Hubris and Stupidity.
Like oil and water, they have difficulty mixing well. The waters of the Gulf are contaminated beyond mitigation attempts and while BP security is being sanctioned by the state authorities as the scale of this domino effect become known yet still the public is not being informed of the acute health hazards involved to abridge a panic.
The food and recreation exposure is a growing nightmare as, like the EPA's criminal negligence during the aftermath of 11 Sep. 2001 that has thousands of first responders either dead or dying by their complicity to this dire health threat.