Document ID: chunk:federal_register_of_legislation:F2013C00288:reg:14:p2
Version: federal_register_of_legislation:F2013C00288
Segment Type: reg
Provision Reference: reg 14 (pt 2/4)
Character Range: 1999769–2002772

sites.
Bioconcentration factor (BCF)  is a quantitative measure of a chemical's tendency to be taken up from the ambient environment (for example, water for aquatic organisms and soil or soil pore water for soil organisms). The BCF is the ratio of the concentration of the chemical in tissue (or a specific organ) and the concentration in the ambient environment.
Bioconcentration is the net result of the uptake, distribution and elimination of a substance due to exposure in the ambient environment (for example, water for aquatic organisms and soil or soil pore water for soil organisms).
Biological half life is the time needed to reduce the concentration of a test chemical in the environmental compartment or organisms to half the initial concentration, by transport processes, (for example, diffusive elimination), transformation processes (for example, biodegradation or metabolism) or growth.
Biomagnification factor (BMF) is a quantitative measure of a chemical's tendency to be taken up through the food web.
Biomagnification is the accumulation and transfer of chemicals via the food web due to ingestion, resulting in an increase of the internal concentration in organisms at the succeeding trophic levels.
Chronic is extended or long-term exposure to a stressor, conventionally taken to include at least a tenth of the life-span of a species.
Default conversion factors are numerical values that are used to convert a measure of toxicity to another measure of toxicity (for example, EC50 to a NOEC) when no experimentally determined values are available.
Ecological investigation level (EIL) is the concentration of a contaminant above which further appropriate investigation and evaluation of the impact on ecological values will be required. The EILs are calculated using EC30 or LOEC toxicity data. EILs are the sum of the added contaminant limit (ACL) and the ambient background concentration (ABC) and the level is expressed in terms of total concentration.
ECx  is effective concentration; the concentration which affects X% of a test population after a specified exposure time.
Environmental fate is the destiny of a chemical or biological pollutant after release into the natural environment.
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.
Kd (see watersoil partition coefficient).
Koc (see organic carbonwater partition coefficient).
Kow (see octanolwater partition coefficient).
Leaching is 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; the lowest concentration of a material used in a test that has a statistically significant effect on the exposed population of test