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SIP Status and Information

Status of SIP Requirements for Designated Areas

Maryland Areas by Pollutant
As of 12/28/2014
View Nonattainment Contacts


Jump to Maryland 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)   



Maryland 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)
Baltimore Area Maintenance 11/15/1990 Moderate <= 12.7ppm 15,455       4 / 4 12/15/1995
60 FR 55321
09/20/1995 12/15/1995
60 FR 55321
Washington Area Maintenance 11/15/1990 Moderate <= 12.7ppm 843,775 2013 3.1 Yes 4 / 4 03/15/1996
61 FR 2931
10/12/1995 03/15/1996
61 FR 2931

Maryland Lead (1978) Areas     Return to map    

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No designated areas for this pollutant.

Maryland Lead (2008) Areas     Return to map    

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No designated areas for this pollutant.

Maryland NO2 (1971) Areas     Return to map    

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No designated areas for this pollutant.

Maryland 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)
Baltimore Area Revoked NAAQS 11/15/1990 Severe-15 2,662,691 2011-2013 0.118 Yes 29 / 28 07/12/2012
77 FR 34810
   
 
Kent County and Queen Anne's County Area Maintenance 01/06/1992 Marginal 67,995 2011-2013 0.105 Yes 7 / 7 03/20/1995
60 FR 3349
02/09/2004 11/22/2004
69 FR 61766
Philadelphia-Wilmington-Trenton Area Revoked NAAQS 11/15/1990 Severe-15 101,108 2011-2013 0.107 Yes 29 / 28 08/25/2008
73 FR 43360
   
 
Washington Area Revoked NAAQS 11/15/1990 Severe-15 2,303,870 2011-2013 0.107 Yes 27 / 26 08/25/2008
73 FR 43360
   
 

Maryland 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)
Baltimore Area Nonattainment 06/15/2004 Subpart 2/Serious 2,662,691 2011-2013 0.085 No 59 / 50  
 
   
 
Kent and Queen Anne's Counties Area Maintenance 06/15/2004 Subpart 2/Marginal 67,995 2011-2013 0.080 Yes 3 / 2 01/22/2007
71 FR 76920
05/19/2006 01/22/2007
71 FR 76920
Philadelphia-Wilmington-Atlantic City Area Nonattainment 06/15/2004 Subpart 2/Moderate 101,108 2011-2013   Insufficient Data 53 / 50 04/25/2012
77 FR 17341
   
 
Washington Area Nonattainment 06/15/2004 Subpart 2/Moderate 2,303,870 2011-2013   Insufficient Data 53 / 49 03/29/2012
77 FR 11739
   
 
OTR (Rest of State)               49 / 44  
 
   
 

Maryland 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)
Baltimore Nonattainment 07/20/2012 Moderate 2,662,691 2011-2013 0.085 No 0 / 0  
 
   
 
Philadelphia-Wilmington-Atlantic City Nonattainment 07/20/2012 Marginal 101,108 2011-2013 0.084 No 0 / 0  
 
   
 
Washington Nonattainment 07/20/2012 Marginal 2,303,870 2011-2013 0.081 No 0 / 0  
 
   
 
OTR               0 / 0  
 
   
 

Maryland PM-10 (1987) Areas     Return to map    

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No designated areas for this pollutant.

Maryland 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)
Baltimore Maintenance 04/05/2005 Moderate 2,662,691 2011-2013 10.5 Yes 6 / 1 06/21/2012
77 FR 30208
12/23/2013 12/16/2014
79 FR 75031
Martinsburg-Hagerstown Maintenance 04/05/2005 Moderate 147,430 2011-2013 10.7 Yes 6 / 1 02/09/2012
77 FR 1411
12/23/2013 12/16/2014
79 FR 75035
Washington Maintenance 04/05/2005 Moderate 2,215,133 2011-2013 10.1 Yes 6 / 1 02/09/2012
77 FR 1411
07/17/2013 11/05/2014
79 FR 60081

Maryland PM-2.5 (2006) Areas     Return to map    

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No designated areas for this pollutant.

Maryland SO2 (1971) Areas     Return to map    

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No designated areas for this pollutant.

Maryland 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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