Amended Site-Based Stormwate Management Plan · RAL18/0023

4.0 STORMWATER QUALITY MANAGEMENT

This Site Based Stormwater Management Plan includes Stormwater Quality Management
guidelines for the construction phase of the development. The development will implement
stormwater quality management for construction and operational phases as per Qld SPP
(2017), Council’s PSP, and the Water Sensitive Urban Design (WSUD) Technical Manual
by Healthy Waterways. The efficiency of the Stormwater Quality Improvement Devices
(SQID’s) during operational phase have been assessed with a MUSIC model as outlined in
Section 4.3 of this report. Refer to the Stormwater Management Layout in Appendix A
showing the catchment boundaries and treatment nodes proposed for the development.


The proposed allotments remain vacant as part of the subdivision development. Given the
proposed use of the allotments, development of each lot would trigger a Material Change
of Use application. Each future development shall provide its own SQID's to satisfy
stormwater runoff pollutant removal targets for the specific lot. The SQID's modelled with
this report are to address stormwater runoff from the road reserves only.


This version of the Stormwater Quality Management Plan has been updated to include the
fraction impervious area contributed by the driveways within the verge of proposed Road B
and Hofmann Drive. A catchment plan for the treatment nodes is also included with
Appendix A.




Site Based Stormwater Management Plan                                          Page 4 of 20
1856-SBSMP-01_Version 3.0 (May 2019)