Lead-rich sediments, Coeur d'Alene River valley, Idaho; Area, volume, tonnage, and lead content: Surface-sediment geochemical data

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What does this data set describe?

Title:
Lead-rich sediments, Coeur d'Alene River valley, Idaho; Area, volume, tonnage, and lead content: Surface-sediment geochemical data
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.
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).
  1. How might this data set be cited?
    Bookstom, A.A., Box, S.E., Campbell, J.K., Foster, K.I., and Jackson, B.L., 2001, Lead-rich sediments, Coeur d'Alene River valley, Idaho; Area, volume, tonnage, and lead content: Surface-sediment geochemical data: U.S. Geological Survey Open-File Report 01-140, U. S. Geological Survey, Menlo Park, CA.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -116.8752
    East_Bounding_Coordinate: -116.2484
    North_Bounding_Coordinate: 47.6166
    South_Bounding_Coordinate: 47.4178
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 1988
    Ending_Date: 2001
    Currentness_Reference:
    Publication Date
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: Map
  6. How does the data set represent geographic features?
    1. How are geographic features stored in the data set?
      This is a Point data set. It contains the following vector data types (SDTS terminology):
      • Entity Point
    2. What coordinate system is used to represent geographic features?
      Grid_Coordinate_System_Name: Universal Transverse Mercator
      Universal_Transverse_Mercator:
      UTM_Zone_Number: 11
      Transverse_Mercator:
      Scale_Factor_at_Central_Meridian: 0.9996
      Longitude_of_Central_Meridian: -117.0
      Latitude_of_Projection_Origin: 0.0
      False_Easting: 500000.0
      False_Northing: 0.0
      Planar coordinates are encoded using Coordinate pair
      Planar coordinates are specified in Meters
      The horizontal datum used is North American Datum of 1927.
      The ellipsoid used is Clarke 1866.
      The semi-major axis of the ellipsoid used is 6378206.4.
      The flattening of the ellipsoid used is 1/294.98.
  7. How does the data set describe geographic features?
    alsamPb.dbf
    Geochemical sample sites in surface sediments of the CdA River channel and its floodplain.
    SITE_NAME1
    Primary name of sample site.
    SITE_NAME2
    Secondary (alternative) name or number of sample site.
    DATASET
    Identification of data source cited in reference list.
    ValueDefinition
    Balistrieri and others,Balistrieri and others (2000)
    Bender, 1991 
    Bookstrom, unpub. data, 
    Box and others, 2000 
    Fousek, 1996 
    Hoffmann, 1995 
    Horowitz and others, 199Horowitz, Arthur J., Elrick, Kent A., and Cook, Robert B., 1993, Effect of mining and related activities on the sediment trace element geochemistry of Lake Coeur d'Alene, Idaho, USA Part I. Surface sediments: Hydrological Processes, v. 7, p. 403-423.
    Horowitz, A.J., Elrick, K.A., Robbins, J.A., and Cook, R.B., 1995, Effect of mining and related activities on the sediment trace element geochemistry of Lake Coeur d'Alene, Idaho, USA part II: Subsurface sediments: Hydrological Processes, v. 9, p. 35-54.
    Horowitz, unpub. data, 1 
    Rabbi, 1994 
    USEPA, 1998U.S. Environmental Protection Agency (1998)
    UTM_E
    Universal Transverse Mercator (Zone 11) east coordinate (m), 1927 North American horizontal datum.
    Range of values
    Minimum:511160
    Maximum:556198
    Units:meters
    Resolution:1
    UTM_N
    Universal Transverse Mercator (Zone 11) north coordinate (m), 1927 North American horizontal datum.
    Range of values
    Minimum:5253190
    Maximum:5270653
    Units:meters
    Resolution:1
    FR_RIV_(M)
    Distance from river (m).
    Range of values
    Minimum:0
    Maximum:3079
    Units:meters
    Resolution:1
    _FR_(CM)
    Depth from surface to top of sample interval (cm).
    Range of values
    Minimum:0
    Maximum:22
    Units:centimeters
    Resolution:1
    TO_(CM)
    Depth from surface to bottom of sample interval(cm).
    Range of values
    Minimum:0
    Maximum:92
    Units:centimeters
    Resolution:1
    FR_(FT)
    Depth from surface to top of sample interval (ft).
    ValueDefinition
    (no value)not measured?
    Range of values
    Minimum:0
    Maximum:1
    Units:foot
    Resolution:1
    TO_(FT)
    Depth from surface to bottom of sample interval (ft)
    ValueDefinition
    (no value) 
    Range of values
    Minimum:1
    Maximum:9
    Units:foot
    Resolution:1
    PB_(PPM)
    Pb concentration (ppm by weight) in sediment sample.
    Range of values
    Minimum:15
    Maximum:38520
    Units:parts per million by weight
    Resolution:1
    SYSTEM_NO
    Wetland System map-unit number.
    ValueDefinition
    0not classified
    1Artificial
    2Highland
    3Lacustrine
    4Palustrine
    5Riverine
    6Upland
    7Transitional between highland and upland
    8Transitional between riverine and upland
    SYS_LABEL
    Wetland System map-unit label. Short definitions of system-level map units are given in the explanation of plates 1 and 2 of this report, and full descriptions are given in the text of Bookstrom and others (1999).
    ValueDefinition
    (no value)not classified
    AArtificial
    HHighland
    HUTransitional between highland and upland
    LLacustrine
    PPalustrine
    RRiverine
    RUTransition between riverine and upland
    UUpland
    USGS_REF
    reference for SYSTEM_NO and SYS_LABEL
    ValueDefinition
    (no value) 
    OF99_548USGS Open-File Report 99-548
    thkpb11.dbf
    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.
    SITE_NAME1
    Primary name of sample site.
    SITE_NAME2
    Secondary (alternative) name or number of sample site.
    DATASET
    Identification of data source cited in reference list.
    ValueDefinition
    Balistrieri and others,Balistrieri and others (2000)
    Bender, 1991 
    Bookstrom, unpub. data, 
    Box and others, 2000 
    Fousek, 1996 
    Hoffmann, 1995 
    Horowitz and others, 199Horowitz, Arthur J., Elrick, Kent A., and Cook, Robert B., 1993, Effect of mining and related activities on the sediment trace element geochemistry of Lake Coeur d'Alene, Idaho, USA Part I. Surface sediments: Hydrological Processes, v. 7, p. 403-423.
    Horowitz, A.J., Elrick, K.A., Robbins, J.A., and Cook, R.B., 1995, Effect of mining and related activities on the sediment trace element geochemistry of Lake Coeur d'Alene, Idaho, USA part II: Subsurface sediments: Hydrological Processes, v. 9, p. 35-54.
    Horowitz, unpub. data, 1 
    Rabbi, 1994 
    USEPA, 1998U.S. Environmental Protection Agency (1998)
    UTM_E
    Universal Transverse Mercator (Zone 11) east coordinate (m), 1927 North American horizontal datum.
    Range of values
    Minimum:511160
    Maximum:556198
    Units:meters
    Resolution:1
    UTM_N
    Universal Transverse Mercator (Zone 11) north coordinate (m), 1927 North American horizontal datum.
    Range of values
    Minimum:5253190
    Maximum:5270653
    Units:meters
    Resolution:1
    DATATYP_NO
    Numerical code indicating completeness of measurement and sampling of the stratigraphic section of Pb-rich sediment
    ValueDefinition
    1full section measured and sampled
    2drill-transect average thickness penetrated, average Pb concentration of full sections penetrated
    3transect-average thickness, from multiple determinations by Ground-Penetrating Radar (GPR)
    4full section, partial recovery, corrected to full penetration
    5full section, partial recovery, uncorrected
    6full section, estimated by interpolation
    7full section of dredge spoils, estimated from elevation above river summer water level
    8partial section measured and sampled
    9partial section, partially recovered, uncorrected.
    DATA_TYPE
    Meaning of DATATYP_NO (brief)
    ValueDefinition
    DRILL- transect average 
    estimated from topography 
    full section 
    full section, partial recovery 
    full section, partial recovery, 
    GPR transect average 
    interpolated 
    partial section 
    partial section, partial recove 
    CM_THK_1K
    Thickness (cm, measured or estimated) of stratigraphic section of Pb-rich sediment.
    Range of values
    Minimum:0
    Maximum:1100
    Units:centimeters
    Resolution:1
    PPM_PB_1K
    Thickness-weighted average concentration of Pb (ppm) in section of Pb-rich sediment.
    Range of values
    Minimum:0
    Maximum:22103
    Units:parts per million by weight
    Resolution:1

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Bookstom,A.A.
    • Box,S.E.
    • Campbell,J.K.
    • Foster,K.I.
    • Jackson,B.L.
  2. Who also contributed to the data set?
    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.
  3. To whom should users address questions about the data?
    U.S. Geological Survey
    Attn: Arthur A. Bookstrom
    Geologist
    904 W. Riverside Ave. Rm. 202
    Spokane, Washington
    USA

    1-509-368-3119 (voice)
    1-509-368-3199 (FAX)
    abookstrom@usgs.gov

Why was the data set created?

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.

How was the data set created?

  1. From what previous works were the data drawn?
    Bender (1991) (source 1 of 11)
    Bender, S. F., 1991, Investigation of the chemical composition and distribution of mining wastes in Killarney Lake, Coeur d'Alene area, northern Idaho..

    Other_Citation_Details: Unpublished M.S. thesis University of Idaho
    Type_of_Source_Media: map
    Source_Scale_Denominator: 25000
    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.
    Rabbi (1994) (source 2 of 11)
    Rabbi, F., 1994, Trace element geochemistry of bottom sediments and waters from the lateral lakes of Coeur d'Alene River,Kootenai County, north Idaho.

    Other_Citation_Details: Unpublished Ph.D. dissertation University of Idaho.
    Type_of_Source_Media: maps
    Source_Scale_Denominator: 11000 to 15625
    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.
    Hoffman (1995) (source 3 of 11)
    Hoffman, M.L., 1995, Characterization of heavy metal contamination in two lateral lakes of the lower Coeur d'Alene River valley, northern Idaho..

    Other_Citation_Details: Unpublished M.S. thesis University of Idaho
    Type_of_Source_Media: map
    Source_Scale_Denominator: 17860
    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.
    LeJeune and others (1995) (source 4 of 11)
    LeJeune, K.C., Cacela, D., Lipton, J., and Cors, C., 1995, Riparian resources injury assessment; Data report: 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)., Boulder Colorado.

    Type_of_Source_Media: paper
    Source_Scale_Denominator: 24000
    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.
    Fousek (1996) (source 5 of 11)
    Fousek, R.S., 1996, 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.

    Other_Citation_Details: Unpublished M.S. thesis Auburn University, Alabama
    Type_of_Source_Media: paper
    Source_Scale_Denominator: 250000
    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.
    U.S. Environmental Protection Agency (1998) (source 6 of 11)
    U.S. Environmental Protection Agency, 1998, 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 U.S. Environmental Protection Agency, Seattle and Belleview, Washington.

    Type_of_Source_Media: paper
    Source_Scale_Denominator: 24000
    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.
    U.S. Environmental Protection Agency (1999a) (source 7 of 11)
    U.S. Environmental Protection Agency (1999a), 1999, Engineering evaluation/cost analysis response action under the Comprehensive Environmental Response Compensation and Liability Act: Union Pacific Railroad, Wallace-Mullan Branch: McCully, Frick and Gilman, Inc., for U.S. Environmental Protection Agency., Wallace, Idaho.

    Type_of_Source_Media: paper
    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.
    U.S. Environmental Protection Agency (1999b) (source 8 of 11)
    U.S. Environmental Protection Agency (1999b), 1999, Public area sample results available; Early-action areas identified: U.S. EPA Briefing Sheet. Coeur d'Alene River Basin RI/FS, EPA Field Samplimg Plan #5.: U.S. Environmental Protection Agency, Seattle, WA.

    Type_of_Source_Media: paper
    Source_Scale_Denominator: 96154
    Source_Contribution:
    U.S. Environmental Protection Agency 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.
    Campbell and others (1999) (source 9 of 11)
    Campbell, J.K., Audet, D.J., Kern, J.W., Reyes, M., and McDonald, L.L., 1999, Metal contamination of palustrine and lacustrine habitats in the CdA Basin, Idaho; Draft report: USFWS and Western Ecosystems Technology, Inc., Spokane, Washington.

    Type_of_Source_Media: paper
    Source_Scale_Denominator: 8000 to 20000
    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.
    Box and others (2001) (source 10 of 11)
    Box, S.E., Bookstrom, A.A., Ikramuddin, M., and Lindsay, J., in preparation, Chemical analyses of metal-enriched sediments, Coeur d'Alene drainage basin, Idaho: Sampling, analytical methods, and results: U.S. Geological Survey Open-File Report 01-xxx, U.S. Geological Survey, Menlo Park, CA.

    Type_of_Source_Media: paper before 1996, US Governmental GPS receiver after 1996
    Source_Scale_Denominator: 24000
    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.
    Balistrieri and others (2000) (source 11 of 11)
    Balistrieri, L.S., Box, S.E., Ikramuddin, M., Horowitz, A.J., and Elrick, K.A., 2000, 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.: U.S. Geological Survey Open-File Report 00-126.

    Type_of_Source_Media: digital
    Source_Scale_Denominator: 24000
    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.
  2. How were the data generated, processed, and modified?
    (process 1 of 4)
    We compiled the dBase4 file, alsamPb.dbf, from the following sources: Bender (1991), Rabbi (1994), Hoffmann (1995), LeJeune and others (1995), Fousek (1996), U.S. EPA (1998), U.S. EPA (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 2 of 4)
    We compiled the dBase4 file, thkpb11.dbf, from the following sources: Bender (1991), Rabbi (1994), Hoffmann (1995), LeJeune and others (1995), Fousek (1996), U.S. EPA (1998), U.S. EPA (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.
    Date: 2000 (process 3 of 4)
    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), U.S. EPA (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, U.S. EPA (1998) converted UTM coordinates, measured relative to the 1983 North American Datum, to UTM coordinates referenced to NAD 1927.
    U.S. EPA (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. Person who carried out this activity:
    Arthur A. Bookstrom
    U.S. Geological Survey
    Geologist
    904 W. Riverside Ave., Rm 202
    Spokane, WA
    USA

    1-509-368-3119 (voice)
    1-509-368-3199 (FAX)
    abookstrom@usgs.gov
    Data sources used in this process:
    • Bender (1991)
    • Rabbi (1994)
    • Hoffmann (1995)
    • LeJeune and others (1995)
    • Fousek (1996)
    • U.S. Environmental Protection Agency (1998)
    • U.S. Environmental Protection Agency (1999a)
    • U.S. Environmental Protection Agency (1999b)
    • Campbell and others (1999)
    • Balistrieri and others (2000)
    • Box and others (2001)
    Date: 29-Mar-2001 (process 4 of 4)
    Creation of original metadata record Person who carried out this activity:
    U.S. Geological Survey
    Attn: Art Bookstrom
    Geologist
    904 W. Riverside Ave. Rm. 202
    Spokane, Washington
    USA

    1-509-368-3119 (voice)
    1-509-368-3199 (FAX)
    abookstrom@usgs.gov
  3. What similar or related data should the user be aware of?

How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?
    Attribute accuracy was verified by manual comparison of the source data with hardcopy printouts, x-y plots and on screen evaluations.
  2. How accurate are the geographic locations?
    Sample sites generally +/- 10 to 100 meters. Locations of sample sites were identified and recorded by different methods in different studies (table 1).
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
  5. How consistent are the relationships among the observations, including topology?

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?
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.
  1. Who distributes the data set? (Distributor 1 of 1)
    Arthur A Bookstrom
    U.S. Geological Survey, GEO-WRG-MRS
    W 904 Riverside Avenue
    Spokane, WA
    USA

    509-368-3119 x (voice)
    509-368-3199 (FAX)
    abookstrom@usgs.gov
  2. What's the catalog number I need to order this data set?
  3. What legal disclaimers am I supposed to read?
    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.
  4. How can I download or order the data?

Who wrote the metadata?

Dates:
Last modified: 05-Feb-2016
Metadata author:
Peter N Schweitzer
USGS Midwest Area
Collection manager, USGS Geoscience Data Clearinghouse, http://geo-nsdi.er.usgs.gov/
Mail Stop 954
12201 Sunrise Valley Dr
Reston, VA
USA

703-648-6533 (voice)
703-648-6252 (FAX)
pschweitzer@usgs.gov
Metadata standard:
Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)

This page is <https://geo-nsdi.er.usgs.gov/metadata/open-file/01-140/pbsamthk.faq.html>
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