California Code, Public Contract Code - PCC § 1104

No local public entity, charter city, or charter county shall require a bidder to assume responsibility for the completeness and accuracy of architectural or engineering plans and specifications on public works projects, except on clearly designated design build projects.  Nothing in this section shall be construed to prohibit a local public entity, charter city, or charter county from requiring a bidder to review architectural or engineering plans and specifications prior to submission of a bid, and report any errors and omissions noted by the contractor to the architect or owner.  The review by the contractor shall be confined to the contractor's capacity as a contractor, and not as a licensed design professional.