LIST OF VARIABLES WITH COMMON EXAMPLE UNITS

a = dispersivity, m aF = soil-to-skin adherence factor, mgs/cm2 aL = longitudinal dispersivity, m aflow = first-order rate constants for contaminant flow out of a volume, 1/s asettling = first-order rate constant for removal by settling, 1/s A = radioactivity, Bq or decays/s A = total cross-sectional area of the medium, m2 Askin = area of skin exposed, cm2 Bfish = bioaccumulation factor for fish, L/kgfish Bv = bioaccumulation factor, kgs/kgv,wet C = contaminant concentration, = average concentration, µg/m3 Ca = contaminant concentration in air, Cbeef = contaminant concentration in beef, mgc/kgbeef Cfish = contaminant concentration in food, mgc/kgfish Cfood = contaminant concentration in food, mgc/kgfood Cg,n = Gaussian plume concentration for the nth set of hourly meteorological measurements, µg/m3 Cmax = maximum contaminant concentration, µg/m3 Cmedium = contaminant concentration in medium, mgc/kgmedium or, mgc/Lmedium Cmilk = contaminant concentration in milk, mgc/Lmilk Corganism = contaminant concentration in organism, mgc/kgorganism = sector-averaged concentration, µg/m3 Cs = contaminant concentration in solid (or soil) phase, mgc/kgs Cs,ext = extractable soil concentration, mgc/kgs Css = steady-state contaminant concentration, CT = total contaminant concentration, Cv = contaminant concentration in vegetation, mgc/kgv,wet = contaminant concentration in vegetation due to deposition on foliage, mgc/kgv,wet = contaminant concentration in vegetation due to uptake from the soil, mgc/kgv,wet Cw = contaminant concentration in the aqueous phase, mgc/Lw = time-integrated concentration, = contaminant destruction rate density, mgc/(Lw s) = settling rate density, mgc/(Lw s) dm = representative grain size (diameter), µm D = absorbed dose (radiation), Gy = J/kg D = dispersion coefficient, m2/s = dose rate, mg/(kg d) = true average daily dose rate, mg/(kg d) = lifetime average daily dose rate, mg/(kg d) DH = mechanical dispersion coefficient, m2/s DM = molecular diffusion coefficient, m2/s DT = turbulent dispersion coefficient, m2/s DL = longitudinal dispersion coefficient, m2/s DM = effective molecular diffusion coefficient for porous media, m2/s Ds = stack diameter, m DT = total dose, mg/kg DT,R = absorbed dose to organ or tissue (T) from radiation (R), Gy = J/kg e = removal efficiency E = effective dose (radiation), Sv = effective dose rate, Sv/s ET = total effective dose (radiation), Sv Ex = (surface water) longitudinal dispersion coefficient, m2/s fabs = dermal absorption fraction fi,j = fraction of time that winds blow into the given sector under stability j fv = fraction of the contaminant that is intercepted by the vegetation fmilk = fraction of contaminant transferred to milk fox = fraction of sulfur oxidized to SO2 in the combustion process fs = fraction sorbed fs = fraction (by weight) of sulfur in the coal, kgS/kgcoal F = buoyancy flux, m4/s3 Fbeef = beef transfer factor, d/kgbeef Fmilk = milk transfer factor, d/kgmilk = contaminant generation rate density, mgc/(L s) = total (aqueous and solid phase) contaminant generation rate density, mgc/(L s) g = acceleration due to gravity, m2/s h = stack height, m he = effective release height, m hpr = plume rise height, m hs = physical release height, m H = hydraulic head, m H = height, m I = contaminant inventory, kg I = total amount of radioactivity taken into the body during the exposure, Bq = irrigation rate, m/yr = contaminant intake rate, mgc/d (for chemicals) or Bq/d (for...