### Question
What is the definition of underground storage tank?


### Answer
The definition of **underground storage tank** is as follows in *42 U.S.C. § 6991b*:

> given to it in section 6991 of this title, except that such term does not include tank combinations or more than a single underground pipe connected to a tank.

#### Citation:
  - *42 U.S.C. § 6991b*
  - Heading: **CHAPTER 82-SOLID WASTE DISPOSAL > SUBCHAPTER IX-REGULATION OF UNDERGROUND STORAGE TANKS**

