Cal. Elec. Code § 14421
Unless the county elections official has directed the precinct board to seal the ballot container and record information pursuant to subdivision (c) of Section 14420, the precinct board shall group voted ballot cards and voted separate write-in ballots, as directed by the elections official, and place them in containers. The board shall also place spoiled and void ballots, if any, in containers as directed by the elections official. All of these ballots, along with the containers for voted ballot cards, shall be placed in one or more boxes, which shall then be sealed and delivered as soon as possible to the receiving centers or central counting places with the unused ballots, supplies, and other materials as directed by the elections official.
Ca. Elec. Code § 14421