(a) § 4a-71 shall not apply to the following: (1) Interagency or intergovernmental transactions; (2) amounts payable to employees or prospective employees of state departments or agencies as reimbursement for expenses; (3) claims subject to a good faith dispute, if before the date of timely payment, notice of the dispute is: (A) Sent by certified mail; (B) personally delivered; or (C) sent in accordance with any procedure in the contract; (4) contracts entered into before October 1, 1984; (5) contracts related to highway or road construction, reconstruction or maintenance; or (6) claims, contracts or projects that are to be paid for exclusively with federal funds.

(b) As used in subdivision (3) of subsection (a) of this section, “good faith dispute” means: (1) A contention by the state that goods delivered or services rendered were: (A) Of less quantity or quality than ordered or specified by contract; (B) faulty; or (C) installed improperly; or (2) any other reason giving cause for the withholding of payment by the state until such dispute is settled.