California Code, Government Code - GOV § 68055

(a) It shall be the responsibility of any person owning or operating any establishment or public place in which litter receptacles are required by this chapter to procure, place, and maintain such receptacles at his own expense on the premises in accordance with the provisions of this chapter.

(b) The responsibility for the removal of litter from receptacles placed at publicly-owned places shall remain with the public agencies.  Removal of litter from receptacles placed on private property shall remain with the owner of the property or, in cases where the owner is not in actual possession of the premises, with the tenant thereof.