Tank

Tank means a stationary unit that is constructed primarily of nonearthen materials (such as wood, concrete, steel, fiberglass, or plastic) which provide structural support and is designed to hold an accumulation of liquids or other materials.

Source

40 CFR § 63.681

Scoping language

All terms used in this subpart shall have the meaning given to them in this section, 40 CFR 63.2 of this part, and the Act.