19660 OPW26-0033 - response to info request

Issue 5 – Access to Proposed Lots 1 – 5

Although not a condition of the Higher Order Approval (RAL19/0014), Council’s preference is
that these future lots are provided with a driveway crossover as part of these works. This will
avoid the need for a separate Operational Works application to remove a street tree for each
future lot’s driveway crossover.

Information Required

5. Provide amended plans that details a driveway crossover to proposed Lots 1 – 5.

Response

As per our discussions and emails with Daniel Epps we believe that it is preferable to leave the
location of future driveways to these lots to the future owners so that they can be aligned to suit
their house design. Council has accepted this preference – no amendment to drawings.

Issue 6 – Bioretention Basin

The proposed bioretention basin includes rock armouring of the inlet in lieu of a sediment
forebay. A maintenance access driveway to the maintenance ramp has not been provided.

Information Required

6. Provide amended plans that includes a bioretention basin with a sediment forebay and
the provision for a maintenance driveway.
6.1. The forebay must be accessible for maintenance purposes and be designed in
accordance with Water by Design’s guidelines.
6.2. The maintenance driveway must be concreted and include a lockable bollard to
prevent non-authorised vehicles from entering the maintenance driveway.

Response

A maintenance vehicle access with lockable bollard has been added to the drawings, however
as the catchment area reporting to the bio basin is less than 2ha a sediment forebay is not
required. Refer extract from Water by Design - Bioretention Technical Design Guidelines 2014
below. The area reporting to the bio basin is 1.256Ha, as noted in table 2.4 (section 2.3.2) of
the Stormwater management plan prepared by Aquaintel and approved under the higher order
approval. As such we have retained the rock scour protection at the outlet as shown on the
original plans. Refer revised drawings for details of the access.




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                                                                         Tod Job Number: 19660-OPW2-A