response to information request - pomona subdivision 19.11.2021

   4. Provide an accurate plan of the 1%AEP inundation extent at year 2100 for the
      development site and demonstrate that all proposed filling is located outside
      of this inundation extent.

Peak Urban have directly addressed this matter in their updated Stormwater Management
Plan dated 28 October 2021.

   The corner of Lot 10 is shown to be partially inundation in the 1% (2100) AEP (noting
   it is flood free in smaller events including the 1% AEP). A flood impact assessment
   was completed using NSC “Pomona Flood Model” in order to demonstrate no off-site
   impacts, no loss of floodplain storage and compliance with the Flood Overlay Code.
   The proposed 3m wide open drain along the southern boundary to Lot 10 is able to
   manage the flood flows through this part of the site. Refer to Section 2.2 for this
   assessment.

   5. Either amend the proposal plans and preliminary earthworks plans to
      demonstrate no filling within the 1%AEP (2100) inundation extent, or provide
      a flood impact assessment which demonstrates no loss of floodplain storage
      and no off-site flood impacts associated with the filling.

Peak Urban have directly addressed this matter in their updated Stormwater Management
Plan dated 28 October 2021.

   The corner of Lot 10 is shown to be partially inundation in the 1% (2100) AEP (noting
   it is flood free in smaller events including the 1% AEP). A flood impact assessment
   was completed using NSC “Pomona Flood Model” in order to demonstrate no off-site
   impacts, no loss of floodplain storage and compliance with the Flood Overlay Code.
   The proposed 3m wide open drain along the southern boundary to Lot 10 is able to
   manage the flood flows through this part of the site. An additional shallow cut area is
   to be provided in Lot 10 to off-set the loss of flood plain storage. Refer to Section 2.2
   for this assessment.

   6. Either amend the plans to ensure all works are fully contained within the
      subject lot, or If works within Lot 4 RP809059 are required to support the
      application, then amend the application to include this lot and include
      landowners consent.

All works are to be fully contained within the subject site as per the Service Layout Plan
by TODS dated 11/11/2021.




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