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Page 54
Suggested Citation:"List of Acronyms and Symbols." National Academies of Sciences, Engineering, and Medicine. 2010. Assessing Soil and Groundwater Impacts of Chemical Mixture Releases from Hazardous Materials Transportation Incidents. Washington, DC: The National Academies Press. doi: 10.17226/14472.
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Page 54
Page 55
Suggested Citation:"List of Acronyms and Symbols." National Academies of Sciences, Engineering, and Medicine. 2010. Assessing Soil and Groundwater Impacts of Chemical Mixture Releases from Hazardous Materials Transportation Incidents. Washington, DC: The National Academies Press. doi: 10.17226/14472.
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Page 55

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54 L I S T O F A C R O N Y M S A N D S Y M B O L S AAR Association of American Railroads API American Petroleum Institute ATSDR Agency for Toxic Substances & Disease Registry BTEX benzene, toluene, ethylbenzene, and xylene BTS Bureau of Transportation Statistics CAMEO Computer-Aided Management of Emergency Operations CAS # Chemical Abstract Service registry number, which is unique identification for chemicals. It is also referred to as CAS RN. CFS Commodity Flow Survey CHEMTREC Chemical Transportation Emergency Center DGAC Dangerous Goods Advisory Council DNAPL Dense Non-aqueous Phase Liquid DOE U.S. Department of Energy DOT U.S. Department of Transportation EAWAG Swiss Federal Institute for Environmental Science and Technology EPA U.S. Environmental Protection Agency EPIWIN Estimation Program Interface Suite FDEP Florida Department of Environmental Protection FGCU Florida Gulf Coast University HAZMAT Hazardous Materials HMCRP Hazardous Materials Cooperative Research Program HSDB Hazardous Substance Data Bank HSSM Hydrocarbon spill screening model IAFC International Association of Fire Chiefs IRIS Integrated Risk Information System ISI Institute for Scientific Information IUPAC International Union of Pure and Applied Chemistry KOPT Kinematic Oily Pollutant Transport LFER Linear Free Energy Relationship LNAPL Light non-aqueous phase liquids LSER Linear Solvation Energy Relationship LSST Linear Solvation Strength Theory MHMI Managing Hazardous Materials Incident MIT Massachusetts Institute of Technology MOFAT Multiphase Flow & Multicomponent Transport Model MSDS Material Safety Data Sheets NAPL Non-aqueous Phase Liquid

55 NIST National Institute of Standards and Technology NOS Not Otherwise Specified NTSB National Transportation Safety Board OPP Office of Pesticide Programs TRB Transportation Research Board TSG Transient Source Gaussian Plume UN/NA # United Nations or North American Identification Numbers Aerobic t1/2 The half-life time of a component under aerobic conditions. The smaller the half-life time, the faster the chemical decay. Anaerobic t1/2 The half life time of a component under anaerobic conditions Da Diffusion coefficient in air Dw Diffusion coefficient in water Dm Diffusion coefficient in mixture foc Fraction organic carbon I Hydraulic gradient (ft/ft) K Hydraulic conductivity (ft/yr) Ki, am Partition coefficient between air and the mixture, which is relevant for phase equilibrium and the concentration in air Ki, aw Partition coefficient between air and water (unitless) Ki, mw Partition coefficient between the mixture and water, which is relevant for phase equilibrium and the solubility in water Ki, oc Partition coefficient of a component between organic carbon and water, which is relevant for adsorption of a NAPL to sediment and the retardation factor of a NAPL travel velocity Kow Partition coefficient between octanol and water MW Molecular weight of the component, which is unique for each chemical ρ Density σ Surface tension of a NAPL against air σow The interfacial tension between the mixture and water P Vapor Pressure S The solubility in water η Dynamic viscosity σi,j As the co-solvency power of the solvent for the compound i in co-solvent j γ Activity Coefficient Cs Concentration in Source Zone (mg/L) C0 Concentration in Source Zone at t=0 (mg/L) αx Longitudinal groundwater dispersivity (ft) αy Transverse groundwater dispersivity (ft) αz Vertical groundwater dispersivity (ft) λ First-order decay coefficient for dissolved contaminants (yr−1) ks First-order decay term for source concentration (yr−1) (no decay for the source concentration based on the assumption of continuous source plume) θe Effective soil porosity θ− Soil total porosity R Constituent retardation factor

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Assessing Soil and Groundwater Impacts of Chemical Mixture Releases from Hazardous Materials Transportation Incidents Get This Book
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TRB’s Hazardous Materials Cooperative Research Program (HMCRP) Report 2: Assessing Soil and Groundwater Impacts of Chemical Mixture Releases from Hazardous Materials Transportation Incidents explores a tool to help 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 tool can also be used to determine whether shipping certain chemicals separately or in mixtures will have significantly higher costs if an incident occurs and to estimate relative costs and timeframes of cleanup after an incident occurs.

The chemical mixture tool, a user guide, and the contractor’s final report for the project that produced HMCRP Report 2 are available on a CD-ROM that is included with the printed publication.

The CD-ROM included as part of HMCRP Report 2 is also available for download from TRB’s website as an ISO image. Links to the ISO image and instructions for burning a CD-ROM from an ISO image are provided below.

Help on Burning an .ISO CD-ROM Image

Download the .ISO CD-ROM Image

(Warning: This is a large file that may take some time to download using a high-speed connection.)

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