(a) Conduct initial stack tests for the pollutants listed in §113.2139 of this title (relating to What types of stack tests must I conduct?) by 180 days after your final compliance date.
(b) Conduct annual stack tests for the same pollutants after the initial stack test. Conduct each annual stack test no later than 13 months after the previous stack test.

Source Note: The provisions of this §113.2141 adopted to be effective May 14, 2009, 34 TexReg 2771