### Question
How is the "compliant coal" defined?


### Answer
The term **compliant coal** is defined in *42 U.S.C. § 15991* as follows -

> 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-ENERGY POLICY, 2005 > SUBCHAPTER IV-COAL > Part C-Federal Coal Leases**

