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 Code of Federal Regulations (Last Updated: April 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

  § 81.308 - Delaware.  

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  • § 81.308 Delaware.

    Delaware—TSP

    Designated area Does not meet primary standards Does not meet secondary standards Cannot be classified Better than national standards
    City of WilmingtonX
    Section within City of Newark bounded by: College Avenue, CONRAIL tracks, South Chapel Street and Chestnut Hill RoadX
    Remainder of New Castle CountyX
    Kent CountyX
    Sussex CountyX

    Delaware—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
    New Castle CountyX
    Kent CountyX
    Sussex CountyX

    Delaware—2010 Sulfur Dioxide NAAQS

    [Primary]

    Designated area1 Designation
    Date2 Type
    Entire StateAttainment/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.

    Delaware—Carbon Monoxide

    Designated Area Designation Classification
    Date1 Type Date1 Type
    Kent CountyUnclassifiable/Attainment
    New Castle CountyUnclassifiable/Attainment
    Sussex CountyUnclassifiable/Attainment

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

    Delaware—Ozone (1-Hour Standard)3

    Designated area Designation Classification
    Date1 Type Date1 Type
    Philadelphia-Wilmington-Trenton Area:
    Kent CountyNonattainmentSevere-15.
    New Castle CountyNonattainmentSevere-15.
    Sussex County Area:
    Sussex County(2)Nonattainment(2)Marginal.

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

    2 This date is October 18, 2000.

    3 The 1-hour ozone standard is revoked effective June 15, 2005 for all areas in Delaware.

    Delaware—1997 Annual PM2.5 NAAQS

    [Primary and Secondary]

    Designated area Designationa Classification
    Date1 Type Date Type
    Philadelphia-Wilmington, PA–NJ–DE: New Castle County8/5/2014Attainment
    Southern Delaware Intrastate AQCR:
    Kent CountyUnclassifiable/Attainment.
    Sussex 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.

    Delaware—2012 Annual PM2.5 NAAQS

    [Primary]

    Designated area1 Designation Classification
    Date2 Type Date2 Type
    Statewide:
    Kent CountyUnclassifiable/Attainment
    New Castle CountyUnclassifiable/Attainment
    Sussex 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.

    Delaware—1997 24-Hour PM2.5 NAAQS

    [Primary and Secondary]

    Designated area Designationa Classification
    Date1 Type Date Type
    Philadelphia-Wilmington, PA–NJ–DE:
    New Castle CountyUnclassifiable/Attainment.
    Southern Delaware Intrastate AQCR:
    Kent CountyUnclassifiable/Attainment.
    Sussex 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.

    Delaware—2006 24-Hour PM2.5 NAAQS

    [Primary and Secondary]

    Designated area Designationa Classification
    Date1 Type Date Type
    Philadelphia-Wilmington, PA–NJ–DE: New Castle County8/5/2014Attainment
    Southern Delaware Intrastate AQCR:
    Kent CountyUnclassifiable/Attainment.
    Sussex 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.

    NO2 (1971 Annual Standard)

    Designated area Does not meet primary standards Cannot be classified or better than national standards
    New Castle CountyX
    Kent CountyX
    Sussex CountyX

    Delaware—NO2 (2010 1-Hour Standard)

    Designated area Designationa
    Date1 Type
    Kent CountyUnclassifiable/Attainment.
    New Castle CountyUnclassifiable/Attainment.
    Sussex 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.

    Delaware—1997 8-Hour Ozone NAAQS

    [Primary and Secondary]

    Designated area Designationa Category/classification
    Date1 Type Date1 Type
    Philadelphia-Wilmington-Atlantic Ci, PA-NJ-MD-DE:
    Kent CountyNonattainmentSubpart 2/Moderate.2
    New Castle CountyNonattainmentSubpart 2/Moderate.2
    Sussex CountyNonattainmentSubpart 2/Moderate.2

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

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

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

    Delaware—2008 8-Hour Ozone NAAQS

    [Primary and Secondary]

    Designated area Designation Classification
    Date1 Type Date1 Type
    Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE:2 Nonattainment6/3/16Marginal.4
    New Castle County
    Seaford:2
    Sussex CountyNonattainmentMarginal.
    Rest of State:3
    Southern Delaware Intrastate AQCR: (remainder)
    Kent CountyUnclassifiable/Attainment

    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.

    Delaware—2015 8-Hour Ozone NAAQS

    [Primary and Secondary]

    Designated area1 Designation Classification
    Date2 Type Date2 Type
    Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DENonattainmentNovember 7, 202211/7/22Moderate.
    New Castle County.
    Kent CountyAttainment/Unclassifiable
    Sussex 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 August 3, 2018, unless otherwise noted.

    Delaware—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 40505, Sept. 12, 1978]

    Editorial Note

    Editorial Note:

    For Federal Register citations affecting § 81.308, see the List of CFR Sections Affected, which appears in the Finding Aids section of the printed volume and at www.govinfo.gov.