Barbara J Mahler (Former Employee)
Science and Products
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Response to comment on “PAH concentrations in lake sediment decline following ban on coal-tar-based pavement sealants in Austin, Texas”
No abstract available.
Authors
Peter C. Van Metre, Barbara Mahler
Concentrations of polycyclic aromatic hydrocarbons (PAHs) and azaarenes in runoff from coal-tar- and asphalt-sealcoated pavement
Coal-tar-based sealcoat, used extensively on parking lots and driveways in North America, is a potent source of PAHs. We investigated how concentrations and assemblages of PAHs and azaarenes in runoff from pavement newly sealed with coal-tar-based (CT) or asphalt-based (AS) sealcoat changed over time. Samples of simulated runoff were collected from pavement 5 h to 111 d following application of AS
Authors
Barbara Mahler, Peter C. Van Metre, William T. Foreman
PAH concentrations in lake sediment decline following ban on coal-tar-based pavement sealants in Austin, Texas
Recent studies have concluded that coal-tar-based pavement sealants are a major source of polycyclic aromatic hydrocarbons (PAHs) in urban settings in large parts of the United States. In 2006, Austin, TX, became the first jurisdiction in the U.S. to ban the use of coal-tar sealants. We evaluated the effect of Austin’s ban by analyzing PAHs in sediment cores and bottom-sediment samples collected i
Authors
Peter C. Van Metre, Barbara Mahler
Response to comment on "Cancer risk from incidental ingestion exposures to PAHs associated with coal-tar-sealed pavement"
No abstract available.
Authors
E. Spencer William, Barbara Mahler, Peter C. Van Metre
The quality of our Nation's waters: Water quality in the Denver Basin aquifer system, Colorado, 2003-05
Availability and sustainability of groundwater in the Denver Basin aquifer system depend on water quantity and water quality. The Denver Basin aquifer system underlies about 7,000 square miles of the Great Plains in eastern Colorado and is the primary or sole source of water for domestic and public supply in many areas of the basin. Use of groundwater from the Denver Basin sandstone aquifers has b
Authors
Nancy J. Bauch, MaryLynn Musgrove, Barbara Mahler, Suzanne S. Paschke
Dissolved oxygen fluctuations in karst spring flow and implications for endemic species: Barton Springs, Edwards aquifer, Texas, USA
Karst aquifers and springs provide the dissolved oxygen critical for survival of endemic stygophiles worldwide, but little is known about fluctuations of dissolved oxygen concentrations (DO) and factors that control those concentrations. We investigated temporal variation in DO at Barton Springs, Austin, Texas, USA. During 2006–2012, DO fluctuated by as much as a factor of 2, and at some periods d
Authors
Barbara Mahler, Renan Bourgeais
Historical records, sources, and spatial trends of PCBs along the Rhône River (France).
Despite bans on PCB use since 1975 (open systems) and 1987 (closed systems), concentrations of PCBs in riverine fish in France continue to exceed regulatory levels. We present historical records of PCB concentrations in sediment cores from eight sites on the Rhône River, from Lake Geneva to the Mediterranean Sea. Maximum PCB concentrations (sum of seven indicator PCBs) increase downstream, from 11
Authors
Brice Mourier, Marc Desmet, Peter C. Van Metre, Barbara Mahler, Yves Perrodin, Gwenaelle Roux, Jean-Phillippe Bedell, Lynn W. Lefebvre, Marc Babut
You're standing on it! Coal-tar-based pavement sealcoat and environmental and human health
Coal-tar-based sealcoat—a product marketed to protect and beautify asphalt pavement—is a potent source of polycyclic aromatic hydrocarbons (PAHs) to air, soils, streams and lakes, and homes. Does its use present a risk to human health?
Results from a new study by researchers from Baylor University and the USGS indicate that living adjacent to a coal-tar-sealed pavement is associated with significa
Authors
Barbara Mahler, Peter C. Van Metre
Prediction, time variance, and classification of hydraulic response to recharge in two karst aquifers
Many karst aquifers are rapidly filled and depleted and therefore are likely to be susceptible to changes in short-term climate variability. Here we explore methods that could be applied to model site-specific hydraulic responses, with the intent of simulating these responses to different climate scenarios from high-resolution climate models. We compare hydraulic responses (spring flow, groundwate
Authors
Andrew J. Long, Barbara Mahler
Cancer risk from incidental ingestion exposures to PAHs associated with coal-tar-sealed pavement
Recent (2009–10) studies documented significantly higher concentrations of polycyclic aromatic hydrocarbons (PAHs) in settled house dust in living spaces and soil adjacent to parking lots sealed with coal-tar-based products. To date, no studies have examined the potential human health effects of PAHs from these products in dust and soil. Here we present the results of an analysis of potential canc
Authors
E. Spencer Williams, Barbara Mahler, Peter C. Van Metre
Changes in sources and storage in a karst aquifer during a transition from drought to wet conditions
Understanding the sources and processes that control groundwater compositions and the timing and magnitude of groundwater vulnerability to potential surface-water contamination under varying meteorologic conditions is critical to informing groundwater protection policies and practices. This is especially true in karst terrains, where infiltrating surface water can rapidly affect groundwater qualit
Authors
C.I. Wong, B.J. Mahler, M. Musgrove, J.L. Banner
Spatial and temporal trends in PCBs in sediment along the lower Rhone River, France
Despite increasingly strict control of polychlorinated biphenyl (PCB) releases in France since the mid-1970s, PCB contamination of fish recently has emerged as a major concern in the lower Rhone River basin. We measured PCB concentrations in Rhone sediment to evaluate the effects of PCB releases from major urban and industrial areas, sediment redistribution by large floods, and regulatory controls
Authors
Marc Desmet, Brice Mourier, Barbara Mahler, Peter C. Van Metre, Gwenaelle Roux, Henri Persat, Irene Lefevre, Annie Peretti, Emmanuel Chapron, Simonneau Anaelle, Cecile Miege, Marc Babut
Science and Products
Filter Total Items: 13
No Result Found
Filter Total Items: 24
No results found.
Filter Total Items: 106
Response to comment on “PAH concentrations in lake sediment decline following ban on coal-tar-based pavement sealants in Austin, Texas”
No abstract available.
Authors
Peter C. Van Metre, Barbara Mahler
Concentrations of polycyclic aromatic hydrocarbons (PAHs) and azaarenes in runoff from coal-tar- and asphalt-sealcoated pavement
Coal-tar-based sealcoat, used extensively on parking lots and driveways in North America, is a potent source of PAHs. We investigated how concentrations and assemblages of PAHs and azaarenes in runoff from pavement newly sealed with coal-tar-based (CT) or asphalt-based (AS) sealcoat changed over time. Samples of simulated runoff were collected from pavement 5 h to 111 d following application of AS
Authors
Barbara Mahler, Peter C. Van Metre, William T. Foreman
PAH concentrations in lake sediment decline following ban on coal-tar-based pavement sealants in Austin, Texas
Recent studies have concluded that coal-tar-based pavement sealants are a major source of polycyclic aromatic hydrocarbons (PAHs) in urban settings in large parts of the United States. In 2006, Austin, TX, became the first jurisdiction in the U.S. to ban the use of coal-tar sealants. We evaluated the effect of Austin’s ban by analyzing PAHs in sediment cores and bottom-sediment samples collected i
Authors
Peter C. Van Metre, Barbara Mahler
Response to comment on "Cancer risk from incidental ingestion exposures to PAHs associated with coal-tar-sealed pavement"
No abstract available.
Authors
E. Spencer William, Barbara Mahler, Peter C. Van Metre
The quality of our Nation's waters: Water quality in the Denver Basin aquifer system, Colorado, 2003-05
Availability and sustainability of groundwater in the Denver Basin aquifer system depend on water quantity and water quality. The Denver Basin aquifer system underlies about 7,000 square miles of the Great Plains in eastern Colorado and is the primary or sole source of water for domestic and public supply in many areas of the basin. Use of groundwater from the Denver Basin sandstone aquifers has b
Authors
Nancy J. Bauch, MaryLynn Musgrove, Barbara Mahler, Suzanne S. Paschke
Dissolved oxygen fluctuations in karst spring flow and implications for endemic species: Barton Springs, Edwards aquifer, Texas, USA
Karst aquifers and springs provide the dissolved oxygen critical for survival of endemic stygophiles worldwide, but little is known about fluctuations of dissolved oxygen concentrations (DO) and factors that control those concentrations. We investigated temporal variation in DO at Barton Springs, Austin, Texas, USA. During 2006–2012, DO fluctuated by as much as a factor of 2, and at some periods d
Authors
Barbara Mahler, Renan Bourgeais
Historical records, sources, and spatial trends of PCBs along the Rhône River (France).
Despite bans on PCB use since 1975 (open systems) and 1987 (closed systems), concentrations of PCBs in riverine fish in France continue to exceed regulatory levels. We present historical records of PCB concentrations in sediment cores from eight sites on the Rhône River, from Lake Geneva to the Mediterranean Sea. Maximum PCB concentrations (sum of seven indicator PCBs) increase downstream, from 11
Authors
Brice Mourier, Marc Desmet, Peter C. Van Metre, Barbara Mahler, Yves Perrodin, Gwenaelle Roux, Jean-Phillippe Bedell, Lynn W. Lefebvre, Marc Babut
You're standing on it! Coal-tar-based pavement sealcoat and environmental and human health
Coal-tar-based sealcoat—a product marketed to protect and beautify asphalt pavement—is a potent source of polycyclic aromatic hydrocarbons (PAHs) to air, soils, streams and lakes, and homes. Does its use present a risk to human health?
Results from a new study by researchers from Baylor University and the USGS indicate that living adjacent to a coal-tar-sealed pavement is associated with significa
Authors
Barbara Mahler, Peter C. Van Metre
Prediction, time variance, and classification of hydraulic response to recharge in two karst aquifers
Many karst aquifers are rapidly filled and depleted and therefore are likely to be susceptible to changes in short-term climate variability. Here we explore methods that could be applied to model site-specific hydraulic responses, with the intent of simulating these responses to different climate scenarios from high-resolution climate models. We compare hydraulic responses (spring flow, groundwate
Authors
Andrew J. Long, Barbara Mahler
Cancer risk from incidental ingestion exposures to PAHs associated with coal-tar-sealed pavement
Recent (2009–10) studies documented significantly higher concentrations of polycyclic aromatic hydrocarbons (PAHs) in settled house dust in living spaces and soil adjacent to parking lots sealed with coal-tar-based products. To date, no studies have examined the potential human health effects of PAHs from these products in dust and soil. Here we present the results of an analysis of potential canc
Authors
E. Spencer Williams, Barbara Mahler, Peter C. Van Metre
Changes in sources and storage in a karst aquifer during a transition from drought to wet conditions
Understanding the sources and processes that control groundwater compositions and the timing and magnitude of groundwater vulnerability to potential surface-water contamination under varying meteorologic conditions is critical to informing groundwater protection policies and practices. This is especially true in karst terrains, where infiltrating surface water can rapidly affect groundwater qualit
Authors
C.I. Wong, B.J. Mahler, M. Musgrove, J.L. Banner
Spatial and temporal trends in PCBs in sediment along the lower Rhone River, France
Despite increasingly strict control of polychlorinated biphenyl (PCB) releases in France since the mid-1970s, PCB contamination of fish recently has emerged as a major concern in the lower Rhone River basin. We measured PCB concentrations in Rhone sediment to evaluate the effects of PCB releases from major urban and industrial areas, sediment redistribution by large floods, and regulatory controls
Authors
Marc Desmet, Brice Mourier, Barbara Mahler, Peter C. Van Metre, Gwenaelle Roux, Henri Persat, Irene Lefevre, Annie Peretti, Emmanuel Chapron, Simonneau Anaelle, Cecile Miege, Marc Babut