It is expected that there will be no external catchment flows running into the site. Flows from north of the development site discharge into an existing channel that runs across the northern boundary site’s in an East-West direction. These flows will then be diverted along Clifton Ave and Bellarine Highway, prior to being discharged into the which is located to the south of the site. ‘Gateway Sanctuary’, The external catchment to the site flowing south past the Bellarine Highway has been included in our hydraulic model as discussed in more detail in Section 5 below. Stormwater Quantity Management Precinct – Assessment Table 2: Detention Requirements for the 1 in 100 year ARI Flow Storm Pre-developed Buffer Detention Volume Detention Volume Frequency (Site Only) (Site Required within Required (South of Only) Proposed Car Park Bellarine Highway) 1 in 10yr ARI 0.18 m3/s 0.13 m3/s 0 m3 ,00 m3 1 in 100yr 0.29 m3/s 0.28 m3/s 300 m3 m3 ARI The proposed stormwater detention location is shown in Figure 7 below (Refer to Annex 1 for a larger scale of the proposed site development - Drawings and ).
It is expected that there will be no external catchment flows running into the site. Flows from north of the development site discharge into an existing channel that runs across the site’s northern boundary in an East-West direction. These flows will then be diverted along Clifton Ave and Bellarine Highway, prior to being discharged into the ‘Gateway Sanctuary’, which is located to the south of the site. The external catchment to the site flowing south past the Bellarine Highway has been included in our hydraulic model as discussed in more detail in Section 5 below. Stormwater Quantity Management – Precinct Assessment Table 2: Detention Requirements for the 1 in 100 year ARI Flow Storm Frequency Pre-developed (Site Only) (Site Only) Buffer Detention Volume Required within Proposed Car Park Detention Volume Required (South of Bellarine Highway) 1 in 10yr ARI 0.18 m3/s 0.13 m3/s 0 m3 ,00 m3 1 in 100yr ARI 0.29 m3/s 0.28 m3/s 300 m3 m3 The proposed stormwater detention location is shown in Figure 7 below (Refer to Annex 1 for a larger scale of the proposed site development - Drawings and ).
8d0994be3b3a662-Stormwater%20Report%20(Cardno)%20Oct%202013%20WORD.docx