Cal. Fish & Game Code § 2074.6

The department shall promptly commence a review of the status of the species concerned in the petition. Within 12 months of the date of publication of a notice of acceptance of a petition for consideration by the commission pursuant to paragraph (2) of subdivision (a) of Section 2074.2, the department shall provide a written report to the commission, based upon the best scientific information available to the department, which indicates whether the petitioned action is warranted, which includes a preliminary identification of the habitat that may be essential to the continued existence of the species, and which recommends management activities and other recommendations for recovery of the species.