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Sulfur Dioxide (2010) Nonattainment Area Summary

Data is current as of September 30, 2019


Number of Areas Number of Counties 2010 Population
36 49 2,917,128

County subtotals and grand totals may not equal sum of parts. Part counties are only counted one time within groupings. Multi-state nonattainment areas are not considered maintenance areas until all states in the area have been redesignated