Contamination from Sources with Mixed Wastes
The thousands of sampling ports in the subsurface sampling array used for the large-scale, natural-gradient tracer test created a mind-boggling number of water samples. In later stages of the test over 4,000 samples were collected during sampling field trips (circa 1985 to 1986) -- from the Cape Cod Site
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Many contaminant sources introduce a diverse and complex mixture of organic and inorganic
contaminants into the subsurface, which can complicate characterizations of contaminant transport,
fate and effects. These sources include landfills and wastewater discharges. The resulting
contaminant plumes are difficult to characterize, manage, and remediate. Reactions among dissolved
chemicals, reactions between dissolved chemicals and the aquifer material, and microbial reactions
can significantly accelerate or retard contaminant movement and complicate natural and engineered
cleanup. Ongoing research focuses on defining source mixtures, developing field methods for
characterization, quantifying transport processes and development of simulation modeling
capabilities. Current research focuses on the following three areas:
Landfill Leachate in Alluvial Aquifers --
Norman, Oklahoma
Sewage Contamination in Sand and Gravel
Aquifers -- Cape Cod, Massachusetts
Mixed, Low-level Radioactive and Other Wastes
-- Amargosa Desert Research Site, Nevada
Program Headlines on Mixed Waste Contamination Research
Fact Sheets
New Publications
Upcoming Publications
- 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).
- 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).
- 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).
- 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).
Newly Published
- 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.
- 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.
- 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.
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