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

             altered stormwater quality or flows, and

             wastewater (other than contaminated stormwater and sewage), and

             the creation or expansion of non-tidal artificial waterways, and

             Demonstrate compliance with the SPP code - Water quality (Appendix 3).

          Appendix 2 (Table B) of SPP 2017 suggests ‘Post Construction Phase – Stormwater Management
          Design Objectives’ as:

                                     Table 2 - South East Queensland (SEQ) Targets

            Total Suspended Solids       Total Phosphorus         Total Nitrogen           Gross Pollutants
                     (TSS)                      (TP)                   (TN)                    >5mm

                 80% Removal               60% Removal             45% Removal               90% Removal


          Along with the SPP 2017, The Noosa Plan 2020 Water Quality and Drainage Code acceptable
          outcome AO6.1 states that;

          Stormwater runoff discharging into High Ecological Value waters as a result of development causes
          no increase in gross pollutants, total suspended solids, total phosphorous or total nitrogen compared
          to a pre-development scenario.

          Since the development site slopes toward and discharges to Weyba Creek, no pollutants compared
          to pre-development can be discharged from the site.

          The objective is to provide the following:

             Nitrogen and Phosphorous removal

             Gross Pollutant and Suspended Solids Removal

             All of the site’s impervious areas discharge to suitable treatment device/s

             Treatment device selection criteria are to be in accordance with Industry Best Practice and,
             WSUD Engineering Guidelines

 6.2      Site Analysis and Design Strategy
 6.2.1    Pre-Development Phase

          An Erosion Hazard Assessment has been carried out for the proposed development – refer to
          Appendix F for a copy of the completed Noosa Shire Council form. As a result of this assessment,
          it was determined that the overall site is a ‘low’ risk.

          Prior to construction commencing, the following erosion and sediment control measures will need to
          be installed around the subject site to minimise disturbance and ensure the quality of runoff
          discharging from the site is of an acceptable standard:

             Sediment barriers to be installed on all entrances to downstream stormwater infrastructure (i.e.
             gully pits);

             Designation of transport routes through the site to minimise vegetation disturbance;



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