California Code, Health and Safety Code - HSC § 79875

(a) “Affiliate” means any entity that directly, or indirectly through one or more intermediaries, controls, is controlled by, or is under common control with, the responsible party owner. For purposes of this subdivision, “control” means the possession, direct or indirect, of the power to direct or cause the direction of the management and policies of an entity, or ownership of shares or interests in the entity possessing more than 50 percent of the voting power.

(b) “Qualified independent consultant” means either a geologist who is registered pursuant to Section 7850 of the Business and Professions Code or a professional engineer who is registered pursuant to Section 6762 of the Business and Professions Code.

(c) “Responsible party owner” means the owner of all or part of the site on January 1, 1993, or if all or a part of the site is transferred to a joint venture formed for purposes of development of the site, the owner of the site immediately prior to that transfer.

(d) “Site” means the site of the former Kaiser Steel Corporation steel mill located near the City of Fontana.