Document ID: chunk:federal_register_of_legislation:F2013C00288:reg:6:p3
Version: federal_register_of_legislation:F2013C00288
Segment Type: reg
Provision Reference: reg 6 (pt 3/5)
Character Range: 1472871–1475855

The equation for this is x/m = KfCel/n, where x/m is the concentration of the contaminant in soil (mg/kg), Ce is the contaminant concentration in the aqueous phase at equilibrium (mg/L), Kf is the equilibrium constant (the Freundlich adsorption constant) and l/n is the contaminant-specific exponent.
Generic soil quality guidelines describe a single concentration-based value that applies to all Australian soils that have a particular land use. These are derived when normalisation relationships are not available. Compare these with soil-specific soil quality guidelines.
Indicator means a biotic characteristic of the environment, for example, a plant end point that provides evidence of the occurrence or magnitude of exposure or effects.
Kd (see water to soil partition coefficient).
Koc (see organic carbonwater partition coefficient)
Kow (see octanolwater partition coefficient)
Leaching involves the dissolving of contaminants in soil and subsequent downward transport to groundwater or surface water bodies.
Leachate is water that has percolated through a column of soil.
LOEC is the lowest observed effect concentration (level); the lowest concentration of a material used in a test that has a statistically significant effect on the exposed population of test organisms compared to the control.
Logistic curve is a function fitting the general equation y = k/ (1+ea+bt) where t represents time, y the body weight or population size, a and b are model-specific parameters. This mathematical function with parameters can be adjusted so that the function closely describes a set of empirical data. Statistical models are curve-fitted to data where the mathematical function used is selected for its numerical properties.
NOEC means no observed effect concentration; the highest concentration of a test substance to which organisms are exposed that does not cause any observed and statistically significant adverse effects on the organisms compared to the controls.
Normalisation relationships are empirical, generally linear, relationships that can predict the toxicity of a contaminant to an organism using soil physicochemical properties. These are used in the EIL derivation methodology to generate soil-specific soil quality guidelines.
Octanolwater partitioning (Kow) means the ratio of a chemical's solubility in n-octanol and water at equilibrium. This is widely used as a surrogate for the ability of a contaminant to accumulate in organisms and to biomagnify. These are often expressed in the logarithmic form (that is, log Kow). Chemicals with a log Kow value ≥4 are considered in this guideline to have the potential to biomagnify. There is a linear relationship between log Kow and log Koc values. Thus, Kow can also be used to indicate the ability of chemical to leach to groundwater. A log Kow value <2 indicates a chemical has the potential to leach to groundwater.
Organic carbonwater partition coefficient (Koc) means the ratio of a chemical's solubility