RFI - Attachment C - Civil Engineering Report

WATER SENSITIVE DESIGN CODE
Performance Criteria and Acceptable Solution
Hofmann Drive Medical Centre
1 August 2018
Issue A

              PERFORMANCE OUTCOMES                                               ACCEPTABLE OUTCOMES                                                     RESPONSE

Use of natural treatments and systems
PO7                                                                AO7.1                                                         RO7
Natural treatment strategies, including grass swales and           No probable solution                                          Not applicable - Proprietary filters are proposed to be
bio-retention systems, vegetated filtration strips and gross                                                                     constructed as part of the development instead of vegetated
pollutant traps, are used wherever possible.                                                                                     assets due to site constraints. Refer to the Stormwater
                                                                                                                                 Management Plan prepared by MPN Consulting for further
                                                                                                                                 information.

PO8                                                                AO8                                                           RO8
Development design including density and scale provides            Integration of stormwater quality treatment is in             Not applicable - Proprietary filters are proposed to be
adequate footprint to integrate all elements of stormwater         accordance Healthy Waterways Water Sensitive Urban            constructed as part of the development instead of vegetated
quality and quantity treatment infrastructure including,           Design Guidelines for South East Queensland and the           assets due to site constraints. Appropriate maintenance
where relevant, bio retention basin batters and maintenance        Water by Design Bio retention Technical Design                access will be provided to the proposed stormwater quality
access, without the need for retaining walls.                      Guideline.                                                    treatment devices. Refer to the Stormwater Management
                                                                                                                                 Plan prepared by MPN Consulting for further information.

PO9                                                                AO9.1                                                         RO9.1
Stormwater conveyance channels use natural channel                 Landscape and ecological features (e.g. plant species and     Not applicable – No open stormwater conveyance channels
design principles to convey external catchment stormwater          habitat types) used in stormwater conveyance channels         are proposed to be constructed as part of the development.
through the development site and support landscape,                are complementary to the local context, including natural
passive recreation and ecological values.                          waterways;

                                                                   AND
                                                                   AO9.2                                                         RO9.2
                                                                   Planting densities result in a stable channel over the long   Not applicable – No open stormwater conveyance channels
                                                                   term and minimize potential for invasive weed growth.         are proposed to be constructed as part of the development.




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