Ill. Admin. Code tit. 44, § 1150.1325
a) Small Contracts
The provisions of Sections 1150.1000, 1150.1100, and 1150.1200 of this Part do not apply to architectural, engineering, and land surveying contracts of less than $25,000.
b) The provisions of Sections 1150.1000, 1150.1100, and 1150.1200 of this Part do not apply to the procurement of architectural, engineering and land surveying services by the Department:
(Source: Added at 22 Ill. Reg. 15581, effective August 17, 1998)