(1) In addition to the general applicability of chapter 173-400 WAC to all emission sources, all primary aluminum reduction plants are required to meet the emissions standards of this chapter. Specific emissions standards and requirements listed in this chapter shall supersede the general emissions standards and general requirements in chapter 173-400 WAC.

(2) All primary aluminum reduction plants are required to meet applicable National Emissions Standards for Hazardous Air Pollutants (NESHAP). New primary aluminum reduction plants must also meet federal New Source Performance Standards (NSPS).

(3) Primary aluminum reduction plants are also subject to chapter 173-481 WAC.

(4) Any federal regulations cited in this rule refer to the version of the federal regulation adopted by reference in WAC 173-400-025.