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| Glossary ยป T |
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GlossaryThis glossary is copied from the Stormwater Manual of Western Australia Chapter 11: Further Information. References are available from this chapter. A B C D E F G H I J K L M N O P Q R S T U V W X Y Z TTarget: A numerical concentration limit or descriptive statement relating to an aspect of water management aspired to as part of a stormwater management project. Time of concentration: The time required for a drop of water to travel from the most hydrologically remote point to the point of discharge. Threat: An activity or land use with potential to damage the local or receiving environment’s social/cultural, ecological or economic values, via impacts to stormwater quantity or quality. Total phosphorus (TP): The total phosphorus that is contained within the matrix. Total suspended solids (TSS): A water quality measurement referring to the dry-weight of particles in a sample that is trapped by a filter of specified pore size. Town planning controls: One of the five principal categories of non-structural BMPs for stormwater management. An example includes the use of town planning instruments to promote water sensitive urban design features in new developments. Toxicity: The quantity or degree to which a substance is poisonous or harmful to plant, animal or human health. Treatment train: In most situations, a number of management measures may be implemented in series or concurrently forming a treatment train approach to stormwater management. To achieve the best stormwater management outcomes, both structural and non-structural techniques should be used in particular combinations to suit the local conditions. This arrangement will satisfy the water quantity and quality objectives that might be unachievable if relying on a single BMP. Additionally, the impact from the failure of one device will be reduced by the operation of the other devices in the treatment train. Triple-bottom-line assessment: A process which uses multi-criteria analysis to evaluate the economic, social and ecological costs and benefits of possible BMPs. |
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