Request to Amend Application and Response to DSDIP's Information Request · MCU14/0009

Table 2: MUSIC Base and Storm Flow Concentration Parameters – Industrial

                                  Total Suspended            Total
                                                                              Total Nitrogen
                                       Solids             Phosphorous
                                                                               (Log10 mg/L)
 Land Use       Parameter           (Log10 mg/L)          (Log10 mg/L)
                                   Storm        Base     Storm        Base    Storm    Base
                                    Flow        Flow      Flow        Flow     Flow    Flow
                   Mean             1.92        0.78     -0.59        -1.11   0.25     0.14
 Industrial
               Std Deviation        0.44        0.45     0.36         0.48    0.32     0.20



Table 3: MUSIC Runoff Generation Parameters - Industrial

                                Parameter                        Industrial
                         Rainfall Threshold (mm)                     1
                           Soil Capacity (mm)                       18
                            Initial Storage (%)                     10
                               Field Capacity                       80
                   Infiltration Capacity Coefficient a              243
                   Infiltration Capacity Coefficient b              0.6
                           Initial Depth (mm)                       50
                           Daily Recharge (%)                        0
                           Daily Drainage (%)                       31
                     Daily Deep Seepage Rate (%)                     0

2.3.2 Catchment Areas
The development site has been represented as one catchment to reflect the
development proposal. The catchment reporting to the treatment device is limited
to the site itself. The catchment area is 0.164 ha

2.3.3 MUSIC Model Layout
As the management of urban stormwater needs to take a holistic approach, a
number of management measures need to be implemented where possible. The
correct utilisation of treatment devices is imperative to target the desired pollutants,
from the gross solids to the fine colloidal partials. Figure 3 shows the MUSIC model
layout for the development.




Figure 3: Model Layout




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