The source of the TRI_92AK mapping dataset is the US Environmental Protection Agency (EPA), Region The contributing staff are unknown, but the following materials from EPA (listed here in quotation marks) are offered as documentation from the July 1994 work performed by EPA Region 10 staff to create this ARC/INFO GIS dataset comprised of six TRI sites.
"This computer representation has been compiled by the Environmental Protection Agency (EPA) from sources which have supplied data or information that has not been verified by the EPA. This data is offered here as a general representation only, and is not to be used for commercial purposes without verification by an independant professional qualified to verify such data or information. The EPA does not guarantee the accuracy, completeness, or timeliness of the information shown, and shall not be liable for any loss or injury resulting from reliance upon the information shown."
"This documents the tri92 and tri92_ak coverages:
07/11/94 RBD
These coverages were copied from Bogue's area:
copy /usr12/datalib/tri90/tri92 tri92
copy /usr12/datalib/tri90/tri92ak tri92_ak"
COORDINATE SYSTEM DESCRIPTION
Projection ALBERS
Units METERS
Spheroid CLARKE1866
Parameters:
1st standard parallel 55 0 0.000
2nd standard parallel 65 0 0.000
central meridian -154 0 0.00
latitude of projection's origin 50 0 0.000
false easting (meters) 0.00000
false northing (meters) 0.00000
Items Definitions for TRI92_AK:
COLUMN
ITEM NAME
WIDTH
OUTPUT
TYPE
N.DEC
1
AREA
4
12
F
3
5
PERIMETER
4
12
F
3
9
TRI92_AK#
4
5
B
-
13
TRI92_AK-ID
4
5
B
-
17
TRI
15
15
C
-
32
NAME
30
30
C
-
62
ADDRESS
30
30
C
-
92
CITY
25
25
C
-
117
STATE
2
2
C
-
119
LONG
4
8
B
-
123
LAT
4
8
B
-
127
R10-LONG
4
8
B
-
131
R10-LAT
4
8
B
-
135
CHKBY
3
3
C
-
138
UPDBY
3
3
C
-
141
UPDDT
6
6
I
-
147
LLSRC
10
10
C
-
Processing History:
Date Time User Command
-------- ----- ------- ------------------------
05/21/98 10:20 sharon project cover tri92_ak_wprj tri92_ak $PRJ/epa2alb.prj
05/21/98 10:20 sharon build tri92_ak point
Brief listing of six records in TRI92_AK dataset from EPA Region 10:
RECORD
NAME
ADDRESS
CITY
1
UNOCAL PETROLEUM PRODS.
MILE 21 SPUR HWY.
KENAI
2
TESORO ALASKA PETROLEUM CO.
MILE 22.5 KENAI SPUR RD.
KENAI
3
UNISEA INC.
POUCH 500
DUTCH HARBOR
4
MAPCO ALASKA PETROLEUM INC.
1100 H & H LN.
NORTH POLE
5
ALASKA PULP CORP.
4600 SAWMILL CREEK RD.
SITKA
6
KETCHIKAN PULP CO.
7559 N. TONGASS HWY.
KETCHIKAN
Contact EPA:
Questions, comments, suggestions?
Feedback to Ray Peterson
rpeterso@r0serv.r10.epa.gov
(206) 553-1682
http://www.epa.gov/r10earth/datalib/
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