Cal. Pub. Contract Code § 22037
Notice inviting formal bids shall state the time and place for the receiving and opening of sealed bids and distinctly describe the project. The notice shall be published at least 14 calendar days before the date of opening the bids in a newspaper of general circulation, printed and published in the jurisdiction of the public agency; or, if there is no newspaper printed and published within the jurisdiction of the public agency, in a newspaper of general circulation which is circulated within the jurisdiction of the public agency, or, if there is no newspaper which is circulated within the jurisdiction of the public agency, publication shall be by posting the notice in at least three places within the jurisdiction of the public agency as have been designated by ordinance or regulation of the public agency as places for the posting of its notices. The notice inviting formal bids shall also be sent electronically, if available, by either facsimile or electronic mail and mailed to all construction trade journals specified in Section 22036. The notice shall be sent at least 15 calendar days before the date of opening the bids. In addition to notice required by this section, the public agency may give such other notice as it deems proper.
Ca. Pub. Cont. Code § 22037