California Code, Public Resources Code - PRC § 42968.20

(a) To comply with the requirements of this chapter, a producer shall establish and implement a stewardship program as part of a group of producers through membership in the producer responsibility organization.

(b) No later than 30 days after the effective date of regulations, each producer or the producer responsibility organization on behalf of the producers it represents shall notify the department, in writing, that the producer intends to register with the producer responsibility organization, which will submit a producer responsibility plan to the department.

(c) Each producer covered under the producer responsibility organization shall register with the producer responsibility organization in accordance with the procedures and requirements established by the producer responsibility organization and shall comply with those procedures and requirements.