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Notes for the:
1997 8-Hr Ozone and Previous 1-Hr Ozone Nonattainment and Maintenance Areas Report
On June 8, 2007, the United States Court of Appeals vacated the Subpart 1 portion of the Phase 1 Rule (Court Order). The Subpart 1 areas in the Greenbook are listed as "Former Subpart 1" until the reclassification of the areas is finalized. Proposed reclassifications were published on January 16, 2009 ( 74 FR 2936).
8-Hr Ozone classified area designations for the 1997 standard were effective on June 15, 2004. Thirteen (13) 8-Hr EAC areas were designated attainment on April 15, 2008. 1997 PM-2.5 area designations were effective on April 5, 2005. 2006 PM-2.5 area designations are effective on December 14, 2009.
8-hour and 1-hour ozone areas are listed only once in the table. Sometimes this does not give an exact account of what occurred between the 1- and 8-hour areas. Therefore, it is important to read these footnotes. For easy comparison of 8- and 1-hour ozone areas by county, see the Currently Designated 8-Hour and Previous 1-Hour Ozone Areas report.
There are a few counties that are split between 8-hour ozone areas:
- Kern Co, CA is split between the San Joaquin (Serious) and Kern Co (Eastern Kern), CA (Subpart 1) 8-hour ozone areas. The northeastern portion of the county is attainment. The previous 1-hour ozone areas were San Joaquin (Severe-15) and Kern Co (Eastern Kern) (Serious).
- Los Angeles Co, CA is split between Los Angeles South Coast (Severe 17) and Los Angeles-San Bernardino Cos (W Mojave), CA (Antelope Valley) (Moderate) 8-hour ozone areas. Both parts make a whole county. The previous 1-hour ozone areas were Los Angeles South Coast (Extreme) and SE Desert (Severe-17).
- Riverside Co, CA is split between the Los Angeles South Coast (Severe 17) and Riverside Co, (Coachella Valley), CA (Serious) 8-hour ozone areas. The eastern desert portion of the county is attainment. The previous 1-hour ozone areas were Los Angeles South Coast (Extreme) and SE Desert (Severe-17). The previous 1-hour ozone SE Desert (Severe-17) was split into Los Angeles-San Bernardino Cos (W Mojave), CA (Antelope Valley) (Moderate) and Riverside Co, (Coachella Valley), CA (Serious) 8-hour ozone areas.
- San Bernardino Co, CA is split between Los Angeles South Coast (Severe 17) and Los Angeles-San Bernardino Cos (W Mojave), CA (Antelope Valley) (Moderate) 8-hour ozone areas. The previous 1-hour ozone areas were Los Angeles South Coast (Extreme) and SE Desert (Severe-17).
- Solano Co, CA is split between San Francisco (Marginal) and Sacramento (Serious) 8-hour ozone areas. This is the same as the previous 1-hour area. Both parts make a whole county. The previous 1-hour ozone areas were San Francisco (Other) and Sacramento (Severe-15).
- Sutter Co, CA is split between the Sutter Co (Sutter Buttes) (Subpart 1) and Sacramento (Serious) 8-hour ozone areas. The previous 1-hour ozone areas were Yuba City (Section 185A) and Sacramento (Severe-15).
There are a few counties that are split between one or more previous 1-hour ozone nonattainment areas that are now in one 8-hour ozone area:
- Fairfield and Litchfield Cos, CT were in both the New York (Severe-17) and the Greater CT (Serious) previous 1-hour ozone nonattainment areas. Fairfield Co is completely in the New York 8-hour ozone area and Litchfield Co is completely in the Greater CT 8-hour ozone area.
- Hillsborough Co, NH was in both the Boston-Lawrence-Worcester (E.MA), MA-NH (Serious) and the Manchester, NH (Marginal) previous 1-hour nonattainment areas, but is now in the Boston-Manchester-Portsmouth (SE) (Moderate) 8-hour ozone area.
- Rockingham Co, NH was in Boston-Lawrence-Worcester (E. MA), MA-NH (Serious), Manchester, NH (Marginal) and Portsmouth-Dover-Rochester, NH (Serious) previous 1-hour ozone nonattainment areas, but is now in the Boston-Manchester-Portsmouth (SE), NH 8-hour ozone area.
- Orange Co, NY was in both the New York-N. New Jersey-Long Island, NY-NJ-CT (Severe-17) and the Poughkeepsie, NY (Moderate) previous 1-hour ozone nonattainment areas, but is now in the Poughkeepsie, NY (Moderate) 8-hour ozone area.
Due to the fact that this table is structured by area, the following situations are not obvious:
Counties which were part of the 1-hour ozone area, but were not included in the 8-hour ozone area:
- Columbia Co, PA in Scranton-Wilkes-Barre, PA (Marginal)
- Somerset Co, ,PA in Johnstown, PA (Marginal)
- Kennebec Co, ME in Lewiston-Auburn, ME (Moderate)
- Greenup Co, KY in Huntington-Ashland, WY-KY (Moderate)
- Yuba Co and part of Sutter Co, CA in Yuba City, CA (Section 185A) (The only portion of the 1-hour ozone Yuba City area that is nonattainment for the 8-hour ozone standard is Sutter Buttes.)
Several Counties were moved from a 1-hour ozone area to a different 8-hour ozone area. The following are not obvious from reading the table:
- Ocean Co, NJ was moved from the 1-hour ozone New York-N. New Jersey-Long Island, NY-NJ-CT (Severe-17) area to the 8-hour ozone Philadelphia-Wilmin-Atlantic Ci, PA-NJ-MD-DE (Moderate) area.
- Warren Co, NJ was moved from the 1-hour ozone Allentown-Bethlehem-Easton, PA-NJ (Marginal) area to the 8-hour ozone New York-N. New Jersey-Long Island, NY-NJ-CT (Moderate) area.
- Stafford Co, VA was moved from the 1-hour ozone Washington, DC-MD-VA (Severe-15) area to the 8-hour ozone Fredericksburg, VA (Moderate) area.
- Middlesex and New Haven Cos were moved from the 1-hour ozone Greater Conneticutt, CT (Serious) area to the 8-hour ozone New York-N. New Jersey-Long Island, NY-NJ-CT (Moderate) area.
Several counties in New Hampshire and Maine were completely nonattainment for the 1-hour ozone standard, but are only partially nonattainment for the 8-hour ozone standard. The following portions of 1-hour ozone areas were designated attainment for the 8-hour ozone standard:
- Boston-Lawrence-Worcester (E. MA), MA-NH (Serious) [Hillsborough Co (part)]
- East Kern Co, CA (Serious) [Indian Wells Valley planning area]
- Hancock & Waldo Cos, ME (Marginal) [part]
- Huntington-Ashland, WV-KY (Moderate*) [Greenup Co (part)]
- Knox & Lincoln Cos, ME (Moderate*) [part]
- Lewiston-Auburn, ME (Moderate*) [Androscoggin Co (part)]
- Manchester, NH (Marginal) [part]
- Phoenix, AZ (Serious) [Gila River Indian tribe area in Maricopa Co]
- Portland, ME (Moderate) [part]
- Portsmouth-Dover-Rochester, NH (Serious) [Strafford Co (part)]
- San Diego, CA (Serious) [4 tribal reservations]
- Scranton-Wilkes-Barre, PA (Marginal) [Columbia Co]
The design value for Boston-Lawrence-Worcester (E. MA), MA was used for the classification of Boston-Manchester-Portsmouth (SE), NH.
The design value for Washington, DC-MD-VA was used for the classification of Fredericksburg, VA.