Cal. Pub. Res. Code § 42293

(a) On or before March 1, 1999, and annually thereafter, each manufacturer subject to this chapter shall submit a report to the board certifying that it has complied with Section 42291 during the preceding calendar year, certifying the name and physical location of each of its suppliers of recycled plastic postconsumer material for use in the manufacture of plastic trash bags, or other products manufactured with recycled plastic postconsumer material in compliance with this chapter, and containing the information obtained pursuant to Section 42292 and any other information that the board may require by regulation. Any manufacturer that processes its own recycled plastic postconsumer material shall certify to the board that it is the supplier of the material.
(b) On or before October 1, 2001, the board shall survey manufacturers subject to this section and, notwithstanding Section 7550.5 of the Government Code, report back to the Legislature. The survey shall do all of the following:
1. (1) Identify the name and physical location of suppliers certified by manufacturers pursuant to subdivision (a).
2. (2) Identify the quantity of recycled plastic postconsumer material provided by suppliers within the state and the quantity of the material provided by suppliers outside the state.
3. (3) Provide recommendations regarding recycled plastic postconsumer material content requirements based on the availability of that material.
4. (4) Identify gauge thickness of all regulated bags.
5. (5) Determine national production versus production of a separate line for California.