EcoService Models Library (ESML)
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Variables Details
: (EM-892)
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EM-892 | |
Document Author
variable.detail.emDocumentAuthorHelp
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McKane |
Document Year
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Decay rate (maximum) ?Comment:Constant value determined by the class variable; Contaminant. The maximum daily decay rate constant (fraction per day) of a specified contaminant. The Comptox library (https://comptox.epa.gov/#/) lists the half-life for most organic contaminants, from which the daily maximum decay rate constant can be calculated and specified for this parameter. Users can enter the specified half-life value into an online calculator to calculate the decay constant. For example, see https://www.calculator.net/half-life-calculator.html?type=2&chalflife=4&cmeanlifetime=&cdecayconstant=&x=35&y=16. Note that decomposed contaminant amounts are not tracked by the simulation and not reported in its results. This is because contaminants almost always make up an insignificant fraction of the total amount of organic matter within soils. |
Microbial efficiency of decomposition ?Comment:Constant value determined by the class variable; Contaminant. The unitless microbial efficiency (range [0.0, 1.0]) of decomposition of organic contaminants in soil, that is, the ratio of carbon assimilated/total carbon consumed, whereby the difference is that respired as carbon dioxide. Typical microbial efficiencies range from 0.45 to 0.55. |
Molar mass ?Comment:Constant determined by the class variable: Contaminant. Comptox provides the molecular weight for all contaminants in its library. Users need to enter this so that VELMA can calculate solubility. |
Octanol-water partition coefficient ?Comment:Kow (log10) is the experimentally determined ratio of a contaminant's concentration in the octanol (C8H17OH) phase of a two-phase octanol-water system. Kow is a standard indicator of a contaminant’s affinity for adsorption by organic matter. Higher KOW values indicate strongly sorbed, less mobile (hydrophobic) chemicals. User enters KOW value into VELMA based on EPA Comptox website, https://comptox.epa.gov/dashboard. Note that Comptox expresses KOW as KP, a confusing use of terminology. This variable is a constant determined by the class variable; Contaminant. |
Slope intercept of linear regression correlating log(octanol-water partition coefficient) to carbon normalized sorption coefficient ?Comment:This variable is a constant determined by the class variable; Contaminant. This requires user input of published empirical regression parameters describing the relationship between KOW and KOC. Contaminant-specific regression parameters for calculating KOC can often be applied to chemically similar contaminants, with the caveat that soil organic matter concentrations and mineralogy are within the range of experimental conditions for which the regression was developed (Piwoni and Banerjee 1989; Ho et al. 2005). |
Slope of linear regression correlating log(octanol-water partition coefficient) to carbon normalized sorption coefficient ?Comment:This variable is a constant determined by the class variable; Contaminant. This requires user input of published empirical regression parameters describing the relationship between KOW and KOC. Contaminant-specific regression parameters for calculating KOC can often be applied to chemically similar contaminants, with the caveat that soil organic matter concentrations and mineralogy are within the range of experimental conditions for which the regression was developed (Piwoni and Banerjee 1989; Ho et al. 2005). |
Solubility in water ?Comment:Constant determined by the class variable; Contaminant. Contaminant solubility values can be found in EPA’s Comptox library (https://comptox.epa.gov/#/). |
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Variable ID
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22101 | 22102 | 22096 | 22020 | 22021 | 22022 | 22095 |
Not reported | Not reported | Not reported | Koc | Not reported | Not reported | Not reported | |
Qualitative-Quantitative
variable.detail.continuousCategoricalHelp
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Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) |
Cardinal-Ordinal
variable.detail.cardinalOrdinalHelp
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Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal |
% day^-1 | % | g mol^-1 |
unitless ?Comment:unitless ratio, Log10 |
unitless | unitless | mol L^-1 |
Decay rate (maximum) ?Comment:Constant value determined by the class variable; Contaminant. The maximum daily decay rate constant (fraction per day) of a specified contaminant. The Comptox library (https://comptox.epa.gov/#/) lists the half-life for most organic contaminants, from which the daily maximum decay rate constant can be calculated and specified for this parameter. Users can enter the specified half-life value into an online calculator to calculate the decay constant. For example, see https://www.calculator.net/half-life-calculator.html?type=2&chalflife=4&cmeanlifetime=&cdecayconstant=&x=35&y=16. Note that decomposed contaminant amounts are not tracked by the simulation and not reported in its results. This is because contaminants almost always make up an insignificant fraction of the total amount of organic matter within soils. |
Microbial efficiency of decomposition ?Comment:Constant value determined by the class variable; Contaminant. The unitless microbial efficiency (range [0.0, 1.0]) of decomposition of organic contaminants in soil, that is, the ratio of carbon assimilated/total carbon consumed, whereby the difference is that respired as carbon dioxide. Typical microbial efficiencies range from 0.45 to 0.55. |
Molar mass ?Comment:Constant determined by the class variable: Contaminant. Comptox provides the molecular weight for all contaminants in its library. Users need to enter this so that VELMA can calculate solubility. |
Octanol-water partition coefficient ?Comment:Kow (log10) is the experimentally determined ratio of a contaminant's concentration in the octanol (C8H17OH) phase of a two-phase octanol-water system. Kow is a standard indicator of a contaminant’s affinity for adsorption by organic matter. Higher KOW values indicate strongly sorbed, less mobile (hydrophobic) chemicals. User enters KOW value into VELMA based on EPA Comptox website, https://comptox.epa.gov/dashboard. Note that Comptox expresses KOW as KP, a confusing use of terminology. This variable is a constant determined by the class variable; Contaminant. |
Slope intercept of linear regression correlating log(octanol-water partition coefficient) to carbon normalized sorption coefficient ?Comment:This variable is a constant determined by the class variable; Contaminant. This requires user input of published empirical regression parameters describing the relationship between KOW and KOC. Contaminant-specific regression parameters for calculating KOC can often be applied to chemically similar contaminants, with the caveat that soil organic matter concentrations and mineralogy are within the range of experimental conditions for which the regression was developed (Piwoni and Banerjee 1989; Ho et al. 2005). |
Slope of linear regression correlating log(octanol-water partition coefficient) to carbon normalized sorption coefficient ?Comment:This variable is a constant determined by the class variable; Contaminant. This requires user input of published empirical regression parameters describing the relationship between KOW and KOC. Contaminant-specific regression parameters for calculating KOC can often be applied to chemically similar contaminants, with the caveat that soil organic matter concentrations and mineralogy are within the range of experimental conditions for which the regression was developed (Piwoni and Banerjee 1989; Ho et al. 2005). |
Solubility in water ?Comment:Constant determined by the class variable; Contaminant. Contaminant solubility values can be found in EPA’s Comptox library (https://comptox.epa.gov/#/). |
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Predictor-Intermediate-Response
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Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
Predictor Variable Type
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Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter | Constant or Parameter |
Response Variable Type
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Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
Data Source/Type
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Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
Variable Classification Hierarchy
variable.detail.vchLevel1Help
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4. Human-Produced Stressor or Enhancer of Ecosystem Goods and Services Production |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
4. Human-Produced Stressor or Enhancer of Ecosystem Goods and Services Production |
4. Human-Produced Stressor or Enhancer of Ecosystem Goods and Services Production |
4. Human-Produced Stressor or Enhancer of Ecosystem Goods and Services Production |
4. Human-Produced Stressor or Enhancer of Ecosystem Goods and Services Production |
4. Human-Produced Stressor or Enhancer of Ecosystem Goods and Services Production |
--Human-caused release, presence or characteristics of polluting substances |
--Biological characteristics, processes or requirements of living ecosystem components |
--Human-caused release, presence or characteristics of polluting substances |
--Human-caused release, presence or characteristics of polluting substances |
--Human-caused release, presence or characteristics of polluting substances |
--Human-caused release, presence or characteristics of polluting substances |
--Human-caused release, presence or characteristics of polluting substances |
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----Other, multiple, unspecified or unclear |
----Biological characteristics, processes or requirements of ecological communities |
----Other, multiple, unspecified or unclear |
----Other, multiple, unspecified or unclear |
----Other, multiple, unspecified or unclear |
----Other, multiple, unspecified or unclear |
----Other, multiple, unspecified or unclear |
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------Soil communities |
Decay rate (maximum) ?Comment:Constant value determined by the class variable; Contaminant. The maximum daily decay rate constant (fraction per day) of a specified contaminant. The Comptox library (https://comptox.epa.gov/#/) lists the half-life for most organic contaminants, from which the daily maximum decay rate constant can be calculated and specified for this parameter. Users can enter the specified half-life value into an online calculator to calculate the decay constant. For example, see https://www.calculator.net/half-life-calculator.html?type=2&chalflife=4&cmeanlifetime=&cdecayconstant=&x=35&y=16. Note that decomposed contaminant amounts are not tracked by the simulation and not reported in its results. This is because contaminants almost always make up an insignificant fraction of the total amount of organic matter within soils. |
Microbial efficiency of decomposition ?Comment:Constant value determined by the class variable; Contaminant. The unitless microbial efficiency (range [0.0, 1.0]) of decomposition of organic contaminants in soil, that is, the ratio of carbon assimilated/total carbon consumed, whereby the difference is that respired as carbon dioxide. Typical microbial efficiencies range from 0.45 to 0.55. |
Molar mass ?Comment:Constant determined by the class variable: Contaminant. Comptox provides the molecular weight for all contaminants in its library. Users need to enter this so that VELMA can calculate solubility. |
Octanol-water partition coefficient ?Comment:Kow (log10) is the experimentally determined ratio of a contaminant's concentration in the octanol (C8H17OH) phase of a two-phase octanol-water system. Kow is a standard indicator of a contaminant’s affinity for adsorption by organic matter. Higher KOW values indicate strongly sorbed, less mobile (hydrophobic) chemicals. User enters KOW value into VELMA based on EPA Comptox website, https://comptox.epa.gov/dashboard. Note that Comptox expresses KOW as KP, a confusing use of terminology. This variable is a constant determined by the class variable; Contaminant. |
Slope intercept of linear regression correlating log(octanol-water partition coefficient) to carbon normalized sorption coefficient ?Comment:This variable is a constant determined by the class variable; Contaminant. This requires user input of published empirical regression parameters describing the relationship between KOW and KOC. Contaminant-specific regression parameters for calculating KOC can often be applied to chemically similar contaminants, with the caveat that soil organic matter concentrations and mineralogy are within the range of experimental conditions for which the regression was developed (Piwoni and Banerjee 1989; Ho et al. 2005). |
Slope of linear regression correlating log(octanol-water partition coefficient) to carbon normalized sorption coefficient ?Comment:This variable is a constant determined by the class variable; Contaminant. This requires user input of published empirical regression parameters describing the relationship between KOW and KOC. Contaminant-specific regression parameters for calculating KOC can often be applied to chemically similar contaminants, with the caveat that soil organic matter concentrations and mineralogy are within the range of experimental conditions for which the regression was developed (Piwoni and Banerjee 1989; Ho et al. 2005). |
Solubility in water ?Comment:Constant determined by the class variable; Contaminant. Contaminant solubility values can be found in EPA’s Comptox library (https://comptox.epa.gov/#/). |
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Spatial Extent Area
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Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables |
Spatially Distributed?
variable.detail.spDistributedHelp
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Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables |
Observations Spatially Patterned?
variable.detail.regularSpGrainHelp
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Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables |
Spatial Grain Type
variable.detail.spGrainTypeHelp
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Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables | Not recorded for Constant or Paarameter Variables |
Spatial Grain Size
variable.detail.spGrainSizeHelp
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Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables |
Spatial Density
variable.detail.spDensityHelp
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Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables |
EnviroAtlas URL
variable.detail.enviroAtlasURLHelp
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Decay rate (maximum) ?Comment:Constant value determined by the class variable; Contaminant. The maximum daily decay rate constant (fraction per day) of a specified contaminant. The Comptox library (https://comptox.epa.gov/#/) lists the half-life for most organic contaminants, from which the daily maximum decay rate constant can be calculated and specified for this parameter. Users can enter the specified half-life value into an online calculator to calculate the decay constant. For example, see https://www.calculator.net/half-life-calculator.html?type=2&chalflife=4&cmeanlifetime=&cdecayconstant=&x=35&y=16. Note that decomposed contaminant amounts are not tracked by the simulation and not reported in its results. This is because contaminants almost always make up an insignificant fraction of the total amount of organic matter within soils. |
Microbial efficiency of decomposition ?Comment:Constant value determined by the class variable; Contaminant. The unitless microbial efficiency (range [0.0, 1.0]) of decomposition of organic contaminants in soil, that is, the ratio of carbon assimilated/total carbon consumed, whereby the difference is that respired as carbon dioxide. Typical microbial efficiencies range from 0.45 to 0.55. |
Molar mass ?Comment:Constant determined by the class variable: Contaminant. Comptox provides the molecular weight for all contaminants in its library. Users need to enter this so that VELMA can calculate solubility. |
Octanol-water partition coefficient ?Comment:Kow (log10) is the experimentally determined ratio of a contaminant's concentration in the octanol (C8H17OH) phase of a two-phase octanol-water system. Kow is a standard indicator of a contaminant’s affinity for adsorption by organic matter. Higher KOW values indicate strongly sorbed, less mobile (hydrophobic) chemicals. User enters KOW value into VELMA based on EPA Comptox website, https://comptox.epa.gov/dashboard. Note that Comptox expresses KOW as KP, a confusing use of terminology. This variable is a constant determined by the class variable; Contaminant. |
Slope intercept of linear regression correlating log(octanol-water partition coefficient) to carbon normalized sorption coefficient ?Comment:This variable is a constant determined by the class variable; Contaminant. This requires user input of published empirical regression parameters describing the relationship between KOW and KOC. Contaminant-specific regression parameters for calculating KOC can often be applied to chemically similar contaminants, with the caveat that soil organic matter concentrations and mineralogy are within the range of experimental conditions for which the regression was developed (Piwoni and Banerjee 1989; Ho et al. 2005). |
Slope of linear regression correlating log(octanol-water partition coefficient) to carbon normalized sorption coefficient ?Comment:This variable is a constant determined by the class variable; Contaminant. This requires user input of published empirical regression parameters describing the relationship between KOW and KOC. Contaminant-specific regression parameters for calculating KOC can often be applied to chemically similar contaminants, with the caveat that soil organic matter concentrations and mineralogy are within the range of experimental conditions for which the regression was developed (Piwoni and Banerjee 1989; Ho et al. 2005). |
Solubility in water ?Comment:Constant determined by the class variable; Contaminant. Contaminant solubility values can be found in EPA’s Comptox library (https://comptox.epa.gov/#/). |
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Temporal Extent
variable.detail.tempExtentHelp
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Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables |
Temporally Distributed?
variable.detail.tempDistributedHelp
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Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables |
Regular Temporal Grain?
variable.detail.regularTempGrainHelp
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Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables |
Temporal Grain Size Value
variable.detail.tempGrainSizeValHelp
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Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables |
Temporal Grain Size Units
variable.detail.tempGrainSizeUnitHelp
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Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables |
Temporal Density
variable.detail.tempDensityHelp
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Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables |
Decay rate (maximum) ?Comment:Constant value determined by the class variable; Contaminant. The maximum daily decay rate constant (fraction per day) of a specified contaminant. The Comptox library (https://comptox.epa.gov/#/) lists the half-life for most organic contaminants, from which the daily maximum decay rate constant can be calculated and specified for this parameter. Users can enter the specified half-life value into an online calculator to calculate the decay constant. For example, see https://www.calculator.net/half-life-calculator.html?type=2&chalflife=4&cmeanlifetime=&cdecayconstant=&x=35&y=16. Note that decomposed contaminant amounts are not tracked by the simulation and not reported in its results. This is because contaminants almost always make up an insignificant fraction of the total amount of organic matter within soils. |
Microbial efficiency of decomposition ?Comment:Constant value determined by the class variable; Contaminant. The unitless microbial efficiency (range [0.0, 1.0]) of decomposition of organic contaminants in soil, that is, the ratio of carbon assimilated/total carbon consumed, whereby the difference is that respired as carbon dioxide. Typical microbial efficiencies range from 0.45 to 0.55. |
Molar mass ?Comment:Constant determined by the class variable: Contaminant. Comptox provides the molecular weight for all contaminants in its library. Users need to enter this so that VELMA can calculate solubility. |
Octanol-water partition coefficient ?Comment:Kow (log10) is the experimentally determined ratio of a contaminant's concentration in the octanol (C8H17OH) phase of a two-phase octanol-water system. Kow is a standard indicator of a contaminant’s affinity for adsorption by organic matter. Higher KOW values indicate strongly sorbed, less mobile (hydrophobic) chemicals. User enters KOW value into VELMA based on EPA Comptox website, https://comptox.epa.gov/dashboard. Note that Comptox expresses KOW as KP, a confusing use of terminology. This variable is a constant determined by the class variable; Contaminant. |
Slope intercept of linear regression correlating log(octanol-water partition coefficient) to carbon normalized sorption coefficient ?Comment:This variable is a constant determined by the class variable; Contaminant. This requires user input of published empirical regression parameters describing the relationship between KOW and KOC. Contaminant-specific regression parameters for calculating KOC can often be applied to chemically similar contaminants, with the caveat that soil organic matter concentrations and mineralogy are within the range of experimental conditions for which the regression was developed (Piwoni and Banerjee 1989; Ho et al. 2005). |
Slope of linear regression correlating log(octanol-water partition coefficient) to carbon normalized sorption coefficient ?Comment:This variable is a constant determined by the class variable; Contaminant. This requires user input of published empirical regression parameters describing the relationship between KOW and KOC. Contaminant-specific regression parameters for calculating KOC can often be applied to chemically similar contaminants, with the caveat that soil organic matter concentrations and mineralogy are within the range of experimental conditions for which the regression was developed (Piwoni and Banerjee 1989; Ho et al. 2005). |
Solubility in water ?Comment:Constant determined by the class variable; Contaminant. Contaminant solubility values can be found in EPA’s Comptox library (https://comptox.epa.gov/#/). |
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Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | |
Min Value
variable.detail.minEstHelp
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Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
Max Value
variable.detail.estHelp
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Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
Other Value Type
variable.detail.natureOtherEstHelp
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Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
Other Value
variable.detail.otherEstHelp
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Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
Decay rate (maximum) ?Comment:Constant value determined by the class variable; Contaminant. The maximum daily decay rate constant (fraction per day) of a specified contaminant. The Comptox library (https://comptox.epa.gov/#/) lists the half-life for most organic contaminants, from which the daily maximum decay rate constant can be calculated and specified for this parameter. Users can enter the specified half-life value into an online calculator to calculate the decay constant. For example, see https://www.calculator.net/half-life-calculator.html?type=2&chalflife=4&cmeanlifetime=&cdecayconstant=&x=35&y=16. Note that decomposed contaminant amounts are not tracked by the simulation and not reported in its results. This is because contaminants almost always make up an insignificant fraction of the total amount of organic matter within soils. |
Microbial efficiency of decomposition ?Comment:Constant value determined by the class variable; Contaminant. The unitless microbial efficiency (range [0.0, 1.0]) of decomposition of organic contaminants in soil, that is, the ratio of carbon assimilated/total carbon consumed, whereby the difference is that respired as carbon dioxide. Typical microbial efficiencies range from 0.45 to 0.55. |
Molar mass ?Comment:Constant determined by the class variable: Contaminant. Comptox provides the molecular weight for all contaminants in its library. Users need to enter this so that VELMA can calculate solubility. |
Octanol-water partition coefficient ?Comment:Kow (log10) is the experimentally determined ratio of a contaminant's concentration in the octanol (C8H17OH) phase of a two-phase octanol-water system. Kow is a standard indicator of a contaminant’s affinity for adsorption by organic matter. Higher KOW values indicate strongly sorbed, less mobile (hydrophobic) chemicals. User enters KOW value into VELMA based on EPA Comptox website, https://comptox.epa.gov/dashboard. Note that Comptox expresses KOW as KP, a confusing use of terminology. This variable is a constant determined by the class variable; Contaminant. |
Slope intercept of linear regression correlating log(octanol-water partition coefficient) to carbon normalized sorption coefficient ?Comment:This variable is a constant determined by the class variable; Contaminant. This requires user input of published empirical regression parameters describing the relationship between KOW and KOC. Contaminant-specific regression parameters for calculating KOC can often be applied to chemically similar contaminants, with the caveat that soil organic matter concentrations and mineralogy are within the range of experimental conditions for which the regression was developed (Piwoni and Banerjee 1989; Ho et al. 2005). |
Slope of linear regression correlating log(octanol-water partition coefficient) to carbon normalized sorption coefficient ?Comment:This variable is a constant determined by the class variable; Contaminant. This requires user input of published empirical regression parameters describing the relationship between KOW and KOC. Contaminant-specific regression parameters for calculating KOC can often be applied to chemically similar contaminants, with the caveat that soil organic matter concentrations and mineralogy are within the range of experimental conditions for which the regression was developed (Piwoni and Banerjee 1989; Ho et al. 2005). |
Solubility in water ?Comment:Constant determined by the class variable; Contaminant. Contaminant solubility values can be found in EPA’s Comptox library (https://comptox.epa.gov/#/). |
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Variability Expression Given?
variable.detail.variabilityExpHelp
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Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables |
Variability Metric
variable.detail.variabilityMetricHelp
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None | None | None | None | None | None | None |
Variability Value
variable.detail.variabilityValueHelp
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None | None | None | None | None | None | None |
Variability Units
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None | None | None | None | None | None | None |
Resampling Used?
variable.detail.bootstrappingHelp
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Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables |
Variability Expression Used in Modeling?
variable.detail.variabilityUsedHelp
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Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables | Not recorded for Constant or Parameter Variables |
Variable ID
variable.detail.varIdHelp
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Validated?
variable.detail.resValidatedHelp
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Validation Approach (within, between, etc.)
variable.detail.validationApproachHelp
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Validation Quality (Qual/Quant)
variable.detail.validationQualityHelp
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Validation Method (Stat/Deviance)
variable.detail.validationMethodHelp
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Validation Metric
variable.detail.validationMetricHelp
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Validation Value
variable.detail.validationValHelp
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Validation Units
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Use of Measured Response Data
variable.detail.measuredResponseDataHelp
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