### Question
How is the "barrel" defined?


### Answer
The term **barrel** is defined in *42 U.S.C. § 9601* as follows -

> forty-two United States gallons at sixty degrees Fahrenheit

#### Citation:
  - *42 U.S.C. § 9601*
  - Heading: **CHAPTER 103-COMPREHENSIVE ENVIRONMENTAL RESPONSE, COMPENSATION, AND LIABILITY > SUBCHAPTER I-HAZARDOUS SUBSTANCES RELEASES, LIABILITY, COMPENSATION**

