Civil Engineering Report

 3 March 2022



5         STORMWATER
5.1       Lawful Point of Discharge

The lawful point of discharge for the proposed subdivision is the existing stormwater pit in the
south west corner of the site, the Ghostgun Court road reserve and the Butler Street road reserve.

5.2       Flooding

Noosa Shire Council overlay mapping indicates that the site is not subject to flooding from any
sources.

5.3       Site Based Stormwater Management Plan

The aim of the Stormwater Management Plan outlined below is to:

      •   Prevent or minimise adverse social or environmental impacts from stormwater runoff
          originating from the proposed development.
      •   Achieve acceptable levels of stormwater runoff quality and quantity.

The Stormwater Management Plan aims to identify Stormwater Quantity and Quality Best
Management Practice for the site and demonstrate that water quantity and quality impacts will be
minimised in receiving waters.

The Stormwater Management Plan outlines the site in two sections, the operational phase and the
construction phase. The operational phase addresses site runoff from the developed site before
discharging into receiving waters whilst the construction phase of the Stormwater Management
Plan addresses erosion and sediment control to prevent contamination of water sources by
stormwater runoff during construction of the site.

5.4       Operational Phase

 5.4.1 Proposed Site Drainage

Stormwater runoff from the proposed development will be collected and conveyed in a new internal
private pit and pipe network.

The existing stormwater pit located in the south west corner of the site will service lot 4.

Lots 1, 3 and 5 will be serviced from existing kerb adapters located in Ghostgum Court and Butler
Street.

A new kerb adapter will be provided to service lot 2 as per Noosa Shire Council requirements.

The proposed stormwater infrastructure is shown on MPN Plan 9279 -DA.01 attached in Appendix
3.




 Excellence with Economy in Engineering                                                              8
 l:\9000-9999\9200-9299\9279\report\03-03-22 civil engineering report_issue a.docx