Models

Computer models for the simulation of contaminant transport and fate and their applications

Boyer, E.W., Hornberger, G.M., Bencala, K.E., and McKnight, D.M., 2000,

Effects of asynchronous snowmelt on flushing of dissolved organic carbon--A mixing model approach: Hydrological Processes, v. 14, no. 18, p. 3291-3308, doi:10.1002/1099-1085(20001230)14:18<3291::AID-HYP202>3.0.CO;2-2.

Hornberger, G.Z., and Konikow, L.F., 1998,

Addition of MOC3D solute-transport model capability to the U.S. Geological Survey MODFLOW-96 graphical-user interface using Argus open numerical environments: U.S. Geological Survey Open-File Report 98-188, 30 p.

Anderman, E.R., and Hill, M.C., 1997,

Advective-transport observation (ADV) package, a computer program for adding advective-transport observations of steady-state flow fields to the three-dimensional ground-water-flow parameter-estimation model MODFLOWP: U.S. Geological Survey Open-File Report 97-14, 67 p.

Hem, J.D., and Roberson, C.E., 1990,

Aluminum hydrolysis reactions and products in mildly acidic 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. 429-446.

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.

Runkel, R.L., McKnight, D.M., and Andrews, E.D., 1998,

Analysis of transient storage subject to unsteady flow--Diel flow variation in an Antarctic stream: Journal of North American Benthological Society, v. 17, no. 2, p. 143-154.

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.

Plummer, L.N., and Parkhurst, D.L., 1990,

Application of the Pitzer Equations to the PHREEQE geochemical model, in Melchoir, D.C., and Bassett, R.L., eds., Chemical modeling of aqueous systems II: Washington, D.C., American Chemical Society ACS Symposium Series 416, p. 128-137.

Baehr, A.L., and Bruell, C.J., 1990,

Application of the Stefan-Maxwell equations to determine limitations of Fick's Law when modeling organic vapor transport in sand columns: Water Resources Research, v. 26, no. 6, p. 1155-1163, doi:10.1029/WR026i006p01155.

Manteuffel, T.A., Grove, D.B., and Konikow, L.F., 1983,

Application of the conjugate-gradient method to ground-water model: U.S. Geological Survey Water-Resources Investigations Report 83-4009, 24 p.

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.

Majure, J.J., and Eash, D.A., 1991,

An automated method to quantify physical basin characteristics, 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. 558-561.

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.

Troutman, B.M., and Karlinger, M.R., 1986,

Averaging properties of channel networks using methods in stochastic branching theory, in Gupta, V.K., Rodriguez-Iturbe, I., and Wood, E.F., eds., Scale problems in hydrology--Runoff generation and basin response, Symposium, Proceedings, Princeton, New Jersey, October 30-November 3, 1984: Dordrecht, Netherlands, D. Reidel Publishing Co., p. 185-216.

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.

Sanford, W.E., Wood, W.W., and Councell, T.B., 1992,

Calcium chloride-dominated brines--An ion-exchange model, 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 13-18, 1992: Rotterdam, A.A. Balkema, p. 669-672.

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., 2004,

Calculation of individual isotope equilibrium constants for geochemical reactions: Geochimica et Cosmochimica Acta, v. 68, no. 11, p. 2449-2465, doi:10.1016/j.gca.2003.11.027.

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.

Ellefsen, K.J., 2000,

check_picks_x -- A program for checking the travel time picks of crosswell seismic and radar data: U.S. Geological Survey Open-File Report 00-109.

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.

Moench, A.F., 1995,

Combining the Neuman and Boulton models for flow to a well in an unconfined aquifer: Ground Water, v. 33, no. 3, p. 378-384.

Hsieh, P.A., and Cooley, R.L., 1995,

Comment on "Horizontal aquifer movement in a theis-theim confined system, by Donald C. Helm: Water Resources Research, v. 31, no. 12, p. 3101-3111.

Nimmo, J., 1991,

Comment on the treatment of residual water content in "A consistent set of parametric models for the two-phase flow of immiscible fluids in the subsurface" by L. Luckner et al: Water Resources Research, v. 27, no. 4, p. 661-662, 91WR00165, doi:doi:10.1029/91WR00165.

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.).

Stannard, D.I., 1993,

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

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.

Curtis, G.P., Fox, P., Kohler, M., and Davis, J.A., 2004,

Comparison of in situ uranium K _D values with a laboratory determined surface complexation model: Applied Geochemistry, v. 19, p. 1643-1653, doi:10.1016/j.apgeochem.2004.03.004.

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., 1999,

A compartmentalized approach to simulating redox zones in contaminated aquifers: Stanford, Calif., Stanford University, Department of Geological and Environmental Sciences, unpublished Ph.D. thesis, 182 p.

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.

Corapcioglu, M.Y., and Baehr, A.L., 1987,

A compositional multiphase model for groundwater contamination by petroleum products--1, Theoretical considerations: Water Resources Research, v. 23, no. 1, p. 191-200.

Baehr, A.L., and Corapcioglu, M.Y., 1987,

A compositional multiphase model for groundwater contamination by petroleum products--2, numerical solution: Water Resources Research, v. 23, no. 1, p. 201-213.

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.

Grove, D.B., and Stollenwerk, K.G., 1984,

Computer model of one-dimensional equilibrium controlled sorption processes: U.S. Geological Survey Water-Resources Investigations Report 84-4059, 37 p.

Day-Lewis, F.D., Person, M.A., and Konikow, L.F., 1995,

A computer program (MACPUMP) for interactive aquifer-test analysis: U.S. Geological Survey Water-Resources Investigations Report 95-4012, 32 p.

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

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

Plummer, L.N., Parkhurst, D.L., Fleming, G.W., and Dunkle, S.A., 1988,

A computer program incorporating Pitzer's equations for calculation of geochemical reactions in brines: U.S. Geological Survey Water-Resources Investigations Report 88-4153, 310 p.

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.

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

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

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.

Moench, A.F., 1989,

Convergent radial dispersion--A Laplace transform solution for aquifer tracer testing: Water Resources Research, v. 25, no. 3, p. 439-447.

Moench, A.F., 1991,

Convergent radial dispersion--A note on evaluation of the Laplace transform solution: Water Resources Research, v. 27, no. 12, p. 3261-3264, 91WR02301, doi:10.1029/91WR02301.

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.

Kipp, K.L., Russell, T.F., and Otto, J.S., 1992,

D4Z--A new renumbering for iterative solution of ground-water flow and solute-transport equations, in Russell, T.F., and others, eds., Computational methods in water resources IX, v. 1. Numerical methods in water resources: Boston, Computational Mechanics Publications, p. 495-502.

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,

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