Cal. Rev. & Tax. Code § 7652.7
(a) Each pipeline operator and vessel operator shall prepare and file with the board a report in the form as prescribed by the board, which may include, but not be limited to, electronic media showing, for the calendar month, or that monthly period ended during the calendar month as the board may authorize, all of the following:
(4) Any other information required by the board for the proper administration of this part.
The pipeline operator and vessel operator shall file the report on or before the last day of the month following the monthly period to which it relates. To facilitate the administration of this part, the board may require the filing of the reports for other than monthly periods. Reports shall be authenticated in a form or pursuant to methods as may be prescribed by the board.