IC 8-1-27-2 : "Clean Air Act Amendments of 1990" defined

Sec. 2. As used in this chapter, "Clean Air Act Amendments of 1990" refers to Title IV, Acid Deposition Control, of the federal Clean Air Act Amendments of 1990 (P.L.101-549) and regulations adopted under the federal Clean Air Act Amendments of 1990.
As added by P.L.76-1991, SEC.1.