Effects of highway-deicer application on ground-water quality in a part of the Calumet Aquifer, Northwestern Indiana - Twin Cities Campus

  • Watson L
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Abstract

The effects of highway-deicer application on ground-water quality were studied at a site in northwestern Indiana using a variety of geochem- ical indicators. Site characteristics such as high snowfall rates; large quantities of applied deicers; presence of a high-traffic highway; a homoge- neous, permeable, and unconfined aquifer; a shallow water table; a known ground-water-flow direction; and minimal potential for other sources of chloride and sodium to complicate source interpretation were used to select a study area where ground water was likely to be affected by deicer application. Forty-three monitoring wells were installed in an unconfined sand aquifer (the Calumet aquifer) near Beverly Shores in north- western Indiana. Wells were installed along two transects that approximately paralleled ground- water flow in the Calumet aquifer and crossed US–12. US–12 is a highway that receives Indiana’s highest level of maintenance to maintain safe driving conditions. Ground-water quality and water-level data were collected from the moni- toring wells, and precipitation and salt-application data were compiled from 1994 through 1997

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Authors

  • Lee. Watson

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