Approval and Promulgation of Air Quality Implementation Plans; Texas; Infrastructure and Interstate Transport for the 2008 Lead National Ambient Air Quality Standards
Under the Federal Clean Air Act (CAA) the Environmental Protection Agency (EPA) is approving a State Implementation Plan (SIP) submission from the State of Texas for the 2008 Lead (Pb) National Ambient Air Quality Standards (NAAQS). The submittal addresses how the existing SIP provides for implementation, maintenance, and enforcement of the 2008 Pb NAAQS (infrastructure SIP or i-SIP). This i-SIP ensures that the State's SIP is adequate to meet the state's responsibilities under the CAA, including the four CAA requirements for interstate transport of Pb emissions.