Identification_Information:
  Citation:
    Citation_Information:
      Originator:
        U.S. Department of Agriculture, Natural Resources
        Conservation Service
      Publication_Date: 20090501
      Title: Soils (PB640_Guam_a)
      Publication_Information:
        Publication_Place: Fort Worth, Texas
        Publisher:
          U.S. Department of Agriculture, Natural Resources
          Conservation Service
      Other_Citation_Details: pb640
      Online_Linkage: URL:http://SoilDataMart.nrcs.usda.gov/
      Geospatial_Data_Presentation_Form: vector digital data
  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: 20021015
        Ending_Date: 20090507
    Currentness_Reference: publication date
  Status:
    Progress: Complete
    Maintenance_and_Update_Frequency: As needed
  Spatial_Domain:
    Bounding_Coordinates:
      West_Bounding_Coordinate: 144.618069
      East_Bounding_Coordinate: 144.956955
      North_Bounding_Coordinate: 13.654421
      South_Bounding_Coordinate: 13.234019
  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: Territory of Guam
      Place_Keyword: Ritidian Point North
      Place_Keyword: Agana North
      Place_Keyword: Ritidian Point (digital)
      Place_Keyword: Pati Point
      Place_Keyword: Apra Harbor (digital)
      Place_Keyword: Agana (digital)
      Place_Keyword: Dededo (digital)
      Place_Keyword: Agat (digital)
      Place_Keyword: Talofofo (digital)
      Place_Keyword: Merizo (digital)
      Place_Keyword: Inarajan (digital)
  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: USDA - Natural Resources Conservation Service
        Address: Pacific Basin Office
        Address: FHB Building, Suite 301
        Address: 400 Route 8
        City: Maite
        State_or_Province: GU
        Postal_Code: 96927-2003
      Contact_Voice_Telephone: 671-472-7182
      Contact_TDD/TTY_Telephone: 800-877-8339
      Contact_Electronic_Mail_Address: bob.gavenda@pb.usda.gov
  Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.2.6.1500
Data_Quality_Information:
  Attribute_Accuracy:
    Attribute_Accuracy_Report:
      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.
  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 2 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, Soil Conservation Service
          Publication_Date: 1988
          Title: Soil Survey of Territory of Guam
          Geospatial_Data_Presentation_Form: atlas
          Publication_Information:
            Publication_Place: Washington, D.C.
            Publisher: U.S. Government Printing Office
      Source_Scale_Denominator: 25000
      Type_of_Source_Media: paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 2004
        Source_Currentness_Reference: publication date
      Source_Citation_Abbreviation: SCS1
      Source_Contribution:
        source of soil map unit delineations, soil
        symbols, and special soil features
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: U.S. Geological Survey
          Publication_Date: 1975
          Title: multiple orthophotographs
          Geospatial_Data_Presentation_Form: remote sensing image
          Publication_Information:
            Publication_Place: Reston, Virginia
            Publisher: U.S. Geological Survey
      Source_Scale_Denominator: 4800
      Type_of_Source_Media: stable-base material
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1997
        Source_Currentness_Reference: 1997
      Source_Citation_Abbreviation: USGS1
      Source_Contribution: compilation base
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: U.S. Geological Survey
          Publication_Date: 1967
          Title: Digital Raster Graphs
          Geospatial_Data_Presentation_Form: map
          Publication_Information:
            Publication_Place: Salt Lake City, Utah
            Publisher: U.S. Geological Survey
      Source_Scale_Denominator: 24000
      Type_of_Source_Media: digital
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 2000
        Source_Currentness_Reference: 2000
      Source_Citation_Abbreviation: USGS2
      Source_Contribution: base map used for verification of digital plots
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator:
            U.S. Department of Agriculture,
            Natural Resources Conservation Service
          Publication_Date: unpublished material
          Title: annotated stable-base overlays
          Geospatial_Data_Presentation_Form: map
      Source_Scale_Denominator: 4800
      Type_of_Source_Media: stable-base material
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 2002
        Source_Currentness_Reference: 2002
      Source_Citation_Abbreviation: NRCS1
      Source_Contribution: source material for scanning
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator:
            U.S. Department of Agriculture,
            Natural Resources Conservation Service
          Publication_Date: 2002
          Title: Soil Survey Geographic (SSURGO) database for Territory of Guam
          Geospatial_Data_Presentation_Form: vector digital data
          Publication_Information:
            Publication_Place: Fort 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: 2002
        Source_Currentness_Reference: publication date
      Source_Citation_Abbreviation: NRCS2
      Source_Contribution: SSURGO data used in reevaluation of data
    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: 2006
        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: 2004
          Title: Soil Survey Geographic (SSURGO) database for Territory of Guam
          Geospatial_Data_Presentation_Form: vector digital data
          Publication_Information:
            Publication_Place: Fort 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: NRCS3
      Source_Contribution: SSURGO data used in re-projection
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator:
            U.S. Department of Agriculture,
            Natural Resources Conservation Service
          Publication_Date: 2006
          Title: Orthophoto Mosaic for Guam
          Geospatial_Data_Presentation_Form: remote sensing image
      Source_Scale_Denominator: 12000
      Type_of_Source_Media: online
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Range_of_Dates/Times:
            Beginning_Date: 20050521
            Ending_Date: 20060331
        Source_Currentness_Reference: ground condition
      Source_Citation_Abbreviation: NRCS4
      Source_Contribution: photographic base map for field mapping
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator:
            U.S. Department of Agriculture,
            Natural Resources Conservation Service
          Publication_Date: unpublished material
          Title: Guam shapefiles
          Geospatial_Data_Presentation_Form: vector digital data
      Source_Scale_Denominator: 12000
      Type_of_Source_Media: CD-ROM
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 2009
        Source_Currentness_Reference: date of completion
      Source_Citation_Abbreviation: NRCS5
      Source_Contribution: re-projected soil survey
    Process_Step:
      Process_Description:
        The Territory of Guam Soil Survey was published
        in 1983 at 1:25000 scale. The classification and map unit names
        were finalized at the final correlation in 1985.  An evaluation was
        made of the soil survey and it was determined that the soil map
        unit delineations required additional detail and modification.  One
        additional map unit was added to the soil survey.  The changes were
        made to reflect present day soil survey concepts, soil classification,
        and soil interpretations. Amendments to the correlation document
        reflecting these changes are on file at the NRCS MLRA (MO) Soil Survey
        Regional Office in Davis, California. The additional map unit is as
        follows:

        56-----Water
      Source_Used_Citation_Abbreviation: SCS1
      Process_Date: 1997
    Process_Step:
      Process_Description:
        The soil survey data was manually compiled from 1:25000 scale soil
        survey maps to 1:4,800 scale orthophographs during the soil map unit
        compilation process. Soil map unit delineations and special soil
        features were manually transferred from the orthophographs
        (4800 scale) to annotated stable-base overlays to be used as a
        scanning source.
      Source_Used_Citation_Abbreviation: SCS1, USGS1, NRCS1
      Process_Date: 1997
    Process_Step:
      Process_Description:
        The annotated overlays were raster scanned on a IDEAL FSS 5000 Scanner
        at a resolution of 300 dpi.  The soil area features and special soil
        features were processed in LT4X Version 4.11.  The soil processing
        consisted of raster editing, map neat line development, labeling, edge
        matching and vector conversion.  The soil area features and special
        soil features were written to Digital Line Graph Optional format in
        LT4X.  Digitizing and quality control were done by the geographic
        information system specialist and cartographic technicians at the
        Temple Texas Digitizing and Certification Center.
      Source_Used_Citation_Abbreviation: NRCS1
      Process_Date: 1999
    Process_Step:
      Process_Description:
        The soil area features and special soil features DLGs were imported
        into ARC/INFO 7.2.1.  The quadrangles for each coverage were merged
        together into a soil survey area and additional editing was performed.
        The digital data was plotted on DRGs, at a scale of 1:24000, to allow
        NRCS soil scientists to verify and edit the soil survey data.  These
        edits were then incorporated into the digital data and new DLGs
        reflecting these changes were written utilizing ARC/INFO 7.2.1.
      Source_Used_Citation_Abbreviation: USGS1, USGS2, NRCS1
      Process_Date: 2000
    Process_Step:
      Process_Description:
        The DLG-3 Optional format files (24000 scale) were evaluated with the
        October 1998 ARC/INFO SSURGO Evaluation AMLs provided by the U.S.
        Department of Agriculture (USDA), Natural Resources Conservation
        Service (NRCS), National Cartography and Geospatial Center (NCGC),
        Fort Worth, Texas.  Upon successful completion of the SSURGO
        Evaluation, the DLGs were processed with the October 1998 archiving
        AMLs provided by the NCGC staff.
      Source_Used_Citation_Abbreviation: NRCS1
      Process_Date: 2002
    Process_Step:
      Process_Description:
        The Map Unit Record data base was developed by the NRCS soil
        scientists according to national standards.
      Source_Used_Citation_Abbreviation: SCS1, NRCS1
      Process_Date: 2001
    Process_Step:
      Process_Description:
        The online SSURGO data has been rearchived due
        to changes in the tabular structure. The online SSURGO data were
        imported to ARC/INFO Version 7.2.1 at the Temple, Texas Digitizing
        and Certification Center of the Natural Resources Conservation Service.
        The soil survey area coverages and special soil feature coverages were
        processed with the December 2003 Certification AMLs provided by the
        National Cartography and Geospatial Center, Fort Worth, Texas.  The
        certified spatial data were then electronically transferred to the
        NRCS staging server for archival in the Soil Data Warehouse.
      Source_Used_Citation_Abbreviation: NRCS2
      Process_Date: 2004
    Process_Step:
      Process_Description:
        The National Soil Information System database was developed by NRCS
        soil scientists according to national standards and specifications.
      Source_Used_Citation_Abbreviation: SCS1
      Process_Date: 2004
    Process_Step:
      Process_Description:
        The Natural Resources Conservation Service State Soil Scientist or
        delegate, upon completion of data quality verification, determined
        that the tabular data should be released for official use. A
        selected set of map units and components in the soil survey legend was
        copied to a staging database, and rating values for selected
        interpretations were generated. The list of selected interpretations is
        stored in the database table named sainterp.
      Source_Used_Citation_Abbreviation: NASIS
      Process_Date: 20041123
    Process_Step:
      Process_Description:
        The Natural Resources Conservation Service State Soil Scientist or
        delegate verified that the labels on the digitized soil map units
        link to map units in the tabular database, and certified the joined
        data sets for release to the Soil Data Warehouse. A system assigned
        version number and date stamp were added and the data were copied to
        the data warehouse. The tabular data for the map units and components
        were extracted from the data warehouse and reformatted into the soil
        data delivery data model, then stored in the Soil Data Mart.
        The spatial data were copied to the Soil Data Mart without change.
      Source_Used_Citation_Abbreviation: NASIS
      Process_Date: 20041123
    Process_Step:
      Process_Description:
        The Natural Resources Conservation Service State Soil Scientist or
        delegate, upon completion of data quality verification, determined
        that the tabular data should be released for official use. A
        selected set of map units and components in the soil survey legend was
        copied to a staging database, and rating values for selected
        interpretations were generated. The list of selected interpretations is
        stored in the database table named sainterp.
      Source_Used_Citation_Abbreviation: NASIS
      Process_Date: 20060112
    Process_Step:
      Process_Description:
        The Natural Resources Conservation Service State Soil Scientist or
        delegate verified that the labels on the digitized soil map units
        link to map units in the tabular database, and certified the joined
        data sets for release to the Soil Data Warehouse. A system assigned
        version number and date stamp were added and the data were copied to
        the data warehouse. The tabular data for the map units and components
        were extracted from the data warehouse and reformatted into the soil
        data delivery data model, then stored in the Soil Data Mart.
        The spatial data were copied to the Soil Data Mart without change.
      Source_Used_Citation_Abbreviation: NASIS
      Process_Date: 20060112
    Process_Step:
      Process_Description:
        The Natural Resources Conservation Service State Soil Scientist or
        delegate, upon completion of data quality verification, determined
        that the tabular data should be released for official use. A
        selected set of map units and components in the soil survey legend was
        copied to a staging database, and rating values for selected
        interpretations were generated. The list of selected interpretations is
        stored in the database table named sainterp.
      Source_Used_Citation_Abbreviation: NASIS
      Process_Date: 20060718
    Process_Step:
      Process_Description:
        The Natural Resources Conservation Service State Soil Scientist or
        delegate verified that the labels on the digitized soil map units
        link to map units in the tabular database, and certified the joined
        data sets for release to the Soil Data Warehouse. A system assigned
        version number and date stamp were added and the data were copied to
        the data warehouse. The tabular data for the map units and components
        were extracted from the data warehouse and reformatted into the soil
        data delivery data model, then stored in the Soil Data Mart.
        The spatial data were copied to the Soil Data Mart without change.
      Source_Used_Citation_Abbreviation: NASIS
      Process_Date: 20060719
    Process_Step:
      Process_Description:
        The Natural Resources Conservation Service State Soil Scientist or
        delegate, upon completion of data quality verification, determined
        that the tabular data should be released for official use. A
        selected set of map units and components in the soil survey legend was
        copied to a staging database, and rating values for selected
        interpretations were generated. The list of selected interpretations is
        stored in the database table named sainterp.
      Source_Used_Citation_Abbreviation: NASIS
      Process_Date: 20060920
    Process_Step:
      Process_Description:
        The Natural Resources Conservation Service State Soil Scientist or
        delegate verified that the labels on the digitized soil map units
        link to map units in the tabular database, and certified the joined
        data sets for release to the Soil Data Warehouse. A system assigned
        version number and date stamp were added and the data were copied to
        the data warehouse. The tabular data for the map units and components
        were extracted from the data warehouse and reformatted into the soil
        data delivery data model, then stored in the Soil Data Mart.
        The spatial data were copied to the Soil Data Mart without change.
      Source_Used_Citation_Abbreviation: NASIS
      Process_Date: 20060921
    Process_Step:
      Process_Description:
        The Natural Resources Conservation Service State Soil Scientist or
        delegate, upon completion of data quality verification, determined
        that the tabular data should be released for official use. A
        selected set of map units and components in the soil survey legend was
        copied to a staging database, and rating values for selected
        interpretations were generated. The list of selected interpretations is
        stored in the database table named sainterp.
      Source_Used_Citation_Abbreviation: NASIS
      Process_Date: 20061229
    Process_Step:
      Process_Description:
        The Natural Resources Conservation Service State Soil Scientist or
        delegate verified that the labels on the digitized soil map units
        link to map units in the tabular database, and certified the joined
        data sets for release to the Soil Data Warehouse. A system assigned
        version number and date stamp were added and the data were copied to
        the data warehouse. The tabular data for the map units and components
        were extracted from the data warehouse and reformatted into the soil
        data delivery data model, then stored in the Soil Data Mart.
        The spatial data were copied to the Soil Data Mart without change.
      Source_Used_Citation_Abbreviation: NASIS
      Process_Date: 20061229
    Process_Step:
      Process_Description:
        The Natural Resources Conservation Service State Soil Scientist or
        delegate verified that the labels on the digitized soil map units
        link to map units in the tabular database, and certified the joined
        data sets for release to the Soil Data Warehouse. A system assigned
        version number and date stamp were added and the data were copied to
        the data warehouse. The tabular data for the map units and components
        were extracted from the data warehouse and reformatted into the soil
        data delivery data model, then stored in the Soil Data Mart.
        The spatial data were copied to the Soil Data Mart without change.
      Source_Used_Citation_Abbreviation: NASIS
      Process_Date: 20081201
    Process_Step:
      Process_Description:
        The Guam Soil Survey was re-projected to match the digital
        orthophotographs.  The soilmu_a_pb640.shp file was downloaded from
        the Soil Data Mart (SDM) by the GIS staff at the Pacific Islands Area
        State Office in Honolulu, Hawaii.  The digitized soil survey was
        re-projected from Geographic to UTM and the NAD83 datum was
        transformed to WGS84 using the ARCGIS Version 9.2 software.
        1) Using project in ArcToolbox created soilmu_a_pb640_n27.shp by
        selecting geographic NAD27.prj, and NAD_1927_To_NAD_1983_NADCON
        transformation method
        2) Used Define Projection in ArcToolbox to change the projection info
        of soilmu_a_pb640_n27.shp to GCS_Guam_1963 by clicking on guam
        1963.prj, found under Geographic Coordinate Systems, Oceans.
        3) Input soilmu_a_pb640_n27.shp (at this point it is geographic,
        Guam 1963 datum) into Project in ArcToolbox to create
        soilmu_a_pb640_n83Harn.shp by selecting Geographic Coordinate Systems,
        North America, North American 1983 HARN.prj, (shows as
        GCS_North_American_1983_HARN under Output Coordinate System) using
        Guam_1963_To_HARN_Guam transformation method.
        4) Input soilmu_a_pb640_n83Harn.shp in Project to create
        soilmu_a_pb640_utmwgs84.shp by selecting Projected Coordinate Systems,
        UTM, WGS 1984, WGS 1984 UTM Zone 55 N.prj, selecting the first
        transformation method in the list: NAD_1983_HARN_To_WGS_1984
        The GIS staff sent the shapefiles for Guam to the Michigan Digitizing
        Unit (MIDU) staff.
      Source_Used_Citation_Abbreviation: NRCS3, NRCS4, NRCS5
      Process_Date: 2009
      Process_Contact:
        Contact_Information:
          Contact_Person_Primary:
            Contact_Person: Patricia Shade
            Contact_Organization: NRCS
          Contact_Position: GIS Specialist
          Contact_Address:
            Address_Type: mailing and physical address
            Address: 300 Ala Moana Blvd., Rm. 4-118
            City: Honolulu
            State_or_Province: Hawaii
            Postal_Code: 96813
            Country: USA
          Contact_Voice_Telephone: 808 541-2600 x120
          Contact_Facsimile_Telephone: 808 541-1335
          Contact_Electronic_Mail_Address: patricia.shade@hi.usda.gov
    Process_Step:
      Process_Description:
        The staff at the National Cartography and Geospatial Center (NCGC)
        in Fort Worth, Texas, revised the software that was used to check
        the soil survey coverage.  The SSURGO (Soil SURvey GeOgraphic)
        Database ARC Macro Language (AML) programs were modified to allow
        archiving of projects in the Pacific Basin with the WGS84 datum and
        spheriod.  The revised AMLs were sent to the MIDU staff in East
        Lansing, Michigan.  The MIDU staff processed the digitized soil
        survey with these November 2008 SSURGO Certification AML programs.
        Upon successful completion of the SSURGO Evaluation, a dataset archive
        was created.
        The archive included:
        -Spatial data: Geodatabase, coverages and shapefile
        -Tabular data: SSURGO download dated 12/29/2006
        -Metadata
        The archive was written to a CD and mailed to the soils staff at
        the Pacific Islands Area State Office.
      Source_Used_Citation_Abbreviation: NRCS5, NASIS
      Process_Date: 20090507
    Process_Step:
      Process_Contact:
        Contact_Information:
          Contact_Organization_Primary:
            Contact_Organization: Guam Coastal Management Program, Bureau of Statistics and Plans
            Contact_Person: Maria Kottermair
          Contact_Position: GIS Support for GCMP, University of Guam (WERI)
          Contact_Voice_Telephone: 671-472-4201-3
          Contact_Electronic_Mail_Address: mariakottermair@uguamlive.uog.edu
      Process_Description: Joined  table with table "mapunit" from the soil geodatabase called "pb640_Guam_Jan2010" based on the musym field. Exporedt joined table to new shapefile. Deleted all new fields from mapunit except "muname". Added new fields "Mapunit" and "Slope". Populated fields by extracting information from muname. Added geometry.
      Process_Date: 2012
Spatial_Data_Organization_Information:
  Direct_Spatial_Reference_Method: Vector
  Point_and_Vector_Object_Information:
Spatial_Reference_Information:
  Horizontal_Coordinate_System_Definition:
    Geodetic_Model:
      Horizontal_Datum_Name: D_WGS_1984
      Ellipsoid_Name: WGS_1984
      Semi-major_Axis: 6378137.000000
      Denominator_of_Flattening_Ratio: 298.257224
    Planar:
      Planar_Coordinate_Information:
        Planar_Distance_Units: meters
Entity_and_Attribute_Information:
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: soils
      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: OBJECTID
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: Esri
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated.
    Attribute:
      Attribute_Label: Shape
      Attribute_Definition: Feature geometry.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Coordinates defining the features.
    Attribute:
      Attribute_Label: PB640_A_
    Attribute:
      Attribute_Label: PB640_A_ID
    Attribute:
      Attribute_Label: MUSYM
    Attribute:
      Attribute_Label: MUKEY
    Attribute:
      Attribute_Label: AREASYMBOL
    Attribute:
      Attribute_Label: muname
    Attribute:
      Attribute_Label: Area_ha
    Attribute:
      Attribute_Label: MapUnit
    Attribute:
      Attribute_Label: Area_m2
    Attribute:
      Attribute_Label: Slope
    Attribute:
      Attribute_Label: Area_ac
    Attribute:
      Attribute_Label: Area_mi
    Attribute:
      Attribute_Label: Perimtr_km
    Attribute:
      Attribute_Label: Perimtr_mi
    Attribute:
      Attribute_Label: Shape_Length
      Attribute_Definition: Length of feature in internal units.
      Attribute_Definition_Source: Esri
      Attribute_Domain_Values:
        Unrepresentable_Domain: Positive real numbers that are automatically generated.
    Attribute:
      Attribute_Label: Shape_Area
      Attribute_Definition: Area of feature in internal units squared.
      Attribute_Definition_Source: Esri
      Attribute_Domain_Values:
        Unrepresentable_Domain: Positive real numbers that are automatically generated.
  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
          Cartography and Geospatial Center
      Contact_Address:
        Address_Type: mailing and physical address
        Address: 501 West Felix Street, Building 23, P.O. Box 6567
        City: Fort Worth
        State_or_Province: Texas
        Postal_Code: 76115
      Contact_Voice_Telephone: 800 672 5559
      Contact_Facsimile_Telephone: 817 509 3469
  Resource_Description: Territory of Guam 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: ARC/INFO coverage
        Format_Information_Content: spatial
        Transfer_Size: 3.3
      Digital_Transfer_Option:
        Offline_Option:
          Offline_Media: CD-ROM
          Recording_Format: ISO 9660 Level 2
    Digital_Form:
      Digital_Transfer_Information:
        Format_Name: ArcView shapefile
        Format_Information_Content: spatial
        Transfer_Size: 4.6
      Digital_Transfer_Option:
        Offline_Option:
          Offline_Media: CD-ROM
          Recording_Format: ISO 9660 Level 2
    Digital_Form:
      Digital_Transfer_Information:
        Format_Name: ASCII
        Format_Information_Content: keys and attributes
        Transfer_Size: 11.7
      Digital_Transfer_Option:
        Online_Option:
          Computer_Contact_Information:
            Network_Address:
              Network_Resource_Name: URL:http://SoilDataMart.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 (ArcView,ArcInfo) shapefile, coverage and interchange
      (i.e., export) formats.
      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: 20100325
  Metadata_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization:
          U.S. Department of Agriculture,
          Natural Resources Conservation Service
        Contact_Person: REQUIRED: The person responsible for the metadata information.
      Contact_Position: State Soil Scientist
      Contact_Address:
        Address_Type: mailing address
        Address: USDA - Natural Resources Conservation Service
        Address: Pacific Basin Office
        Address: FHB Building, Suite 301
        Address: 400 Route 8
        City: Maite
        State_or_Province: GU
        Postal_Code: 96927-2003
      Contact_Voice_Telephone: 671-472-7182
      Contact_TDD/TTY_Telephone: 800-877-8339
      Contact_Electronic_Mail_Address: bob.gavenda@pb.usda.gov
  Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
  Metadata_Standard_Version: FGDC-STD-001-1998
  Metadata_Time_Convention: local time
  Metadata_Review_Date: 20131010
Lineage:
