Publications
Filter Total Items: 109
Natural attenuation of volatile organic compounds (VOCs) in the leachate plume of a municipal landfill: Using alkylbenzenes as process probes
More than 70 individual VOCs were identified in the leachate plume of a closed municipal landfill. Concentrations were low when compared with data published for other landfills, and total VOCs accounted for less than 0.1% of the total dissolved organic carbon. The VOC concentrations in the core of the anoxic leachate plume are variable, but in all cases they were found to be near or below detectio
Authors
Robert P. Eganhouse, Isabelle M. Cozzarelli, Martha A. Scholl, L.L. Matthews
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 vertical
Authors
B.A. Bekins, I.M. Cozzarelli, E.M. Godsy, E. Warren, H.I. Essaid, M.E. Tuccillo
Assessment of volatile organic compounds in surface water at Canal Creek, Aberdeen Proving Ground, Maryland, November 1999–September 2000
The purpose of this report is to describe the occurrence and distribution of volatile organic compounds in surface-water samples collected by the U.S. Geological Survey in the Canal Creek area of Aberdeen Proving Ground, Maryland, from November 1999 through September 2000. The report describes the differences between years with below normal and normal precipitation,
the effects of seasons, tide s
Authors
Daniel J. Phelan, Lisa D. Olsen, Michael P. Senus, Tracey A. Spencer
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, determined from ana
Authors
I.M. Cozzarelli, B.A. Bekins, M.J. Baedecker, G. R. Aiken, R.P. Eganhouse, M.E. Tuccillo
Geochemical and microbiological methods for evaluating anaerobic processes in an aquifer contaminated by landfill leachate
No abstract available.
Authors
I.M. Cozzarelli, J.M. Suflita, G.A. Ulrich, S.H. Harris, M. A. Scholl, J.L. Schlottmann, S. Christenson
Assessment of volatile organic compounds in surface water at West Branch Canal Creek, Aberdeen Proving Ground, Maryland, 1999
The U.S. Geological Survey (USGS) collected 13 surface-water samples and 3 replicates from 5 sites in the West Branch Canal Creek area at Aberdeen Proving Ground from February through August 1999, as a part of an investigation of ground-water contamination and natural attenuation processes. The samples were analyzed for volatile organic compounds, including trichloroethylene, 1,1,2,2-tetrachloroet
Authors
Lisa D. Olsen, Tracey A. Spencer
Water-quality and water-level data for a freshwater tidal wetland, West Branch Canal Creek, Aberdeen Proving Ground, Maryland, October 1998-September 1999
This report presents water-quality data for ground-water and surface-water samples and water-level data collected by the U.S. Geological Survey from October 1998 through September 1999 at West Branch Canal Creek, Aberdeen Proving Ground, Maryland. The report also provides a description of the sampling and analytical methods that were used to collect and analyze the samples, and includes an evaluat
Authors
Tracey A. Spencer, Lisa D. Olsen, Michelle M. Lorah, Mastin M. Mount
Geochemical heterogeneity of a gasoline-contaminated aquifer
The scale of biogeochemical reactions was studied in a physically and chemically heterogeneous surficial Coastal Plain aquifer contaminated by a gasoline spill. The physical heterogeneity of the aquifer is manifested in two hydrologic units, a shallow local aquifer of perched water and a regional sandy aquifer. Over the studied vertical interval of 21.3 ft (6.5 m), concentrations of reactive speci
Authors
Isabelle M. Cozzarelli, Janet S. Herman, Mary Jo Baedecker, Jeffrey M. Fischer
Soil respiration at the Amargosa Desert Research site: A section in U.S. Geological Survey Toxic Substances Hydrology Program: Proceedings of the technical meeting, Charleston, South Carolina, March 8-12, 1999: Volume 3 (Part C) (WRI 99-4018C)
Automated opaque flux-chamber measurements of soil carbon dioxide (CO2) flux (soil respiration) into the atmosphere at the Amargosa Desert Research Site show seasonal and diel cycles of soil respiration that are closely linked with soil temperature and soil moisture. During 1998, soil respiration increased with soil warming through spring, reaching a maximum rate (not counting anomalously high val
Authors
Alan C. Riggs, Robert G. Striegl, Florentino B. Maestas
Iron reduction in the sediments of a hydrocarbon-contaminated aquifer
Sediments sampled at a hydrocarbon-contaminated, glacial-outwash, sandy aquifer near Bemidji, Minnesota, were analyzed for sediment-associated Fe with several techniques. Extraction with 0.5 M HCl dissolved poorly crystalline Fe oxides and small amounts of Fe in crystalline Fe oxides, and extracted Fe from phyllosilicates. Use of Ti-citrate-EDTA-bicarbonate results in more complete removal of crys
Authors
M.E. Tuccillo, I.M. Cozzarelli, J.S. Herman
Ground water contamination by crude oil near Bemidji, Minnesota
Ground-water contamination by crude oil, and other petroleum-based liquids, is a widespread problem. An average of 83 crude-oil spills occurred per year during 1994-96 in the United States, each spilling about 50,000 barrels of crude oil (U.S. Office of Pipeline Safety, electronic commun., 1997). An understanding of the fate of organic contaminants (such as oil and gasoline) in the subsurface is n
Authors
G. N. Delin, H.I. Essaid, I.M. Cozzarelli, M.H. Lahvis, B.A. Bekins
US Geological Survey Toxic Substances Hydrology Program: Proceedings of the technical meeting, Colorado Springs, Colorado, September 20-24, 1993
No abstract available.
Authors
D.W. Morganwalp, D. A. Aronson