Air Plan Approval; New Jersey; Redesignation of the Warren County 1971 Sulfur Dioxide Nonattainment Area to Attainment and Approval of the Area's Maintenance Plan

On November 15, 2021, the New Jersey Department of Environmental Protection (NJDEP) submitted a request for the Environmental Protection Agency (EPA) to approve the redesignation of the New Jersey portion of the Northeast Pennsylvania-Upper Delaware Valley Interstate Air Quality Control Region (Warren County, New Jersey) from nonattainment to attainment for the 1971 Sulfur Dioxide (SO<INF>2</INF>) National Ambient Air Quality Standards (NAAQS). In conjunction with its redesignation request, NJDEP submitted a State Implementation Plan (SIP) revision containing a limited maintenance plan and its associated contingency measures for the Warren County 1971 SO<INF>2</INF> Nonattainment Area (Warren County SO<INF>2</INF> NAA) to ensure that attainment of the SO<INF>2</INF> NAAQS will continue to be maintained. The EPA is taking final action to approve the requested SIP revision and to redesignate the Warren County SO<INF>2</INF> NAA from nonattainment to attainment for the 1971 SO<INF>2</INF> NAAQS.