Metadata - Census 2000 (c2k)

GEODATASET NAME: GLSBLKGRP

IDENTIFICATION INFORMATION

Description:
    Census 2000 (c2k) census block groups for the Great Lakes Basin 
    study area plus 5-km buffer 
Abstract:
    Census block groups and corresponding centroid-based attribute data 
    extracted from Census2000 blocks, SDE/Oracle PL94-171 file on the RTP 
    server
Data Type:
    Coverage, polygon
Data Originator:
    U.S. Bureau of Census
    Washington, DC
      and
    U.S. Environmental Protection Agency 
    Research Triangle Park, NC
Data Processors:
    Rick Van Remortel, Ed Evanson, Lee Bice
    Lockheed Martin Environmental Services
    1050 E. Flamingo Road, Suite E120
    Las Vegas, NV 89119
    (702)897-3295
    rvanremo@lmepo.com
Data Provider:
    Ricardo Lopez, Ph.D.
    U.S. Environmental Protection Agency
    National Exposure Research Laboratory
    P.O. Box 93478
    Las Vegas, NV 89193-3478
    (702)798-2394
    lopez.ricardo@epa.gov
Keywords:
    Great Lakes Basin, Census2000, census block groups
Version:
    N/A
Status:
    Interim
Revision Number:
    0
Series Name:                    
Online Link (URL):
Time Period of Content:        
Use Constraints: 
    PL-171 data is a preliminary output from the Census2000 product
    array and should be considered draft, for internal use only.  
Purpose:
    Great Lakes Basin Landscape Metric Browser website
Date of metadata entry/update:
    11/15/2004
 
No Publication Information Available
No File Security Information Available
  
DATA QUALITY INFORMATION
 
Cloud Cover:
    Not applicable
Software:
    ArcGIS 8.2
Operating System:
    Windows XP Pro
Path Name:
    solec/gds/glsblkgrp
Logical Consistency Report:
    Not presently available
Completeness Report:
    Not presently available
Horizontal Positional Accuracy:
    Not presently available
Vertical Positional Accuracy:
    Not presently available
Attribute Accuracy:
    Not presently available
Procedures:
    Census block groups were extracted from the Census2000 census blocks 
    geodataset by truncating the attribute values within STCNRBLK to its 
    initial 12 characters. These new attribute field values were then 
    dissolved to create the block-group level.
Reviews Applied to Data:
    Lockheed Martin internal review
Related Spatial Data Files:
    All geodatasets with gls_ prefix
Other References Cited:  
Notes: 
Update Frequency:
    As needed
 
SPATIAL REFERENCE INFORMATION

               Description of DOUBLE precision coverage GLSBLKGRP

                                FEATURE CLASSES

                                    Number of  Attribute     Spatial
Feature Class          Subclass     Features   data (bytes)  Index?   Topology?
-------------          --------     ---------  ------------  -------  ---------
ARCS                                    67965
POLYGONS                                24680       366               Yes
NODES                                   43418

                               SECONDARY FEATURES

Tics                                        4
Arc Segments                           740714
Polygon Labels                          24679

                                   TOLERANCES

Fuzzy   =                 0.000 V          Dangle  =                 0.000 V

                               COVERAGE BOUNDARY

Xmin =               213000.109            Xmax =              1712183.750
Ymin =              1990383.125            Ymax =              2834680.250

                                     STATUS

The coverage has not been Edited since the last BUILD or CLEAN.

                          COORDINATE SYSTEM DESCRIPTION

Projection               ALBERS
Datum                     NAD83
Units                    METERS             Spheroid                GRS1980
Parameters:
1st standard parallel                                   29 30  0.000
2nd standard parallel                                   45 30  0.000
central meridian                                       -96  0  0.000
latitude of projection's origin                         23  0  0.000
false easting (meters)                                       0.00000
false northing (meters)                                      0.00000

ENTITY AND ATTRIBUTE INFORMATION
Annotation Name:       
 
ATTRIBUTE LISTING FOR: glsblkgrp.pat 

COLUMN   ITEM NAME   WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME   INDEXED?
    1  AREA              8    18     F      5                        -
    9  PERIMETER         8    18     F      5                        -
   17  GLSBLKGRP#        4     5     B      -                        -
   21  GLSBLKGRP-ID      4     5     B      -                        -
   25  ILBLKGA83_        8    16     F      3                        -
   33  ID                8    16     F      3                        -
   41  FIPSSTCO          5     5     C      -                        -
   46  TRACT             6     6     C      -                        -
   52  GROUP             1     1     C      -                        -
   53  STFID            12    12     C      -                        -
   65  AREA_NAME        50    50     C      -                        -
  115  STATE             2     2     C      -                        -
  117  XCOORD            8    16     F      3                        -
  125  YCOORD            8    16     F      3                        -
  133  POP80             8    16     F      3                        -
  141  POP90             8    16     F      3                        -
  149  POPCY             8    16     F      3                        -
  157  POP5Y             8    16     F      3                        -
  165  POP0Y             8    16     F      3                        -
  173  AGE80MEDPX        8    16     F      3                        -
  181  AGE90MEDPX        8    16     F      3                        -
  189  AGECYMEDPX        8    16     F      3                        -
  197  AGE5YMEDPX        8    16     F      3                        -
  205  AGE0YMEDPX        8    16     F      3                        -
  213  HHD80             8    16     F      3                        -
  221  HHD90             8    16     F      3                        -
  229  HHDCY             8    16     F      3                        -
  237  HHD5Y             8    16     F      3                        -
  245  HHD0Y             8    16     F      3                        -
  253  INC80AVE          8    16     F      3                        -
  261  INC90AVE          8    16     F      3                        -
  269  INCCYAVE          8    16     F      3                        -
  277  INC5YAVE          8    16     F      3                        -
  285  INC0YAVE          8    16     F      3                        -
  293  INC80MEDHX        8    16     F      3                        -
  301  INC90MDHHX        8    16     F      3                        -
  309  INCCYMEDHX        8    16     F      3                        -
  317  INC5YMEDHX        8    16     F      3                        -
  325  INC0YMEDHX        8    16     F      3                        -
  333  STATUS           25    25     C      -                        -
  358  ORGAREA           8    18     F      3                        -

METADATA REFERENCE SECTION
 
FGDC Content Standards for Digital Geospatial Metadata
FGDC Standards Version 6/98 / metadata.aml ver. 1.3 5/21/99

SUPPLEMENTAL METADATA (where available)