Isabelle M. Cozzarelli, Ph.D.
Isabelle Cozzarelli is a Research Hydrologist (Scientist Emerita) with the USGS Geology, Energy & Minerals (GEM) Science Center in Reston, VA.
Dr. Isabelle Cozzarelli retired as a Senior Research Scientist and currently serves as a Scientist Emerita affiliated with the Geology, Energy & Minerals Science Center and the Reston Biogeochemical Processes in Groundwater Laboratory. Isabelle uses a combined field and laboratory experimental approach to investigate biogeochemical processes in shallow groundwater and surface water environments that affect water availability. She uses a multi-disciplinary and multi-scale approach to study processes in environments stressed by anthropogenic inputs of biodegradable carbon, such as crude oil, landfill leachate, and oil and gas wastes.
Professional Experience
2020-present: Research Hydrologist, USGS, Geology, Energy & Minerals Science Center, Reston, VA, USA
2017-2020: Research Hydrologist, USGS Water Mission Area Headquarters, Reston, VA, USA
1985-2017: Research Hydrologist, USGS National Research Program, USGS, Reston, Virginia, USA
1983-1985: Research Assistant, University of Virginia, Charlottesville, Virginia, USA
Education and Certifications
Ph.D. University of Virginia, Environmental Sciences-Geochemistry, 1993
M.S. University of Virginia, Environmental Sciences-Geochemistry, 1986
B.S. University of Rochester, Geomechanics, 1983
Affiliations and Memberships*
2016-present: Adjunct Faculty, Department of Geosciences, Virginia Tech
Honors and Awards
2024: Senior Scientist (ST), Federal Government
2023: Friend of Water-Rock Interaction & Applied Isotope Geochemistry Award, International Association of Geochemistry
2017: USGS Meritorious Service Award
2005: Elected GSA Fellow
2005: USGS Superior Service Award
Science and Products
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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
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
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
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
Sources of sulfate supporting anaerobic metabolism in a contaminated aquifer Sources of sulfate supporting anaerobic metabolism in a contaminated aquifer
Field and laboratory techniques were used to identify the biogeochemical factors affecting sulfate reduction in a shallow, unconsolidated alluvial aquifer contaminated with landfill leachate. Depth profiles of 35S-sulfate reduction rates in aquifer sediments were positively correlated with the concentration of dissolved sulfate. Manipulation of the sulfate concentration in samples...
Authors
G.A. Ulrich, G. N. Breit, I.M. Cozzarelli, J.M. Suflita
Microbial ecology of a crude oil contaminated aquifer Microbial ecology of a crude oil contaminated aquifer
Detailed microbial analyses of a glacial outwash aquifer contaminated by crude oil provide insights into the pattern of microbial succession from iron reducing to methanogenic in the anaerobic portion of the contaminant plume. We analysed sediments from this area for populations of aerobes, iron reducers, fermenters and methanogens, using the most probable number method. On the basis of...
Authors
B.A. Bekins, I.M. Cozzarelli, E. Warren, E.M. Godsy
Anaerobic methane oxidation in a landfill-leachate plume Anaerobic methane oxidation in a landfill-leachate plume
The alluvial aquifer adjacent to Norman Landfill, OK, provides an excellent natural laboratory for the study of anaerobic processes impacting landfill-leachate contaminated aquifers. We collected groundwaters from a transect of seven multilevel wells ranging in depth from 1.3 to 11 m that were oriented parallel to the flow path. The center of the leachate plume was characterized by (1)...
Authors
Ethan L. Grossman, Luis A. Cifuentes, Isabelle M. Cozzarelli
Microbially mediated alteration of iron mineral phases in contaminated sedimentary aquifers Microbially mediated alteration of iron mineral phases in contaminated sedimentary aquifers
No abstract available.
Authors
J.S. Herman, A.L. Mills, Isabelle M. Cozzarelli
Progression of natural attenuation processes at a crude oil spill site: II. Controls on spatial distribution of microbial populations Progression of natural attenuation processes at a crude oil spill site: II. Controls on spatial distribution of microbial populations
A multidisciplinary study of a crude-oil contaminated aquifer shows that the distribution of microbial physiologic types is strongly controlled by the aquifer properties and crude oil location. The microbial populations of four physiologic types were analyzed together with permeability, pore-water chemistry, nonaqueous oil content, and extractable sediment iron. Microbial data from three...
Authors
B.A. Bekins, I.M. Cozzarelli, E.M. Godsy, E. Warren, H.I. Essaid, M.E. Tuccillo
Progression of natural attenuation processes at a crude-oil spill site . I. Geochemical evolution of the plume Progression of natural attenuation processes at a crude-oil spill site . I. Geochemical evolution of the plume
A 16-year study of a hydrocarbon plume shows that the extent of contaminant migration and compound-specific behavior have changed as redox reactions, most notably iron reduction, have progressed over time. Concentration changes at a small scale, determined from analysis of pore-water samples drained from aquifer cores, are compared with concentration changes at the plume scale...
Authors
I.M. Cozzarelli, B.A. Bekins, M.J. Baedecker, G. R. Aiken, R.P. Eganhouse, M.E. Tuccillo
Filter Total Items: 13
Science and Products
Filter Total Items: 21
Filter Total Items: 34
No Result Found
Filter Total Items: 117
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
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
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
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
Sources of sulfate supporting anaerobic metabolism in a contaminated aquifer Sources of sulfate supporting anaerobic metabolism in a contaminated aquifer
Field and laboratory techniques were used to identify the biogeochemical factors affecting sulfate reduction in a shallow, unconsolidated alluvial aquifer contaminated with landfill leachate. Depth profiles of 35S-sulfate reduction rates in aquifer sediments were positively correlated with the concentration of dissolved sulfate. Manipulation of the sulfate concentration in samples...
Authors
G.A. Ulrich, G. N. Breit, I.M. Cozzarelli, J.M. Suflita
Microbial ecology of a crude oil contaminated aquifer Microbial ecology of a crude oil contaminated aquifer
Detailed microbial analyses of a glacial outwash aquifer contaminated by crude oil provide insights into the pattern of microbial succession from iron reducing to methanogenic in the anaerobic portion of the contaminant plume. We analysed sediments from this area for populations of aerobes, iron reducers, fermenters and methanogens, using the most probable number method. On the basis of...
Authors
B.A. Bekins, I.M. Cozzarelli, E. Warren, E.M. Godsy
Anaerobic methane oxidation in a landfill-leachate plume Anaerobic methane oxidation in a landfill-leachate plume
The alluvial aquifer adjacent to Norman Landfill, OK, provides an excellent natural laboratory for the study of anaerobic processes impacting landfill-leachate contaminated aquifers. We collected groundwaters from a transect of seven multilevel wells ranging in depth from 1.3 to 11 m that were oriented parallel to the flow path. The center of the leachate plume was characterized by (1)...
Authors
Ethan L. Grossman, Luis A. Cifuentes, Isabelle M. Cozzarelli
Microbially mediated alteration of iron mineral phases in contaminated sedimentary aquifers Microbially mediated alteration of iron mineral phases in contaminated sedimentary aquifers
No abstract available.
Authors
J.S. Herman, A.L. Mills, Isabelle M. Cozzarelli
Progression of natural attenuation processes at a crude oil spill site: II. Controls on spatial distribution of microbial populations Progression of natural attenuation processes at a crude oil spill site: II. Controls on spatial distribution of microbial populations
A multidisciplinary study of a crude-oil contaminated aquifer shows that the distribution of microbial physiologic types is strongly controlled by the aquifer properties and crude oil location. The microbial populations of four physiologic types were analyzed together with permeability, pore-water chemistry, nonaqueous oil content, and extractable sediment iron. Microbial data from three...
Authors
B.A. Bekins, I.M. Cozzarelli, E.M. Godsy, E. Warren, H.I. Essaid, M.E. Tuccillo
Progression of natural attenuation processes at a crude-oil spill site . I. Geochemical evolution of the plume Progression of natural attenuation processes at a crude-oil spill site . I. Geochemical evolution of the plume
A 16-year study of a hydrocarbon plume shows that the extent of contaminant migration and compound-specific behavior have changed as redox reactions, most notably iron reduction, have progressed over time. Concentration changes at a small scale, determined from analysis of pore-water samples drained from aquifer cores, are compared with concentration changes at the plume scale...
Authors
I.M. Cozzarelli, B.A. Bekins, M.J. Baedecker, G. R. Aiken, R.P. Eganhouse, M.E. Tuccillo
Filter Total Items: 13
*Disclaimer: Listing outside positions with professional scientific organizations on this Staff Profile are for informational purposes only and do not constitute an endorsement of those professional scientific organizations or their activities by the USGS, Department of the Interior, or U.S. Government