Subsurface Point-Source Contamination
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A view of the side of a trench cut into the Cape Cod aquifer showing what is commonly referred to as a "homogeneous" aquifer. Studies of the distribution of the horizontal conductivity resulted in a range of conductivity from 0.02 to 0.34 centimeters per second, which demonstrated that the aquifer is not homogeneous -- from the Cape Cod Site
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The Toxics Program conducts intensive field investigations to study common classes of subsurface
point-source contamination. (more information)
Complete listing of point-source investigations and projects >>
Other Subsurface Point-Source Investigations
Subsurface Point-Source Contamination Information
Meetings and Conferences
- The USGS cosponsors the special session Hydrogeological Research Sites and Observatories at the 2008 AGU Fall Meeting, San Francisco, California, December 15-19, 2008
- USGS sponsors the special session In Situ Approaches for Measuring Biodegradation Potential and Rates in Subsurface Environments at the 2008 Joint Annual Meeting, Houston, Texas, October 5-9, 2008
- USGS and the University of Wisconsin-Madison are cosponsoring the joint session A Celebration of Soil Science, Solute Transport, and National-Scale Water-Quality Research: In Honor of Jacob Rubin at the 2008 Joint Annual Meeting, Houston, Texas, October 5-9, 2008
- USGS and EPA host the USGS/EPA Workshop on Transport and Remediation of Chlorinated Solvents in Fractured Sedimentary Rocks, West Trenton, New Jersey, September 25, 2008
- USGS co-sponsor the special session Characterizing Ground-Water Flow and Chemical Transport in Fractured-Rock Aquifers at the 2008 Western Pacific Geophysics Meeting in Cairns, Australia, on July 29-August 1, 2008
New Publications
Upcoming Publications
- Biochemical indicators for the bioavailability of organic carbon in ground water: Chapelle, F.H., Bradley, P.M., Goode, D.J., Tiedeman, C., Lacombe, P.J., Kaiser, K., and Benner, R., Ground Water, doi:10.1111/j.1745-6584.2008.00493.x (IN PRESS).
- Biogeochemistry at a wetland sediment-alluvial aquifer interface in a landfill leachate plume: Lorah, M.M., Cozzarelli, I.M., and Bšhlke, J.K., Journal of Contaminant Hydrology, doi:10.1016/j.jconhyd.2008.11.008 (IN PRESS).
- Biological degradation of chloroethenes: Bradley, P.M., and Chapelle, F.H., in SERDP/ESTCP Monograph on Remediation of Dissolved-Phase Chlorinated Solvents: (IN PRESS).
- Case study of a full-scale evapotranspiration cover: McGuire, P.E., Andraski, B.J., and Archibald, R., Journal of Geotechnical and Geoenvironmental Engineering (IN PRESS).
- Comparison of pumped and diffusion sampling methods to monitor concentrations of perchlorate and explosive compounds in ground water, Camp Edwards, Cape Cod, Massachusetts, 2004-2005: LeBlanc, D.R., and Vroblesky, D.A., U.S. Geological Survey Scientific Investigations Report 2008-5159 (IN PRESS).
- Fate of consumer product chemicals in the subsurface environment--25 Years of research on Cape Cod, Massachusetts, USA: Barber, L.B., in Hill, M.C., ed., Groundwater Quality 2007--Securing Groundwater Quality in Urban and Industrial Environments: International Association of Hydrological Sciences IAHS Redbook (IN PRESS).
- Microbial characterization of nitrification in a shallow, nitrogen-contaminated aquifer, Cape Cod, Massachusetts and detection of a novel cluster associated with nitrifying Betaproteobacteria: Miller, D.N., and Smith, R.L., Journal of Contaminant Hydrology, doi:10.1016/j.jconhyd.2008.10.011 (IN PRESS).
- Occurrence and turnover of nitric oxide in a nitrogen-impacted sand and gravel aquifer: Smith, R.L., and Yoshinari, T., Environmental Science and Technology (IN PRESS).
- Prevalence of tumors in brown bullhead from three lakes in southeastern Massachusetts, 2002: Baumann, P.C., LeBlanc, D.R., Blazer, V.S., Meier, J.R., Hurley, S.T., and Kiryu, Y., U.S. Geological Survey Scientific Investigations Report 2008-5198 (IN PRESS).
- Subsurface fate and transport of 4-nonylphenol, 17Β-estradiol, and sulfamethoxazole: Barber, L.B., Meyer, M.T., LeBlanc, D.R., Kolpin, D.W., Bradley, P.M., Chapelle, F.H., and Rubio, F., in Hill, M.C., ed., Groundwater Quality 2007--Securing Groundwater Quality in Urban and Industrial Environments: International Association of Hydrological Sciences IAHS Redbook (IN PRESS).
- Transport of tritium contamination from the shallow unsaturated zone to the atmosphere in an arid environment: Garcia, C.A., Andraski, B.J., Stonestrom, D.A., Cooper, C.A., Johnson, M.J., Michel, R.L., and Wheatcraft, S.W., Vadose Zone Journal (IN PRESS).
- Use of inverse modeling methods to improve ground-water-modeling calibration and evaluate model-prediction uncertainty, Camp Edwards, Cape Cod, Massachusetts: Walter, D.A., and LeBlanc, D.R., U.S. Geological Survey Scientific Investigations Report 2007-5257 (IN PRESS).
New Publications
- Coupled effect of chemotaxis and growth on microbial distributions in organic-amended aquifer sediments--Observations from laboratory and field studies: Wang, M., Ford, R.M., and Harvey, R.W., 2008, Environmental Science and Technology, v. 41, no. 10, p. 3,556-3,562, doi:10.1021/es702392h.
- Influence of variable chemical conditions on EDTA-enhanced transport of metal ions in mildly acidic groundwater: Kent, D.B., Davis, J.A., Joye, J., and Curtis, G.P., 2008, Environmental Pollution, v. 153, no. 1, p. 44-52, doi:10.1016/j.envpol.2007.11.022.
- Biochemical indicators for the bioavailability of organic carbon in ground water: Chapelle, F.H., Bradley, P.M., Goode, D.J., Tiedeman, C., Lacombe, P.J., Kaiser, K., and Benner, R., 2008, Ground Water, doi:10.1111/j.1745-6584.2008.00493.x (Advanced Web release).
- Differences in evaporation between a floating pan and class A pan on land: Masoner, J.R., Stannard, D.I., and Christenson, S.C., 2008, Journal of the American Water Works Association, v. 44, no. 3, p. 552-561, doi:10.1111/j.1752-1688.2008.00181.x.
- The effect of terrace geology on ground-water movement and on the interaction of ground water and surface water on a mountainside near Mirror Lake, New Hampshire, USA: Winter, T.C., Buso, D.C., Shattuck, P.C., Harte, P.T., Vroblesky, D.A., and Goode, D.J., 2008, Hydrological Processes, v. 22, no. 1, p. 21-32, doi:10.1002/hyp.6593.
- Method for estimating spatially variable seepage loss and hydraulic conductivity in intermittent and ephemeral streams: Niswonger, R.G., Prudic, D.E., Fogg, G.E., Stonestrom, D.A., and Buckland, E.M., 2008, Water Resources Research, v. 44, W05418, doi:10.1029/2007WR006626.
- Pathogen and chemical transport in the karst limestone of the Biscayne aquifer--1. Revised conceptualization of groundwater flow: Renken, R.A., Cunningham, K.J., Shapiro, A.M., Harvey, R.W., Zygnerski, M.R., Metge, D.W., and Wacker, M.A., 2008, Water Resources Research, v. 44, W08429, doi:10.1029/2007WR006058.
- Pathogen and chemical transport in the karst limestone of the Biscayne aquifer--2. Chemical retention from diffusion and slow advection: Shapiro, A.M., Renken, R.A., Harvey, R.W., Zygnerski, M.R., and Metge, D.W., 2008, Water Resources Research, v. 44, W08430, doi:10.1029/2007WR006059.
- Pathogen and chemical transport in the karst limestone of the Biscayne aquifer--3. Use of microspheres to estimate the transport potential of Cryptosporidium parvum oocysts: Harvey, R.W., Metge, D.W., Shapiro, A.M., Renken, R.A., Osborn, C.L., Ryan, J.N., Cunningham, K.J., and Landkamer, L., 2008, Water Resources Research, v. 44, W08431, doi:10.1029/2007WR006060.
- Response to commentary on Observed methanogenic biodegradation rrogressions: Hostettler, F.D., Bekins, B.A., Rostad, C.E., and Herkelrath, W.N., 2008, Environmental Forensics, v. 9, no. 2-3, p. 121-126, doi:10.1080/15275920802115738.
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