Attachment 5 - Stormwater Managment Plan · 132007.12.8

Executive Summary
AquaIntel Pty Ltd was commissioned by N.C. Oliver Properties Pty Ltd to prepare a Stormwater
Management Plan to support the Material Change of Use application for a carpark at Lot 4
Goodchap Street, Noosaville (Lot 3 SP264909).

The site currently has an unsealed carpark that services the adjoining Central Queensland
University medical hub. The site falls from the north-east to south-west boundary where runoff
flows into bushland park. The site is part of the Noosa River catchment and is not subject to
regional flooding.

Environmental best management practices are proposed for treatment of stormwater flowing
from the site. Stormwater will pass through a treatment device prior to discharge to the
receiving environment. The stormwater treatment strategy for the site will include collection
of runoff from roofed, road and allotment areas being directed to an on-site bioretention
system located at the outlets to the site.

Non-worsening of peak flows from the site has been demonstrated through the incorporation
of a detention system at the outlet to the site and will be located in conjunction with the
bioretention system. There is an external catchment associated with the Telstra site located
directly to the north. This site has existing drainage installed and will be maintained as part
of this development.