Chemical Spill Exposure Assessment |
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Authors: | Stuart M Brown Abraham Silvers |
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Institution: | CH2M HILL, P.O. Box 91500, Bellevue, Washington 98009-2050.;Energy Analysis and Environment Division, Electric Power Research Insitute, Palo Alto, California 94303. |
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Abstract: | POSSM, the PCB On-Site Spill Model, is a contaminant transport model developed to predict environmental concentrations associated with a chemical spill. The model predicts daily changes in chemical concentrations on a spill site (e.g., in soil and on vegetation) and losses of chemical due to volatilization, surface runoff/soil erosion, and leaching to groundwater. Spill areas consisting of soil/vegetation and/or an impervious surface (e.g., asphalt and concrete) can be analyzed, as can different spill cleanup practices. POSSM is used to analyze exposure levels associated with a hypothetical capacitor spill. While the model was developed for PCB spills, it is generally applicable to a number of organic compounds. |
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Keywords: | Modeling transport and fate exposure assessment PCB spill cleanup |
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