Delegated Report - Code - Planning OPW24 0125 · OPW24/0125

               The proposed development includes a fraction impervious of 0.551, reduced from 0.554 that
               currently exists onsite. The MUSIC modelling provided by applicant demonstrated that the existing
               stormwater management systems fails to achieve Council’s minimum total nitrogen reduction rate
               of 45% (40.6%). Through assessment of the higher order approval, the applicant provided
               additional modelling that included additional infiltration trenches. This resulted in a total nitrogen
               reduction rate of 50.2%, exceeding the minimum requirement. The additional infiltration trenches
               are documented in the latest revision of submitted drawings.
               The applicant informed Council that Condition 36 of the existing 2005 approval was not currently
               being complied with. The condition relates to stormwater quality treatment of an existing area of
               the development that is not included as part of the proposed works. To satisfy the condition and
               achieve a more holistic outcome, the applicant has proposed to retrofit a proprietary stormwater
               treatment device as part of the proposed works. Performance Outcome 7 of the Water Quality and
               Drainage Code states that:
                      “Water quality systems use natural processes, whenever possible…”
               In this instance, Engineering believes that retrofitting a treatment device that uses natural
               processes is not reasonably possible. The extent of works required to retrofit a treatment device
               that uses natural processes will adversely affect the development site (i.e., loss of vegetation,
               carparking, stormwater infrastructure, etc.). The proposed proprietary device would be privately
               owned and maintained. Engineering believes the use of a proprietary device is considered
               acceptable in this instance.
               Earthworks
               The works proposes a balance of 810m3 of earthworks (803m3 of cut, 1,613m3 of fill). The extent
               of cut and fill will not occur below +5m AHD and therefore does not trigger assessment against the
               State Planning Policy for Acid Sulfate Soils.
               Carparking
               The additional proposed carparks have been designed in accordance with AS2890.
               Summary
               The submitted development plans prepared by STP Consultants are annotated as “NOT FOR
               CONSTRUCTION”. An amended set of plans that are “FOR CONSTRUCTION” are to be submitted
               to Council prior to Council attending the pre-start meeting.
               Engineering believes that the proposed development generally complies with the relevant
               provisions of The Noosa Plan 2020, the higher order approval and Infrastructure Agreement and
               recommends the following conditions.
               5.     CONSULTATION
               5.1. Referral Agencies
               Not Applicable
               5.2. Internal Council Referrals
               The application was forwarded to the following internal Council officers for review and/or comment:
               •      Senior Environment Officer
               •      Infrastructure Services (Design Office)
               6.     CONCLUSION & REASONS FOR DECISION
               The proposed development generally complies with the requirements of the planning scheme and
               does not raise any significant issues that cannot be addressed by reasonable and relevant
               conditions. The application is therefore recommended for approval.
               The report is provided in accordance with Section 63(5) of the Planning Act 2016.
               RECOMMENDATION


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Document Set ID: 23410526
Version: 6, Version Date: 14/01/2025