Volume and extent of the Deepwater Horizon oil spill Gulf Coast that prevented vessels from coming within "of booming operations, boom, or oil spill response operations". In a press briefing, USCG admiral Thad Allen said the new regulation was related to safety issues. On CNN's "360", host Anderson Cooper rejected the motivation for the restrictions outright. The Civil Air Patrol also monitored the spill on behalf of the USCG. 27 May 2010 Volume and extent of the Deepwater Horizon oil spill The "Deepwater Horizon" oil spill was discovered on the afternoon of 22 April 2010 when a large oil slick began to spread at the former rig site. According
Montara oil spill 1 November. The West Triton jackup drilling rig arrived at the Montara Field in an attempt to plug the oil leak on 11 September 2009. Oil and gas producer, Woodside Petroleum Ltd offered to assist PTTEPAA in cleaning up the oil spill with the use of a rig closer to the spill site. However, PTTEPAA rejected the Woodside offer on the basis of "safety reasons". The Woodside rig was a semisubmersible drilling rig and, as it floats on the sea surface, was not deemed as a suitable platform for the relief well. A jackup rig was required because it could