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These data were collected in coordination with the U.S. Geological Survey Hydrogeophysics Branch for the National Crude Oil Spill Fate and Natural Attenuation Research Site. Water quality data were collected using an Ecomapper Autonomous Underwater Vehicle (AUV) and measured parameters include temperature, specific conductance, salinity, water density, pH, dissolved oxygen, total chlorophyll, and blue-green algae. These data are provided in two formats: a CSV file named AUV_WQ_South.csv, and in the Environmental Systems Research Institute (ESRI) shapefile format consisting of a group of files that have been compressed into a zip archive that is named AUV_WQ_South_shapefile.zip.
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In a crude-oil-contaminated sandy aquifer at the Bemidji site in northern Minnesota, biodegradation of petroleum hydrocarbons resulted in transient increases in magnetic susceptibility under high water table conditions. The magnetic susceptibility subsequently decreased again when the water table dropped. This data set was assembled to illustrate the cause of the magnetic susceptibility changes. These data show that alkalinity is high and dissolved oxygen is low in the area where the increased magnetic susceptibility is found. The decrease in the magnetic susceptibility can be attributed to the long term decline in sediment Fe(III) concentrations with time. The decrease is caused by iron reducing bacteria converting...
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In crude-oil-contaminant plumes the dissolved organic carbon (DOC) is mainly hydrocarbon degradation intermediates only partly quantified by the diesel range total petroleum hydrocarbon (TPHd) method. To understand potential biological effects of degradation intermediates we tested three fractions of DOC: (1) solid phase extract (HLB); (2) dichloromethane (DCM-total) extract used in TPHd; and (3) DCM extract with hydrocarbons isolated by silica gel cleanup (DCM-SGC). Bioactivity of extracts from five wells spanning a range of DOC was tested using an in vitro multiplex reporter system that evaluates modulation of activity of 46 transcription factors; extracts were evaluated at concentrations equivalent to the well...
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These data were collected in coordination with the U.S. Geological Survey Hydrogeophysics Branch for the National Crude Oil Spill Fate and Natural Attenuation Research Site. Data were collected while trailing the Ecomapper with an EXO2 multi-parameter sonde suspended at the water surface from a manned boat propelled by a trolling motor. An EXO 2.0 handheld controller was used for coordinate information. Data collected inlcludes barometric pressure, water temperature, specific conductance, pH, dissolved oxygen, total chlorophyll, and blue-green algae. These data are provided in two formats: a CSV file named EXO2_SWQ_South.csv, and in the Environmental Systems Research Institute (ESRI) shapefile format consisting...
In recent decades forensic fingerprinting of oil-spill hydrocarbons has emerged as an important tool for correlating oils and for evaluating their source and character. Two long-term hydrocarbon spills, an off-road diesel spill (Mandan, ND) and a crude oil spill (Bemidji, MN) experiencing methanogenic biodegradation were previously shown to be undergoing an unexpected progression of homologous n-alkane and n-alkylated cyclohexane loss. Both exhibited degradative losses proceeding from the high-molecular-weight end of the distributions, along with transitory concentration increases of lower-molecular-weight homologs. Particularly in the case of the diesel fuel spill, these methanogenic degradative patterns can result...
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These data were collected in cooperation with the U.S. Geological Survey Hydrogeophysics Branch for the National Crude Oil Spill Fate and Natural Attenuation Research Site. Water-quality data were collected using an Ecomapper Autonomous Underwater Vehicle (AUV) and measured parameters include temperature, specific conductance, salinity, water density, pH, dissolved oxygen, total chlorophyll, and blue-green algae. These data are provided in two formats: a CSV file named AUV_WQ_North.csv, and in the Environmental Systems Research Institute (ESRI) shapefile format consisting of a group of files that have been compressed into a zip archive that is named AUV_WQ_North_shapefile.zip.
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Management of petroleum-impacted waters by monitored natural attenuation (MNA) requires an understanding of the toxicology of both the original compounds released as well as the transformation products formed during natural breakdown. Here, we report data from a groundwater plume consisting of a mixture of crude oil compounds and transformation products resulting from a crude-oil release in August, 1979 near Bemidji, MN, USA. Water samples were characterized for activation of 52 human nuclear receptor (NR) activities and 50 transcriptional pathways associated with toxic responses. Five replicate analyses were performed for each solution at strengths of 1, 3, and 10 times the sample concentration. Radar plots of...
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These data were collected in coordination with the U.S. Geological Survey Hydrogeophysics Branch for the National Crude Oil Spill Fate and Natural Attenuation Research Site. Data were collected while trailing the Ecomapper with an EXO2 multi-parameter sonde suspended at the water surface from a manned boat propelled by a trolling motor. An EXO 2.0 handheld controller was used for coordinate information. Data collected includes barometric pressure, water temperature, specific conductance, pH, dissolved oxygen, total chlorophyll, and blue-green algae. These data are provided in two formats: a CSV file named EXO2_SWQ_North.csv, and in the Environmental Systems Research Institute (ESRI) shapefile format consisting of...
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These data were collected in coordination with the U.S. Geological Survey Hydrogeophysics Branch for the National Crude Oil Spill Fate and Natural Attenuation Research Site. Data were collected using an EXO2 suspended 5.5 feet below a kayak. Sensor was dragged along the bottom of the lake except in instances where water depth was greater than 5.5 ft. The continuous profiling was conducted while paddling a kayak using Hypack 2017a to navigate survey lines set on a georeferenced background map to the best of ability. An EXO 2.0 handheld controller was used for coordinate information. Data collected includes, water temperature, specific conductance, pH, dissolved oxygen, and turbidity. These data are provided in two...
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A steady-state, two-dimensional, heat transport model was created using SUTRA, version 2.2, modified to allow for spatially-variable thermal properties and density and viscosity variation with temperature. The model includes physical and hydrologic characteristics of the Bemidji Research Site, a crude-oil contaminated research site, along with previous-published parameter values for physical, chemical and biodegradation properties. Pipeline infrastructure temperatures were calibrated using a background model and measured average annual temperatures. The model was constructed to test whether temperature measurements can be used at field sites to measure microbial activity and to calculate the heat from microbial...
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This U.S. Geological Survey (USGS) Data Release is focused on the geochemistry of wells within the oil zone and groundwater monitoring wells away from the oiled zone at the National Crude Oil Spill Fate and Natural Attenuation Research Site, Bemidji MN (USA) from 1985-2015. The site located in Beltrami County is where a high-pressure pipeline carrying crude oil burst in 1979 and spilled approximately 1.7 million liters (10,700 barrels) of crude oil into glacial outwash deposits. Researchers and scientists from government agencies, academic institutions, the regulatory community, and private companies have conducted extensive investigations of groundwater geochemistry in hopes of understanding the evolution of plumes...
Tags: BTEX, Beltrami, Bemidji, Environmental Health, Geochemistry, All tags...
In recent decades forensic fingerprinting of oil-spill hydrocarbons has emerged as an important tool for correlating oils and for evaluating their source and character. Two long-term hydrocarbon spills, an off-road diesel spill (Mandan, ND) and a crude oil spill (Bemidji, MN) experiencing methanogenic biodegradation were previously shown to be undergoing an unexpected progression of homologous n-alkane and n-alkylated cyclohexane loss. Both exhibited degradative losses proceeding from the high-molecular-weight end of the distributions, along with transitory concentration increases of lower-molecular-weight homologs. Particularly in the case of the diesel fuel spill, these methanogenic degradative patterns can result...
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The U.S. Geological Survey (USGS) collected porewater samples from nine suction lysimeters in 2018, 2019, and 2021 for analysis of organic and inorganic constituents from the National Crude Oil Spill Fate and Natural Attenuation Research Site near Bemidji, MN. In August of 1979, approximately 1,700,000 L (liters), or 10,700 barrels, of crude oil spilled onto a glacial outwash aquifer. Sampled lysimeters included L310-1.5, L310-4.5, L1802-1.8, L9014-1.5, L9014-3.0, L9014-4.5, L9017-1.3, L9017-2.5, and L9017-3.7. This data release presents data on analytes that are important indicators of biodegradation processes. Some of these analytes, if present in elevated concentrations, can be a concern regarding potential effects...
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These data were collected in coordination with the U.S. Geological Survey Hydrogeophysics Branch for the National Crude Oil Spill Fate and Natural Attenuation Research Site. An EXO2 multi-parameter sonde was used to vertically characterize water quality at point locations around the perimeter of the north unnamed lake, and in area of the lake suspected to contain a hydrocarbon plume. Measurements were taken from a kayak using Hypack 2017a to navigate and set target points. Data collected includes barometric pressure, dissolved oxygen, specific conductance, turbidity, pH, and water temperature. At each location and specific depth there were typically multiple measurements made, especially in the organic sediments...
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Groundwater samples were collected in June 2018 from a background (reference) well located 200 m upgradient from the source and five wells along a flowline in the plume at 39, 68, 102, 125, and 254 m downgradient from the source. Before sampling, at least three times the water volume in the well casing was purged and field parameters (temperature, dissolved oxygen, specific conductance, and pH) were stable. Two samples from each well were collected into unpreserved 1 L amber bottles and shipped on ice overnight to a commercial lab. The two samples were extracted using dichloromethane (DCM; EPA Method 3510). One sample extract was treated with silica gel cleanup (SGC) column (USEPA method 3630C). Aliquots of the...
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This data describes the relative luminescence units (RLUs) and relative fluorescence units (RFUs) of lysates of aryl-hydrocarbon responsive chemically-activated luciferase expression human hepatoma HG2L7.5c1 cells which were exposed for 4 or 24 h to beta-naphthoflavone dilutions, 2,3,7,8-tetrachlorodibenzo-p-dioxin dilutions, or dilutions of groundwater extracts collected from wells within or near an oil-contaminated area. This data also describes RFUs of bovine serum albumin standards which were used to convert the RFUs of the cell lysates to protein with which to normalize the RLUs of the cell lysates.


map background search result map search result map Partial release of iron, alkalinity, and oxygen data from Bemidji crude oil site, Minnesota 1993-2016 USGS 1:250000-scale Quadrangle for Bemidji, MN 1958 Toxicity Data for Groundwater Contaminated by Petroleum Hydrocarbons near Bemidji, MN (2016) USGS 1:250000-scale Quadrangle for Bemidji, MN 1954 USGS 1:250000-scale Quadrangle for Bemidji, MN 1957 Dissolved organic carbon, total petroleum hydrocarbons and and toxicity assay results for Bemidji, MN (2018) (ver. 2.0, June 2023) Toxicity Assay Data for Groundwater Contaminated by Petroleum Hydrocarbons near Bemidji, MN (2018) CALUX AhR human cell bioassays treated with water extracts from wells near Bemidji, MN USA (2018) EXO2 surface-water-quality data at unnamed south lake near Bemidji, Minnesota, 2019 EXO2 surface-water-quality data at unnamed north lake near Bemidji, Minnesota, 2019 Ecomapper water-quality data at unnamed north lake near Bemidji, Minnesota, 2019 Ecomapper water-quality data at unnamed south lake near Bemidji, Minnesota, 2019 EXO2 vertical point water-quality measurements at unnamed north lake near Bemidji, Minnesota, 2019 EXO2 continuous profiling in porous organic sediments at unnamed north lake near Bemidji, Minnesota, 2019 USGS 1:250000-scale Quadrangle for Bemidji, MN 1954 Geochemistry data collected (1985-2015) for understanding the evolution of groundwater-contaminant plume chemistry emanating from legacy contaminant sources, an example from a long-term crude oil spill near Bemidji, Minnesota SUTRA model simulations used to evaluate heat flow from microbial activity at a crude oil-contaminated site. Analyses of Select Organic and Inorganic Data Collected from Lysimeters Installed at the Bemidji Crude Oil Spill Site, Minnesota, 2018, 2019, 2021 Analyses of Select Organic and Inorganic Data Collected from Lysimeters Installed at the Bemidji Crude Oil Spill Site, Minnesota, 2018, 2019, 2021 EXO2 continuous profiling in porous organic sediments at unnamed north lake near Bemidji, Minnesota, 2019 Ecomapper water-quality data at unnamed south lake near Bemidji, Minnesota, 2019 EXO2 surface-water-quality data at unnamed south lake near Bemidji, Minnesota, 2019 Toxicity Assay Data for Groundwater Contaminated by Petroleum Hydrocarbons near Bemidji, MN (2018) CALUX AhR human cell bioassays treated with water extracts from wells near Bemidji, MN USA (2018) Geochemistry data collected (1985-2015) for understanding the evolution of groundwater-contaminant plume chemistry emanating from legacy contaminant sources, an example from a long-term crude oil spill near Bemidji, Minnesota Partial release of iron, alkalinity, and oxygen data from Bemidji crude oil site, Minnesota 1993-2016 Toxicity Data for Groundwater Contaminated by Petroleum Hydrocarbons near Bemidji, MN (2016) USGS 1:250000-scale Quadrangle for Bemidji, MN 1958 USGS 1:250000-scale Quadrangle for Bemidji, MN 1954 USGS 1:250000-scale Quadrangle for Bemidji, MN 1957 USGS 1:250000-scale Quadrangle for Bemidji, MN 1954