Cal. Pub. Res. Code § 42053
(a)
(c) The fee schedule required pursuant to subdivision (a) shall include all of the following:
(d) A PRO shall structure the fee schedule required pursuant to subdivision (a), delineated by covered material category and based on the following factors:
(1) The costs to ensure each covered material category meets the requirements of this chapter. Covered material that is easier and less expensive to recycle or compost or that is designed to be recycled into a similar covered material or a material that is easier to be composted shall be subject to lower fees. The costs may include all of the following:
(e) The fee required pursuant to subdivision (a) shall be adjusted using malus fees or credits for participant producers, with those adjustments based on any of the following, as applicable: