30 Tex. Admin. Code § 112.7
(b) If a source has an effective stack height less than the standard effective stack height determined for stack effluent rates less than or equal to 4,000 scfm by the equation:
Attached Graphic
then, the allowable emission limit in subsection (a) of this section must be reduced by multiplying it by the short-stack reduction factor.
Source Note:The provisions of this §112.7 adopted to be effective October 23, 1992, 17 TexReg 7085.