Cal. Health & Safety Code § 25217.3
(b) A person transporting paint collected in accordance with this article shall use a bill of lading to document the transportation of the paint from collection locations, or any interim locations, to a consolidation site, whenever the transportation involves a change in ownership of the paint. A copy of the bill of lading shall be kept by the originating location, transporter, and destination of the paint for a period of at least three years and shall include all of the following information: