If you select all pollutants , the report has multiple columns to show the emissions of each NET pollutant. Thus, choosing an alternate sort order for a report would change the sequence numbers associated with particular rows. The sum of all area source emissions, in short tons, in the geographic area represented by a row of the report. Area sources are sources that are too small and numerous to be inventoried individually. The sum of all point source emissions, in short tons, in the geographic area represented by a row of the report.
Point sources are stationary sources of emissions.
State Postal abbreviation for the state or territory in which a source is located. Tier 2 A more detailed categorization of emissions than Tier 1. 84 subcategories used to summarize emission inventory data.