Abstract

Fuels stored in underground tanks often contaminate urban soil and water. A geographic information system (GIS) mapped 1068 underground fuel tanks in Denton County, Texas, USA. Tank locations were compared with soil shrink–swell and corrosivity potentials. Higher percentages of reported leaking tanks were observed in expansive and corrosive soils. This study illustrates the utility of GIS for overlaying layers of data that affect underground tank integrity. Such overlays could find appropriate locations for new tanks, survey existing tanks for potential leak hazards, and assess hazards posed by leaking tanks based upon soil permeability.

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