Cal. Public Contract Code § 6826

(a) The transportation entity, in each design-build request for proposals, may identify specific types of subcontractors that must be included in the design-build entity statement of qualifications and proposal. All construction subcontractors that are identified in the proposal shall be afforded all the protections of Chapter 4 (commencing with Section 4100) of Part 1 of Division 2. (b) In awarding subcontracts not listed in the request for proposals, the design-build entity shall do all of the following: (1) Provide public notice of availability of work to be subcontracted in accordance with the publication requirements applicable to the competitive bidding process of the transportation entity. (2) Provide a fixed date and time on which the subcontracted work will be awarded. (3) Establish reasonable qualification criteria and standards. (4) Provide that the subcontracted construction work shall be awarded either on a best value basis or to the lowest responsible bidder. For construction work awarded on a best value basis, the design-build entity shall evaluate all bids utilizing the factors described in paragraph (1) of subdivision (e) of Section 6824, and shall award the contract to the bidder determined by the design-build entity to have offered the best value. (c) Subcontractors awarded subcontracts under this chapter shall be afforded all the protections of Chapter 4 (commencing with Section 4100) of Part 1 of Division 2.