California Code, Elections Code - ELEC § 9004

(a) Upon receipt of the text of a proposed initiative measure, and after the public review period provided for in Section 9002, the Attorney General shall prepare a circulating title and summary of the chief purposes and points of the proposed measure.  The circulating title and summary shall not exceed 100 words.  The Attorney General shall also provide a unique numeric identifier for each proposed initiative measure.  The circulating title and summary shall be prepared in the manner provided for the preparation of ballot titles and summaries in Article 5 (commencing with Section 9050), the provisions of which, in regard to the preparation, filing, and settlement of ballot titles and summaries, are applicable to the circulating title and summary.

(b) The Attorney General shall provide a copy of the circulating title and summary and its unique numeric identifier to the proponents and to the Secretary of State within 15 days after receipt of the fiscal estimate or opinion prepared by the Department of Finance and the Legislative Analyst pursuant to Section 9005.  The date the copy is delivered or mailed to the proponents is the “official summary date.”

(c) Upon receipt of the circulating title and summary from the Attorney General, the Secretary of State shall, within one business day, notify the proponents and county elections official of each county of the official summary date and provide a copy of the circulating title and summary to each county elections official.  This notification shall also include a complete schedule showing the maximum filing deadline, and the certification deadline by the counties to the Secretary of State.