Maintenance Particulate Matter (PM-2.5) 1997 Standard Areas

As of December 14, 2012 | Design Value (DV) Notes
Current and historical design value data can be found at http://www.epa.gov/airtrends/values.html

Areas Listed Alphabetically	Design Values at Designation	No. Counties NAA	2010 Population	EPA Region	State
	(2001-2003)
	Annual
	(ug/m3)
Cincinnati-Hamilton, OH-KY-IN	17.8	8	1,962,943	5 4	OH-KY-IN
Evansville, IN	16.2	6	296,995	5	IN
Greensboro-Winston Salem-High Point, NC	15.8	2	651,284	4	NC
Hickory-Morganton-Lenoir, NC	15.5	1	154,358	4	NC

4 Total Areas		17	3,065,580

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