### Question
How is the "coal combustion byproducts" defined?


### Answer
The term **coal combustion byproducts** is defined in *42 U.S.C. § 13364* as follows -

> the residues from the combustion of coal including ash, slag, and flue gas desulfurization materials

#### Citation:
  - *42 U.S.C. § 13364*
  - Heading: **CHAPTER 134-ENERGY POLICY > SUBCHAPTER VI-COAL > Part C-Other Coal Provisions**

