Oregon Revised Statutes Public Facilities, Contracting and Insurance § 279A.210

(a) The administering contracting agency's solicitation and award process for the original contract is an open and impartial competitive process and uses source selection methods substantially equivalent to those specified in ORS 279B.055, 279B.060 or 279B.085 or uses a competitive bidding process substantially equivalent to the competitive bidding process in ORS chapter 279C;

(b) The administering contracting agency's solicitation and the original contract or price agreement identifies the cooperative procurement group or each participating purchasing contracting agency and specifies the estimated contract requirements; and

(c) No material change is made in the terms, conditions or prices of the contract between the contractor and the purchasing contracting agency from the terms, conditions and prices of the original contract between the contractor and the administering contracting agency.