Attachment 7B - Site Based Stormwater Manamgment Plan by ADG

                                                                RACV Noosa Resort: 94-142 Noosa Drive, Noosa Heads

                                                                         ADG Ref: 22366 C R10 Rev04 14.12.22.docx

                                                                                                   December 2022


 4       STORMWATER INFRASTRUCTURE
 4.1     Existing Infrastructure
         A Noosa Shire Council DBYD search and detailed survey identified the following stormwater
         infrastructure within the vicinity of the subject site:

            Existing 1050mm stormwater pipe and associated gully pit traversing the southern portion of 94
            Noosa Drive (Lot 203 on SP267424) and the existing Sanctuary Drive Road via kerb and channel
            adapters to the north-east of the proposed extension;

            Existing Council stormwater infrastructure consisting of 375-525mm stormwater pipes and gully
            pits external to 142 Noosa Drive (Lot 3 on SP126203) within the south-eastern roundabout.

         Refer to Appendix A for the detailed survey for further information regarding the existing stormwater
         infrastructure.

         Note: A diversion swale exists within existing RACV Noosa Resort along the development sites
         northern boundary internal to the resort development property. ADG refer reader to previous site
         reporting documents for details.

 4.2     Lawful Point of Discharge (LPD)
 4.2.1   Existing LPD

          Based on information gathered via survey and contour data, aerial imagery and site investigation it
          has been determined that the development site discharges stormwater flows via overland flow
          towards Weyba Creek.

 4.2.2   Proposed LPD

          It is proposed to maintain the existing ultimate lawful point of discharge being Weyba Creek to the
          west. Any increased runoff because of the proposed development is anticipated to be infiltrated
          onsite.

          Refer to Appendix C for the Preliminary Layout Plans prepared by this office.

 4.3      External Catchment
          No significant upstream catchment directly acts on the developable site area, other than the carpark
          extents beyond the boundary line. The area within Sanctuary Drive discharges to the existing council
          infrastructure within the road via kerb and channel adapters, this it to remain unchanged.

          Refer to Appendix A for the detailed survey for further information regarding the existing site
          features.




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