Large-scale skimmer begins testing in Gulf, CNN, July 4, 2010:
Meanwhile, Environmental Protection Agency scientists... [are conducting] toxicity testing on eight of the dispersants used in the Gulf. ...
[T]he agency has said it plans to conduct more tests of the toxicity of the dispersant when mixed with crude.
A CNN analysis... showed that the chemical dispersants keep flowing into the Gulf of Mexico at virtually unchanged levels despite the EPA's May 26 order to BP to "significantly" scale back.