TITLE 35: ENVIRONMENTAL PROTECTION
SUBTITLE B: AIR POLLUTION
CHAPTER II: ENVIRONMENTAL PROTECTION AGENCY
PART 283 GENERAL PROCEDURES FOR EMISSIONS TESTS AVERAGING
AUTHORITY: Implementing and authorized by Section 4 of the Environmental Protection Act [415 ILCS 5/4].
SOURCE: Old Part repealed at 13 Ill. Reg. 9501, effective June 12, 1989; new Part adopted at 24 Ill. Reg. 14428, effective September 11, 2000; expedited correction at 25 Ill. Reg. 9657, effective September 11, 2000.