Operating day

Operating day means any 24-hour period beginning at 12:00 midnight during which the kiln produces any amount of clinker. For calculating the 30-day rolling average emissions, kiln operating days do not include the hours of operation during startup or shutdown.

Source

40 CFR § 63.1341

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Scoping language

All terms used in this subpart that are not defined in this section have the meaning given to them in the CAA and in subpart A of this part.

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