Downloads: Data | GIS | Maps

This page provides links to shapefile downloads for designated 8-hour Ozone (1997 and 2008 standards), PM-2.5 (1997 and 2006 standards), and Lead (2008 standard) areas. The shapefiles include boundary information for all of the designated areas. External files are provided that contain the current nonattainment/maintenance status and classification for the designated areas. The shapefiles can be downloaded to a directory or disk by clicking on the links below.

Each shapefile is composed of multiple files and has been compressed into a self-extracting zip file. Each zipped file contains the following individual files, which must all be saved to be properly used by mapping software:

shapefile.dbf: feature attributes
shapefile.prj: projection file
shapefile.sbn: spatial index of features
shapefile.sbx: spatial index of features
shapefile.shp: feature geometry
shapefile.shp.xml: metadata in XML format
shapefile.shx: shape index of the feature geometry

Additional information about the designated areas is available in the external data files in both xbase (dbf) and spreadsheet (xls) formats. These data files are provided in a compressed self-extracting zip file along with the file "ExternalFileData.txt" which lists the area attributes in the external data files. The external data files can be linked to the shapefiles through the composID field in each file.

Note:

The compressed area shapefiles that can be downloaded below contain the boundary shapes for all of the areas that were designated nonattainment for a standard. The external data files contain the current area status information (as of the Green Book posted date), indicating as of the date of the Green Book posting the reclassification and whether an area is nonattainment or has been redesignated to maintenance.

Links to Downloadable Files

Pollutant	Area Shapefiles (compressed)	External Data Files * (xls and dbf compressed)
8-Hour Ozone (2008 Standard)	Download (file size ~8.5 MG)	Download (file size <10 KB)
8-Hour Ozone (1997 Standard)	Download (file size ~4 MG)	Download (file size <10 KB)
PM-2.5 (1997 Standard)	Download (file size ~400 KB)	Download (file size <10 KB)
PM-2.5 (2006 Standard)	Download (file size ~600 KB)	Download (file size <10 KB)
Lead (2008 Standard)	Download (file size ~100 KB)	Download (file size <10 KB)

* Multi-state nonattainment areas are not considered maintenance areas until all states in the area have been redesignated.

To save the download file, click on the link. You will be given the choice of opening or saving the zipped files. Identify a directory for the zip file when prompted. If your browser loads the data onto the screen instead of asking you where to save the file, hit the back button, click on the file with your right mouse button, and select the save option (e.g., "Save Link As" in Firefox or "Save Target As" in Internet Explorer).

Each shapefile was created using ESRI's GIS mapping software and can be used by geospatial mapping applications that support the ESRI shapefile format. ArcView, ArcGIS, and ArcExplorer (ArcExplorer is free from ESRI) can be used to view the shapefiles. Commercial and free third party software is available that can be used to view shapefiles.

Disclaimer

Although these data have been processed successfully on a computer system at the Environmental Protection Agency, no warranty expressed or implied is made regarding the accuracy or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. It is strongly recommended that careful attention be paid to the contents of the metadata file associated with these data to evaluate data set limitations, restrictions or intended use. The U.S. Environmental Protection Agency shall not be held liable for improper or incorrect use of the data described and/or contained herein.

Downloads: Data | GIS | Maps

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