The Agency shall grant provisional variances whenever it is found, upon presentation of adequate proof, that compliance on a short term basis with any rule or regulation, requirement or order of the Board, or with any permit requirement, would impose an arbitrary or unreasonable hardship [415 ILCS 5/35(b) ]
Ill. Admin. Code tit. 35, § 104.302
Amended at 29 Ill. Reg. 8803, effective June 8, 2005