Applications of Computer Simulation Models to Solve Contamination Problems

Böhlke, J.K., Smith, R.L., and Miller, D.N., 2006,

Ammonium transport and reaction in contaminated groundwater--Application of isotope tracers and isotope fractionation studies: Water Resources Research, v. 42, W05411, doi:10.1029/2005WR004349.

Godsy, E.M., Goerlitz, D.F., and Grbic'-Galic', D., 1990,

Anaerobic biodegradation of creosote contaminants in natural and simulated ground water ecosystems, in Symposium on Bioremediation of Hazardous Wastes--EPA's Biosystems Technology Development Program, Falls Church, Virginia, 1990: p. 39-42.

Godsy, E.M., Goerlitz, D.F., and Grbic'-Galic', D., 1992,

Anaerobic biodegradation of creosote contaminants in natural and simulated ground water ecosystems: Ground Water, v. 30, p. 232-242.

Godsy, E.M., Goerlitz, D.F., and Grbic'-Galic', D., 1987,

Anaerobic biodegradation of creosote contaminants in natural and simulated ground-water ecosystems, in Franks, B.J., ed., U.S. Geological Survey Program on Toxic Waste--Ground-Water Contamination--Proceedings of the third technical meeting, Pensacola, Florida, March 23-27, 1987: U.S. Geological Survey Open-File Report 87-109, p. A-17-A-19.

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Cod, Massachusetts: Princeton, N.J., Princeton University, Department of Civil Engineering and Operations Research, unpublished M.S. thesis, 266 p.

Brown, J.G., Bassett, R.L., and Glynn, P.D., 1998,

Analysis and simulation of reactive transport of metal contaminants in ground water in Pinal Creek Basin, Arizona, in Steefel, C.I., and Van Cappellen, P., eds., Special Issue--Reactive Transport Modeling of Natural Systems: New York, Elsevier, Journal of Hydrology, v. 209, p. 225-250.

Yen, S., Liu, S., and Kolpin, D.W., 1996,

Analysis of nitrate in near-surface aquifers in the midcontinental United States--An application of the inverse hyperbolic sine Tobit model: Water Resources Research, v. 32, no. 10, p. 3003-3011, 96WR02102, doi:10.1029/96WR02102.

Moench, A.F., and Kharaka, Y.K., 2001,

Analytical model for deep well injection of cold brine into a hot aquifer, in Cidu, R., ed., Proceedings of the Tenth International Symposium WRI-10, Villasimius, Italy, June 10-15, 2001: A.A. Balkema, v. 1, p. 193-196.

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.

Leonard, R.A., and Knisel, W.G., 1989,

Application of a model to evaluate agrichemical loading to ground water at the Plains, Georgia, research site, in Mallard, G.E., and Ragone, S.E., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Phoenix, Arizona, September 26-30, 1988: U.S. Geological Survey Water-Resources Investigations Report 88-4220, p. 639.

Tiedeman, C.R., Kernodle, J.M., and McAda, D.P., 1998,

Application of nonlinear regression methods to a ground-water flow model of the Albuquerque Basin, New Mexico: U.S. Geological Survey Water-Resources Investigations Report 98-4172, 90 p.

Davis, J.A., and Curtis, G.P., 2003,

Application of surface complexation modeling to describe uranium (VI) adsorption and retardation at the uranium mill tailings site at Naturita, Colorado: U.S. Nuclear Regulatory Commission Report NUREG CR-6820.

Leonard, R.A., Knisel, W.G., Davis, F.M., and Truman, C.C., 1991,

Application of the gleams model at the Plains, Georgia, agricultural-management site, in Mallard, G.E., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Monterey, California, March 11-15, 1991: U.S. Geological Survey Water-Resources Investigations Report 91-4034, p. 601-604.

Walton-Day, K., Runkel, R.L., Kimball, B.A., and Bencala, K.E., 1999,

Application of the solute-transport models OTIS and OTEQ and implications for remediation in a watershed affected by acid mine drainage, Cement Creek, Animas River Basin, Colorado, 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 1 of 3--Contamination from Hardrock Mining: U.S. Geological Survey Water-Resources Investigations Report 99-4018A, p. 37-46.

Walton-Day, K., Runkel, R.L., Kimball, B.A., and Bencala, K.E., 2000,

Application of the solute-transport models OTIS and OTEQ and implications for remediation in a watershed affected by acid mine drainage, Cement Creek, Animas River basin, 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. 389-399.

Rathbun, R.E., and Tai, D.Y., 1988,

Application of the two-film model to the volatilization of acetone and t-butyl alcohol from water as a function of temperature: U.S. Geological Survey Water-Supply Paper 2318, 41 p.

Day-Lewis, F.D., Singha, K., and Binley, A., 2005,

Applying petrophysical models to radar travel time and electrical resistivity tomograms--Resolution-dependent limitations: Journal of Geophysical Research, v. 110, no. B08206, p. 17, B08206, doi:10.1029/2004JB003569.

Waite, T.D., Davis, J.A., Fenton, B.R., and Payne, T.E., 2000,

Approaches to modelling uranium (VI) adsorption on natural mineral assemblages: Radiochimica Acta, v. 88, p. 687-696.

Davis, J.A., Meece, D.E., Kohler, M., and Curtis, G.P., 2004,

Approaches to surface complexation modeling of uranium(VI) adsorption on aquifer sediments: Geochimica et Cosmochimica Acta, v. 68, p. 3621-3641, doi:10.1016/j.gca.2004.03.003.

Gorelick, S.M., Voss, C.I., Gill, P.E., Murray, W., Saunders, M.S., and Wright, M.H., 1984,

Aquifer reclamation design--The use of contaminant transport simulation combined with nonlinear programming: Water Resources Research, v. 20, no. 4, p. 415-427, 3W1963, doi:10.1029/WR020i004p00415.

Stollenwerk, K.G., Breit, G.N., Welch, A.H., Yount, J.C., Whitney, J.W., Foster, A.L., Uddin, M.N., Majumder, R.K., and Ahmed, N., 2007,

Arsenic attenuation by oxidized aquifer sediments in Bangladesh: Science of the Total Environment, v. 379, no. 2-3, p. 133-150, doi:10.1016/j.scitotenv.2006.11.029 (Arsenic in the Environment, Biology and Chemistry--Arsenic in the Environment Special Issue, Bhattacharya, P., Welch, A.H., Stollenwerk, K.G., McLaughlin, M.J., Bundschuh, J., and Panaullah, G., eds.).

Welch, A.H., and Stollenwerk, K.G., eds., 2003,

Arsenic in ground water--Geochemistry and occurrence: Boston, Kluwer Academic Publishers, 475 p., ISBN:978-1-4020-7317-5,

Nordstrom, D.K., and Archer, D.G., 2003,

Arsenic thermodynamic data and environmental geochemistry, in Welch, A.H., and Stollenwerk, K.G., eds., Arsenic in ground water--Geochemistry and Occurrence: Boston, Kluwer Academic Publishers, p. 1-25.

Davis, J.A., Yabusaki, S.B., Steefel, C.I., Zachara, J.M., Curtis, G.P., Redden, G.P., Criscenti, L.J., and Honeyman, B.D., 2004,

Assessing conceptual models for subsurface reactive transport of inorganic contaminants: Eos, v. 85, no. 44, p. 449-455.

Konikow, L.F., and Swain, L.A., 1990,

Assessment of predictive accuracy of a model of artificial recharge effects in the Upper Coachella Valley, Calif., in Simpson, E.S., and Sharp, J.M., Jr., eds., Selected papers on hydrogeology, 1989 IGC Meeting, Proceedings, Washington, D.C., 1989: International Association of Hydrogeologists, v. 1, p. 433-449.

Liu, S., Yen, S., and Kolpin, D.W., 1996,

Atrazine concentrations in near-surface aquifers--A censored regression approach: Journal of Environmental Quality, v. 25, no. 5, p. 992-999.

Scott, D.T., Gooseff, M.N., Bencala, K.E., and Runke., R.L., 2003,

Automated calibration of a stream solute transport model--Implications for interpretation of biogeochemical parameters: Journal of the North American Benthological Society, v. 22, no. 4, p. 492-510.

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.

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.

Nordstrom, D.K., 1988,

Book review--"Coupled processes associated with nuclear waste repositories edited by Chin-Fu Tsang, Academic Press, 1987, 801 pp. (ISBN 0127016201)": Geochimica et Cosmochimica Acta, v. 52, no. 8, p. 2185, doi:10.1016/0016-7037(88)90201-3.

Hsieh, P.A., 2000,

A brief survey of hydraulic tests in fractured rocks, in Faybishenko, B., Witherspoon, P.A., and Benson, S.M., eds., American Geophysical Union Geophysical Monograph 122: Washington, D.C., p. 59-66.

Pfannkuch, H.O., 1987,

Bulk and distributed parameter mass-transfer models for determination of the source strength at an oil spill/ground-water interface, in Franks, B.J., ed., U.S. Geological Survey Program on Toxic Waste--Ground-Water Contamination--Proceedings of the third technical meeting, Pensacola, Florida, March 23-27, 1987: U.S. Geological Survey Open-File Report 87-109, p. C-11-C-12.

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.

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.

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.

Peng, W.S., Hampton, D.R., Benegar, J.J., Kambham, K.K.R., and Konikow, L.F., 1998,

Can MODFLOW-based contaminant transport models predict breakthrough?, in Proceedings of the MODFLOW-98 Conference, Golden, Colorado, October 1998: p. 363-370.

Peng, W.-S., Hampton, D.R., Konikow, L.F., Kambham, K.K.R., and Benegar, I.J., 2000,

Can contaminant transport models predict breakthrough?: Ground Water Monitoring and Remediation, v. 20, p. 104-113.

Domenico, P.A., and Schwartz, F.W., 1990,

Case study in the application of a numerical model, in Domenico, P.A., and Schwartz, F.W., eds., Physical and chemical hydrogeology: New York, John Wiley and Sons, p. 665-670 (section 17.5), ISBN:047150744X.

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.

Paillet, F.L., 1999,

Characterizing fractured-zone flow using numerical flow-log models, in Amadei, B., Kranz, R.L., Scott, G.A., and Smeallie, P.H., eds., Rock Mechanics for Industry--Proceedings of the 37th U.S. Rock Mechanics Symposium, June 6-9, 1999: Rotterdam, Netherlands, A.A. Balkema, v. 2, p. 819-826.

Nordstrom, D.K., 1991,

Chemical modeling of acid mine waters in the Western United States, in Mallard, G.E., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Monterey, California, March 11-15, 1991: U.S. Geological Survey Water-Resources Investigations Report 91-4034, p. 534-538.

Bekins, B.A., Warren, E., and Godsy, E.M., 1997,

Comparing zero and first order approximations to the Monod Model, in Alleman, B.C., and Leeson, A., eds., In Situ and On Site Bioremediation--Procedings of the Fourth International Symposium on In Situ And On-Site Bioremediation, New Orleans, La., April 28-May 1, 1997: Columbus, Ohio, Battelle Press, v. 5, p. 547-552 (Contact The Conference Group Inc. for information on the availability of the proceedings.).

Curtis, G.P., 2003,

Comparison of approaches for simulating reactive solute transport involving organic degradation reactions by multiple terminal electron acceptors: Computers and Geosciences, v. 29, no. 3, p. 319-329, doi:10.1016/S0098-3004(03)00008-6.

Squillace, P.J., and Pollock, D.W., 1996,

Comparison of simulated and observed movement of bank-storage water adjacent to the Cedar River, Iowa, 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. 525-534.

Bekins, B.A., Warren, E., and Godsy, E.M., 1998,

A comparison of zero-order, first-order, and Monod biotransformation models: Ground Water, v. 36, no. 2, p. 261-268.

Abrams, R.H., and Loague, K., 2000,

A compartmentalized solute transport model for redox zones in contaminated aquifers--1, Theory and development: Water Resources Research, v. 36, no. 8, p. 2001-2013, 2000WR900110, doi:10.1029/2000WR900110.

Abrams, R.H., and Loague, K., 2000,

A compartmentalized solute transport model for redox zones in contaminated aquifers--2, Field-scale simulations: Water Resources Research, v. 36, no. 8, p. 2015--2029, 10.1029/2000WR900111, doi:10.1029/2000WR900111.

Palandri, J.L., and Kharaka, Y.K., 2004,

A compilation of rate parameters of water-mineral interaction kinetics for application to geochemical modeling: U.S. Geological Survey Water-Resources Investigations Report 2004-1068, 64 p.

Uncles, R.J., and Peterson, D.H., 1995,

A computer model of long-term salinity in San Francisco Bay--Sensitivity to mixing and inflows: Environmental International, v. 21, no. 5, p. 647-656.

Hsieh, P.A., Shapiro, A.M., and Tiedeman, C.R., 1999,

Computer simulation of fluid flow in fractured rocks at the Mirror Lake FSE well field, 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. 777-781.

Goode, D.J., Hsieh, P.A., Shapiro, A.M., Wood, W.W., and Kraemer, T.F., 1993,

Concentration history during pumping from a leaky aquifer with stratified initial concentration, in Shen, H.W., Su, S.T., and Wen, F., eds., Proceedings of the 1993 National Conference on Hydraulic Engineering, San Francisco, Calif., July 25-30, 1993: American Society of Civil Engineers, p. 29-35.

Pollock, D.W., and Zehner, H.H., 1981,

A conceptual analysis of the ground water flow system at the Maxey Flats radioactive waste burial site, Fleming County, Kentucky, in Little, C.A., and Stratton, L.E., eds., Modeling and low-level waste management--An interagency workshop: Oak Ridge National Laboratory (ORO-821), p. 197-213.

Thurman, E.M., 1987,

A conceptual chemical process model for sewage contamination of a sand and gravel aquifer, in Franks, B.J., ed., U.S. Geological Survey Program on Toxic Waste--Ground-Water Contamination--Proceedings of the third technical meeting, Pensacola, Florida, March 23-27, 1987: U.S. Geological Survey Open-File Report 87-109, p. B-37-B-42.

Shapiro, A.M., Wood, W.W., Busenberg, E., Drenkard, S., Plummer, L.N., Torgersen, T., and Schlosser, P., 1996,

A conceptual model for estimating regional ground-water velocity in bedrock of the Mirror Lake area, Grafton County, New Hampshire, 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. 171-177.

Smith, C.N., Parrish, R.S., and Brown, D.S., 1991,

Conducting field studies for testing pesticide leaching models: International Journal of Environmental Analytical Chemistry, v. 39, p. 3-21.

Harvey, R.W., 1989,

Considerations for modeling transport of bacteria in contaminated aquifers, in Abriola, L.M., ed., Groundwater Contamination, Proceedings of Symposium, Third Scientific Assembly, International Association of Hydrological Sciences, Baltimore, Maryland, May 10-19, 1989: Wallingsford, England, International Association of Hydrological Sciences Press, International Association of Hydrological Sciences Publication 185, p. 75-82.

Konikow, L.F., Sanford, W.E., and Campbell, P.J., 1997,

Constant-concentration boundary condition--Lessons from the HYDROCOIN variable-density groundwater benchmark problem: Water Resources Research, v. 33, no. 10, p. 2253-2262.

Smith, C.N., Brown, D.S., Parrish, D.S., Asmussen, L.E., and Hicks, D.W., 1990,

Cooperative approach for field validating agricultural chemical transport models, in Proceedings of the American Society of Agronomy, San Antonio, Tex.

Curtis, G.P., Cozzarelli, I.M., Baedecker, M.J., and Bekins, B.A., 1999,

Coupled biogeochemical modeling of ground water contamination at the Bemidji, Minnesota, 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. 153-158.

Molins, S., and Mayer, K.U., 2007,

Coupling between geochemical reactions and multicomponent gas and solute transport in unsaturated media--A reactive transport modeling study: Water Resources Research, v. 45, no. 5, W05435, doi:10.1029/2006WR005206.

Baedecker, M.J., Cozzarelli, I.M., Siegel, D.I., Bennett, P.C., and Eganhouse, R.P., 1993,

Crude oil in a shallow sand and gravel aquifer--III, Biogeochemical reactions and mass balance modeling in anoxic ground water: Applied Geochemistry, v. 8, no. 6, p. 569-586, doi:10.1016/0883-2927(93)90012-6.

Hunt, R.J., Steuer, J.J., Mansor, M.T.C., and Bullen, T.D., 2001,

Delineating a recharge area for a spring using numerical modeling, Monte Carlo techniques, and geochemical investigation: Ground Water, v. 39, no. 5, p. 702-712, doi:10.1111/j.1745-6584.2001.tb02360.x.

Pabich, W.J., 2001,

Denitrification of anthropogenic nitrogen in groundwater--Measurement and modeling using stable isotopic and mass balance approaches: Cambridge, Massachusetts Institute of Technology, Department of Civil and Environmental Engineering, unpublished Ph.D. thesis, 188 p.

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.

Broshears, R.E., Runkel, R.L., and Kimball, B.A., 1994,

Development and application of a reactive solute transport model for trace metals in mountain streams, in Dutton, A.R., ed., Toxic Substances and the Hydrologic Sciences--Proceedings of the conference, Austin, Texas, April 10-13, 1994: Minneapolis, Minn., American Institute of Hydrology, p. 19-34.

Gandhi, N., Bhavsar, S.P., Diamond, M.L., Kuwabara, J.S., Marvin-DiPasquale, M., and Krabbenhoft, D.P., 2007,

Development of a mercury speciation, fate and biotic uptake (BIOTRANSPEC) model--Application to Lahontan Reservoir (Nevada, USA): Environmental Toxicology and Chemistry, v. 26, no. 11, p. 2,260-2,273, doi:10.1897/06-468R.1.

McBride, G.B., Vant, W.N., Cloern, J.E., and Liley, J.B., 1993,

Development of a model of phytoplankton blooms in Manukau Harbour: National Institute of Water and Atmospheric Research Ecosystems Publication 3, 52 p.

Knowles, N., Cayan, D., Ingram, L., Peterson, D., and Uncles, R., 1997,

Diagnosing the flood of 1997 in San Francisco Bay with observation and model results: Interagency Ecology Newsletter (DWR), v. 10, no. 3, p. 28-31.

Wood, T.M., Baptista, A.M., Kuwabara, J.S., and Flegal, A.R., 1995,

Diagnostic modeling of trace metal partitioning in South San Francisco Bay: Limnology and Oceanography, v. 40, no. 2, p. 345-358.

LeBlanc, D.R., 1984,

Digital modeling of solute transport in a plume of sewage-contaminated ground water, in LeBlanc, D.R., ed., Movement and fate of solutes in a plume of sewage-contaminated ground water, Cape Cod, Massachusetts--U.S. Geological Survey Toxic Waste Ground-Water Contamination Program--Papers presented at the toxic waste technical meeting, Tucson, Arizona, March 20-22, 1984: U.S. Geological Survey Open-File Report 84-475, p. 11-46.

Merritt, M.L., 1984,

Digital simulation of the regional effects of subsurface injection of liquid waste near Pensacola, Florida: U.S. Geological Survey Water-Resources Investigations Report 84-4042, 73 p.

Konikow, L.F., 1992,

Discussion of "The modeling process and model validation" by Chin-Fu Tsang: Ground Water, v. 30, no. 4, p. 622-623.

Lucas, L.V., Cloern, J.E., Koseff, J.R., Monismith, S.G., and Thompson, J.K., 1998,

Does the Sverdrup critical depth model explain bloom dynamics in estuaries?: Journal of Marine Research, v. 56, no. 2, p. 375-415.

Chang, F.H., Bullert, J., and Denzin, B., 1990,

Effect of environmental parameters on biodegradation of crude oil and model hydrocarbon in groundwater environment, in Flierman, C.B., and Hazen, T.C., eds., Proceedings of the First International Symposium on Microbiology of the Deep Subsurface, Orlando, Fla., January 15-18, 1990: p. 7-53-7-65.

Hill, M.C., and Tiedeman, C.R., 2007,

Effective groundwater model calibration--With analysis of data, sensitivities, predictions, and uncertainty: Hoboken, John Wiley and Sons, 455 p., ISBN:978-0-471-77636-9.

Masterson, J.P., and Walter, D.A., 1996,

Effects of changes in aquifer properties on simulated fluid-particle pathlines, Cape Cod, Massachusetts, 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. 289-296.

Church, C.D., Tratnyek, P.G., Pankow, J.F., Landmeyer, J.E., Baehr, A.L., Thomas, M.A., and Schirmer, M., 1999,

Effects of environmental conditions on MTBE degradation in model column aquifers, 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. 93-101.

Scholl, M.A., 2000,

Effects of heterogeneity in aquifer permeability and biomass on biodegradation rate calculations--Results from numerical simulations: Ground Water, v. 38, no. 5, p. 702-712.

Lucas, L.V., and Cloern, J.E., 2002,

Effects of tidal shallowing and deepening on phytoplankton production dynamics--a modeling study: Esturaries, v. 25, p. 497-507.

Cloern, J.E., Grenz, C., and Vidergar-Lucas, L., 1995,

An empirical model of the phytoplankton chlorophyll/carbon ratio--The conversion factor between productivity and growth rate: Limnology and Oceanography, v. 40, no. 7, p. 1313-1321.

Walvoord, M.A., and Stonestrom, D.A., 2004,

Enhanced gas-phase transport in a deep unsaturated zone, Amargosa Desert (U.S.A.), in Kovar, K., Hrkal, Z., and Bruthans, J., eds., Proceedings of International Conference on Finite-element Models, MODFLOW, and More, Karlovy Vary, Czech Republic, September 12-16, 2004: IAHS, p. 227-230.

Versteeg, D.J., Alder, A.C., Cunningham, V.L., Kolpin, D.W., Murray-Smith, R., and Ternes, T., 2005,

Environmental exposure modeling and monitoring of human pharmaceutical concentrations in the environment, in Williams, R.T., ed., Human pharmaceuticals - assessing the impacts on aquatic ecosystems: SETAC Press, p. 71-110, ISBN:978-1-880611-82-1.

Troutman, B.M., 1985,

Errors and parameter estimation in precipitation runoff modeling--1, Theory: Water Resources Research, v. 21, no. 8, p. 1195-1213, 5W0350, doi:10.1029/WR021i008p01195.

Troutman, B.M., 1985,

Errors and parameter estimation in precipitation runoff modeling--2, Case Study: Water Resources Research, v. 21, no. 8, p. 1214-1222, 5W0351, doi:10.1029/WR021i008p01214.

Widdowson, M.A., Mendez, E., and Chapelle, F.H., 2007,

Estimating cleanup times for groundwater contamination remediation strategies: Journal of the American Water Works Association, v. 99, no. 3, p. 40-42, 44, 46.

Battaglin, W.A., Ulery, R.L., Winterstein, T., and Welborn, T., 2003,

Estimating the susceptibility of surface water in Texas to nonpoint-source contamination by use of logistic regression modeling: U.S. Geological Survey Water-Resources Investigations Report 03-4205, 24 p.

Battaglin, W.A., 1992,

Estimation of agricultural chemical mass in ground water by volume modeling techniques: Golden, Colorado School of Mines, M.E. thesis, ER-4284, 157 p.

Sanford, W.E., Plummer, L.N., McAda, D.P., Bexfield, L.M., and Anderholm, S.K., 2000,

Estimation of hydrologic parameters for the ground-water model of the Middle Rio Grande Basin using carbon-14 and water-level data, 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.

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.

Runkel, R.L., and Kimball, B.A., 2002,

Evaluating remedial alternatives for an acid mine drainage stream--Application of a reactive transport model: Environmental Science and Technology, v. 36, no. 5, p. 1093-1101, doi:10.1021/es0109794.

Ball, J.W., Runkel, R.L., and Nordstrom, D.K., 2004,

Evaluating remedial alternatives for the Alamosa River and Wightman Fork, near Summitville Mine, Colorado--Application of a reactive transport model to low- and high-flow simulations, in Zannetti, P., ed., Environmental Sciences and Environmental Computing: The EnviroComp Institute, v. II, p. 1-54.

Lane, J.W., Jr., Buursink, M.L., Haeni, F.P., and Versteeg, R.J., 2000,

Evaluation of ground-penetrating radar to detect free-phase hydrocarbons in fractured rocks--Results of numerical modeling and physical experiments: Ground Water, v. 38, no. 6, p. 929-938.

Tiedeman, C.R., and Hsieh, P.A., 2003,

Evaluation of longitudinal dispersivity estimates from forced-gradient tracer tests in heterogeneous aquifers, in Kovar, K., and Zbynek, H., eds., Calibration and Reliability in Groundwater Modelling--A Few Steps Closer to Reality: IAHS Publication 277, p. 168-174.

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.

Eychaner, J.H., 1988,

Evolution of acidic ground-water contamination in a copper-mining area in Arizona, in Ouazar, D., Brebbia, C.A., and Stout, G.E., eds., Water Quality, Planning and Management, v. 6, of Computer Methods and Water Resources--Proceedings of the First International Conference, Morocco, 1988: Southampton, United Kingdom, Computational Mechanics Publications, p. 291-302.

Smith, K.S., Ficklin, W.H., and Ranville, J.F., 1990,

Examples and modeling of trace metal water/sediment partitioning in Colorado streams affected by acid mine drainage, in Gough, L.P., ed., Environmental forum 1990--Geoscience investigations that emphasize chemical, physical, and biological ecosystem processes: U.S. Geological Survey Open-File Report 90-288, p. 12.

Peterson, D.H., Cayan, D.R., Smith, R.E., Dettinger, M.D., and Riddle, L., 2001,

An experimental forecast of maximum daily snowmelt discharge for the year 2001: Scripps Institution of Oceanography, California Applications Program, December 18, 2001.

Rathbun, R.E., Stephens, D.W., Shultz, D.J., and Tai, D.Y., 1989,

Fate of acetone in an outdoor model stream in southern Mississippi: Journal of Hydrology, v. 104, p. 181-209.

Rathbun, R.E., Stephens, D.W., and Tai, D.Y., 1991,

Fate of acetone in an outdoor model stream with a nitrate supplement, southern Mississippi: Journal of Hydrology, v. 123, p. 225-242.

Herkelrath, W.N., Essaid, H.I., and Hess, K.M., 1991,

Field and modeling studies of immiscible fluid flow above a contaminted water-table aquifer, in Proceedings of the International Hydrology and Water Resources Symposium 1991, Challenges for Sustainable Development, Perth, Australia, October 2-4, 1991: p. 424-428.

Essaid, H.I., Herkelrath, W.N., and Dillard, L.A., 1994,

Field and modeling studies of multiphase fluid flow at the Bemidji, Minnesota crude-oil spill site, in Dutton, A.R., ed., Toxic Substances and the Hydrologic Sciences: Minneapolis, American Institute of Hydrology, p. 52-68.

Hult, M.F., Landon, M.K., and Pfannkuch, H.O., 1991,

Field validation of conceptual models of mobilization and transport of volatile petroleum derivatives in the unsaturated zone near Bemidji, Minnesota, in Mallard, G.E., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Monterey, California, March 11-15, 1991: U.S. Geological Survey Water-Resources Investigations Report 91-4034, p. 621-626.

Goode, D.J., and Appel, C.A., 1993,

Finite-difference interblock transmissivity for unconfined aquifers and for aquifers having smoothly varying transmissivity: U.S. Geological Survey Water-Resources Investigations Report 92-4124, 79 p.

Paillet, F.L., 1998,

Flow modeling and permeability estimation using borehole flow logs in heterogeneous fractured formations: Water Resources Research, v. 34, no. 5, p. 997-1010, 98WR00268, doi:10.1029/98WR00268.

Reddy, M.M., and Aiken, G.R., 2001,

Fluvic acid-sulfide ion competition for mercury ion binding in the Florida everglades: Water, Air, and Soil Pollution, v. 132, p. 89-104, doi:10.1023/A:1012073503678.

Presser, T.S., and Luoma, S.N., 2007,

Forecasting selenium discharges to the San Francisco Bay-Delta Estuary--Ecological effects of a proposed San Luis Drain extension: Professional Paper 1646, 196 p.

Luoma, S.N., and Presser, T.S., 2000,

Forecasting selenium discharges to the San Francisco Bay-Delta Estuary--Ecological effects of a proposed San Luis drain extension: U.S. Geological Survey Open-File Report 00-416, 256 p.

Peterson, D.H., Smith, R.E., Dettinger, M.D., Cayan, D.R., Hager, S.W., and Schemel, L.E., 1999,

Forecasting spring discharge in the west--A step towards forecasting stream chemistry, 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 2 of 3--Contamination of Hydrologic Systems and Related Ecosystems: U.S. Geological Survey Water-Resources Investigations Report 99-4018B, p. 51-58.

Dettinger, M.D., Peterson, D.H., Diaz, H.F., and Cayan, D.R., 1997,

Forecasting the spring runoff pulses from the Sierra Nevada: Interagency Ecosystem Program for the Sacramento-San Juaquin Estuary Newsletter, v. 10, no. 3, Summer 1997, p. 32-35.

Paillet, F.L., and Kapucu, K., 1989,

Fracture characterization and fracture-permeability estimates from geophysical logs in the Mirror Lake Watershed, New Hampshire: U.S. Geological Survey Water-Resources Investigations Report 89-4058, 49 p.

Kuwabara, J.S., Topping, B.R., Woods, P.F., and Carter, J.L., 2007,

Free zinc ion and dissolved orthophosphate effects on phytoplankton from Coeur d'Alene Lake, Idaho: Environmental Science and Technology, v. 41, no. 8, p. 2811-2817, doi:10.1021/es062923l.

Konikow, L.F., 2006,

From data gathering to ground-water modeling, in Sánchez-Vila, X., Cabrera, M.C., and Valverde, M., eds., Proceedings of the IAH Workshop From Data Gathering and Groundwater Modelling to Integrated Management, Alicante, Spain, October 4-8, 2005: Madrid, Instituto Geológico y Minero de España, p. 17-31.

Dillard, L.A., Essaid, H.I., and Blunt, M.J., 2001,

A functional relation for field-scale nonaqueous phase liquid dissolution developed using a pore network model: Journal of Contaminant Hydrology, v. 48, no. 1-2, p. 89-119, doi:10.1016/S0169-7722(00)00171-6.

See, R.B., Naftz, D.L., and Qualls, C.L., 1992,

GIS-assisted regression analysis to identify sources of selenium in streams: Water Resources Bulletin, v. 28, no. 2, p. 315-330, doi:10.1111/j.1752-1688.1992.tb03997.x.

Walter, D.A., Rea, B.A., Stollenwerk, K.G., and Savoie, J., 1995,

Geochemical and hydrologic controls on phosphorus transport in a sewage-contaminated sand and gravel aquifer near Ashumet Pond, Cape Cod, Massachusetts: U.S. Geological Survey Open-File Report 95-381, 89 p.

Waber, N., and Nordstrom, D.K., 1992,

Geochemical modeling of granitic ground waters at the Stripa site (Sweden) using a mass balance approach, in Kharaka, Y.K., and Maest, A.S., eds., Proceedings of the 7th International Symposium on Water-Rock Interaction, Park City, Utah, July 13-18, 1992: A.A. Balkema, p. 243-246.

Nordstrom, D.K., 1995,

Geochemical modeling of natural aquatic systems--Applications and limitations, in Stevens, P.R., and Nicholson, T.J., eds., Joint U.S. Geological Survey, U.S. Nucelar Regulatory Commission Workshop on Research Related to Low-Level Radioactive Waste Disposal, May 4-6, 1993, National Center, Reston, Virginia: U.S. Geological Survey Water-Resources Investigations Report 95-4015, p. 126-131.

Baedecker, M.J., and Cozzarelli, I.M., 1991,

Geochemical modeling of organic degradation reactions in an aquifer contaminated with crude oil, in Mallard, G.E., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Monterey, California, March 11-15, 1991: U.S. Geological Survey Water-Resources Investigations Report 91-4034, p. 627-632.

Alpers, C.N., and Nordstrom, D.K., 1999,

Geochemical modeling of water-rock interactions in mining environments, in Plumlee, G.S., and Logsdon, M.J., eds., The environmental geochemistry of mineral deposits--Part 1. Processes, methods and health issues: Reviews in Economic Geology, v. 6A, p. 289-324.

Plummer, L.N., 1992,

Geochemical modeling--Past, present, future, in Kharaka, Y., and Maest, A.S., eds., Low temperature environments, v. 1 of Water-rock interaction--Proceedings of the 7th International Symposium on Water-Rock Interaction--WRI-7, Park City, Utah, July 9-23, 1992: Rotterdam, Balkema, p. 23-33.

Parkhurst, D.L., and Plummer, L.N., 1993,

Geochemical models (chapter 9), in Alley, W.M., ed., Regional Ground-Water Quality: New York, Van Nostrand Reinhold, p. 199-225.

Stollenwerk, K.G., 2003,

Geochemical processes controlling transport of arsenic in groundwater--A review of adsorption, in Welch, A.H., and Stollenwerk, K.G., eds., Arsenic in ground water--Geochemistry and occurrence: Boston, Kluwer Academic Publishers, p. 67-100.

Engesgaard, P., and Kipp, K.L., 1992,

A geochemical transport model for redox-controlled movement of mineral fronts in groundwater flow systems--A case of nitrate removal by oxidation of pyrite: Water Resources Research, v. 28, no. 10, p. 2829-2843, 92WR01264, doi:10.1029/92WR01264.

Brown, J.G., Glynn, P.D., and Bassett, R.L., 1999,

Geochemistry and reactive-transport of metal contaminants in ground water, Pinal Creek Basin, Arizona, 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 1 of 3--Contamination from Hardrock Mining: U.S. Geological Survey Water-Resources Investigations Report 99-4018A, p. 141-153.

McMahon, P.B., and Chapelle, F.H., 1991,

Geochemistry of dissolved inorganic carbon in a coastal plain aquifer--2, Modeling carbon sources, sinks, and śC evolution: Journal of Hydrology, v. 127, no. 1-4, p. 109-135.

Day-Lewis, F.D., Hsieh, P.A., Shapiro, A.M., and Gorelick, S.M., 1999,

Geostatistical simulation of high-transmissivity zones at the Mirror Lake Site in New Hampshire--Conditioning to hydraulic information, 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. 685-693.

Nordstrom, D.K., McNutt, R.H., Puigdomenech, I., Smellie, J.A.T., and Wolf, M., 1992,

Ground water chemistry and geochemical modeling of water-rock interactions at the Osamu Utsumi mine and the Morro do Ferro analogue study sites, Pocos de Caldas, Minas Gerais, Brazil: Journal of Geochemical Exploration, v. 45, no. 1-3, p. 249-287, doi:10.1016/0375-6742(92)90127-T

Goode, D.J., 1998,

Ground-water age and atmospheric tracers: Simulation studies and analysis of field data from the Mirror Lake site, New Hampshire: Princeton, N.J., Princeton University, Department Civil Engineering and Operations Research, Ph.D. thesis, 194 p.

Ryan, B.J., and Kipp, K.L., Jr., 1997,

Ground-water flow and contaminant transport at a radioactive-materials processing site, Wood River Junction, Rhode Island: U.S. Geological Survey Professional Paper 1571, 89 p.

Bredehoeft, J.D., and Konikow, L.F., 1993,

Ground-water models--Validate or invalidate: Ground Water, v. 31, no. 2, p. 178-179.

Hanson, R.T., and Dettinger, M.D., 2005,

Ground-water/surface-water responses to global climate simulations, Santa Clara-Calleguas basin, Ventura County, California, 1950-93: Journal of the American Water Resources Association, v. 41, no. 3, p. 517-536, doi:10.1111/j.1752-1688.2005.tb03752.x.

Konikow, L.F., and Mercer, J.M., 1988,

Groundwater flow and transport modeling: Journal of Hydrology, v. 100, no. 2, p. 379-409.

Konikow, L.F., and Patten, E.P., Jr., 1985,

Groundwater forecasting, in Anderson, M.G., and Burt, T.P., eds., Hydrological forecasting: New York, John Wiley and Sons Ltd., p. 221-270.

Konikow, L.F., Reilly, T.E., Barlow, P.M., and Voss, C.I., 2006,

Groundwater modeling (chapter 23), in Delleur, J.W., ed., The Handbook of Groundwater Engineering (2nd ed.): Boca Raton, CRC Press, ISBN:9780849343162.

Konikow, L.F., and Reilly, T.E., 1998,

Groundwater modeling, in Delleur, J., ed., The Handbook of Groundwater Engineering: Boca Raton, CRC Press.

Sanford, W.E., Konikow, L.F., Rowe, G.L., and Brantley, S.L., 1995,

Groundwater transport of crater-lake brine at Poas Volcano, Costa Rica: Journal of Volcanology and Geothermal Research, v. 64, p. 269-293, doi:10.1016/0377-0273(94)00080-Z.

Cloern, J.E., 2007,

Habitat connectivity and ecosystem productivity--Implications from a simple model: The American Naturalist, v. 169, no. 1, p. E21-E33, doi:10.1086/510258.

Yager, R.M., Kappel, W.M., and Plummer, L.N., 2007,

Halite Brine in the Onondaga Trough near Syracuse, New York--Characterization and Simulation of Variable-Density Flow: U.S. Geological Survey Scientific Investigations Report 2007-5058, 40 p.

Lewis-Brown, J.C., Carleton, G.B., and Imbrigiotta, T.E., 2006,

Hydraulic and solute-transport properties and simulated advective transport of contaminated ground water in a fractured-rock aquifer at the Naval Air Warfare Center, West Trenton, New Jersey, 2003: U.S. Geological Survey Scientific Investigations Report 2005-5049, 32 p.

Sanford, W.E., Plummer, L.N., McAda, D.P., Bexfield, L.M., and Anderholm, S.K., 2004,

Hydrochemical tracers in the middle Rio Grande Basin, USA: 2. Calibration of a ground-water flow model: Hydrogeology Journal, v. 12, no. 4, p. 389-407, doi:10.1007/s10040-004-0326-4.

Miller, R.T., 1988,

Hydrogeology and preliminary regional flow modeling at the Bemidji, Minnesota, research site, in Ragone, S.E., ed., U.S. Geological Survey Program on Toxic Waste--Ground-Water Contamination--Proceedings of the second technical meeting, Cape Cod, Massachusetts, October 21-25, 1985: U.S. Geological Survey Open-File Report 86-481, p. C-11-C-16.

Neaville, C.C., 1991,

Hydrogeology and simulation of ground-water and surface-water flow in the Pinal Creek basin, Gila County, Arizona: Tucson, University of Arizona, M.S. thesis, 149 p.

Voronin, L.M., and Rice, D.E., 1996,

Hydrogeology and simulation of ground-water flow, Picatinny Arsenal and vicinity, Morris County, New Jersey: U.S. Geological Survey Water-Resources Investigations Report 96-4061, 64 p.

Petkewich, M.D., Parkhurst, D.L., Conlon, K.J., Campbell, B.G., and Mirecki, J.E., 2004,

Hydrologic and geochemical evaluation of aquifer storage recovery in the Santee Limestone/Black Mingo Aquifer, Charleston, South Carolina, 1998-2002: U.S. Geological Survey Scientific Investigations Report 2004-5046, 92 p.

Morin, R.H., 2005,

Hydrologic properties of coal beds in the Powder River Basin, Montana--I. Geophysical log analysis: Journal of Hydrology, v. 308, p. 227-241, doi:10.1016/j.jhydrol.2004.11.006.

Weeks, E.P., 2005,

Hydrologic properties of coal beds in the Powder River Basin, Montana--II. Aquifer test analysis: Journal of Hydrology, v. 308, p. 242-257, doi:10.1016/j.jhydrol.2004.11.002.

Simpson, J.J., Dettinger, M.D., Gerhke, F., McIntyre, T.J., and Hufford, G.I., 2004,

Hydrologic scales, cloud variability, remote sensing and models--Implications for forecasting snowmelt and streamflow: Weather and Forecasting, v. 19, p. 251-276, doi:10.1175/1520-0434(2004)019<0251:HSCVRS>2.0.CO;2.

Boyer, E.W., Hornberger, G.W., and Bencala, K.E., 1993,

Hydrological controls on the temporal variation of dissolved organic carbon in Deer Creek near Montezuma, Colorado, in McAleer, M., and Jakeman, A., eds., Proceedings of the 10th Biennial Conference of the Modeling and Simulation Society of Australia, December 6-10, 1993: The University of Western Australia, p. 501-506.

Mason, J.L., and Kipp., K.L., Jr., 1998,

Hydrology of the Bonneville Salt Flats, northwestern Utah, and the simulation of ground-water flow and solute transport in the shallow-brine aquifer: U.S. Geological Survey Professional Paper 1585, 108 p.

Miller, M.P., McKnight, D.M., Cory, R.M., Williams, M.W., and Runkel, R.L., 2006,

Hyporheic exchange and fulvic acid redox reactions in an alpine stream/wetland ecosystem, Colorado Front Range: Environmental Science and Technology, v. 40, no. 19, p. 5943-5949, doi:10.1021/es060635j.

Day-Lewis, F.D., Hsieh, P.A., and Gorelick, S.M., 2000,

Identifying fracture-zone geometry using simulated annealing and hydraulic-connection data: Water Resources Research, v. 36, no. 7, p. 1707-1721, 2000WR900073, doi:10.1029/2000WR900073.

Wright, D.L., Smith, D.V., Abraham, J.D., Hutton, R.S., Bond, E.K., Chi, T.J., Alaeddin, A.A., and Chew, W.C., 2000,

Imaging and modeling new VETEM data, in Noon, D.A., Stickley, G.F., and Longstaff, D., eds., Proceedings of the Eighth International Conference on Ground Penetrating Radar, Gold Coast, Queensland, Australia, May 23-26, 2000: University of Queensland, Cooperative Research Centre for Sensor Signal and Information Processing (CSSIP), p. 146-150.

LaBaugh, J.W., and Winter, T.C., 1984,

The impact of uncertainties in hydrologic measurement on phosphorus budgets and empirical models for two Colorado reservoirs: Limnology and Oceanography, v. 29, p. 322-339.

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.

Essaid, H.I., Cozzarelli, I.M., Eganhouse, R.P., Herkelrath, W.N., Bekins, B.A., and Delin, G.N., 2003,

Inverse modeling of BTEX dissolution and biodegradation at the Bemidji, MN crude-oil spill site: Journal of Contaminant Hydrology, v. 67, no. 1-4, p. 269-299, doi:10.1016/S0169-7722(03)00034-2.

Amos, R.T., and Mayer, K.U., 2006,

Investigating ebullition in a sand column using dissolved gas analysis and reactive transport modeling: Environmental Science and Technology, v. 40, p. 5361-5367, doi:10.1021/es0602501.

Dillard, L.A., 1998,

Investigating the physics of dissolution of nonaqueous phase liquids--simulation from pore network to field scale: Stanford, Calif., Stanford University, Ph.D. Thesis, 178 p.

Amos, R.T., and Mayer, K.U., 2006,

Investigating the role of gas bubble formation and entrapment in contaminated aquifers--Reactive transport modeling: Journal of Contaminant Hydrology, v. 87, p. 123-154, doi:10.1016/j.jconhyd.2006.04.008.

Konikow, L.F., and Ewing, R.C., 1999,

Is a probabilistic performance assessment enough?: Ground Water, v. 37, no. 4, p. 481-482.

McDonald, E.T., and Cheng, R.T., 1994,

Issues related to modeling the transport of suspended sediments in northern San Francisco Bay, California, in The proceedings of the Third International Conference on Estuarine and Coastal Modeling: Chicago, Illinois, American Society of Civil Engineers, p. 551-564.

Brown, J.G., and Glynn, P.D., 2003,

Kinetic dissolution of carbonates and Mn oxides in acidic water--measurement of in situ field rates and reactive transport modeling: Applied Geochemistry, v. 18, no. 8, p. 1225-1239, doi:10.1016/S0883-2927(03)00010-6.

O'Dell, C.H., 1988,

A laboratory investigation of the relationship between groundwater velocity and mass transfer from a simulated aromatic hydrocarbon spill at the water table interface: Minneapolis, University of Minnesota, M.S. thesis, 233 p.

MacDonald, D.G., 1992,

Laboratory simulation of protozoan transport through a sandy aquifer using carboxylated microspheres: Durham, University of New Hampshire, Department of Civil Engineering, unpublished B.S. thesis, 67 p.

McDonald, M.G., and Konikow, L.F., 2002,

Let there be standing--An editorial: The AGWSE Newszine, Newsletter of the Association of Ground Water Scientists and Engineers, v. February 2002.

Presser, T.S., and Luoma, S.N., 2004,

Linking selenium sources to ecosystems--San Francisco Bay-Delta model: U.S. Geological Survey Fact Sheet 2004-3091, 4 p.

Mueller, D.K., Ruddy, B.C., and Battaglin, W.A., 1997,

Logistic model of nitrate in streams of the upper-midwestern United States: Journal of Environmental Quality, v. 26, no. 5, p. 1223-1230.

English, C.A., Gartner, J.W., Smith, R.E., and Cheng, R.T., 1999,

A marine nowcast system for San Francisco Bay, California, 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 2 of 3--Contamination of Hydrologic Systems and Related Ecosystems: U.S. Geological Survey Water-Resources Investigations Report 99-4018B, p. 65-68.

Guo, L., 1992,

Mass transfer across an aromatic hydrocarbon-water interface in a porous medium--A laboratory study in a plate model: Minneapolis, University of Minnesota, M.S. thesis, 113 p.

Baehr, A.L., and Hult, M.F., 1987,

Mathematical modeling of hydrocarbon and oxygen transport coupled with microbial degradation in the unsaturated zone, in Franks, B.J., ed., U.S. Geological Survey Program on Toxic Waste--Ground-Water Contamination--Proceedings of the third technical meeting, Pensacola, Florida, March 23-27, 1987: U.S. Geological Survey Open-File Report 87-109, p. C-27-C-28.

Abbott, M.L., Susong, D.D., Krabbenhoft, D.P., and Rood, A.S., 2002,

Mercury deposition in snow near an industrial emission source in the western U.S. and comparison to ISC3 model predictions: Water, Air, and Soil Pollution, v. 139, no. 1-4, p. 95-114, doi:10.1023/A:1015856717964.

Godsy, E.M., Goerlitz, D.F., and Grbic'-Galic', D., 1992,

Methanogenic biodegradation of creosote contaminants in natural and simulated ground water ecosystems: Ground Water, v. 30, p. 232-242.

Parrish, R.S., and Smith, C.N., 1990,

A method for testing whether model predictions fall within a prescribed factor of true values, with an application to pesticide leaching: Ecological Modeling, v. 51, p. 59-72.

Chapelle, F.H., Widdowson, M.A., Brauner, J.S., Mendez, E., and Casey, C.C., 2003,

Methodology for estimating times of remediation associated with monitored natural attenuation: U.S. Geological Survey Water-Resources Investigations Report 03-4057, 51 p.

Chang, F.H., Noben, N.N., Brand, D., and Hult, M.F., 1988,

Microbial degradation of crude oil and some model hydrocarbons, in Ragone, S.E., ed., U.S. Geological Survey Program on Toxic Waste--Ground-Water Contamination--Proceedings of the second technical meeting, Cape Cod, Massachusetts, October 21-25, 1985: U.S. Geological Survey Open-File Report 86-481, p. C-33-C-42.

Karapanagioti, H., Gossard, C.M., Strevett, K.A., Kolar, R.L., and Sabatini, D.A., 2001,

Model coupling intraparticle diffusion/sorption, nonlinear sorption, and biodegradation processes: Journal of Contaminant Hydrology, v. 48, no. 1-2, p. 1-21, doi:1016/S0169-7722(00)00179-0.

Papoulias, D.M., Noltie, D.B., and Tillitt, D.E., 1999,

A model fish system to test chemical effects on sexual differentiation and development, 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 2 of 3--Contamination of Hydrologic Systems and Related Ecosystems: U.S. Geological Survey Water-Resources Investigations Report 99-4018B, p. 447-453.

Cunningham, K.M., and Goldberg, M.C., 1989,

A model for photolytic decomposition of toxic materials adsorbed onto iron oxyhydroxides in surface waters, in Mallard, G.E., and Ragone, S.E., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Phoenix, Arizona, September 26-30, 1988: U.S. Geological Survey Water-Resources Investigations Report 88-4220, p. 608.

Choi, J., Hulseapple, S.M., Conklin, M.H., and Harvey, J.W., 1998,

Modeling CO2 degassing and pH in a stream-aquifer system, in Steefel, C.I., and Van Cappellen, P., eds., Special Issue--Reactive Transport Modeling of Natural Systems: New York, Elsevier, Journal of Hydrology, v. 209, p. 297-310.

Glynn, P.D., 2003,

Modeling Np and Pu transport with a surface complexation model and spatially variant sorption capacities--implications for reactive transport modeling and performance assessments of nuclear waste disposal sites: Computers and Geosciences, v. 29, no. 3, p. 331-349, doi:10.1016/S0098-3004(03)00009-8.

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.

Knowles, N., Peterson, D.H., Uncles, R.J., and Cayan, D.R., 1995,

Modeling and predicting intertidal variations in the salinity field in the bay/delta: Interagency Ecological Studies Program Newsletter, p. 8-10.

Kim, B.E., Jackman, A.P., and Triska, F.J., 1992,

Modeling biotic uptake by periphyton and transient hyporrheic storage on nitrate in a natural stream: Water Resources Research, v. 28, no. 10, p. 2743-2752.

Warren, E., and Godsy, E.M., 1996,

Modeling breakthrough of nitrogen heterocyclic compounds in laboratory columns containing creosote-contaminated aquifer material, 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. 851-858.

Konikow, L.F., Campbell, P.J., and Sanford, W.E., 1996,

Modeling brine transport in a porous medium--A reevaluation of the HYDROCOIN level 1, case 5 problem, in Kovan, K., and Van den Heijde, P., eds., Calibration and Reliability in Groundwater Modeling [proceedings]: IAHS Publication No. 237, p. 363-372.

Ostendorf, D.W., 1986,

Modeling contamination of shallow unconfined aquifers through infiltration beds: Water Resources Research, v. 22, no. 3, p. 375-382, 5W4068, doi:10.1029/WR022i003p00375.

Konikow, L.F., and Hornberger, G.Z., 2006,

Modeling effects of multinode wells on solute transport: Ground Water, v. 44, no. 5, p. 648-660, doi:10.1111/j.1745-6584.2006.00231.x.

Killingstad, M.W., Widdowson, M.A., and Smith, R.L., 2002,

Modeling enhanced in situ denitrification in groundwater: Journal of Environmental Engineering, v. 128, no. 6, p. 491-504, doi:10.1061/(ASCE)0733-9372(2002)128:6(491).

Besser, J.M., and Leib, K.J., 1999,

Modeling frequency of occurrence of toxic concentrations of zinc and copper in the Upper Animas River, 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 1 of 3--Contamination from Hardrock Mining: U.S. Geological Survey Water-Resources Investigations Report 99-4018A, p. 75-81.

Konikow, L.F., and Glynn, P.D., 2005,

Modeling ground-water flow and quality, in Selinus, O., ed., Essentials of Medical Geology: Amsterdam, Elsevier, p. 737-765, ISBN:978-0-12-636341-8.

Friedly, J.C., Davis, J.A., and Kent, D.B., 1995,

Modeling hexavalent chromium reduction in groundwater in field-scale transport and laboratory batch experiments: Water Resources Research, v. 31, no. 11, p. 2783-2794, 95WR02104, doi:10.1029/95WR02104.

Runkel, R.L., McKnight, D.M., and Rajaram, H., 2003,

Modeling hyporheic zone processes: Advances in Water Resources, v. 26, no. 9, p. 901-905, doi:10.1016/S0309-1708(03)00079-4.

Chapra, S.C., and Runkel, R.L., 1999,

Modeling impact of storage zones on stream dissolved oxygen: Journal of Environmental Engineering, v. 125, no. 5, p. 415-419.

Nordstrom, D.K., 2003,

Modeling low-temperature geochemical processes (chapter 2), in Drever, J.I., ed., Treatise on Geochemistry: Elsevier, v. 5 of 10 volumes, p. 1-38, ISBN:9780080437514.

Landkamer, L.L., Harvey, R.W., Metge, D.W., and Ryan, J.N., 2004,

Modeling microbial enhancement of Zn (II) and Pb (II) transport in columns packed with geologic media, in Wanty, R., and Seal, R., eds., Water Rock Interaction: Exton, Pennsylvania, A.A. Balkema, v. 2, p. 1139-1140.

Glynn, P.D., and Parkhurst, D.L., 1992,

Modeling non-ideal solid-solution aqueous-solution reactions in mass transfer computer codes, in Kharaka, Y.K., and Maest, A.S., eds., Low temperature environments, v. 1 of Water-rock interaction--Proceedings of the 7th International Symposium on Water-Rock Interaction--WRI-7, Park City, Utah, July 9-23, 1992: Rotterdam, Balkema, p. 175-179.

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.

Schlekat, C.E., Purkerson, D.G., and Luoma, S.N., 2004,

Modeling selenium bioaccumulation through arthropod food webs in San Francisco Bay, California, USA: Environmental Toxicology and Chemistry, v. 23, no. 12, p. 3003-3010, doi:10.1897/03-4.1.

Glynn, P.D., 1990,

Modeling solid-solution reactions in low-temperature aqueous systems, in Melchior, D.C., and Bassett, R.L., eds., Chemical modeling of aqueous systems II: Washington, D.C., American Chemical Society ACS Symposium Series 416, p. 74-86.

Grove, D.B., 1987,

Modeling sorptive processes in laboratory columns, in Ragone, S.E., and Sulam, D., eds., Program overview and selected papers from the Toxic-Waste Program technical meeting--Tucson, Arizona, March 20-22, 1984: U.S. Geological Survey Open-File Report 86-324, p. 79-81.

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.

Bekins, B.A., Godsy, E.M., and Goerlitz, D.F., 1996,

Modeling steady-state methanogenic degradation of phenols in ground water at Pensacola, Florida, 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. 843-849.

Bekins, B.A., Godsy, E.M., and Goerlitz, D.F., 1994,

Modeling steady-state methanogenic degradation of phenols in groundwater at Pensacola, Florida, in Symposium on bioremediation of hazardous wastes--Research, development, and field evaluations: Washington, D.C., Office of Research and Development, U.S. Environmental Protection Agency Environmental Research Brief EPA/600/R-94/075, p. 158-163.

Bekins, B.A., E.M., G., and Goerlitz, D.F., 1993,

Modeling steady-state methanogenic degradation of phenols in groundwater: Journal of Contaminant Hydrology, v. 14, no. 3-4, p. 279-294, doi:10.1016/0169-7722(93)90029-R

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.

Nimmo, J.R., 1997,

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

Packman, A.I., and Bencala, K.E., 2000,

Modeling surface - subsurface hydrologic interactions, in Jones, J.B., and Mulholland, P.J., eds., Streams and Ground Waters: Academic Press, p. 45-80.

Stollenwerk, K.G., 1995,

Modeling the effects of variable groundwater chemistry on adsorption of molybdate: Water Resources Research, v. 31, no. 2, p. 347-357, 94WR02675, doi:10.1029/94WR02675.

Stollenwerk, K.G., and Parkhurst, D.L., 1999,

Modeling the evolution and natural remediation of a ground-water sewage plume, 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. 371-381.

Kent, D.B., Abrams, R.H., Davis, J.A., and Coston, J.A., 1999,

Modeling the influence of adsorption on the fate and transport of metals in shallow ground water--Zinc contamination in the sewage plume on Cape Cod, Massachusetts, 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. 361-369.

Kent, D.B., Abrams, R.H., Davis, J.A., Coston, J.A., and LeBlanc, D.R., 2000,

Modeling the influence of variable pH on the transport of zinc in a contaminated aquifer using semiempirical surface complexation models: Water Resources Research, v. 36, no. 12, p. 3411-3425, 2000WR900244, doi:10.1029/2000WR900244.

Winter, T.C., 1984,

Modeling the interrelationship of ground water and surface water, in Schnoor, J.L., ed., Modeling of total acid precipitation impacts: Boston, Mass., Butterworth Publishers, p. 89-119.

Uncles, R.J., and Peterson, D.H., 1996,

Modeling the long-term salinity field in San Francisco Bay: Continental Shelf Research, v. 16, p. 2005-2039.

Kent, D.B., Wilkie, J.A., and Davis, J.A., 2007,

Modeling the movement of a pH perturbation and its impact on adsorbed zinc and phosphate in a wastewater-contaminated aquifer: Water Resources Research, v. 43, no. 7, W07440, doi:10.1029/2005WR004841.

Grove, D.B., and Stollenwerk, K.G., 1985,

Modeling the rate-controlled sorption of hexavalent chromium: Water Resources Research, v. 21, no. 11, p. 1703-1709, 5W4095, doi:10.1029/WR021i011p01703.

Wang, P.F., Cheng, R.T., Richter, K., Gross, E.S., and Gartner, J.W., 1998,

Modeling tidal hydrodynamics of San Diego Bay, California: Journal of the American Water Resources Association, v. 34, no. 5, p. 1123-1140, doi:10.1111/j.1752-1688.1998.tb04159.x.

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.

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.

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.

Bencala, K.E., Duff, J.H., Harvey, J.W., Jackman, A.P., and Triska, F.J., 1993,

Modelling within the stream-catchment continuum, in Jakeman, A.J., Beck, M.B., and McAleer, J.J., eds., Modelling Change in Environmental Systems: Wiley, p. 163-187.

Solomon, D.K., Cook, P.G., and Plummer, L.N., 2006,

Models of groundwater ages and residence times (chapter 6), in IAEA, ed., Use of chlorofluorocarbons in hydrology--A guidebook: Vienna, International Atomic Energy Agency, p. 73-88.

Goode, D.J., 1999,

Modifications to the solute-transport model MOC3D for simple reactions, double porosity, and age, with application at Mirror Lake, New Hampshire, and other sites, 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. 821-832.

Worrall, F., 2001,

A molecular topology approach to predicting pesticide pollution of groundwater: Environmental Science and Technology, v. 35, no. 11, p. 2282-2287, doi:10.1021/es001593g.

Stollenwerk, K.G., 1998,

Molybdate transport in a chemically complex aquifer--Field measurements compared with solute-transport model predictions: Water Resources Research, v. 34, no. 10, p. 2727- 2740, 98WR02163, doi:10.1029/98WR02163.

Essaid, H.I., and Hess, K.M., 1993,

Monte Carlo simulations of multiphase flow incorporating spatial variability of hydraulic properties: Ground Water, v. 31, no. 1, p. 123-134.

Brown, J.G., 1996,

Movement of metal contaminants in ground water in the Pinal Creek basin, Arizona---Model assessment and simulation of reactive transport: Tucson, University of Arizona, M.S. thesis, 236 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.

Dillard, L.A., Essaid, H.I., and Herkelrath, W.N., 1997,

Multiphase flow modeling of a crude-oil spill site with a bimodal permeability distribution: Water Resources Research, v. 33, no. 7, p. 1617-1632, 97WR00857, doi:10.1029/97WR00857.

Dillard, L.A., Essaid, H.I., and Herkelrath, W.N., 1996,

Multiphase-flow modeling of the Bemidji, Minnesota crude-oil-spill site with geostatistical simulation of hydraulic properties, 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. 679-688.

Hess, K.M., Davis, J.A., Coston, J.A., and Kent, D.B., 1999,

Multispecies reactive transport in an aquifer with spatially variable chemical conditions--Dispersion of bromide and nickel tracers, 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. 393-404.

Tauler, R., Bercelo, D., and Thurman, E.M., 2000,

Multivariate correlation between concentrations of selected herbicides and derivatives in outflows from selected U.S. midwestern reservoirs: Environmental Science and Technology, v. 34, no. 16, p. 3307-3314, doi:10.1021/es000884m.

Mendez, E., Widdowson, M., Brauner, S., Chapelle, F., and Casey, C., 2004,

Natural attenuation software (NAS)--A computer program for estimating remediation times of contaminated groundwater, in Latini, G., Passerini, G., and Brebbia, C., eds., Development and Application of Computer Techniques to Environmental Studies X: WIT Press, p. 185-194, ISBN:1-85312-718-3.

Stollenwerk, K.G., and Colman, J.A., 2003,

Natural remediation potential of arsenic-contaminated ground water, in Welch, A.H., and Stollenwerk, K.G., eds., Arsenic in Groundwater--Geochemistry and Occurrence: Boston, Kluwer Academic Press, p. 351-379.

Garabedian, S.P., and LeBlanc, D.R., 1987,

A natural-gradient tracer experiment to verify stochastic models of solute transport, Cape Cod, Massachusetts, in Proceedings of International Congress on Hazardous Materials Management, International Congress of Environmental Professionals, Chattanooga, Tennessee, June 8-12, 1987: Northbrook, Ill., Pudvan Publishing, p. 187-197.

Wright, D.L., Smith, D.V., Abraham, J.D., Smith, R.T., Cui, T.J., and Chew, W.C., 1999,

New field and modeling results from a simulated waste pit using the enhanced very early time electromagnetic (VETEM) prototype system, in Powers, M.H., Cramer, L., and Bell, R.S., eds., Proceedings of the Symposium on the Application of Geophysics to Engineering and Environmental Problems (SAGEEP '99), Oakland, California, March 14-18, 1999: p. 811-820.

Goolsby, D.A., and Battaglin, W.A., 2000,

Nitrogen in the Mississippi Basin--Estimating sources and predicting flux to the Gulf of Mexico: U.S. Geological Survey Fact Sheet 135-00, 6 p.

Brusseau, M.L., and Srivastava, R., 1999,

Nonideal transport of reactive solutes in heterogeneous porous media--4, Analysis of the Cape Cod natural-gradient field experiment: Water Resources Research, v. 35, no. 4, p. 1113-1125, 1998WR900019, doi:10.1029/1998WR900019.

Kochiss, C.S., 2004,

Numerical and physical modeling of the effects of temperature change on ground-penetrating radar: Storrs, University of Connecticut, unpublished Master's thesis, 82 p.

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.

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.

Lucas, L.V., 1997,

A numerical investigation of coupled hydrodynamics and phytoplankton dynamics in shallow estuaries: Stanford, Calif., Standord University, Department of Civil and Environmental Engineering, PhD. Thesis, 314 p.

Sheibley, R.W., Jackman, A.P., Duff, J.H., and Triska, F.J., 2003,

Numerical modeling of coupled nitrification-denitrification in sediment perfusion cores from the hyporheic zone of the Shingobee River, Minnesota: Advances in Water Resources, v. 26, no. 9, p. 977-987, doi:10.1016/S0309-1708(03)00088-5.

Winter, T.C., and Pfannkuch, H.O., 1984,

Numerical simulation analysis, pt. 2 of Effect of anisotropy and groundwater system geometry on seepage through lakebeds: Journal of Hydrology, v. 75, p. 239-253.

Zhu, L., Liu, L., Lane, J.W., Jr., and Day-Lewis, F.D., 2006,

Numerical simulation of EM wave propagation using split-step alternating direction implicit FDTD method, in Proceedings of the Eleventh International Conference on Ground Penetrating Radar (CD-ROM), Columbus, Ohio, June 19-22, 2006.

Lewis, F., Voss, C.I., and Rubin, J., 1986,

Numerical simulation of advective-dispersive multisolute transport with sorption, ion exchange and equilibrium chemistry: U.S. Geological Survey Water-Resources Investigations Report 86-4022, 165 p.

LeBlanc, D.R., and Celia, M.A., 1996,

Numerical simulation of downward movement of solutes during a natural-gradient tracer test in sand and gravel, Cape Cod, Massachusetts, 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. 283-287.

Tiedeman, C.R., Goode, D.J., and Hsieh, P.A., 1997,

Numerical simulation of ground-water flow through glacial deposits and crystalline bedrock in the Mirror Lake area, Grafton County, New Hampshire: U.S. Geological Survey Professional Paper 1572, 50 p.

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.

Squillace, P.J., 1996,

Observed and simulated movement of bank-storage water: Ground Water, v. 34, no. 1, p. 121-134.

Nordstrom, D.K., 1994,

On the evaluation and application of geochemical models, appendix II, in Proceedings of the 5th CEC Natural Analogue Working Group and Alligator Rivers Analogue Project, Toledo, Spain, October 5-19, 1994: p. 375-385.

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, W.W., 1985,

Origin of caves and other solution openings in the unsaturated (vadose) zone of carbonate rocks--A model for C02 generation: Geology, v. 13, p. 822-824.

Yager, R.M., Kappel, W.M., and Plummer, L.N., 2007,

Origin of halite brine in the Onondaga Trough near Syracuse, New York State, USA--Modeling geochemistry and variable-density flow: Hydrogeology Journal, doi:10.1007/s10040-007-0186-9 (Advanced Web release).

Cloern, J.E., 2001,

Our evolving conceptual model of the coastal eutrophication problem: Marine Ecology Progress Series, v. 210, p. 223-253, doi:10.3354/meps210223.

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.

Harvey, R.W., 1991,

Parameters involved in modeling movement of bacteria in groundwater, in Hurst, C.J., ed., Modeling the environmental fate of microorganisms: Washington, D.C., American Society for Microbiology, p. 89-114.

Luoma, S.N., 1995,

Pathway models could aid management of contaminants: Interagency Ecological Program for the Sacramento-San Joaquin Estuary Newsletter, California Department of Water Resources, p. 6-8.

Bencala, K.E., 1985,

Performance of sodium as a transport tracer experimental and simulation analysis, in Subitzky, S., ed., Selected Papers in the Hydrologic Sciences, 1985: U.S. Geological Survey Water-Supply Paper 2270, p. 83-89.

Gelhar, L.W., 1996,

Perspectives on field scale application of stochastic subsurface hydrology, in Subsurface Flow and Transport: The Stochastic Approach, Second IHP/IAHS George Kovacs Colloquium, Proceedings, Paris, France, January 26-28, 1995: Cambridge University Press/UNESCO.

Presser, T.S., Piper, D.Z., Bird, K.J., Skorupa, J.P., Hamilton, S.J., Detwiler, S.J., and Huebner, M.A., 2004,

The Phosphoria Formation--A model for forecasting global selenium sources to the environment, in Hein, J., ed., Life Cycle of the Phosphoria Formation--From Deposition to the Post-Mining Environment: Amsterdam, Elsevier, p. 299-319.

Bencala, K.E., Duff, J.H., Harvey, J.W., Jackman, J.P., and Triska, F.J., 1993,

Physical transport influencing biogeochemistry within the stream catchment continuum, in Jakeman, A.J., Beck, M.B., and McAleer, M.J., eds., Modelling change in environmental systems: New York, J. Wiley and Sons.

Harvey, R.W., Metge, D.W., Kinner, N., and Mayberry, N., 1997,

Physiological considerations in applying laboratory-determined buoyant densities to predictions of bacterial and protozoan transport in groundwater--Results of in-situ and laboratory tests: Environmental Science and Technology, v. 31, no. 1, p. 289-295, doi:10.1021/es960461d.

Woodward, D.F., Farag, A.M., DeLonay, A.J., Cleveland, L.J., Brumbaugh, W.G., and Little, E.E., 1999,

The potential for contaminated ground water to adversely affect chinook salmon under exposure conditions simulating the Hanford Reach of the Columbia River, Washington, USA, 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 2 of 3--Contamination of Hydrologic Systems and Related Ecosystems: U.S. Geological Survey Water-Resources Investigations Report 99-4018B, p. 455-463.

Koczot, K.M., Jeton, A.E., McGurk, B., and Dettinger, M.D., 2005,

Precipitation-runoff processes in the Feather River Basin, northeastern California, with prospects for streamflow predictability, water years 1971-97: U.S. Geological Survey Scientific Investigations Report 2004-5202, 82 p.

Harvey, J.W., Conklin, M.H., and Koelsch, R.S., 2003,

Predicting changes in hydrologic retention in an evolving semi-arid alluvial stream: Advances in Water Resources, v. 26, no. 9, p. 939-950, doi:10.1016/S0309-1708(03)00085-X.

Druliner, A.D., and McGrath, T.S., 1996,

Predicting nitrate-nitrogen and atrazine contamination in the High Plains aquifer in Nebraska, 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. 515-524.

Rehfeldt, K.R., 1988,

Prediction of macrodispersivity in heterogeneous aquifers: Cambridge, Massachusetts Institute of Technology, Department of Civil Engineering, unpublished Ph.D. thesis, 233 p.

Luoma, S.N., 1995,

Prediction of metal toxicity in nature for bioassays--Limitations and research needs, in Tessier, A., and Turner, D., eds., Metal speciation and bioavailability in aquatic systems: New York, John Wiley and Sons, p. 609-659.

Smith, K.S., Ranville, J.F., Plumlee, G.S., and Macalady, D.L., 1998,

Predictive double-layer modeling of metal sorption in mine-drainage systems, in Jenne, E.A., ed., Adsorption of metals by geomedia--variables, mechanisms, and model applications: San Diego, Calif., Academic Press, p. 521-547.

Smith, K.S., Ranville, J.F., and Macalady, D.L., 1991,

Predictive modeling of copper, cadmium, and zinc partitioning between streamwater and bed sediment from a stream receiving acid mine drainage, St. Kevin Gulch, Colorado, in Mallard, G.E., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Monterey, California, March 11-15, 1991: U.S. Geological Survey Water-Resources Investigations Report 91-4034, p. 380-386.

du Bray, E.A., ed., 1995,

Preliminary compilation of descriptive geoenvironmental mineral deposit models: U.S. Geological Survey Open-File Report 95-0831, Online Version 1.0.

Hill, M.C., Ely, D.M., Tiedeman, C.R., O'Brien, G.M., D'Agnese, F.A., and Faunt, C.C., 2001,

Preliminary evaluation of the importance of existing hydraulic-head observation locations to advective transport predictions, Death Valley regional flow system, California and Nevada: U.S. Geological Survey Water-Resources Investigations Report 00-4282.

Angeroth, C.E., Leake, S.A., and Wagner, B.J., 1999,

Preliminary model development of the ground- and surface-water system in Pinal Creek Basin, Arizona, 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 1 of 3--Contamination from Hardrock Mining: U.S. Geological Survey Water-Resources Investigations Report 99-4018A, p. 211-216.

Kipp, K.L., 1987,

Preliminary one-dimensional simulation of ammonium and nitrate in the Cape Cod sewage plume, in Franks, B.J., ed., U.S. Geological Survey Program on Toxic Waste--Ground-Water Contamination--Proceedings of the third technical meeting, Pensacola, Florida, March 23-27, 1987: U.S. Geological Survey Open-File Report 87-109, p. B-43-B-46.

Martin, M., 1989,

Preliminary results of a study to simulate trichloroethylene movement in ground water at Picatinny Arsenal, New Jersey, in Mallard, G.E., and Ragone, S.E., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Phoenix, Arizona, September 26-30, 1988: U.S. Geological Survey Water-Resources Investigations Report 88-4220, p. 377-383.

Franks, B.J., 1988,

Preliminary three-dimensional simulation of ground-water flow, in Ragone, S.E., ed., U.S. Geological Survey Program on Toxic Waste--Ground-Water Contamination--Proceedings of the second technical meeting, Cape Cod, Massachusetts, October 21-25, 1985: U.S. Geological Survey Open-File Report 86-481, p. A-3-A-5.

Paschke, S.S., Kimball, B.A., and Runkel, R.L., 2005,

Quantification and simulation of metal loading to the Upper Animas River, Eureka to Silverton, San Juan County, Colorado, September 1997 and August 1998: U.S. Geological Survey Scientific Investigations Report 2005-5054, 73 p.

Kimball, B.A., Walton-Day, K., and Runkel, R.L., 2007,

Quantification of metal loading by tracer injection and synoptic sampling, 1996-2000 (Chapter E9), in Church, S.E., von Guerard, P., and Finger, S.E., eds., Integrated Investigations of Environmental Effects of Historical Mining in the Animas River Watershed, San Juan County, Colorado: U.S. Geological Survey Professional Paper 1651, v. 1, p. 417-495.

Chang, F.H., Hult, M., and Noben, N.N., 1987,

Quantitative studies of biodegradation of petroleum and some model hydrocarbons in ground water and sediment environments, in Fairchild, D.M., ed., National Conference on Ground-Water Quality and Agricultural Practices--Proceedings of Ground-Water Quality and Agricultural Practices, Norman Okla., May 1-2, 1986: Chelsea, Mich., Lewis Publishers, p. 295-318.

Ball, J.W., Runkel, R.L., and Nordstrom, D.K., 2005,

Questa baseline and pre-mining ground-water quality investigation. 12. Geochemical and reactive-transport modeling based on tracer injection-synoptic sampling studies for the Red river, New Mexico, 2001-2002: U.S. Geological Survey Scientific Investigations Report 2005-5149, 78 p.

Verplanck, P.L., Nordstrom, D.K., and McCleskey, R.B., 2005,

Questa baseline and pre-mining ground-water quality investigation. 20. Water chemistry trends of the Red River, Taos County, New Mexico, with data from selected seeps, tributaries, and snow, 2000-2004: U.S. Geological Survey Scientific Investigations Report 2006-5028.

Kimball, B.A., Nordstrom, D.K., Runkel, R.L., and Verplanck, P.L., 2006,

Questa baseline and pre-mining ground-water quality investigation. 23. Quantification of solute mass loading for Red River, New Mexico: U.S. Geological Survey Scientific Investigations Report 2006-5004.

Gooseff, M.N., McKnight, D.M., and Runkel, R.L., 2004,

Reach-scale cation exchange controls on major ion chemistry of an Antarctic glacial meltwater stream: Aquatic Geochemistry, v. 10, no. 3-4, p. 221-238, doi:10.1007/s10498-004-2260-4.

Ball, J.W., Nordstrom, D.K., and Runkel, R.L., 2000,

Reactive and non-reactive transport modeling for Wightman Fork, Summitville Mine, Colorado--Application of the OTIS/OTEQ model to a low-flow synoptic study, 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, v. 1 of 2, p. 125-134.

Broshears, R.E., Runkel, R.L., Kimball, B.A., Bencala, K.E., and McKnight, D.M., 1996,

Reactive solute transport in an acidic stream--Experimental pH increase and simulation of controls on pH, aluminum, and iron: Environmental Science and Technology, v. 30, no. 10, p. 3016-24, doi:10.1021/es960055u.

Christensen, F.D., Engesgaard, P., and Kipp, K.L., 2001,

A reactive transport investigation of seawater intrusion experiment in a shallow aquifer, Skansehage, Denmark, in Proceedings of the First International Conference on Saltwater Intrusion and Coastal Aquifers, Essaouira, Morocco, April 23-35, 2001.

Ball, J.W., Runkel, R.L., and Nordstrom, D.K., 2001,

Reactive transport modeling at high-flow - Wightman Fork/Alamosa River, USA, in Cidu, R., ed., Proceedings of the Tenth International Symposium on Water - Rock Interaction, Villasimius, Italy, July 10-15, 2001: A.A. Balkema Publishers, v. 2, p. 1181-1184.

Glynn, P.D., and Brown, J.G., 1996,

Reactive transport modeling of acidic metal-contaminated ground water at a site with sparse spatial information, in Lichtner, P.C., Steefel, C.I., and Oelkers, E.H., eds., Reactive Transport in Porous Media: Washington, D.C., Mineralogical Society of America, Reviews in Mineralogy, v. 34, p. 377--438.

Parkhurst, D.L., Stollenwerk, K.G., and Colman, J.A., 2003,

Reactive-transport simulation of phosphorus in the sewage plume at the Massachusetts Military Reservation, Cape Cod, Massachusetts: U.S. Geological Survey Water-Resources Investigations Report 03-4017, 33 p.

Person, M.A., and Konikow, L.F., 1986,

The recalibration and predictive reliability of a solute-transport model of an irrigated stream-aquifer system: Journal of Hydrology, v. 87, p. 145-165.

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.

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.

Battaglin, W.A., and Goolsby, D.A., 1998,

Regression models of herbicide concentrations in outflow from reservoirs in the midwestern USA, 1992-1993: Journal of the American Water Resources Association, v. 34, no. 6, p. 1369-1390, doi:10.1111/j.1752-1688.1998.tb05438.x.

McIsaac, G.F., David, M.B., Gertner, G.Z., and Goolsby, D.A., 2002,

Relating net nitrogen input in the Mississippi River Basin to nitrate flux in the Lower Mississippi River--A comparison of approaches: Journal of Environmental Quality, v. 31, p. 1610-1622.

Konikow, L.F., and Sanford, W.E., 1998,

Reply to comment by E. Holzbecher on "Constant-concentration boundary condition--Lessons from the HYDROCOIN variable-density groundwater benchmark problem: Water Resources Research, v. 34, no. 10, p. 2775-2778.

Bredehoeft, J.D., and Konikow, L.F., 1993,

Reply to comment by G. de Marsily, P. Combes, and P. Goblet on "Ground-water models cannot be validated": Advances in Water Resources, v. 15, no. 6, p. 371-372.

Luoma, S.N., and Davis, J.A., 1983,

Requirements for modeling trace metal partitioning in oxidized estuarine sediments: Marine Chemistry, v. 12, p. 159-181.

Harvey, R.W., and Garabedian, S.P., 1992,

Response to comment on Use of colloid filtration theory in modeling movement of bacteria through a contaminated sandy aquifer: Environmental Science and Technology, v. 26, no. 2, p. 401-402, doi:10.1021/es00026a026.

Peterson, D.H., Cayan, D.R., Smith, R.E., Dettinger, M.D., and Riddle, L.G., 2002,

Retrospective appraisal of the 2000 maximum flow forecasts: California Applications Program, Scripps Institute of Oceanography.

U.S. Environmental Protection Agency Modeling Project Subcommittee (Science Advisory Board), 1993,

Review of the assessment framework for ground-water model applications: Environmental Protection Agency, 12 p.

Maxwell, R.M., Welty, C., and Harvey, R.W., 2007,

Revisiting the Cape Cod bacteria injection experiment using a stochastic modeling approach: Environmental Science and Technology, v. 41, no. 15, p. 5548-5558, doi:10.1021/es062693a.

Nordstrom, D.K., 2005,

A river on the edge--Water quality in the Red River and the USGS background study, in Price, L.G., Bland, D., McLemore, V.T., and Barker, J.M., eds., Mining in New Mexico, Decision-Makers Conference 2005, Taos region, Socorro, New Mexico: New Mexico Bureau of Geology and Mineral Resources, p. 64-67.

Konikow, L.F., 1981,

Role of numerical simulation in analysis of groundwater quality problems: The Science of the Total Environment, v. 21, p. 299-312, doi:10.1016/0048-9697(81)90163-7.

Konikow, L.F., 1981,

Role of solute transport models in the analysis of groundwater salinity problems in agricultural areas: Agricultural Water Management, v. 4, p. 187-205.

Peterson, D.H., Cayan, D.R., Dettinger, M.D., Noble, M., Riddle, L.G., Schemel, L.E., Smith, R.E., Uncles, R.J., and Walters, R., 1996,

San Francisco Bay salinity--Observations, numerical simulation, and statistical models, in Hollibaugh, J.T., ed., San Francisco Bay--The ecosystem: San Francisco, American Association for the Advancement of Science, Pacific Division, p. 9-34.

Smith, P.E., 1994,

San Francisco Bay test case for 3-D model verification, in 1994 National Conference on Hydraulic Engineering, Proceedings, Buffalo, N.Y., August 1-5, 1994: American Society of Civil Engineers, v. 2, p. 885-889.

Gooseff, M.N., Bencala, K.E., Scott, D.T., Runkel, R.L., and McKnight, D.M., 2005,

Sensitivity analysis of conservative and reactive stream transient storage models applied to field data from multiple-reach experiments: Advances in Water Resources, v. 28, no. 5, p. 479-492, doi:10.1016/j.advwatres.2004.11.012.

Brauner, J.S., and Widdowson, M.A., 1997,

Sequential electron acceptor model for evaluation of in situ bioremediation of petroleum hydrocarbon contaminants in groundwater, in Engineering Foundation Conference on Bioremediation, Palm Coast, Florida, January 21-26, 1996: Annals of the New York Academy of Sciences, v. 829, p. 399-419.

Masterson, J.P., Hess, K.M., Walter, D.A., and LeBlanc, D.R., 2002,

Simulated changes in the sources of ground water for public-supply wells, ponds, streams, and coastal areas on western Cape Cod, Massachusetts: U.S. Geological Survey Water-Resources Investigations Report 02-4143, 12 p.

Goff, K., Lewis, M.E., Person, M.A., and Konikow, L.F., 1998,

Simulated effects of irrigation on salinity in the Arkansas River Valley in Colorado: Ground Water, v. 36, no. 1, p. 76-86.

Knowles, N., Cayan, D.R., Peterson, D.H., and Uncles, R.J., 1998,

Simulated efforts of delta out flow on the bay--1998 compared to other years: Interagency Ecological Program for the Sacramento-San Joaquin Estuary Newsletter, v. 11, no. 4, p. 29-32.

Lewis-Brown, J.C., and Rice, D.E., 2002,

Simulated ground-water flow, Naval Air Warfare Center, West Trenton, New Jersey: U.S. Geological Survey Water-Resources Investigations Report 02-4019, 49 p.

Dettinger, M.D., Cayan, D.R., Meyer, M.K., and Jeton, A.E., 2004,

Simulated hydrologic responses to climate variations and change in the Merced, Carson, and American River basins, Sierra Nevada, California, 1900-2099: Climate Change, v. 62, p. 283-317, 5147542, doi:10.1023/B:CLIM.0000013683.13346.4f.

Walter, D.A., Masterson, J.P., and LeBlanc, D.R., 2002,

Simulated pond-aquifer interactions under natural and stressed conditions near Snake Pond, Cape Cod, Massachusetts: U.S. Geological Survey Water-Resources Investigations Report 99-4174, 35 p.

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.

Goode, D.J., 1999,

Simulating contaminant attenuation, double-porosity exchange, and water age in aquifers using MOC3D: U.S. Geological Survey Fact Sheet 086-99, 4 p.

Hornberger, G.Z., Konikow, L.F., and Harte, P.T., 2002,

Simulating solute transport across horizontal-flow barriers using the MODFLOW ground-water transport process: U.S. Geological Survey Open-File Report 02-52, 28 p.

Konikow, L.F., Harte, P.T., and Hornberger, G.Z., 2001,

Simulating solute transport across horizontal-flow barriers, in Seo, Poeter, and Zheng, eds., Proceedings MODFLOW 2001 and other modeling odysseys conference, Ground Water Modeling Center, Colorado School of Mines, Golden, Colorado, September 2001: p. 510-516.

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.

Curtis, G.P., and Davis, J.A., 2004,

Simulation of U(VI) transport in groundwater with variable geochemical conditions, in Wanty, R.B., and Seal II, R.R., eds., Proceedings of the Eleventh International Symposium on Water-Rock Interaction, Saratoga Springs, New York, July 2004: Balkema, v. 2, p. 927-933.

Walter, D.A., and Masterson, J.P., 2003,

Simulation of advective flow under steady-state and transient recharge conditions, Camp Edwards, Massachusetts Military Reservation, Cape Cod, Massachusetts: U.S. Geological Survey Water-Resources Investigations Report 03-4053, 51 p.

Essaid, H.I., Bekins, B.A., Godsy, E.M., Warren, E., Baedecker, M.J., and Cozzarelli, I.M., 1995,

Simulation of aerobic and anaerobic biodegradation processes at a crude oil spill site: Water Resources Research, v. 31, no. 12, p. 3309-3327, 95WR02567, doi:10.1029/95WR02567.

Sanford, W.E., and Konikow, L.F., 1989,

Simulation of calcite dissolution and porosity changes in saltwater mixing zones in coastal aquifers: Water Resources Research, v. 25, no. 4, p. 655-667.

Stollenwerk, K.G., 1991,

Simulation of copper, cobalt, and nickel sorption in an alluvial aquifer near Globe, Arizona, in Mallard, G.E., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Monterey, California, March 11-15, 1991: U.S. Geological Survey Water-Resources Investigations Report 91-4034, p. 502-506.

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.

Pollock, D.W., 1986,

Simulation of fluid flow and energy transport processes associated with high-level radioactive waste disposal in unsaturated alluvium: Water Resources Research, v. 22, no. 5, p. 765-775, 5W4163, doi:10.1029/WR022i005p00765.

Neaville, C.C., 1989,

Simulation of ground- and surface-water flow in the Globe area, Arizona, in Mallard, G.E., and Ragone, S.E., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Phoenix, Arizona, September 26-30, 1988: U.S. Geological Survey Water-Resources Investigations Report 88-4220, p. 577-579.

Voronin, L.M., 1991,

Simulation of ground-water flow at Picatinny Arsenal, New Jersey, in Mallard, G.E., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Monterey, California, March 11-15, 1991: U.S. Geological Survey Water-Resources Investigations Report 91-4034, p. 713-720.

Coontz, R.J., 1990,

Simulation of groundwater flow at the Bemidji, Minnesota crude-oil spill site, and implications for advective transport of dissolved contaminants: Stanford, Calif., Stanford University, M.S. thesis, 80 p.

Diodato, D.M., 1999,

Simulation of mass transport using the FracTran98 Module of FracSys2000, 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. 833-840.

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.

Stollenwerk, K.G., 1991,

Simulation of molybdate sorption with the diffuse layer surface-complexation model, in Mallard, G.E., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Monterey, California, March 11-15, 1991: U.S. Geological Survey Water-Resources Investigations Report 91-4034, p. 47-52.

Stollenwerk, K.G., and Kipp, K.L., 1990,

Simulation of molybdate transport with different rate-controlled mechanisms, in Melchior, D.C., and Bassett, R.L., eds., Chemical modeling of aqueous systems II: Washington, D.C., American Chemical Society ACS Symposium Series 416, p. 243-257.

Stollenwerk, K.G., 1996,

Simulation of phosphate transport in sewage-contaminated groundwater, Cape Cod, Massachusetts: Applied Geochemistry, v. 11, no. 1-2, p. 317-324, doi:10.1016/0883-2927(95)00041-0.

Stollenwerk, K.G., 1996,

Simulation of reactions affecting transport of constituents in the acidic plume, Pinal Creek Basin, Arizona, in Brown, J.G., and Favor, B., eds., Hydrology and geochemistry of aquifer and stream contamination related to acidic water in Pinal Creek Basin near Globe, Arizona: U.S. Geological Survey Water-Supply Paper 2466, p. 21-50.

Martin, M., 1991,

Simulation of reactive multispecies transport in two-dimensional ground-water-flow systems, in Mallard, G.E., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Monterey, California, March 11-15, 1991: U.S. Geological Survey Water-Resources Investigations Report 91-4034, p. 698-703.

Broshears, R.E., Kimball, B.A., and Runkel, R.L., 1996,

Simulation of reactive transport during a pH modification experiment in a mountain stream affected by acid mine drainage, 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. 781-788.

Curtis, G.P., Davis, J.A., and Naftz, D.L., 2006,

Simulation of reactive transport of uranium(VI) in groundwater with variable chemical conditions: Water Resources Research, v. 42, W04404, doi:10.1029/2005WR003979.

Harte, P.T., Konikow, L.F., and Hornberger, G.Z., 2006,

Simulation of solute transport across low-permeability barrier walls: Journal of Contaminant Hydrology, v. 85, no. 3-4, p. 247-270, doi:10.1016/j.jconhyd.2006.02.012.

Shapiro, A.M., and Anderson, J., 1985,

Simulation of steady-state flow in three-dimensional fracture networks using the boundary-element method: Advances in Water Resources, v. 8, p. 106-110.

Friedly, J.C., Kent, D.B., and Davis, J.A., 2002,

Simulation of the mobility of metal-EDTA complexes in groundwater--The influence of contaminant metals: Environmental Science and Technology, v. 36, no. 3, p. 355-363, doi:10.1021/es010926m.

Stollenwerk, K.G., and Kipp, K.L., 1989,

Simulation of the rate-controlled transport of molybdate in column experiments, in Mallard, G.E., and Ragone, S.E., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Phoenix, Arizona, September 26-30, 1988: U.S. Geological Survey Water-Resources Investigations Report 88-4220, p. 151-161.

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.

Martin, M., 1996,

Simulation of transport, desorption, volatilization, and microbial degradation of trichloroethylene in ground water 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. 307-313.

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.

Zhang, H., Schwartz, F.W., Wood, W.W., Garabedian, S.P., and LeBlanc, D.R., 1998,

Simulation of variable-density flow and transport of reactive and nonreactive solutes during a tracer test at Cape Cod, Massachusetts: Water Resources Research, v. 34, no. 1, p. 67-82, 97WR02918, doi:10.1029/97WR02918.

Runkel, R.L., Kimball, B.A., Walton-Day, K., and Verplanck, P.L., 2007,

A simulation-based approach for estimating premining water quality--Red Mountain Creek, Colorado: Applied Geochemistry, v. 22, no. 9, p. 1899-1918, doi:10.1016/j.apgeochem.2007.03.054.

Welch, A.H., Stollenwerk, K.G., Maurer, D.K., and Feinson, L.S., 2003,

In situ arsenic remediation in a fractured, alkaline aquifer, in Welch, A.H., and Stollenwerk, K.G., eds., Arsenic in ground water--Geochemistry and occurrence: Boston, Kluwer Academic Publishers, p. 403-419.

Lewis, F., Voss, C.I., and Rubin, J., 1987,

Solute transport with equilibrium aqueous complexation and either sorption or ion exchange--Simulation methodology and applications: Journal of Hydrology, v. 90, p. 81-115.

Rubin, J., 1990,

Solute transport with multisegment, equilibrium-controlled reactions--A feed forward simulation method: Water Resources Research, v. 26, no. 9, p. 2029-2055, doi:10.1029/WR026i009p02029.

Wagner, B.J., and Harvey, J.W., 1996,

Solute-transport parameter estimation for an injection experiment at Pinal Creek, 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. 1081-1087.

Miller, R.L., Grove, N.B., and Stollenwerk, K.G., 1984,

A solution-chemistry model of the interference of cadmium-carbonate precipitation in the determination of cation-exchange separation factors, in Subitzky, S., ed., Selected papers in the hydrologic sciences 1984: U.S. Geological Survey Water-Supply Paper 2262, p. 33-41.

Guarini, J.-M., Cloern, J.E., Edmunds, J., and Gros, P., 2002,

Spatial variability of microphytobenthos photosynthesis in tidal estuaries--A modeling approach with applications to San Francisco Bay: Estuaries, v. 25, p. 409-417.

Reddy, M., and Aiken, G., 1997,

Speciation and fractionation modeling studies - dissolved organic carbon (DOC)-mercury interaction--U.S. Geological Survey Program on the South Florida Ecosystem, Proceedings of the Technical Symposium in Ft. Lauderdale, Florida, August 25-27, 1997: U.S. Geological Survey Open-File Report 97-385, 73 p.

Battaglin, W.A., and Goolsby, D.A., 1997,

Statistical modeling of agricultural chemical occurrence in midwestern rivers: Journal of Hydrology, v. 196, no. 1-4, p. 1-25, doi:10.1016/S0022-1694(97)00011-5.

Grégoire, C., Lane, J.W.J., and Joesten, P.K., 2005,

Steam injection pilot study in a contaminated fractured limestone (Maine, USA)--Modeling and analysis of borehole radar reflection data, in Proceedings of the 3rd International Workshop on Advanced Ground Penetrating Radar, Delft, The Netherlands, May 2-4, 2005.

Miralles-Wilhelm, F., 1993,

Stochastic analysis of sorption and biodegradation in three-dimensionally heterogeneous aquifers: Cambridge, Massachusetts Institute of Technology, Department of Civil and Environmental Engineering, unpublished Ph.D. thesis, 269 p.

Voss, C.I., and Knopman, D.S., 1990,

Strong classical one-dimensional descriptions of field solute transport exist! Modeling the Cape Cod tracer test, in Solving Ground Water Problems with Models, Indianapolis, Indiana, February 7-9, 1989: Dublin, Ohio, National Water Well Association, p. 209-232.

Hicks, D.W., Asmussen, L.E., and Smith, C.N., 1990,

Study design to investigate and simulate agricultur