Document ID: chunk:federal_register_of_legislation:F2013C00288:reg:8:p4
Version: federal_register_of_legislation:F2013C00288
Segment Type: reg
Provision Reference: reg 8 (pt 4/7)
Character Range: 3046278–3049168

type and nature of adverse effects where a contaminant has an inherent capacity to cause harm to an exposed population.
Hazard index (HI) is the sum(s) of at least two hazard quotients. It is noted that WHO is moving towards the use of risk indices (RI).
Hazard quotient (HQ) is the ratio of the mean daily intake to the reference dose or tolerable daily intake for threshold exposure. It is noted that WHO is moving towards the use of risk quotients (RQ).
Health investigation levels (HILs) mean the concentration of a contaminant above which further appropriate investigation and evaluation will be required to ensure the protection of human health.
Health risk assessment (HRA) is the process of estimating the potential impact of a chemical, biological or physical agent on a specified human population system under a specific set of conditions.
Health risk management is the process of evaluating and implementing appropriate options to address risks identified from health risk assessments. The decision-making will incorporate scientific, social, economic and political information.
Intake is the total amount of contaminant (or dose) taken into the body by the exposure route.
Multiple-lines-of-evidence approach is the process for evaluating and integrating information from different sources of data and uses best professional judgement to assess the consistency and plausibility of the conclusions that can be drawn.
Non-aqueous phase liquid (NAPL) is a chemical substance that is insoluble or only slightly soluble in water, which exists as a separate liquid phase in environmental media. The free liquid phase of a chemical substance, which is not dissolved in water or adsorbed to soil.
Non-genotoxic carcinogen is a chemical substance which induces tumours via a mechanism which does not involve direct damage to genetic material (DNA).
Pica is a behaviour exhibited occasionally by young children and rarely by adults, characterised by the deliberate ingestion of non-nutritive substances, such as soil. Habitual or repetitive pica specifically involving soil-eating behaviour (or 'geophagia') is uncommon.
Reference dose is an estimate of the daily exposure dose that is likely to be without deleterious effect even if continued exposure occurs over a lifetime. Equivalent in meaning to tolerable daily intake and acceptable daily intake.
Remediation is the cleaning up or management of contamination.
Response is change developed in the state of dynamics of an organism, system, or population in reaction to exposure to a chemical substance.
Risk means the probability in a certain timeframe that an adverse outcome will occur in a person, a group of people, plants, animals and/or the ecology of a specified area that is exposed to a particular dose or concentration of a chemical substance, that is, it depends on both the level of toxicity of the chemical substance and