Originally developed by Teale Data Center GIS Lab; updated by California Air Resources Board, November 2003. November 2003 vector digital data http://gis.ca.gov/casil/boundaries/arb/fed_designations_casil/ The federal NO2, SO2, CO designations layer is a polygon coverage providing area designations as per 40CFR81.305. There are three designation categories: nonattainment, unclassifiable and attainment areas. This data layer is current as of November 2003. Projection: Teale Albers, NAD83 Designation areas are defined pursuant to the corresponding federal national ambient air quality standard for each pollutant as per the Clean Air Act. November 2003 publication date Complete As needed -124.504865 -113.497796 42.069056 32.423438 NO2 NO2 SO2 CO designation NAAQS CO SO2 NAAQS National Ambient Air Quality Standard None None California Air Resources Board mailing address

1001 I Street, P.O. Box 2815

Sacramento CA 95812 USA Microsoft Windows 2000 Version 5.1 (Build 2600) Service Pack 1; ESRI ArcCatalog 8.3.0.800 Vector G-polygon 100 Albers Conical Equal Area 34.000000 40.500000 -120.000000 0.000000 -4000000.000000 coordinate pair 0.002048 0.002048 meters North American Datum of 1983 GRS 1980 6378137.000000 298.257222101 fed_SO2_CO_NO2_coabdis FID Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. Shape Feature geometry. ESRI Coordinates defining the features. CACOA_ CACOA_ID CONAME NAME CONUM DISPLAY SYMBOL ISLANDNAME BAYSPLINTE CNTYI_AREA ABASA_ ABASA_ID BASIN_NAME COABI_AREA ISLAND_ID BAY_ID SO2 CO NO2 NO2 Downloadable Data 4.606 20040622 Neva Sotolongo California Air Resources Board, Planning and Technical Support Division Air Pollution Specialist mailing address

1001 I Street, P.O. Box 2815

Sacramento CA 95812 USA 916-322-6024 nsotolon@arb.ca.gov FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time http://www.esri.com/metadata/esriprof80.html ESRI Metadata Profile