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Status of SIP Requirements for Designated Areas

California Areas by Pollutant
As of 07/27/2014
View Nonattainment Contacts


Jump to California section for:  CO (1971)   Lead (1978)   Lead (2008)   NO2 (1971)   Ozone-1Hr (1979)   Ozone-8Hr (1997)   Ozone-8Hr (2008)   PM-10 (1987)   PM-2.5 (1997)   PM-2.5 (2006)   SO2 (1971)   SO2 (2010)   


California CO (1971) Areas    Return to map
 
Click on the Area name
to view SIP Requirements


Area
Status Designation
Date
Classification 2010
Population
(state portion)
Meets NAAQS
Basis
Design Value
Annual
(ppm)
(entire area)
Meets
NAAQS
SIP
Requirements
Original/Approved
Clean Air
Determination
Effective Date
Citation
(link to GPO website)
Redesignation
Request Date
Redesignation
Effective Date
Citation
(link to GPO website)
Bakersfield Area Maintenance 11/15/1990 Not Classified 468,092       1 / 0 06/01/1998
63 FR 15305
07/03/1996 06/01/1998
63 FR 15305
Chico Area Maintenance 11/15/1990 Moderate <= 12.7ppm 86,963 2012 1.7 Yes 4 / 3 06/01/1998
63 FR 15305
07/03/1996 06/01/1998
63 FR 15305
Fresno Area Maintenance 11/15/1990 Moderate > 12.7ppm 631,483 2012 2 Yes 6 / 5 06/01/1998
63 FR 15305
07/03/1996 06/01/1998
63 FR 15305
Lake Tahoe North Shore Area Maintenance 11/15/1990 Not Classified 16,132       0 / 0 06/01/1998
63 FR 15305
07/03/1996 06/01/1998
63 FR 15305
Lake Tahoe South Shore Area Maintenance 11/15/1990 Moderate <= 12.7ppm 43,110       4 / 3 06/01/1998
63 FR 15305
07/03/1996 06/01/1998
63 FR 15305
Los Angeles-South Coast Air Basin Area Maintenance 11/15/1990 Serious 15,799,134 2012 3.9 Yes 7 / 7 06/11/2007
72 FR 26718
02/24/2006 06/11/2007
72 FR 26718
Modesto Area Maintenance 11/15/1990 Moderate <= 12.7ppm 320,707 2012 2.1 Yes 4 / 3 06/01/1998
63 FR 15305
07/03/1996 06/01/1998
63 FR 15305
Sacramento Area Maintenance 11/15/1990 Moderate <= 12.7ppm 1,530,116 2012 2.1 Yes 4 / 3 06/01/1998
63 FR 15305
07/03/1996 06/01/1998
63 FR 15305
San Diego Area Maintenance 11/15/1990 Moderate <= 12.7ppm 2,909,194 2012 2.1 Yes 4 / 3 06/01/1998
63 FR 15305
07/03/1996 06/01/1998
63 FR 15305
San Francisco-Oakland-San Jose Area Maintenance 11/15/1990 Moderate <= 12.7ppm 4,296,499 2012 2.4 Yes 4 / 3 06/01/1998
63 FR 15305
07/03/1996 06/01/1998
63 FR 15305
Stockton Area Maintenance 11/15/1990 Moderate <= 12.7ppm 373,545 2012 1.5 Yes 4 / 3 06/01/1998
63 FR 15305
07/03/1996 06/01/1998
63 FR 15305

California Lead (1978) Areas    Return to map    

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No designated areas for this pollutant.

California Lead (2008) Areas    Return to map    

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Click on the Area name
to view SIP Requirements


Area
Status Designation
Date
Classification 2010
Population
(state portion)
Meets NAAQS
Basis
Design Value
Annual
(g/m)
(entire area)
Meets
NAAQS
SIP
Requirements
Original/Approved
Clean Air
Determination
Effective Date
Citation
(link to GPO website)
Redesignation
Request Date
Redesignation
Effective Date
Citation
(link to GPO website)
Los Angeles County-South Coast Air Basin Nonattainment 12/31/2010   9,436,927 2010-2012 0.46 No 1 / 1  
 
   
 

California NO2 (1971) Areas    Return to map    

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Click on the Area name
to view SIP Requirements


Area
Status Designation
Date
Classification 2010
Population
(state portion)
Meets NAAQS
Basis
Design Value
Annual
(ppb)
(entire area)
Meets
NAAQS
SIP
Requirements
Original/Approved
Clean Air
Determination
Effective Date
Citation
(link to GPO website)
Redesignation
Request Date
Redesignation
Effective Date
Citation
(link to GPO website)
Los Angeles-South Coast Air Basin Area Maintenance 11/15/1990 Primary 15,799,134 2011-2012 22 Yes 0 / 0 09/22/1998
63 FR 39747
02/05/1997 09/22/1998
63 FR 39747

California Ozone-1Hr (1979) Areas    Return to map    

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Click on the Area name
to view SIP Requirements


Area
Status Designation
Date
Classification 2010
Population
(state portion)
Meets NAAQS
Basis
Design Value
Annual
(ppm)
(entire area)
Meets
NAAQS
SIP
Requirements
Original/Approved
Clean Air
Determination
Effective Date
Citation
(link to GPO website)
Redesignation
Request Date
Redesignation
Effective Date
Citation
(link to GPO website)
East Kern County Area Maintenance 12/10/2001 Serious 141,398 2010-2012 0.092 Yes 27 / 27 06/21/2004
69 FR 21731
  06/21/2004
69 FR 21731
Los Angeles-South Coast Air Basin Area Revoked NAAQS 11/15/1990 Extreme 15,798,191 2010-2012 0.140 No 41 / 34  
 
   
 
Monterey Bay Area Maintenance 11/15/1990 Moderate 732,708 2010-2012 0.084 Yes 20 / 11 02/16/2010
74 FR 66916
07/14/1994 03/18/1997
62 FR 2597
Morongo Band of Mission Indians Revoked NAAQS 11/15/1990 Severe-17 913       0 / 0  
 
   
 
Sacramento Metro Area Revoked NAAQS 11/15/1990 Severe-15 2,336,542 2010-2012 0.121 Yes 71 / 44 11/19/2012
77 FR 64036
   
 
San Diego Area Maintenance 11/15/1990 Serious 3,095,313 2010-2012 0.101 Yes 33 / 33 07/28/2003
68 FR 37976
12/20/2002 07/28/2003
68 FR 37976
San Francisco-Bay Area Revoked NAAQS 07/10/1998 Other 6,896,958 2010-2012 0.100 Yes 26 / 23 05/24/2004
69 FR 21717
   
 
San Joaquin Valley Area Revoked NAAQS 11/15/1990 Extreme 3,830,257 2010-2012 0.130 No 36 / 17  
 
   
 
Santa Barbara-Santa Maria-Lompoc Area Maintenance 11/15/1990 Serious 423,895 2010-2012 0.093 Yes 22 / 22 08/08/2003
68 FR 40789
02/21/2003 08/08/2003
68 FR 40789
Southeast Desert Modified AQMA Area Revoked NAAQS 11/15/1990 Severe-17 1,194,366 2010-2012 0.124 Yes 42 / 28  
 
   
 
Ventura County Area Revoked NAAQS 11/15/1990 Severe-15 823,318 2010-2012 0.100 Yes 29 / 20 07/27/2009
74 FR 25153
   
 

California Ozone-8Hr (1997) Areas    Return to map    

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Click on the Area name
to view SIP Requirements


Area
Status Designation
Date
Classification 2010
Population
(state portion)
Meets NAAQS
Basis
Design Value
Annual
(ppm)
(entire area)
Meets
NAAQS
SIP
Requirements
Original/Approved
Clean Air
Determination
Effective Date
Citation
(link to GPO website)
Redesignation
Request Date
Redesignation
Effective Date
Citation
(link to GPO website)
Amador and Calaveras Cos. (Central Mountain Cos.) Nonattainment 06/15/2004 Subpart 2/Moderate 83,669 2010-2012 0.076 Yes 52 / 0 01/02/2013
77 FR 71551
   
 
Chico Nonattainment 06/15/2004 Subpart 2/Marginal 220,000 2010-2012 0.077 Yes 3 / 0 01/02/2013
77 FR 71551
   
 
Imperial County Area Nonattainment 06/15/2004 Subpart 2/Moderate 174,528 2010-2012 0.075 Yes 54 / 1 01/04/2010
74 FR 63309
   
 
Kern County (Eastern Kern) Nonattainment 06/15/2004 Subpart 2/Moderate 95,314 2010-2012 0.079 Yes 52 / 0 01/02/2013
77 FR 71551
   
 
Los Angeles and San Bernardino Counties (Western Mojave Desert) Nonattainment 06/15/2004 Subpart 2/Severe 15 868,350 2010-2012 0.097 No 107 / 34  
 
   
 
Los Angeles-South Coast Air Basin Area Nonattainment 06/15/2004 Subpart 2/Extreme 15,717,914 2010-2012 0.106 No 62 / 45  
 
   
 
Mariposa and Tuolumne Cos. (Southern Mountain Counties) Nonattainment 06/15/2004 Subpart 2/Moderate 73,616 2010-2012 0.078 Yes 52 / 0 01/02/2013
77 FR 71551
   
 
Morongo Band of Mission Indians Nonattainment 06/15/2004 Subpart 2/Severe 17 913       59 / 0  
 
   
 
Nevada County (Western part) Nonattainment 06/15/2004 Subpart 2/Moderate 82,393 2010-2012 0.078 Yes 52 / 12 01/02/2013
77 FR 71551
   
 
Riverside County (Coachella Valley) Area Nonattainment 06/15/2004 Subpart 2/Severe 15 425,425 2010-2012 0.092 No 61 / 37  
 
   
 
Sacramento Metro Area Nonattainment 06/15/2004 Subpart 2/Severe 15 2,243,911 2010-2012 0.095 No 257 / 56  
 
   
 
San Diego Maintenance 06/15/2004 Subpart 2/Moderate 3,093,459 2010-2012 0.081 Yes 53 / 1 07/05/2013
78 FR 33230
12/28/2012 07/05/2013
78 FR 33230
San Francisco Bay Area Nonattainment 06/15/2004 Subpart 2/Marginal 6,970,997 2010-2012 0.073 Yes 3 / 0  
 
   
 
San Joaquin Valley Area Nonattainment 06/15/2004 Subpart 2/Extreme 3,842,586 2010-2012 0.098 No 62 / 58  
 
   
 
Sutter County (part) (Sutter Buttes) Nonattainment 06/15/2004 Subpart 2/Marginal 33 2010-2012 0.073 Yes 3 / 0 01/02/2013
77 FR 71551
   
 
Ventura County (part) Area Nonattainment 06/15/2004 Subpart 2/Serious 823,360 2010-2012 0.081 Yes 60 / 39 01/02/2013
77 FR 71551
   
 

California Ozone-8Hr (2008) Areas    Return to map    

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Click on the Area name
to view SIP Requirements


Area
Status Designation
Date
Classification 2010
Population
(state portion)
Meets NAAQS
Basis
Design Value
Annual
(ppm)
(entire area)
Meets
NAAQS
SIP
Requirements
Original/Approved
Clean Air
Determination
Effective Date
Citation
(link to GPO website)
Redesignation
Request Date
Redesignation
Effective Date
Citation
(link to GPO website)
Calaveras County Nonattainment 07/20/2012 Marginal 45,578 2010-2012 0.076 No 0 / 0  
 
   
 
Chico (Butte County) Nonattainment 07/20/2012 Marginal 220,000 2010-2012 0.077 No 0 / 0  
 
   
 
Imperial County Nonattainment 07/20/2012 Marginal 174,528 2010-2012 0.081 No 0 / 0  
 
   
 
Kern County (Eastern Kern) Nonattainment 07/20/2012 Marginal 95,176 2010-2012 0.079 No 0 / 0  
 
   
 
Los Angeles-San Bernardino Counties (West Mojave Desert) Nonattainment 07/20/2012 Severe 15 868,380 2010-2012 0.097 No 0 / 0  
 
   
 
Los Angeles-South Coast Air Basin Nonattainment 07/20/2012 Extreme 15,719,485 2010-2012 0.106 No 0 / 0  
 
   
 
Mariposa County Nonattainment 07/20/2012 Marginal 18,251 2010-2012 0.078 No 0 / 0  
 
   
 
Morongo Band of Mission Indians Nonattainment 07/20/2012 Serious 913 2010-2012 0.100 No 0 / 0  
 
   
 
Nevada County (Western part) Nonattainment 07/20/2012 Marginal 82,107 2010-2012 0.078 No 0 / 0  
 
   
 
Pechanga Band of Luiseno Mission Indians of the Pechanga Reservation Nonattainment 07/20/2012 Moderate 2,844 2010-2012 0.088 No 0 / 0  
 
   
 
Riverside County (Coachella Valley) Nonattainment 07/20/2012 Severe 15 425,806 2010-2012 0.092 No 0 / 0  
 
   
 
Sacramento Metro Nonattainment 07/20/2012 Severe 15 2,241,057 2010-2012 0.095 No 0 / 0  
 
   
 
San Diego County Nonattainment 07/20/2012 Marginal 3,095,199 2010-2012 0.081 No 0 / 0  
 
   
 
San Francisco Bay Area Nonattainment 07/20/2012 Marginal 6,973,020 2010-2012 0.073 Yes 0 / 0  
 
   
 
San Joaquin Valley Nonattainment 07/20/2012 Extreme 3,842,365 2010-2012 0.098 No 0 / 0  
 
   
 
San Luis Obispo (Eastern San Luis Obispo) Nonattainment 07/20/2012 Marginal 1,649 2010-2012 0.079 No 0 / 0  
 
   
 
Tuscan Buttes Nonattainment 07/20/2012 Marginal 0 2010-2012 0.076 No 0 / 0  
 
   
 
Ventura County Nonattainment 07/20/2012 Serious 823,262 2010-2012 0.081 No 0 / 0  
 
   
 

California PM-10 (1987) Areas    Return to map    

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Click on the Area name
to view SIP Requirements


Area
Status Designation
Date
Classification 2010
Population
(state portion)
Meets NAAQS
Basis
Design Value
(entire area)
Meets
NAAQS
SIP
Requirements
Original/Approved
Clean Air
Determination
Effective Date
Citation
(link to GPO website)
Redesignation
Request Date
Redesignation
Effective Date
Citation
(link to GPO website)
Coso Junction Maintenance 11/15/1990 Moderate 7,333 2010-2012   No 3 / 0 06/18/2010
75 FR 27944
07/14/2010 10/04/2010
75 FR 54031
East Kern County Area Nonattainment 11/15/1990 Serious 125,950 2010-2012   Insufficient Data 4 / 3  
 
08/19/2003  
 
Imperial County; Imperial Valley planning area Nonattainment 11/15/1990 Serious 146,905 2010-2012   No 4 / 0  
 
   
 
Indian Wells Maintenance 11/15/1990 Moderate 15,449 2010-2012   Yes 3 / 2 06/06/2003
68 FR 24368
  06/06/2003
68 FR 24368
Inyo County; Owens Valley planning area Nonattainment 11/15/1990 Serious 7,333 2010-2012   No 4 / 2  
 
06/11/2008  
 
Mono County; Mammoth Lake planning area Nonattainment 11/15/1990 Moderate 7,133 2010-2012   Yes 3 / 2  
 
09/11/1991  
 
Mono County; Mono Basin Nonattainment 12/29/1993 Moderate 285 2010-2012   No 3 / 0  
 
   
 
Riverside County; Coachella Valley planning area Nonattainment 11/15/1990 Serious 257,794 2010-2012   No 3 / 2  
 
03/29/2010  
 
Riverside, Los Angeles, Orange, and San Bernardino Counties; South Coast Air Basin Maintenance 11/15/1990 Serious 15,799,134 2010-2012   Yes 3 / 3 07/26/2013
78 FR 38223
04/28/2010 07/26/2013
78 FR 38223
Sacramento County Maintenance 01/20/1994 Moderate 1,418,788 2010-2012   Yes 3 / 0 03/18/2002
67 FR 7082
  10/28/2013
78 FR 59261
San Bernardino County (part); excluding Searles Valley Planning area and South Coast Air Basin Nonattainment 01/20/1994 Moderate 237,418 2010-2012   Yes 3 / 0 03/18/2002
67 FR 7082
   
 
San Joaquin Valley Air Basin; Fresno, Kern, Kings, Madera, Merced, San Joaquin, Stanislaus, Tulare Counties Maintenance 11/15/1990 Serious 3,830,257 2010-2012   Insufficient Data 3 / 3 12/12/2008
73 FR 66759
08/19/2003 12/12/2008
73 FR 66759
Trona Nonattainment 11/15/1990 Moderate 4,167 2010-2012   Insufficient Data 3 / 0  
 
   
 

California PM-2.5 (1997) Areas    Return to map    

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Click on the Area name
to view SIP Requirements


Area
Status Designation
Date
Classification 2010
Population
(state portion)
Meets NAAQS
Basis
Design Value
Annual
(g/m)
(entire area)
Meets
NAAQS
SIP
Requirements
Original/Approved
Clean Air
Determination
Effective Date
Citation
(link to GPO website)
Redesignation
Request Date
Redesignation
Effective Date
Citation
(link to GPO website)
Los Angeles-South Coast Air Basin Nonattainment 04/05/2005 Moderate 15,716,335 2010-2012 15.6 No 6 / 4  
 
   
 
San Joaquin Valley Nonattainment 04/05/2005 Moderate 3,842,165 2010-2012 19.0 No 6 / 4  
 
   
 

California PM-2.5 (2006) Areas    Return to map
Area designated nonattainment for the 24-hour standard.    

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Click on the Area name
to view SIP Requirements


Area
Status Designation
Date
Classification 2010
Population
(state portion)
Meets NAAQS
Basis
Design Value
24-Hr
(g/m)
(entire area)
Meets
NAAQS
SIP
Requirements
Original/Approved
Clean Air
Determination
Effective Date
Citation
(link to GPO website)
Redesignation
Request Date
Redesignation
Effective Date
Citation
(link to GPO website)
Chico Nonattainment 12/14/2009 Moderate 217,626 2010-2012 34 Yes 6 / 1 10/10/2013
78 FR 55225
   
 
Imperial County Nonattainment 12/14/2009 Moderate 154,061 2010-2012   Insufficient Data 6 / 0  
 
   
 
Los Angeles-South Coast Air Basin Nonattainment 12/14/2009 Moderate 15,716,242 2010-2012 37 No 7 / 0  
 
   
 
Sacramento Nonattainment 12/14/2009 Moderate 2,206,060 2010-2012 31 Yes 9 / 0 08/14/2013
78 FR 42018
   
 
San Francisco Bay Area Nonattainment 12/14/2009 Moderate 6,971,067 2010-2012 32 Yes 6 / 1 02/08/2013
78 FR 1760
   
 
San Joaquin Valley Nonattainment 12/14/2009 Moderate 3,842,165 2010-2012 59 No 7 / 0  
 
   
 
Yuba City-Marysville Nonattainment 12/14/2009 Moderate 164,955 2010-2012 26 Yes 6 / 0 02/11/2013
78 FR 2211
05/23/2013  
 

California SO2 (1971) Areas    Return to map    

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No designated areas for this pollutant.

California SO2 (2010) Areas    Return to map    

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No designated areas for this pollutant.
 
We have made our best effort to ensure that the data contained in these reports is accurate. We note that there may be brief delays in updating the reports as we receive new state submissions and we take rulemaking action on plans. In order to assist us in providing accurate information, we request that you contact us by clicking on the "Contact Us" link near the top of this page with any comments regarding or corrections to the posted information, including concerns about whether the entries reflect the most recent status.

Current and historical design value data can be found on the EPA Air Trends website and the EPA Green Book contains comprehensive nonattainment area, designation status, and historical information.

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