(a) Description: The area within a line 500 meters from each point on the structure's outer edge. The position of the center of the structure is 34-23-27" N, 120-07-14" W.
(b) Regulations: No vessel may enter or remain in this safety zone except for the following: (1) An attending vessel, (2) a vessel under 100 feet in length overall not engaged in towing, or (3) a vessel authorized by the Commander, Eleventh Coast Guard District. [CCGD 11-79-02, 47 FR 39679, Sept. 9, 1982; 48 FR 33263, July 21, 1983]