Just who’s in charge here? The EPA tells BP to use a “less toxic” dispersant. BP’s response? Screw you:

“BP has told the Environmental Protection Agency that it cannot find a safe, effective and available dispersant to use instead of Corexit, and will continue to use that chemical application to help break up the growing spill in the Gulf of Mexico.

BP was responding to an EPA directive Thursday that gave BP 24 hours to identify a less toxic alternative to Corexit — and 72 hours to start using it — or provide the Coast Guard and EPA with a “detailed description of the alternative dispersants investigated, and the reason they believe those products did not meet the required standards.”

BP spokesman Scott Dean said Friday that BP had replied with a letter “that outlines our findings that none of the alternative products on the EPA’s National Contingency Plan Product Schedule list meets all three criteria specified in yesterday’s directive for availability, toxicity and effectiveness.”

Dean noted that “Corexit is an EPA pre-approved, effective, low-toxicity dispersant that is readily available, and we continue to use it.”

Your move, EPA.