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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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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 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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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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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...
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 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 set describes dissolved concentrations in groundwater of nonvolatile dissolved organic carbon (NVDOC), total petroleum hydrocarbons (TPH) in the gasoline (C6-C10), diesel range (C10-C28) with and without silica gel cleanup, and oil range (>C28-C40) with and without silica gel cleanup. Groundwater samples were collected in June 2018 from the USGS crude oil study site located near Bemidji, MN. 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.
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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.
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The National Crude Oil Spill Fate and Natural Attenuation Research Site is located near Bemidji, MN, USA. A high pressure oil pipeline ruptured in 1979 releasing ~1.7 million liters of light crude oil, which sprayed over an area of ~6500 square meters and collected in topographic depressions. Approximately 75% of the spilled oil was recovered. Much of the remainder reached the water table, where it is distributed into three residual oil bodies (the north, middle, and south oil pools). Groundwater flows east-northeast toward a small lake roughly 300 m downgradient from the original spill site. Secondary reactions of sediments with byproducts from anaerobic degradation of the oil plumes cause increases in total dissolved...


    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 1954 USGS 1:250000-scale Quadrangle for Bemidji, MN 1958 Toxicity Data for Groundwater Contaminated by Petroleum Hydrocarbons near Bemidji, MN (2016) Geophysical data from the unnamed lake at the National Crude Oil Spill Fate and Natural Attenuation Research Site, Bemidji, MN (ver. 2.0, June 2020) USGS 1:250000-scale Quadrangle for Bemidji, MN 1954 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) Nonvolatile dissolved organic carbon (NVDOC), total petroleum hydrocarbons at the USGS crude oil study site near Bemidji, Minnesota, USA (2018) 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 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) Geophysical data from the unnamed lake at the National Crude Oil Spill Fate and Natural Attenuation Research Site, Bemidji, MN (ver. 2.0, June 2020) 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 1954 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 1954 USGS 1:250000-scale Quadrangle for Bemidji, MN 1957