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Assessing Soil and Groundwater Impacts of Chemical Mixture Releases from Hazardous Materials Transportation Incidents (2010) / Chapter Skim
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Summary
Pages 1-5

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From page 1...
... Specifically, the developed tool will assess, classify, predict, and quickly communicate fate and transport characteristics of chemical mixtures released into the soil and groundwater as a result of hazardous materials transportation incidents. The research team has completed 16 months of research on HMCRP Project 06, "Soil and Groundwater Impacts of Chemical Mixture Releases from Hazardous Materials Transportation Incidents." A white paper submitted in June 2009 summarizes the preliminary efforts (Phase I, Tasks 1 to 4 outlined in the contract)
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From page 2...
... Consistent with the contract scope, the research team designed the tool using the typology table collected in Phase I as the database and refined the tool using the selected mixtures and existing screening models. The second phase of activity incorporated the data and opinions garnered in Phase I to develop the tool itself.
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From page 3...
... A simplified version of Domenico's model, designed by the research team, is included to simulate chemical fate and transport in groundwater. Without the availability of external screening models, the research team screening model can be applied directly to simulate the transport of a hazardous mixture in groundwater.
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From page 4...
... For example, regulators and scientists could use the tool to estimate the properties of novel additives in future fuel formulations and thereby provide key inputs for determining the transportation facility upgrade and assessing environmental transport of these compounds using external screening models. Tool Limitations and Future Research Recommendations The main limitation of the tool is that it cannot be used for all chemical substances contained in the database of approximately 740 components derived from literary research and interviews with professional personnel based on hazardous material classification and commodity flow survey and incident reports.
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From page 5...
... Although the color-coding function is designed in the tool to compare the fate and transport characteristics of pure chemicals versus chemical mixtures in order to rank the relative impacts to soil and groundwater, future research is needed to compare the concentrations in subsurface to EPA clean up levels and to consider the cost and time frame of active remediation compared to natural attenuation. This module may be designed to estimate the cost of the most commonly used remedial approaches (e.g., groundwater pump-treat, air sparging, soil vapor extraction, chemical oxidation, and enhanced natural attenuation)
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Key Terms

  • chemical mixtures
  • hazardous materials
  • screening model
  • mixture tool
  • screening models

  • transport properties
  • emergency response
  • pure chemicals
  • transportation incidents
  • chemical fate

  • hazardous material
  • input mixture
  • mixture releases
  • external screening
  • transport data

  • transport characteristics
  • mixtures released
  • tool using
  • selected mixtures
  • groundwater impacts

  • incident reports
  • materials transportation
  • unsaturated zone
  • output table
  • critical fate

  • key parameters
  • microsoft excel
  • significantly affect
  • flow survey
  • anaerobic conditions


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