meanwhile...
Thad W. Allen, the retired Coast Guard admiral who commands the spill response, said that if an area of low pressure over Puerto Rico develops into a tropical depression or storm and heads into the gulf, all the ships at the well site 50 miles off the Louisiana coast might have to depart for safer waters. Government weather experts are evaluating the situation, he said.
If the forecast is for a storm, “we could be looking at 10 to 14 days” when no work could be done on a relief well that is considered the ultimate way to seal the BP well, Admiral Allen said. Containment projects and other work would have to be suspended as well.
No decision had been made yet whether the well, which is now sealed as part of a test to see whether it can hold pressure, would be left in that condition, said Admiral Allen. After nearly three months gushing oil, the well has not leaked since last Thursday, when valves on a cap atop it were closed to start the test. But if officials decided it was too risky to leave the well under pressure during a storm, the valves would be reopened and oil would once again spew into the gulf.
Admiral Allen said it was possible that the well would be left shut but closely monitored by remotely operated submersibles for as long as possible. The submersibles, and their relatively fast-moving support ships, would probably only be away from the site for 3 or 4 days, he said.
http://www.nytimes.com/2010/07/22/us/22spill.html?_r=1