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Describes the purpose of the Parameter Source Catalog Find pertinent source documents by selecting the desired model/code, environmental media, exposure pathway, parameter name, and/or contaminant Search the environmental data sources using keywords or phrases.  Search by author, title, report number, and/or abstract. Provides information on a parameter used in a model/code, including the expected parameter units, the environmental media most strongly associated with the parameter, and the exposure pathways dependent on the parameter Determine the parameters used by a model/code in an assessment by selecting the model/code and an exposure pathway Information on the model/codes supported. Latest version information, code manual listings, and contact information.

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DandD
EPA PRGs
GENII 2
RESRAD

Pathway-Specific Parameters

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Parameters Used in Pathway(s):

absolute humidity (GENII 2)
adult beef consumption rate (EPA PRGs)
adult egg consumption rate (EPA PRGs)
adult fish consumption rate (EPA PRGs)
adult fruit consumption rate (EPA PRGs)
adult inhalation rate (EPA PRGs)
adult milk consumption rate (EPA PRGs)
adult poultry consumption rate (EPA PRGs)
adult soil intake rate (EPA PRGs)
adult vegetable consumption rate (EPA PRGs)
air inhalation period (GENII 2)
air inhalation rate (GENII 2)
Andelman volatilization factor (EPA PRGs)
animal feed dry/wet ratio for beef animal feed (GENII 2)
animal feed dry/wet ratio for beef animal forage (GENII 2)
animal feed dry/wet ratio for egg animal feed (GENII 2)
animal feed dry/wet ratio for milk animal feed (GENII 2)
animal feed dry/wet ratio for milk animal forage (GENII 2)
animal feed dry/wet ratio for poultry animal feed (GENII 2)
animal feed growing period for beef animal feed (GENII 2)
animal feed growing period for beef animal forage (GENII 2)
animal feed growing period for egg animal feed (GENII 2)
animal feed growing period for milk animal feed (GENII 2)
animal feed growing period for milk animal forage (GENII 2)
animal feed growing period for poultry animal feed (GENII 2)
animal feed irrigation rate for beef animal feed (GENII 2)
animal feed irrigation rate for beef animal forage (GENII 2)
animal feed irrigation rate for egg animal feed (GENII 2)
animal feed irrigation rate for milk animal feed (GENII 2)
animal feed irrigation rate for milk animal forage (GENII 2)
animal feed irrigation rate for poultry animal feed (GENII 2)
animal feed irrigation time for beef animal feed (GENII 2)
animal feed irrigation time for beef animal forage (GENII 2)
animal feed irrigation time for egg animal feed (GENII 2)
animal feed irrigation time for milk animal feed (GENII 2)
animal feed irrigation time for milk animal forage (GENII 2)
animal feed irrigation time for poultry animal feed (GENII 2)
aquatic animal bioaccumulation factor (RESRAD BIOTA)
aquatic food (crustaceans) consumption rate (GENII 2)
aquatic food (fish) consumption rate (GENII 2)
aquatic food (mollusks) consumption rate (GENII 2)
aquatic food (water plants) consumption rate (GENII 2)
area correction factor (EPA PRGs)
average annual wind speed (RESRAD)
average daily rain rate (GENII 2)
b parameter of unsaturated zone (RESRAD)
beef intake rate of forage (DandD)
beef intake rate of grain (DandD)
beef intake rate of hay (DandD)
beef intake rate of soil (DandD)
beef intake rate of water (DandD)
beef transfer factor (DandD)
bioaccumulation factors for crustacea and mollusks (RESRAD)
bioaccumulation factors for fish (RESRAD)
bioaccumulation in freshwater crustacea (GENII 2)
bioaccumulation in freshwater fish (GENII 2)
bioaccumulation in freshwater mollusk (GENII 2)
bioaccumulation in saltwater crustacea (GENII 2)
bioaccumulation in saltwater fish (GENII 2)
bioaccumulation in saltwater mollusk (GENII 2)
bldg foundataion radon diffusion coefficient (RESRAD)
bldg foundation density (RESRAD)
bldg foundation total porosity (RESRAD)
bldg foundation volumetric water content (RESRAD)
boating days (GENII 2)
breathing rate (DandD)
building air exchange rate (RESRAD)
building indoor area factor (RESRAD)
C-12 concentration in contaminated soil (RESRAD)
C-12 concentration in local water (RESRAD)
C-12 evasion flux rate from soil (RESRAD)
C-14 evasion flux rate from soil (RESRAD)
child beef consumption rate (EPA PRGs)
child egg consumption rate (EPA PRGs)
child fish consumption rate (EPA PRGs)
child fruit consumption rate (EPA PRGs)
child inhalation rate (EPA PRGs)
child milk consumption rate (EPA PRGs)
child poultry consumption rate (EPA PRGs)
child soil intake rate (EPA PRGs)
child vegetable consumption rate (EPA PRGs)
consumption rate for beef animal feed (GENII 2)
consumption rate for beef animal forage (GENII 2)
consumption rate for egg animal feed (GENII 2)
consumption rate for milk animal feed (GENII 2)
consumption rate for milk animal forage (GENII 2)
consumption rate for poultry animal feed (GENII 2)
contaminated radon diffusion coefficient (RESRAD)
contaminated zone b parameter (RESRAD)
contaminated zone erosion rate (RESRAD)
contaminated zone field capacity (RESRAD)
contaminated zone hydraulic conductivity (RESRAD)
contaminated zone total porosity (RESRAD)
cover erosion rate (RESRAD)
cover radon diffusion coefficient (RESRAD)
cover total porosity (RESRAD)
cover volumetric water content (RESRAD)
crop consumption period for leafy vegetables for age group # 1 (GENII 2)
crop consumption rate for leafy vegetables for age group # 1 (GENII 2)
crop yield for beef forage (DandD)
crop yield for beef grain (DandD)
crop yield for beef hay (DandD)
crop yield for fruits (DandD)
crop yield for grains (DandD)
crop yield for layer hen forage (DandD)
crop yield for layer hen grain (DandD)
crop yield for layer hen hay (DandD)
crop yield for leafy vegetables (DandD)
crop yield for milk cow forage (DandD)
crop yield for milk cow grain (DandD)
crop yield for milk cow hay (DandD)
crop yield for poultry forage (DandD)
crop yield for poultry grain (DandD)
crop yield for poultry hay (DandD)
crop yield for roots (DandD)
daily external ground exposure time (GENII 2)
daily plume immersion exposure time (GENII 2)
delay time in water distribution system (GENII 2)
density of contaminated soil/sediment layer (GENII 2)
density of contaminated zone (RESRAD)
density of cover material (RESRAD)
density of saturated zone (RESRAD)
density of unsaturated zone (RESRAD)
deposition velocity from soil to plant surfaces (GENII 2)
depth of roots (RESRAD)
depth of soil mixing layer (RESRAD)
diet - beef (DandD)
diet - egg (DandD)
diet - fish (DandD)
diet - fruit (DandD)
diet - grain (DandD)
diet - leafy (DandD)
diet - milk (DandD)
diet - poultry (DandD)
diet - roots (DandD)
distribution coefficient (RESRAD)
distribution coefficient (RESRAD BIOTA)
domestic water use (DandD)
drinking water ingestion period for age group # 1 (GENII 2)
drinking water ingestion rate for age group # 1 (GENII 2)
drinking water intake (RESRAD)
dry deposition retention fraction to plants (GENII 2)
dry foliar interception fraction for fodder (RESRAD)
dry foliar interception fraction for leafy (RESRAD)
dry foliar interception fraction for non-leafy (RESRAD)
dry soil bulk density (EPA PRGs)
dry/wet ratio for fruits (GENII 2)
dry/wet ratio for grains (GENII 2)
dry/wet ratio for leafy vegetables (GENII 2)
dry/wet ratio for root vegetables (GENII 2)
duration of boating event (GENII 2)
duration of shoreline use events (GENII 2)
duration of showering event (GENII 2)
duration of swimming event (GENII 2)
dust-loading (DandD)
effective porosity of unsaturated zone (RESRAD)
eggs transfer factor (DandD)
equivalent threshold value of windspeed at 7m (EPA PRGs)
evapotranspiration coefficient (RESRAD)
exposure frequency (EPA PRGs)
external gamma shielding factor (RESRAD)
feed to animal meat transfer factor (GENII 2)
feed to animal milk transfer factor (GENII 2)
feed to egg transfer factor (GENII 2)
feed to poultry transfer factor (GENII 2)
field capacity of unsaturated zone (RESRAD)
fish bioaccumulation factor (DandD)
fish consumption (RESRAD)
fish intake rate (EPA PRGs)
floor dust (DandD)
fodder intake for beef cattle (EPA PRGs)
fodder intake for dairy cattle (EPA PRGs)
fodder intake rate for poultry (EPA PRGs)
fodder intake rate for swine (EPA PRGs)
fraction of a day indoor inhalation occurs (GENII 2)
fraction of a day inhalation occurs (GENII 2)
fraction of time spent indoors (GENII 2)
fraction of time spent outdoors (GENII 2)
fraction of vegetation carbon absorbed from air (RESRAD)
fraction of vegetation carbon absorbed from soil (RESRAD)
fraction of vegetative cover (EPA PRGs)
fraction water content (EPA PRGs)
freqency of showering event (GENII 2)
frequency of boating event (GENII 2)
frequency of shoreline use (GENII 2)
frequency of swimming event (GENII 2)
fruit transfer factor (DandD)
fruit, vegetable, and grain consumption (RESRAD)
gamma shielding factor (EPA PRGs)
gardening breathing (DandD)
gardening dust concentration (DandD)
grain transfer factor (DandD)
growing period for beef forage (DandD)
growing period for beef grain (DandD)
growing period for beef hay (DandD)
growing period for fruits (DandD)
growing period for fruits (GENII 2)
growing period for grains (DandD)
growing period for grains (GENII 2)
growing period for layer hen forage (DandD)
growing period for layer hen grain (DandD)
growing period for layer hen hay (DandD)
growing period for leafy (DandD)
growing period for leafy vegetables (GENII 2)
growing period for milk cow forage (DandD)
growing period for milk cow grain (DandD)
growing period for milk cow hay (DandD)
growing period for poultry forage (DandD)
growing period for poultry grain (DandD)
growing period for poultry hay (DandD)
growing period for root vegetables (GENII 2)
growing period for roots (DandD)
growing season for fodder (RESRAD)
growing season for leafy (RESRAD)
growing season for non-leafy (RESRAD)
humidity in air (RESRAD)
hydraulic conductivity (EPA PRGs)
hydraulic conductivity of unsaturated zone (RESRAD)
hydraulic gradient (EPA PRGs)
inadvertent soil ingestion rate (GENII 2)
indoor air inhalation period (GENII 2)
indoor air inhalation rate (GENII 2)
indoor breathing (DandD)
indoor dilution factor (EPA PRGs)
indoor dust concentration (DandD)
indoor exposure time fraction (EPA PRGs)
indoor shielding (DandD)
indoor shielding factor (GENII 2)
indoor time fraction (RESRAD)
indoor volatilization factor for radionuclides (GENII 2)
indoor volatilization factor for radon (GENII 2)
infiltration rate (DandD)
ingestion rate of water while showering for age group # 1 (GENII 2)
ingestion rate of water while swimming for age group # 1 (GENII 2)
inhalation rate (EPA PRGs)
inhalation rate (RESRAD)
inhalation shielding factor (RESRAD)
intake rate of water for beef animal (GENII 2)
intake rate of water for egg animal (GENII 2)
intake rate of water for milk animal (GENII 2)
intake rate of water for poultry animal (GENII 2)
interception fraction for beef forage (DandD)
interception fraction for beef grain (DandD)
interception fraction for beef hay (DandD)
interception fraction for fruits (DandD)
interception fraction for grains (DandD)
interception fraction for layer hen forage (DandD)
interception fraction for layer hen grain (DandD)
interception fraction for layer hen hay (DandD)
interception fraction for leafy (DandD)
interception fraction for milk cow forage (DandD)
interception fraction for milk cow grain (DandD)
interception fraction for milk cow hay (DandD)
interception fraction for poultry forage (DandD)
interception fraction for poultry grain (DandD)
interception fraction for poultry hay (DandD)
interception fraction for roots (DandD)
irrigation (RESRAD)
irrigation rate for fruits (GENII 2)
irrigation rate for grains (GENII 2)
irrigation rate for leafy vegetables (GENII 2)
irrigation rate for residential land (GENII 2)
irrigation rate for root vegetables (GENII 2)
irrigation time for fruits (GENII 2)
irrigation time for grains (GENII 2)
irrigation time for leafy vegetables (GENII 2)
irrigation time for residential land (GENII 2)
irrigation time for root vegetables (GENII 2)
Kd (EPA PRGs)
layer hen forage (DandD)
layer hen intake rate of grain (DandD)
layer hen intake rate of hay (DandD)
layer hen intake rate of soil (DandD)
layer hen intake rate of water (DandD)
leach rate constant (GENII 2)
leach rate constant (RESRAD)
leafy vegetable consumption (RESRAD)
leafy vegetable transfer factor (DandD)
livestock fodder intake for meat (RESRAD)
livestock fodder intake for milk (RESRAD)
livestock intake of soil (RESRAD)
livestock water intake for meat (RESRAD)
livestock water intake for milk (RESRAD)
mass loading factor for resuspension (GENII 2)
mass loading for foliar deposition (RESRAD)
mass loading for inhalation (RESRAD)
mean annual windspeed (EPA PRGs)
meat and poultry consumption (RESRAD)
milk consumption (RESRAD)
milk cow intake rate of forage (DandD)
milk cow intake rate of grain (DandD)
milk cow intake rate of hay (DandD)
milk cow intake rate of soil (DandD)
milk cow intake rate of water (DandD)
milk transfer factor (DandD)
other seafood consumption (RESRAD)
outdoor breathing (DandD)
outdoor dust concentration (DandD)
outdoor exposure time fraction (EPA PRGs)
outdoor shielding (DandD)
outdoor shielding factor (GENII 2)
outdoor time fraction (RESRAD)
partition coefficient (DandD)
plant to egg transfer factor (EPA PRGs)
plant to meat transfer factor (EPA PRGs)
plant to milk transfer factor (EPA PRGs)
plant to poultry transfer factor (EPA PRGs)
plant to swine transfer factor (EPA PRGs)
porosity of surface soil (DandD)
porosity of unsaturated zone (DandD)
poultry intake rate of forage (DandD)
poultry intake rate of grain (DandD)
poultry intake rate of hay (DandD)
poultry intake rate of soil (DandD)
poultry intake rate of water (DandD)
poultry transfer factor (DandD)
precipitation (RESRAD)
radon progeny indoor equilibrium fraction for age group # 1 (GENII 2)
radon vertical dimension of mixing (RESRAD)
resuspended soil inhalation period (GENII 2)
resuspended soil inhalation rate (GENII 2)
resuspension factor (DandD)
resuspension factor (GENII 2)
resuspension factor from soil to plant surfaces (GENII 2)
riparian animal bioaccumulation factor (RESRAD BIOTA)
Rn-220 emanation coefficient (RESRAD)
Rn-222 emanation coefficient (RESRAD)
root vegetable transfer factor (DandD)
runoff coefficient (RESRAD)
saturated zone b parameter (RESRAD)
saturated zone effective porosity (RESRAD)
saturated zone field capacity (RESRAD)
saturated zone hydraulic conductivity (RESRAD)
saturated zone hydraulic gradient (RESRAD)
saturated zone total porosity (RESRAD)
saturation ratio for the surface soil layer (DandD)
saturation ratio for the unsaturated soil layer (DandD)
shielding factor (GENII 2)
shoreline days (GENII 2)
shoreline sediment density (GENII 2)
shoreline width factor (GENII 2)
showering days (GENII 2)
soil adsorbtion coefficient (GENII 2)
soil bulk density (EPA PRGs)
soil contact days (GENII 2)
soil ingestion (DandD)
soil ingestion (RESRAD)
soil intake for beef cattle (EPA PRGs)
soil intake for dairy cattle (EPA PRGs)
soil intake rate (EPA PRGs)
soil intake rate for poultry (EPA PRGs)
soil intake rate for swine (EPA PRGs)
soil to plant concentration ratio for animal forage (GENII 2)
soil to plant concentration ratio for cereal (GENII 2)
soil to plant concentration ratio for fruit (GENII 2)
soil to plant concentration ratio for grain (GENII 2)
soil to plant concentration ratio for hay (GENII 2)
soil to plant concentration ratio for leafy vegetables (GENII 2)
soil to plant concentration ratio for other vegetables (GENII 2)
soil to plant concentration ratio for root vegetables (GENII 2)
soil to plant transfer factor (EPA PRGs)
soil-to-plant concentration factors (DandD)
standing animal feed biomass [wet] for beef animal feed (GENII 2)
standing animal feed biomass [wet] for beef animal forage (GENII 2)
standing animal feed biomass [wet] for egg animal feed (GENII 2)
standing animal feed biomass [wet] for milk animal feed (GENII 2)
standing animal feed biomass [wet] for milk animal forage (GENII 2)
standing animal feed biomass [wet] for poultry animal feed (GENII 2)
standing biomass [wet] for fruits (GENII 2)
standing biomass [wet] for grains (GENII 2)
standing biomass [wet] for leafy vegetables (GENII 2)
standing biomass [wet] for root vegetables (GENII 2)
storage time for beef (DandD)
storage time for beef animal feed (GENII 2)
storage time for beef animal forage (GENII 2)
storage time for crustacea and mollusks (RESRAD)
storage time for egg animal feed (GENII 2)
storage time for eggs (DandD)
storage time for fish (RESRAD)
storage time for fruits (DandD)
storage time for fruits, non-leafy vegetables, and grain (RESRAD)
storage time for grains (DandD)
storage time for leafy (DandD)
storage time for leafy vegetables (RESRAD)
storage time for meat (RESRAD)
storage time for milk (DandD)
storage time for milk (RESRAD)
storage time for milk animal feed (GENII 2)
storage time for milk animal forage (GENII 2)
storage time for poultry (DandD)
storage time for poultry animal feed (GENII 2)
storage time for roots (DandD)
storage time for surface water (RESRAD)
storage time for well water (RESRAD)
surface soil areal density (GENII 2)
surface soil bulk density (GENII 2)
surface soil density (DandD)
surface soil density (GENII 2)
surface soil moisture content (GENII 2)
swimming days (GENII 2)
terrestrial animal bioaccumulation factor (RESRAD BIOTA)
terrestrial plant bioaccumulation factor (RESRAD BIOTA)
thickness of evasion layer of C-14 in soil (RESRAD)
thickness of unsaturated zone (DandD)
thickness of unsaturated zone (RESRAD)
time from harvest to animal ingestion for fruits (GENII 2)
time from harvest to animal ingestion for grains (GENII 2)
time from harvest to animal ingestion for leafy vegetables (GENII 2)
time from harvest to animal ingestion for root vegetables (GENII 2)
time from harvest to ingestion for aquatic plants (GENII 2)
time from harvest to ingestion for crustacea (GENII 2)
time from harvest to ingestion for fish (GENII 2)
time from harvest to ingestion for fruits (GENII 2)
time from harvest to ingestion for grains (GENII 2)
time from harvest to ingestion for leafy vegetables (GENII 2)
time from harvest to ingestion for mollusca (GENII 2)
time from harvest to ingestion for root vegetables (GENII 2)
time gardening (DandD)
time in building (DandD)
time indoors (DandD)
time on job (DandD)
time outdoors (DandD)
total infiltration rate (GENII 2)
total porosity of unsaturated zone (RESRAD)
total soil porosity (EPA PRGs)
transfer factors for meat (RESRAD)
transfer factors for milk (RESRAD)
transfer factors for plants (RESRAD)
transfer rate (DandD)
translocation factor for animal feed for beef animal feed (GENII 2)
translocation factor for animal feed for beef animal forage (GENII 2)
translocation factor for animal feed for egg animal feed (GENII 2)
translocation factor for animal feed for milk animal feed (GENII 2)
translocation factor for animal feed for milk animal forage (GENII 2)
translocation factor for animal feed for poultry animal feed (GENII 2)
translocation factor for beef forage (DandD)
translocation factor for beef grain (DandD)
translocation factor for beef hay (DandD)
translocation factor for fodder (RESRAD)
translocation factor for fruits (DandD)
translocation factor for fruits (GENII 2)
translocation factor for grains (DandD)
translocation factor for grains (GENII 2)
translocation factor for layer hen forage (DandD)
translocation factor for layer hen grain (DandD)
translocation factor for layer hen hay (DandD)
translocation factor for leafy (DandD)
translocation factor for leafy (RESRAD)
translocation factor for leafy vegetables (GENII 2)
translocation factor for milk cow forage (DandD)
translocation factor for milk cow grain (DandD)
translocation factor for milk cow hay (DandD)
translocation factor for non-leafy (RESRAD)
translocation factor for poultry forage (DandD)
translocation factor for poultry grain (DandD)
translocation factor for poultry hay (DandD)
translocation factor for root vegetables (GENII 2)
translocation factor for roots (DandD)
unsaturated zone soil density (DandD)
water ingestion (DandD)
water intake for beef cattle (EPA PRGs)
water intake for dairy cattle (EPA PRGs)
water intake rate for swine (EPA PRGs)
water table drop rate (RESRAD)
water to fish transfer factor (EPA PRGs)
water-filled soil porosity (EPA PRGs)
weathering rate constant from plants (GENII 2)
weathering rate for activity removal from plants (DandD)
weathering removal constant for vegetation (RESRAD)
well pump intake depth (RESRAD)
well pumping rate (RESRAD)
wet deposition retention fraction to plant surfaces (GENII 2)
wet foliar interception fraction for fodder (RESRAD)
wet foliar interception fraction for leafy (RESRAD)
wet foliar interception fraction for non-leafy (RESRAD)
wet weight crop yield for fodder (RESRAD)
wet weight crop yield for leafy (RESRAD)
wet weight crop yield for non-leafy (RESRAD)
wet-to-dry conversion for beef forage (DandD)
wet-to-dry conversion for beef grain (DandD)
wet-to-dry conversion for beef hay (DandD)
wet-to-dry conversion for fruits (DandD)
wet-to-dry conversion for grains (DandD)
wet-to-dry conversion for layer hen forage (DandD)
wet-to-dry conversion for layer hen grain (DandD)
wet-to-dry conversion for layer hen hay (DandD)
wet-to-dry conversion for leafy (DandD)
wet-to-dry conversion for milk cow forage (DandD)
wet-to-dry conversion for milk cow grain (DandD)
wet-to-dry conversion for milk cow hay (DandD)
wet-to-dry conversion for poultry forage (DandD)
wet-to-dry conversion for poultry grain (DandD)
wet-to-dry conversion for poultry hay (DandD)
wet-to-dry conversion for roots (DandD)
yearly external ground exposure time (GENII 2)
yearly plume immersion exposure time (GENII 2)
yield for animal feed for beef animal feed (GENII 2)
yield for animal feed for beef animal forage (GENII 2)
yield for animal feed for egg animal feed (GENII 2)
yield for animal feed for milk animal feed (GENII 2)
yield for animal feed for milk animal forage (GENII 2)
yield for animal feed for poultry animal feed (GENII 2)
yield for fruits (GENII 2)
yield for grains (GENII 2)
yield for leafy vegetables (GENII 2)
yield for root vegetables (GENII 2)