California Code, Water Code - WAT § 13167.5

(a) The state board or the regional board, as applicable, shall provide notice and a period of at least 30 days for public comment prior to the adoption of any of the following:

(b) The notification required by subdivision (a) may be provided by mailing a draft of the waste discharge requirements, water reclamation requirements, time schedule order, or order issued pursuant to Section 13320 to each person who has requested notice of the specific item, or by posting a draft of the respective requirements or order on the official Internet site maintained by the state board or regional board, and providing notice of that posting by electronic mail to each person who has requested notice.

(c) This section does not require the state board or the regional board to provide more than one notice or more than one public comment period prior to the adoption of waste discharge requirements, water reclamation requirements, a time schedule order, or an order issued pursuant to Section 13320.