1. Regulations
  2. title 40
  3. chapter I-i19
  4. part 81
  5. subpart C
  6. § 81.321

View all text of Subpart C [§ 81.300 - § 81.356]

§ 81.321 - Maryland.

Maryland—TSP

Designated area Does not meet primary standards Does not meet secondary standards Cannot be classified Better than national standards Metropolitan Baltimore Intrastate AQCR: (a) Baltimore City: #111 Zones 61, 65-68 1X #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

1 Regional 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 area Does not meet primary standards Does not meet secondary standards Cannot be classified Better than national standards Cumberland-Keyser Interstate AQCR, Election District No. 8, Luke, MdX Remainder of StateX

Maryland—2010 Sulfur Dioxide NAAQS

[Primary]

Designated area 1Designation Date 2Type Anne Arundel County and Baltimore County, MD 19/12/16Nonattainment. 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 Allegany County4/30/2021Attainment/Unclassifiable. 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.

1 Includes 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.

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

Maryland—Carbon Monoxide

Designated area Designation Classification Date 1Type Date 1Type 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

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

Maryland—Ozone (1-Hour Standard) 2

Designated area Designation Classification Date 1Type Date 1Type 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

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

2 The 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 area Designation aClassification Date 1Type Date 2Type 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.

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

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

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

Maryland—2012 Annual PM2.5 NAAQS

[Primary]

Designated area 1Designation Classification Date 2Type Date 2Type 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

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

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

Maryland—1997 24-Hour PM2.5 NAAQS

[Primary and Secondary]

Designated area Designation aClassification Date 1Type Date Type 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.

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

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

Maryland—2006 24-Hour PM2.5 NAAQS

[Primary and Secondary]

Designated area Designation aClassification Date 1Type Date Type 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.

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

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

Maryland—NO2 (1971 Annual Standard)

Designated area Does not meet primary standards Cannot be classified or better than national standards State of MarylandX

Maryland—NO2 (2010 1-Hour Standard)

Designated area Designation aDate 1Type 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.

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

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

Maryland—1997 8-Hour Ozone NAAQS

[Primary and Secondary]

Designated area Designation aCategory/classification Date 1Type Date 1Type Baltimore, MD: Anne Arundel CountyNonattainment( 5)Subpart 2/Serious. 4City of BaltimoreNonattainment( 5)Subpart 2/Serious. 4Baltimore CountyNonattainment( 5)Subpart 2/Serious. 4Carroll CountyNonattainment( 5)Subpart 2/Serious. 4Harford CountyNonattainment( 5)Subpart 2/Serious. 4Howard CountyNonattainment( 5)Subpart 2/Serious. 4Kent 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. 4Washington, 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

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

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

2 Effective April 15, 2008.

3 November 22, 2004.

4 Attainment date is June 15, 2013.

5 Effective March 2, 2012.

Maryland—2008 8-Hour Ozone NAAQS

[Primary and Secondary]

Designated area Designation Classification Date 1Type Date 1Type 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. 4Cecil CountyWashington, 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 Interstate 3Unclassifiable/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.

4 Attainment date is extended to July 20, 2016.

Maryland—2015 8-Hour Ozone NAAQS

[Primary and Secondary]

Designated area 1Designation Classification Date 2Type Date 2Type Baltimore, MDNonattainment11/7/22Moderate. Anne Arundel County. Baltimore County. Carroll County. Harford County. Howard County. City of Baltimore. Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DENonattainment11/7/22Moderate. Cecil County. Washington, DC-MD-VANonattainment11/7/22Moderate. Calvert County. Charles County. Fredrick 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

1 Includes 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.

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

Maryland—2008 Lead NAAQS

Designated area Designation for the 2008 NAAQS aDate 1Type Whole StateUnclassifiable/Attainment.

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

1 December 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.

AUTHORITY: 42 U.S.C. 7401,

SOURCE: 36 FR 22421, Nov. 25, 1971, unless otherwise noted.

CITE AS: 40 CFR 81.321