Nonvolatile dissolved organic carbon and diesel range organics concentrations measured in 2016 at the USGS crude oil study site near Bemidji, Minnesota, USA
Dates
Publication Date
2018-01-02
Citation
Bekins, B.A. and Cozzarelli, I.M., 2017, Nonvolatile dissolved organic carbon and diesel range organics concentrations measured in 2016 at the USGS crude oil study site near Bemidji, Minnesota, USA: U. S. Geological Survey data release, https://doi.org/10.5066/F7CN733T.
Summary
The Bemidji crude oil spill site is a long-term USGS study site to understand the fate of crude oil in the shallow subsurface. A description of the site can be found at https://mn.water.usgs.gov/projects/bemidji. In 2014 concentrations of non-volatile dissolved organic carbon (NVDOC) were three times higher than diesel range organics (DRO) in the contaminant plume*. This is important because most of the NVDOC in the plume is composed of partial transformation products of compounds from the crude oil that are not reflected in a DRO analysis. In 2016 we conducted a campaign to determine if DRO values continue to reflect only a fraction of the NVDOC. These data are the results of that campaign. A total of 25 wells were sampled for DRO [...]
Summary
The Bemidji crude oil spill site is a long-term USGS study site to understand the fate of crude oil in the shallow subsurface. A description of the site can be found at https://mn.water.usgs.gov/projects/bemidji. In 2014 concentrations of non-volatile dissolved organic carbon (NVDOC) were three times higher than diesel range organics (DRO) in the contaminant plume*. This is important because most of the NVDOC in the plume is composed of partial transformation products of compounds from the crude oil that are not reflected in a DRO analysis. In 2016 we conducted a campaign to determine if DRO values continue to reflect only a fraction of the NVDOC. These data are the results of that campaign. A total of 25 wells were sampled for DRO and NVDOC in August, 2016. Three wells with long term records were included in the sampling: 530B, 515B, and 9316D. Wells sampled in 2016 but not in 2014 include two wells located 14 m from a down gradient lake (1217B and 1217C) and one well in the zone sprayed by oil (956).
*Earlier measurements referenced here can be found in: Bekins, B. A., Cozzarelli, I. M., Erickson, M. L., Steenson, R. A., and Thorn, K. A., 2016, Crude Oil Metabolites in Groundwater at Two Spill Sites: Groundwater, v. 54, no. 5, p. 681-691
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Related External Resources
Type: Related Primary Publication
Podgorski, D. C.; Zito, P.; McGuire, J. T.; Martinovic-Weigelt, D.; Cozzarelli, I. M.; Bekins, B. A.; Spencer, R. G. M., Examining Natural Attenuation and Acute Toxicity of Petroleum-Derived Dissolved Organic Matter with Optical Spectroscopy. Environmental Science & Technology 2018, 52, 6157-6166. DOI: 10.1021/acs.est.8b00016
Podgorski, D. C.; Zito, P.; McGuire, J. T.; Martinovic-Weigelt, D.; Cozzarelli, I. M.; Bekins, B. A.; Spencer, R. G. M., Rebuttal to Comment on “Examining Natural Attenuation and Acute Toxicity of Petroleum-Derived Dissolved Organic Matter with Optical Spectroscopy”. Environmental Science & Technology 2018. DOI: 10.1021/acs.est.8b04976
These data were collected to compare concentrations of nonvolatile dissolved organic carbon (NVDOC) to diesel range organics (DRO) in the same wells. The data are being released for use in public guidance documents.
Communities
National Crude Oil Spill Fate and Natural Attenuation Research Site
