2024-16570. Designations of Areas for Air Quality Planning Purposes; Pennsylvania, New Jersey, Maryland, Delaware; Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE 2015 8-Hour Ozone Nonattainment Area; Reclassification to Serious

Delaware—2015 8-Hour Ozone NAAQS

[Primary and Secondary]

Designated area 1	Designation		Classification
	Date 2	Type	Date 2	Type
Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE		Nonattainment	7/30/2024	Serious.
New Castle County
*         *         *         *         *         *         *

* * * * *

3. In § 81.321, the table entitled “Maryland—2015 8-Hour Ozone NAAQS” is amended by revising the entry for “Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE” to read as follows:

§ 81.321

Maryland.

* * * * *

Maryland—2015 8-Hour Ozone NAAQS

[Primary and Secondary]

Designated area 1	Designation		Classification
	Date 2	Type	Date 2	Type
*         *         *         *         *         *         *
Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE		Nonattainment	7/30/2024	Serious.
Cecil County
*         *         *         *         *         *         *

* * * * *

4. In § 81.331, the table entitled “New Jersey—2015 8-Hour Ozone NAAQS” is amended by revising the entry for “Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE” to read as follows:

§ 81.331

New Jersey.

* * * * *

New Jersey—2015 8-Hour Ozone NAAQS

[Primary and Secondary]

Designated area 1	Designation		Classification
	Date 2	Type	Date 2	Type
*         *         *         *         *         *         *
Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE		Nonattainment	7/30/2024	Serious.
Atlantic County
Burlington County
Camden County
Cape May County
Cumberland County
Gloucester County
Mercer County
Ocean County
Salem County
*         *         *         *         *         *         *

* * * * *

5. In § 81.339, the table entitled “Pennsylvania—2015 8-Hour Ozone NAAQS” is amended by revising the entry for “Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE” to read as follows:

§ 81.339

Pennsylvania

* * * * *

Pennsylvania—2015 8-Hour Ozone NAAQS

[Primary and Secondary]

Designated area 1	Designation		Classification
	Date 2	Type	Date 2	Type
Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE		Nonattainment	7/30/2024	Serious.
Bucks County
Chester County
Delaware County
Montgomery County
Philadelphia County
*         *         *         *         *         *         *