Model year

Model year means one of the following things:
(1) For freshly manufactured equipment and engines (see definition of “new nonroad engine,” paragraph (1)), model year means one of the following:
(i) Calendar year.
(ii) Your annual new model production period if it is different than the calendar year.

Source

40 CFR § 1048.801

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Scoping language

The following definitions apply to this part. The definitions apply to all subparts unless we note otherwise. All undefined terms have the meaning the Act gives to them. The definitions follow:

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