MCU14/0056 - Attachment H -Economic Needs Assessment

                                                                                                                    ENG
                                                        Engineering Report & Stormwater Management Plan
                                                Date:          16/06/2014     Document No.:     14012-ENG-01.Docx

                                                 By:                AvT        Revision No.:              B


    Music Model Treatment Parameters
The bioretention system is designed to treat the stormwater runoff by filtering the runoff
through densely planted vegetation and percolating the runoff through the filter media. The
proposed design is in accordance with the Water Sensitive Urban Design Technical Design
Guidelines (by Water by Design) and a typical system is shown in the figure below.




      Figure 5.3:            Water By Design Bioretention System

The bioretention treatment node parameters used in the MUSIC model are shown in the table
below.
                                     Bioretention Bioretention Bioretention Bioretention
        PARAMETER                        Basin       Basin         Basin        Basin
                                        Service     Storage       Tourist      Future
 Low Flow By-Pass (m3/s)                 0.00                 0.00              0.00              0.00
 Low Flow By-Pass (m3/s)                100.00               100.00           100.00            100.00
 Extended Detention (m)                  0.30                 0.20              0.20              0.20
 Surface Area (m2)                       180.0                35.0              65.0              45.0
 Filter Media Area (m2)                  180.0                35.0              65.0              45.0
 Unlined Filter Media
                                         1.00                 1.00              1.00              1.00
 Perimeter (m)
 Sat. Hydraulic
                                        180.00               180.00           180.00            180.00
 Conductivity (mm/hr)
 Filter Depth (m)                        0.60                 0.60              0.60              0.60
 TN Content of Filter
                                         800                  800               800               800
 Media (mg/kg)
 Orthophosphate Content
                                         55.0                 55.0              55.0              55.0
 of Filter Media (mg/kg)
 Exfiltration Rate (mm/hr)               0.00                 0.00              0.00              0.00


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