Report on the effects of a likely change in U.S. policy on reformulated gasoline, specifically examining the results of an increased role for ethanol, and a decreased role for MTBE. From National Governors' Association.

Student project scientifically examines the addition of Methyl-tert-butyl-ether (MTBE) to gasoline. Includes an environmental risk analysis of the compound.

U.S. EPA compilation of studies and experiences with in situ and ex situ treatment of groundwater and drinking water contaminated with MTBE.

An article on the oxygenates MTBE and TAME and how they have led to contamination of major aquifers, including the Chalk aquifer of southern England.

U.S. EPA collection of fact sheets, technical documents, computer models, data, Congressional testimony, and other materials about the reformulation of gasoline by adding MTBE, ethanol, or other oxygenates to reduce air pollution.

Searchable database of technical reference citations, by US Geological Survey.

Presentations heard by panel, panel report (1999), and related Internet links.

Identification of key issues related to assessing and managing the potential health and environmental risks of oxygenate contamination of water. Oxygenates are chemicals added to fuels ("oxyfuels") to increase the oxygen content and thereby reduce emissions.

California Energy Commission study on methyl tertiary-butyl ether (MTBE).