rdf-syntax-grammar
mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    title: Evaluation of sources of nitrate beneath food processing wastewater-application sites near Umatilla, Oregon
  name:
    name part: Frans, Lonna.
  name:
    name part: Paulson, Anthony.
  name:
    name part: Richerson, Phil.
  name:
    name part: Striz, Elise.
  name:
    name part: Black, Curt.
  name:
    name part: Geological Survey (U.S.)
  name:
    name part: United States
    name part: Environmental Protection Agency.
  name:
    name part: Oregon
    name part: Department of Environmental Quality.
  type of resource: text
  genre: bibliography
  origin info:
    place:
      place term: vau
    date issued: 2009
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: electronic
    form: remote
    extent: vi, 14 pages : digital, PDF file.
  abstract: Water samples from wells were collected beneath and downgradient of two food-processing wastewater-application sites near Umatilla, Oregon. These samples were analyzed for nitrate stable isotopes, nutrients, major ions, and age-dating constituents to determine if nitrate-stable isotopes can be used to differentiate food-processing waste from other potential sources of nitrate. Major-ion data from each site were used to determine which samples were associated with the recharge of the food-processing wastewater. End-member mixing analysis was used to determine the relative amounts of each identified end member within the samples collected from the Terrace Farm site. The delta nitrogen-15 of nitrate generally ranged between +2 and +9 parts per thousand and the delta oxygen*-18 of nitrate generally ranged between -2 and -7 parts per thousand. None of the samples that were determined to be associated with the wastewater were different from the samples that were not affected by the wastewater. The nitrate isotope values measured in this study are also characteristic of ammonium fertilizer, animal and human waste, and soil nitrate; therefore, it was not possible to differentiate between food-processing wastewater and the other nitrate sources. Values of delta nitrogen-15 and delta oxygen-18 of nitrate provided no more information about the sources of nitrate in the Umatilla River basin than did a hydrologic and geochemical understanding of the ground-water system derived from interpreting water-level and major-ion chemistry data.
  note: by Lonna Frans and Anthony Paulson, U.S. Geological Survey; Phil Richerson, Oregon Department of Environmental Quality; Elise Striz and Curt Black, U.S. Environmental Protection Agency.
  note: Title from PDF title screen (viewed May 28, 2009).
  note: Electronic resource.
  note: Mode of access: Internet from the USGS web site. Address as of 5/28/09: http://pubs.usgs.gov/sir/2009/5069/pdf/sir20095069.pdf ; current access available via PURL.
  note: Includes bibliographical references (pages 11-13).
  subject:
    geographic code: n-us-tx
  subject:
    topic: Groundwater flow
    geographic: Oregon
    geographic: Umatilla
  subject:
    topic: Groundwater
    topic: Nitrogen content
    geographic: Oregon
    geographic: Umatilla
  classification: I 19.42/4-4:2009-5069
  related item:
    title info:
      title: Scientific investigations report ; 2009-5069
  identifier: https://purl.fdlp.gov/GPO/LPS113149
  record info:
    record content source: EJB
    record creation date: 090422
    record change date: 20211202191725.0
    record identifier: in00002490830