Attachment B - Projex Partners RFI Response Letter

Ref: 205-002-2015-002L




10 March 2015

RPS Australia Asia Pacific
PO Box 149
Wurtulla QLD 4575

Attention: Brad Williams


Dear Sir

RESPONSE TO MCU APPLICATION – INFORMATION REQUEST
FOR APPLICATION MCU14/0083, 178 EUMUNDI NOOSA ROAD, NOOSAVILLE

In response to your Information Request Notice dated 11th November 2014, we provide the following
responses for approval.

ISSUE
The submitted management plan includes assumptions of the downstream drainage system and the
applicant has not demonstrated that the downstream drainage system has the capacity to cater for the
proposed development.

4. Information Required
Demonstrate that the downstream drainage system has the capacity to cater for the proposed
development in accordance with Council’s Planning Scheme Policy 5 and QUDM or provide amended
plans that indicate the necessary on site detention system.

Response:
Please find attached the drainage catchment plan and drainage calculation table (provided by Council on
26th February 2015) that demonstrates the existing system has the capacity to accommodate the post
development flows from the site as described below.

With reference to the attached catchment plan, the site’s discharge point to the underground drainage
system is at is at Pit 9, which then joins Pit 5. The calculations table shows the design flows in this
reach of the system to be 32l/s with a capacity within this reach of 161l/s.

The stormwater quantity analysis within the Stormwater Management Plan provided with the application,
estimates a pipe flow from the proposed development in the order of 69l/s. As such, flows from the
proposed development (69l/s) and the catchment (32l/s) are accommodated within the existing system
(161l/s).

ISSUE
The applicant has not submitted the MUSIC model files for assessment. Council also has concerns with
the potential future costs of maintaining the proposed system.