Mark A Engle (Former Employee)
Science and Products
Filter Total Items: 64
Shallow groundwater and soil chemistry response to 3 years of subsurface drip irrigation using coalbed-methane-produced water
Disposal of produced waters, pumped to the surface as part of coalbed methane (CBM) development, is a significant environmental issue in the Wyoming portion of the Powder River Basin, USA. High sodium adsorption ratios (SAR) of the waters could degrade agricultural land, especially if directly applied to the soil surface. One method of disposing of CBM water, while deriving beneficial use, is subs
Authors
Carleton R. Bern, Adam R. Boehlke, Mark A. Engle, Nicholas J. Geboy, K.T. Schroeder, J.W. Zupancic
Low salinity hydrocarbon water disposal through deep subsurface drip irrigation: leaching of native selenium
A subsurface drip irrigation system is being used in Wyoming’s Powder River Basin that treats high sodium, low salinity, coal bed methane (CBM) produced water with sulfuric acid and injects it into cropped fields at a depth of 0.92 m. Dissolution of native gypsum releases calcium that combats soil degradation that would otherwise result from high sodium water. Native selenium is leached from soil
Authors
Carleton R. Bern, Mark A. Engle, Adam R. Boehlke, John W. Zupancic
Discharges of produced waters from oil and gas extraction via wastewater treatment plants are sources of disinfection by-products to receiving streams
Fluids co-produced with oil and gas production (produced waters) are often brines that contain elevated concentrations of bromide. Bromide is an important precursor of several toxic disinfection by-products (DBPs) and the treatment of produced water may lead to more brominated DBPs. To determine if wastewater treatment plants that accept produced waters discharge greater amounts of brominated DBPs
Authors
Michelle Hladik, Michael J. Focazio, Mark Engle
Atmospheric mercury and fine particulate matter in coastal New England: implications for mercury and trace element sources in the northeastern United States
Intensive sampling of ambient atmospheric fine particulate matter was conducted at Woods Hole, Massachusetts over a four-month period from 3 April to 29 July, 2008, in conjunction with year-long deployment of the USGS Mobile Mercury Lab. Results were obtained for trace elements in fine particulate matter concurrently with determination of ambient atmospheric mercury speciation and concentrations o
Authors
Allan Kolker, Mark A. Engle, Bernhard Peucker-Ehrenbrink, Nicholas J. Geboy, David P. Krabbenhotft, Michael H. Bothner, Michael T. Tate
Partitioning of selected trace elements in coal combustion products from two coal-burning power plants in the United States
Samples of feed coal (FC), bottom ash (BA), economizer fly ash (EFA), and fly ash (FA) were collected from power plants in the Central Appalachian basin and Colorado Plateau to determine the partitioning of As, Cr, Hg, Pb, and Se in coal combustion products (CCPs). The Appalachian plant burns a high-sulfur (about 3.9 wt.%) bituminous coal from the Upper Pennsylvanian Pittsburgh coal bed and operat
Authors
Sharon M. Swanson, Mark A. Engle, Leslie F. Ruppert, Ronald H. Affolter, Kevin B. Jones
Direct estimation of diffuse gaseous emissions from coal fires: current methods and future directions
Coal fires occur in nature spontaneously, contribute to increases in greenhouse gases, and emit atmospheric toxicants. Increasing interest in quantifying coal fire emissions has resulted in the adaptation and development of specialized approaches and adoption of numerical modeling techniques. Overview of these methods for direct estimation of diffuse gas emissions from coal fires is presented in t
Authors
Mark A. Engle, Ricardo A. Olea, Jennifer M. K. O'Keefe, James C. Hower, Nicholas J. Geboy
Whole-coal versus ash basis in coal geochemistry: a mathematical approach to consistent interpretations
Several standard methods require coal to be ashed prior to geochemical analysis. Researchers, however, are commonly interested in the compositional nature of the whole-coal, not its ash. Coal geochemical data for any given sample can, therefore, be reported in the ash basis on which it is analyzed or the whole-coal basis to which the ash basis data are back calculated. Basic univariate (mean, vari
Authors
Nicholas J. Geboy, Mark A. Engle, James C. Hower
Using simulated maps to interpret the geochemistry, formation and quality of the Blue Gem Coal Bed, Kentucky, USA
This study presents geostatistical simulations of coal-quality parameters, major oxides and trace metals for an area covering roughly 812 km2 of the Blue Gem coal bed in southeastern Kentucky, USA. The Blue Gem, characterized by low ash yield and low sulfur content, is an important economic resource. Past studies have characterized the Blue Gem's geochemistry, palynology and petrography and inferr
Authors
Nicholas J. Geboy, Ricardo A. Olea, Mark A. Engle, Jose Antonio Martin-Fernandez
Summary of inorganic compositional data for groundwater, soil-water, and surface-water samples collected at the Headgate Draw subsurface drip irrigation site, Johnson County, Wyoming
As part of a 5-year project on the impact of subsurface drip irrigation (SDI) application of coalbed-methane (CBM) produced waters, water samples were collected from the Headgate Draw SDI site in the Powder River Basin, Wyoming, USA. This research is part of a larger study to understand short- and long-term impacts on both soil and water quality from the beneficial use of CBM waters to grow forage
Authors
Nicholas J. Geboy, Mark A. Engle, Karl T. Schroeder, John W. Zupancic
Radium content of oil- and gas-field produced waters in the northern Appalachian Basin (USA): Summary and discussion of data
Radium activity data for waters co-produced with oil and gas in New York and Pennsylvania have been compiled from publicly available sources and are presented together with new data for six wells, including one time series. When available, total dissolved solids (TDS), and gross alpha and gross beta particle activities also were compiled. Data from the 1990s and earlier are from sandstone and lime
Authors
E. L. Rowan, M.A. Engle, C.S. Kirby, T. F. Kraemer
Quality assurance and quality control of geochemical data—A primer for the research scientist
Geochemistry is a constantly expanding science. More and more, scientists are employing geochemical tools to help answer questions about the Earth and earth system processes. Scientists may assume that the responsibility of examining and assessing the quality of the geochemical data they generate is not theirs but rather that of the analytical laboratories to which their samples have been submitte
Authors
Nicholas J. Geboy, Mark A. Engle
Source apportionment of atmospheric trace gases and particulate matter--Comparison of log-ratio and traditional approaches
No abstract available.
Authors
Mark A. Engle, Bernhard Peucker-Ehrenbrink, Josep M. Martín-Fernández, David P. Krabbenhoft, Paul J. Lamothe, Michael H. Bothner, Ricardo A. Olea, Allan Kolker, Michael T. Tate
By
Ecosystems Mission Area, Water Resources Mission Area, Energy Resources Program, Environmental Health Program, Toxic Substances Hydrology, Geology, Energy & Minerals Science Center, Upper Midwest Environmental Sciences Center, Upper Midwest Water Science Center, Woods Hole Coastal and Marine Science Center, Mercury Research Laboratory
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Filter Total Items: 64
Shallow groundwater and soil chemistry response to 3 years of subsurface drip irrigation using coalbed-methane-produced water
Disposal of produced waters, pumped to the surface as part of coalbed methane (CBM) development, is a significant environmental issue in the Wyoming portion of the Powder River Basin, USA. High sodium adsorption ratios (SAR) of the waters could degrade agricultural land, especially if directly applied to the soil surface. One method of disposing of CBM water, while deriving beneficial use, is subsAuthorsCarleton R. Bern, Adam R. Boehlke, Mark A. Engle, Nicholas J. Geboy, K.T. Schroeder, J.W. ZupancicLow salinity hydrocarbon water disposal through deep subsurface drip irrigation: leaching of native selenium
A subsurface drip irrigation system is being used in Wyoming’s Powder River Basin that treats high sodium, low salinity, coal bed methane (CBM) produced water with sulfuric acid and injects it into cropped fields at a depth of 0.92 m. Dissolution of native gypsum releases calcium that combats soil degradation that would otherwise result from high sodium water. Native selenium is leached from soilAuthorsCarleton R. Bern, Mark A. Engle, Adam R. Boehlke, John W. ZupancicDischarges of produced waters from oil and gas extraction via wastewater treatment plants are sources of disinfection by-products to receiving streams
Fluids co-produced with oil and gas production (produced waters) are often brines that contain elevated concentrations of bromide. Bromide is an important precursor of several toxic disinfection by-products (DBPs) and the treatment of produced water may lead to more brominated DBPs. To determine if wastewater treatment plants that accept produced waters discharge greater amounts of brominated DBPsAuthorsMichelle Hladik, Michael J. Focazio, Mark EngleAtmospheric mercury and fine particulate matter in coastal New England: implications for mercury and trace element sources in the northeastern United States
Intensive sampling of ambient atmospheric fine particulate matter was conducted at Woods Hole, Massachusetts over a four-month period from 3 April to 29 July, 2008, in conjunction with year-long deployment of the USGS Mobile Mercury Lab. Results were obtained for trace elements in fine particulate matter concurrently with determination of ambient atmospheric mercury speciation and concentrations oAuthorsAllan Kolker, Mark A. Engle, Bernhard Peucker-Ehrenbrink, Nicholas J. Geboy, David P. Krabbenhotft, Michael H. Bothner, Michael T. TatePartitioning of selected trace elements in coal combustion products from two coal-burning power plants in the United States
Samples of feed coal (FC), bottom ash (BA), economizer fly ash (EFA), and fly ash (FA) were collected from power plants in the Central Appalachian basin and Colorado Plateau to determine the partitioning of As, Cr, Hg, Pb, and Se in coal combustion products (CCPs). The Appalachian plant burns a high-sulfur (about 3.9 wt.%) bituminous coal from the Upper Pennsylvanian Pittsburgh coal bed and operatAuthorsSharon M. Swanson, Mark A. Engle, Leslie F. Ruppert, Ronald H. Affolter, Kevin B. JonesDirect estimation of diffuse gaseous emissions from coal fires: current methods and future directions
Coal fires occur in nature spontaneously, contribute to increases in greenhouse gases, and emit atmospheric toxicants. Increasing interest in quantifying coal fire emissions has resulted in the adaptation and development of specialized approaches and adoption of numerical modeling techniques. Overview of these methods for direct estimation of diffuse gas emissions from coal fires is presented in tAuthorsMark A. Engle, Ricardo A. Olea, Jennifer M. K. O'Keefe, James C. Hower, Nicholas J. GeboyWhole-coal versus ash basis in coal geochemistry: a mathematical approach to consistent interpretations
Several standard methods require coal to be ashed prior to geochemical analysis. Researchers, however, are commonly interested in the compositional nature of the whole-coal, not its ash. Coal geochemical data for any given sample can, therefore, be reported in the ash basis on which it is analyzed or the whole-coal basis to which the ash basis data are back calculated. Basic univariate (mean, variAuthorsNicholas J. Geboy, Mark A. Engle, James C. HowerUsing simulated maps to interpret the geochemistry, formation and quality of the Blue Gem Coal Bed, Kentucky, USA
This study presents geostatistical simulations of coal-quality parameters, major oxides and trace metals for an area covering roughly 812 km2 of the Blue Gem coal bed in southeastern Kentucky, USA. The Blue Gem, characterized by low ash yield and low sulfur content, is an important economic resource. Past studies have characterized the Blue Gem's geochemistry, palynology and petrography and inferrAuthorsNicholas J. Geboy, Ricardo A. Olea, Mark A. Engle, Jose Antonio Martin-FernandezSummary of inorganic compositional data for groundwater, soil-water, and surface-water samples collected at the Headgate Draw subsurface drip irrigation site, Johnson County, Wyoming
As part of a 5-year project on the impact of subsurface drip irrigation (SDI) application of coalbed-methane (CBM) produced waters, water samples were collected from the Headgate Draw SDI site in the Powder River Basin, Wyoming, USA. This research is part of a larger study to understand short- and long-term impacts on both soil and water quality from the beneficial use of CBM waters to grow forageAuthorsNicholas J. Geboy, Mark A. Engle, Karl T. Schroeder, John W. ZupancicRadium content of oil- and gas-field produced waters in the northern Appalachian Basin (USA): Summary and discussion of data
Radium activity data for waters co-produced with oil and gas in New York and Pennsylvania have been compiled from publicly available sources and are presented together with new data for six wells, including one time series. When available, total dissolved solids (TDS), and gross alpha and gross beta particle activities also were compiled. Data from the 1990s and earlier are from sandstone and limeAuthorsE. L. Rowan, M.A. Engle, C.S. Kirby, T. F. KraemerQuality assurance and quality control of geochemical data—A primer for the research scientist
Geochemistry is a constantly expanding science. More and more, scientists are employing geochemical tools to help answer questions about the Earth and earth system processes. Scientists may assume that the responsibility of examining and assessing the quality of the geochemical data they generate is not theirs but rather that of the analytical laboratories to which their samples have been submitteAuthorsNicholas J. Geboy, Mark A. EngleSource apportionment of atmospheric trace gases and particulate matter--Comparison of log-ratio and traditional approaches
No abstract available.AuthorsMark A. Engle, Bernhard Peucker-Ehrenbrink, Josep M. Martín-Fernández, David P. Krabbenhoft, Paul J. Lamothe, Michael H. Bothner, Ricardo A. Olea, Allan Kolker, Michael T. TateByEcosystems Mission Area, Water Resources Mission Area, Energy Resources Program, Environmental Health Program, Toxic Substances Hydrology, Geology, Energy & Minerals Science Center, Upper Midwest Environmental Sciences Center, Upper Midwest Water Science Center, Woods Hole Coastal and Marine Science Center, Mercury Research Laboratory