(a) Description: The areas within a line 500 meters from each point on the outer edge of each structure. The structures are approximately 120 meters apart. The position of the center of each structure is: Platform Ellen, 33-34-57" N, 118-07-42" W; and Platform Elly, 33-35-00" N, 118-07-40" W.
(b) Regulations: No vessel may enter or remain in this safety zone except the following: (1) An attending vessel serving either structure, (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]