Federal regulations · Through 2026-08-25 · Newer source version available

40 CFR 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 Wilmington X
Section within City of Newark bounded by: College Avenue, CONRAIL tracks, South Chapel Street and Chestnut Hill Road X
Remainder of New Castle County X
Kent County X
Sussex County X
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 County X
Kent County X
Sussex County X
Delaware—2010 Sulfur Dioxide NAAQS
[Primary]
Designated area 1 Designation
Date 2 Type
Entire State 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.
Delaware—Carbon Monoxide
Designated Area Designation Classification
Date 1 Type Date 1 Type
Kent County Unclassifiable/Attainment
New Castle County Unclassifiable/Attainment
Sussex County Unclassifiable/Attainment
1 This date is November 15, 1990, unless otherwise noted.
Delaware—Ozone (1-Hour Standard)3
Designated area Designation Classification
Date 1 Type Date 1 Type
Philadelphia-Wilmington-Trenton Area:
Kent County Nonattainment Severe-15.
New Castle County Nonattainment Severe-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 County 8/5/2014 Attainment
Southern Delaware Intrastate AQCR:
Kent County Unclassifiable/Attainment.
Sussex 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.
Delaware—2012 Annual PM2.5 NAAQS
[Primary]
Designated area 1 Designation Classification
Date 2 Type Date 2 Type
Statewide:
Kent County Unclassifiable/Attainment
New Castle County Unclassifiable/Attainment
Sussex 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.
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 County Unclassifiable/Attainment.
Southern Delaware Intrastate AQCR:
Kent County Unclassifiable/Attainment.
Sussex 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.
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 County 8/5/2014 Attainment
Southern Delaware Intrastate AQCR:
Kent County Unclassifiable/Attainment.
Sussex 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.
NO2 (1971 Annual Standard)
Designated area Does not meet primary standards Cannot be classified or better than national standards
New Castle County X
Kent County X
Sussex County X
Delaware—NO2 (2010 1-Hour Standard)
Designated area Designation a
Date 1 Type
Kent County Unclassifiable/Attainment.
New Castle County Unclassifiable/Attainment.
Sussex 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.
Delaware—1997 8-Hour Ozone NAAQS
[Primary and Secondary]
Designated area Designation a Category/classification
Date 1 Type Date 1 Type
Philadelphia-Wilmington-Atlantic Ci, PA-NJ-MD-DE:
Kent County Nonattainment Subpart 2/Moderate.2
New Castle County Nonattainment Subpart 2/Moderate.2
Sussex County Nonattainment Subpart 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
Date 1 Type Date 1 Type
New Castle County 2 7/6/2026 Nonattainment 6/3/2016 Marginal.4
New Castle County
Seaford: 2
Sussex County Nonattainment Marginal.
Rest of State: 3
Southern Delaware Intrastate AQCR: (remainder)
Kent County Unclassifiable/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 area 1 Designation Classification
Date 2 Type Date 2 Type
New Castle County 7/6/2026 Nonattainment 7/30/2024 Serious.
New Castle County.
Kent County Attainment/Unclassifiable
Sussex 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 August 3, 2018, unless otherwise noted.
Delaware—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.

Where this section sits in the code

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

Delaware—TSP

Designated area Does not meet primary standards Does not meet secondary standards Cannot be classified Better than national standards

City of Wilmington X

Section within City of Newark bounded by: College Avenue, CONRAIL tracks, South Chapel Street and Chestnut Hill Road X

Remainder of New Castle County X

Kent County X

Sussex County X

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 County X

Kent County X

Sussex County X

Delaware—2010 Sulfur Dioxide NAAQS

[Primary]

Designated area 1 Designation

Date 2 Type

Entire State 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.

Delaware—Carbon Monoxide

Designated Area Designation Classification

Date 1 Type Date 1 Type

Kent County Unclassifiable/Attainment

New Castle County Unclassifiable/Attainment

Sussex County Unclassifiable/Attainment

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

Delaware—Ozone (1-Hour Standard)3

Designated area Designation Classification

Date 1 Type Date 1 Type

Philadelphia-Wilmington-Trenton Area:

Kent County Nonattainment Severe-15.

New Castle County Nonattainment Severe-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 County 8/5/2014 Attainment

Southern Delaware Intrastate AQCR:

Kent County Unclassifiable/Attainment.

Sussex 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.

Delaware—2012 Annual PM2.5 NAAQS

[Primary]

Designated area 1 Designation Classification

Date 2 Type Date 2 Type

Statewide:

Kent County Unclassifiable/Attainment

New Castle County Unclassifiable/Attainment

Sussex 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.

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 County Unclassifiable/Attainment.

Southern Delaware Intrastate AQCR:

Kent County Unclassifiable/Attainment.

Sussex 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.

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 County 8/5/2014 Attainment

Southern Delaware Intrastate AQCR:

Kent County Unclassifiable/Attainment.

Sussex 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.

NO2 (1971 Annual Standard)

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

New Castle County X

Kent County X

Sussex County X

Delaware—NO2 (2010 1-Hour Standard)

Designated area Designation a

Date 1 Type

Kent County Unclassifiable/Attainment.

New Castle County Unclassifiable/Attainment.

Sussex 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.

Delaware—1997 8-Hour Ozone NAAQS

[Primary and Secondary]

Designated area Designation a Category/classification

Date 1 Type Date 1 Type

Philadelphia-Wilmington-Atlantic Ci, PA-NJ-MD-DE:

Kent County Nonattainment Subpart 2/Moderate.2

New Castle County Nonattainment Subpart 2/Moderate.2

Sussex County Nonattainment Subpart 2/Moderate.2

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

Date 1 Type Date 1 Type

New Castle County 2 7/6/2026 Nonattainment 6/3/2016 Marginal.4

New Castle County

Seaford: 2

Sussex County Nonattainment Marginal.

Rest of State: 3

Southern Delaware Intrastate AQCR: (remainder)

Kent County Unclassifiable/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 area 1 Designation Classification

Date 2 Type Date 2 Type

New Castle County 7/6/2026 Nonattainment 7/30/2024 Serious.

New Castle County.

Kent County Attainment/Unclassifiable

Sussex County Attainment/Unclassifiable

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

Delaware—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.

Collected 2026-08-27T02:26:04Z. Source file · JSON

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