Burwood Flood Management Conditions

• The invert level IL of the connecting stormwater pit shall be documented on the plan. Should the existing pit render unsuitable for pipe connection, new pit and lintel shall be built; and • The invert level of the tank outlet shall be above hydraulic grade line of downstream drainage system. The revised drawing shall be approved by an Accredited Certifier - Civil Engineering, prior to the issuing of a Construction Certificate. • A flood risk management and flood emergency evacuation report together with a flood evacuation plan shall be prepared by a suitably qualified hydraulic/ civil engineer and submitted to the Accredited Certifier. Such documentation shall be submitted to the…

• Adequate open grates and access shall be provided to the storage tank for cleaning and ventilation purposes. Step ladder shall be provided to the tank wall; • The storage shall be relatively self-cleansing; the base has to have minimum 2% fall to the outlet; • The invert level IL of the connecting stormwater pit shall be documented on the plan. Should the existing pit render unsuitable for pipe connection, new pit and lintel shall be built; and • The invert level of the tank outlet shall be above hydraulic grade line of downstream drainage system. The revised drawing shall be approved by an Accredited Certifier - Civil Engineering, prior to the issuing of the relevant Construction…

32. The applicant shall submit an updated Flood Impact Assessment that demonstrates compliance with Council’s Stormwater Management Code, particularly clause 3.4 which states that development activities must not cause any adverse impact on adjoining or any other properties. In this regard, it is noted that Figure 14 of the Flood Impact Assessment prepared by TTW dated 14 June 2022 does not illustrate the full extent of afflux (flood impact) on land to the west of the subject site. The updated report must be submitted to and approved by Council prior to the issuing of a Construction Certificate.

29. In accordance with Council’s draft flood study report, the land at 52-60 Railway Parade is flooding tagged properties, affected by overland flow and any new building habitable floor level (FFL) as well as the crest of the ramp to basement car park must be determined considering flood plain level, which is 1% AEP plus freeboard. The flood plain level (FPL) shall be obtained from the Council by lodging an application for ‘Flood Inquiry Report’. This shall be carried out Prior to Release of a Construction Certificate

25. The basement levels of the proposed building shall be further protected considering PMF level inundation with the help of flood gate or similar devices or other mitigation measures. Detailed design of flood protection barriers/gates/mitigation measures shall be approved by the Accredited Certifier prior to release of a Construction Certificate. Additional sump with designed pump out system shall be provided to cater for emergency intrusion of flood water in the basement. 

27. The proposed development shall not impede the natural flow path of floodwater with the use of solid wall or similar obstructing devices and shall allow overland flow to pass through. In this regard a Flood Impact Assessment Report shall be prepared by suitably qualified practicing engineer to establish the increase in 1%AEP flood level caused by the proposed development and submitted to the Accredited Certifier for approval prior to release of a Construction Certificate.

31. The proposed development shall not impede the natural flow path of floodwater with the use of solid wall or similar obstructing devices and shall allow overland flow to pass through. In this regard A Flood Impact Assessment Report shall be prepared by suitably qualified practicing engineer to establish the increase in 1%AEP flood level caused by the proposed development and submitted to Council for approval prior to release of a Construction Certificate.

30. The basement levels of the proposed building shall be further protected considering PMF level inundation with the help of flood gate or similar devices. Detailed design of Flood protection barriers/gates shall be provided to Council prior to release of Construction Certificate. Additional sump with designed pump out system shall be provided to cater for emergency intrusion of flood water in the basement.

28. The applicant shall submit an updated Flood Impact Assessment that demonstrates compliance with Council’s Stormwater Management Code, particularly clause 3.4 which states that development activities must not cause any adverse impact on adjoining or any other properties. The updated report must be submitted to and approved by the Accredited Certifier prior to the issuing of a Construction Certificate.

24. A flood risk management and flood emergency evacuation report together with a flood evacuation plan shall be prepared by a suitably qualified hydraulic/ civil engineer and submitted to the Accredited Certifier. Such documentation shall be submitted to the Accredited Certifier for approval prior to release of a Construction Certificate.

28. A flood risk management and flood emergency evacuation report together with a flood evacuation plan shall be prepared by a suitably qualified hydraulic/ civil engineer and submitted to Council. Such documentation shall be submitted to Council for approval prior to release of a Construction Certificate.

104. The builder must ensure that the proposed building materials are suitable to resist flood water inundation. All electrical services and mechanical sensitive equipment etc. that can be damaged by flood water, shall be adequately flood proofed and/or placed above the flood planning level.

125. The builder must ensure that the proposed building materials are suitable to resist flood water inundation. All electrical services and mechanical sensitive equipment etc. that can be damaged by flood water, shall be adequately flood proofed and/or placed above the flood planning level.