Area Designations for 2006 24-Hour Fine Particle (PM2.5) Standards
2006 24-Hour PM2.5 Standards — Region 9 Area Status December 2008 (Not Final)
These are not final designations. The notice outlining these area boundaries never became effective.
This table identifies all counties EPA intended to designate as nonattainment based on 2005-2007 data. Partial counties are identified by a (P). If a county is not listed below, EPA expected it to be designated unclassifiable/attainment.
| State | Area Name | Counties |
|---|---|---|
| American Samoa | Entire Territory is unclassifiable/attainment | |
| Arizona | Nogales, AZ | Santa Cruz (P) |
| California | Chico, CA | Butte (P) |
| Imperial County, CA | Imperial (P) | |
| Los Angeles, CA | Los Angeles (P) Orange Riverside (P) San Bernardino (P) |
|
| Sacramento, CA | El Dorado (P) Placer (P) Sacramento Solano (P) Yolo (P) |
|
| San Francisco Bay Area, CA | Alameda Contra Costa Marin Napa San Francisco San Mateo Santa Clara Solano (P) Sonoma (P) |
|
| San Joaquin Valley, CA | Fresno Kern (P) Kings Madera Merced San Joaquin Stanislaus Tulare |
|
| Yuba City-Marysville, CA | Sutter Yuba (P) |
|
| Guam | Entire Territory is unclassifiable/attainment | |
| Hawaii | Entire State is unclassifiable/attainment | |
| Nevada | Entire State is unclassifiable/attainment | |
| Northern Marianas Islands | Entire Commonwealth is unclassifiable/attainment | |
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