Unless specifically defined in the Texas Clean Air Act
(TCAA), §382.003, or in the rules of the board, the terms used by the
board have the meanings commonly ascribed to them in the field of air pollution
control. In addition to the terms which are defined by the TCAA, the following
words and terms, when used in this chapter, shall have the following meanings,
unless the context clearly indicates otherwise.
(1) Continuous emissions
monitoring--Sampling, analyzing, and recording at least one measurement of
sulfur dioxide concentration in each 15-minute period from the effluent of each
affected process or the emission control system serving each affected
process.
(2) Effective stack
height--A value in feet calculated by the following equation.
Attached
Graphic
(3)
In-stack concentration--The concentration of a pollutant inside the stack
measured in parts per million by volume (ppmv) referenced at 0% stack gas
oxygen on a dry basis averaged over a period of one hour with oxygen determined
by the equation:
Attached
Graphic
(4)
Secondary metal recovery facility--A facility which recovers metals and alloys
from new and used scrap and dross. It does not mean assembling, sorting, and
breaking up scrap metal, without smelting and refining.
(5) Short-stack reduction factor--The factor
by which the allowable emission rate must be multiplied if the source has an
effective stack height less than the standard effective stack height. The
short-stack reduction factor is calculated by the following equation.
Attached
Graphic
