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

Preliminary estimates have been prepared [Table 3 - Table 6].

Table 3: Preliminary cost estimate for training wall [rock brouqht in by truck option
                                                                    Qty               Rate                      Amount
                                                                                                                ex-GS
Establishment                                                                                                   $100,000
Clearing, temporary access track & revegetation                                                                 $200,000
Approval fees associated with clearing
Excavation                                                           3.600 m2               $12                 $45,000
Supply & placement of geotextile 600R                                2.000m2                $10                 $20,000
Supply of rock                                                       3,100 m3               $60                 $185,000
Delivery and placement of rock                                       3,100 m3               $120                $375,000
Project management                                                                           5%                 $45,000
TOTAL                                                                                                          $970,000+



Table 4: Preliminary cost estimate for trainin    wall [rock brou ht in b bar e o tion
                                                                    Qty                Rate                      Amount
                                                                                                                 ex-GS
Establishment                                                                                                   $100,000
Excavation                                                           3,600 m2               $12                  $45,000
Supply & placement of geotextile 600R                                2,000 m2                $10                 $20,000
Supply of rock                                                       2,700 m3                S60                $160,000
Delivery and placement of rock are                                   2,700 m3               $160                $435.000
Project management                                                                           5%                  $40,000
TOTAL                                                                                                           $800,000

Table 5: Preliminary cost estimate for traininq wall [sand-filled qeotextile container option
                                                                    Qty                 Rate                    Amount
                                                                                                                ]ex-GST]
Establishment                                                                                                   $100,000
Additional excavation                                                 400 m3                 $12                 $5,000
Supply mega-containers [vandal resistant geotextile]                     17               $11,620               $198,000
Excavate, place and fill mega-containers                                 17                $6,000               $102,000
Project management                                                                           5%                 $20,000
TOTAL                                                                                                           $407,000

Table 6: Preliminary cost estimate for traininq wall [sand-filled qeotextile container with rock armour option
                                                                    Qty                 Rate              Amount
                                                                                                                 ex-GS
Establishment                                                                                                   $150,000
Additional excavation                                                400 m2                  $12                  $5,000
Supply mega-containers [vandal resistant geotextile]                    17                $11,620               $198,000
Excavate, place and fill mega-containers                                17                 $6,000               $102,000
Supply of rock                                                       1400 m3                 $60                 $85,000
Delivery and placement of rock are                                   1400 m3                $160                $225,000
Project management                                                                           5%                  S40,000
TOTAL                                                                                                           $805,000



While it was originally preferred to construct using sand-filled mega-containers in the first instance and subsequently armour
with rock due to concerns regarding the potential for damage. During stakeholder consultation, it became evident that there
were concerns regarding the use of rock, the difficulty of removal and the visual impact. At this stage, the preferred option is
the sand-filled geotextile container training wall, although if maintenance becomes an ongoing issue, further consideration
may be given to rock armouring.