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Distribution and movement of trichloroethylene in ground water in the Tucson area, Arizona

January 1, 1994

In 1981, investigations of groundwater quality around Tucson International Airport revealed a number of wells that pumped water contaminated with trichloroethylene. Subsequent investigations resulted in the delineation of three distinct areas of contamination, the largest of which encompasses about 5 sq mi of aquifer surface area. Most of the contamination is in the top 100 ft of the saturated groundwater flow system. A fine-grained confining layer that is present in much of the contaminated area significantly limits the vertical movement of the chlorinated groundwater. Within the contaminated area, measured trichloroethylene concentrations were as high as 3,100 mg/L in 1984. Measured concentrations are highly variable vertically as well as horizontally. Future quantitative studies of contaminant movement may benefit from additional data collection and experiments to determine which contaminant transport and groundwater flow equations are most appropriate. (Author 's abstract)

Citation Information

Publication Year 1987
Title Distribution and movement of trichloroethylene in ground water in the Tucson area, Arizona
DOI 10.3133/wri864313
Authors S. A. Leake, R. T. Hanson
Publication Type Report
Publication Subtype USGS Numbered Series
Series Title Water-Resources Investigations Report
Series Number 86-4313
Index ID wri864313
Record Source USGS Publications Warehouse
USGS Organization