Development Application - Part 2 of 2 - Report & Plans · OPW11/0116

TOTAL                                                                 $2,932,000



    6.7.    Staged Works

Staging of the works is desirable to minimize the impacts, allow for monitoring and stage the costs. As such, Stage 1 works
are proposed to include [Figure 49]:

           First 80m of the downstream submerged closure [linking with the existing sand bank] to prevent breaching
           Training wall to prevent breaching
           Revetment wall to prevent further erosion at the end of the Noosa River Spit
           Dredging to provide alternate navigation [use of material as nourishment of foreshore]

As the river evolves, it may be necessary to extend the submerged closure and construct the short groynes to complete the
proposed works. Monitoring may also result in modifications to improve performance or reduce impacts.



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Figure 49: Proposed Stage 1 Works

Preliminary estimates have been prepared for the first 80m section of the submerged closure [Table 12].

Table 12: Preliminary cost estimate for Staqe 1A (80m submerged downstream "closure")
                                                               Qty              Rate                                                    Amount
                                                                                                                                        ex-GS
Establishment                                                                                                                         $100,000
Excavation [dredging] and nourishment! backfill                      3,000 m3                            $12                           $50,000
Supply mega-containers vandal resistant eotextile                       12                             $11,620                        $140,000
Place and fill mega-containers                                             12                          $6,000                           $72,000
Water quality testing                                                                         Allowance only                          $10,000
Project management                                                                                 5%                                 $15.000
TOTAL                                                                                                                                 $387,000