### Question
How does the law define compliant coal?


### Answer
Under *42 U.S.C. § 15991*, **compliant coal** is defined as:

> coal that contains not less than 1.0 and not more than 1.2 pounds of sulfur dioxide per million Btu

#### Citation:
  - *42 U.S.C. § 15991*
  - Heading: **CHAPTER 149-NATIONAL ENERGY POLICY AND PROGRAMS > SUBCHAPTER IV-COAL > Part C-Federal Coal Leases**

