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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Temporal dynamics of biogeochemical processes at the Norman Landfill site Temporal dynamics of biogeochemical processes at the Norman Landfill site
The temporal variability observed in redox sensitive species in groundwater can be attributed to coupled hydrological, geochemical, and microbial processes. These controlling processes are typically nonstationary, and distributed across various time scales. Therefore, the purpose of this study is to investigate biogeochemical data sets from a municipal landfill site to identify the...
Authors
Bhavna Arora, Binayak P. Mohanty, Jennifer McGuire, Isabelle Cozzarelli
Quantifying wetland–aquifer interactions in a humid subtropical climate region: An integrated approach Quantifying wetland–aquifer interactions in a humid subtropical climate region: An integrated approach
Wetlands are widely recognized as sentinels of global climate change. Long-term monitoring data combined with process-based modeling has the potential to shed light on key processes and how they change over time. This paper reports the development and application of a simple water balance model based on long-term climate, soil, vegetation and hydrological dynamics to quantify groundwater...
Authors
Itza Mendoza-Sanchez, Mantha S. Phanikumar, Jie Niu, Jason Masoner, Isabelle Cozzarelli, Jennifer T. McGuire
Determination of nonylphenol isomers in landfill leachate and municipal wastewater using steam distillation extraction coupled with comprehensive two-dimensional gas chromatography/time-of-flight mass spectrometry Determination of nonylphenol isomers in landfill leachate and municipal wastewater using steam distillation extraction coupled with comprehensive two-dimensional gas chromatography/time-of-flight mass spectrometry
4-Nonylphenols (4-NPs) are known endocrine disruptors and by-products of the microbial degradation of nonylphenol polyethoxylate surfactants. One of the challenges to understanding the toxic effects of nonylphenols is the large number of isomers that may exist in environmental samples. In order to attribute toxic effects to specific compounds, a method is needed for the separation and...
Authors
Caixiang Zhang, Robert P. Eganhouse, James Pontolillo, Isabelle Cozzarelli, Yanxin Wang
Emerging contaminants at a closed and an operating landfill in Oklahoma Emerging contaminants at a closed and an operating landfill in Oklahoma
Landfills are the final depositories for a wide range of solid waste from both residential and commercial sources, and therefore have the potential to produce leachate containing many organic compounds found in consumer products such as pharmaceuticals, plasticizers, disinfectants, cleaning agents, fire retardants, flavorings, and preservatives, known as emerging contaminants (ECs)...
Authors
William Andrews, Jason Masoner, Isabelle Cozzarelli
GeoChip-based analysis of microbial functional gene diversity in a landfill leachate-contaminated aquifer GeoChip-based analysis of microbial functional gene diversity in a landfill leachate-contaminated aquifer
The functional gene diversity and structure of microbial communities in a shallow landfill leachate-contaminated aquifer were assessed using a comprehensive functional gene array (GeoChip 3.0). Water samples were obtained from eight wells at the same aquifer depth immediately below a municipal landfill or along the predominant downgradient groundwater flowpath. Functional gene richness...
Authors
Zhenmei Lu, Zhili He, Victoria Parisi, Sanghoon Kang, Ye Deng, Joy Van Nostrand, Jason Masoner, Isabelle Cozzarelli, Joseph Suflita, Jizhong Zhou
Stable-isotope ratios of hydrogen and oxygen in precipitation at Norman, Oklahoma, 1996–2008 Stable-isotope ratios of hydrogen and oxygen in precipitation at Norman, Oklahoma, 1996–2008
Precipitation samples for measurement of stable-isotope ratios of hydrogen (delta2H) and oxygen (delta18O) were collected at the Norman Landfill Research Site in Norman, Oklahoma, from May 1996 to October 2008. Rainfall amounts also were measured at the site (U.S. Geological Survey gaging station 07229053) during the collection period. The delta2H of precipitation samples ranged from...
Authors
Jeanne Jaeschke, Martha Scholl, Isabelle Cozzarelli, Jason Masoner, Scott Christenson, Haiping Qi
In situ rates of sulfate reduction in response to geochemical perturbations In situ rates of sulfate reduction in response to geochemical perturbations
Rates of in situ microbial sulfate reduction in response to geochemical perturbations were determined using Native Organism Geochemical Experimentation Enclosures (NOGEEs), a new in situ technique developed to facilitate evaluation of controls on microbial reaction rates. NOGEEs function by first trapping a native microbial community in situ and then subjecting it to geochemical...
Authors
T.A. Kneeshaw, J.T. McGuire, Isabelle Cozzarelli, E.W. Smith
Biogeochemical evolution of a landfill leachate plume, Norman, Oklahoma Biogeochemical evolution of a landfill leachate plume, Norman, Oklahoma
Leachate from municipal landfills can create groundwater contaminant plumes that may last for decades to centuries. The fate of reactive contaminants in leachate-affected aquifers depends on the sustainability of biogeochemical processes affecting contaminant transport. Temporal variations in the configuration of redox zones downgradient from the Norman Landfill were studied for more...
Authors
Isabelle Cozzarelli, J.K. Bohlke, Jason Masoner, George Breit, Michelle Lorah, Michele L. Tuttle, Jeanne Jaeschke
Methane oxidation in a crude oil contaminated aquifer: Delineation of aerobic reactions at the plume fringes Methane oxidation in a crude oil contaminated aquifer: Delineation of aerobic reactions at the plume fringes
High resolution direct-push profiling over short vertical distances was used to investigate CH4 attenuation in a petroleum contaminated aquifer near Bemidji, Minnesota. The contaminant plume was delineated using dissolved gases, redox sensitive components, major ions, carbon isotope ratios in CH4 and CO2, and the presence of methanotrophic bacteria. Sharp redox gradients were observed...
Authors
R.T. Amos, Barbara Bekins, Geoffrey Delin, Isabelle Cozzarelli, D.W. Blowes, J. D. Kirshtein
Fate and transport of petroleum hydrocarbons in the subsurface near Cass Lake, Minnesota Fate and transport of petroleum hydrocarbons in the subsurface near Cass Lake, Minnesota
The U.S. Geological Survey (USGS) investigated the natural attenuation of subsurface petroleum hydrocarbons leaked over an unknown number of years from an oil pipeline under the Enbridge Energy Limited Partnership South Cass Lake Pumping Station, in Cass Lake, Minnesota. Three weeks of field work conducted between May 2007 and July 2008 delineated a dissolved plume of aromatic...
Authors
Dina Drennan, Barbara Bekins, Ean Warren, Isabelle Cozzarelli, Mary Jo Baedecker, William Herkelrath, Geoffrey Delin, Robert Rosenbauer, Pamela Campbell
In situ measurements of volatile aromatic hydrocarbon biodegradation rates in groundwater In situ measurements of volatile aromatic hydrocarbon biodegradation rates in groundwater
Benzene and alkylbenzene biodegradation rates and patterns were measured using an in situ microcosm in a crude-oil contaminated aquifer near Bemidji, Minnesota. Benzene-D6, toluene, ethylbenzene, o-, m- and p-xylenes and four pairs of C3- and C4-benzenes were added to an in situ microcosm and studied over a 3-year period. The microcosm allowed for a mass-balance approach and...
Authors
I.M. Cozzarelli, B.A. Bekins, R.P. Eganhouse, E. Warren, H.I. Essaid
Biogeochemistry at a wetland sediment-alluvial aquifer interface in a landfill leachate plume Biogeochemistry at a wetland sediment-alluvial aquifer interface in a landfill leachate plume
The biogeochemistry at the interface between sediments in a seasonally ponded wetland (slough) and an alluvial aquifer contaminated with landfill leachate was investigated to evaluate factors that can effect natural attenuation of landfill leachate contaminants in areas of groundwater/surface-water interaction. The biogeochemistry at the wetland-alluvial aquifer interface differed...
Authors
M.M. Lorah, I.M. Cozzarelli, J.K. Böhlke
Filter Total Items: 13
Science and Products
Filter Total Items: 21
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No Result Found
Filter Total Items: 117
Temporal dynamics of biogeochemical processes at the Norman Landfill site Temporal dynamics of biogeochemical processes at the Norman Landfill site
The temporal variability observed in redox sensitive species in groundwater can be attributed to coupled hydrological, geochemical, and microbial processes. These controlling processes are typically nonstationary, and distributed across various time scales. Therefore, the purpose of this study is to investigate biogeochemical data sets from a municipal landfill site to identify the...
Authors
Bhavna Arora, Binayak P. Mohanty, Jennifer McGuire, Isabelle Cozzarelli
Quantifying wetland–aquifer interactions in a humid subtropical climate region: An integrated approach Quantifying wetland–aquifer interactions in a humid subtropical climate region: An integrated approach
Wetlands are widely recognized as sentinels of global climate change. Long-term monitoring data combined with process-based modeling has the potential to shed light on key processes and how they change over time. This paper reports the development and application of a simple water balance model based on long-term climate, soil, vegetation and hydrological dynamics to quantify groundwater...
Authors
Itza Mendoza-Sanchez, Mantha S. Phanikumar, Jie Niu, Jason Masoner, Isabelle Cozzarelli, Jennifer T. McGuire
Determination of nonylphenol isomers in landfill leachate and municipal wastewater using steam distillation extraction coupled with comprehensive two-dimensional gas chromatography/time-of-flight mass spectrometry Determination of nonylphenol isomers in landfill leachate and municipal wastewater using steam distillation extraction coupled with comprehensive two-dimensional gas chromatography/time-of-flight mass spectrometry
4-Nonylphenols (4-NPs) are known endocrine disruptors and by-products of the microbial degradation of nonylphenol polyethoxylate surfactants. One of the challenges to understanding the toxic effects of nonylphenols is the large number of isomers that may exist in environmental samples. In order to attribute toxic effects to specific compounds, a method is needed for the separation and...
Authors
Caixiang Zhang, Robert P. Eganhouse, James Pontolillo, Isabelle Cozzarelli, Yanxin Wang
Emerging contaminants at a closed and an operating landfill in Oklahoma Emerging contaminants at a closed and an operating landfill in Oklahoma
Landfills are the final depositories for a wide range of solid waste from both residential and commercial sources, and therefore have the potential to produce leachate containing many organic compounds found in consumer products such as pharmaceuticals, plasticizers, disinfectants, cleaning agents, fire retardants, flavorings, and preservatives, known as emerging contaminants (ECs)...
Authors
William Andrews, Jason Masoner, Isabelle Cozzarelli
GeoChip-based analysis of microbial functional gene diversity in a landfill leachate-contaminated aquifer GeoChip-based analysis of microbial functional gene diversity in a landfill leachate-contaminated aquifer
The functional gene diversity and structure of microbial communities in a shallow landfill leachate-contaminated aquifer were assessed using a comprehensive functional gene array (GeoChip 3.0). Water samples were obtained from eight wells at the same aquifer depth immediately below a municipal landfill or along the predominant downgradient groundwater flowpath. Functional gene richness...
Authors
Zhenmei Lu, Zhili He, Victoria Parisi, Sanghoon Kang, Ye Deng, Joy Van Nostrand, Jason Masoner, Isabelle Cozzarelli, Joseph Suflita, Jizhong Zhou
Stable-isotope ratios of hydrogen and oxygen in precipitation at Norman, Oklahoma, 1996–2008 Stable-isotope ratios of hydrogen and oxygen in precipitation at Norman, Oklahoma, 1996–2008
Precipitation samples for measurement of stable-isotope ratios of hydrogen (delta2H) and oxygen (delta18O) were collected at the Norman Landfill Research Site in Norman, Oklahoma, from May 1996 to October 2008. Rainfall amounts also were measured at the site (U.S. Geological Survey gaging station 07229053) during the collection period. The delta2H of precipitation samples ranged from...
Authors
Jeanne Jaeschke, Martha Scholl, Isabelle Cozzarelli, Jason Masoner, Scott Christenson, Haiping Qi
In situ rates of sulfate reduction in response to geochemical perturbations In situ rates of sulfate reduction in response to geochemical perturbations
Rates of in situ microbial sulfate reduction in response to geochemical perturbations were determined using Native Organism Geochemical Experimentation Enclosures (NOGEEs), a new in situ technique developed to facilitate evaluation of controls on microbial reaction rates. NOGEEs function by first trapping a native microbial community in situ and then subjecting it to geochemical...
Authors
T.A. Kneeshaw, J.T. McGuire, Isabelle Cozzarelli, E.W. Smith
Biogeochemical evolution of a landfill leachate plume, Norman, Oklahoma Biogeochemical evolution of a landfill leachate plume, Norman, Oklahoma
Leachate from municipal landfills can create groundwater contaminant plumes that may last for decades to centuries. The fate of reactive contaminants in leachate-affected aquifers depends on the sustainability of biogeochemical processes affecting contaminant transport. Temporal variations in the configuration of redox zones downgradient from the Norman Landfill were studied for more...
Authors
Isabelle Cozzarelli, J.K. Bohlke, Jason Masoner, George Breit, Michelle Lorah, Michele L. Tuttle, Jeanne Jaeschke
Methane oxidation in a crude oil contaminated aquifer: Delineation of aerobic reactions at the plume fringes Methane oxidation in a crude oil contaminated aquifer: Delineation of aerobic reactions at the plume fringes
High resolution direct-push profiling over short vertical distances was used to investigate CH4 attenuation in a petroleum contaminated aquifer near Bemidji, Minnesota. The contaminant plume was delineated using dissolved gases, redox sensitive components, major ions, carbon isotope ratios in CH4 and CO2, and the presence of methanotrophic bacteria. Sharp redox gradients were observed...
Authors
R.T. Amos, Barbara Bekins, Geoffrey Delin, Isabelle Cozzarelli, D.W. Blowes, J. D. Kirshtein
Fate and transport of petroleum hydrocarbons in the subsurface near Cass Lake, Minnesota Fate and transport of petroleum hydrocarbons in the subsurface near Cass Lake, Minnesota
The U.S. Geological Survey (USGS) investigated the natural attenuation of subsurface petroleum hydrocarbons leaked over an unknown number of years from an oil pipeline under the Enbridge Energy Limited Partnership South Cass Lake Pumping Station, in Cass Lake, Minnesota. Three weeks of field work conducted between May 2007 and July 2008 delineated a dissolved plume of aromatic...
Authors
Dina Drennan, Barbara Bekins, Ean Warren, Isabelle Cozzarelli, Mary Jo Baedecker, William Herkelrath, Geoffrey Delin, Robert Rosenbauer, Pamela Campbell
In situ measurements of volatile aromatic hydrocarbon biodegradation rates in groundwater In situ measurements of volatile aromatic hydrocarbon biodegradation rates in groundwater
Benzene and alkylbenzene biodegradation rates and patterns were measured using an in situ microcosm in a crude-oil contaminated aquifer near Bemidji, Minnesota. Benzene-D6, toluene, ethylbenzene, o-, m- and p-xylenes and four pairs of C3- and C4-benzenes were added to an in situ microcosm and studied over a 3-year period. The microcosm allowed for a mass-balance approach and...
Authors
I.M. Cozzarelli, B.A. Bekins, R.P. Eganhouse, E. Warren, H.I. Essaid
Biogeochemistry at a wetland sediment-alluvial aquifer interface in a landfill leachate plume Biogeochemistry at a wetland sediment-alluvial aquifer interface in a landfill leachate plume
The biogeochemistry at the interface between sediments in a seasonally ponded wetland (slough) and an alluvial aquifer contaminated with landfill leachate was investigated to evaluate factors that can effect natural attenuation of landfill leachate contaminants in areas of groundwater/surface-water interaction. The biogeochemistry at the wetland-alluvial aquifer interface differed...
Authors
M.M. Lorah, I.M. Cozzarelli, J.K. Böhlke
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