Response to Stormwater Management Approval Conditions Letter

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    Further to this a contingency plan (including costs) to monitor for and to remove cyanobacterial and algal outbreaks
    has been provided in Appendix A of the SMCMP Report No. 16-001014-02A. Monitoring of the stormwater quality
    treatment devices will be implemented throughout the lifetime of the development.

66. Wetlands, bioretention basins and other water quality treatment devices shall be designed and constructed
    in accordance with Healthy Waterways Water Sensitive Urban Design – Technical Guidelines for South East
    Queensland 2006, Water by Design Bioretention Technical Design Guidelines 2014, Healthy Waterways
    Water by Design Construction and Establishment Guidelines: Swales, Bioretention Systems and Wetlands
    February 2009. In the case of any inconsistencies between these documents, the most recent document
    shall prevail.

Response

    Design of stormwater quality treatment devices is in accordance with the above mentioned documents. Further
    details are provided in Section 2.1 and 3.1 of SMCMP Report No. 16-001014-02A.

67. Stormwater treatment strategy must be designed and maintained to achieve compliance with the
    approved version of B14158.W.07L.AMcP.ag.docx dated 8 October for the Stormwater Management
    Construction and Maintenance Plan Framework.

Response

    The stormwater treatment strategy has been designed and maintained in accordance with Calibre Consulting’s
    Letter No. B14158.W.07L.AMcP.ag.docx dated 8 October 2015. Refer to SMCMP Report No. 16-001014-02A for
    details.

68. The detailed Stormwater Management Construction and Maintenance Plan (SMCMP) must be designed and
    implemented in accordance with the framework detailed in the approved version of
    B14158.W.07L.AMcP.ag.docx dated 8 October 2015 and approved by the Council prior to issue of
    operational works approval.

Response

    The SMCMP Report No. 16-001014-02A is in accordance with the framework provided in Calibre Consulting’s Letter
    No. B14158.W.07L.AMcP.ag.docx dated 8 October 2015. Refer to the report for details.

69. The owner of the development is responsible for all costs associated with the construction and ongoing
    maintenance and repair of the treatment of stormwater on the site and for all catchments that enter the site.

Response

    As detailed in the SMCMP Report No. 16-001014-02A, the owner of the development will be responsible for the
    construction, maintenance and repair of all stormwater quality treatment devices on site.

70. The Operational Works Application must include calculations in accordance with the Queensland Urban
    Drainage Manual to demonstrate that the confluence of stormwater at the drainage easement will not cause
    scour and that any required dissipater/erosion control can be contained wholly within the applicant’s
    property.

Response

    Calculations have been provided in Appendix A of the SMCMP Report No. 16-001014-02A to demonstrate that the
    confluence of stormwater at the drainage easement will not cause scour and that adequate energy dissipation
    wholly within the site will be provided.

71. Any waters captured on site must be plumbed to be available for all external uses including gardening,
    irrigation, filling swimming pools and outdoor cleaning, as well as all ground floor toilet cisterns and
    washing machine cold taps.

Response

    The capture of all water for external uses was not proposed as part of the previously approved MCU submission.
    The capture of all water on site is not required for the site to meet both Stormwater Quality and Quantity Objectives
    to be achieved and is therefore not proposed or required.