Gypsum dewatering stack

Gypsum dewatering stack means any defined geographic area associated with a phosphoric acid manufacturing plant in which gypsum is disposed of or stored, other than within a fully enclosed building, container, or tank.

Source

40 CFR § 63.601

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Scoping language

Terms used in this subpart are defined in 63.2 of the Clean Air Act and in this section as follows:

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