(a) In specific cases the executive director may approve a variance from the requirements of this subchapter due to special conditions, if the variance is not contrary to safeguarding the health, welfare, and physical property of the people and to protecting the environment. A variance may not be approved concerning the procedural requirements of this subchapter, including application procedures and the filing of reports, or concerning the provisions of §330.607 of this title (relating to Air Quality Requirements).     
      (b) A request for a variance must be submitted in writing to the executive director. The request may be made in an application for a registration. Any approval of a variance must be in writing from the executive director.     
     Source Note:        The provisions of this §330.603 adopted to be effective March 27, 2006, 31 TexReg 2502