1997b-667 2005 additives adverseeffects agricultureandenergy airpollutants antitrustinvestigations automobileindustryandtrade automobiles biomassenergy butylmethylether corruptpractices costs dwellings economicaspects energyconsumption environmentalaspects fueltrade heatingandventilation hurricanekatrina inprocess methylethers motorfuels petroleum petroleumasfuel petroleumindustryandtrade petroleumproducts pricefixing prices qv81n276t1996 refining rulesandpractice taxation toxicity toxicology unitedstates