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SIP Status and Information

Status of SIP Requirements for Designated Areas

California Areas by Pollutant
As of 08/28/2016
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)   PM-2.5 (2012)   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
Click to view FR notice
Redesignation
Request Date
Redesignation
Effective Date
Citation
Click to view FR notice
Bakersfield Area Maintenance 11/15/1990 Not Classified 468,092 2015 1 Yes 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 2015 1.2 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 2015 1.7 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 2015   No Data 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 2015   No Data 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 2015 3 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 2015 1.5 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 2015 1.9 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 2015 1.9 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 2015 2 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 2015 1.4 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
(µg/m3)
(entire area)
Meets
NAAQS
SIP
Requirements
Original/Approved
Clean Air
Determination
Effective Date
Citation
Click to view FR notice
Redesignation
Request Date
Redesignation
Effective Date
Citation
Click to view FR notice
Los Angeles County-South Coast Air Basin Nonattainment 12/31/2010   9,436,927 2013-2015 0.1 Yes 6 / 6  
 
   
 

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
Click to view FR notice
Redesignation
Request Date
Redesignation
Effective Date
Citation
Click to view FR notice
Los Angeles-South Coast Air Basin Area Maintenance 11/15/1990   15,799,134 2014-2015 30 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
Click to view FR notice
Redesignation
Request Date
Redesignation
Effective Date
Citation
Click to view FR notice
East Kern County Area Maintenance (NAAQS revoked) 12/10/2001 Serious 141,398 2013-2015 0.097 Yes 27 / 27 06/21/2004
69 FR 21731
  06/21/2004
69 FR 21731
Los Angeles-South Coast Air Basin Area Nonattainment (NAAQS revoked) 11/15/1990 Extreme 15,798,191 2013-2015 0.130 No 41 / 36  
 
   
 
Monterey Bay Area Maintenance (NAAQS revoked) 11/15/1990 Moderate 732,708 2013-2015 0.079 Yes 20 / 11 02/16/2010
74 FR 66916
07/14/1994 03/18/1997
62 FR 2597
Morongo Band of Mission Indians Nonattainment (NAAQS revoked) 11/15/1990 Severe-17 913 2013-2015 0.119 Yes 0 / 0  
 
   
 
Sacramento Metro Area Nonattainment (NAAQS revoked) 11/15/1990 Severe-15 2,336,542 2013-2015 0.101 Yes 71 / 46 11/19/2012
77 FR 64036
   
 
San Diego Area Maintenance (NAAQS revoked) 11/15/1990 Serious 3,095,313 2013-2015 0.094 Yes 33 / 33 07/28/2003
68 FR 37976
12/20/2002 07/28/2003
68 FR 37976
San Francisco-Bay Area Nonattainment (NAAQS revoked) 07/10/1998 Other 6,896,958 2013-2015 0.095 Yes 26 / 23 05/24/2004
69 FR 21717
   
 
San Joaquin Valley Area Nonattainment (NAAQS revoked) 11/15/1990 Extreme 3,830,257 2013-2015 0.116 Yes 36 / 30 08/17/2016
81 FR 46608
   
 
Santa Barbara-Santa Maria-Lompoc Area Maintenance (NAAQS revoked) 11/15/1990 Serious 423,895 2013-2015 0.091 Yes 22 / 22 08/08/2003
68 FR 40789
02/21/2003 08/08/2003
68 FR 40789
Southeast Desert Modified AQMA Area Nonattainment (NAAQS revoked) 11/15/1990 Severe-17 1,194,366 2013-2015 0.120 Yes 42 / 28 05/15/2015
 
   
 
Ventura County Area Nonattainment (NAAQS revoked) 11/15/1990 Severe-15 823,318 2013-2015 0.096 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
Click to view FR notice
Redesignation
Request Date
Redesignation
Effective Date
Citation
Click to view FR notice
Amador and Calaveras Cos. (Central Mountain Cos.) Nonattainment (NAAQS revoked) 06/15/2004 Subpart 2/Moderate 83,669 2013-2015 0.073 Yes 52 / 0 01/02/2013
77 FR 71551
   
 
Chico Nonattainment (NAAQS revoked) 06/15/2004 Subpart 2/Marginal 220,000 2013-2015 0.073 Yes 3 / 0 01/02/2013
77 FR 71551
   
 
Imperial County Area Nonattainment (NAAQS revoked) 06/15/2004 Subpart 2/Moderate 174,528 2013-2015 0.078 Yes 54 / 46 12/22/2014
79 FR 63332
   
 
Kern County (Eastern Kern) Nonattainment (NAAQS revoked) 06/15/2004 Subpart 2/Moderate 95,314 2013-2015 0.083 Yes 52 / 0 01/02/2013
77 FR 71551
   
 
Los Angeles and San Bernardino Counties (Western Mojave Desert) Nonattainment (NAAQS revoked) 06/15/2004 Subpart 2/Severe 15 868,350 2013-2015 0.090 No 109 / 34  
 
   
 
Los Angeles-South Coast Air Basin Area Nonattainment (NAAQS revoked) 06/15/2004 Subpart 2/Extreme 15,717,914 2013-2015 0.102 No 62 / 47  
 
   
 
Mariposa and Tuolumne Cos. (Southern Mountain Counties) Nonattainment (NAAQS revoked) 06/15/2004 Subpart 2/Moderate 73,616 2013-2015 0.075 Yes 52 / 0 01/02/2013
77 FR 71551
   
 
Morongo Band of Mission Indians Nonattainment (NAAQS revoked) 06/15/2004 Subpart 2/Severe 17 913 2013-2015 0.098 No 59 / 0  
 
   
 
Nevada County (Western part) Nonattainment (NAAQS revoked) 06/15/2004 Subpart 2/Moderate 82,393 2013-2015 0.081 Yes 52 / 45 01/02/2013
77 FR 71551
   
 
Pechanga Band of Luiseno Mission Indians of the Pechanga Reservation Maintenance (NAAQS revoked) 06/15/2004 Subpart 2/Severe 17 2,844 2013-2015 0.076 Yes 59 / 0 04/03/2015
80 FR 18120
  04/03/2015
80 FR 18120
Riverside County (Coachella Valley) Area Nonattainment (NAAQS revoked) 06/15/2004 Subpart 2/Severe 15 425,425 2013-2015 0.088 No 61 / 37  
 
   
 
Sacramento Metro Area Nonattainment (NAAQS revoked) 06/15/2004 Subpart 2/Severe 15 2,243,911 2013-2015 0.081 Yes 257 / 96  
 
   
 
San Diego Maintenance (NAAQS revoked) 06/15/2004 Subpart 2/Moderate 3,093,459 2013-2015 0.079 Yes 53 / 1 07/05/2013
78 FR 33230
12/28/2012 07/05/2013
78 FR 33230
San Francisco Bay Area Nonattainment (NAAQS revoked) 06/15/2004 Subpart 2/Marginal 6,970,997 2013-2015 0.073 Yes 3 / 0  
 
   
 
San Joaquin Valley Area Nonattainment (NAAQS revoked) 06/15/2004 Subpart 2/Extreme 3,842,586 2013-2015 0.093 No 62 / 59  
 
   
 
Sutter County (part) (Sutter Buttes) Nonattainment (NAAQS revoked) 06/15/2004 Subpart 2/Marginal 33 2013-2015 0.073 Yes 3 / 0 01/02/2013
77 FR 71551
   
 
Ventura County (part) Area Nonattainment (NAAQS revoked) 06/15/2004 Subpart 2/Serious 823,360 2013-2015 0.077 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
Click to view FR notice
Redesignation
Request Date
Redesignation
Effective Date
Citation
Click to view FR notice
Calaveras County Nonattainment 07/20/2012 Marginal 45,578 2013-2015 0.073 Yes 3 / 0 06/03/2016
81 FR 26697
   
 
Chico (Butte County) Nonattainment 07/20/2012 Marginal 220,000 2013-2015 0.073 Yes 3 / 0 06/03/2016
81 FR 26697
   
 
Imperial County Nonattainment 07/20/2012 Moderate 174,528 2013-2015 0.078 No 54 / 0  
 
   
 
Kern County (Eastern Kern) Nonattainment 07/20/2012 Moderate 95,176 2013-2015 0.083 No 54 / 0  
 
   
 
Los Angeles-San Bernardino Counties (West Mojave Desert) Nonattainment 07/20/2012 Severe 15 868,380 2013-2015 0.090 No 106 / 0  
 
   
 
Los Angeles-South Coast Air Basin Nonattainment 07/20/2012 Extreme 15,719,485 2013-2015 0.102 No 59 / 0  
 
   
 
Mariposa County Nonattainment 07/20/2012 Moderate 18,251 2013-2015 0.075 Yes 54 / 0  
 
   
 
Morongo Band of Mission Indians Nonattainment 07/20/2012 Serious 913 2013-2015 0.098 No 52 / 0  
 
   
 
Nevada County (Western part) Nonattainment 07/20/2012 Moderate 82,107 2013-2015 0.081 No 54 / 0  
 
   
 
Pechanga Band of Luiseno Mission Indians of the Pechanga Reservation Nonattainment 07/20/2012 Moderate 2,844 2013-2015 0.076 No 52 / 0  
 
   
 
Riverside County (Coachella Valley) Nonattainment 07/20/2012 Severe 15 425,806 2013-2015 0.088 No 58 / 0  
 
   
 
Sacramento Metro Nonattainment 07/20/2012 Severe 15 2,241,057 2013-2015 0.081 No 250 / 46  
 
   
 
San Diego County Nonattainment 07/20/2012 Moderate 3,095,199 2013-2015 0.079 No 54 / 0  
 
   
 
San Francisco Bay Area Nonattainment 07/20/2012 Marginal 6,973,020 2013-2015 0.073 Yes 3 / 0 06/03/2016
81 FR 26697
   
 
San Joaquin Valley Nonattainment 07/20/2012 Extreme 3,842,365 2013-2015 0.093 No 59 / 0  
 
   
 
San Luis Obispo (Eastern San Luis Obispo) Nonattainment 07/20/2012 Marginal 1,649 2013-2015 0.073 Yes 3 / 0  
 
   
 
Tuscan Buttes Nonattainment 07/20/2012 Marginal 0 2013-2015 0.074 Yes 3 / 0 06/03/2016
81 FR 26697
   
 
Ventura County Nonattainment 07/20/2012 Serious 823,262 2013-2015 0.077 No 53 / 46  
 
   
 

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
Click to view FR notice
Redesignation
Request Date
Redesignation
Effective Date
Citation
Click to view FR notice
Coso Junction Maintenance 11/15/1990 Moderate 7,333 2013-2015   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 2013-2015   Yes 4 / 3  
 
   
 
Imperial County; Imperial Valley planning area Nonattainment 11/15/1990 Serious 146,905 2013-2015   No 4 / 0  
 
   
 
Indian Wells Maintenance 11/15/1990 Moderate 15,449 2013-2015   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 2013-2015   No 4 / 2  
 
   
 
Mono County; Mammoth Lake planning area Maintenance 11/15/1990 Moderate 7,133 2013-2015   Yes 3 / 2 11/04/2015
80 FR 60049
09/11/1991 11/04/2015
80 FR 60049
Mono County; Mono Basin Nonattainment 12/29/1993 Moderate 285 2013-2015   No 3 / 0  
 
   
 
Riverside County; Coachella Valley planning area Nonattainment 11/15/1990 Serious 257,794 2013-2015   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 2013-2015   No 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 2013-2015   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 2013-2015   No 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 2013-2015   No 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 2013-2015   No 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
(µg/m3)
(entire area)
Meets
NAAQS
SIP
Requirements
Original/Approved
Clean Air
Determination
Effective Date
Citation
Click to view FR notice
Redesignation
Request Date
Redesignation
Effective Date
Citation
Click to view FR notice
Los Angeles-South Coast Air Basin Nonattainment 04/05/2005 Moderate 15,716,335 2013-2015   Insufficient Data 6 / 4 08/24/2016
81 FR 48350
   
 
San Joaquin Valley Nonattainment 04/05/2005 Serious 3,842,165 2013-2015 22.2 No 6 / 3  
 
   
 

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
(µg/m3)
(entire area)
Meets
NAAQS
SIP
Requirements
Original/Approved
Clean Air
Determination
Effective Date
Citation
Click to view FR notice
Redesignation
Request Date
Redesignation
Effective Date
Citation
Click to view FR notice
Chico Nonattainment 12/14/2009 Moderate 217,626 2013-2015 29 Yes 6 / 1 10/10/2013
78 FR 55225
   
 
Imperial County Nonattainment 12/14/2009 Moderate 154,061 2013-2015 33 Yes 6 / 0  
 
   
 
Los Angeles-South Coast Air Basin Nonattainment 12/14/2009 Serious 15,716,242 2013-2015   Insufficient Data 7 / 2  
 
   
 
Sacramento Nonattainment 12/14/2009 Moderate 2,206,060 2013-2015 35 Yes 9 / 2 08/14/2013
78 FR 42018
   
 
San Francisco Bay Area Nonattainment 12/14/2009 Moderate 6,971,067 2013-2015 30 Yes 6 / 1 02/08/2013
78 FR 1760
   
 
San Joaquin Valley Nonattainment 12/14/2009 Serious 3,842,165 2013-2015 79 No 7 / 1  
 
   
 
Yuba City-Marysville Maintenance 12/14/2009 Moderate 164,955 2013-2015 27 Yes 6 / 5 02/11/2013
78 FR 2211
05/23/2013 01/08/2015
79 FR 72981

California PM-2.5 (2012) 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
(µg/m3)
(entire area)
Meets
NAAQS
SIP
Requirements
Original/Approved
Clean Air
Determination
Effective Date
Citation
Click to view FR notice
Redesignation
Request Date
Redesignation
Effective Date
Citation
Click to view FR notice
Imperial County Nonattainment 04/15/2015 Moderate 154,061 2013-2015 13.1 No 0 / 0  
 
   
 
Los Angeles-South Coast Air Basin Nonattainment 04/15/2015 Moderate 15,716,242 2013-2015   Insufficient Data 0 / 0  
 
   
 
Plumas County Nonattainment 04/15/2015 Moderate 5,843 2013-2015 14.9 No 0 / 0  
 
   
 
San Joaquin Valley Nonattainment 04/15/2015 Moderate 3,842,165 2013-2015 22.2 No 0 / 0  
 
   
 

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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