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musicincorporates music incorporates the ability to display the predicted probabilisticwater probabilistic water quality conditions at source nodes (e.g. urban subcatchment), treatment nodes (e.g. wetland) or receiving nodes, against local orregional or regional water quality concentration standards. Exampleconcentration Example concentration standards for TSS, TP and TN are provided, howeverthese however these should only be taken as a guide and do not constitute adoptedstandards adopted standards for any particular location. You can add any relevantvalues relevant values that they wish and these are then reflected in the chartswhen charts when the model is run and the charts are displayed.

The mostappropriate most appropriate water quality concentration standards for the catchmentyou catchment you are investigating are likely to be those that have been derivedfor derived for that specific catchment, or at least the local region. Use ofthe of the example concentration standards is only to demonstrate how thestandards the standards may be displayed in the graphs and do not represent anyparticular any particular locality.

Selected water quality standards can be displayed on either theTime the Time Series Graph or Cumulative Frequency Graphs (more detail onthese on these is provided in Chapter 4).

Water quality concentration standards are usually specified inthe in the form of a threshold water quality concentration value, and arequired a required compliance frequency for that value. The use of thecumulative the cumulative frequency curves is the best means of assessing theperformance the performance of a stormwater quality treatment strategy against thewater the water quality standards. For example, the TSS standard for Brisbanespecifies Brisbane specifies a median daily value of 15mg/L. This means that TSSconcentration TSS concentration in Brisbane should not exceed 15mg/L more than 50% ofthe of the time.

Irrespective of the time-step used in model simulation, themodel the model compiles predicted water quality concentrations forcumulative for cumulative probability analysis in several forms:

1.Daily mean – - the flow-weightedmean weighted mean concentration for each day,
2.Daily maxima – - the maximumconcentration maximum concentration in any time-step for each day,
3.Daily sample – - the concentrationin concentration in a randomly selected time-step each day,
4.All data – - the concentration inall in all time-steps (any time-step in which there is no flow will berecorded be recorded as zero concentration).
5.Flow-based sub-sample – theconcentration - the concentration in all time-steps for which the flow falls within ausera user-specified range.

You can choose the time-step of analysis for the production ofstatisticsof statistics. For example, even if the model is run at a 6 minutetimeminute time-step, statistics can be produced at an hourly or dailytimedaily time-step, if required.