Attachment 6 - Stormwater Management Plan and Engineering Response. · MCU23/0078

                                       Figure 2: Noosa Shire Council Interactive Flood Map


3. EXISTING AND PROPOSED STORMWATER INFRASTRUCTURE

3.1   EXISTING INFRASTRUCTURE

      A Before You Dig investigation, detailed survey, and examination of as-constructed documentation for the surrounding
      roadways has been completed of the site and its surrounding area. The following stormwater infrastructure was noted:

          −   An existing 1200mm x 600mm box culvert and temporary field inlet is located at the south-west corner of the Lot
              3 which conveys flows below Hofmann Drive and into Eenie Creek to the south of the development site;

          −   An existing 375mm dia. stormwater pipe with multiple gully pits is located along the southern half of the internal
              access roadway which also conveys flows along Hofmann Drive and into Eenie Creek;

          −   An existing 750mm dia. stormwater pipe with multiple gully pits is located along the northern half of the internal
              access roadway which conveys flows to the north into the upstream end of the environmental zone and natural
              drainage channel bounding Lot 3;

          −   A 4-cell 1200mm x 600mm box culvert exists below Hofmann Drive which conveys flows from the environmental
              zone and natural drainage channel below Hofmann Drive into Eenie Cree to the south; and

          −   The stormwater infrastructure within the access roadways have been built for a fully developed catchment.

      As-constructed Drawings of the existing stormwater infrastructure and detailed survey can be found in Appendix C.




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