Cal. Gov. Code § 14827.3

The Department of General Services may exempt a state agency from the requirement of advertising in the California State Contracts Register where the contract is necessary for the immediate preservation of life or state property, where the contract is with another state agency or local and where the Director of General Services determines that the state’s best interest would be better served by an exemption. The Department of General Services may, likewise, exempt a class or classes of contracts, where it appears to be in the state’s best interest to do so. The department will identify the exemptions and publish them prominently in each issue of the California State Contracts Register.