Evaluation of the Impact of Fuel Hydocarbons and Oxygenates on Groundwater Resources

Tom Shih; Yue Rong; Thomas HarmonMel Suffet

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Evaluation of the Impact of Fuel Hydocarbons and Oxygenates on Groundwater Resources

机译：Evaluation of the Impact of Fuel Hydocarbons and Oxygenates on Groundwater Resources

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The environmental behavior of fuel oxygenates (other than methyl left-butyl ether MTBE)is poorly understood because few data have been systematically collected and analyzed.This study evaluated the potential for groundwater resource contamination by fuel hydrocarbons (FHCs)and oxygenates (e.g.,left-butyl alcohol TBA,teft-amyl methyl ether TAME,diisopropyl ether DIPE,ethyl left-butyl ether ETBE,and MTBE)by examining their occurrence,distribution,and spatial extent in groundwater beneath leaking underground fuel tank (LUFT)facilities,focusing on data collected from over 7200 monitoring wells in 868 LUFT sites from the greater Los Angeles,CA,region.Excluding the composite measure total petroleum hydrocarbons as gasoline (TPHG),TBA has the greatest site maximum (geometric mean)groundwater concentration among the study analytes;therefore,its presence needs to be confirmed at LUFT sites so that specific cleanup strategies can be developed.The alternative ether oxygenates (DIPE,TAME,and ETBE)are less likely to be detected in groundwater beneath LUFT facilities in the area of California studied and when detected are present at lower dissolved concentrations than MTBE,benzene,or TBA.Groundwater plume length was used as an initial indicator of the threat of contamination to drinking water resources.Approximately 500 LUFT sites were randomly selected and analyzed.The results demonstrate MTBE to pose the greatest problem,followed by TBA and benzene.The alternative ether oxygenates were relatively localized and indicated lesser potential for groundwater resource contamination.However,all indications suggest the alternative ether oxygenates would pose groundwater contamination threats similar to MTBE if their scale of usage is expanded.Plume length data suggest that in the absence of a completely new design and construction of the underground storage tank (UST)system,an effective management strategy may involve placing greater emphasis on UST programfor ensuring adequate enforcement and compliance with existing UST regulations.

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《Environmental Science & Technology: ES&T》 |2004年第1期|42-48|共7页
作者
Tom Shih; Yue Rong; Thomas HarmonMel Suffet;
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作者单位

Environmental Science and Engineering Program,University of California at Los Angeles,46-081 CHS,Box 951771,Los Angeles,California 90095-1772,Department of Civil and Environmental Engineering,University of California at Los Angeles,5732 G BH,Box 9515;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
原文格式 PDF
正文语种英语
中图分类环境化学;
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Evaluation of the Impact of Fuel Hydocarbons and Oxygenates on Groundwater Resources

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