Carbon Monoxide Maintenance Area Summary

As of July 31, 2009

	Number of		Population
Classification	Areas	Counties

Serious	6	15	20,496,077
Moderate > 12.7ppm	4	19	17,575,606
Moderate <= 12.7ppm	32	64	23,612,340

SUBTOTAL:	42	96	61,684,023

Not Classified	34	40	7,616,176

SUBTOTAL:	34	40	7,616,176


GRAND TOTAL:	76	130	69,300,199

County and area subtotals and grand totals may not equal sum of parts. Part counties are only counted one time within groupings. Area totals only include full maintenance areas for a multi-state area. The Oshkosh Wisconsin area is not included in the totals above. In the August 17, 1994 Federal Register, EPA redesignated Oshkosh from unclassifiable to attainment for carbon monoxide (effective on October 17, 1994: see 59 FR 42168).

Carbon Monoxide Maintenance Area Summary

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