California Code, Health and Safety Code - HSC § 112155

(a) “Shellfish” means native or nonnative bivalve mollusks, which include oysters, rock scallops, clams, and mussels, either fresh or frozen, and either shucked or in the shell.

(b) “Shellstock” means shellfish which remain in their shells.

(c) “Growing area” means any offshore ocean, coastal estuarine, or freshwater area that may be classified by the department for natural shellfish growth or artificial shellfish propagation and includes open seawater systems.

(d) “Approved area” means a shellfish-growing area not adversely affected by sewage or other wastes.

(e) “Conditionally approved area” means a shellfish-growing area that may be occasionally affected by sewage or other wastes.

(f) “Prohibited area” means a shellfish-growing area not certified because of its proximity to a waste discharge or because the area is influenced by other detrimental environmental factors.

(g) “Restricted area” means a shellfish-growing area subjected to a limited degree of pollution which makes it unsafe to harvest shellfish for direct marketing but where harvesting for relaying or depuration may be permitted.

(h) “Other wastes” means wastes, such as, but not limited to, animal, industrial, radiological, and agricultural wastes which would render shellfish unsafe or unfit for human consumption.

(i) “Department” means the State Department of Health Services.

(j) “Director” means the State Director of Health Services.

(k) “Person” includes any individual, partnership, corporation, limited liability company, and association.

(l) “Closed area” means an area that the shellfish taken therefrom have been declared to be unsafe or unfit for human consumption.