### Question
Can you define what supercompliant coal means?


### Answer
**Supercompliant coal** is defined as the following in *42 U.S.C. § 15991*:

> coal that contains less than 1.0 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**

