Identification_Information:

  Citation:
    Citation_Information:
      Originator: Bookstom,A.A.
      Originator: Box,S.E.
      Originator: Campbell,J.K.
      Originator: Foster,K.I.
      Originator: Jackson,B.L.
      Publication_Date: 2001
      Title:
        Pb-Rich Sediment, Coeur d'Alene River Valley, Idaho: Volume,
        Tonnage, and Pb Content.
      Edition: 1.0
      Geospatial_Data_Presentation_Form: Map        
      Publication_Information:
        Publication_Place: Menlo Park, CA
        Publisher: U. S. Geological Survey
      Other_Citation_Details:
      Online_Linkage: URL = http://geopubs.wr.usgs.gov/open-file/of01-140
  Description:
    Abstract: 
      This metadata file (pbsamthk.met) describes two dBase4 tables.
      One table (alsamPb.dbf) contains UTM coordinates for 998 
      surface-sediment geochemical sample sites, and concentration of 
      lead, in parts per million (ppm Pb), in each sample. The other table 
      (thkpb11.dbf) contains UTM coordinates for 428 point locations, 
      thickness (in centimeters) of Pb-rich sediment, and thickness-
      interval weighted-average lead concentration in each stratigraphic
      section of Pb-rich sediment. 

      These data were compiled from ten different studies referenced herein,
      in which different methods were used to digest and chemically 
      analyze samples. Total analytical uncertainty (including uncertainty
      in estimation of area, density, and Pb concentration) is estimated
      at 25% or less. Median based estimates are preferred over mean based
      estimates, which are unduly influenced by very high values for
      thickness and lead concentration of Pb-rich sediment.

    Purpose:  
      This data set was prepared as part of an effort to portray the 
      distribution, character, quantity, and Pb content of Pb-rich sediment 
      in the Coeur d' Alene (CdA) River valley. This is basic information 
      needed to estimate the extent of environmental damage, and evaluate 
      alternative strategies for environmental remediation and restoration.

    Supplemental_Information:
      This Metadata (Pbsamthk.met) describes two dBase4 tables (alsamPb.dbf 
      and thkpb11.dbf)used in a ArcView GIS. The alsamPb.dbf table 
      was imported as an Event Theme to display locations of geochemical
      sample sites, and the concentration of lead (Pb) at each of those 
      sites in parts per million (ppm). The thkpb11.dbf table was imported 
      as an Event Theme to display location of sites where the thickness
      of lead-rich sediments was measured or estimated. These two 
      dBase4 tables were compiled in MS Excel from many sets of 
      source materials, and were documented in this single Metadata file. 
      Included with these two tables are two AVL's (alsamPb.avl and 
      thkpb11.avl) that are used to format the ArcView legend. 

      Metadata file cdafldpl.met describes three other shape files used
      (cdasurf4_utm.shp, fldpln2.shp, and fpaream2.shp). 
               
      Metadata file pbrchseg.met describes three additional shape files 
      used (segments.shp, rivreach.shp, and Pb1000.shp). 

  Data_Set_Part:
    Part_Type: dBase file
    Part_Name: alsamPb.dbf
   Part_Description: This dBase file contains 998 point locations 
     and attributes for geochemical sample sites (including ppm Pb)
     in surface sediments of the Coeur d'Alene river channel and its
     floodplain. 

  Data_Set_Part:
    Part_Type: dBase file
    Part_Name: thkpb11.dbf
   Part_Description: This dBase4 file contains 428 point locations, 
     inluding attributes of sites where thickness (cm) of Pb-rich sediment
     has been determined or estimated. Thickness-weighted average lead
     concentration (ppm Pb) of the stratigraphic section of Pb-rich sediment
     also is included for many of these sites. 
          
  Time_Period_of_Content:
    Time_Period_Information:
          Range_Of_Date/Times:
            Beginning_Date: 1988
            Ending_Date: 2001
    Currentness_Reference: Publication Date
  Status:
    Progress: Complete
    Maintenance_and_Update_Frequency: None planned
  Spatial_Domain:
    Bounding_Coordinates:
      West_Bounding_Coordinate: -116.8752
      East_Bounding_Coordinate: -116.2484
      North_Bounding_Coordinate: 47.6166
      South_Bounding_Coordinate: 47.4178
  Keywords:
    Theme:
      Theme_Keyword_Thesaurus: None
      Theme_Keyword: Surficial geology
      Theme_Keyword: Lead
      Theme_Keyword: Mining
      Theme_Keyword: Tailings
      Theme_Keyword: Sediment
    Place:
      Place_Keyword_Thesaurus: None
      Place_Keyword: Idaho
      Place_Keyword: Coeur d'Alene River
      Place_Keyword: Kootenai County
      Place_Keyword: Shoshone County
      Place_Keyword: Pacific Northwest
      Place_Keyword: USA
  Access_Constraints: None
  Use_Constraints:
      Any hardcopies utilizing these data sets shall clearly indicate
      their source. If the users have modified the data in any way they
      are obligated to describe the type of modifications they have
      performed. User specifically agrees not to misrepresent these
      data sets, nor to imply that changes they made were approved by
      the U.S. Geological Survey.
    
  Point_of_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U.S. Geological Survey
        Contact_Person: Arthur A. Bookstrom
      Contact_Position: Geologist
      Contact_Address:
        Address_Type: mailing and physical address
        Address: 904 W. Riverside Ave. Rm. 202
        City: Spokane
        State_or_Province: Washington
        Postal_Code: 99201
        Country: USA
      Contact_Voice_Telephone: 1-509-368-3119
      Contact_Facsimile_Telephone: 1-509-368-3199
      Contact_Electronic_Mail_Address: abookstrom@usgs.gov
      Hours_of_Service: 8 - 5 M-F
  Data_Set_Credit:
    Dr. Mohammed Ikramuddin, of Eastern Washington University, 
    provided most of the chemical analyses collected by USGS-GD. 
    USGS-WRD, USFWS, USEPA, and the University of Idaho also provided 
    major sets of data included here. Eastern Washington University 
    student, Scott Prevatte, calculated depth-weighted average Pb 
    concentrations from depth-interval data, and helped prepare 
    ArcView GIS files. John Wallis wrote the metadata, Gary Raines 
    reviewed the digital files and the Metadata.
  Native_Data_Set_Environment:
    MS Excel 2000 for Windows 98 and dBase4 for Windows environment.

Data_Quality_Information:
  Attribute_Accuracy:
    Attribute_Accuracy_Report: 
      Attribute accuracy was verified by manual comparison of the source
      data with hardcopy printouts, x-y plots and on screen
      evaluations. 
  Logical_Consistency_Report: 
      Point data are given in Universal Transverse Mercator (UTM), Zone 11,
	North American Datum 1927 (NAD27).
  Positional_Accuracy:
    Horizontal_Positional_Accuracy:
      Horizontal_Positional_Accuracy_Report:
      Sample sites generally +/- 10 to 100 meters. Locations of sample sites 
      were identified and recorded by different methods in different studies
      (table 1). Methodologies used to determine sample site locations are
      discussed in the Process_Step section of this Metadata (pbsamthk.met).
 
    Vertical_Positional_Accuracy:
      Vertical_Positional_Accuracy_Report: 
       No vertical data
  Lineage:
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator:  Bender,S.F.
          Publication_Date: 1991, Unpublished M.S. thesis University of Idaho 
          Publication_Time:
          Title:
            Investigation of the chemical composition and distribution of 
            mining wastes in Killarney Lake, Coeur d'Alene area, northern 
            Idaho.
          Edition:
          Geospatial_Data_Presentation_Form: paper maps
      Source_Scale_Denominator: 1:25,000
      Type_of_Source_Media: map
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Range_Of_Date/Times:
            Beginning_Date: 1988
            Ending_Date: 1991
      Source_Citation_Abbreviation: Bender (1991)
      Source_Contribution:
        Sample points were transferred from page-sized illustrations to
        1:24,000-scale topographic base map. Coordinates were measured from
        1:24,000-scale base map. Tabular data on the concentration of lead 
        in surface sediment were entered into table alsamPb.dbf. Tabular 
        data on the thickness of Pb-rich sediment, and its thickness-interval
        weighted-average concentration of lead were entered into table
        thkpb11.dbf. See Process_Step for sample-site location methodologies.


      Source_Citation:
        Citation_Information:
          Originator:  Rabbi,F.
          Publication_Date: 1994, Unpublished Ph.D. dissertation University 
          of Idaho.
          Title:
            Trace element geochemistry of bottom sediments and waters
            from the lateral lakes of Coeur d'Alene River,Kootenai County,
            north Idaho
          Geospatial_Data_Presentation_Form: paper maps
      Source_Scale_Denominator: 1:11,000 to 1:15,625
      Type_of_Source_Media:  maps
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Range_Of_Date/Times:
            Beginning_Date: 1991
            Ending_Date: 1994
      Source_Citation_Abbreviation: Rabbi (1994)
      Source_Contribution:
        Sample points plotted on page sized illustrations in this thesis
        were transferred to a 1:24,000-scale topographic base map.
        Coordinates were measured from 1:24,000-scale base map. Tabular data
        on the concentration of lead in surface sediment were entered into 
        table alsamPb.dbf. Tabular data on the thickness of Pb-rich sediment, 
        and its thickness-interval weighted-average concentration of lead 
        were entered into table thkpb11.dbf. See Process_Step for 
        sample-site location methodologies.


      Source_Citation:
        Citation_Information:
          Originator: Hoffman,M.L.
          Publication_Date: 1995, Unpublished M.S. thesis University of Idaho 
          Title:
            Characterization of heavy metal contamination in two lateral 
            lakes of the lower Coeur d'Alene River valley, northern Idaho.
          Geospatial_Data_Presentation_Form: paper maps
      Source_Scale_Denominator: 1:17,860
      Type_of_Source_Media: map
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Range_Of_Date/Times:
            Beginning_Date: 1992
            Ending_Date: 1995
      Source_Citation_Abbreviation: Hoffman (1995)
      Source_Contribution:     
        Sample points plotted on page sized illustrations in this thesis
        report were transferred to a 1:24,000-scale topographic base map.
        Coordinates were measured from 1:24,000-scale base map. Tabular data
        on the concentration of lead in surface sediment were entered into 
        table alsamPb.dbf. Tabular data on the thickness of Pb-rich sediment, 
        and its thickness-interval weighted-average concentration of lead 
        were entered into table thkpb11.dbf. See Process_Step for  
        sample-site location methodologies.


      Source_Citation:
        Citation_Information:
          Originator: LeJeune,K.C.
          Originator: Cacela,D.
          Originator: Lipton,J.
          Originator: Cors,C.
          Publication_Date: 1995
          Title:
            Riparian resources injury assessment; Data report: Boulder 
            Colorado, Hagler Bailly Consulting, Inc. (now Stratus Consulting,
            Inc.) for The Natural Resource Trustees (comprised of 
            represenatives of the Coeur d'Alene Tribes, U.S. Department of 
            Agriculture, and U.S. Department of Interior).
          Geospatial_Data_Presentation_Form: paper maps
      Source_Scale_Denominator: 1:24,000 and others
      Type_of_Source_Media: commercial GPS receiver(with differential 
            correction)
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1995
      Source_Citation_Abbreviation: LeJeune and others (1995)
      Source_Contribution:
        Locations were identified by GPS, using a commercial GPS receiver,
        with differential correction. Digital tables of location and
        geochemical data were obtained by electronic transfer from the Coeur 
        d'Alene Tribal GIS group. Tabular data were used to compile the 
        alsamPb.dbf table, which contains the Pb geochemical data and surface
        sample locations for this report. See Process_Step for sample site
        location methodologies.

      Source_Citation:
        Citation_Information:
          Originator: Fousek,R.S.
          Publication_Date: 1996, Unpublished M.S. thesis Auburn University,
          Alabama  
          Title:
            Trace-element distributions in the sediments of the flood 
            plain and river banks of the South Fork and Coeur d'Alene
            Rivers, Shoshone and Kootenai Counties, Idaho
          Geospatial_Data_Presentation_Form: paper maps and tables
      Source_Scale_Denominator: 1:250,000
      Type_of_Source_Media: commercial GPS receiver (uncorrected)
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Range_Of_Date/Times:
            Beginning_Date: 1992
            Ending_Date: 1995
      Source_Citation_Abbreviation: Fousek (1996)
      Source_Contribution:
        Locations were identified by GPS, using a commercial receiver, with
        no differential correction. Published latitude-longitude coordinates
        were expressed in degrees, to 4 decimal places. Tabular data on the 
        concentration of lead in surface sediment were entered into table
        alsamPb.dbf. Tabular data on the thickness of Pb-rich sediment, and
        its thickness-interval weighted-average concentration of lead were 
        entered into table thkpb11.dbf. See Process_Step for sample-site
        location methodologies.

      Source_Citation:
        Citation_Information:
          Originator: USEPA
          Publication_Date: 1998
          Title:
            Sediment contamination in the Lower Coeur d'Alene River Basin
            (LCDARB); Geophysical and sediment coring investigations in the
            river channel, lateral lakes, and floodplains; Bunker Hill 
            Facility Basin-Wide RI/FS Data Report: Seattle and Belleview,
            Washington, URS Greiner, Inc. and CH2M Hill, for USEPA, 2 vols.
          Geospatial_Data_Presentation_Form: paper maps
          Publication_Information:
            Publication_Place: Seattle and Belleview, Washington
            Publisher: URS Greiner, Inc. and CH2M Hill, for USEPA
      Source_Scale_Denominator: 1:24,000 and larger
      Type_of_Source_Media: commercial GPS receiver (with differential 
            correction)
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Range_Of_Date/Times:
            Beginning_Date: 1997
            Ending_Date: 1998
      Source_Citation_Abbreviation: USEPA (1998)
      Source_Contribution:
        Locations were identified by GPS,using a commercial receiver, with
        differential correction. Digital tables of latitude-longitude
        coordinates and geochemical data were included with the
        report. Data on the concentration of lead in surface sediment were
        entered into table alsamPb.dbf. Data on the thickness of Pb-rich 
        sediment, and its thickness-interval weighted-average concentration
        of lead were entered into table thkpb11.dbf. See Process_Step for 
        sample site location methodologies.

      Source_Citation:
        Citation_Information:
          Originator: USEPA (1999a)
          Publication_Date: 1999
          Title:
            Engineering evaluation/cost analysis response action under 
            the Comprehensive Environmental Response Compensation and 
            Liability Act: Union Pacific Railroad, Wallace-Mullan 
            Branch: Wallace, Idaho, McCully, Frick and Gilman, Inc.,
            for USEPA.
          Geospatial_Data_Presentation_Form: paper maps
          Publication_Information:
            Publication_Place: Wallace, Idaho
            Publisher: McCully, Frick and Gilman, Inc., for USEPA.
      Source_Scale_Denominator: large-scale
      Type_of_Source_Media: maps
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1999
      Source_Citation_Abbreviation: USEPA (1999a)
      Source_Contribution:
        We obtained a digital table of UTM coordinates and geochemical data
        by electronic transfer from the Coeur d'Alene tribal GIS group, who
        transferred sample sites from maps accompanying the report to USGS 
        topographic maps, from which they measured UTM coordinates. These 
        data were used to compile the table alsamPb.dbf, which contains 
        locations and Pb geochemical data for surface-sediment samples from
        the study area of this report. See Process_Step for sample site
        location methodologies.

      Source_Citation:
        Citation_Information:
          Originator: USEPA (1999b)
          Publication_Date: 1999
          Title:
            Public area sample results available; Early-action areas
            identified: USEPA Briefing Sheet. Coeur d'Alene River Basin
            RI/FS, EPA Field Samplimg Plan #5.
          Geospatial_Data_Presentation_Form: paper map
          Publication_Information:
            Publication_Place: Seattle, WA
            Publisher:  USEPA
      Source_Scale_Denominator: 1:96,154
      Type_of_Source_Media: map
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1999
      Source_Citation_Abbreviation: USEPA (1999b)
      Source_Contribution:
        USEPA published a page-sized map of sample locations, with an 
        accompanying table of geochemical data. We transfered sample
        locations to a 1:24,000-scale topographic map, from which we
        measured approximate UTM oordinates. These data were entered into 
        table alsamPb.dbf, which contains locations and Pb geochemical 
        data for surface-sediment samples from the study area of this report.
        See Process_Step for sample site location methodologies.

      Source_Citation:
        Citation_Information:
          Originator: Campbell,J.K.
          Originator: Audet,D.J.
          Originator: Kern,J.W.
          Originator: Reyes,M.
          Originator: McDonald,L.L.
          Publication_Date: 1999
          Title:
            Metal contamination of palustrine and lacustrine habitats in 
            the CdA Basin, Idaho; Draft report: Spokane, Washington, USFWS
            and Western Ecosystems Technology, Inc.
          Geospatial_Data_Presentation_Form: digital tables
          Publication_Information:
            Publication_Place: Spokane, Washington
            Publisher: USFWS and Western Ecosystems Technology, Inc.
      Source_Scale_Denominator: 1:8,000 to 1:20,000
      Type_of_Source_Media: commercial GPS receiver(with differential 
            correction)
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Range_Of_Date/Times:
            Beginning_Date: 1995
            Ending_Date: 1999
      Source_Citation_Abbreviation: Campbell and others (1999)
      Source_Contribution:
        We obtained a digital table of UTM coordinates and geochemical data
        from USFWS via electronic transfer from the Coeur d'Alene GIS group.
        We entered those data into table alsamPb.dbf, which contains 
        locations and Pb geochemical data for surface-sediment samples from 
        the study area of this report. See Process_Step: for sample site 
        location methodologies.

      Source_Citation:
        Citation_Information:
          Originator: Box,S.E.
          Originator: Bookstrom, A.A.
          Originator: Ikramuddin,M.
          Originator: Lindsay,J.
          Publication_Date: Report in review 2001
          Title:
            Chemical analyses of metal-enriched sediments, Coeur d'Alene 
            drainage basin, Idaho: Sampling, analytical methods, and 
            results: U.S. Geological Survey Open File Report 00-xx.
          Geospatial_Data_Presentation_Form: digital tables
          Series_Information:
            Series_Name: Open file report
            Issue_Identification: OF01-XXX
          Publication_Information:
            Publication_Place: Menlo Park, CA
            Publisher: U.S. Geological Survey
      Source_Scale_Denominator: 1:24,000
      Type_of_Source_Media: maps before 1996, US Governmental GPS receiver
            after 1996 
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Range_of_Dates/Times:
            Beginning_Date: 1993
            Ending_Date: 2000
      Source_Citation_Abbreviation: Box and others (2001)
      Source_Contribution:        
        We obtained a digital table of UTM coordinates and geochemical data
        from Box and others(2001). We entered data on the concentration of 
        lead in surface sediment into table alsamPb.dbf. We entered data on
        the thickness of Pb-rich sediment, and its thickness-interval 
        weighted-average concentration into table thkpb11.dbf. See 
        Process_Step: for sample-site location methodologies.        

    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Balistrieri,L.S.
          Originator: Box,S.E.
          Originator: Ikramuddin,M.
          Originator: Horowitz,A.J.
          Originator: Elrick,K.A.
          Publication_Date: 2000
          Title:
            A study of pore water in water saturated sediments of levee
            banks and marshes in the lower Coeur d'Alene River valley,
            Idaho; Sampling, Analytical Methods, and Results.
          Edition: 1.0
          Geospatial_Data_Presentation_Form: paper tables
          Series_Information:
            Series_Name: Open-File Report 00-126
          Publication_Information:
            Publisher: U.S. Geological Survey
      Source_Scale_Denominator: 1:24,000
      Type_of_Source_Media: US Governmental GPS receiver        
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 2000
        Source_Currentness_Reference: ground condition
      Source_Citation_Abbreviation: Balistrieri and others (2000)
      Source_Contribution:
        This digital file contains sample coordinates and Pb geochemical
        data. We entered data on the concentration of lead in surface 
        sediment into table alsamPb.dbf. We entered data on the thickness
        of Pb-rich sediment, and its thickness-interval weighted-average
        concentration into table thkpb11.dbf. See Process_Step: for 
        sample-site location methodologies.

    Process_Step:
      Process_Description:
        We compiled the dBase4 file, alsamPb.dbf, from the following sources:
        Bender (1991), Rabbi (1994), Hoffmann (1995), LeJeune and others 
        (1995), Fousek (1996), USEPA(1998), USEPA (1999a,1999b), Campbell
        and others (1999), Balistrieri and others (2000), and Box and others
        (2001). We entered sample-site coordinates and geochemical data into 
        a spreadsheet, alsamPb.xls (in MS Excel 2000), which we converted to
        a dBase4 database, alsamPb.dbf. We then imported this database into 
        ArcView as an Event Theme, so that the data can be displayed and 
        queried. Included in the GIS is an AVL (alsampb.avl) that is used
        to format the ArcView theme legend.

    Process_Step:
      Process_Description:
        We compiled the dBase4 file, thkpb11.dbf, from the following sources: 
        Bender (1991), Rabbi (1994), Hoffmann (1995), LeJeune and others 
        (1995), Fousek (1996), USEPA(1998), USEPA (1999a,1999b), Campbell
        and others (1999), Balistrieri and others (2000), and Box and others
        (2001). We entered sample site coordinates, thickness of Pb-rich 
        sediment, and thickness-interval weighted-average concentration of 
        lead into a spreadsheet, thkpb11.xls (in MS Excel 2000), which we
        converted to a dBase4 database (thkpb11.dbf). We imported that
        database into ArvcView as an Event Theme, so that the data can
        be displayed and queried. Included in the GIS is an AVL (alsampb.avl)
        that is used to format the ArcView theme legend.

    Process_Step:
      Process_Description:        
        Bender (1991), Rabbi (1994), and Hoffmann (1995) presented 1:6,250- to 
        1:25,000-scale maps of their sample locations in lateral lakes. A 
        summary article by Sprenke and others (2000) also included a small-
        scale map showing their sample locations. However, these workers did
        not describe how they located their sample sites on the maps they 
        presented. We transferred locations of sample sites from the paper 
        maps to on-screen images derived from USGS topographic maps, by 
        measuring proportional distances between corresponding mapped 
        features. We measured coordinates for each site identified on-screen,
        using ArcView software, set to meters, Universal Transverse Mercator
        (UTM), Zone 11, 1927 North American Datum (NAD 1927).

        Fousek (1996) used a commercial GPS receiver, not corrected for random 
        variations introduced by the military, to measure latitude-longitude 
        coordinates of sample sites, which he reported in decimal degrees, to
        four decimal places, as referenced to NAD 1927. We used ARC/INFO to 
        convert latitude-longitude to UTM Zone-11 coordinates. Most of those 
        locations appeared accurate to within about 100 m (330 ft), but some
        apparently were less accurate, based on comparisons of sample sample-
        site locations with sample descriptions or classifications.

        From 1993 to 1996 Box and others (2001) visually identified field 
        locations of sample sites on 1:24,000-scale USGS topographic maps, 
        referenced to the 1927 North American Datum (NAD 1927). Coordinates 
        of latitude and longitude were manually measured from those maps in 
        degrees, minutes and seconds, arithmetically converted to decimal 
        degrees (to 4 decimal places). We used ARC/INFO to convert latitude-
        longitude coordinates to metric Universal Transverse Mercator (UTM)
        coordinates for Zone 11. Locations determined in this way are 
        considered accurate to within about 50 to 150 ft (about 15 to 45 m),
        depending on the distinctiveness of the site and its distance from
        features recognized on the ground and on the map.
        
        Beginning in 1996, Balistrieri and others (2000), and Box and others 
        (2001) located sample sites with the NAVSTAR Global Positioning System 
        (GPS), Precise Positioning Service (PPS), available only to US 
        Governmental Agencies. Coordinates of latitude and longitude 
        (referenced to NAD 1927) were measured in degrees and minutes, to 
        three decimal places. Locations determined in this way are considered
        accurate to within about 10 m (33 ft). USGS drill sites in the river
        channel had been located previously by tape-and-compass measurement 
        from mapped and marked reference sites on riverbanks. Locations of 
        those reference sites were checked by GPS (PPS) measurement in 1997.
        Box and others (2001) converted coordinates expressed in decimal 
        minutes to decimal degrees (to decimal 4 places). We used ARC/INFO
        to convert these latitude-longitude coordinates to UTM Zone 11 
        coordinates.
 
        LeJeune and others (1995), USEPA (1998), and Campbell and others 
        (1999), determined sample-site coordinates using commercial GPS 
        receivers, differentially corrected for random variations introduced
        by the military, by comparison with fixed-station receivers. 
        Locations of these sites are considered accurate to within about 5 m 
        (16 ft). LeJeune and others (1995) and Campbell and others (1999) 
        referenced coordinates to NAD 1927. At our request, USEPA (1998) 
        converted UTM coordinates, measured relative to the 1983 North 
        American Datum, to UTM coordinates referenced to NAD 1927. 

        USEPA (1999b) published large-scale paper maps of sample sites in the 
        report on geochemical sampling along transects across the railroad 
        right-of-way. They noted measured distances from railroad mile-
        markers to indicate locations of sampling transects. They noted 
        perpendicular distance from the centerline of the railroad bed to 
        indicate sample-site locations. The Coeur d'Alene Tribal GIS group
        transferred locations of mile-markers and sample sites to 1:24,000-
        scale USGS topographic maps (NAD 1927), measured UTM Zone 11 
        coordinates from topographic-map grids, and entered those coordinates 
        into the spreadsheet, alsamp.xls, which we obtained from them by 
        electronic transfer.

        To verify sample-site coordinates, we plotted sample sites 
        on the shape file cdasurf4_utm.shp in ArcView. Some plot locations
        did not match field descriptions or classifications of those sites.
        For example, some sites within the floodplain, had coordinates that 
        placed them outside the floodplain. Also, some riverbank sites had
        coordinates that placed them in the river or on the floodplain. 
        In some cases we were able to correct misfit locations by matching
        them to original field map or original GPS coordinates. In other 
        cases, we moved the misfit location to the nearest site that would 
        fit its field description or wetland-unit classification. We then 
        used ArcView to determine UTM new coordinates for the revised 
        location, and we replaced the misfit coordinates with the revised 
        coordinates.

      Source_Used_Citation_Abbreviation:
        Bender (1991), Rabbi (1994), Hoffmann (1995), LeJeune and 
        others (1995), Fousek (1996), USEPA (1998), USEPA 
        (1999a, 1999b), Campbell and others (1999), Balistrieri
        and others (2000), and Box and others (2001).

      Process_Date: 2000-2001
      Process_Contact:
        Contact_Information:
          Contact_Person_Primary:
            Contact_Person: Arthur A. Bookstrom
          Contact_Organization_Primary:
            Contact_Organization: U.S. Geological Survey
          Contact_Position: Geologist
          Contact_Address:
            Address_Type: mailing and physical address
            Address: 904 W. Riverside Ave., Rm 202
            City: Spokane
            State_or_Province: WA
            Postal_Code: 99201
            Country: USA
          Contact_Voice_Telephone: 1-509-368-3119
          Contact_Facsimile_Telephone: 1-509-368-3199
          Contact_Electronic_Mail_Address: abookstrom@usgs.gov
          Hours_of_Service: 8 - 5 M-F
Spatial_Data_Organization_Information:

  Direct_Spatial_Reference_Method: Point
  Point_and_Vector_Object_Information:
    SDTS_Terms_Description:
      SDTS_Point_and_Vector_Object_Type: Point
      Point_and_Vector_Object_Count: 1426
      alsamPb.dbf (428)+ thkpb11.dbf (998) = 1426 

Spatial_Reference_Information:

  Horizontal_Coordinate_System_Definition:
    Planar:
      Grid_Coordinate_System:
        Grid_Coordinate_System_Name: Universal Transverse Mercator
        Universal_Transverse_Mercator:
          UTM_Zone_Number: 11
          Transverse_Mercator:
            Scale_Factor_at_Central_Meridian: 0.999600
            Longitude_of_Central_Meridian: -117.000000
            Latitude_of_Projection_Origin: 0.000000
            False_Easting: 500000.000000
            False_Northing: 0.000000
      Planar_Coordinate_Information:
        Planar_Coordinate_Encoding_Method: Coordinate pair
        Coordinate_Representation:
          Abscissa_Resolution: 
          Ordinate_Resolution:
        Planar_Distance_Units: Meters
    Geodetic_Model:
      Horizontal_Datum_Name: North American Datum of 1927
      Ellipsoid_Name: Clarke 1866
      Semi-major_Axis: 6378206.4000000
      Denominator_of_Flattening_Ratio: 294.98

Entity_and_Attribute_Information:
      Overview_Description:
           Entity_And_Attribute_Overview:
             This Metadata (Pbsamthk.met) has two geospatial datasets, 
             alsamPb and thkpb11. The associated ArcView files are
             alsamPb.dbf/.avl, thkpb11.dbf/.avl and an APR file
             (cdapbofp.apr), which is needed to load this project into 
             ArcView. Two AVLs are included to properly format the shape-file
             legends.


             The database file, alsamPb.dbf, contains point locations and 
             attributes for geochemical sample sites in surface sediments
             of the CdA River channel and its floodplain. Columns 
             (or fields) contain the following:

Column ID        Column Name    Column Decsription  

    A.	      SITE_NAME1    Primary name of sample site.

    B.	      SITE_NAME2    Secondary (alternative) name or number
                                of sample site.

    C.	      DATASET       Identification of data source cited in
                                reference list.

    D.	      UTM_E         Universal Transverse Mercator (Zone 11) 
                                east coordinate (m), 1927 North American
                                horizontal datum.

    E.	      UTM_N         Universal Transverse Mercator (Zone 11)
                                north coordinate (m), 1927 North American
                                horizontal datum.

    F.	      FR_RIV_(M)    Distance from river (m).

    G.	      FR_(CM)       Depth from surface to top of sample 
                                interval (cm).

    H.	      TO_(CM)       Depth from surface to bottom of sample
                                interval(cm).

    I.	      FR_(FT)       Depth from surface to top of sample 
                                interval (ft).

    J.	      TO_(FT)       Depth from surface to bottom of sample
                                interval (ft)

    K.	      PB_PPM        Pb concentration (ppm) in sediment sample.

    L.	      SYSTEM_NO     Wetland System map-unit number.

    M.	      SYS_LABEL     Wetland System map-unit label. Short 
                                definitions of the labeled system-level 
                                map units are given in the explanation of
                                plates 1 and 2 of this report, and full 
                                descriptions of them are given in the text
                                of Bookstrom and others (1999).

    N.	      USGS_REF      USGS_REF: USGS Open-File Report OF99-548
                                (reference for SYSTEM_NO and SYS_LABEL).

Entity_and_Attribute_Information:
      Overview_Description:
           Entity_And_Attribute_Overview:
             The database file, thkpb11.bdf, contains point locations and 
             attributes of sites where thickness of Pb-rich sediment has
             been determined or estimated. Thickness-weighted average Pb  
             concentration of the stratigraphic section of Pb-rich 
             sediment also is included for many of these sites. Columns
             (or fields) contain the following: 

Column ID       Column Name     Column Decsription 

  A.	          SITE_NAME1      Primary name of sample site.

  B.	          SITE_NAME2      Secondary (alternative) name or number of 
                                sample site.

  C.	          DATASET         Identification of data source cited in 
                                reference list.

  D.	          UTM_E           Universal Transverse Mercator (Zone 11) 
                                East coordinate (m), 1927 North American
                                horizontal datum.

  E.	          UTM_N           Universal Transverse Mercator (Zone 11)
                                north coordinate (m), 1927 North American 
                                datum.

  F.            DATATYP_NO      Numerical code indicating completeness of
                                measurement and sampling of the stratigraphic
                                section of Pb-rich sediment: 1 = full section
                                measured and sampled; 2 = drill-transect 
                                average thickness penetrated, average Pb 
                                concentration of full sections penetrated;
                                3 = transect-average thickness, from multiple
                                determinations by Ground-Penetrating Radar 
                                (GPR); 4 = full section, partial recovery, 
                                corrected to full penetration; 5 = full 
                                section, partial recovery, uncorrected; 6 = 
                                full section, estimated by interpolation; 
                                7 = full section of dredge spoils, estimated
                                from elevation above river summer water 
                                level; 8 = partial section measured and 
                                sampled; 9 = partial section, partially 
                                recovered, uncorrected.

 G.	          DATA_TYPE       full section (1, above), drill-transect 
                                average (2), GPR transect average (3), full 
                                section, partial recovery, corrected (4), 
                                full section, partial recovery (5), 
                                interpolated (6), estimated from topography 
                                (7), partial section (8), partial section, 
                                partial recovery (9).

H.	          CM_THK_1K       Thickness (cm, measured or estimated) of 
                                stratigraphic section of Pb-rich sediment.

I.	          PPM_Pb_1K       Thickness-weighted average concentration of  
                                Pb (ppm) in section of Pb-rich sediment.   
  
           
DISTRIBUTION_INFORMATION

  Distributor:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U.S. Geological Survey
      Contact_Instructions:
        This report is only available in an electronic format at the 
        following URL= http://geopubs.wr.usgs.gov/OF01-XXX or via anonymous 
        FTP from geopubs.wr.usgs.gov, in the directory pub/OF01-XXX

  Distribution_Liability:
    The U.S. Geological Survey (USGS) provides this data "as is".
    The USGS makes no guarantee or warranty concerning the accuracy of
    information contained in the geographic data.  The USGS further makes no
    warranties, either expressed or implied as to any other matter whatsoever,
    including, without limitation, the condition of the product, or its
    fitness for any particular purpose.  The burden for determining fitness
    for use lies entirely with the user.  Although this data has been
    processed successfully on computers at the USGS, no warranty, expressed or
    implied, is made by the USGS regarding the use of this data on any other
    system, nor does the fact of distribution constitute or imply any such
    warranty. In no event shall the USGS have any liability whatsoever for 
    payment of any consequential, incidental, indirect, special, or tort 
    damages of any kind, including, but not limited to, any loss of profits
    arising out of use of or reliance on the geographic data or arising
    out of the delivery, installation, operation, or support by the USGS.

Metadata_Reference_Information:
  Metadata_Date: 20010329
  Metadata_Review_Date: 
  Metadata_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U.S. Geological Survey
        Contact_Person: Art Bookstrom
      Contact_Position: Geologist
      Contact_Address:
        Address_Type: Mailing and physical address
        Address: 904 W. Riverside Ave. Rm. 202
        City: Spokane
        State_or_Province: Washington
        Postal_Code: 99201
        Country: USA
      Contact_Voice_Telephone: 1-509-368-3119
      Contact_Facsimile_Telephone: 1-509-368-3199
      Contact_Electronic_Mail_Address: abookstrom@usgs.gov
  Metadata_Standard_Name: FGDC CSDGM
  Metadata_Standard_Version: FGDC-STD-001-1998
  Metadata_Access_Contraints: none
  Metadata_Use_Contraints: none