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Electronic Code of Federal Regulations

e-CFR data is current as of December 3, 2019

Title 40Chapter ISubchapter CPart 81Subpart C → §81.321


Title 40: Protection of Environment
PART 81—DESIGNATION OF AREAS FOR AIR QUALITY PLANNING PURPOSES
Subpart C—Section 107 Attainment Status Designations


§81.321   Maryland.

Maryland—TSP

Designated areaDoes not meet primary standardsDoes not meet secondary standardsCannot be classifiedBetter than national standards
Metropolitan Baltimore Intrastate AQCR:
(a) Baltimore City:
#111 Zones 61, 65-681X
#112 Zone 72X
#113 Zones 76-80X
#117 Zones 94-100, 102, 103, 105-11X
#118 Zones 114-137X
#119 Zones 138, 140, 144, 146, 149X
Zones 139, 141-143, 145, 147, 150-56X
#120 Zones 157-66X
#121 Zones 168-70, 172, 176-78, 180, 181X
Zones 167, 171, 173-75, 179, 182X
#123 Zones 187-90X
#Zones 193-198X
Zones 191, 192X
#125 Zones 199-203X
#126 Zone 207X
Zones 204-06X
(b) Baltimore County:
#325 Zones 417, 418, 420, 421X
#326 Zones 428, 431X
#328 Zone 446X
#329 Zones 449, 453-58X
Zones 450-52, 459X
#330 Zones 461, 462X
Zones 460, 463-68X
#331 Zones 469-72X
(c) Anne Arundel County:
#201 Zones 208, 209X
#203 Zones 221-28X
#204 Zones 230X
(d) Remainder of AQCRX
Cumberland-Keyser Interstate AQCR:
(a) Election District No. 8, Luke, MDX
(b) Remainder AQCRX
Central Maryland Interstate AQCRX
National Capital Interstate AQCRX
Southern Maryland Intrastate AQCRX
Eastern Shore Intrastate AQCRX

1Regional Planning Districts—defined by the Baltimore Regional Planning Council, Maps showing Districts and non-attainment areas available for inspection at the offices of: EPA, Region III, 6th and Walnut Streets, Phila., Pa. 19106; Md. Bureau of Air Quality and Noise Control, 201 West Preston Street, Baltimore, Md. 21201.

Maryland—1971 Sulfur Dioxide NAAQS

[Primary and Secondary]

Designated areaDoes not meet primary standardsDoes not meet secondary standardsCannot be classifiedBetter than national standards
Cumberland-Keyser Interstate AQCR, Election District No. 8, Luke, MdX
Remainder of StateX

Maryland—2010 Sulfur Dioxide NAAQS

[Primary]

Designated area13Designation
Date2Type
Anne Arundel County and Baltimore County, MD19/12/16Nonattainment.
Anne Arundel County (part)
Portions of Anne Arundel County that are within 26.8 kilometers of Herbert A. Wagner's Unit 3 stack, which is located at 39.17765 N. latitude, 76.52752 W. longitude
Baltimore County (part)
Portions of Baltimore County that are within 26.8 kilometers of Herbert A. Wagner's Unit 3 stack, which is located at 39.17765 N. latitude, 76.52752 W. longitude
Anne Arundel County (part)Attainment/Unclassifiable.
Remainder of County
Baltimore City, MD9/12/16Attainment/Unclassifiable.
Baltimore County (part)Attainment/Unclassifiable.
Remainder of County
Calvert CountyAttainment/Unclassifiable.
Caroline CountyAttainment/Unclassifiable.
Carroll CountyAttainment/Unclassifiable.
Cecil CountyAttainment/Unclassifiable.
Charles CountyAttainment/Unclassifiable.
Dorchester CountyAttainment/Unclassifiable.
Frederick CountyAttainment/Unclassifiable.
Garrett CountyAttainment/Unclassifiable.
Harford CountyAttainment/Unclassifiable.
Howard CountyAttainment/Unclassifiable.
Kent CountyAttainment/Unclassifiable.
Montgomery CountyAttainment/Unclassifiable.
Prince George's CountyAttainment/Unclassifiable.
Queen Anne's CountyAttainment/Unclassifiable.
Somerset CountyAttainment/Unclassifiable.
St. Mary's CountyAttainment/Unclassifiable.
Talbot CountyAttainment/Unclassifiable.
Washington CountyAttainment/Unclassifiable.
Wicomico CountyAttainment/Unclassifiable.
Worcester CountyAttainment/Unclassifiable.

1Includes any Indian country in each county or area, unless otherwise specified. EPA is not determining the boundaries of any area of Indian country in this table, including any area of Indian country located in the larger designation area. The inclusion of any Indian country in the designation area is not a determination that the state has regulatory authority under the Clean Air Act for such Indian country.

2This date is April 9, 2018, unless otherwise noted.

3Allegany County will be designated by December 31, 2020.

Maryland—Carbon Monoxide

Designated areaDesignationClassification
Date1TypeDate1Type
Baltimore Area
Baltimore City (part)
Regional Planning District No. 118 (generally corresponding to the Central Business District)12/15/95Attainment
Washington Area
Montgomery County (part)
Election Districts 4, 7, 13Attainment
Prince George's County (part)
Election Districts 2, 6, 12, 16, 17, 18Attainment
AQCR 047 National Capital Interstate (Remainder of)Unclassifiable/Attainment
Montgomery County (part)
Remainder of county
Prince George's County (part)
Remainder of County
AQCR 112 Central Maryland IntrastateUnclassifiable/Attainment
Frederick County
AQCR 113 Cumberland-Keyser InterstateUnclassifiable/Attainment
Allegany County
Garrett County
Washington County
AQCR 114 Eastern Shore InterstateUnclassifiable/Attainment
Caroline County
Cecil County
Dorchester County
Kent County
Queen Anne's County
Kent County12/22/06Attainment
Queen Anne's County12/22/06Attainment
Somerset County
Talbot County
Wicomico County
Worcester County
AQCR 115 Metro. Baltimore Intrastate (Remainder of)Unclassifiable/Attainment
Anne Arundel County
Baltimore City (part)
Remainder of City
Baltimore County
Carroll County
Harford County
Howard County
AQCR 116 Southern Maryland IntrastateUnclassifiable/Attainment
Calvert County
Charles County
St. Mary's County

1This date is November 15, 1990, unless otherwise noted.

Maryland—Ozone (1-Hour Standard)2

Designated area Designation Classification
Date1 Type Date1 Type
Baltimore Area:
Anne Arundel County11/15/90Nonattainment11/15/90Severe-15.
Baltimore
City of Baltimore11/15/90Nonattainment11/15/90Severe-15.
Baltimore County11/15/90Nonattainment11/15/90Severe-15.
Carroll County11/15/90Nonattainment11/15/90Severe-15.
Harford County11/15/90Nonattainment11/15/90Severe-15.
Howard County11/15/90Nonattainment11/15/90Severe-15.
Kent County and Queen Anne's County Area:
Kent County10/21/04Attainment
Queen Anne's County10/21/04Attainment
Philadelphia-Wilmington-Trenton Area:
Cecil County11/15/90Nonattainment11/15/90Severe-15.
Washington, DC Area:
Calvert CountyNonattainment3/25/03Severe
Charles CountyNonattainment3/25/03Severe
Frederick CountyNonattainment3/25/03Severe
Montgomery CountyNonattainment3/25/03Severe
Prince George's CountyNonattainment3/25/03Severe
AQCR 113 Cumberland-Keyser InterstateUnclassifiable/Attainment
Allegany County
Garrett County
Washington County
AQCR 114 Eastern Shore Interstate (Remainder of)Unclassifiable/Attainment
Caroline County
Dorchester County
Somerset County
Talbot County
Wicomico County
Worcester County
AQCR 116 Southern Maryland Intrastate (Remainder of)Unclassifiable/Attainment
St. Mary's County

1This date is October 18, 2000, unless otherwise noted.

2The 1-hour ozone standard is revoked effective June 15, 2005 for all areas in Maryland except the Washington Co. area where it is revoked effective April 15, 2009.

Maryland—1997 Annual PM2.5 NAAQS

[Primary and Secondary]

Designated areaDesignationaClassification
Date1TypeDate2Type
Baltimore, MD:
Anne Arundel County12/16/14Attainment
Baltimore County12/16/14Attainment
Carroll County12/16/14Attainment
Harford County12/16/14Attainment
Howard County12/16/14Attainment
City of Baltimore12/16/14Attainment
Martinsburg, WV-Hagerstown, MD:
Washington County12/16/14Attainment
Washington, DC-MD-VA:
Charles County10/6/14Attainment
Frederick County10/6/14Attainment
Montgomery County10/6/14Attainment
Prince George's County10/6/14Attainment
AQCR 113 Cumberland-Keyser Interstate:
Allegany CountyUnclassifiable/Attainment.
Garrett CountyUnclassifiable/Attainment.
AQCR 114 Eastern Shore Interstate (remainder of):
Caroline CountyUnclassifiable/Attainment.
Cecil CountyUnclassifiable/Attainment.
Dorchester CountyUnclassifiable/Attainment.
Kent CountyUnclassifiable/Attainment.
Queen Anne's CountyUnclassifiable/Attainment.
Somerset CountyUnclassifiable/Attainment.
Talbot CountyUnclassifiable/Attainment.
Wicomico CountyUnclassifiable/Attainment.
Worcester CountyUnclassifiable/Attainment.
AQCR 116 Southern Maryland Intrastate (remainder of):
Calvert CountyUnclassifiable/Attainment.
St. Mary's CountyUnclassifiable/Attainment.

aIncludes Indian Country located in each county or area, except as otherwise specified.

1This date is 90 days after January 5, 2005, unless otherwise noted.

2This date is July 2, 2014, unless otherwise noted.

Maryland—2012 Annual PM2.5 NAAQS

[Primary]

Designated area1DesignationClassification
Date2TypeDate2Type
AQCR 047 National Capital Interstate (DC-MD-VA) (part):
Montgomery CountyUnclassifiable/Attainment
Prince George's CountyUnclassifiable/Attainment
Metropolitan Baltimore Intrastate AQCR:
Anne Arundel CountyUnclassifiable/Attainment
Baltimore CountyUnclassifiable/Attainment
City of BaltimoreUnclassifiable/Attainment
Carroll CountyUnclassifiable/Attainment
Harford CountyUnclassifiable/Attainment
Howard CountyUnclassifiable/Attainment
AQCR 112 Central Maryland Intrastate:
Frederick CountyUnclassifiable/Attainment
AQCR 113 Cumberland-Keyser Interstate:
Allegany CountyUnclassifiable/Attainment
Garrett CountyUnclassifiable/Attainment
Washington CountyUnclassifiable/Attainment
AQCR 114 Eastern Shore Intrastate:
Caroline CountyUnclassifiable/Attainment
Cecil CountyUnclassifiable/Attainment
Dorchester CountyUnclassifiable/Attainment
Kent CountyUnclassifiable/Attainment
Queen Anne's CountyUnclassifiable/Attainment
Somerset CountyUnclassifiable/Attainment
Talbot CountyUnclassifiable/Attainment
Wicomico CountyUnclassifiable/Attainment
Worcester CountyUnclassifiable/Attainment
AQCR 116 Southern Maryland Intrastate:
Calvert CountyUnclassifiable/Attainment
Charles CountyUnclassifiable/Attainment
St. Mary's CountyUnclassifiable/Attainment

1Includes areas of Indian country located in each county or area, except as otherwise specified.

2This date is April 15, 2015, unless otherwise noted.

Maryland—1997 24-Hour PM2.5 NAAQS

[Primary and Secondary]

Designated areaDesignationaClassification
Date1TypeDateType
AQCR 047 National Capital Interstate (DC-MD-VA) (part):
Montgomery CountyUnclassifiable/Attainment.
Prince George's CountyUnclassifiable/Attainment.
Metropolitan Baltimore Intrastate AQCR:
Anne Arundel CountyUnclassifiable/Attainment.
Baltimore CountyUnclassifiable/Attainment.
City of BaltimoreUnclassifiable/Attainment.
Carroll CountyUnclassifiable/Attainment.
Harford CountyUnclassifiable/Attainment.
Howard CountyUnclassifiable/Attainment.
AQCR 112 Central Maryland Intrastate:
Frederick CountyUnclassifiable/Attainment.
AQCR 113 Cumberland-Keyser Interstate:
Allegany CountyUnclassifiable/Attainment.
Garrett CountyUnclassifiable/Attainment.
Washington CountyUnclassifiable/Attainment.
AQCR 114 Eastern Shore Intrastate:
Caroline CountyUnclassifiable/Attainment.
Cecil CountyUnclassifiable/Attainment.
Dorchester CountyUnclassifiable/Attainment.
Kent CountyUnclassifiable/Attainment.
Queen Anne's CountyUnclassifiable/Attainment.
Somerset CountyUnclassifiable/Attainment.
Talbot CountyUnclassifiable/Attainment.
Wicomico CountyUnclassifiable/Attainment.
Worcester CountyUnclassifiable/Attainment.
AQCR 116 Southern Maryland Intrastate:
Calvert CountyUnclassifiable/Attainment.
Charles CountyUnclassifiable/Attainment.
St. Mary's CountyUnclassifiable/Attainment.

aIncludes Indian Country located in each county or area, except as otherwise specified.

1This date is 90 days after January 5, 2005, unless otherwise noted.

Maryland—2006 24-Hour PM2.5 NAAQS

[Primary and Secondary]

Designated areaDesignationaClassification
Date1TypeDateType
AQCR 047 National Capital Interstate (DC-MD-VA) (part):
Montgomery CountyUnclassifiable/Attainment.
Prince George's CountyUnclassifiable/Attainment.
Metropolitan Baltimore Intrastate AQCR:
Anne Arundel CountyUnclassifiable/Attainment.
Baltimore CountyUnclassifiable/Attainment.
City of BaltimoreUnclassifiable/Attainment.
Carroll CountyUnclassifiable/Attainment.
Harford CountyUnclassifiable/Attainment.
Howard CountyUnclassifiable/Attainment.
AQCR 112 Central Maryland Intrastate:
Frederick CountyUnclassifiable/Attainment.
AQCR 113 Cumberland-Keyser Interstate:
Allegany CountyUnclassifiable/Attainment.
Garrett CountyUnclassifiable/Attainment.
Washington CountyUnclassifiable/Attainment.
AQCR 114 Eastern Shore Intrastate:
Caroline CountyUnclassifiable/Attainment.
Cecil CountyUnclassifiable/Attainment.
Dorchester CountyUnclassifiable/Attainment.
Kent CountyUnclassifiable/Attainment.
Queen Anne's CountyUnclassifiable/Attainment.
Somerset CountyUnclassifiable/Attainment.
Talbot CountyUnclassifiable/Attainment.
Wicomico CountyUnclassifiable/Attainment.
Worcester CountyUnclassifiable/Attainment.
AQCR 116 Southern Maryland Intrastate:
Calvert CountyUnclassifiable/Attainment.
Charles CountyUnclassifiable/Attainment.
St. Mary's CountyUnclassifiable/Attainment.

aIncludes Indian Country located in each county or area, except as otherwise specified.

1This date is 30 days after November 13, 2009, unless otherwise noted.

Maryland—NO2 (1971 Annual Standard)

Designated areaDoes not meet primary standardsCannot be classified or better than national standards
State of MarylandX

Maryland—NO2 (2010 1-Hour Standard)

Designated areaDesignationa
Date1Type
Allegany CountyUnclassifiable/Attainment.
Anne Arundel CountyUnclassifiable/Attainment.
Baltimore CountyUnclassifiable/Attainment.
City of BaltimoreUnclassifiable/Attainment.
Calvert CountyUnclassifiable/Attainment.
Caroline CountyUnclassifiable/Attainment.
Carroll CountyUnclassifiable/Attainment.
Cecil CountyUnclassifiable/Attainment.
Charles CountyUnclassifiable/Attainment.
Dorchester CountyUnclassifiable/Attainment.
Frederick CountyUnclassifiable/Attainment.
Garrett CountyUnclassifiable/Attainment.
Harford CountyUnclassifiable/Attainment.
Howard CountyUnclassifiable/Attainment.
Kent CountyUnclassifiable/Attainment.
Montgomery CountyUnclassifiable/Attainment.
Prince George's CountyUnclassifiable/Attainment.
Queene Anne's CountyUnclassifiable/Attainment.
St. Mary's CountyUnclassifiable/Attainment.
Somerset CountyUnclassifiable/Attainment.
Talbot CountyUnclassifiable/Attainment.
Washington CountyUnclassifiable/Attainment.
Wicomico CountyUnclassifiable/Attainment.
Worchester CountyUnclassifiable/Attainment.

aIncludes Indian Country located in each county or area, except as otherwise specified.

1This date is 90 days after October 31, 2011, unless otherwise noted.

Maryland—1997 8-Hour Ozone NAAQS

[Primary and Secondary]

Designated area DesignationaCategory/classification
Date1Type Date1Type
Baltimore, MD:
Anne Arundel CountyNonattainment(5)Subpart 2/Serious.4
City of BaltimoreNonattainment(5)Subpart 2/Serious.4
Baltimore CountyNonattainment(5)Subpart 2/Serious.4
Carroll CountyNonattainment(5)Subpart 2/Serious.4
Harford CountyNonattainment(5)Subpart 2/Serious.4
Howard CountyNonattainment(5)Subpart 2/Serious.4
Kent and Queen Anne's Area
Kent County1/22/07Attainment
Queen Anne's County1/22/07Attainment
Washington County (Hagerstown), MD:
Washington County   (2)Attainment.
Philadelphia-Wilmin-Atlantic Ci, PA-NJ-MD-DE:
Cecil CountyNonattainmentSubpart 2/Moderate.4
Washington, DC-MD-VA:
Calvert CountyNonattainmentSubpart 2/Moderate.
Charles CountyNonattainmentSubpart 2/Moderate.
Frederick CountyNonattainmentSubpart 2/Moderate.
Montgomery CountyNonattainmentSubpart 2/Moderate.
Prince George's CountyNonattainmentSubpart 2/Moderate.
AQCR 113 Cumberland-Keyser InterstateUnclassifiable/Attainment
Allegany County
Garrett County
AQCR 114 Eastern Shore Interstate (remainder of)Unclassifiable/Attainment
Caroline County
Dorchester County
Somerset County
Talbot County
Wicomico County
Worcester County
AQCR 116 Southern Maryland Intrastate (remainder of)Unclassifiable/Attainment
St. Mary's County

aIncludes Indian Country located in each county or area, except as otherwise specified.

1This date is June 15, 2004, unless otherwise noted.

2Effective April 15, 2008.

3November 22, 2004.

4Attainment date is June 15, 2013.

5Effective March 2, 2012.

Maryland—2008 8-Hour Ozone NAAQS

[Primary and Secondary]

Designated area DesignationClassification
Date1TypeDate1Type
Baltimore, MD:2NonattainmentModerate.
Anne Arundel County
Baltimore County
Baltimore City
Carroll County
Harford County
Howard County
Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE:2Nonattainment6/3/16Marginal.4
Cecil County
Washington, DC-MD-VA:2April 15, 2019Attainment
Calvert County4/15/19Attainment
Charles County4/15/19Attainment
Frederick County4/15/19Attainment
Montgomery County4/15/19Attainment
Prince George's County4/15/19Attainment
AQCR 113 Cumberland-Keyser Interstate3Unclassifiable/Attainment
Allegany County
Garrett County
Washington County
AQCR 114 Eastern Shore Interstate: (remainder)3Unclassifiable/Attainment
Caroline County
Dorchester County
Kent County
Queen Anne's County
Somerset County
Talbot County
Wicomico County
Worcester County
AQCR 116 Southern Maryland Intrastate: (remainder)3Unclassifiable/Attainment
St. Mary's County

1 This date is July 20, 2012, unless otherwise noted.

2 Excludes Indian country located in each area, unless otherwise noted.

3 Includes any Indian country in each county or area, unless otherwise specified.

4Attainment date is extended to July 20, 2016.

Maryland—2015 8-Hour Ozone NAAQS

[Primary and Secondary]

Designated area1DesignationClassification
Date2TypeDate2Type
Baltimore, MDNonattainmentMarginal.
Anne Arundel County.
Baltimore County.
Carroll County.
Harford County.
Howard County.
City of Baltimore.
Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DENonattainmentMarginal.
Cecil County.
Washington, DC-MD-VANonattainmentMarginal.
Calvert County.
Charles County.
Frederick County.
Montgomery County.
Prince George's County.
Allegany County1/16/18Attainment/Unclassifiable
Caroline County1/16/18Attainment/Unclassifiable
Dorchester CountyAttainment/Unclassifiable
Garrett County1/16/18Attainment/Unclassifiable
Kent CountyAttainment/Unclassifiable
Queen Anne's CountyAttainment/Unclassifiable
St. Mary's CountyAttainment/Unclassifiable
Somerset County1/16/18Attainment/Unclassifiable
Talbot CountyAttainment/Unclassifiable
Washington CountyAttainment/Unclassifiable
Wicomico County1/16/18Attainment/Unclassifiable
Worcester County1/16/18Attainment/Unclassifiable

1Includes any Indian country in each county or area, unless otherwise specified. EPA is not determining the boundaries of any area of Indian country in this table, including any area of Indian country located in the larger designation area. The inclusion of any Indian country in the designation area is not a determination that the state has regulatory authority under the Clean Air Act for such Indian country.

2This date is August 3, 2018, unless otherwise noted.

Maryland—2008 Lead NAAQS

Designated areaDesignation for the 2008 NAAQSa
Date1 Type
Whole StateUnclassifiable/Attainment.

aIncludes Indian Country located in each county or area, except as otherwise specified.

1December 31, 2011 unless otherwise noted.

[43 FR 40510, Sept. 12, 1978]

Editorial Note: For Federal Register citations affecting §81.321, see the List of CFR Sections Affected, which appears in the Finding Aids section of the printed volume and at www.govinfo.gov.

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