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Summer boating main source of lake's MTBE

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California Agriculture 52(4):7-7.

Published July 01, 1998

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Using a Sierra Nevada lake as a laboratory, UC Davis scientists have found that summertime recreational boating is the primary source of MTBE in the lake's water, and that the contamination most likely stems from unburned fuel in engine exhaust, not spills.

The study at Donner Lake is part of an overall effort to learn more about the sources, fate and transport of the gasoline oxygenate additive in California's water.

Researchers, including John Reuter and Brant Allen of UC Davis' Tahoe Research Group, found that 86% of the variation in the seasonal trend of total lake MTBE levels was explained by recreational boating. Neither urban runoff nor precipitation contributed significantly, the researchers concluded, based on low concentrations of MTBE in the lake during spring months.

MTBE (methyl tert-butyl ether) is classified by the U.S. Environmental Protection Agency as a possible human carcinogen. The Donner Lake findings are among the first to show conclusively the impact of motorized boating on MTBE surface-water concentrations. The results have been reviewed by the U.S. Geological Survey and are being used in scientific discussions of MTBE nationwide.

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Summer boating main source of lake's MTBE

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Summer boating main source of lake's MTBE

Share using any of the popular social networks Share by sending an email Print article
Share using any of the popular social networks Share by sending an email Print article

Authors

Editors

Publication Information

California Agriculture 52(4):7-7.

Published July 01, 1998

PDF  |  Citation  |  Permissions

Full text

Using a Sierra Nevada lake as a laboratory, UC Davis scientists have found that summertime recreational boating is the primary source of MTBE in the lake's water, and that the contamination most likely stems from unburned fuel in engine exhaust, not spills.

The study at Donner Lake is part of an overall effort to learn more about the sources, fate and transport of the gasoline oxygenate additive in California's water.

Researchers, including John Reuter and Brant Allen of UC Davis' Tahoe Research Group, found that 86% of the variation in the seasonal trend of total lake MTBE levels was explained by recreational boating. Neither urban runoff nor precipitation contributed significantly, the researchers concluded, based on low concentrations of MTBE in the lake during spring months.

MTBE (methyl tert-butyl ether) is classified by the U.S. Environmental Protection Agency as a possible human carcinogen. The Donner Lake findings are among the first to show conclusively the impact of motorized boating on MTBE surface-water concentrations. The results have been reviewed by the U.S. Geological Survey and are being used in scientific discussions of MTBE nationwide.

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