it appears that the application of the sub sea dispersants actually working. the oil in the immediate vicinity of the well and the ships and rigs working in the area is diminished from previous oh,s. reporter: now, the head of the epa says she s closely monitoring how these chemicals are affecting the environment and if there is concern that serious damage is being done, the project could be halted. harris: i mentioned the government is pressuring british petroleum to say how much it will pay for all of this. an arm of the government, so to speak, interior secretary ken salazar was there and i understand he had some reaction to what he toured today. reporter: ken salazar was at a number of locations today. one of which was a rehab center for wild life. we ve got pictures of the interior secretary standing by as they tried to save the life of a brown pelican. so far we know that here in