Liquids dripping
Liquids dripping means any visible leakage from the seal including dripping, spraying, misting, clouding, and ice formation. Indications of liquids dripping include puddling or new stains that are indicative of an existing evaporated drip.
Source
40 CFR § 63.1020
Scoping language
All terms used in this part shall have the meaning given them in the Act and in this section.