this story, including whether or not those two relief wells supposed to be ready by early to mid-august, whether they will get the job done. thanks very much. thad allen says he believes bp is still on track to complete those relief wells in august. they are seen as the best hope of permanently plugging the leak. bp chief operating officer says he believes the relief wells will in fact work. he told cnn the company has other options. >> reporter: let's talk about contingencies. let's say the first relief well, second, none work. what's the plan here? >> well, there's two pieces to that. one is this containment system we're building and the second is tieing that system back to other production facilities that wouldn't actually have the issues associated with a severe storm. so the backstop is hooking this well and the containment system