Baehr, A. L., and R. J. Baker, Use of a reactive gas-transport model to determine rates of hydrocarbon biodegradation in unsaturated porous media, Water Resourc. Res., 31, 2877-2882, 1995.
Baker, R. J., Baehr, A. L., and M. A. Lahvis, Determination of hydrocarbon biodegradation rates in gasoline-contaminated sediment, J. Contam. Hyd., (in press).
Cozarelli, I. M., J. S. Herman, and M. J. Baedecker, Fate of microbial metabolites of hydrocarbon in a coastal plain aquifer: The role of the electron acceptors, Environ. Sci. and Tech., 29, 358-369, 1995.
Lahvis, M. A., and A. L. Baehr, Estimation of rates of aerobic hydrocarbon biodegradation by simulation of gas transport in the unsaturated zone, Water Resourc. Res., 32, 2231-2249, 1996.
USGS PUBLICATIONS:
Baehr, A. L., J. M. Fischer, M. A. Lahvis, R. J. Baker, and N. P. Smith, Method for estimating rates of microbial degradation of hydrocarbons based on gas transport in the unsaturated zone at a gasoline-spill site in Galloway Township, New Jersey, in Mallard, G.E., and D.A. Aronson, 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, 250-255, 1991.
Baehr, A. L., and J. M. Fischer, Overview of research on the transport, microbial degradation, and remediation of hydrocarbons at a subsurface gasoline-spill site in Galloway Township, New Jersey, in Morganwalp, D. W., and D. A. Aronson, 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, 1, 1-6, 1996.
Baker, R. J., J. M. Fischer, N. P. Smith, S. A. Kohenlein, and A. L. Baehr, Gas chromatographic methods for determining the composition of the vapor phase in gasoline-contaminated soils, in Mallard, G.E., and D. A. Aronson, 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, 280-286, 1991.
Baker, R. J., and A. L. Baehr, Use of column studies and a reactive transport model to measure biodegradation rates of hydrocarbons, in Morganwalp, D. W., and D. A. Aronson, 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, 1, 43-48, 1996.
Bruell, C. J., C. D. Gilbert, and A. L. Baehr, Non-Fickian vapor transport in sand columns contaminated with volatile organic compounds in Mallard, G. E., and D. A. Aronson, 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, 294-300, 1991.
Fischer, J. M., A. L. Baehr, and N. P. Smith, An investigation of the transport and microbial degradation of hydrocarbons in the subsurface at a gasoline-spill site in Galloway Township, New Jersey, in Mallard, G. E., and D. A. Aronson, 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, 243-249, 1991.
Fischer, J. M., R. J. Baker, and A. L. Baehr, Determination of vapor-phase diffusion coefficients for unsaturated-zone sediments at Galloway Township, New Jersey, in Morganwalp, D. W., and D. A. Aronson, 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, 1, 35-42, 1996.
Fischer, J. M., N. P. Smith and A. L. Baehr, Hydrogeology, contaminant distribution, and biodegradation processes at a gasoline-spill research site in Galloway Township, New Jersey, in Morganwalp, D. W., and D. A. Aronson, 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, 1, 7-16, 1996.
Joss, C. J., and A. L. Baehr, Documentation of AIR3D, an adaptation of the ground-water-flow code MODFLOW to simulate three-dimensional air flow in the unsaturated zone: U.S. Geological Survey Open-File Report 94-533, 154 p., 1995.
Joss, C. J., and A. L. Baehr, A multispecies transport model to simulate vapor extraction and bioventing remediation of unsaturated zones contaminated with gasoline, in Morganwalp, D. W., and D. A. Aronson, 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, 1, 61-64, 1996.
Joss, C. J., and A. L. Baehr, Documentation of AIR2D, a computer program to simulate two-dimensional axisymmetric air flow in the unsaturated zone: U.S. Geological Survey Open-File Report 97-588, 106 p., 1997.
Lahvis, M. A., A. L. Baehr, and J. M. Fischer, Method for estimating the rate of microbial degradation of hydrocarbons associated with bioventing at a gasoline-spill site in Galloway Township, New Jersey, in Morganwalp, D. W., and D. A. Aronson, 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, 1, 27-34, 1996.
Lahvis, M.A., and Baehr, A.L., Documentation of R-UNSAT, a computer model for the simulation of reactive, multispecies transport in the unsaturated zone: U.S. Geological Survey Open-File Report 97-630, 104 p., 1997.
Nolan, J. G., R. J. Baker, and A. L. Baehr, Method for monitoring biodegradation of hydrocarbons in unsaturated porous media, in Morganwalp, D. W., and D. A. Aronson, 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, 1, 49-54, 1996.
Welty, C., A. L. Baehr, C. J. Joss, and J. A. Dillow, Use of mathematical programming coupled with a transport model to optimize the design of vapor- extraction systems in Mallard, G. E., and D. A. Aronson, 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, 276-279, 1991.
Welty, C., C. J. Joss, and A. L. Baehr,
Optimizing the design of vapor
extraction remediation systems for removal of organic contaminants from
the unsaturated zone, in Morganwalp, D. W., and D. A. Aronson, 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,
1, 55-60, 1996.
THESES:
Baker, R. J., A laboratory method for quantifying the rate of microbial degradation of hydrocarbons in unsaturated porous media, Philadelphia, Pa., Drexel University, Environmental Studies Institute, unpublished Ph.D. dissertation, 235 p., 1993.
Cozzarelli, I.M., The biogeochemical fate of organic acids in a shallow aquifer contaminated with gasoline, Charlottesville, Virginia, University of Virginia, Department of Environmental Sciences, unpublished Ph.D. dissertation, 240 p., 1993.
Garges, J., The relative importance between advection and dispersion for solutes in the saturated zone and vapors in the unsaturated zone, Philadelphia, Pa., Drexel University, Department of Civil Engineering, unpublished M.S. thesis, 65 p., 1996.
Joss, C. J., A multispecies transport model to simulate vapor extraction from the unsaturated zone, Philadelphia, Pa., Drexel University, Department of Civil Engineering, unpublished Ph.D. dissertation, 145 p., 1993.
Lahvis, M. A., Estimating rates of microbial degradation of hydrocarbons at a gasoline-spill site based on vapor diffusion modeling in the unsaturated zone, Philadelphia, Pa., Drexel University, Department of Civil Engineering, unpublished Ph.D. dissertation, 204 p., 1993.
Nolan, J.G., A method to determine the stoichiometry between carbon
dioxide, oxygen and hydrocarbons for microbial reactions in porous media,
Philadelphia, Pa., Drexel University, Department of Civil Engineering,
unpublished Ph.D. dissertation, 101 p., 1994.
FACTSHEETS:
Quantifying transport of volatile organic contaminants form point and nonpoint sources using R-UNSAT: A computer model for simulating reactive transport in the unsaturated zone
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