Previous 1-Hour Ozone Nonattainment Area Summary with History
As of June 15, 2005
NUMBER OF AREAS NUMBER OF COUNTIES 2000 POPULATION (1000s)
Original Adjusted Original Adjusted Original Adjusted
Classification 1991 1991 Today Redesignated 1991 1991 Today Redesignated 1991 1991 Today Redesignated
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Extreme 1 2 2 0 4 12 12 0 13,000 17,784 17,784 0
Severe (2007) 5 5 5 0 52 51 51 0 31,683 35,419 35,419 0
Severe (2005) 4 7 6 1 22 61 48 13 11,525 20,434 16,735 3,699
Serious 14 13 8 5 86 50 38 12 22,724 24,961 16,125 8,836
Moderate 31 29 5 24 113 95 12 83 40,176 29,742 1,737 28,005
Marginal 42 43 18 25 89 90 38 52 19,533 21,529 6,884 14,645
Other 1 2 1 1 5 14 9 5 1,362 8,064 6,542 1,522
SUBTOTALS: 98 101 45 56 371 364 199 165 140,003 157,933 101,226 56,707
Section 185A 12 11 3 8 23 21 4 17 5,151 5,466 459 5,007
Incomplete Data 47 23 14 9 50 26 15 11 3,755 2,182 1,260 922
SUBTOTALS: 59 34 17 17 73 47 19 28 8,906 7,648 1,719 5,929
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GRAND TOTAL: 157 135 62 73 444 410 217 193 148,909 165,581 102,945 62,636
* See attached adjustments to original 1991 nonattainment areas.
County subtotals and grand totals may not equal sum of parts. Part counties are only counted one time within groups.
"Section 185A" was previously called "Transitional". The Ohio portion of the Youngstown-Warren-Sharon OH-PA area
is a maintenance area, while the Pennsylvania portion remains nonattainment. The redesignated area column of this
report does not include the partially redesignated areas.
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