003,

Variations in flow and transport in thick desert vadose zones in response to paleoclimatic forcing (0-90 kyr)--Field measurements, modeling, and uncertainties: Water Resources Research, v. 39, no. 7, p. 3-1 to 3-17, 2002WR001604, doi:10.1029/2002WR001604.

Stonestrom, D.A., and Blasch, K.W., 2003,

Determining temperature and thermal properties for heat-based studies of surface-water ground-water interactions, in Stonestrom, D.A., and Constantz, Jim, eds., Heat as a Tool for Studying the Movement of Ground Water Near Streams: U.S. Geological Survey Circular 1260, 73-80 p.

Stonestrom, D.A., Prudic, D.E., Laczniak, R.J., Akstin, K.C., Boyd, R.A., and Henkelman, K.K., 2003,

Estimates of deep percolation beneath native vegetation, irrigated fields, and the Amargosa-River Channel, Amargosa Desert, Nye County, Nevada: U.S. Geological Survey Open-File Report 03-104, 83 p.

Su, G.W., Nimmo, J.R., and Dragila, M.I., 2003,

Effect of isolated fractures on accelerated flow in unsaturated porous rock: Water Resources Research, v. 39, no. 12, p. 1-1 - 1-5, doi:10.1029/2002WR001691.

Turnipseed, A.A., Anderson, D.E., Blanken, P.D., Baugh, W.M., and Monson, R.K., 2003,

Airflows and turbulent flux measurements in mountainous terrain. Part 1--Canopy and local effects: Agricultural and Forest Meteorology, v. 119, no. 1-2, p. 1-21, doi:10.1016/S0168-1923(03)00136-9.

Walvoord, M.A., Phillips, F.M., Stonestrom, D.A., Evans, R.D., Hartsough, P.C., Newman, B.D., and Striegl, R.G., 2003,

A reservoir of nitrate beneath desert soils: Science, v. 302, no. 5647, p. 1021-1024, doi:10.1126/science.1086435.

Winfield, K.A., 2003,

Spatial variability of sedimentary interbed properties near the Idaho Nuclear Technology and Engineering Center at the Idaho National Engineering and Environmental Laboratory: U.S. Geological Survey Water-Resources Investigations Report 03-4142, 36 p.

Zielinski, R.A., Rice, C.A., and Otton, J.K., 2003,

Use of soil extracts to define the extent of brine-impacted soils and bedrock at oil production site "B", Osage-Skiatook Project, northeastern Oklahoma, in Sublette, K., ed., 9th International Petroleum Environmental Conference Special Session--Fate and Transport of Brine and Hydrocarbon Releases in Soils and Water, Northeast Oklahoma, Albuquerque, New Mexico, October 22-25, 2002: IPEC, p. 12 pages.

Zielinski, R.A., Rice, C.A., and Otton, J.K., 2003,

Use of soil extracts to define the extent of brine-impacted soils and bedrock at the Osage-Skiatook petroleum environmental research "B" site, northeastern Oklahoma, in Kharaka, Y.K., and Otton, J.K., eds., Environmental Impacts of Petroleum Production--Initial Results from the Osage-Skiatook Petroleum Environmental Research Sites, Osage County, Oklahoma: U.S. Geological Survey Water-Resources Investigations Report 03-4260, p. 127-135.

Andraski, B.J., and Scanlon, B.R., 2002,

Thermocouple psychrometry, in Dane, J.H., and Topp, G.C., eds., Methods of Soil Analysis, Part 4, Physical Methods: Madison, Wisconsin, Soil Science Society of America, p. 609-642.

Baker, R.J., Best, E.W., and Baehr, A.L., 2002,

Used motor oil as a source of MTBE, TAME, and BTEX to ground water: Ground Water Monitoring and Remediation, v. 22, no. 4, p. 46-51.

Bisdorf, R.J., 2002,

Schlumberger soundings at the Amargosa Desert Research Site, Nevada: U.S. Geological Survey Open-File Report 02-0140.

Charlton, S.R., and Parkhurst, D.L., 2002,

PHREEQCI--A graphical user interface to the geochemical model PHREEQC: U.S. Geological Survey Fact Sheet 031-02, 2 p.

Constantz, J., Jasperse, J., Seymour, D., and Su, G., 2002,

Use of temperature to estimate streambed conductance, Russian River, California, in Kenny, J.F., ed., Ground water/surface water interactions, AWRA 2002 Summer Specialty Conference Proceedings, Keystone, Colorado, July 1-3, 2002: American Water Resources Association, p. 595-600.

Cox, M., Rosenberry, D., Su, G., Conlon, T., Lee, K., and Constantz, J., 2002,

Comparison of methods to estimate streambed seepage rates, in Kenny, J.F., ed., Ground Water/Surface Water Interactions, AWRA 2002 Summer Specialty Conference Proceedings, Keystone, Colorado, July 1-3, 2002: American Water Resources Association, p. 519-523.

Delin, G.N., and Landon, M.K., 2002,

Effects of surface run-off on the transport of agricultural chemicals to ground water in a sandplain setting: The Science of the Total Environment, v. 295, no. 1-3, p. 143-155, doi:10.1016/S0048-9697(02)00071-2.

Delin, G.N., and Landon, M.K., 2002,

Effects of topography on the transport of agricultural chemicals to groundwater in a sand-plain setting: Hydrogeology Journal, v. 10, no. 4, p. 443-454, doi:10.1007/s10040-002-0208-6.

Gee, G.W., Ward, A.L., Caldwell, T.G., and Ritter, J.C., 2002,

A vadose zone water fluxmeter with divergence control: Water Resources Research, v. 38, no. 8, p. 16-1 to 16-7, doi:10.1029/2001WR000816.

Haverkamp, R., Nimmo, J.R., and Reggiani, P., 2002,

Property-transfer models, in Dane, J.H., and Topp, G.C., eds., Methods of Soil Analysis, Part 4, Physical Methods: Madison, Wisconsin, Soil Science Society of America, p. 759-761.

Healy, R.W., and Cook, P.G., 2002,

Using groundwater levels to estimate recharge: Hydrogeology Journal, v. 10, no. 1, p. 91-109, doi:10.1007/s10040-001-0178-0.

Johnson, M.J., Mayers, C.J., and Andraski, B.J., 2002,

Selected micrometeorological and soil-moisture data at Amargosa Desert Research Site in Nye County near Beatty, Nevada, 1998-2000: U.S. Geological Survey Open-File Report 02-348.

Nimmo, J.R., 2002,

Guidelines for method selection (water retention and storage), in Dane, J.H., and Topp, G.C., eds., Methods of Soil Analysis, Part 4, Physical Methods: Madison, Wisconsin, Soil Science Society of America, p. 716-720.

Nimmo, J.R., 2002,

Property transfer from particle and aggregate size to water retention [property-transfer models], in Dane, J.H., and Topp, G.C., eds., Methods of Soil Analysis, Part 4, Physical Methods: Madison, Wisconsin, Soil Science Society of America, p. 777-782.

Nimmo, J.R., and Perkins, K.J., 2002,

Aggregate stability and size distribution, in Dane, J.H., and Topp, G.C., eds., Methods of Soil Analysis, Part 4, Physical Methods: Madison, Wisconsin, Soil Science Society of America, p. 317-328.

Nimmo, J.R., Perkins, K.J., and Lewis, A.M., 2002,

Steady-state centrifuge [simultaneous determination of water transmission and retention properties--direct methods--laboratory], in Dane, J.H., and Topp, G.C., eds., Methods of Soil Analysis, Part 4, Physical Methods: Madison, Wisconsin, Soil Science Society of America, p. 903-916.

Nimmo, J.R., and Winfield, K.A., 2002,

Miscellaneous methods [water retention and storage], in Dane, J.H., and Topp, G.C., eds., Methods of Soil Analysis, Part 4, Physical Methods: Madison, Wisconsin, Soil Science Society of America, p. 710-714, 717-720.

Scanlon, B.R., Andraski, B.J., and Bilskie, J., 2002,

Miscellaneous methods for measuring matric or water potential, in Dane, J.H., and Topp, G.C., eds., Methods of Soil Analysis, Part 4, Physical Methods: Madison, Wisconsin, Soil Science Society of America, p. 643-670.

Scanlon, B.R., Healy, R.W., and Cook, P.G., 2002,

Choosing appropriate techniques for quantifying groundwater recharge: Hydrogeology Journal, v. 10, no. 1, p. 18-39, doi:10.1007/s10040-001-0176-2.

Thorstenson, D.C., and Parkhurst, D.L., 2002,

Calculation of individual isotope equilibrium constants for implementation in geochemical models: U.S. Geological Survey Water-Resources Investigations Report 02-4172, 129 p.

Walvoord, M.A., Phillips, F.M., Tyler, S.W., and Hartsough, P.C., 2002,

Deep arid system hydrodynamics--2, Application to paleohydrologic reconstruction using vadose zone profiles from the northern Mojave Desert: Water Resources Research, v. 38, no. 12, p. 27-1 to 27-12, 2001WR000825, doi:10.1029/2001WR000825.

Walvoord, M.A., Plummer, M.A., Phillips, F.M., and Wolfsberg, A.V., 2002,

Deep arid system hydrodynamics--1, Equilibrium states and response times in thick desert vadose zones: Water Resources Research, v. 38, no. 12, p. 44-1 to 44-15, 2001WR000824, doi:10.1029/2001WR000824.

Winfield, K.A., and Nimmo, J.R., 2002,

Controlled liquid-volume [water retention and storage], in Dane, J.H., and Topp, G.C., eds., Methods of Soil Analysis, Part 4, Physical Methods: Madison, Wisconsin, Soil Science Society of America, p. 698-703, 717-720.

Aga, D.S., and Thurman, E.M., 2001,

Formation and transport of the sulfonic acid metabolites of alachlor and metolachlor in soil: Environmental Science and Technology, v. 35, no. 12, p. 2455-2460, doi:10.1021/es991264s.

Anderson, D.E., and Farrar, C.D., 2001,

Eddy covariance measurements of CO2 flux to the atmosphere from an area of high volcanogenic emissions - Mammoth Mountain, California: Chemical Geology, v. 177, p. 31-42, doi:10.1016/S0009-2541(00)00380-6.

Baehr, A.L., Charles, E.G., and Baker, R.J., 2001,

Methyl tert-butyl ether degradation in the unsaturated zone and the relation between MTBE in the atmosphere and shallow groundwater: Water Resources Research, v. 37, no. 2, p. 223-233, 2000WR900292, doi:10.1029/2000WR900292.

Brantley, S.L., Liermann, L., and Bullen, T.D., 2001,

Fractionation of Fe isotopes by soil microbes and organic acids: Geology, v. 29, no. 6, p. 535-538, doi:10.1130/0091-7613(2001)029<0535:FOFIBS>2.0.CO;2.

Chiou, C.T., Sheng, G., and Manes, M., 2001,

A partition-limited model for the plant uptake of organic contaminants from soil and water: Environmental Science and Technology, v. 35, no. 7, p. 1437-1444, doi:10.1021/es0017561.

Constantz, J.E., Stonestrom, D.A., Stewart, A.E., Niswonger, R.G., and Smith, T.R., 2001,

Analysis of streambed temperatures in ephemeral channels to determine streamflow frequency and duration: Water Resources Research, v. 37, no. 2, p. 317-328, 2000WR900271, doi:10.1029/2000WR900271.

Evans, W.C., Sorey, M.L., Kennedy, B.M., Stonestrom, D.A., Rogie, J.D., and Shuster, D.I., 2001,

High CO2 emissions through porous media--Transport mechanisms and implications for flux measurement and fractionation: Chemical Geology, v. 177, no. 1-2, p. 15-29, doi:10.1016/S0009-2541(00)00379-X.

Herkelrath, W.N., and Delin, G.N., 2001,

Long-term monitoring of soil-moisture in a harsh climate using reflectometer and TDR probes, in Dowding, C.H., ed., Proceedings of the Second International Symposium and Workshop on Time Domain Reflectometry for Innovative Geotechnical Applications, Evanston, Illinois, September 5-7, 2001: Northwestern University, Infrastructure Technology Institute, p. 262-272.

Hsieh, P.A., and others, a., 2001,

Conceptual models of flow and transport in the fractured vadose zone: Washington, D.C., National Academy Press, p.

O'Connor, K.M., 2001,

Use of TDR to monitor changes in ground water level and crude oil thickness, in Dowding, C.H., ed., Proceedings of the Second International Symposium and Workshop on Time Domain Reflectometry for Innovative Geotechnical Applications, Evanston, Illinois, September 5-7, 2001: Northwestern University, Infrastructure Technology Institute, p. 409-416.

Andraski, B.J., and Jacobson, E.A., 2000,

Testing a full-range soil-water retention function in modeling water potential and temperature: Water Resources Research, v. 36, no. 10, p. 3081-3089, 2000WR900193, doi:10.1029/2000WR900193.

Baker, R.J., Baehr, A.L., and Lahvis, M.A., 2000,

Estimation of hydrocarbon biodegradation rates in gasoline-contaminated sediment from measured respiration rates: Journal of Contaminant Hydrology, v. 41, no. 1-2, p. 175-192, doi:10.1016/S0169-7722(99)00063-7.

Chattopadhyay, S., and Puls, R.W., 2000,

Forces dictating colloidal interactions between viruses and soil: Chemosphere, v. 41, no. 8, p. 13-20.

Chiou, C.T., and Kile, D.E., 2000,

Contaminant sorption by soil and bed sediment--Is there a difference?: U.S. Geological Survey Fact Sheet 087-00, 4 p.

Chiou, C.T., Kile, D.E., Rutherford, D.W., Sheng, G., and Boyd, S.A., 2000,

Sorption of selected organic compounds from water to a peat soil and its humic-acid and humin fractions: Environmental Science and Technology, v. 34, no. 7, p. 1254-1258, doi:10.1021/es990261c.

Delin, G.N., Healy, R.W., Landon, M.K., and Böhlke, J.K., 2000,

Effects of topography and soil properties on recharge at two sites in an agricultural field: Journal of the American Water Resources Association, v. 36, no. 6, p. 1401-1416, AWRA Paper Number 99095, doi:10.1111/j.1752-1688.2000.tb05735.x.

Delin, G.N., Healy, R.W., Landon, M.K., and Böhlke, J.K., 2000,

Effects of topography and soil properties on recharge at two sites in an agricultural field: Journal of the American Water Resources Association, v. 36, no. 6, p. 1401-1416.

Healy, R.W., and Russell, T.F., 2000,

Treatment of internal sources in the finite-volume ELLAM, in Proceedings of the XEEI International Conference on Computational Methods in Water Resources, Calgary, Alberta, June 25-29, 2000: p. 619-622.

Hsieh, P.A., Wingle, W., and Healy, R.W., 2000,

VS2DTI - A graphical software package for simulating fluid flow and solute or energy transport in variably saturated porous media: U.S. Geological Survey Water-Resources Investigations Report 99-4130, 16 p.

Hutchinson, G.L., Livingston, G.P., Healy, R.W., and Striegl, R.G., 2000,

Chamber measurement of surface-atmosphere trace gas exchange--Numerical evaluation of dependence on soil interfacial layer, and source/sink products: Journal of Geophysical Research, v. 105, no. D7, p. 8865-8875.

Izbicki, J.A., Clark, D.A., Pimental, M.I., Land, M., Radyk, J., and Michel, R.L., 2000,

Data from a thick unsaturated zone underlying Oro Grande and Sheep Creek washes in the western part of the Mojave Desert, near Victorville, San Bernadino County, California: U.S. Geological Survey Open-File Report 00-262.

Izbicki, J.A., Radyk, J., and Michel, R.L., 2000,

Water movement through a thick unsaturated zone underlying an intermittent stream in the western Mojave Desert, Southern California, USA: Journal of Hydrology, v. 238, no. 3-4, p. 194-217.

Lahvis, M.A., and Rehmann, L.C., 2000,

Simulation of transport of methyl tert-butyl ether (MTBE) to groundwater from small volume releases of gasoline in the vadose zone: American Petroleum Institute Soil and Groundwater Research Bulletin 10, 8 p.

Lee, J.-F., Liao, P.-M., Kuo, C.-C., Yang, H.-T., and Chiou, C.T., 2000,

Influence of a nonionic surfactant (Triton X-100) on contaminant distribution between water and several soil solids: Journal of Colloid and Interface Science, v. 229, no. 2, p. 445-452, doi:10.1006/jcis.2000.7039.

Niswonger, J., and Rupp, J., 2000,

Monte Carlo analysis of streambed water flux rates, in Proceedings of the Riparian Ecology Management in Multi-land Use Watersheds, Portland, Oregon: American Water Resources Association, p. 161-166.

Niswonger, R., and Constantz, J., 2000,

Determination of streamflow loss to estimate mountain-front recharge at Bear Canyon, New Mexico, in Cole, J.C., ed., U.S. Geological Survey Middle Rio Grande Basin Study--Proceedings of the Fourth Annual Workshop, Albuquerque, New Mexico, February 15-16, 2000: U.S. Geological Survey Open-File Report 00-488, p. 38-40.

O'Connor, K.M., Poulter, D.A., and Znidarcic, D., 2000,

Tailings management using TDR technology, in Shackelford, C., ed., Tailings and Mine Waste '00, Proceedings of the Seventh International Conference on Tailings and Mine Waste, Fort Collins, Colorado, January 2000: Rotterdam, Balkema, p. 451-460.

Parkhurst, D.L., Thorstenson, D.C., and Kipp, K.L., 2000,

Calculating carbon-isotope compositions in an unsaturated zone with seasonally varying CO2 production, in Wang, Y., ed., Proceedings of the International Symposium on Hydrogeology and the Environment, Wuhan, Peoples Republic of China, October 17-21, 2000: p. 220-224.

Russell, T.F., and Healy, R.W., 2000,

Analytical tracking along streamlines in temporally linear Raviart-Thomas velocity fields, in Proceedings of the XIII International Conference on Computational Methods in Water Resources, Calgary, Alberta, June 25-29, 2000: p. 631-638.

Stewart, A.E., and Constantz, J., 2000,

Determination of streamflow patterns to estimate stream loss along Abo Arryo, New Mexico, in Cole, J.C., ed., U.S. Geological Survey Middle Rio Grande Basin Study--Proceedings of the Fourth Annual Workshop, Albuquerque, New Mexico, February 15-16, 2000: U.S. Geological Survey Open-File Report 00-488, p. 35-37.

Thomas, C.L., Stewart, A.E., and Constantz, J., 2000,

Determination of infiltration and percolation rates along a reach of the Santa Fe River near La Bajada, New Mexico: U.S. Geological Survey Water-Resources Investigations Report 2000-4141, 31 p.

Tumbusch, M.L., and Prudic, D.E., 2000,

Temperatures and water potentials in shallow unsaturated alluvium next to a burial site for low-level radioactive waste, Amargosa Desert, Nye County, Nevada, 1987-96: U.S. Geological Survey Water-Resources Investigations Report 99-4261, 37 p.

Walton-Day, K., Healy, R.W., Maestas, F.B., and Ranalli, A.J., 2000,

Effects of remediation on geochemistry and hydrology of the unsaturated zone of fluvial tailings deposits in the floodplain of the upper Arkansas River, Colorado, in Proceedings from the Fifth International Conference on Acid Rock Drainage, Denver, Colorado, May 21-24, 2000: Littleton, Colo., Society for Mining, Metallurgy, and Exploration, p. 1443-1450.

Walton-Day, K., Rossi, F.J., Gerner, L.J., Evans, J.B., Yager, T.J., Ranville, J.F., and Smith, K.S., 2000,

Effects of fluvial tailings deposits on soils and surface- and ground-water quality, and implications for remediation--Upper Arkansas River, Colorado, 1992-1996: U.S. Geological Survey Water-Resources Investigations Report 99-4273, 100 p.

Wilkison, D.H., Blevins, D.W., and Silva, S.R., 2000,

Use of isotopically labeled fertilizer to trace nitrogen fertilizer contributions to surface, soil, and ground water: Journal of Environmental Hydrology, v. 8, no. 6, p. 1-16 (Abstract).

Wood, W.W., 2000,

Ground-water recharge in the Southern High Plains of Texas and New Mexico: U.S. Geological Survey Fact Sheet 127-99.

Anderson, D.E., 1999,

Solutions to questions (chapter 9), in Tindall, J.A., and Kunkel, J.R., eds., Instructor's Solution Manual for Unsaturated Zone Hydrology for Scientists and Engineers: Englewood Cliffs, New Jersey, Prentice Hall, p. 40-47.

Anderson, D.E., 1999,

Transport of heat and gas in soil and at the surface, in Tindall, J.A., and Kunkel, J.R., eds., Unsaturated Zone Hydrology for Scientists and Engineers (chapter 9): Englewood Cliffs, New Jersey, Prentice-Hall, p. 200-272.

Anderson, D.E., Striegl, R.G., Stannard, D.I., Michmerhuizen, C.M., McConnaughey, T.A., and LaBaugh, J.W., 1999,

Estimating lake-atmosphere CO2 exchange: Limnology and Oceanography, v. 44, no. 4, p. 988-1001.

Andraski, B.J., and Stonestrom, D.A., 1999,

Overview of research on water, gas, and radionuclide transport at the Amargosa Desert Research Site, Nevada, in Morganwalp, D.W., and Buxton, H.T., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the Technical Meeting, Charleston, South Carolina, March 8-12, 1999--Volume 3 of 3--Subsurface Contamination from Point Sources: U.S. Geological Survey Water-Resources Investigations Report 99-4018C, p. 459-465.

Baehr, A.L., Stackelberg, P.E., and Baker, R.J., 1999,

Evaluation of the atmosphere as a source of volatile organic compounds in shallow groundwater: Water Resources Research, v. 35, no. 1, p. 127-136, 1998WR900030, doi:10.1029/1998WR900030.

Bartolino, J., and Niswonger, R., 1999,

Temperature profiles of the aquifer system underlying the Rio Grande, New Mexico, in Bartolino, J.R., ed., U.S. Geological Survey middle Rio Grande Basin study; Proceedings of the third annual workshop, Albuquerque, New Mexico, February 24-25, 1999: U.S. Geological Survey Open-File Report 99-203, p. 66-67.

Bartolino, J.R., and Niswonger, R., 1999,

Numerical simulation of vertical ground-water flux of the Rio Grande from ground-water temperature profiles, Central New Mexico: U.S. Geological Survey Water-Resources Investigations Report 99-4212, 34 p.

Brooks, P.D., McKnight, D.M., and Bencala, K.E., 1999,

The relationship between soil heterotrophic activity, soil dissolved organic carbon (DOC) leachate, and catchment-scale DOC export in headwater catchments: Water Resources Research, v. 35, no. 6, p. 1895-1902, 1998WR900125, doi:10.1029/1998WR900125.

Burkart, M.R., Kolpin, D.W., Jaquis, R.J., and Cole, K.J., 1999,

Agrichemicals in ground water of the Midwestern USA--Relations to soil characteristics: Journal of Environmental Quality, v. 28, no. 6, p. 1908-1915.

Chattopadhyay, S., and Puls, R.W., 1999,

Fate of pathogenic microorganisms in soil, in Alleman, B.C., and Leeson, A., eds., Phytoremediation and Innovative Strategies for Specialized Remedial Applications--Proceedings of the Fifth International In-Situ and On-Site Bioremediation Symposium, San Diego, Calif., April 19--22, 1999: Columbus, Ohio, Battelle Press, p. 163-168, ISBN:1-57477-079-9 (Contact The Conference Group Inc. for information on the availability of the proceedings.).

Constantz, J., 1999,

A process for simultaneous solar distillation and drip irrigation: U.S. Geological Survey Fact Sheet 144-99, 2 p.

Constantz, J., Niswonger, R., and Stewart, A.E., 1999,

The use of heat as a tracer to estimate recharge beneath streams and artificial recharge ponds, in Bartlett, R.D., ed., Artificial Recharge of Groundwater: American Society of Civil Engineers, p. 193-203.

Delin, G.N., and Herkelrath, W.N., 1999,

Long-term monitoring of unsaturated-zone properties to estimate recharge at the Bemidji crude-oil spill site, in Morganwalp, D.W., and Buxton, H.T., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the Technical Meeting, Charleston, South Carolina, March 8-12, 1999--Volume 3 of 3--Subsurface Contamination from Point Sources: U.S. Geological Survey Water-Resources Investigations Report 99-4018C, p. 143-151.

Goode, D.J., Busenberg, E., Plummer, L.N., Shapiro, A.M., and Vroblesky, D.A., 1999,

CFC's in the unsaturated zone and in shallow ground water at Mirror Lake, New Hampshire, in Morganwalp, D.W., and Buxton, H.T., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the Technical Meeting, Charleston, South Carolina, March 8-12, 1999--Volume 3 of 3--Subsurface Contamination from Point Sources: U.S. Geological Survey Water-Resources Investigations Report 99-4018C, p. 809-820.

Healy, R.W., Striegl, R.G., Michel, R.L., Prudic, D.E., and Andraski, B.J., 1999,

Tritium in water vapor in the shallow unsaturated zone at the Amargosa Desert Research site, in Morganwalp, D.W., and Buxton, H.T., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the Technical Meeting, Charleston, South Carolina, March 8-12, 1999--Volume 3 of 3--Subsurface Contamination from Point Sources: U.S. Geological Survey Water-Resources Investigations Report 99-4018C, p. 485-490.

Hornecker, M.M., 1999,

Automated soil moisture observations and infiltration modeling at the closed Norman, Oklahoma Landfill: Norman, University of Oklahoma, School of Civil Engineering and Environmental Science, unpublished Masters thesis, 165 p.

Katual, G., Hsieh, C., Bowling, D., Clark, K., Shurpali, N., Turnipseed, A., Albertson, J.T., K., Hollinger, D., Evans, B., Orff, B., Anderson, D.W., Ellsworth, D., Oren, R., and Vogel, C., 1999,

Spatial variability of turbulent fluxes in the roughness sublayer of an even-aged pine forest: Boundary-Layer Meteorology, v. 93, p. 1-28, doi:10.1023/A:1002079602069.

Kile, D.E., Wershaw, R.L., and Chiou, C.T., 1999,

Correlation of soil and sediment organic matter polarity to aqueous sorption of nonionic compounds: Environmental Science and Technology, v. 33, no. 12, p. 2053-2056, doi:10.1021/es980816o.

Lahvis, M.A., and Baehr, A.L., 1999,

Transport of methyl tert-butyl ether (MTBE) and hydrocarbons to ground water from gasoline spills in the unsaturated zone, in Morganwalp, D.W., and Buxton, H.T., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the Technical Meeting, Charleston, South Carolina, March 8-12, 1999--Volume 3 of 3--Subsurface Contamination from Point Sources: U.S. Geological Survey Water-Resources Investigations Report 99-4018C, p. 113-120.

Lahvis, M.A., Baehr, A.L., and Baker, R.J., 1999,

Quantification of aerobic biodegradation and volatilization rates of gasoline hydrocarbons near the water table under natural attenuation conditions: Water Resources Research, v. 35, no. 3, p. 753-765, 1998WR900087, doi:10.1029/1998WR900087.

Lahvis, M.A., Baker, R.J., and Baehr, A.L., 1999,

Mass transport of methyl tert-butyl ether (MTBE) across the water table and significance for natural-attenuation remediation at a gasoline spill site in Beaufort, South Carolina, in Morganwalp, D.W., and Buxton, H.T., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the Technical Meeting, Charleston, South Carolina, March 8-12, 1999--Volume 3 of 3--Subsurface Contamination from Point Sources: U.S. Geological Survey Water-Resources Investigations Report 99-4018C, p. 75-85.

Lahvis, M.A., and Rehmann, L.C., 1999,

Simulation of methyl tert-butyl ether (MTBE) transport to ground water from immobile sources of gasoline in the vadose zone, in Stanley, A., ed., Proceedings of the 2000 Petroleum Hydrocarbons and Organic Chemicals in Ground Water--Prevention, Detection, and Remediation, Houston, Texas, November 17-19, 1999: Westerville, Ohio, National Ground Water Association, p. 247-259.

Landon, M.K., Delin, G.N., Komor, S.C., and Regan, C.P., 1999,

Comparison of the stable-isotopic composition of soil water collected from suction lysimeters, wick samplers, and cores in a sandy unsaturated zone: Journal of Hydrology, v. 224, no. 1-2, p. 45-54, doi:10.1016/S0022-1694(99)00120-1.

Lerch, R.N., Thurman, E.M., and Blanchard, P.E., 1999,

Hydroxyatrazine in soils and sediments: Environmental Toxicology and Chemistry, v. 18, no. 10, p. 2161-2168, doi:10.1897/1551-5028(1999)018<2161:HISAS>2.3.CO;2.

Nimmo, J.R., 1999,

Predicting soil-water retention and hydraulic conductivity from textural and structural information, in van Genuchten, J.T., Leij, F., and Wu, L., eds., Characterization and measurement of the hydraulic properties of unsaturated porous media, Part 2: University of California Press, p. 923-930.

Niswonger, R., and Constantz, J., 1999,

Using heat as a tracer to estimate mountain-front recharge in Bear Canyon, New Mexico, in Bartolino, J.R., ed., U.S. Geological Survey middle Rio Grande basin study; proceedings of the third annual workshop, Albuquerque, New Mexico, February 24-25, 1999: U.S. Geological Survey Open-File Report 99-203, p. 69-70.

O'Connor, K.M., and Dowding, C.H., 1999,

GeoMeasurements by pulsing TDR cables and probes: Boca Raton, CRC Press, 402 p.

Prudic, D.E., Striegl, R.G., Healy, R.W., Michel, R.L., and Haas, H., 1999,

Tritium and 14C concentrations in unsaturated-zone gases at test hole UZB-2, Amargosa Desert Research Site, 1994-98, in Morganwalp, D.W., and Buxton, H.T., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the Technical Meeting, Charleston, South Carolina, March 8-12, 1999--Volume 3 of 3--Subsurface Contamination from Point Sources: U.S. Geological Survey Water-Resources Investigations Report 99-4018C, p. 475-483.

Riggs, A.C., Striegl, R.G., and Maestas, F.B., 1999,

Soil respiration at the Amargosa Desert Research site, in Morganwalp, D.W., and Buxton, H.T., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the Technical Meeting, Charleston, South Carolina, March 8-12, 1999--Volume 3 of 3--Subsurface Contamination from Point Sources: U.S. Geological Survey Water-Resources Investigations Report 99-4018C, p. 491-497.

Smith, J.A., Katchmark, W., Choi, J.-W., and Tillman, F.D., Jr, 1999,

Unsaturated-zone air flow at Picatinny Arsenal, New Jersey--Implications for natural remediation of the trichloroethylene-contaminated aquifer, in Morganwalp, D.W., and Buxton, H.T., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the Technical Meeting, Charleston, South Carolina, March 8-12, 1999--Volume 3 of 3--Subsurface Contamination from Point Sources: U.S. Geological Survey Water-Resources Investigations Report 99-4018C, p. 625-633.

Stewart, A.E., and Constantz, J., 1999,

Developing a long-term water balance for Abo Arroyo, New Mexico, in Bartolino, J.R., ed., U.S. Geological Survey middle Rio Grande basin study; proceedings of the third annual workshop, Albuquerque, New Mexico, February 24-25, 1999: U.S. Geological Survey Open-File Report 99-203, p. 73-74.

Stonestrom, D.A., Prudic, D.E., and Striegl, R.G., 1999,

Isotopic composition of water in a deep unsaturated zone beside a radioactive-waste disposal area near Beatty, Nevada, in Morganwalp, D.W., and Buxton, H.T., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the Technical Meeting, Charleston, South Carolina, March 8-12, 1999--Volume 3 of 3--Subsurface Contamination from Point Sources: U.S. Geological Survey Water-Resources Investigations Report 99-4018C, p. 467-473.

Thomas, C.L., Stewart, A.E., and Constantz, J., 1999,

Comparison of methods to determine infiltration and percolation rates along a reach of the Santa Fe River near La Bajada, New Mexico, in Bartolino, J.R., ed., U.S. Geological Survey middle Rio Grande basin study; proceedings of the third annual workshop, Albuquerque, New Mexico, February 24-25, 1999: U.S. Geological Survey Open-File Report 99-203, p. 75-76.

Tindall, J.A., and Kunkel, J.R., 1999,

Instructor's solution manual for unsaturated zone hydrology for scientists and engineers: Englewood Cliff, New Jersey, 160 p.

Tindall, J.A., and Kunkel, J.R., 1999,

Unsaturated zone hydrology for environmental scientists and engineers: Englewood Cliff, New Jersey, Prentice-Hall, 625 p.

Wilkison, D.H., and Blevins, D.W., 1999,

Observations on preferential flow and horizontal transport of nitrogen fertilizer in the unsaturated zone: Journal of Environmental Quality, v. 28, no. 5, p. 1568-1580.

Wood, W., 1999,

Comment on "Field study of spatial variability in unsaturated flow beneath and adjacent to playas" by Bridget R. Scanlon and Richard S. Goldsmith: Water Resources Research, v. 35, no. 2, p. 601-601, 1998WR900072, doi:10.1029/1998WR900072.

Wood, W.W., 1999,

Use and misuse of the chloride-mas balance method in estimating ground water recharge: Ground Water, v. 37, no. 1, p. 2-3.

Andraski, B.J., and Stonestrom, D.A., 1998,

Hydrogeologic studies at the USGS Amargosa Desert Research Site, in Taylor, E.M., ed., Quaternary geology of the Yucca Mountain area, southern Nevada, Annual Meeting, Friends of the Pleistocene, Pacific Cell, October 1998, Field Trip Guide: Friends of the Pleistocene, p. 210-216.

Chiou, C.T., 1998,

Soil sorption of organic pollutants and pesticides, in Meyers, R.A., ed., Encyclopedia of Environmental Analysis and Remediation: New York, John Wiley, p. 4517-4554.

Chiou, C.T., and Kile, D.E., 1998,

Deviations from sorption linearity on soils of polar and nonpolar organic compounds at low relative concentrations: Environmental Science and Technology, v. 32, no. 3, p. 338-343, doi:10.1021/es970608g.

Chiou, C.T., McGroddy, S.E., and Kile, D.E., 1998,

Partition characteristics of polycyclic aromatic hydrocarbons on soils and sediments: Environmental Science and Technology, v. 32, no. 2, p. 264-269, doi:10.1021/es970614c.

Constantz, J., 1998,

Interaction between stream temperature, streamflow, and groundwater exchanges in alpine streams: Water Resources Research, v. 34, no. 7, p. 1609-1615, 98WR00998, doi:10.1029/98WR00998.

Garges, J.A., and Baehr, A.L., 1998,

Type curves to determine the relative importance of advection and dispersion for solute and vapor transport: Ground Water, v. 36, no. 6, p. 959-965.

Gossard, C.M., 1998,

Evapotranspiration estimates for the Norman, Oklahoma landfill: Helena, Mont,, Carroll College, Department of Mathematics, Engineering, Physics, Computer Science, unpublished honors thesis, 51 p.

Gossard, C.M., Hornecker, M.M., and Kolar, R.L., 1998,

Evapotranspiration estimates for the closed Norman Landfill, in Morel-Seytoux, H.J., ed., 18th AGU Hydrology Days, Proceedings, Fort Collins, Colo., March 30-April 2, 1998: p. 111-120.

Healy, R.W., and Russell, T.F., 1998,

Solutions of the advection-dispersion equation in two dimensions by a finite volume Eularian-Lagrangian localized adjoint method: Advances in Water Resources, v. 21, no. 1, p. 11-26.

Hornecker, M.M., and Kolar, R.L., 1998,

Automated soil moisture observations and infiltration modeling at the closed Norman, Oklahoma landfill, in Morel-Seytoux, H.J., ed., 18th AGU Hydrology Days, Proceedings, Fort Collins, Colo., March 30-April 2, 1998: p. 141-152.

Izbicki, J.A., Michel, R.L., and Martin, P., 1998,

Chloride and tritium concentrations in a thick unsaturated zone underlying an intermittent stream in the Mojave Desert, Southern California, USA, in Van Brahana, J., and others, eds., Gambling with Groundwater, p. 81-88.

Johnston, C.T., Cook, P.G., Frape, S.K., Plummer, L.N., Busenberg, E., and Blackport, R.J., 1998,

Ground water age and nitrate distribution within a glacial aquifer beneath a thick unsaturated zone: Ground Water, v. 36, no. 1, p. 171-180.

Kelly, B.P., and Pomes, M.L., 1998,

Preferential flow and transport of nitrate and bromide through a claypan soil: Ground Water, v. 36, no. 3, p. 484-494, doi:doi:10.1111/j.1745-6584.1998.tb02820.x.

Lahvis, M.A., and Baehr, A.L., 1998,

Simulating transport of volatile organic compounds in the unsaturated zone using the computer model R-UNSAT: U.S. Geological Survey Fact Sheet FS-019-98, 4 p.

Mace, A., Rudolph, D.L., and Kachanoski, R.G., 1998,

Suitability of parametric models to describe the hydraulic properties of an unsaturated coarse sand and gravel: Ground Water, v. 36, no. 3, p. 465-475.

Nimmo, J.R., 1998,

Modeling structural effects on soil hydraulic properties, in Proceedings of the 16th World Congress of Soil Science, Montpellier, France, August 20-26, 1998.

Pomes, M.L., Wilkison, D.H., and McMahon, P.B., 1998,

Nitrous oxide fluxes from a claypan soil overlying nitrate-enriched glacial drift: Journal of Environmental Hydrology, v. 6, no. 8, p. 1-14.

Ronan, A.D., Prudic, D.E., Thodal, C.E., and Constantz, J., 1998,

Field study and simulation of diurnal temperature effects on infiltration and variably saturated flow beneath an ephemeral stream: Water Resources Research, v. 34, no. 9, p. 2137-2153, 98WR01572, doi:10.1029/98WR01572.

Striegl, R.G., Healy, R.W., Michel, R.L., and Prudic, D.E., 1998,

Tritium in unsaturated zone gases and air at the Amargosa Desert Research Site, and in spring and river water, near Beatty, Nevada, May 1997: U.S. Geological Survey Open-File Report 97-778, 13 p.

Anderson, D.E., Stannard, D.I., Striegl, R.G., and McConnaughey, T.A., 1997,

The exchanges of carbon dioxide and water vapor between Williams Lake and the atmosphere, in Winter, T.C., and Averett, R.C., eds., Interdisciplinary Research Initiative--Hydrological and biogeochemical research in the Shingobee River headwaters area, north-central Minnesota: U.S. Geological Survey Water-Resources Investigations Report 96-4215, p. 31-40.

Andraski, B.J., 1997,

Soil-water movement under natural-site and waste-site conditions--A multiple-year field study in the Mojave Desert, Nevada: Water Resources Research, v. 33, no. 9, p. 1901-1916, 97WR01502, doi:10.1029/97WR01502.

Andraski, B.J., 1997,

Test-trench studies in the Amargosa Desert, southern Nevada--Results and application of information to landfill covers in arid environments, in Reynolds, T.D., and Morris, R.C., eds., Landfill capping in the semi-arid west--Problems, perspectives, and solutions, May 21-22, 1997, Jackson Lake Lodge, Wyo., Conference Proceedings: Idaho Falls, Idaho: Environmental Science and Research Foundation, ESRF-019, p. 165-179.

Andraski, B.J., and Prudic, D.E., 1997,

Soil, plant, and structural considerations for surface barriers in arid environments--Application of results from studies in the Mojave Desert near Beatty, Nevada, in Barrier Technologies for Environmental Management, Summary of a workshop: Washington, D.C., National Academy Press, p. 68-78.

Baehr, A.L., Baker, R.J., and Lahvis, M.A., 1997,

Transport of MTBE across the water table to the unsaturated zone at a gasoline-spill site in Beaufort, S.C., in 213th American Chemical Society National Meeting, Proceedings, San Francisco, California, April 13-17, 1997: Washington, D.C., American Chemical Society, p. 417-418.

Broerman, J., Basset, R.L., Weeks, E.P., and Borgstrom, M., 1997,

Estimation of Al, velocity, Kd, and confidence limits from tracer injection data: Ground Water, v. 35, no. 6, p. 1066-1067.

Constantz, J., Stonestrom, D.A., and Thomas, C.L., 1997,

Turbidity, mountain-front, and interarroyo recharge in the middle Rio Grande basin, New Mexico--Collaborative National Research Program/New Mexico District Research Program, in Bartalino, J.R., ed., U.S. Geological Survey Middle Rio Grande Basin Study; Proceedings of the First annual workshop, Denver, Colorado, November 12-14, 1996: U.S. Geological Survey Open-File Report 97-116, p. 43.

Constantz, J., and Thomas, C.L., 1997,

Stream bed temperature profiles as indicators of percolation characteristics beneath arroyos in the Middle Rio Grande Basin, USA: Hydrological Processes, v. 11, no. 12, p. 1621-1634, doi:10.1002/(SICI)1099-1085(19971015)11:12<1621::AID-HYP493>3.0.CO;2-X.

Joss, C.J., and Baehr, A.L., 1997,

Documentation of AIR2D, A computer code to simulate two-dimensional, axisymmetric air flow in the unsaturated zone: U.S. Geological Survey Open-File Report 97-588, 106 p.

Lahvis, M.A., and Baehr, A.L., 1997,

Documentation of R-UNSAT, A computer model for the simulation of reactive transport in the unsaturated zone: U.S. Geological Survey Open-File Report 97-630, 104 p.

Lavigne, M.B., Ryan, M.G., Anderson, D.E., Baldocchi, D.D., Crill, P.M., Fitzfaarld, D.R., Goulden, M.L., Gower, S.T., Massheder, J.M., McCaughey, J.H., Rayment, M., and Striegl, R.G., 1997,

Comparing nocturnal eddy covariance measurements to estimates of ecosystem respiration made by scaling chamber measurements at six coniferous boreal sites: Journal of Geophysical Research, v. 102, no. D24, p. 28,977-28,985.

Lee, R.W., 1997,

Effects of carbon dioxide variations in the unsaturated zone on water chemistry in a glacial-outwash aquifer: Applied Geochemistry, v. 12, no. 4, p. 347-366, doi:10.1016/S0883-2927(97)00001-2.

Lull, K.J., House, L.B., and Tindall, J.A., 1997,

Use of rhodamine-WT dye to map mixing zones in Lake Dillon near Breckenridge, Colorado: Lake and Reservoir Management, v. 13, no. 2, p. 170-174.

Nimmo, J.R., 1997,

Looking for the big picture--USGS research on arid-region hydrology, in Morel-Seytoux, H.J., ed., Proceedings of the Seventeenth Annual American Geophysical Union Hydrology Days, Ft. Collins, Colorado, April 14-18, 1997: p. 237-238.

Nimmo, J.R., 1997,

Modeling structural influences on soil water retention: Soil Science Society of America Journal, v. 61, no. 3, p. 712-719.

Pankow, J.F., Thomson, N.R., Johnson, R.L., Baehr, A.L., and Zogorski, J.S., 1997,

The urban atmosphere as a non-point source for the transport of MTBE and other volatile organic compounds (VOC's) to shallow groundwater: Environmental Science and Technology, v. 31, no. 10, p. 2821-2828, doi:10.1021/es970040b.

Prudic, D.E., Stonestrom, D.A., and Striegl, R.G., 1997,

Tritium, deuterium, and oxygen-18 in water collected from unsaturated sediments near a low-level radioactive-waste burial site south of Beatty, Nevada: U.S. Geological Survey Water-Resources Investigations Report 97-4062, 23 p.

Stannard, D.I., 1997,

Energy-budget eddy-correlation technique, in Czarnecki, J.B., ed., Geohydrology and evapotranspiration at Franklin Lake playa, Inyo County, California: U.S. Geological Survey Water-Supply Paper 2377, p. 25-35.

Stannard, D.I., 1997,

A theoretically based determination of Bowen-ratio fetch requirements: Boundary-Layer Meteorology, v. 83, no. 3, p. 375-406, doi:10.1023/A:1000286829849.

Stannard, D.I., Anderson, D.E., and Rosenberry, D.O., 1997,

Problems in comparing short-term eddy-correlation and energy-budget measurements of evaporation from Williams Lake, in Winter, T.C., ed., Hydrological and biogeochemical research in the Shingobee River Headwaters Area, north-central Minnesota: U.S. Geological Survey Water-Resources Investigations Report 96-4215, p. 41-46.

Wood, W.W., Rainwater, K.A., and Thompson, D.B., 1997,

Quantifying macropore recharge--Examples from a semi-arid area: Ground Water, v. 35, no. 6, p. 1097-1106.

Aga, D.S., Thurman, E.M., Yockel, M.E., Zimmerman, L.R., and Williams, T.D., 1996,

Identification of a new sulfonic acid metabolite of metolachlor in soil: Environmental Science and Technology, v. 30, no. 2, p. 592-597, doi:10.1021/es9503600.

Andraski, B.J., 1996,

Properties and variability of soil and trench fill at an arid waste-burial site: Soil Science Society of America Journal, v. 60, no. 1, p. 54-66.

Andraski, B.J., 1996,

Simulated trench studies near Beatty, Nevada-Initial results and implications, in Stevens, P.R., and Nicholson, T.J., eds., Joint U.S. Geological Survey, U.S. Nuclear Regulatory Commission Workshop on research related to low-level radioactive waste disposal, May 4-6, 1993, National Center, Reston, Virginia, Proceedings: U.S. Geological Survey Water-Resources Investigations Report 95-4015, p. 111-118.

Bazuhair, A.S., and Wood, W.W., 1996,

Chloride mass-balance method for estimating ground-water recharge in arid areas--Examples from western Saudi Arabia: Journal of Hydrology, v. 186, p. 153-159, doi:10.1016/S0022-1694(96)03028-4.

Blevins, D.W., Wilkison, D.H., Kelly, B.P., and Silva, S.R., 1996,

Movement of nitrate fertilizer to glacial till and runoff from a claypan soil: Journal of Environmental Quality, v. 25, no. 3, p. 582-593.

Bosch, D.D., Leonard, R.A., and Hubbard, R.K., 1996,

Unsaturated zone transport at the Plains, Georgia field site, in Morganwalp, D.W., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Colorado Springs, Colorado, September 20-24, 1993: U.S. Geological Survey Water-Resources Investigations Report 94-4015, v. 2, p. 965-969.

Chapelle, F.H., and Bradley, P.M., 1996,

Microbial degradation of nitrotoluenes in surface soils and aquifer sediments, Weldon Spring, Missouri, in Morganwalp, D.W., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Colorado Springs, Colorado, September 20-24, 1993: U.S. Geological Survey Water-Resources Investigations Report 94-4015, v. 2, p. 889-894.

Chiou, C.T., and Rutherford, D.W., 1996,

Determination of surface area of soil components by sorption of nitrogen and ethylene glycol monoethyl ether vapors and evaluation of adsorption, partition and cation solvation processes, in Morganwalp, D.W., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Colorado Springs, Colorado, September 20-24, 1993: U.S. Geological Survey Water-Resources Investigations Report 94-4015, v. 1, p. 375-380.

Cho, H.J., Smith, J.A., and Jaffé, P.R., 1996,

Simulation of trichloroethylene volatilization in the unsaturated zone during a field infiltration experiment at Picatinny Arsenal, New Jersey, in Morganwalp, D.W., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Colorado Springs, Colorado, September 20-24, 1993: U.S. Geological Survey Water-Resources Investigations Report 94-4015, v. 1, p. 315-320.

Constantz, J., and Thomas, C.L., 1996,

The use of streambed temperature profiles to estimate the depth, duration, and rate of percolation beneath arroyos: Water Resources Research, v. 32, no. 12, p. 3597-3602, 96WR03014, doi:10.1029/96WR03014.

Delin, G.N., and Landon, M.K., 1996,

Effects of topography on the transport of agricultural chemicals near Princeton, Minnesota, 1992, in Morganwalp, D.W., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Colorado Springs, Colorado, September 20-24, 1993: U.S. Geological Survey Water-Resources Investigations Report 94-4015, v. 1, p. 555-564.

Delin, G.N., Landon, M.K., Healy, R.W., and Olsen, H.W., 1996,

Spatial variability of unsaturated-zone properties in relation to topography in a sand-plain setting near Princeton, Minnesota, in Morganwalp, D.W., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Colorado Springs, Colorado, September 20-24, 1993: U.S. Geological Survey Water-Resources Investigations Report 94-4015, v. 1, p. 565-573.

Ehlke, T.A., and Imbrigiotta, T.E., 1996,

Cometabolic biotransformation of trichloroethylene and cis-1,2-dichloroethylene in unsaturated-zone soil at Picatinny Arsenal, New Jersey, in Morganwalp, D.W., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Colorado Springs, Colorado, September 20-24, 1993: U.S. Geological Survey Water-Resources Investigations Report 94-4015, v. 1, p. 321-327.

Fischer, J.M., Baker, R.J., Lahvis, M.A., and Baehr, A.L., 1996,

Determination of vapor-phase diffusion coefficients for unsaturated-zone sediments at a gasoline-spill site in Galloway Township, New Jersey, in Morganwalp, D.W., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Colorado Springs, Colorado, September 20-24, 1993: U.S. Geological Survey Water-Resources Investigations Report 94-4015, v. 1, p. 35-41.

Garges, J.A., 1996,

The relative importance between advection and dispersion for solutes in the saturated zone and vapors in the unsaturated zone: Philadelphia, Pa., Drexel University, Department of Civil Engineering, unpublished M.S. thesis, 65 p.

Glynn, P.D., and Busenberg, E., 1996,

Unsaturated zone diffusion of carbon dioxide and oxygen in the Pinal Creek basin, Arizona, in Morganwalp, D.W., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Colorado Springs, Colorado, September 20-24, 1993: U.S. Geological Survey Water-Resources Investigations Report 94-4015, v. 2, p. 1055-1064.

Green, T.R., Constantz, J.E., and Freyberg, D.L., 1996,

Upscaled soil-water retention using van Genuchten's function: Journal of Hydrologic Engineering, v. 1, no. 3, p. 123-130, doi:10.1061/(ASCE)1084-0699(1996)1:3(123).

Healy, R.W., and Ronan, A.D., 1996,

Documentation of computer program VS2DH for simulation of energy transport in variably saturated porous media--modification of the U.S. Geological Survey's computer program VS2DT: U.S. Geological Survey Water-Resources Investigations Report 96-4230, 36 p.

Healy, R.W., Striegl, R.G., Russell, T.F., Hutchinson, G.L., and Livingston, G.P., 1996,

Numerical evaluation of static-chamber measurements of soil-atmospheric gas exchange--Identification of physical processes: Soil Science Society of America Journal, v. 60, no. 2, p. 740-747.

Hicks, D.W., McConnell, J.B., Persinger, H.H., Scholz, J.D., and Hubbard, R.K., 1996,

Two-dimensional distribution of a bromide tracer in the unsaturated zone at the Plains, Georgia, research site, in Morganwalp, D.W., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Colorado Springs, Colorado, September 20-24, 1993: U.S. Geological Survey Water-Resources Investigations Report 94-4015, v. 2, p. 971-982.

Hubbard, R.K., Bosch, D.D., Leonard, R.A., and Hicks, D.W., 1996,

Spatial variability of soil properties affecting chemical transport at the Plains, Georgia, research site, in Morganwalp, D.W., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Colorado Springs, Colorado, September 20-24, 1993: U.S. Geological Survey Water-Resources Investigations Report 94-4015, v. 2, p. 983-992.

Joss, C.J., and Baehr, A.L., 1996,

A multispecies transport model to simulate vapor extraction and bioventing remediation of unsaturated zones contaminated with gasoline, in Morganwalp, D.W., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Colorado Springs, Colorado, September 20-24, 1993: U.S. Geological Survey Water-Resources Investigations Report 94-4015, v. 1, p. 61-63.

Koller, D., Imbrigiotta, T.E., and Smith, J.A., 1996,

Effect of air drying on solvent extraction of trichloroethylene-contaminated soil, Picatinny Arsenal, New Jersey, in Morganwalp, D.W., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Colorado Springs, Colorado, September 20-24, 1993: U.S. Geological Survey Water-Resources Investigations Report 94-4015, v. 1, p. 339-345.

Kustas, W.P., Stannard, D.I., and Allwine, K.J., 1996,

Variability in surface energy flux partitioning during Washita '92--Resulting effects on Penman-Montieth and Priestley-Taylor parameters: Agricultural and Forest Meteorology, v. 82, p. 1781-193, doi:10.1016/0168-1923(96)02334-9.

Lahvis, M.A., and Baehr, A.L., 1996,

Estimation of rates of aerobic hydrocarbon biodegradation by simulation of gas transport in the unsaturated zone: Water Resources Research, v. 32, no. 7, p. 2231-2249, 96WR00805, doi:10.1029/96WR00805.

Lahvis, M.A., Baehr, A.L., and Fischer, J.M., 1996,

Method for estimating the rate of microbial degradation of hydrocarbons associated with bioventing at a gasoline-spill site in Galloway Township, New Jersey, in Morganwalp, D.W., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Colorado Springs, Colorado, September 20-24, 1993: U.S. Geological Survey Water-Resources Investigations Report 94-4015, v. 1, p. 27-34.

Lamb, J.A., Tomer, M.D., Anderson, J.L., and Dowdy, R.H., 1996,

Nitrogen uptake and soil water variability across a sand plain landscape, in Morganwalp, D.W., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Colorado Springs, Colorado, September 20-24, 1993: U.S. Geological Survey Water-Resources Investigations Report 94-4015, v. 1, p. 575-579.

LeBlanc, D.R., 1996,

Tracer tests in saturated and unsaturated sand and gravel glacial outwash, Cape Cod, Massachusetts, in Stevens, P.R., and Nicholson, T.J., eds., Joint U.S. Geological Survey, U.S. Nuclear Regulatory Commission Workshop on research related to low-level radioactive waste disposal, Reston, Virginia, May 4-6, 1993, Proceedings: U.S. Geological Survey Water-Resources Investigations Report 95-4015, p. 166-170.

Meyer, P.D., Rockhold, M.L., Nichols, W.E., and Gee, G.W., 1996,

Hydrologic evaluation methodology for estimating water movement through the unsaturated zone at commercial low-level radioactive waste disposal sites: U.S. Nuclear Regulatory commission NUREG/CR-6346, PNL-10843, 102 p.

Nolan, J.G., Baker, R.J., and Baehr, A.L., 1996,

Method for monitoring biodegradation of hydrocarbons in unsaturated porous media, in Morganwalp, D.W., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Colorado Springs, Colorado, September 20-24, 1993: U.S. Geological Survey Water-Resources Investigations Report 94-4015, v. 1, p. 49-54.

Olsen, H.W., 1996,

Measurements of hydraulic conductivity and capillary pressure under unsaturated conditions in a laboratory triaxial system, in Morganwalp, D.W., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Colorado Springs, Colorado, September 20-24, 1993: U.S. Geological Survey Water-Resources Investigations Report 94-4015, v. 2, p. 941-948.

Prudic, D.E., 1996,

Water-vapor movement through unsaturated alluvium in Amargosa Desert near Beatty, Nevada--Current understanding and continuing studies, in Stevens, P.R., and Nicholson, T.J., eds., Joint U.S. Geological Survey, U.S. Nuclear Regulatory Commission Workshop on research related to low-level radioactive waste disposal, May 4-6, 1993, National Center, Reston, Virginia, Proceedings: U.S. Geological Survey Water-Resources Investigations Report 95-4015, p. 157-166.

Prudic, D.E., and Gee, G., 1996,

Topic III-Infiltration and drainage, in Stevens, P.R., and Nicholson, T.J., eds., Joint U.S. Geological Survey, U.S. Nuclear Regulatory Commission Workshop on research related to low-level radioactive waste disposal, May 4-6, 1993, National Center, Reston, Virginia, Proceedings: U.S. Geological Survey Water-Resources Investigations Report 95-4015, p. 6-8.

Rossi, C., and Nimmo, J.R., 1996,

Modelli modificati di curve di ritenzione idrica in mezzi porosi non saturi: Quaderni di Geologia Applicata, v. 3, p. 127-136.

Rudolph, D.L., Kachanoski, R.G., Celia, M.A., LeBlanc, D.R., and Stevens, J.H., 1996,

Infiltration and solute transport experiments in unsaturated sand and gravel, Cape Cod, Massachusetts--Experimental design and overview of results: Water Resources Research, v. 32, no. 3, p. 519-532, 95WR02972, doi:10.1029/95WR02972.

Schroeder, R.A., Martin, P., and Böhlke, J.K., 1996,

Chemical, isotopic, and microbiological evidence for denitrification during transport of domestic wastewater through a thick unsaturated zone in the Mojave Desert, in Morganwalp, D.W., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Colorado Springs, Colorado, September 20-24, 1993: U.S. Geological Survey Water-Resources Investigations Report 94-4015, v. 2, p. 917-926.

Shakofsky, S., and Nimmo, J.R., 1996,

Unsaturated zone properties at a hazardous-waste-disposal site at the Idaho National Engineering Laboratory, in Morganwalp, D.W., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Colorado Springs, Colorado, September 20-24, 1993: U.S. Geological Survey Water-Resources Investigations Report 94-4015, v. 2, p. 949-953.

Smith, J.A., Tisdale, A.K., and Cho, H.J., 1996,

Quantification of natural vapor fluxes of trichloroethene in the unsaturated zone at Picatinny Arsenal, New Jersey: Environmental Science and Technology, v. 30, no. 7, p. 2243-2250, doi:10.1021/es950610c.

Stackelberg, P.E., and Eckhardt, D.A.V., 1996,

Modeling statistical relations among shallow ground-water quality, human activities, land use, and thickness of the unsaturated zone on Long Island, New York, in Morganwalp, D.W., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Colorado Springs, Colorado, September 20-24, 1993: U.S. Geological Survey Water-Resources Investigations Report 94-4015, v. 2, p. 993-1000.

Striegl, R.G., Prudic, D.E., Duval, J.S., Healy, R.W., Landa, E.R., Pollock, D.W., Thorstenson, D.C., and Weeks, E.P., 1996,

Factors affecting tritium and 14carbon distributions in the unsaturated zone near the low-level radioactive-waste burial site south of Beatty, Nevada: U.S. Geological Survey Open-File Report 96-110, 16 p.

Tindall, J.A., and Vencill, W.K., 1996,

Atrazine transport through preferential pathways at the Missouri MSEA, in Morganwalp, D.W., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Colorado Springs, Colorado, September 20-24, 1993: U.S. Geological Survey Water-Resources Investigations Report 94-4015, v. 1, p. 607-611.

Weeks, E.P., 1996,

Problems of field identification of preferential flow through fractured media, in Stevens, P.R., and Nicholson, J.J., eds., Joint U.S. Geological Survey, U.S. Nuclear Regulatory Commission workshop on research related to low-level radioactive waste disposal, May 4-6, 1993, National Center, Reston, Virginia; Proceedings: U.S. Geological Survey Water-Resources Investigations Report 95-4015, p. 96-102.

Welty, C., Joss, C.J., and Baehr, A.L., 1996,

Optimizing the design of vapor-extraction remediation systems for removal of organic contaminants from the unsaturated zone, in Morganwalp, D.W., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Colorado Springs, Colorado, September 20-24, 1993: U.S. Geological Survey Water-Resources Investigations Report 94-4015, v. 1, p. 55-59.

Wood, J.L., 1996,

Selected meteorological and micrometeorological data for an arid site near Beatty, Nye County, Nevada, calendar year 1992: U.S. Geological Survey Open-File Report 96-434, 33 p.

Aiken, G., and Cotsaris, E., 1995,

Soil and hydrology--Their effect on natural organic matter: Journal of the American Water Works Association, v. 87, p. 36-45.

Andraski, B.J., Prudic, D.E., and Nichols, W.D., 1995,

Waste burial in arid environments--Application of information from a field laboratory in the Mojave Desert, southern Nevada: U.S. Geological Survey Fact Sheet FS-179-95, 4 p.

Baehr, A.L., and Baker, R.J., 1995,

Use of a reactive gas transport model to determine rates of hydrocarbon biodegradation in unsaturated porous media: Water Resources Research, v. 31, no. 11, p. 2877-2882, 95WR02077, doi:10.1029/95WR02077.

Baehr, A.L., and Joss, C.J., 1995,

An updated model of induced airflow in the unsaturated zone: Water Resources Research, v. 31, no. 2, p. 417-421, 94WR02423, doi:10.1029/94WR02423.

Chiou, C.T., 1995,

Comment on "Thermodynamics of organic chemical partition in soils": Environmental Science and Technology, v. 29, no. 5, p. 1421-1422, doi:10.1021/es00005a040.

Constantz, J., 1995,

Determination of water retention in stratified porous materials: Transport in Porous Media, v. 18, p. 217-229, doi:10.1007/BF00616932.

Constantz, J., and Zellweger, G., 1995,

Relations between stream temperature discharge, and stream/groundwater interaction along several mountain streams, in Guy, B.T., and Bernard, J., eds., Mountain Hydrology: Ontario, Canada, Canadian Water Resources Association, p. 79-85.

Deitsch, J.J., and Smith, J.A., 1995,

Effect of Triton X-100 on the rate of trichloroethene desorption from soil to water: Environmental Science and Technology, v. 29, no. 4, p. 1069-1080, doi:10.1021/es00004a029.

Delin, G.N., Landon, M.K., Anderson, J.L., Lamb, J.A., and Dowdy, R.H., 1995,

Transport of agricultural chemicals to ground water near Princeton, Minnesota, 1991-93, in Clean Water--Clean Environment--21st Century Conference, Proceedings, Kansas City, Missouri, March 5-8, 1995: St. Joseph, Michigan, American Society of Agricultural Engineers, v. 1, p. 57-60.

Green, T.R., and Freyberg, D.L., 1995,

State-dependent anisotrophy--Comparison of quasi-analytical solutions with stochastic results for steady gravity drainage: Water Resources Research, v. 31, no. 9, p. 2201-2212, 95WR00790, doi:10.1029/95WR00790.

Joss, C.J., and Baehr, A.L., 1995,

Documentation of AIR3D, An adaptation of the ground water flow code MODFLOW to simulate three-dimensional airflow in the unsaturated zone: U.S. Geological Survey Open-File Report 94-533, 154 p.

Kile, D.E., Chiou, C.T., Zhou, H., Li, H., and Xu, O., 1995,

Partition of nonpolar organic pollutants from water to soil and sediment organic matters: Environmental Science and Technology, v. 29, no. 5, p. 1401-1406, doi:10.1021/es00005a037.

McMahon, P.B., Tindall, J.A., Collins, J.A., Lull, K.J., and Nuttle, J.R., 1995,

Hydrologic and geochemical effects on oxygen uptake in bottom sediments of an effluent-dominated river: Water Resources Research, v. 31, p. 2561-2569.

Nimmo, J.R., 1995,

Measurement of unsaturated zone physical characteristics and water fluxes, in Stevens, P.R., and Nicholson, T.J., eds., Proceedings of the USGS-U.S. Nuclear Regulatory Commission Joint Technical Workshop on Research Related to Low-Level Radioactive Waste Disposal; Reston, Virginia, 1993: U.S. Geological Survey Water-Resources Investigations Report 95-4015, p. 91-96.

Phillips, E.J.P., Landa, E.R., and Lovley, D.R., 1995,

Remediation of uranium contaminated soils with bicarbonate extraction and microbial U(VI) reduction: Journal of Industrial Microbiology, v. 14, no. 3-4, p. 203-207, doi:10.1007/BF01569928.

Prudic, D.E., and Striegl, R.G., 1995,

Tritium and radioactive carbon (14C) analyses of gas collected from unsaturated sediments next to a low-level radioactive-waste burial site south of Beatty, Nevada, April 1994 and July 1995: U.S. Geological Survey Open-File Report 95-741, 7 p.

Rudolph, D.L., and Ferre, P., 1995,

Application of time-domain reflectrometry techniques to field-scale tracer testing in unsaturated sediments, in Gambolati, G., and Verri, G., eds., Advanced Methods for Groundwater Pollution Control, proceedings of the international symposium, Udine, Italy, May 5-6, 1994: Springer Verlag, International Centre for Mechanical Sciences, v. 364, p. 217-234.

Shakofsky, S.M., 1995,

Changes in soil hydraulic properties caused by construction of a simulated waste trench at the Idaho National Engineering Laboratory, Idaho: U.S. Geological Survey Water-Resources Investigations Report 95-4058, 26 p.

Stannard, D.I., and Weaver, H.L., 1995,

Measurements of evapotranspiration, surface energy fluxes, weather variables, and water-table depths in the closed basin of the San Luis Valley, Alamosa County, Colorado, 1985-88: U.S. Geological Survey Open-File Report 93-639, 61 p.

Tindall, J.A., Petrusak, R.L., and McMahon, P.B., 1995,

Nitrate transport and transformation processes in unsaturated porous media: Journal of Hydrology, v. 169, no. 1-4, p. 51-94, doi:10.1016/0022-1694(94)02666-Y.

Tindall, J.A., and Vencill, W.K., 1995,

Transport of atrazine, 2,4-D, and dicamba through preferential flowpaths in an unsaturated claypan soil near Centralia, Missouri: Journal of Hydrology, v. 166, no. 1-2, p. 37-59, doi:10.1016/0022-1694(94)02603-9.

Tisdale, A.K., 1995,

Quantification of vapor phase fluxes of trichloroethene in the unsaturated zone at Picatinny Arsenal, New Jersey: Charlottesville, University of Virginia, Department of Civil Engineering and Applied Science, M.S. thesis, 59 p.

Wang, Y.S., Miller, D.R., Anderson, D.E., and McManus, M.L., 1995,

A lagrangian stochastic model for aerial spray transport above an oak forest: Agricultural and Forest Meteorology, v. 76, no. 3-4, p. 277-291, doi:10.1016/0168-1923(95)02221-I.

Wood, J.L., and Andraski, B.J., 1995,

Selected meteorological data for an arid site near Beatty, Nye County, Nevada, calendar years 1990-91: U.S. Geological Survey Open-File Report 94-489, 49 p.

Wood, W.W., and Sanford, W.E., 1995,

Chemical and isotopic methods for quantifying ground-water recharge in a regional, semi-arid environment: Ground Water, v. 33, no. 3, p. 458-468.

Bradley, P.M., Chapelle, F.H., Landmeyer, J.E., and Schumacher, J.G., 1994,

Microbial transformation of nitroaromatics in surface soils and aquifer materials: Applied and Environmental Microbiology, v. 60, no. 6, p. 2170-2175.

Chiou, C.T., and Kile, D.E., 1994,

Effects of polar and nonpolar groups on the solubility of organic compounds in soil organic matter: Environmental Science and Technology, v. 28, no. 6, p. 1139-1144, doi:10.1021/es00055a026.

Constantz, J., Thomas, C.L., and Zellweger, G., 1994,

Influence of diurnal variations in stream temperature on streamflow loss and groundwater recharge: Water Resources Research, v. 30, no. 12, p. 3253-3264, 94WR01968, doi:10.1029/94WR01968.

Deitsch, J.J., 1994,

Surfactant-enhanced desorption of trichloroethene from aquifer soils: Charlottesville, University of Virginia, Department of Civil Engineering and Applied Mechanics, M.S. thesis, 121 p.

Di Cesare, D., and Smith, J.A., 1994,

Effects of surfactants on the desorption rate of nonionic organic compounds from soil to water: Reviews of Environmental Contamination and Toxicology, v. 134, p. 1-29.

Gee, G.W., Wierenga, P.J., Andraski, B.J., Young, M.H., Fayer, M.J., and Rockhold, M.L., 1994,

Variations in water balance and recharge potential at three western desert sites: Soil Science Society of America Journal, v. 58, no. 1, p. 63-72.

Johnson, P.C., Baehr, A.L., Brown, R.A., Hinchee, R., and Hoag, G.E., 1994,

Vacuum vapor extraction, in Anderson, W.C., ed., Innovative site remediation technology: American Academy of Environmental Engineers Monograph Series v. 8, p. 224.

Komor, S.C., and Emerson, D.G., 1994,

Movements of water, solutes, and stable isotopes in the unsaturated zones of two sand plains in the upper Midwest: Water Resources Research, v. 30, no. 2, p. 253-267, 93WR03099, doi:10.1029/93WR03099.

Kustas, W.P., Blanford, J.H., Stannard, D.I., Daughtry, C.S.T., Nichols, W.D., and Weltz, M.A., 1994,

Local energy flux estimates for unstable conditions using variance data in semi-arid rangelands: Water Resources Research, v. 30, no. 5, p. 1351-1361.

Kustas, W.P., Moran, M.S., Humes, K.S., Stannard, D.I., Pinter Jr., P.J., Hipps, L.E., Swiatek, E., and Goodrich, D.C., 1994,

Surface energy balance estimates at local and regional scales using optical remote sensing from an aircraft platform and atmospheric data collected over semiarid rangelands: Water Resources Research, v. 30, no. 5, p. 1241-1259.

Mace, R.A., 1994,

Steady-state flow and non-reactive transport in unsaturated sand and gravel cores: Waterloo, Ontario, Canada, University of Waterloo, Department of Earth Sciences, unpublished M.S. thesis, 275 p.

Mills, M.S., and Thurman, E.M., 1994,

Preferential dealkylation reactions of s-triazine herbicides in the unsaturated zone: Environmental Science and Technology, v. 28, no. 4, p. 600-605, doi:10.1021/es00053a011.

Moran, M.S., Kustas, W.P., Vidal, A., Stannard, D.I., Blanford, J.H., and Nichols, W.D., 1994,

Use of ground-based remotely sensed data for surface energy balance evaluation of a semiarid rangeland: Water Resources Research, v. 30, no. 5, p. 1339-1349.

Nimmo, J.R., Stonestrom, D.A., and Akstin, K.C., 1994,

The feasibility of recharge rate measurements using the steady state centrifuge method: Soil Science Society of America Journal, v. 58, p. 49-56.

Prudic, D.E., 1994,

Estimates of percolation rates and ages of water in unsaturated sediments at two Mojave Desert sites, California-Nevada: U.S. Geological Survey Water-Resources Investigations Report 94-4160, 19 p.

Reddy, M.M., Claassen, H.C., Rutherford, D.W., and Chiou, C.T., 1994,

Welded tuff porosity characterization using mercury intrustion porosimetry, nitrogen adsorption/desorption, ethylene glycol monoethyl ether gas phase sorption and epifluorescence microscopy: Applied Geochemistry, v. 9, p. 491-499.

Rossi, C., and Nimmo, J.R., 1994,

Modeling of soil water retention from saturation to oven dryness: Water Resources Research, v. 30, p. 701-708.

Stannard, D.I., Blanford, J.H., Kustas, W.P., Nichols, W.D., Amer, S.A., Schmugge, T.J., and Weltz, M.A., 1994,

Interpretation of surface flux measurements in heterogeneous terrain during the Monsoon experiment: Water Resources Research, v. 30, no. 5, p. 1227-1239.

Stevens, J.H., 1994,

Analysis and modeling of infiltration and solute transport experiments in unsaturated sand and gravel, Cape Cod, Massachusetts: Princeton, N.J., Princeton University, Department of Civil Engineering and Operations Research, unpublished M.S. thesis, 266 p.

Tindall, J.A., Lull, K.J., and Gaggiani, N.G., 1994,

Effects of land disposal of municipal sewage sludge on fate of nitrates in soil, streambed sediment and water quality: Journal of Hydrology, v. 163, no. 1-2, p. 147-185, doi:10.1016/0022-1694(94)90027-2

Wershaw, R.L., Aiken, G.R., Imbrigiotta, T.E., and Goldberg, M.C., 1994,

Displacement of soil pore water by trichloroethylene: Journal of Environmental Quality, v. 23, no. 4, p. 792-798.

Wilkison, D.H., Blevins, D.W., Kelly, B.P., and Wallace, W.C., 1994,

Hydrology and water quality in claypan soil and glacial till at the Missouri Manangement Systems Evaluation Area near Centralia, Mo.--May 1991 to September 1993: U.S. Geological Survey Open-File Report 94-705-W, 65 p.

Alberts, E.E., Prato, T., Kitchen, N.K., and Blevins, D.W., 1993,

Research and education to improve surface and ground water quality of a claypan soil, in Agricultural Research to Protect Water Quality--Proceedings of the Conference, Minneapolis, Minnesota, February 21-24, 1993: Ankeny, Iowa, Soil and Water Conservation Society, p. 21-38.

Baker, R.J., 1993,

A laboratory method for quantifying the rate of microbial degradation of hydrocarbons in unsaturated porous media: Philadelphia, Pa., Drexel University, Environmental Studies Institute, unpublished Ph.D. dissertation, 235 p.

Chiou, C.T., Rutherford, D., and Manes, M., 1993,

Sorption of nitrogen and ethylene glycol monoethyl ether (EGME) vapors on some soils, clays, and mineral oxides and determination of sample surface areas by use of sorption data: Environmental Science and Technology, v. 27, no. 8, p. 1587-1594, doi:10.1021/es00045a014.

Cho, H.J., Jaffé, P.R., and Smith, J.A., 1993,

Simulating the volatilization of solvents in unsaturated soils during laboratory and field infiltration experiments: Water Resources Research, v. 29, no. 10, p. 3329-3342, 93WR01414, doi:10.1029/93WR01414.

Constantz, J., 1993,

Confirmation of rate-dependent behavior in water retention during drainage in nonswelling porous materials: Water Resources Research, v. 29, no. 4, p. 1331-1334, 93WR00005, doi:10.1029/93WR00005.

Delin, G.N., and Landon, M.K., 1993,

Effects of focused recharge on the transport of agricultural chemicals at the Princeton, Minnesota Management Systems Evaluation Area--Preliminary results, in Agricultural Research to Protect Water Quality--Proceedings of the Conference, Minneapolis, Minn., February 21-24, 1993: Ankeny, Iowa, Soil and Water Conservation Society, p. 210-214.

Delin, G.N., and Landon, M.K., 1993,

Effects of focused recharge on the transport of agricultural chemicals at the Princeton, Minnesota Management Systems Evaluation Area: U.S. Geological Survey Open-File Report 93-42, 8 p.

Delin, G.N., and Landon, M.K., 1993,

Effects of recharge on the transport of agricultural chemicals at the Princeton, Minnesota Management Systems Evaluation Area, 1991-92: U.S. Geological Survey Open-File Report 93-79, 2 p.

Dillard, L.A., 1993,

Multiphase flow modeling of a crude-oil spill site using geostatistical simulation of soil hydraulic properties: Stanford, Calif., Stanford University, M.S. thesis, 115 p.

Ehlke, T.A., and Imbrigiotta, T.E., 1993,

Cometabolic biotransformation of trichloroethylene and cis-1,2-dichloroethylene in unsaturated-zone soil at Picatinny Arsenal, New Jersey, in Special Symposium on Emerging Technologies in Hazardous Waste Management V, American Chemical Society, Atlanta, Ga., September 27-29, 1993: Washington, D.C., American Chemical Society, p. 522-525.

Essaid, H.I., Herkelrath, W.N., and Hess, K.M., 1993,

Simulation of fluid distributions observed at a crude oil spill site incorporating hysteresis, oil entrapment, and spatial variability of hydraulic properties: Water Resources Research, v. 29, no. 6, p. 1753-1770, 93WR00370, doi:10.1029/93WR00370.

Healy, R.W., and Russell, T.F., 1993,

A finite-volume Eulerian-Lagrangian localized adjoint method for solution of the advection-dispersion equation: Water Resources Research, v. 29, no. 7.

Humes, K.S., Kustas, W.P., Keefer, T.O., Goodrich, D.C., and Stannard, D.I., 1993,

Chapter XI. Ground-based optical remote sensing measurements, in Jackson, T.J., and Schiebe, F.R., eds., Hydrology Data Report--Washita '92: Agricultural Research Service National Agricultural Water Quality Laboratory Report 93-1, p. XI1-XI3.

Joss, C.J., 1993,

A multispecies transport model to simulate vapor extraction from the unsaturated zone: Philadelphia, Pa., Drexel University, Department of Civil Engineering, unpublished Ph.D. dissertation, 145 p.

Kelly, B.P., and Blevins, D.W., 1993,

Hydrologic budget and nitrogen distribution for an agricultural study plot in claypan soil and glacial till near Centralia, Mo.--May 1991 to May 1992, in Proceedings from 3rd Annual Missouri Water Quality Conference, Columbia, Missouri, Feb. 4, 1993: Columbia, Missouri, University of Missouri, p. 100-105.

Kelly, B.P., and Blevins, D.W., 1993,

Hydrologic budget and nitrogen distribution for an agricultural test plot in claypan soil and glacial till near Centralia, Missouri--May 1991 to May 1992, in Agricultural Research to Protect Water Quality--Proceedings of the Conference, Minneapolis, Minn., February 21-24, 1993: Ankeny, Iowa, Soil and Water Conservation Society, p. 545-547.

Kelly, B.P., and Blevins, D.W., 1993,

Hydrology and nitrogen distribution in claypan soil and glacial till near Centralia, Missouri--May 1991 to May 1992, in Agricultural Research to Protect Water Quality, Minneapolis, Minnesota, 1993: Ankeny, Iowa, Soil and Water Conservation Society, p. 545-546.

Kinoshita, T., Bales, R.C., Maguire, K.M., and Gerba, C.P., 1993,

Effect of pH on bacteriophage transport through sandy soils: Journal of Contaminant Hydrology, v. 14, p. 55-70, doi:10.1016/0169-7722(93)90041-P.

Lahvis, M.A., 1993,

A two-dimensional vapor diffusion model for the unsaturated zone with applications to the Galloway Township, New Jersey hydrocarbon research site: Philadelphia, Pa., Drexel University, Department of Civil Engineering, unpublished Ph.D. dissertation, 204 p.

Mills, P.C., and Healy, R.W., 1993,

Water and tritium movement through the unsaturated zone at a low-level radioactive-waste disposal site near Sheffield, Illinois, 1981-1985: U.S. Geological Survey Water-Supply Paper 2386, 72 p.

Rutherford, D.W., Chiou, C.T., and Manes, M., 1993,

Interactions of polar and nonpolar vapors with soil organic matter, clays, and organo-clays, in Yong, R.N., Hadjinicolaou, J., and Mohamed, A.M.O., eds., Joint CSCE-ASCE National Conference on Environmental Engineering--Proceedings of the technical meeting, Montreal, Quebec, Canada: v. II, p. 1057-1064.

Shakofsky, S.M., 1993,

Changes in the hydraulic properties of a soil caused by construction of a waste trench at a radioactive waste disposal site: San Jose State University, M.S. thesis, 53 p.

Stannard, D.I., 1993,

Comparison of Penman-Monteith, Shuttleworth-Wallace, and modified Priestley-Taylor evapotranspiration models for wildland vegetation in semiarid rangeland: Water Resources Research, v. 29, no. 5, p. 1379-1392.

Stannard, D.I., Kustas, W.P., Allwine, K.J., and Anderson, D.E., 1993,

Chapter V., Micrometeorological data collection, in Jackson, T.J., and Schiebe, F.R., eds., Hydrology Data Report--Washita '92: Agricultural Research Service National Agricultural Water Quality Laboratory Report 93-1, p. V1-V11.

Tindall, J.A., 1993,

Preferential transport of atrazine in well structured soils, in Agricultural Research to Protect Water Quality--Proceedings of the Conference, Minneapolis, Minn., February 21-24, 1993: Ankeny, Iowa, Soil and Water Conservation Society, p. 154-156.

Anderson, D.E., Miller, D.R., Wang, Y.S., Yendol, W.G., and Mierzejewski, K., 1992,

Deposition of aerially applied BT in an oak forest and its prediction with the FSCBG model: Journal of Applied Meteorology, v. 31, p. 1457-1466.

Andraski, B.J., 1992,

Water movement through soil at a low-level radioactive-waste site in the Amargosa Desert: U.S. Geological Survey Yearbook, Fiscal Year 1991, 73-75 p.

Bitton, G., and Harvey, R.W., 1992,

Transport of pathogens through soils and aquifers, in Mitchell, R., ed., Environmental Microbiology: New York, Wiley-Liss, p. 103-124.

Chiou, C.T., Lee, J.F., and Boyd, S.A., 1992,

Reply to comment on "The surface area of soil organic matter": Environmental Science and Technology, v. 26, no. 2, p. 404-406, doi:10.1021/es00026a028.

Fischer, J.M., 1992,

Sediment properties and water movement through shallow unsaturated alluvium at an arid site for disposal of low-level radioactive waste near Beatty, Nye County, Nevada: U.S. Geological Survey Water-Resources Investigations Report 92-4032, 48 p.

Healy, R.W., and Russell, T.F., 1992,

Solution of the advection-dispersion equation by a finite-volume Eulerian-Langrangian local adjoint method, in Russell