I'm going to post in the morning before I get too busy to post at all. We are in the middle of database design here at the City and GIS Day is approaching rapidly. I'll be glad when December gets here so it slows down a bit.
The Environmental Protection Agency is a great source for GIS data. The GIS Data Download component of C-MAP allows you to download GIS datasets. The various emissions and effects datasets can be visually integrated and analyzed in map format according to your area of interest. Many of the GIS datasets can be expanded through the use of related tables, downloadable in dBase IV format. Data summaries and metadata compliant with Federal Geographic Data Committee standards are also available with each dataset. For more information please go to http://www.epa.gov/airmarkets/cmap/data/index.html. Enjoy!
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