EPA determined that the existing Cross-State Air Pollution Rule Update for the 2008 Ozone NAAQS fully addresses certain states' obligations under the good neighbor provision of the CAA regarding interstate pollution transport for the 2008 ozone NAAQS.

EPA proposed to determine that the Cross-State Air Pollution Rule Update for the 2008 ozone NAAQS fully addresses certain states' obligations under CAA §110(a)(2)(D)(i)(I) regarding interstate pollution transport for the 2008 ozone NAAQS.