Jump to main content.


Areas with a Maintenance Plan Requirement Under
Section 110(a)(1) of the CAA

As of June 15, 2005



SERIOUS
     Boston-Lawrence-Worcester (E. MA), MA-NH
     East Kern Co, CA
     El Paso, TX
     Portsmouth-Dover-Rochester, NH
     San Diego, CA
     Santa Barbara-Santa Maria-Lompoc, CA
 
MODERATE
     Huntington-Ashland, WV-KY
     Knox & Lincoln Co.s, ME
     Lewiston-Auburn, ME
     Miami-Fort Lauderdale-W. Palm Beach, FL
     Monterey Bay, CA
     Portland, ME
     Salt Lake City, UT
 
MARGINAL
     Cherokee Co, SC
     Edmonson Co, KY
     Greenbrier Co, WV
     Hancock & Waldo Cos, ME
     Johnstown, PA
     Lake Charles, LA
     Lexington-Fayette, KY
     Manchester, NH
     Owensboro, KY
     Paducah, KY
     Pointe Coupee Parish, LA
     Portland-Vancouver AQMA, OR-WA
     Reno, NV
     Scranton-Wilkes-Barre, PA
     Seattle-Tacoma, WA
     Smyth Co, VA (White Top Mtn)
     Sunland Park, NM (New Area 1995)
     Tampa-St. Petersburg-Clearwater, FL
     Walworth Co, WI
 
OTHER
     Kansas City, MO-KS
     Greensboro-Winston Salem-High Point, NC
     Nashville, TN

The 1-hour ozone standard, as well as designations and classifications for all 1-hour ozone nonattainment and maintenance areas, have been revoked except for the Greensboro, NC, Nashville, TN, and Denver, CO maintenance areas.

The Kansas City, MO-KS area has a sub-marginal classification. 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 by the anti-backsliding regulation. These classifications are either the nonattainment or maintenance classifications as of June 14, 2004.

The Nashville, TN and Greensboro-Winston Salem-High Point, NC 1-hour Ozone maintenance areas were Early Action Compact (EAC) areas. The 1-hour standard was revoked for the EAC areas on April 15, 2009, one year after the effective date (April 15, 2008) of their designation as attainment for the 8-hour Ozone standard. At that time, the Nashville, TN and Greensboro-Winston Salem-High Point, NC areas were required to submit a 10-year maintenance plan under section 110(a)(1) of the CAA and the Phase 1 Rule.


Local Navigation


Jump to main content.