Toward the beginning of the spill, when the public began to get an idea of how toxic Corexit 9527 was and began demanding that something else be used, the EPA sent a letter to BP giving them 24 hours to find another chemical dispersant on their approved list of products on the National Contingency Plan (NCP) for Oil and Hazardous Chemical Spills.
The EPA did not say a safer product on the NCP list. They demanded another chemical dispersant.
The EPA did this knowing that because of the monopoly it has created for Exxon’s Corexit over the past 25 years, (they have never allowed any other product to be used on U.S. navigable waters when an actual spill happens, despite the fact that there are numerous other products on the NCP list that are less toxic, less expensive and demonstrably more effective), that BP would have to come back saying that the only product that was stockpiled in enough quantities for deployment on a spill of this size was Corexit.
The “solution” was to acquiesce by switching to Corexit 9500.
The public was appeased, but duped, because they didn’t know that per the science and chemical information regarding 9500, 9500 is only slightly less toxic than 9527 by itself, but once it is applied to oil, the combination becomes more toxic than the combination of 9527 and oil. The idea that scientists are just now finding how destructive Corexit is, is totally inaccurate.
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