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 Code of Federal Regulations (Last Updated: July 5, 2024)
 Title 40 - Protection of Environment
 Chapter I - Environmental Protection Agency
 SubChapter C - Air Programs
 Part 81 - Designation of Areas for Air Quality Planning Purposes
 Subpart C - Section 107 Attainment Status Designations

  § 81.320 - Maine.  

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  • § 81.320 Maine.

    Maine - TSP

    Designated areas Does not meet primary standards Does not meet secondary standards Cannot be classified Better than national standards
    AQCR 107 (Central ME):
    AugustaX
    Lewiston/AuburnX
    RocklandX
    Remainder of AQCRX
    AQCR 109 (Downeast):
    LincolnX
    Bangor/BrewerX
    BaileyvilleX
    Remainder of AQCRX
    AQCR 108 (Aroostook)X
    AQCR 111 (Northwest ME)X
    AQCR 110 (Met. Portland)X

    Maine - 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 standard
    AQCR 110X
    AQCR 107X
    AQCR 109X
    AQCR 108-MadawaskaX
    Rest of regionX
    AQCR 111X

    Maine - 2010 Sulfur Dioxide NAAQS

    [Primary]

    Designated area1 Designation
    Date2 Type
    Statewide:Attainment/Unclassifiable.
    Androscoggin County
    Aroostook County
    Cumberland County
    Franklin County
    Hancock County
    Kennebec County
    Knox County
    Lincoln County
    Oxford County
    Penobscot County
    Piscataquis County
    Sagadahoc County
    Somerset County
    Waldo County
    Washington County
    York County

    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.

    Maine - Carbon Monoxide

    Designated area Designation Classification
    Date1 Type Date1 Type
    StatewideUnclassifiable/ Attainment
    Androscoggin County
    Aroostook County
    Cumberland County
    Franklin County
    Hancock County
    Kennebec County
    Knox County
    Lincoln County
    Oxford County
    Penobscot County
    Piscataquis County
    Sagadahoc County
    Somerset County
    Waldo County
    Washington County
    York County

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

    Maine - Ozone (1-Hour Standard)4

    Designated area Designation Classification
    Date1 Type Date1 Type
    Franklin County Area:
    Franklin County (part)Unclassifiable/Attainment
    Hancock County and Waldo County Area:
    Hancock CountyAttainment
    Waldo CountyAttainment
    Knox County and Lincoln County Area:
    Knox County(3)Nonattainment(3)Moderate.
    Lincoln County(3)Nonattainment(3)Moderate.
    Lewiston-Auburn Area:
    Androscoggin County(3)Nonattainment(3)Moderate.
    Kennebec County(3)Nonattainment(3)Moderate.
    Oxford County Area:
    Oxford County (part)Unclassifiable/Attainment
    Portland Area:
    Cumberland County(3)Nonattainment(3)Moderate.2
    Sagadahoc County(3)Nonattainment(3)Moderate.2
    York County(3)Nonattainment(3)Moderate.2
    Somerset County Area:
    Somerset County (part)Unclassifiable/Attainment
    AQCR 108 Aroostook IntrastateUnclassifiable/Attainment
    Aroostook County (part) see 40 CFR 81.179
    AQCR 109 Down East IntrastateUnclassifiable/Attainment
    Penobscot County (part), as described under 40 CFR 81.181
    Piscataquis County (part) see 40 CFR 81.181
    Washington County
    AQCR 111 Northwest Maine Intrastate (Remainder of)Unclassifiable/Attainment
    see 40 CFR 81.182
    Aroostook County
    Franklin County (part)
    Oxford County (part)
    Penobscot County (part)
    Piscataquis County (part)
    Somerset County (part)

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

    2 Attainment date extended to November 15, 1997.

    3 This date is January 16, 2001.

    4 The 1-hour ozone standard is revoked effective June 15, 2005 for all areas in Maine. Hancock and Waldo Counties are maintenance areas for the 1-hour NAAQS for purposes of 40 CFR part 51 subpart X.

    Maine - PM-10

    Designated area Designation Classification
    Date Type Date Type
    Aroostook County:
    City of Presque Isle (part)1 8/30/95Attainment
    That area bounded by Allen Street from its intersection with Main Street east to Dudley Street, Dudley Street south to Cedar Street, Cedar Street west to Main Street, Main Street south to Kennedy Brook, Kennedy Brook northwest crossing Presque Isle Stream to Coburn Street, Coburn Street northwest to Mechanic Street, Mechanic Street west to Judd Street, Judd Street northeast to State Street, State Street northwest to School Street, School Street northeast to Park Street, Park Street east to Main Street
    Rest of State11/15/90Unclassifiable

    1 This definition of the nonattainment area redefines its borders from the entire City of Presque Isle to this area of 0.6 square miles which circumscribe the area of high emission densities and ambient PM10 levels. (60 FR 2885, January 12, 1995)

    Maine - 1997 Annual PM2.5 NAAQS

    [Primary and Secondary]

    Designated area Designationa Classification
    Date1 Type Date Type
    Statewide:
    Androscoggin CountyUnclassifiable/Attainment.
    Aroostook CountyUnclassifiable/Attainment.
    Cumberland CountyUnclassifiable/Attainment.
    Franklin CountyUnclassifiable/Attainment.
    Hancock CountyUnclassifiable/Attainment.
    Kennebec CountyUnclassifiable/Attainment.
    Knox CountyUnclassifiable/Attainment.
    Lincoln CountyUnclassifiable/Attainment.
    Oxford CountyUnclassifiable/Attainment.
    Penobscot CountyUnclassifiable/Attainment.
    Piscataquis CountyUnclassifiable/Attainment.
    Sagadahoc CountyUnclassifiable/Attainment.
    Somerset CountyUnclassifiable/Attainment.
    Waldo CountyUnclassifiable/Attainment.
    Washington CountyUnclassifiable/Attainment.
    York 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.

    Maine - 2012 Annual PM2.5 NAAQS

    [Primary]

    Designated area1 Designation Classification
    Date2 Type Date2 Type
    Statewide:
    Androscoggin CountyUnclassifiable/Attainment
    Aroostook CountyUnclassifiable/Attainment
    Cumberland CountyUnclassifiable/Attainment
    Franklin CountyUnclassifiable/Attainment
    Hancock CountyUnclassifiable/Attainment
    Kennebec CountyUnclassifiable/Attainment
    Knox CountyUnclassifiable/Attainment
    Lincoln CountyUnclassifiable/Attainment
    Oxford CountyUnclassifiable/Attainment
    Penobscot CountyUnclassifiable/Attainment
    Piscataquis CountyUnclassifiable/Attainment
    Sagadahoc CountyUnclassifiable/Attainment
    Somerset CountyUnclassifiable/Attainment
    Waldo CountyUnclassifiable/Attainment
    Washington CountyUnclassifiable/Attainment
    York 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.

    Maine - 1997 24-Hour PM2.5 NAAQS

    [Primary and Secondary]

    Designated area Designationa Classification
    Date1 Type Date Type
    Statewide:
    Androscoggin CountyUnclassifiable/Attainment.
    Aroostook CountyUnclassifiable/Attainment.
    Cumberland CountyUnclassifiable/Attainment.
    Franklin CountyUnclassifiable/Attainment.
    Hancock CountyUnclassifiable/Attainment.
    Kennebec CountyUnclassifiable/Attainment.
    Knox CountyUnclassifiable/Attainment.
    Lincoln CountyUnclassifiable/Attainment.
    Oxford CountyUnclassifiable/Attainment.
    Penobscot CountyUnclassifiable/Attainment.
    Piscataquis CountyUnclassifiable/Attainment.
    Sagadahoc CountyUnclassifiable/Attainment.
    Somerset CountyUnclassifiable/Attainment.
    Waldo CountyUnclassifiable/Attainment.
    Washington CountyUnclassifiable/Attainment.
    York 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.

    Maine - 2006 24-Hour PM2.5 NAAQS

    [Primary and Secondary]

    Designated area Designationa Classification
    Date1 Type Date Type
    Statewide:
    Androscoggin CountyUnclassifiable/Attainment.
    Aroostook CountyUnclassifiable/Attainment.
    Cumberland CountyUnclassifiable/Attainment.
    Franklin CountyUnclassifiable/Attainment.
    Hancock CountyUnclassifiable/Attainment.
    Kennebec CountyUnclassifiable/Attainment.
    Knox CountyUnclassifiable/Attainment.
    Lincoln CountyUnclassifiable/Attainment.
    Oxford CountyUnclassifiable/Attainment.
    Penobscot CountyUnclassifiable/Attainment.
    Piscataquis CountyUnclassifiable/Attainment.
    Sagadahoc CountyUnclassifiable/Attainment.
    Somerset CountyUnclassifiable/Attainment.
    Waldo CountyUnclassifiable/Attainment.
    Washington CountyUnclassifiable/Attainment.
    York 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.

    Maine - NO2 (1971 Annual Standard)

    Designated area Does not meet primary standards Cannot be classified or better than national standards
    AQCR 110X
    AQCR 107X
    AQCR 109X
    AQCR 108X
    AQCR 111X

    Maine - NO2 (2010 1-Hour Standard)

    Designated area Designationa
    Date1 Type
    State of MaineUnclassifiable/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.

    Maine - 1997 8-Hour Ozone NAAQS

    ([Primary and Secondary) ]

    Designated area Designationa Category/classification
    Date1 Type Date1 Type
    Hancock, Knox, Lincoln and Waldo Cos., ME:
    Hancock County (part) (includes only the following cities and towns): Bar Harbor, Blue Hill, Brooklin, Brooksville, Cranberry Isle, Deer Isle, Frenchboro, Gouldsboro, Hancock, Lamoine, Mount Desert, Sedgwick, Sorrento, Southwest Harbor, Stonington, Sullivan, Surry, Swans Island, Tremont, Trenton, and Winter HarborJanuary 10, 2007Attainment
    Knox County (part) (includes only the following cities and towns): Camden, Criehaven, Cushing, Friendship, Isle au Haut, Matinicus Isle, Muscle Ridge Shoals, North Haven, Owls Head, Rockland, Rockport, St. George, South Thomaston, Thomaston, Vinalhaven, and WarrenJanuary 10, 2007Attainment
    Lincoln County (part) (includes only the following cities and towns): Alna, Boothbay, Boothbay Harbor, Breman, Bristol, Damariscotta, Dresden, Edgecomb, Monhegan, Newcastle, Nobleboro, South Bristol, Southport, Waldoboro, Westport, and WiscassetJanuary 10, 2007Attainment
    Waldo County (part) (includes only the following town): IslesboroJanuary 10, 2007Attainment
    Portland, ME:
    Androscoggin County (part) (includes only the following town): DurhamJanuary 10, 2007Attainment
    Cumberland County (part) (includes only the following cities and towns): Brunswick, Cape Elizabeth, Casco, Cumberland, Falmouth, Freeport, Frye Island, Gorham, Gray, Harpswell, Long Island, New Gloucester, North Yarmouth, Portland, Pownal, Raymond, Scarborough, South Portland, Standish, Westbrook, Windham, and YarmouthJanuary 10, 2007Attainment
    Sagadahoc County (includes all cities & towns)January 10, 2007Attainment
    York County (part) (includes only the following cities and towns): Alfred, Arundel, Berwick, Biddeford, Buxton, Dayton, Elliot, Hollis, Kennebunk, Kennebunkport, Kittery, Limington, Lyman, North Berwick, Ogunquit, Old Orchard Beach, Saco, Sanford, South Berwick, Wells, and YorkJanuary 10, 2007Attainment
    Rest of StateUnclassifiable Attainment
    Androscoggin County (part) remainder
    Aroostook County
    Cumberland County (part) remainder
    Franklin County
    Hancock County (part) remainder
    Kennebec County
    Knox County (part) remainder
    Lincoln County (part) remainder
    Oxford County
    Penobscot County
    Piscataquis County
    Somerset County
    Waldo County (part) remainder
    Washington County
    York County (part) remainder

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

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

    Maine - 2008 8-Hour Ozone NAAQS

    ([Primary and secondary) Secondary]

    Designated area Designation Classification
    Date1 Type Date1 Type
    Statewide:2 Unclassifiable/Attainment
    Androscoggin County
    Aroostook County
    Cumberland County
    Franklin County
    Hancock County
    Kennebec County
    Knox County
    Lincoln County
    Oxford County
    Penobscot County
    Piscataquis County
    Sagadahoc County
    Somerset County
    Waldo County
    Washington County
    York County

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

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

    Maine - 2015 8-Hour Ozone NAAQS

    [Primary and Secondary]

    Designated area1 Designation Classification
    Date2 Type Date Type
    StatewideAttainment/Unclassifiable
    Androscoggin County
    Aroostook County
    Cumberland County
    Franklin County
    Hancock County
    Kennebec County
    Knox County
    Lincoln County
    Oxford County
    Penobscot County
    Piscataquis County
    Sagadahoc County
    Somerset County
    Waldo County
    Washington County
    York County

    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 January 16, 2018, unless otherwise noted.

    Maine - 2008 Lead NAAQS

    Designated area Designation for the 2008 NAAQSa
    Date1 Type
    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 8964, Mar. 3, 1978]

    Editorial Note

    Editorial Note:

    For Federal Register citations affecting § 81.320, see the List of CFR Sections Affected, which appears in the Finding Aids section of the printed volume and at www.govinfo.gov.