What are the requirements for a contract between a Trade Contractor and the General Contractor?

Refer to Rules 3.C. (xiii) and 4.C. (vi). General Contactors subject to the use of CCA 1 or as amended by mutual agreement. General Contactors must contract with the Trade Contractor they have selected through their bid submission, the BOBS system or in the absence of naming a bidder, the lowest compliant bidder as defined by the BOBS Rules.