United States Department of Transportation
i
Hazard Identification for Human and Ecological Effects of Sodium Chloride Road Salt
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2007-07-01
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By Siegel, Lori
[PDF-227.69 KB]
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Alternative Title:I-93 Chloride TMDL Study: Hazard Identification for Human and Ecological Effects of Sodium Chloride Road Salt
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Abstract:The New Hampshire Department of Environmental Services (DES) requested an evaluation of the human and ecological risks associated with the application of sodium chloride (NaCl) road salt to roadways. NaCl is the major de-icing agent used in NH to mitigate ice-related accidents. However, it may also threaten the integrity of human and ecological health. This paper presents a synthesis and interpretation of available literature on the effects of both sodium chloride road salt, including those of the sodium cation and chloride anion in the dissolved phase, on humans, wildlife, aquatic life, and vegetation. The assessment addresses the routes by which receptors may be exposed and the exposure thresholds that induce toxicity. Such information is used to determine that the State’s current chloride water quality standard of 230 mg Cl-/L is adequate and thus should be used as the appropriate target for TMDL studies.
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Content Notes:Obtained Corporate Contributor from rebuildingI93.com
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