The purpose of this Part is to provide for the participation by the Office of General Services in the Council of Contracting Agencies established by Executive Order No. 125, dated May 22, 1989, in order to enhance the availability of and access to information relevant to the statutory determination by the Office of General Services of the responsibility and reliability of low bidders for the award of construction contracts, and certain service contracts, and the approval of subcontractors relative to such contracts.