40 CFR 81.344 : Protection Of Environment (§ 1.1 To Parts 1851-1899) — (§ 81.1 To Appendix A To Part 81) — Environmental Protection Agency (Continued) (§ 81.1 To Appendix A To Part 81) — Air Programs (Continued) (§ 81.1 To Appendix A To Part 81) — Designation Of Areas For Air Quality Planning Purposes (§ 81.1 To Appendix A To Part 81) — Section 107 Attainment Status Designations (§ 81.300 To § 81.356) — Texas.

Texas - 1971 Sulfur Dioxide NAAQS (Primary and Secondary)

¹ EPA designation replaces State designation.

Texas - Carbon Monoxide

¹ This date is November 15, 1990, unless otherwise noted.

Texas - Ozone (1-Hour Standard) ²

¹ This date is October 18, 2000, unless otherwise noted.

² The 1-hour ozone standard is revoked effective June 15, 2005 for all areas in Texas except the San Antonio area where it is revoked effective April 15, 2009.

⁴ Attainment date is extended to July 20, 2016.

Texas-PM-10 Nonattainment Areas

¹ This date is November 15, 1990, unless otherwise noted.

Texas - 1997 Annual PM2.5 NAAQS

(Primary and secondary)

^a Includes Indian Country located in each county or area, except as otherwise specified.

¹ This date is 90 days after January 5, 2005, unless otherwise noted.

Texas - 2012 Annual PM2.5 NAAQS

[Primary]

¹ Includes areas of Indian country located in each county or area, except as otherwise specified.

² This date is April 15, 2015, unless otherwise noted.

Texas - 1997 Annual 24-Hour PM2.5 NAAQS

[Primary and secondary]

^a Includes Indian Country located in each county or area, except as otherwise specified.

¹ This date is 90 days after January 5, 2005, unless otherwise noted.

Texas - 2006 24-Hour PM2.5 NAAQS

[Primary and secondary]