Approval and Promulgation of Air Quality Implementation Plans; Texas; Redesignation of the Collin County Area to Attainment the 2008 Lead Standard

Pursuant to the Federal Clean Air Act (CAA or the Act), the Environmental Protection Agency (EPA) is taking direct final action to determine the Collin County Lead (Pb) National Ambient Air Quality Standard (NAAQS) Nonattainment Area (NAA) has attained the 2008 Pb NAAQS and to approve a redesignation request for the area. In directly approving the redesignation request, EPA is also taking direct final action to approve as revisions to the Texas State Implementation Plan (SIP) a maintenance plan for the 2008 Pb NAAQS in the NAA submitted November 2, 2016, an attainment demonstration for the 2008 Pb NAAQS submitted October 10, 2012, and a second 10-year maintenance plan for the 1978 Pb NAAQS submitted September 15, 2009.