Citation

72 FR 59213

Canonical document for this Federal Register citation.

Approval and Promulgation of Air Quality Implementation Plans; Pennsylvania; Redesignation of the Mercer County Portion of the Youngstown-Warren-Sharon, OH-PA 8-Hour Ozone Nonattainment Area to Attainment and Approval of the Area's Maintenance Plan and 2002 Base Year Inventory Friday, October 19, 2007 72 FR 59213