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The AAPG/Datapages Combined Publications Database

Environmental Geosciences (DEG)

Abstract

 

DOI: 10.1046/j.1526-0984.2001.84003.x

MTBE Previous HitSoilNext Hit Concentrations Relative to Other Gasoline Constituents at Contaminated Sites

YUE RONG

Environmental Specialist California Regional Water Quality Control Board, Los Angeles Region, 320 West 4th Street, Suite 200, Los Angeles, CA 90013

ABSTRACT

This study describes the results of a statistical analysis on methyl tertiary butyl ether (MTBE) concentration distributions in Previous HitsoilNext Hit and groundwater and MTBE relative to other gasoline constituents in Previous HitsoilNext Hit based on data collected in Los Angeles, California. The MTBE Previous HitsoilNext Hit concentration data are studied in two aspects. The first aspect involves MTBE concentration in Previous HitsoilNext Hit as it relates to MTBE groundwater concentration and Previous HitsoilNext Hit type at individual sites. The second involves the correlation between MTBE and other gasoline constituents (benzene, toluene, ethyl-benzene, xylenes [BTEX], and total petroleum hydrocarbons as gasoline [TPHg]) in Previous HitsoilNext Hit at individual sites and at particular Previous HitsoilNext Hit boring locations, respectively. The results of statistical analyses indicate that the MTBE concentration in Previous HitsoilNext Hit correlated poorly with the underlying groundwater concentration and Previous HitsoilNext Hit type. There was no statistically significant difference in MTBE Previous HitsoilNext Hit concentration between types of soils. MTBE Previous HitsoilNext Hit concentration also correlated poorly with BTEX and TPHg, whereas BTEX and TPHg in Previous HitsoilNext Hit correlated well with one another. Despite the generally poor correlation between MTBE and other gasoline constituents at individual sites, good correlation was observed between MTBE and BTEX based on data obtained at individual Previous HitsoilNext Hit borings. In particular, a correlation coefficient of 0.82 was observed between MTBE and BTEX at 13 of the 28 Previous HitsoilTop borings studied. Uncertainties associated with the data used for analyses are assessed to pinpoint the shortcomings of the data analysis and to enlighten future studies.

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