Title 40
SECTION 81.321
81.321 Maryland.
§ 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 1 | X | |||
| #112 Zone 72 | X | |||
| #113 Zones 76-80 | X | |||
| #117 Zones 94-100, 102, 103, 105-11 | X | |||
| #118 Zones 114-137 | X | |||
| #119 Zones 138, 140, 144, 146, 149 | X | |||
| Zones 139, 141-143, 145, 147, 150-56 | X | |||
| #120 Zones 157-66 | X | |||
| #121 Zones 168-70, 172, 176-78, 180, 181 | X | |||
| Zones 167, 171, 173-75, 179, 182 | X | |||
| #123 Zones 187-90 | X | |||
| #Zones 193-198 | X | |||
| Zones 191, 192 | X | |||
| #125 Zones 199-203 | X | |||
| #126 Zone 207 | X | |||
| Zones 204-06 | X | |||
| (b) Baltimore County: | ||||
| #325 Zones 417, 418, 420, 421 | X | |||
| #326 Zones 428, 431 | X | |||
| #328 Zone 446 | X | |||
| #329 Zones 449, 453-58 | X | |||
| Zones 450-52, 459 | X | |||
| #330 Zones 461, 462 | X | |||
| Zones 460, 463-68 | X | |||
| #331 Zones 469-72 | X | |||
| (c) Anne Arundel County: | ||||
| #201 Zones 208, 209 | X | |||
| #203 Zones 221-28 | X | |||
| #204 Zones 230 | X | |||
| (d) Remainder of AQCR | X | |||
| Cumberland-Keyser Interstate AQCR: | ||||
| (a) Election District No. 8, Luke, MD | X | |||
| (b) Remainder AQCR | X | |||
| Central Maryland Interstate AQCR | X | |||
| National Capital Interstate AQCR | X | |||
| Southern Maryland Intrastate AQCR | X | |||
| Eastern Shore Intrastate AQCR | X |
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, Md | X | |||
| Remainder of State | X |
Maryland - 2010 Sulfur Dioxide NAAQS
[Primary]
| Designated area 1 3 | Designation | |
|---|---|---|
| Date 2 | Type | |
| Anne Arundel County and Baltimore County, MD 1 | 9/12/16 | Nonattainment. |
| 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, MD | 9/12/16 | Attainment/Unclassifiable. |
| Baltimore County (part) | Attainment/Unclassifiable. | |
| Remainder of County | ||
| Calvert County | Attainment/Unclassifiable. | |
| Caroline County | Attainment/Unclassifiable. | |
| Carroll County | Attainment/Unclassifiable. | |
| Cecil County | Attainment/Unclassifiable. | |
| Charles County | Attainment/Unclassifiable. | |
| Dorchester County | Attainment/Unclassifiable. | |
| Frederick County | Attainment/Unclassifiable. | |
| Garrett County | Attainment/Unclassifiable. | |
| Harford County | Attainment/Unclassifiable. | |
| Howard County | Attainment/Unclassifiable. | |
| Kent County | Attainment/Unclassifiable. | |
| Montgomery County | Attainment/Unclassifiable. | |
| Prince George's County | Attainment/Unclassifiable. | |
| Queen Anne's County | Attainment/Unclassifiable. | |
| Somerset County | Attainment/Unclassifiable. | |
| St. Mary's County | Attainment/Unclassifiable. | |
| Talbot County | Attainment/Unclassifiable. | |
| Washington County | Attainment/Unclassifiable. | |
| Wicomico County | Attainment/Unclassifiable. | |
| Worcester County | Attainment/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.
3 Allegany County will be designated by December 31, 2020.
Maryland - Carbon Monoxide
| Designated area | Designation | Classification | ||
|---|---|---|---|---|
| Date 1 | Type | Date 1 | Type | |
| Baltimore Area | ||||
| Baltimore City (part) | ||||
| Regional Planning District No. 118 (generally corresponding to the Central Business District) | 12/15/95 | Attainment | ||
| Washington Area | ||||
| Montgomery County (part) | ||||
| Election Districts 4, 7, 13 | Attainment | |||
| Prince George's County (part) | ||||
| Election Districts 2, 6, 12, 16, 17, 18 | Attainment | |||
| 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 Intrastate | Unclassifiable/Attainment | |||
| Frederick County | ||||
| AQCR 113 Cumberland-Keyser Interstate | Unclassifiable/Attainment | |||
| Allegany County | ||||
| Garrett County | ||||
| Washington County | ||||
| AQCR 114 Eastern Shore Interstate | Unclassifiable/Attainment | |||
| Caroline County | ||||
| Cecil County | ||||
| Dorchester County | ||||
| Kent County | ||||
| Queen Anne's County | ||||
| Kent County | 12/22/06 | Attainment | ||
| Queen Anne's County | 12/22/06 | Attainment | ||
| 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 Intrastate | Unclassifiable/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 1 | Type | Date 1 | Type | |
| Baltimore Area: | ||||
| Anne Arundel County | 11/15/90 | Nonattainment | 11/15/90 | Severe-15. |
| Baltimore | ||||
| City of Baltimore | 11/15/90 | Nonattainment | 11/15/90 | Severe-15. |
| Baltimore County | 11/15/90 | Nonattainment | 11/15/90 | Severe-15. |
| Carroll County | 11/15/90 | Nonattainment | 11/15/90 | Severe-15. |
| Harford County | 11/15/90 | Nonattainment | 11/15/90 | Severe-15. |
| Howard County | 11/15/90 | Nonattainment | 11/15/90 | Severe-15. |
| Kent County and Queen Anne's County Area: | ||||
| Kent County | 10/21/04 | Attainment | ||
| Queen Anne's County | 10/21/04 | Attainment | ||
| Philadelphia-Wilmington-Trenton Area: | ||||
| Cecil County | 11/15/90 | Nonattainment | 11/15/90 | Severe-15. |
| Washington, DC Area: | ||||
| Calvert County | Nonattainment | 3/25/03 | Severe | |
| Charles County | Nonattainment | 3/25/03 | Severe | |
| Frederick County | Nonattainment | 3/25/03 | Severe | |
| Montgomery County | Nonattainment | 3/25/03 | Severe | |
| Prince George's County | Nonattainment | 3/25/03 | Severe | |
| AQCR 113 Cumberland-Keyser Interstate | Unclassifiable/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 a | Classification | ||
|---|---|---|---|---|
| Date 1 | Type | Date 2 | Type | |
| Baltimore, MD: | ||||
| Anne Arundel County | 12/16/14 | Attainment | ||
| Baltimore County | 12/16/14 | Attainment | ||
| Carroll County | 12/16/14 | Attainment | ||
| Harford County | 12/16/14 | Attainment | ||
| Howard County | 12/16/14 | Attainment | ||
| City of Baltimore | 12/16/14 | Attainment | ||
| Martinsburg, WV-Hagerstown, MD: | ||||
| Washington County | 12/16/14 | Attainment | ||
| Washington, DC-MD-VA: | ||||
| Charles County | 10/6/14 | Attainment | ||
| Frederick County | 10/6/14 | Attainment | ||
| Montgomery County | 10/6/14 | Attainment | ||
| Prince George's County | 10/6/14 | Attainment | ||
| AQCR 113 Cumberland-Keyser Interstate: | ||||
| Allegany County | Unclassifiable/Attainment. | |||
| Garrett County | Unclassifiable/Attainment. | |||
| AQCR 114 Eastern Shore Interstate (remainder of): | ||||
| Caroline County | Unclassifiable/Attainment. | |||
| Cecil County | Unclassifiable/Attainment. | |||
| Dorchester County | Unclassifiable/Attainment. | |||
| Kent County | Unclassifiable/Attainment. | |||
| Queen Anne's County | Unclassifiable/Attainment. | |||
| Somerset County | Unclassifiable/Attainment. | |||
| Talbot County | Unclassifiable/Attainment. | |||
| Wicomico County | Unclassifiable/Attainment. | |||
| Worcester County | Unclassifiable/Attainment. | |||
| AQCR 116 Southern Maryland Intrastate (remainder of): | ||||
| Calvert County | Unclassifiable/Attainment. | |||
| St. Mary's County | Unclassifiable/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 1 | Designation | Classification | ||
|---|---|---|---|---|
| Date 2 | Type | Date 2 | Type | |
| AQCR 047 National Capital Interstate (DC-MD-VA) (part): | ||||
| Montgomery County | Unclassifiable/Attainment | |||
| Prince George's County | Unclassifiable/Attainment | |||
| Metropolitan Baltimore Intrastate AQCR: | ||||
| Anne Arundel County | Unclassifiable/Attainment | |||
| Baltimore County | Unclassifiable/Attainment | |||
| City of Baltimore | Unclassifiable/Attainment | |||
| Carroll County | Unclassifiable/Attainment | |||
| Harford County | Unclassifiable/Attainment | |||
| Howard County | Unclassifiable/Attainment | |||
| AQCR 112 Central Maryland Intrastate: | ||||
| Frederick County | Unclassifiable/Attainment | |||
| AQCR 113 Cumberland-Keyser Interstate: | ||||
| Allegany County | Unclassifiable/Attainment | |||
| Garrett County | Unclassifiable/Attainment | |||
| Washington County | Unclassifiable/Attainment | |||
| AQCR 114 Eastern Shore Intrastate: | ||||
| Caroline County | Unclassifiable/Attainment | |||
| Cecil County | Unclassifiable/Attainment | |||
| Dorchester County | Unclassifiable/Attainment | |||
| Kent County | Unclassifiable/Attainment | |||
| Queen Anne's County | Unclassifiable/Attainment | |||
| Somerset County | Unclassifiable/Attainment | |||
| Talbot County | Unclassifiable/Attainment | |||
| Wicomico County | Unclassifiable/Attainment | |||
| Worcester County | Unclassifiable/Attainment | |||
| AQCR 116 Southern Maryland Intrastate: | ||||
| Calvert County | Unclassifiable/Attainment | |||
| Charles County | Unclassifiable/Attainment | |||
| St. Mary's County | Unclassifiable/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 a | Classification | ||
|---|---|---|---|---|
| Date 1 | Type | Date | Type | |
| AQCR 047 National Capital Interstate (DC-MD-VA) (part): | ||||
| Montgomery County | Unclassifiable/Attainment. | |||
| Prince George's County | Unclassifiable/Attainment. | |||
| Metropolitan Baltimore Intrastate AQCR: | ||||
| Anne Arundel County | Unclassifiable/Attainment. | |||
| Baltimore County | Unclassifiable/Attainment. | |||
| City of Baltimore | Unclassifiable/Attainment. | |||
| Carroll County | Unclassifiable/Attainment. | |||
| Harford County | Unclassifiable/Attainment. | |||
| Howard County | Unclassifiable/Attainment. | |||
| AQCR 112 Central Maryland Intrastate: | ||||
| Frederick County | Unclassifiable/Attainment. | |||
| AQCR 113 Cumberland-Keyser Interstate: | ||||
| Allegany County | Unclassifiable/Attainment. | |||
| Garrett County | Unclassifiable/Attainment. | |||
| Washington County | Unclassifiable/Attainment. | |||
| AQCR 114 Eastern Shore Intrastate: | ||||
| Caroline County | Unclassifiable/Attainment. | |||
| Cecil County | Unclassifiable/Attainment. | |||
| Dorchester County | Unclassifiable/Attainment. | |||
| Kent County | Unclassifiable/Attainment. | |||
| Queen Anne's County | Unclassifiable/Attainment. | |||
| Somerset County | Unclassifiable/Attainment. | |||
| Talbot County | Unclassifiable/Attainment. | |||
| Wicomico County | Unclassifiable/Attainment. | |||
| Worcester County | Unclassifiable/Attainment. | |||
| AQCR 116 Southern Maryland Intrastate: | ||||
| Calvert County | Unclassifiable/Attainment. | |||
| Charles County | Unclassifiable/Attainment. | |||
| St. Mary's County | Unclassifiable/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 a | Classification | ||
|---|---|---|---|---|
| Date 1 | Type | Date | Type | |
| AQCR 047 National Capital Interstate (DC-MD-VA) (part): | ||||
| Montgomery County | Unclassifiable/Attainment. | |||
| Prince George's County | Unclassifiable/Attainment. | |||
| Metropolitan Baltimore Intrastate AQCR: | ||||
| Anne Arundel County | Unclassifiable/Attainment. | |||
| Baltimore County | Unclassifiable/Attainment. | |||
| City of Baltimore | Unclassifiable/Attainment. | |||
| Carroll County | Unclassifiable/Attainment. | |||
| Harford County | Unclassifiable/Attainment. | |||
| Howard County | Unclassifiable/Attainment. | |||
| AQCR 112 Central Maryland Intrastate: | ||||
| Frederick County | Unclassifiable/Attainment. | |||
| AQCR 113 Cumberland-Keyser Interstate: | ||||
| Allegany County | Unclassifiable/Attainment. | |||
| Garrett County | Unclassifiable/Attainment. | |||
| Washington County | Unclassifiable/Attainment. | |||
| AQCR 114 Eastern Shore Intrastate: | ||||
| Caroline County | Unclassifiable/Attainment. | |||
| Cecil County | Unclassifiable/Attainment. | |||
| Dorchester County | Unclassifiable/Attainment. | |||
| Kent County | Unclassifiable/Attainment. | |||
| Queen Anne's County | Unclassifiable/Attainment. | |||
| Somerset County | Unclassifiable/Attainment. | |||
| Talbot County | Unclassifiable/Attainment. | |||
| Wicomico County | Unclassifiable/Attainment. | |||
| Worcester County | Unclassifiable/Attainment. | |||
| AQCR 116 Southern Maryland Intrastate: | ||||
| Calvert County | Unclassifiable/Attainment. | |||
| Charles County | Unclassifiable/Attainment. | |||
| St. Mary's County | Unclassifiable/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 Maryland | X |
Maryland - NO2 (2010 1-Hour Standard)
| Designated area | Designation a | |
|---|---|---|
| Date 1 | Type | |
| Allegany County | Unclassifiable/Attainment. | |
| Anne Arundel County | Unclassifiable/Attainment. | |
| Baltimore County | Unclassifiable/Attainment. | |
| City of Baltimore | Unclassifiable/Attainment. | |
| Calvert County | Unclassifiable/Attainment. | |
| Caroline County | Unclassifiable/Attainment. | |
| Carroll County | Unclassifiable/Attainment. | |
| Cecil County | Unclassifiable/Attainment. | |
| Charles County | Unclassifiable/Attainment. | |
| Dorchester County | Unclassifiable/Attainment. | |
| Frederick County | Unclassifiable/Attainment. | |
| Garrett County | Unclassifiable/Attainment. | |
| Harford County | Unclassifiable/Attainment. | |
| Howard County | Unclassifiable/Attainment. | |
| Kent County | Unclassifiable/Attainment. | |
| Montgomery County | Unclassifiable/Attainment. | |
| Prince George's County | Unclassifiable/Attainment. | |
| Queene Anne's County | Unclassifiable/Attainment. | |
| St. Mary's County | Unclassifiable/Attainment. | |
| Somerset County | Unclassifiable/Attainment. | |
| Talbot County | Unclassifiable/Attainment. | |
| Washington County | Unclassifiable/Attainment. | |
| Wicomico County | Unclassifiable/Attainment. | |
| Worchester County | Unclassifiable/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 a | Category/classification | ||
|---|---|---|---|---|
| Date 1 | Type | Date 1 | Type | |
| Baltimore, MD: | ||||
| Anne Arundel County | Nonattainment | ( 5) | Subpart 2/Serious. 4 | |
| City of Baltimore | Nonattainment | ( 5) | Subpart 2/Serious. 4 | |
| Baltimore County | Nonattainment | ( 5) | Subpart 2/Serious. 4 | |
| Carroll County | Nonattainment | ( 5) | Subpart 2/Serious. 4 | |
| Harford County | Nonattainment | ( 5) | Subpart 2/Serious. 4 | |
| Howard County | Nonattainment | ( 5) | Subpart 2/Serious. 4 | |
| Kent and Queen Anne's Area | ||||
| Kent County | 1/22/07 | Attainment | ||
| Queen Anne's County | 1/22/07 | Attainment | ||
| Washington County (Hagerstown), MD: | ||||
| Washington County | (2) | Attainment. | ||
| Philadelphia-Wilmin-Atlantic Ci, PA-NJ-MD-DE: | ||||
| Cecil County | Nonattainment | Subpart 2/Moderate. 4 | ||
| Washington, DC-MD-VA: | ||||
| Calvert County | Nonattainment | Subpart 2/Moderate. | ||
| Charles County | Nonattainment | Subpart 2/Moderate. | ||
| Frederick County | Nonattainment | Subpart 2/Moderate. | ||
| Montgomery County | Nonattainment | Subpart 2/Moderate. | ||
| Prince George's County | Nonattainment | Subpart 2/Moderate. | ||
| AQCR 113 Cumberland-Keyser Interstate | Unclassifiable/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 1 | Type | Date 1 | Type | |
| Baltimore, MD: 2 | Nonattainment | Moderate. | ||
| Anne Arundel County | ||||
| Baltimore County | ||||
| Baltimore City | ||||
| Carroll County | ||||
| Harford County | ||||
| Howard County | ||||
| Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE: 2 | Nonattainment | 6/3/16 | Marginal. 4 | |
| Cecil County | ||||
| Washington, DC-MD-VA: 2 | April 15, 2019 | Attainment | ||
| Calvert County | 4/15/19 | Attainment | ||
| Charles County | 4/15/19 | Attainment | ||
| Frederick County | 4/15/19 | Attainment | ||
| Montgomery County | 4/15/19 | Attainment | ||
| Prince George's County | 4/15/19 | Attainment | ||
| AQCR 113 Cumberland-Keyser Interstate 3 | Unclassifiable/Attainment | |||
| Allegany County | ||||
| Garrett County | ||||
| Washington County | ||||
| AQCR 114 Eastern Shore Interstate: (remainder) 3 | Unclassifiable/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) 3 | Unclassifiable/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 1 | Designation | Classification | ||
|---|---|---|---|---|
| Date 2 | Type | Date 2 | Type | |
| Baltimore, MD | Nonattainment | Marginal. | ||
| Anne Arundel County. | ||||
| Baltimore County. | ||||
| Carroll County. | ||||
| Harford County. | ||||
| Howard County. | ||||
| City of Baltimore. | ||||
| Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE | Nonattainment | Marginal. | ||
| Cecil County. | ||||
| Washington, DC-MD-VA | Nonattainment | Marginal. | ||
| Calvert County. | ||||
| Charles County. | ||||
| Frederick County. | ||||
| Montgomery County. | ||||
| Prince George's County. | ||||
| Allegany County | 1/16/18 | Attainment/Unclassifiable | ||
| Caroline County | 1/16/18 | Attainment/Unclassifiable | ||
| Dorchester County | Attainment/Unclassifiable | |||
| Garrett County | 1/16/18 | Attainment/Unclassifiable | ||
| Kent County | Attainment/Unclassifiable | |||
| Queen Anne's County | Attainment/Unclassifiable | |||
| St. Mary's County | Attainment/Unclassifiable | |||
| Somerset County | 1/16/18 | Attainment/Unclassifiable | ||
| Talbot County | Attainment/Unclassifiable | |||
| Washington County | Attainment/Unclassifiable | |||
| Wicomico County | 1/16/18 | Attainment/Unclassifiable | ||
| Worcester County | 1/16/18 | Attainment/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 a | |
|---|---|---|
| Date 1 | Type | |
| Whole State | Unclassifiable/Attainment. | |
a Includes Indian Country located in each county or area, except as otherwise specified.
1 December 31, 2011 unless otherwise noted.