||Gasoline Composition Regulations Affecting LUST Sites.
L. W. Weaver ;
L. R. Exum ;
L. M. Prieto
||Environmental Protection Agency, Athens, GA. National Exposure Research Lab.
Underground storage tanks ;
Chemical compostion ;
Contaminated sites ;
Groundwater pollution ;
MTBE(Methyl tert-butyl ether) ;
Methyl tert-butyl ether ;
Leaking underground storage tanks ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||Passage of the Clean Air Act Amendments in 1990 imposed requirements on gasoline composition in the United States. Impacts to ground water are affected by the provisions that required oxygenated additives and limited benzene concentration. Reformulated and oxygenated gasoline were required to contain an oxygenated additive at 2.0 wt % and 2.7 wt %, respectively. In most cases, the additive initially was methyl tert-butyl ether (MTBE). The amount of benzene in both reformulated and conventional gasoline was limited: reformulated gasoline contains less than 1 % benzene by volume, while benzene levels in conventional gasoline were set by producer baselines. The allowable benzene levels vary among these producers and, unlike reformulated gasoline, are not tied to use at specific locations in the U.S. In 2000, states began to pass bans on MTBE, other ethers, and/or alcohols; consequently, production and use of MTBE in reformulated gasoline declined. The Energy Policy Act of 2005 removed the oxygenate requirement from reformulated gasoline and industry responded by removing ethers from U.S. gasoline, with some limited exceptions.
||Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at email@example.com. NTIS is located at 5301 Shawnee Road, Alexandria, VA, 22312, USA.
|PUB Date Free Form
||68D; 97R; 97K; 99B; 91A; 43F