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Sci Total Environ


Title:Characterization of roadway stormwater system residuals for reuse and disposal options
Author(s):Jang YC; Jain P; Tolaymat T; Dubey B; Singh S; Townsend T;
Address:"Department of Environmental Engineering and Sciences, University of Florida, Gainesville, FL 32611-6450, USA"
Journal Title:Sci Total Environ
Year:2010
Volume:20100218
Issue:8
Page Number:1878 - 1887
DOI: 10.1016/j.scitotenv.2010.01.036
ISSN/ISBN:1879-1026 (Electronic) 0048-9697 (Linking)
Abstract:"The chemical characterization of sediments accumulated in catch basins and stormwater ponds provides important information for assessing risks associated with management of these residuals upon removal of accumulated deposits in stormwater systems. In this study, over a period of 15 months, more than 150 residual samples were collected from 77 catch basin units and 22 stormwater ponds from 16 municipalities throughout the state of Florida. Concentrations (mg/kg) of metals and metalloids (arsenic, barium, cadmium, chromium, copper, lead, mercury, nickel, selenium, silver, and zinc) and trace organics (volatile organics, semi-volatile organics, herbicides, and pesticides) in the sediments were measured. In addition, the synthetic precipitation leaching procedure (SPLP) was utilized to evaluate pollutant leachability risk for a subset of the samples collected. Measured pollutant concentrations were compared to corresponding risk-based guidelines in Florida (i.e., Florida soil cleanup target levels) to assess potential human health risks of beneficial use of these residuals through land application. Leached concentrations were compared to risk-based water quality guidelines (i.e., Florida groundwater cleanup target levels) to examine the potential for groundwater contamination. Although several metals (arsenic, barium, chromium, copper, nickel, lead, and zinc) were routinely detected in the catch basin and stormwater pond sediments, their concentrations were generally lower than the Florida's risk-based cleanup target levels for soils. A small number of organochlorine compounds (e.g., 4,4'-DDE, 4,4'-DDT) were detected, but only in a limited number of the samples (less than 10%); leaching of trace organic pollutants above the Florida risk-based groundwater thresholds was rare. The results suggest that when land-applied or beneficially used, these residuals are not expected to pose a significant threat to human health or the environment and the results of this research will provide stormwater managers and environmental management authorities with a useful resource to examine proper disposal and beneficial use of catch basin and stormwater pond sediments"
Keywords:"Cities *Environmental Monitoring Florida Geologic Sediments/analysis/chemistry Hydrocarbons, Chlorinated/*analysis/toxicity Metals/*analysis/toxicity *Rain Refuse Disposal/*methods Risk Assessment Time Factors Water Movements Water Pollutants, Chemical/*a;"
Notes:"MedlineJang, Yong-Chul Jain, Pradeep Tolaymat, Thabet Dubey, Brajesh Singh, Shrawan Townsend, Timothy eng Research Support, Non-U.S. Gov't Netherlands 2010/02/19 Sci Total Environ. 2010 Mar 15; 408(8):1878-87. doi: 10.1016/j.scitotenv.2010.01.036. Epub 2010 Feb 18"

 
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