Cal. Food & Agric. Code § 62710

The production base and the pool quota for milk shipped through a cooperative association shall belong to the individual producer but shall be assigned to the custody and control of the cooperative association and the production base and pool quota may be transferred only in accordance with the articles of incorporation, bylaws, or marketing agreements of such association. The cooperative association shall continue to be treated as a single producer, both for producer payment purposes and for pool settlement purposes.