SECTION 112.1. Definitions

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.

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(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:

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(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.

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Source Note: The provisions of this §112.1 adopted to be effective October 23, 1992, 17 TexReg 7085