### Question
What does existing solid waste incineration unit mean?


### Answer
**Existing solid waste incineration unit** has the following meaning in *42 U.S.C. § 7429*:

> a solid waste unit which is not a new or modified solid waste incineration unit

#### Citation:
  - *42 U.S.C. § 7429*
  - Heading: **CHAPTER 83-ENERGY EXTENSION SERVICE > SUBCHAPTER I-PROGRAMS AND ACTIVITIES > Part A-Air Quality and Emission Limitations**

