### Question
Can you define what alternative method of compliance means?


### Answer
**Alternative method of compliance** is defined as the following in *42 U.S.C. § 7651a*:

> a method of compliance in accordance with one or more of the following authorities:


(A) a substitution plan submitted and approved in accordance with subsections [3](#7651a_3_target) 7651c(b) and (c) of this title

#### Citation:
  - *42 U.S.C. § 7651a*
  - Heading: **CHAPTER 85-AIR POLLUTION PREVENTION AND CONTROL > SUBCHAPTER IV&ndash;A-ACID DEPOSITION CONTROL**

