Publications
Filter Total Items: 113
Centimeter-scale characterization of biogeochemical gradients at a wetland-aquifer interface using capillary electrophoresis Centimeter-scale characterization of biogeochemical gradients at a wetland-aquifer interface using capillary electrophoresis
Steep biogeochemical gradients were measured at mixing interfaces in a wetland-aquifer system impacted by landfill leachate in Norman, Oklahoma. The system lies within a reworked alluvial plain and is characterized by layered low hydraulic conductivity wetland sediments interbedded with sandy aquifer material. Using cm-scale passive diffusion samplers, "peepers", water samples were...
Authors
S. Baez-Cazull, J.T. McGuire, Isabelle M. Cozzarelli, A. Raymond, L. Welsh
Evaluation of sulfate reduction at experimentally induced mixing interfaces using small-scale push-pull tests in an aquifer-wetland system Evaluation of sulfate reduction at experimentally induced mixing interfaces using small-scale push-pull tests in an aquifer-wetland system
This paper presents small-scale push–pull tests designed to evaluate the kinetic controls on SO42- reduction in situ at mixing interfaces between a wetland and aquifer impacted by landfill leachate at the Norman Landfill research site, Norman, OK. Quantifying the rates of redox reactions initiated at interfaces is of great interest because interfaces have been shown to be zones of...
Authors
T.A. Kneeshaw, Jennifer T. McGuire, Erik W. Smith, Isabelle M. Cozzarelli
Recharge processes drive sulfate reduction in an alluvial aquifer contaminated with landfill leachate Recharge processes drive sulfate reduction in an alluvial aquifer contaminated with landfill leachate
Natural attenuation of contaminants in groundwater depends on an adequate supply of electron acceptors to stimulate biodegradation. In an alluvial aquifer contaminated with leachate from an unlined municipal landfill, the mechanism of recharge infiltration was investigated as a source of electron acceptors. Water samples were collected monthly at closely spaced intervals in the top 2 m...
Authors
M. A. Scholl, I.M. Cozzarelli, S. C. Christenson
Recharge processes in an alluvial aquifer riparian zone, Norman Landfill, Norman, Oklahoma, 1998-2000 Recharge processes in an alluvial aquifer riparian zone, Norman Landfill, Norman, Oklahoma, 1998-2000
Analyses of stable isotope profiles (d2H and d18O) in the saturated zone, combined with water-table fluctuations, gave a comprehensive picture of recharge processes in an alluvial aquifer riparian zone. At the Norman Landfill U.S. Geological Survey Toxic Substances Hydrology research site in Norman, Oklahoma, recharge to the aquifer appears to drive biodegradation, contributing fresh...
Authors
Martha Scholl, Scott Christenson, Isabelle Cozzarelli, Dale Ferree, Jeanne Jaeshke
Results of chemical and isotopic analyses of sediment and water from alluvium of the Canadian River near a closed municipal landfill, Norman, Oklahoma Results of chemical and isotopic analyses of sediment and water from alluvium of the Canadian River near a closed municipal landfill, Norman, Oklahoma
Results of physical and chemical analyses of sediment and water collected near a closed municipal landfill at Norman, Oklahoma are presented in this report. Sediment analyses are from 40 samples obtained by freeze-shoe coring at 5 sites, and 14 shallow (depth
Authors
George N. Breit, Michele L.W. Tuttle, Isabelle M. Cozzarelli, Scott C. Christenson, Jeanne B. Jaeschke, David L. Fey, Cyrus J. Berry
A simple method for calculating growth rates of petroleum hydrocarbon plumes A simple method for calculating growth rates of petroleum hydrocarbon plumes
Consumption of aquifer Fe(III) during biodegradation of ground water contaminants may result in expansion of a contaminant plume, changing the outlook for monitored natural attenuation. Data from two research sites contaminated with petroleum hydrocarbons show that toluene and xylenes degrade under methanogenic conditions, but the benzene and ethylbenzene plumes grow as aquifer Fe(III)...
Authors
B.A. Bekins, I.M. Cozzarelli, G.P. Curtis
Temporal changes in indicators of natural attenuation and physical controlling factors for a freshwater tidal wetland contaminated With chlorinated volatile organic compounds, West Branch Canal Creek, Aberdeen Proving Ground, Maryland, 1995-2001 Temporal changes in indicators of natural attenuation and physical controlling factors for a freshwater tidal wetland contaminated With chlorinated volatile organic compounds, West Branch Canal Creek, Aberdeen Proving Ground, Maryland, 1995-2001
No abstract available.
Authors
Michelle M. Lorah, Tracey A. Spencer, Angela L. McGinty
Preliminary assessment of microbial communities and biodegradation of chlorinated volatile organic compounds in wetlands at Cluster 13, Lauderick Creek area, Aberdeen Proving Ground, Maryland Preliminary assessment of microbial communities and biodegradation of chlorinated volatile organic compounds in wetlands at Cluster 13, Lauderick Creek area, Aberdeen Proving Ground, Maryland
A preliminary assessment of the microbial communities and biodegradation processes for chlorinated volatile organic compounds was con-ducted by the U.S. Geological Survey in wetlands at the Cluster 13, Lauderick Creek area at Aberdeen Proving Ground, Maryland. The U.S. Geological Survey collected wetland sediment samples from 11 sites in the Lauderick Creek area for microbial analyses...
Authors
Michelle M. Lorah, Mary A. Voytek, Tracey A. Spencer
The groundwater geochemistry of waste disposal facilities The groundwater geochemistry of waste disposal facilities
No abstract available.
Authors
P.L. Bjerg, H.-J. Albrechtsen, P. Kjeldsen, T. Christensen, Isabelle M. Cozzarelli
Volatile fuel hydrocarbons and MTBE in the environment Volatile fuel hydrocarbons and MTBE in the environment
No abstract available.
Authors
Isabelle M. Cozzarelli, A. L. Baehr
The Norman Landfill environmental research site: What happens to the waste in landfills? The Norman Landfill environmental research site: What happens to the waste in landfills?
No abstract available.
Authors
Scott C. Christenson, Isabelle M. Cozzarelli
Inverse modeling of BTEX dissolution and biodegradation at the Bemidji, MN crude-oil spill site Inverse modeling of BTEX dissolution and biodegradation at the Bemidji, MN crude-oil spill site
The U.S. Geological Survey (USGS) solute transport and biodegradation code BIOMOC was used in conjunction with the USGS universal inverse modeling code UCODE to quantify field-scale hydrocarbon dissolution and biodegradation at the USGS Toxic Substances Hydrology Program crude-oil spill research site located near Bemidji, MN. This inverse modeling effort used the extensive historical...
Authors
H.I. Essaid, I.M. Cozzarelli, R.P. Eganhouse, W.N. Herkelrath, B.A. Bekins, G. N. Delin