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Previous Maintenance Areas No Longer Subject to the 1-hour Standard

As of June 15, 2005
View Notes

Areas Listed Alphabetically Design
Value
(ppm)
Average
Expected
Exceedence
Yr Previous
Classification
No. of
NAA
Counties
Before Nov 90
No. of
New
Counties
Total
No. of
Counties
2000
Pop.
(1000's)
EPA
Region
State Located
in
MSA/CMSA
Year
of
SIP
Call
Atlanta, GA 0.162 9.3 1989 Severe-15 11 2 13 3,699 4 GA msa 1988
Birmingham, AL 0.133 3.0 1989 Marginal 1 1 2 805 4 AL msa 1988
Canton, OH 0.135 1.7 1989 Marginal 1 0 1 378 5 OH msa 1989
Charleston, WV 0.138 2.3 1989 Moderate 0 2 2 252 3 WV msa 1989
Charlotte-Gastonia, NC 0.158 3.4 1989 Moderate 1 1 2 886 4 NC msa 1988
Cherokee Co, SC 0.132 2.4 1989 Marginal 0 1 1 53 4 SC no 1989
Cincinnati-Hamilton, OH-KY 0.157 5.4 1989 Moderate 7 0 7 1,841 5 4 OH-KY cmsa 1988
Cleveland-Akron-Lorain, OH 0.157 5.2 1989 Moderate 7 1 8 2,946 5 OH cmsa 1988
Columbus, OH 0.131 1.4 1989 Marginal 0 3 3 1,324 5 OH msa 1989
Dayton-Springfield, OH 0.143 3.1 1989 Moderate 4 0 4 951 5 OH msa 1989
Detroit-Ann Arbor, MI 0.144 3.7 1989 Moderate 7 0 7 4,833 5 MI cmsa 1988
Door Co, WI 0.126 1.8 1990 Marginal RT 0 1 1 28 5 WI no no
East Kern Co, CA 0.170 44.2 1989 Serious 0 1 1 111 9 CA    
Edmonson Co, KY 0.140 2.1 1989 Marginal RT 0 1 1 12 4 KY no 1989
Evansville, IN 0.124 1.1 1989 Marginal 0 1 1 172 5 IN msa 1989
Grand Rapids, MI 0.143 4.4 1989 Moderate 2 0 2 813 5 MI msa 1988
Greenbrier Co, WV 0.125 1.4 1989 Marginal 0 1 1 34 4 WV no 1989
Hancock & Waldo Cos, ME 0.133 2.8 1989 Marginal 1 1 2 88 1 ME no 1988
Huntington-Ashland, WV-KY 0.164 5.5 1989 Moderate* 1 3 4 207 3 4 WV-KY msa 1988
Indianapolis, IN 0.121 1.1 1989 Marginal 1 0 1 860 5 IN msa 1988
Jersey Co, IL 0.129 3.1 1990 Marginal 0 1 1 22 5 IL msa 1988
Kansas City, MO-KS 0.120 1.2 1989 Other 5 0 5 1,522 7 MO-KS msa no
Kent & Queen Anne's Co.s, MD 0.131 1.6 1990 Marginal 0 2 2 60 3 MD part part
Kewaunee Co, WI 0.147 5.5 1989 Moderate 0 1 1 20 5 WI no 1988
Knoxville, TN 0.135 1.8 1989 Marginal 0 1 1 382 4 TN msa 1989
Lake Charles, LA 0.131 2.0 1989 Marginal 1 0 1 184 6 LA msa 1989
Lexington-Fayette, KY 0.126 2.0 1989 Marginal 0 2 2 294 4 KY msa 1988
Louisville, KY-IN 0.149 1.9 1989 Moderate 3 2 5 883 4 5 KY-IN msa 1988
Manitowoc Co, WI 0.167 9.9 1989 Moderate* 0 1 1 83 5 WI no 1988
Memphis, TN 0.140 2.0 1989 Marginal* 1 0 1 897 4 TN msa 1988
Miami-Fort Lauderdale-W. Palm Beach, FL 0.138 1.7 1989 Moderate 3 0 3 5,008 4 FL cmsa 1988
Monterey Bay, CA 0.138 1.8 1989 Moderate 3 0 3 711 9 CA msa no
Muskegon, MI 0.181 9.4 1989 Moderate 1 0 1 170 5 MI msa 1988
Norfolk-Virginia Beach-Newport News (Hampton Roa 0.130 2.0 1989 Marginal 0 11 11 1,478 3 VA msa 1988
Owensboro, KY 0.137 3.7 1989 Marginal 0 2 2 92 4 KY msa 1989
Paducah, KY 0.124 1.1 1989 Marginal 0 2 2 31 4 KY no 1989
Parkersburg, WV 0.152 6.7 1989 Moderate 0 1 1 88 3 WV msa 1988
Phoenix, AZ 0.141 6.0 1990 Serious 1 0 1 3,029 9 AZ msa 1988
Pittsburgh-Beaver Valley, PA 0.149 7.0 1989 Moderate 7 0 7 2,431 3 PA cmsa 1988
Pointe Coupee Parish, LA   0.0   Marginal 0 1 1 23 6 LA    
Portland-Vancouver AQMA, OR-WA 0.128 2.2 1990 Marginal 4 0 4 1,438 10 OR-WA cmsa 1988
Raleigh-Durham, NC 0.141 4.1 1989 Moderate 0 3 3 865 4 NC msa 1988
Reading, PA 0.141 3.4 1989 Moderate 1 0 1 374 3 PA msa 1989
Richmond, VA 0.142 4.4 1989 Moderate 3 4 7 846 3 VA msa 1988
Salt Lake City, UT 0.143 2.0 1989 Moderate 2 0 2 1,137 8 UT msa 1988
San Diego, CA 0.185 12.3 1989 Serious 1 0 1 2,814 9 CA msa 1988
Santa Barbara-Santa Maria-Lompoc, CA 0.140 2.1 1989 Serious 1 0 1 399 9 CA msa 1988
Seattle-Tacoma, WA 0.131 3.3 1990 Marginal 0 3 3 3,044 10 WA cmsa no
Sheboygan, WI 0.176 9.1 1989 Moderate 1 0 1 113 5 WI msa 1988
South Bend-Elkhart, IN 0.121 1.1 1989 Marginal 2 0 2 448 5 IN msa 1989
St Louis, MO-IL 0.156 6.2 1989 Serious 8 0 8 2,483 7 5 MO-IL msa 1988
Tampa-St. Petersburg-Clearwater, FL 0.129 1.4 1989 Marginal 2 0 2 1,920 4 FL msa 1988
Toledo, OH 0.140 2.7 1989 Moderate 1 1 2 576 5 OH msa 1989
Walworth Co, WI 0.129 2.0 1989 Marginal 0 1 1 94 5 WI no 1988
Youngstown-Warren-Sharon, OH portion 0.134 2.1 1989 Marginal 2 1 2 483 5 OH msa 1989
 
54 Total Areas 97 59 156 54,735  
 
Notes:

Totals were adjusted to account for multiple maintenance areas in a single county, and the area total was adjusted to only include complete maintenance areas if all states of a multi-state area is listed.

Yr = Data from 1987-89 or 1988-90
RT = Rural Transport
* 5% Classification Change
No. Counties Before '90 = Prior designation retained by operation of law
Sip Call = EPA called for a new State Implementation Plan

The Ohio portion of the Youngstown-Warren-Sharon OH-PA area is a previous maintenance area, while the Pennsylvania portion remains previous nonattainment. This report lists the OH portion of the area, but does not include it in the total count.

The former 1-hour ozone designations and classifications as of June 15, 2004, are being retained in subpart C of Part 81 for purposes of the anti backsliding provisions of 40 CFR 51.905. 40 CFR 51.905(c) references subpart C of part 81 for the areas affected.

Two 1-hour Ozone Maintenance Areas (that were previously nonattainment areas) became Early Action Compact (EAC) areas. As EAC areas, their maintenance plans no longer applied, and they are not listed in the “Previous Maintenance Areas No Longer Subject to the 1-hour Standard” reports. The areas are: Greensboro Winston Salem High Point, NC (initially classified as a Moderate 1-hour Ozone area), and Denver Boulder, CO (initially classified as a Section 185 1-hour Ozone area).

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