Bureau of Transportation Statistics (BTS)
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Non Attainment Areas (Sulfur Oxides) - Data Dictionary

Abstract: Non-attainment and maintenance areas for the United States and its territories. For more detailed information on this dataset, see the Overview Description in the Entity Attribute section of this document.

Purpose: To establish the spatial boundaries of each nonattainment and maintenance area.

Field Number Attribute Description Data Type
0 FID Internal feature number. Long Integer representing an object identifier
1 Shape Feature geometry. Geometry
2 ID Sequential Unique Identifier Double Precision Floating Point
3 AREA Area of the polygon Double Precision Floating Point
4 AREA_NAME Name of the NAA as designated by the EPA Character String
5 STATE Primary state in which NAA is found Character String
6 EPA_REGION Primary EPA region in which the NAA is found Character String
7 STATUS Current status of the area as designated by the EPA. Character String
8 CLASSIFICA Severity classification as identified by the EPA. Character String
9 ATTAINMENT Date or year in which the area received its current classification by the EPA. Character String
10 COMMENTS Additional clarifying information on the status or characteristics of the area. Character String
11 STFIPS State FIPS code Character String
12 VERSION Version of the database Character String


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