PART Response to Information Request · OPW11/0335

          approximately 2500 kg/year, whereas the annual load from stage 1 of the developed site
          is reduced to 77 kg/year (Appendix B). Likewise, annual loads for total nitrogen reduce
          from 34 kg/year to 18.1 kg/year and the annual load for total phosphorus reduces from
          5.9kg/year to 1.81 kg/year (Appendix B).

          Water Quality predictions from the MUSIC model (Appendix B) indicate that
          contributions of total suspended solids, nitrogen and phosphorus in treated stormwater
          from the Stage 1 developed site (Table 6-3) comply with the required water quality
          objectives (Table 3-1) and are not worse than the existing case (Table 6-2).


          Table 6-3: MUSIC Model Results - Staae 1 Site
                           Water Quality Indicator                                                    Result
            Estimated long-term load (kg/year)                                      % reduction               Load (kg/year)
            Suspended Solids                                                               77                         567
            Total Phosphorus                                                               69                        1.81
            Total Nitrogen                                                                 46                        18.1

           6.3.3      Full Development Modelling

          Results of MUSIC modelling showed that there will be no net increase in stormwater
          runoff from the site. Loads of sediment, total nitrogen and total phosphorus will be
          substantially removed from stormwater before entering the Noosa National Park
          (Appendix B).

          Modelling for the fully developed site predicted a 30 reduction in stormwater entering
          Noosa National Park, from 19 ML/year to 13.3 ML/year. The annual load of total
          suspended solids from the existing site (the caravan park) was predicted to be
          approximately 2500 kg/year, whereas the annual load from the fully developed site is
          451 kg/year (Appendix B). Likewise, the annual load for total nitrogen reduces from 34
          kg/year to 20 kg/year and the annual load for total phosphorus reduces from 5.9kg/year
          to 1.8 kg/year (Appendix B).

          Water Quality predictions from the MUSIC model (Appendix B) indicate that
          contributions of total suspended solids, nitrogen and phosphorus in treated stormwater
          from the developed site (Table 6-4) comply with the required water quality objectives
          (Table 3-1) and are not worse than the existing case (Table 6-2).

          Table 6-4: MUSIC Model Results - Fully Developed Site
                          Water Quality Indicator                                                    Result
           Estimated long-term load (kg/year)                                      % reduction                Load (kg/year)
           Suspended Solids                                                               88                         451
           Total Phosphorus                                                               79                         1.79
           Total Nitrogen                                                                 56                         20.3




02012 Simmonds & Bristow Pty Ltd                         Contrast Constructions                          J-1005-310 - 13 January 2012
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SCEMP_Scanlon Property Group_V3.0_ta_120113.doc                                                                          Page 11 of 24