Laura M. Bexfield (Former Employee)
Science and Products
Filter Total Items: 15
Datasets from Groundwater-Quality Data from the National Water-Quality Assessment Project, January through December 2014 and Select Quality-Control Data from May 2012 through December 2014
Groundwater-quality data were collected from 559 wells as part of the National Water-Quality Assessment Project of the U.S. Geological Survey National Water-Quality Program from January through December 2014. The data were collected from four types of well networks: principal aquifer study networks, which assess the quality of groundwater used for public water supply; land-use study...
Replicate surface water and groundwater data analyzed by USGS National Water Quality Laboratory schedule 2437, 2013-15
Replicate water-quality samples are collected and prepared in the field and analyzed in the laboratory in identical ways so that they are considered to be the same in composition and analysis (Mueller and others, 2015). This data set includes one table of duplicate National Water-Quality Assessment Project (NAWQA) surface water and groundwater samples collected between October 1, 2012...
Groundwater Quality Data from the National Water Quality Assessment Project, May 2012 through December 2013
Groundwater-quality data were collected from 748 wells as part of the National Water-Quality Assessment Project of the U.S. Geological Survey National Water-Quality Program from May 2012 through December 2013. The data were collected from four types of well networks: principal aquifer study networks, which assess the quality of groundwater used for public water supply; land-use study...
Filter Total Items: 45
Groundwater-quality and select quality-control data from the National Water-Quality Assessment Project, January through December 2015, and previously unpublished data from 2013 to 2014
Groundwater-quality data were collected from 502 wells as part of the National Water-Quality Assessment Project of the U.S. Geological Survey National Water-Quality Program and are included in this report. Most of the wells (500) were sampled from January through December 2015, and 2 of them were sampled in 2013. The data were collected from five types of well networks: principal aquifer...
Authors
Terri L. Arnold, Laura M. Bexfield, MaryLynn Musgrove, Paul E. Stackelberg, Bruce Lindsey, James A. Kingsbury, Justin T. Kulongoski, Kenneth Belitz
Data analysis considerations for pesticides determined by National Water Quality Laboratory schedule 2437
In 2013, the U.S. Geological Survey National Water Quality Laboratory (NWQL) made a new method available for the analysis of pesticides in filtered water samples: laboratory schedule 2437. Schedule 2437 is an improvement on previous analytical methods because it determines the concentrations of 225 fungicides, herbicides, insecticides, and associated degradates in one method at similar...
Authors
Megan E. Shoda, Lisa H. Nowell, Wesley W. Stone, Mark W. Sandstrom, Laura M. Bexfield
Groundwater quality in the Rio Grande aquifer system, southwestern United States
Groundwater provides nearly 50 percent of the Nation’s drinking water. To help protect this vital resource, the U.S. Geological Survey (USGS) National Water-Quality Assessment (NAWQA) Project assesses groundwater quality in aquifers that are important sources of drinking water (Burow and Belitz, 2014). The Rio Grande aquifer system constitutes one of the important areas being evaluated.
Authors
MaryLynn Musgrove, Laura M. Bexfield
Groundwater-quality data from the National Water-Quality Assessment Project, January through December 2014 and select quality-control data from May 2012 through December 2014
Groundwater-quality data were collected from 559 wells as part of the National Water-Quality Assessment Project of the U.S. Geological Survey National Water-Quality Program from January through December 2014. The data were collected from four types of well networks: principal aquifer study networks, which are used to assess the quality of groundwater used for public water supply; land...
Authors
Terri L. Arnold, Laura M. Bexfield, MaryLynn Musgrove, Bruce Lindsey, Paul E. Stackelberg, Jeannie R. B. Barlow, Leslie A. DeSimone, Justin T. Kulongoski, James A. Kingsbury, Joseph D. Ayotte, Brandon Fleming, Kenneth Belitz
Groundwater quality data from the National Water-Quality Assessment Project, May 2012 through December 2013
Groundwater-quality data were collected from 748 wells as part of the National Water-Quality Assessment Project of the U.S. Geological Survey National Water-Quality Program from May 2012 through December 2013. The data were collected from four types of well networks: principal aquifer study networks, which assess the quality of groundwater used for public water supply; land-use study...
Authors
Terri L. Arnold, Leslie A. DeSimone, Laura M. Bexfield, Bruce Lindsey, Jeannie R. B. Barlow, Justin T. Kulongoski, MaryLynn Musgrove, James A. Kingsbury, Kenneth Belitz
Global patterns and environmental controls of perchlorate and nitrate co-occurrence in arid and semi-arid environments
Natural perchlorate (ClO4−) is of increasing interest due to its wide-spread occurrence on Earth and Mars, yet little information exists on the relative abundance of ClO4− compared to other major anions, its stability, or long-term variations in production that may impact the observed distributions. Our objectives were to evaluate the occurrence and fate of ClO4− in groundwater and soils...
Authors
W. H. Jackson, J.K. Böhlke, Brian J. Andraski, Lynne S. Fahlquist, Laura M. Bexfield, Frank D. Eckardt, John B. Gates, Alfonso F. Davila, Christopher P. McKay, Balaji Rao, Ritesh Sevanthi, Srinath Rajagopalan, Nubia Luz Estrada, Neil C. Sturchio, Paul B. Hatzinger, Todd M. Anderson, Greta J. Orris, Julio L. Betancourt, David A. Stonestrom, Claudio L. Latorre, Yanhe Li, Gregory J. Harvey
Science and Products
Filter Total Items: 15
Datasets from Groundwater-Quality Data from the National Water-Quality Assessment Project, January through December 2014 and Select Quality-Control Data from May 2012 through December 2014
Groundwater-quality data were collected from 559 wells as part of the National Water-Quality Assessment Project of the U.S. Geological Survey National Water-Quality Program from January through December 2014. The data were collected from four types of well networks: principal aquifer study networks, which assess the quality of groundwater used for public water supply; land-use study...
Replicate surface water and groundwater data analyzed by USGS National Water Quality Laboratory schedule 2437, 2013-15
Replicate water-quality samples are collected and prepared in the field and analyzed in the laboratory in identical ways so that they are considered to be the same in composition and analysis (Mueller and others, 2015). This data set includes one table of duplicate National Water-Quality Assessment Project (NAWQA) surface water and groundwater samples collected between October 1, 2012...
Groundwater Quality Data from the National Water Quality Assessment Project, May 2012 through December 2013
Groundwater-quality data were collected from 748 wells as part of the National Water-Quality Assessment Project of the U.S. Geological Survey National Water-Quality Program from May 2012 through December 2013. The data were collected from four types of well networks: principal aquifer study networks, which assess the quality of groundwater used for public water supply; land-use study...
Filter Total Items: 45
Groundwater-quality and select quality-control data from the National Water-Quality Assessment Project, January through December 2015, and previously unpublished data from 2013 to 2014
Groundwater-quality data were collected from 502 wells as part of the National Water-Quality Assessment Project of the U.S. Geological Survey National Water-Quality Program and are included in this report. Most of the wells (500) were sampled from January through December 2015, and 2 of them were sampled in 2013. The data were collected from five types of well networks: principal aquifer...
Authors
Terri L. Arnold, Laura M. Bexfield, MaryLynn Musgrove, Paul E. Stackelberg, Bruce Lindsey, James A. Kingsbury, Justin T. Kulongoski, Kenneth Belitz
Data analysis considerations for pesticides determined by National Water Quality Laboratory schedule 2437
In 2013, the U.S. Geological Survey National Water Quality Laboratory (NWQL) made a new method available for the analysis of pesticides in filtered water samples: laboratory schedule 2437. Schedule 2437 is an improvement on previous analytical methods because it determines the concentrations of 225 fungicides, herbicides, insecticides, and associated degradates in one method at similar...
Authors
Megan E. Shoda, Lisa H. Nowell, Wesley W. Stone, Mark W. Sandstrom, Laura M. Bexfield
Groundwater quality in the Rio Grande aquifer system, southwestern United States
Groundwater provides nearly 50 percent of the Nation’s drinking water. To help protect this vital resource, the U.S. Geological Survey (USGS) National Water-Quality Assessment (NAWQA) Project assesses groundwater quality in aquifers that are important sources of drinking water (Burow and Belitz, 2014). The Rio Grande aquifer system constitutes one of the important areas being evaluated.
Authors
MaryLynn Musgrove, Laura M. Bexfield
Groundwater-quality data from the National Water-Quality Assessment Project, January through December 2014 and select quality-control data from May 2012 through December 2014
Groundwater-quality data were collected from 559 wells as part of the National Water-Quality Assessment Project of the U.S. Geological Survey National Water-Quality Program from January through December 2014. The data were collected from four types of well networks: principal aquifer study networks, which are used to assess the quality of groundwater used for public water supply; land...
Authors
Terri L. Arnold, Laura M. Bexfield, MaryLynn Musgrove, Bruce Lindsey, Paul E. Stackelberg, Jeannie R. B. Barlow, Leslie A. DeSimone, Justin T. Kulongoski, James A. Kingsbury, Joseph D. Ayotte, Brandon Fleming, Kenneth Belitz
Groundwater quality data from the National Water-Quality Assessment Project, May 2012 through December 2013
Groundwater-quality data were collected from 748 wells as part of the National Water-Quality Assessment Project of the U.S. Geological Survey National Water-Quality Program from May 2012 through December 2013. The data were collected from four types of well networks: principal aquifer study networks, which assess the quality of groundwater used for public water supply; land-use study...
Authors
Terri L. Arnold, Leslie A. DeSimone, Laura M. Bexfield, Bruce Lindsey, Jeannie R. B. Barlow, Justin T. Kulongoski, MaryLynn Musgrove, James A. Kingsbury, Kenneth Belitz
Global patterns and environmental controls of perchlorate and nitrate co-occurrence in arid and semi-arid environments
Natural perchlorate (ClO4−) is of increasing interest due to its wide-spread occurrence on Earth and Mars, yet little information exists on the relative abundance of ClO4− compared to other major anions, its stability, or long-term variations in production that may impact the observed distributions. Our objectives were to evaluate the occurrence and fate of ClO4− in groundwater and soils...
Authors
W. H. Jackson, J.K. Böhlke, Brian J. Andraski, Lynne S. Fahlquist, Laura M. Bexfield, Frank D. Eckardt, John B. Gates, Alfonso F. Davila, Christopher P. McKay, Balaji Rao, Ritesh Sevanthi, Srinath Rajagopalan, Nubia Luz Estrada, Neil C. Sturchio, Paul B. Hatzinger, Todd M. Anderson, Greta J. Orris, Julio L. Betancourt, David A. Stonestrom, Claudio L. Latorre, Yanhe Li, Gregory J. Harvey