The EPA is updating the materials submitted by New Mexico that are incorporated by reference (IBR) into the State Implementation Plan (SIP). The regulations affected by this update have been previously submitted by the State agency and approved by EPA. This update affects the SIP materials that are available for public inspection at the Office of the Federal Register (OFR), the Air and Radiation Docket and Information Center located in Waterside Mall, Washington, D.C., and the Regional Office.