Press Briefing by National Incident Commander Admiral Thad Allen, August 9, 2010:
Elizabeth Cook: Yes. My question, Admiral Allen, is that there are persistent rumors from fishermen in Louisiana that dispersant is still being sprayed both offshore and in the marshes of Barataria Bay. And I have a twofold question. Has dispersant ever been sprayed in Barataria Bay? And is it still being used? And also, if it isn't being used, when was the last day that dispersant was used by BP?
Thad Allen: We have not used dispersant since the capping stack was put on. I believe that was the 15th of July. To my knowledge, there have been no dispersants used in Barataria Bay, but I will not state that unequivocally until I go back and check.
But I would tell you, there are no dispersants being used at this time. They're used under very strict protocols offshore. And I will go back and check just for the record if they were ever used early on in the response in Barataria Bay, but my sense is they were not.
Elizabeth Cook: Right. Barataria Bay, though, is not offshore. It's pretty close to the marshes. And I'm surprised, sir, that you don't know whether or not it's been used in Barataria Bay.
Thad Allen: Well, early on in the response... I'm saying I don't believe it has been, but I don't want to state it unequivocally until I go back and check the records.
Unequivocal = admitting of no doubt or misunderstanding
Meaning, Allen is not admitting no doubt... So he has his doubts about not using dispersants near shore.