12332_Council_Information Response_081118

Good Shepard Lutheran College                                                                                     Odyssey Consulting Group
Proposed Car Park                                                                                    Council Information Request Response
Lot 30 on SP170751                                                                                                       Project No: K4277
115 EUMUNDI NOOSA ROAD, NOOSAVILLE

During early stages of the concept design, an underground detention alternative was considered, however, it was
determined that an underground detention tank would be cost prohibitive to the project and therefore an open-air
basin would be more suitable for the site. The location of the bio retention / detention basin was chosen to minimise
changes in ground levels over the site. As the natural ground generally grades south west, this was the optimal location
to provide the basin to collect the majority of the site and treat stormwater runoff in a single location. An existing gully
pit is also nearby to the proposed location, this allowed the depth of the basin to be maximised to thereby reducing the
overall footprint of the basin.

The proposed bio retention / detention basin will be accessed via a maintenance ladder fastened to the wall of the
basin. Further details shall be provided at detailed design stage.

If you would like to discuss or require anything further, please do not hesitate to contact me.

Yours faithfully




ANDREW PILKINGTON | PROJECT ENGINEER
[email protected]


ATTACHMENTS
Attachment A       Odyssey Consulting Group, Conceptual Stormwater Management Plan (Ref: K4277-0002-C).
Attachment B       Odyssey Consulting Group, MUSIC Model (Ref: K4277- 20181018).




K4277-0005-A                                               2 November 2018                                                     Page 3 of 3