Affected unit means a unit that is subject to any Acid Rain emissions reduction requirement or Acid Rain emissions limitation under 72.6 or part 74 of this chapter.
The terms used in this part, in parts 73, 74, 75, 76, 77 and 78 of this chapter shall have the meanings set forth in the Act, including sections 302 and 402 of the Act, and in this section as follows: