got the good side but not the bad side which was a wonderful thing to see happen. >> we have congressman mark who said that bp carpet bombed the ocean with these chemicals and the coast guard allowed them to do it. what's your reaction to that? >> well, i think early on they might have been carpet bombing but i think near the end they started to look at the national research council's recommendations and make sure they didn't use it unless they could kbet it applied early on. after about four or five hours the oil weathers and then it loses its volatiles so i think they were following the rules closely. >> that means using these must be done with the greatest ef facy at the beginning of the spill? >> yes. for example when they were applying it at the well head that was the way to do it.