30 Tex. Admin. Code § 113.1
The words and terms of this subchapter have the meanings assigned to them in the Texas Clean Air Act (TCAA). If no meanings are assigned to them by the TCAA, they shall have the meanings ascribed to them by this section. If a word or term of this subchapter is not defined either in the TCAA or this section, they will have the meaning commonly ascribed to them in the field of air pollution control. Section 111(d) state plan--A plan submitted by the state to the EPA Administrator which establishes standards of performance for any existing source for any air pollutant for which air quality criteria have not been issued or which is not included on a list published under FCAA §108(a), or emitted from a source category which is regulated under FCAA §112 or §112(b), but to which a standard of performance under FCAA §111 would apply if such existing source were a new source, and provides for the implementation and enforcement of such standards of performance.
Source Note:The provisions of this §113.1 adopted to be effective June 23, 1998, 23 TexReg 6504.