Identification_Information:
  Citation:
    Citation_Information:
      Originator:
        U.S. Department of Agriculture, Natural Resources
        Conservation Service
      Publication_Date: 20180913
      Title:
        Soil Survey Geographic (SSURGO) database for
        Hill County, Montana
      Publication_Information:
        Publication_Place: Fort Worth, Texas
        Publisher:
          U.S. Department of Agriculture, Natural Resources
          Conservation Service
      Other_Citation_Details: mt041
      Online_Linkage: https://websoilsurvey.sc.egov.usda.gov/
  Description:
    Abstract:
      This data set is a digital soil survey and generally is the most
      detailed level of soil geographic data developed by the National
      Cooperative Soil Survey. The information was prepared by digitizing
      maps, by compiling information onto a planimetric correct base
      and digitizing, or by revising digitized maps using remotely
      sensed and other information.

      This data set consists of georeferenced digital map data and
      computerized attribute data. The map data are in a soil survey area
      extent format and include a detailed, field verified inventory
      of soils and miscellaneous areas that normally occur in a repeatable
      pattern on the landscape and that can be cartographically shown at
      the scale mapped. A special soil features layer (point and line
      features) is optional. This layer displays the location of features
      too small to delineate at the mapping scale, but they are large
      enough and contrasting enough to significantly influence use and
      management. The soil map units are linked to attributes in the
      National Soil Information System relational database, which gives
      the proportionate extent of the component soils and their properties.
    Purpose:
      SSURGO depicts information about the kinds and distribution of
      soils on the landscape. The soil map and data used in the SSURGO
      product were prepared by soil scientists as part of the National
      Cooperative Soil Survey.
    Supplemental_Information:
      Digital versions of hydrography, cultural features, and other
      associated layers that are not part of the SSURGO data set may be
      available from the primary organization listed in the Point of
      Contact.
  Time_Period_of_Content:
    Time_Period_Information:
      Range_of_Dates/Times:
        Beginning_Date: 19960813
        Ending_Date: 20180913
    Currentness_Reference: publication date
  Status:
    Progress: Complete
    Maintenance_and_Update_Frequency: As needed
  Spatial_Domain:
    Bounding_Coordinates:
      West_Bounding_Coordinate: -110.756
      East_Bounding_Coordinate: -109.464
      North_Bounding_Coordinate: 49.000
      South_Bounding_Coordinate: 48.133
  Keywords:
    Theme:
      Theme_Keyword_Thesaurus: None
      Theme_Keyword: soil survey
      Theme_Keyword: soils
      Theme_Keyword: Soil Survey Geographic
      Theme_Keyword: SSURGO
    Place:
      Place_Keyword_Thesaurus: USGS Geographic Names Information System (GNIS)
      Place_Keyword: Montana
      Place_Keyword: Laird Lake Quadrangle
      Place_Keyword: Goldstone Quadrangle
      Place_Keyword: Lost River Quadrangle
      Place_Keyword: Lost River NE Quadrangle
      Place_Keyword: Simpson Quadrangle
      Place_Keyword: Wild Horse Lake West Quadrangle
      Place_Keyword: Wild Horse Lake East Quadrangle
      Place_Keyword: Creedman Coulee West Quadrangle
      Place_Keyword: Creedman Coulee East Quadrangle
      Place_Keyword: Lake Thibadeau NE Quadrangle
      Place_Keyword: North Chinook Reservoir NW Quadrangle
      Place_Keyword: Goldstone SW Quadrangle
      Place_Keyword: McKinnsey Reservoir West Quadrangle
      Place_Keyword: McKinnsey Reservoir East Quadrangle
      Place_Keyword: Ninemile Coulee West Quadrangle
      Place_Keyword: Ninemile Coulee East Quadrangle
      Place_Keyword: Saint Johns Quadrangle
      Place_Keyword: Cottonwood Quadrangle
      Place_Keyword: Hilldale Colony Quadrangle
      Place_Keyword: Lake Thibadeau SW Quadrangle
      Place_Keyword: Lake Thibadeau Quadrangle
      Place_Keyword: Rudyard NW Quadrangle
      Place_Keyword: Rudyard NE Quadrangle
      Place_Keyword: Gildford NW Quadrangle
      Place_Keyword: Gildford NE Quadrangle
      Place_Keyword: Dry Lake Quadrangle
      Place_Keyword: Saddle Butte Quadrangle
      Place_Keyword: Kiehns Coulee Quadrangle
      Place_Keyword: Quigley Coulee Quadrangle
      Place_Keyword: Havre NW Quadrangle
      Place_Keyword: Havre NE Quadrangle
      Place_Keyword: Joplin Quadrangle
      Place_Keyword: Inverness Quadrangle
      Place_Keyword: Rudyard Quadrangle
      Place_Keyword: Hingham Quadrangle
      Place_Keyword: Gildford Quadrangle
      Place_Keyword: Sage Lake Quadrangle
      Place_Keyword: Kremlin Quadrangle
      Place_Keyword: Fresno Dam Quadrangle
      Place_Keyword: Herron Park Quadrangle
      Place_Keyword: Havre Quadrangle
      Place_Keyword: Havre SE Quadrangle
      Place_Keyword: Lohman Quadrangle
      Place_Keyword: Poverty Coulee NE Quadrangle
      Place_Keyword: Rocky Coulee Quadrangle
      Place_Keyword: Een School Quadrangle
      Place_Keyword: Fourteenmile Coulee NW Quadrangle
      Place_Keyword: Fourteenmile Coulee NE Quadrangle
      Place_Keyword: Box Elder NW Quadrangle
      Place_Keyword: Bailey Reservoir Quadrangle
      Place_Keyword: Laredo Quadrangle
      Place_Keyword: Laredo NE Quadrangle
      Place_Keyword: Cement Hill Quadrangle
      Place_Keyword: Shambo NE Quadrangle
      Place_Keyword: Lloyd NW Quadrangle
      Place_Keyword: Poverty Coulee SE Quadrangle
      Place_Keyword: Rocky Coulee SW Quadrangle
      Place_Keyword: Rocky Coulee SE Quadrangle
      Place_Keyword: Fourteenmile Coulee SW Quadrangle
      Place_Keyword: Fourteenmile Coulee SE Quadrangle
      Place_Keyword: Lonesome Lake Quadrangle
      Place_Keyword: Box Elder Quadrangle
      Place_Keyword: Cowan Reservoir Quadrangle
      Place_Keyword: Rocky Boy Quadrangle
      Place_Keyword: Bearpaw Lake Quadrangle
      Place_Keyword: Shambo SE Quadrangle
      Place_Keyword: Penzer School Quadrangle
      Place_Keyword: Dutch Henry Coulee Quadrangle
      Place_Keyword: Discovery Butte Quadrangle
      Place_Keyword: Centennial Mountain Quadrangle
      Place_Keyword: Bowery Peak Quadrangle
      Place_Keyword: Big John Butte Quadrangle
      Place_Keyword: Creedman Coulee East OE N
      Place_Keyword: Lake Thibadeau NE OE N
  Access_Constraints: None
  Use_Constraints:
    The U.S. Department of Agriculture, Natural Resources Conservation
    Service, should be acknowledged as the data source in products
    derived from these data.

    This data set is not designed for use as a primary regulatory tool
    in permitting or citing decisions, but may be used as a reference
    source. This is public information and may be interpreted by
    organizations, agencies, units of government, or others based on
    needs; however, they are responsible for the appropriate
    application. Federal, State, or local regulatory bodies are not to
    reassign to the Natural Resources Conservation Service any
    authority for the decisions that they make. The Natural Resources
    Conservation Service will not perform any evaluations of these maps
    for purposes related solely to State or local regulatory programs.

    Photographic or digital enlargement of these maps to scales greater
    than at which they were originally mapped can cause misinterpretation
    of the data. If enlarged, maps do not show the small areas of
    contrasting soils that could have been shown at a larger scale. The
    depicted soil boundaries, interpretations, and analysis derived from
    them do not eliminate the need for onsite sampling, testing, and
    detailed study of specific sites for intensive uses. Thus, these data
    and their interpretations are intended for planning purposes only.
    Digital data files are periodically updated. Files are dated, and
    users are responsible for obtaining the latest version of the data.
  Point_of_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U.S. Department of Agriculture, Natural Resources Conservation Service
      Contact_Position: State Soil Scientist
      Contact_Address:
        Address_Type: mailing address
        Address: Room 443
        Address: 10 East Babcock Street
        City: Bozeman
        State_or_Province: MT
        Postal_Code: 59715-4704
      Contact_Voice_Telephone: 406-587-6730
      Contact_TDD/TTY_Telephone: 800-877-8339
      Contact_Facsimile_Telephone: 406-587-6761
      Contact_Electronic_Mail_Address: alex.dado@usda.gov
Data_Quality_Information:
  Attribute_Accuracy:
    Attribute_Accuracy_Report:
      The attribute accuracy is tested by manual
      comparison of the source with hard copy plots and/or symbolized
      display of the map data on an interactive computer graphic system.
      Selected attributes that cannot be visually verified on plots or
      on screen are interactively queried and verified on screen. In
      addition, the attributes are tested against a master set of valid
      attributes. All attribute data conform to the attribute codes in
      the signed classification and correlation document and amendment(s).
  Logical_Consistency_Report:
    Certain node/geometry and topology GT- polygon/chain relationships
    are collected or generated to satisfy topological requirements
    (the GT-polygon corresponds to the soil delineation). Some of these
    requirements include: chains must begin and end at nodes, chains
    must connect to each other at nodes, chains do not extend through
    nodes, left and right GT-polygons are defined for each chain
    element and are consistent throughout, and the chains representing
    the limits of the file are free of gaps. The tests of logical
    consistency are performed using vendor software. All internal
    polygons are tested for closure with vendor software and are checked
    on hard copy plots. All data are checked for common soil lines (i.e.,
    adjacent polygons with the same label). Edge locations generally do
    not deviate from centerline to centerline by more than 0.01 inch.
    The soil survey boundary of Hill County, Montana has been edge
    matched to the soil survey boundaries of Liberty County, Blaine
    County and Part of Phillips County Area, and Chouteau County Area,
    Montana.
  Completeness_Report:
    A map unit is a collection of areas defined and named in terms of
    their soil components or miscellaneous areas or both. Each map
    unit differs in some respect from all others in a survey area and
    each map unit has a symbol that uniquely identifies the map unit
    on a soil map. Each individual area, point, or line so identified
    on the map is a delineation.

    Soil Scientists identify small areas of soils or miscellaneous areas
    that have properties and behavior significantly different than the
    named soils in the surrounding map unit. These minor components
    may be indicated as special features. If they have a minimal effect
    on use and management, or could not be precisely located, they may
    not be indicated on the map.

    A map unit has specified kinds of soils or miscellaneous areas
    (map unit components), each with a designated range in
    proportionate extent. Map units include one or more kinds of soil
    or miscellaneous area. Miscellaneous areas are areas that have little
    or no recognizable soil.

    Specific National Cooperative Soil Survey standards and procedures
    were used in the classification of soils, design and name of map
    units, and location of special soil features. These standards are
    outlined in Agricultural Handbook 18, Soil Survey Manual, 1993,
    USDA, NRCS; Agricultural Handbook 436, Soil Taxonomy, 1995,
    USDA, NRCS; and all Amendments; Keys to Soil Taxonomy,
    (current issue) USDA, NRCS; National Soil Survey
    Handbook, title 430-VI,(current issue) USDA, NRCS.

    The actual composition and interpretive purity of the map unit
    delineations were based on data collected by scientists during
    the course of preparing the soil maps. Adherence to National
    Cooperative Soil Survey standards and procedures is based on
    peer review, quality control, and quality assurance. Quality
    control is outlined in the memorandum of understanding for the
    soil survey area and in documents that reside with the Natural
    Resources Conservation Service state soil scientist. Four kinds
    of map units are used in soil surveys: consociations, complexes,
    associations, and undifferentiated groups.

    Consociations Consociations are named for the dominant soil.
    In a consociation, delineated areas use a single name from the
    dominant component in the map unit. Dissimilar components are
    minor in extent. The soil component in a consociation may be
    identified at any taxonomic level. Soil series is the lowest
    taxonomic level. A consociation that is named as a miscellaneous
    area is dominantly that kind of area and minor components do not
    significantly affect the use of the map unit. The total amount of
    dissimilar inclusions of other components in a map unit generally
    does not exceed about 15 percent if limiting and 25 percent if
    nonlimiting. A single component of a dissimilar limiting inclusion
    generally does not exceed 10 percent if very contrasting.

    Complexes and associations Complexes and associations consist
    of two or more  dissimilar components that occur in a regularly
    repeating pattern. The total amount of other dissimilar components
    is minor extent. The following arbitrary rule determines whether
    complex or association is used in the name. The major components
    of an association can be separated at the scale of mapping. In
    either case, because the major components are sufficiently different
    in morphology or behavior, the map unit cannot be called a
    consociation. In each delineation of a complex or an association,
    each major component is normally present though their proportions
    may vary appreciably from one delineation to another. The total
    amount of inclusions in a map unit that are dissimilar to any of
    the major components does not exceed 15 percent if limiting and
    25 percent if nonlimiting. A single kind of dissimilar limiting
    inclusion usually does not exceed 10 percent.

    Undifferentiated groups Undifferentiated groups consist of two
    or more components that are not consistently associated
    geographically and, therefore, do not always occur together in
    the same map delineation. These components are included in the
    same named map unit because their use and management are the same
    or very similar for common uses. Generally they are grouped together
    because some common feature, such as steepness, stoniness, or
    flooding, determines their use and management. If two or more
    additional map units would serve no useful purpose, they may be
    included in the same unit. Each delineation has at least one of the
    major components, and some may have all of them. The same principles
    regarding the proportion of minor components that apply to
    consociations also apply to undifferentiated groups. The same
    principles regarding proportion of inclusion apply to
    undifferentiated groups as to consociations.

    Minimum documentation consists of three complete soil profile
    descriptions that are collected for each soil added to the legend,
    one additional per 3,000 acres mapped; three 10 observation
    transects for each map unit, one additional 10 point transect per
    3,000 acres.

    A defined standard or level of confidence in the interpretive
    purity of the map unit delineations is attained by adjusting the
    kind and intensity of field investigations. Field investigations
    and data collection are carried out in sufficient detail to name
    map units and to identify accurately and consistently areas of
    about 5 acres.
  Positional_Accuracy:
    Horizontal_Positional_Accuracy:
      Horizontal_Positional_Accuracy_Report:
        The accuracy of these digital data is based upon their
        compilation to base maps that meet National Map
        Accuracy Standards at a scale of 1 inch equals 1,000
        feet. The difference in positional accuracy between the
        soil boundaries and special soil features locations in the
        field and their digitized map locations is unknown. The
        locational accuracy of soil delineations on the ground varies
        with the transition between map units.

        For example, on long gently sloping landscapes the transition
        occurs gradually over many feet. Where landscapes change
        abruptly from steep to level, the transition will be very
        narrow. Soil delineation boundaries and special soil features
        generally were digitized within 0.01 inch of their locations on
        the digitizing source. The digital map elements are edge matched
        between data sets. The data along each quadrangle edge are
        matched against the data for the adjacent quadrangle. Edge
        locations generally do not deviate from centerline to centerline
        by more than 0.01 inch.
  Lineage:
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator:
            U.S. Department of Agriculture,
            Agricultural Stabilization and Conservation Service
          Publication_Date: 1988
          Title: multiple 2.5 X 7.5 minute orthophotos
          Geospatial_Data_Presentation_Form: remote sensing image
          Publication_Information:
            Publication_Place: Salt Lake City, Utah
            Publisher:
              U.S. Department of Agriculture,
              Agricultural Stabilization and Conservation Service
      Source_Scale_Denominator: 24000
      Type_of_Source_Media: stable-base material
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Range_of_Dates/Times:
            Beginning_Date: 1988
            Ending_Date: 1992
        Source_Currentness_Reference: publication date
      Source_Citation_Abbreviation: ASCS1
      Source_Contribution:
        source used for field mapping and reference of
        soil delineations, map unit labels and special features
        during scan source preparation
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: U.S. Geological Survey
          Publication_Date: 1964-1988
          Title: multiple 7.5 minute topographic quadrangles
          Geospatial_Data_Presentation_Form: map
          Publication_Information:
            Publication_Place: Reston, Virginia
            Publisher: U.S. Geological Survey
      Source_Scale_Denominator: 24000
      Type_of_Source_Media: paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1995
        Source_Currentness_Reference: publication date
      Source_Citation_Abbreviation: USGS1
      Source_Contribution:
        base materials for compilation of hydrologic
        features
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator:
            U.S. Department of Agriculture,
            Natural Resources Conservation Service
          Publication_Date: unpublished material
          Title: annotated overlay
          Geospatial_Data_Presentation_Form: map
      Source_Scale_Denominator: 24000
      Type_of_Source_Media: stable-base material
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1995
        Source_Currentness_Reference: 1995
      Source_Citation_Abbreviation: NRCS1
      Source_Contribution: scan source
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Bureau of Chemistry and Soils
          Publication_Date: 1929
          Title:
            Soil Survey (Reconnaissance) of the Northern Plains
            of Montana
          Geospatial_Data_Presentation_Form: atlas
          Publication_Information:
            Publication_Place: Washington, D.C.
            Publisher: U.S. Government Printing Office
      Source_Scale_Denominator: 126720
      Type_of_Source_Media: paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1929
        Source_Currentness_Reference: publication date
      Source_Citation_Abbreviation: NRCS2
      Source_Contribution: reference of general soil delineations
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator:
            U.S. Department of Agriculture,
            Soil Conservation Service
          Publication_Date: 1969
          Title: Soil Survey of Beaver Creek Park
          Geospatial_Data_Presentation_Form: atlas
          Publication_Information:
            Publication_Place: Bozeman, Montana
            Publisher:
              U.S. Department of Agriculture,
              Soil Conservation Service
      Source_Scale_Denominator: 10380
      Type_of_Source_Media: paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1969
        Source_Currentness_Reference: publication date
      Source_Citation_Abbreviation: NRCS3
      Source_Contribution:
        information for soil map delineations and
        special feature locations
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator:
            U.S. Department of Agriculture,
            Soil Conservation Service
          Publication_Date: 1984
          Title: Soil Survey of Rocky Boy Indian Reservation
          Geospatial_Data_Presentation_Form: atlas
          Publication_Information:
            Publication_Place: Bozeman, Montana
            Publisher:
              U.S. Department of Agriculture,
              Soil Conservation Service
      Source_Scale_Denominator: 15840
      Type_of_Source_Media: paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1984
        Source_Currentness_Reference: publication date
      Source_Citation_Abbreviation: NRCS4
      Source_Contribution:
        information for soil delineations and special
        feature locations on the Rocky Boy Indian Reservation
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator:
            U.S. Department of Agriculture,
            Natural Resources Conservation Service
          Publication_Date: 1996
          Title:
            Soil Survey Geospatial (SSURGO) database for Hill County,
            Montana
          Geospatial_Data_Presentation_Form: map
          Publication_Information:
            Publication_Place: Ft. Worth, Texas
            Publisher: U.S. Department of Agriculture,
      Source_Scale_Denominator: 24000
      Type_of_Source_Media: online
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 2002
        Source_Currentness_Reference: publication date
      Source_Citation_Abbreviation: NRCS5
      Source_Contribution: SSURGO data used for revisions
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator:
            U.S. Department of Agriculture,
            Natural Resources Conservation Service
          Publication_Date: unpublished material
          Title: Revised Digital Line Graphs
          Geospatial_Data_Presentation_Form: map
      Source_Scale_Denominator: 24000
      Type_of_Source_Media: magnetic tape
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 2002
        Source_Currentness_Reference: 2001
      Source_Citation_Abbreviation: NRCS6
      Source_Contribution:
        source of digital area feature revisions of the
        Hill County, Montana soil survey
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator:
            U.S. Department of Agriculture, Natural Resources
            Conservation Service
          Publication_Date: 2002
          Title:
            National Soil Information System (NASIS) database for
            Hill County, Montana
          Geospatial_Data_Presentation_Form: tabular digital data
          Publication_Information:
            Publication_Place: Fort Collins, Colorado
            Publisher:
              U.S. Department of Agriculture, Natural Resources
              Conservation Service, Information Technology Center
      Type_of_Source_Media: online
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Range_of_Dates/Times:
            Beginning_Date: 2002
            Ending_Date: 2004
        Source_Currentness_Reference: export certification date
      Source_Citation_Abbreviation: NRCS7
      Source_Contribution:
        map unit legend used for comparison to spatial
        map unit labels
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator:
            U.S. Department of Agriculture, Natural Resources
            Conservation Service
          Publication_Date: 20020612
          Title:
            Soil Survey Geographic (SSURGO) database for
            Hill County, Montana
          Geospatial_Data_Presentation_Form: map
          Publication_Information:
            Publication_Place: Fort Collins, Colorado
            Publisher:
              U.S. Department of Agriculture,
              U.S. Department of Agriculture, Natural Resources
              Conservation Service, Information Technology Center
      Type_of_Source_Media: online
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 2004
        Source_Currentness_Reference: publication date
      Source_Citation_Abbreviation: NRCS8
      Source_Contribution: source used to apply revisions
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator:
            U.S. Department of Agriculture,
            Natural Resources Conservation Service
          Publication_Date: unpublished material
          Title: MrSID compressed image for Hill County, Montana
          Geospatial_Data_Presentation_Form: map
      Source_Scale_Denominator: 24000
      Type_of_Source_Media: CD-ROM
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 2004
        Source_Currentness_Reference: 2004
      Source_Citation_Abbreviation: NRCS9
      Source_Contribution: NAD83 ortho imagery used for quality control
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: U.S. Geological Survey
          Publication_Date: 1995-2001
          Title: multiple 7.5 minute topographic digital raster graphic (DRG)
          Geospatial_Data_Presentation_Form: map
          Publication_Information:
            Publication_Place: Ft. Worth, Texas
            Publisher:
              U.S. Department of Agriculture,
              Natural Resources Conservation Service,
              National Cartography and Geospatial Center
      Source_Scale_Denominator: 24000
      Type_of_Source_Media: online
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 2004
        Source_Currentness_Reference: publication date
      Source_Citation_Abbreviation: USGS2
      Source_Contribution: base used to digitize political boundaries
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator:
            U.S. Department of Agriculture,
            Natural Resources Conservation Service
          Publication_Date: unpublished material
          Title:
            ARC SHAPE files for the survey of Hill County,
            Montana
          Geospatial_Data_Presentation_Form: map
      Source_Scale_Denominator: 24000
      Type_of_Source_Media: CD-ROM
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 2004
        Source_Currentness_Reference: 2004
      Source_Citation_Abbreviation: NRCS10
      Source_Contribution:
        digital information containing area and special
        soil features for evaluation
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator:
            U.S. Department of Agriculture, Natural Resources
            Conservation Service
          Publication_Date: 2004
          Title:
            National Soil Information System (NASIS) database for
            Hill County, Montana
          Geospatial_Data_Presentation_Form: tabular digital data
          Publication_Information:
            Publication_Place: Fort Collins, Colorado
            Publisher:
              U.S. Department of Agriculture, Natural Resources
              Conservation Service, Information Technology Center
      Type_of_Source_Media: online
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 2004
        Source_Currentness_Reference: export certification date
      Source_Citation_Abbreviation: 2004
      Source_Contribution:
        map unit legend used for comparison to spatial
        map unit labels
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator:
            U.S. Department of Agriculture, Natural Resources
            Conservation Service
          Publication_Date: 20040525
          Title:
            Soil Survey Geographic (SSURGO) database for
            Hill County, Montana
          Geospatial_Data_Presentation_Form: map
          Publication_Information:
            Publication_Place: Fort Collins, Colorado
            Publisher:
              U.S. Department of Agriculture,
              U.S. Department of Agriculture, Natural Resources
              Conservation Service, Information Technology Center
      Type_of_Source_Media: online
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 2004
        Source_Currentness_Reference: publication date
      Source_Citation_Abbreviation: NRCS11
      Source_Contribution: source used to apply revisions
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator:
            U.S. Department of Agriculture,
            Natural Resources Conservation Service
          Publication_Date: 2004
          Title: National Soil Information System (NASIS) data base
          Geospatial_Data_Presentation_Form: tabular digital data
          Publication_Information:
            Publication_Place: Fort Collins, Colorado
            Publisher:
              U.S. Department of Agriculture,
              Natural Resources Conservation Service
      Type_of_Source_Media: database
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Range_of_Dates/Times:
            Beginning_Date: 2004
            Ending_Date: 2004
        Source_Currentness_Reference: publication date
      Source_Citation_Abbreviation: NASIS
      Source_Contribution: attribute (tabular) information
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator:
            U.S. Department of Agriculture,
            Natural Resources Conservation Service
          Publication_Date: unpublished material
          Title:
            ArcGIS geodatabase files for the soil survey of
            Hill County, Montana
          Geospatial_Data_Presentation_Form: digitized vector data
      Source_Scale_Denominator: 24000
      Type_of_Source_Media: online
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 20091208
        Source_Currentness_Reference: 2009
      Source_Citation_Abbreviation: NRCS14
      Source_Contribution:
        digital information containing area and special
        soil features for evaluation
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator:
            U.S. Department of Agriculture, Natural Resources
            Conservation Service
          Publication_Date: 2009
          Title:
            National Soil Information System (NASIS) database for
            Hill County, Montana
          Geospatial_Data_Presentation_Form: tabular digital data
          Publication_Information:
            Publication_Place: Fort Collins, Colorado
            Publisher:
              U.S. Department of Agriculture, Natural Resources
              Conservation Service, Information Technology Center
      Type_of_Source_Media: online
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 20091208
        Source_Currentness_Reference: export certification date
      Source_Citation_Abbreviation: NRCS13
      Source_Contribution:
        map unit legend used for comparison to spatial
        map unit labels
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator:
            U.S. Department of Agriculture,
            Natural Resources Conservation Service
          Publication_Date: unpublished material
          Title:
            ArcGIS geodatabase files for the soil survey of
            Hill County, Montana
          Geospatial_Data_Presentation_Form: vector digital data
      Source_Scale_Denominator: 24000
      Type_of_Source_Media: online
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 20110315
        Source_Currentness_Reference: 2011
      Source_Citation_Abbreviation: NRCS14
      Source_Contribution:
        digital information containing area and special
        soil features for evaluation
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator:
            U.S. Department of Agriculture, Natural Resources
            Conservation Service
          Publication_Date: 2011
          Title:
            National Soil Information System (NASIS) database for
            Hill County, Montana
          Geospatial_Data_Presentation_Form: tabular digital data
          Publication_Information:
            Publication_Place: Fort Collins, Colorado
            Publisher:
              U.S. Department of Agriculture, Natural Resources
              Conservation Service, Information Technology Center
      Type_of_Source_Media: online
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 20110315
        Source_Currentness_Reference: export certification date
      Source_Citation_Abbreviation: NRCS15
      Source_Contribution:
        map unit legend used for comparison to spatial
        map unit labels
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator:
            U.S. Department of Agriculture,
            Natural Resources Conservation Service
          Publication_Date: unpublished material
          Title:
            ArcGIS geodatabase files for the soil survey of
            Hill County, Montana
          Geospatial_Data_Presentation_Form: digital vector data
      Source_Scale_Denominator: 24000
      Type_of_Source_Media: online
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 2011
        Source_Currentness_Reference: 2011
      Source_Citation_Abbreviation: NRCS16
      Source_Contribution:
        digital information containing area and special
        soil features for evaluation
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator:
            U.S. Department of Agriculture, Natural Resources
            Conservation Service
          Publication_Date: 2011
          Title: National Soil Information System (NASIS) database
          Geospatial_Data_Presentation_Form: tabular digital data
          Publication_Information:
            Publication_Place: Fort Collins, Colorado
            Publisher:
              U.S. Department of Agriculture, Natural Resources
              Conservation Service, Information Technology Center
      Type_of_Source_Media: online
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 2011
        Source_Currentness_Reference: export certification date
      Source_Citation_Abbreviation: NRCS17
      Source_Contribution:
        map unit legend used for comparison to spatial
        map unit labels
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator:
            U.S. Department of Agriculture, Natural Resources
            Conservation Service
          Publication_Date: unpublished material
          Title: region 10 soils geodatabase
          Geospatial_Data_Presentation_Form: file geodatabase
      Type_of_Source_Media: vector digital data
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Range_of_Dates/Times:
            Beginning_Date: 2006
            Ending_Date: 2018
        Source_Currentness_Reference: SSURGO publication date
      Source_Citation_Abbreviation: NRCS18
      Source_Contribution: Source of digital revision - recreated yearly
    Process_Step:
      Process_Description:
        Hill County had previously published soil
        surveys named "Soil Survey (Reconnaissance) of the Northern
        Plains of Montana", 1929; "Soil Survey of Beaver Creek Park",
        1969; and "Soil Survey of Rocky Boy Indian Reservation", 1984.
        Field procedures for the second order soil survey included
        plotting of soil boundaries determined by field observation
        and by interpretation of remotely sensed data.  Boundaries were
        verified at closely spaced intervals, and the soils in each
        delineation were identified by traversing and transecting the
        landscape. Soil scientists described and sampled the soils and
        analyzed samples in the laboratory.  Major field work was
        completed in 1990.  The classification and map unit names were
        finalized at the final correlation in August 1994.
      Source_Used_Citation_Abbreviation: NRCS2, NRCS3, NRCS4, ASCS1
      Process_Date: 1994
    Process_Step:
      Process_Description:
        Multiple photographs at 1:24000 scale were
        manually compiled to 1:24000 scale 2.5 X 7.5 minute orthophotos.
        Soil scientists on staff at the Natural Resources Conservation
        Service (NRCS) state office performed quality control routines.
        Soil delineations were then transferred in ink onto Hulen
        punch-registered (5 mil) stable-base overlays.  Four control
        points of the 7.5 minute quadrangle were used during data
        collection of soil lines, mapunit labels and special soil
        features.  Soil delineations and special soil features were
        manually digitized at a resolution of at least 0.01 inch with
        GRASS 4.13. The processing, vector editing, map neatline
        development, labeling, edge matching, and quality control
        routines were done by cartographic staff located at the NRCS Soil
        Survey Office in Dillon, Montana.  The data were checked against
        the original annotated overlays, the 7.5 minute topographic
        quadrangles, and the orthophotos.  The data were adjusted to fit
        hydrography and culture features. The data were written to
        Digital Line Graph, optional (DLG-3) files with the v.export
        command. The final edit, quality control, and writing of the
        DLG-3's were performed by the cartographic technicians at the
        Montana State Office.  The NRCS, National Cartography and
        Geospatial Center, SSURGO Support Section imported the data for
        verification in ARC/INFO 7.0.4.  The data were edited.
        New DLGs reflecting those changes were written with ARC/INFO 7.0.4.
      Source_Used_Citation_Abbreviation: ASCS1, NRCS1, USGS1
      Process_Date: 1995
    Process_Step:
      Process_Description:
        The SSURGO data were imported to LT4X, Version
        4.11 by cartographic technicians on staff at the Digital Map
        Finishing Center in Bozeman, Montana.  Soil line delineations were
        smoothed. Quality control routines were performed.  New DLG-3 files
        were written with export SSURGO_area.  The data were then forwarded
        to the Montana Digitizing Unit in Bozeman, Montana for further
        quality control routines.
      Source_Used_Citation_Abbreviation: NRCS5, NRCS6
      Process_Date: 2001
    Process_Step:
      Process_Description:
        The revised area feature DLG-3 files and the
        DLG-3 SSURGO special feature files were imported to ARC/INFO,
        7.21 by certification staff at the Montana Digitizing Unit.
        ARCEDIT was used to correct dangling nodes and to remove extra
        vertices.  Minor codes were renamed to link spatial data map
        unit labels to the National Soil Information System data base.
        New DLG-3 files were written.  The data were forwarded to the
        National Cartography and Geospatial Center for archiving and
        distribution.
      Source_Used_Citation_Abbreviation: NRCS5, NRCS6
      Process_Date: 2002
    Process_Step:
      Process_Description:
        The Map Unit Interpretations Record data base
        was developed by Natural Resources Conservation Service soil
        scientists according to national standards.
      Source_Used_Citation_Abbreviation: ASCS1
      Process_Date: 1995
    Process_Step:
      Process_Description:
        The National Soil Information System data base
        was developed by Natural Resources Conservation Service soil
        scientists according to national standards.
      Source_Used_Citation_Abbreviation: ASCS1
      Process_Date: 2002
    Process_Step:
      Process_Description:
        The SSURGO survey-wide coverages and MrSID compressed imagery were
        imported to ARC 8.3 GEODATABASE by a soil scientist on staff at the
        Natural Resources Conservation Service state office in Bozeman,
        Montana. Two linear special soil features were reviewed and
        removed. Numerous pending soil scientist edits were applied.
        Topology tools were used to revise temporal areas.  Small
        water areas were considered for special spot features labeled WAT.
        The data were compared to the NASIS tabular information.  ARC
        SHAPE files were written, then forwarded to certification
        staff at the Montana Digitizing Unit for verification for SSURGO.
      Source_Used_Citation_Abbreviation: NRCS7, NRCS8, NRCS9, NRCS10, NRCS11
      Process_Date: 2004
    Process_Step:
      Process_Description:
        The ARC SHAPE files and NASIS information
        were imported to ARC/INFO, Version 8.2 by certification staff at the
        Montana Digitizing Unit.  The data were processed through evaluation
        macros dated December 2003. Boundaries were validated to adjacent soil
        survey areas. The data were forwarded to the Soil Data Warehouse for
        online distribution.
      Source_Used_Citation_Abbreviation: NRCS7, NRCS11
      Process_Date: 2004
    Process_Step:
      Process_Description:
        The SSURGO data of May 2004 and MRSID compressed imagery were
        imported to ARC 8.3 GEODATABASE by a soil scientist on staff at the
        Natural Resources Conservation Service state office in Bozeman,
        Montana. Pending soil scientist edits were applied to Sec. 1, T30N,
        R11E.  Topology tools were used to perform quality control on the
        survey. ARC SHAPE files were written and forwarded to the Montana
        Digitizing Unit for evaluation and rearchive to the soil data
        warehouse.
      Source_Used_Citation_Abbreviation: NRCS9, NRCS10, NRCS11
      Process_Date: 2004
    Process_Step:
      Process_Description:
        The ARC SHAPE files and NASIS map unit legend
        were imported to ARC/INFO, Version 8.2 by certification staff at the
        Montana Digitizing Unit.  The data were processed through evaluation
        macros dated May 2004. Boundaries were validated to adjacent soil
        survey areas. The data were forwarded to the Soil Data Warehouse
        staging server.
      Source_Used_Citation_Abbreviation: NRCS10, NASIS
      Process_Date: 2004
    Process_Step:
      Process_Description:
        The survey-wide ArcGIS geodatabase from the online SSURGO data were
        imported to ARC/INFO 9.2 by certification staff at the Montana
        Digitizing Unit. Topology errors on the boundary, that were
        flagged in prepartation for the National Soils Geospatial Database,
        were corrected as directed in the National Bulletin: 430-9-5. The
        survey was smoothed to remove excess vertices that were flagged in
        preparation for the National Soils Geospatial Database, as directed
        in the National Bulletin: 430-9-5. Evaluation macros of June 2004 were
        applied to the data. Map unit labels were compared to an approved
        map unit legend from the National Soil Information System data base.
        ARCGIS was used to join to adjacent survey boundaries and verify previous
        adjacent survey joins. The data were uploaded to the soil data
        warehouse staging server.
      Source_Used_Citation_Abbreviation: NRCS12, NRCS13
      Process_Date: 20091208
    Process_Step:
      Process_Description:
        Spatial edits occurred around the joins between MT041 and MT051.
        The primary purpose of the edits was to ensure an exact spatial
        join between the two survey areas. However, two polygons (one
        set of map units), which join spatially, could not be joined at
        the attribute level. The map units that did not join were: from
        MT051 224E Hillon-Joplin loams, 8 to 25 percent slopes; and
        from MT041 224D Hillon Joplin loams, 8 to 15 percent slopes. This
        is considered an acceptable join until the Havre SSO can evaluate
        these two map units.
        The survey-wide ArcGIS geodatabase were imported to ARC/INFO 9.2
        by certification staff at the Montana Digitizing Unit. Evaluation
        macros of July 2009 were applied to the data. Map unit labels were
        compared to an approved map unit legend from the National Soil
        Information System data base.  ARCGIS was used to join to adjacent
        survey boundaries and verify previous adjacent survey joins. The data
        were uploaded to the soil data warehouse staging server.
      Source_Used_Citation_Abbreviation: NRCS14, NRCS15
      Process_Date: 20110315
    Process_Step:
      Process_Description:
        The spatial data for Hill County, Montana soil survey
        area were downloaded from the Soil Data Mart on October 15, 2012.  The
        individual shapefiles were appended into a geodatabase for region 10.
        The data were processed in ARCGIS 10.1 using a topology object with a 0.1
        meter cluster tolerance for the purpose of eliminating gaps and overlaps
        within the region 10 soils geodatabase.  Individual soil survey area data
        were exported as shapefiles from the regional geodatabase.  A datum
        transformation from NAD83 to WGS84 using the NAD_1983_To_WGS_1984_1 datum
        transformation method was applied to the data.  The data were checked with
        the SSURGO Evaluation scripts provided by U.S. Department of Agriculture,
        Natural Resources Conservation Service. The shapefiles were uploaded to the
        soil data warehouse for archival and distribution.
      Source_Used_Citation_Abbreviation: NRCS18
      Process_Date: 2013
    Process_Step:
      Process_Description:
        The spatial data for the entire SSURGO database was recertified in October
        of 2019 to reduce storage requirements and to improve map display
        and geoprocessing performance.  The SSURGO data is internally managed
        using 12 Regional Transactional Spatial Databases (RTSD) that are in
        an ESRI File Geodatabase format.  The spatial extent of the RTSDs follow the
        Soil and Plant Science Division (SPSD) regional administrative boundaries.
        The XY coordinate system of this RTSD is USA Contiguous Albers Equal Area
        Conic USGS Version WKID: 102039 and has an XY storage precision of 0.001
        meters.  The RTSDs were recreated using a reduced storage precision of 0.1
        meters to reduce the physical size of the data.  The SSURGO data was also
        generalized by removing excess vertices, using a tolerance of 1 meter.
        The topology was validated at the CONUS level using a tolerance of 0.2
        meters.  This effort directly affects the gSSURGO and gNATSGO product since
        these deliverables are in a File Geodatabase format.
      Source_Used_Citation_Abbreviation: NRCS18
      Process_Date: 2019
Spatial_Data_Organization_Information:
  Direct_Spatial_Reference_Method: Vector
Spatial_Reference_Information:
  Horizontal_Coordinate_System_Definition:
    Geographic:
      Latitude_Resolution: 0.000001
      Longitude_Resolution: 0.0000001
      Geographic_Coordinate_Units: decimal degrees
    Geodetic_Model:
      Horizontal_Datum_Name: World Geodetic System 1984
      Ellipsoid_Name: World Geodetic System 1984
      Semi-major_Axis: 6378137.00000
      Denominator_of_Flattening_Ratio: 298.257222
Entity_and_Attribute_Information:
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: Special Soil Features
      Entity_Type_Definition:
        Special Soil Features represent soil, miscellaneous area, or landform
        features that are too small to be digitized as soil delineations
        (area features).
      Entity_Type_Definition_Source: Agricultural Handbook 18, Soil Survey Manual, 1993, USDA, SCS.
    Attribute:
      Attribute_Label: Special Soil Features Codes
      Attribute_Definition:
        Special Soil Features labels represent specific Special Soil
        Features. These features are identified with a descriptive
        label. The label is assigned to the point or line assigned
        to represent the feature on maps.
      Attribute_Definition_Source:
        Agricultural Handbook 18, Soil Survey Manual, 1993, USDA, SCS;
        National Soil Survey Handbook, Title 430-VI, part 647
        (current issue), USDA, NRCS.
      Attribute_Domain_Values:
        Codeset_Domain:
          Codeset_Name:
            Classification and Correlation of the Soils of Hill County,
            Montana
          Codeset_Source:
            U.S. Department of Agriculture, Natural Resources
            Conservation Service
  Overview_Description:
    Entity_and_Attribute_Overview:
      Map Unit Delineations are closed polygons that may be dominated
      by a single soil or miscellaneous area component plus allowable
      similar or dissimilar soils, or they can be geographic mixtures
      of groups of soils or soils and miscellaneous areas.

      The map unit symbol uniquely identifies each closed map unit
      delineation. Each symbol corresponds to a map unit name. The
      map unit key is used to link to information in the National
      Soil Information System tables.

      Map Unit Delineations are described by the National Soil
      Information System database. This attribute database gives the
      proportionate extent of the component soils and the properties for
      each soil. The database contains both estimated and measured data
      on the physical and chemical soil properties and soil
      interpretations for engineering, water management, recreation,
      agronomic, woodland, range, and wildlife uses of the soil.

      The National Soil Information System database contains static
      metadata. It documents the data structure and includes such
      information as what tables, columns, indexes, and relationships
      are defined as well as a variety of attributes of each of these
      database objects. Attributes include table and column
      descriptions and detailed domain information.

      The National Soil Information System database also contains a
      distribution metadata. It records the criteria used for selecting
      map units and components for inclusion in the set of distributed
      data.

      Special features are described in the feature table.  It includes an
      area symbol, feature label, feature name, and feature description for
      each special and ad hoc feature in the survey area.
    Entity_and_Attribute_Detail_Citation:
      Soil Taxonomy: A basic system of soil classification for making and
      interpreting soil surveys. Agricultural Handbook 436, 1999, USDA, SCS.

      Keys to Soil Taxonomy (current issue), USDA, SCS.

      National Soil Survey Handbook, Title 430-VI, part 647 (current
      issue), USDA, NRCS.

      Agricultural Handbook 18, Soil Survey Manual, 1993, USDA, SCS.
Distribution_Information:
  Distributor:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization:
          U.S. Department of Agriculture, Natural
          Resources Conservation Service, National
          Geospatial Center of Excellence
      Contact_Address:
        Address_Type: mailing and physical address
        Address: 501 West Felix Street, Building 23
        City: Fort Worth
        State_or_Province: Texas
        Postal_Code: 76115
      Contact_Voice_Telephone: 800 672 5559
      Contact_TDD/TTY_Telephone: 202 720 2600
      Contact_Facsimile_Telephone: 817 509 3469
  Resource_Description: Hill County, Montana SSURGO
  Distribution_Liability:
    Although these data have been processed successfully on a computer
    system at the U.S. Department of Agriculture, no warranty expressed
    or implied is made by the Agency regarding the utility of the data
    on any other system, nor shall the act of distribution constitute
    any such warranty. The U.S. Department of Agriculture will warrant
    the delivery of this product in computer readable format, and will
    offer appropriate adjustment of credit when the product is determined
    unreadable by correctly adjusted computer input peripherals, or
    when the physical medium is delivered in damaged condition. Request
    for adjustment of credit must be made within 90 days from the date
    of this shipment from the ordering site.

    The U.S. Department of Agriculture, nor any of its agencies are
    liable for misuse of the data, for damage, for transmission of
    viruses, or for computer contamination through the distribution of
    these data sets. The U.S. Department of Agriculture (USDA) prohibits
    discrimination in all its programs and activities on the basis of race,
    color, national origin, sex, religion, age, disability, political
    beliefs, sexual orientation, or marital or family status. (Not all
    prohibited bases apply to all programs.)
  Standard_Order_Process:
    Digital_Form:
      Digital_Transfer_Information:
        Format_Name: ESRI shapefile
        Format_Information_Content: spatial
        Transfer_Size: 54.7mb
      Digital_Transfer_Option:
        Online_Option:
          Computer_Contact_Information:
            Network_Address:
              Network_Resource_Name: URL:http://DataGateway.nrcs.usda.gov/
          Access_Instructions:
            Select desired survey area at above Internet
            Web site. An email address is required for receipt of
            instructions on retrieval via anonymous FTP. Anticipate a
            delay between submission of request at Web site and receipt of
            email message.
    Fees:
      There is currently no direct charge for requesting data or for
      retrieval via FTP.
    Ordering_Instructions:
      Visit the above mentioned Internet Web Site, select state or
      territory, then select individual soil survey area of interest.
      Spatial line data and locations of special feature symbols are in
      ESRI ArcGIS shapefile, format. The National Soil Information
      System attribute soil data are available in variable length, pipe
      delimited, ASCII file format.
    Turnaround: Typically within four hours
Metadata_Reference_Information:
  Metadata_Date: 20210924
  Metadata_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U.S. Department of Agriculture, Natural Resources Conservation Service
      Contact_Position: State Soil Scientist
      Contact_Address:
        Address_Type: mailing address
        Address: Room 443
        Address: 10 East Babcock Street
        City: Bozeman
        State_or_Province: MT
        Postal_Code: 59715-4704
      Contact_Voice_Telephone: 406-587-6730
      Contact_TDD/TTY_Telephone: 800-877-8339
      Contact_Facsimile_Telephone: 406-587-6761
      Contact_Electronic_Mail_Address: alex.dado@usda.gov
  Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata
  Metadata_Standard_Version: FGDC-STD-001-1998
