(a) After the date the initial stack test is required or completed (whichever is earlier), you must meet the limitations in paragraphs (1) and (2) of this subsection.
  (1) The opacity limitation is 10 percent (6-minute average), except as described in paragraph (2) of this subsection.
  (2) The opacity limitation is 35 percent (6-minute average) during the startup period that is within the first 30 minutes of operation.
(b) Except during malfunctions, the requirements of this division apply at all times, and each malfunction must not exceed 3 hours.

Source Note: The provisions of this §113.2258 adopted to be effective May 14, 2009, 34 TexReg 2771