Table 5.1.3.2—Standard Unit Costs GTPs – Type Description Direct Indirect Project Costs Total Construction (13% of Total Unit Cost Unit Cost Cost (17% of Direct and Direct Indirect Construction Unit Construction Cost) Unit Costs) Design to treat GTP $74,958 $12,743 $11,401 $99,102 2.65 m3/s flow GTP Design to treat $798,174 $135,690 $121,402 $1,055,266 3.02 m3/s flow GTP Design to treat $74,829 $12,721 $11,381 $98,931 0.15 m3/s flow GTP Design to treat $141,343 $24,028 $21,498 $186,870 0.43 m3/s flow Design to treat GTP $266,058 $45,230 $40,467 $351,755 1.55 m3/s flow Bio-retention basin The unit costs include the following: site preparation clearing, removal of weeds and decontamination if necessary; – earthworks; and supply and planting of selected vegetation. Table 5.1.3.3—Standard Unit Costs Bio-retention Basins – Type Description Direct Indirect Project Costs (13% Total Construction of Total Direct and Unit Unit Cost Cost (17% of Indirect Construction Cost Direct Unit Costs) Construction Unit Cost) Bio-retention Design area 7ha $56,546 $9,613 $8,601 $74,759 Basin Bio-retention Design area $74,398 $12,648 $11,316 $98,362 Basin 10.3ha 5.1.1 Backflow Prevention Devices (BDPs) There are no planned BDP projects included in the SoW, subsequently no costing methodology or values are included.
Table 5.1.3.2—Standard Unit Costs – GTPs Type Description Direct Unit Cost Indirect Construction Cost (17% of Direct Construction Unit Cost) Project Costs (13% of Total Direct and Indirect Construction Unit Costs) Total Unit Cost GTP Design to treat 2.65 m3/s flow $74,958 $12,743 $11,401 $99,102 GTP Design to treat 3.02 m3/s flow $798,174 $135,690 $121,402 $1,055,266 GTP Design to treat 0.15 m3/s flow $74,829 $12,721 $11,381 $98,931 GTP Design to treat 0.43 m3/s flow $141,343 $24,028 $21,498 $186,870 GTP Design to treat 1.55 m3/s flow $266,058 $45,230 $40,467 $351,755 Bio-retention basin The unit costs include the following: site preparation – clearing, removal of weeds and decontamination if necessary; earthworks; and supply and planting of selected vegetation. Table 5.1.3.3—Standard Unit Costs – Bio-retention Basins Type Description Direct Unit Cost Indirect Construction Cost (17% of Direct Construction Unit Cost) Project Costs (13% of Total Direct and Indirect Construction Unit Costs) Total Unit Cost Bio-retention Basin Design area 7ha $56,546 $9,613 $8,601 $74,759 Bio-retention Basin Design area 10.3ha $74,398 $12,648 $11,316 $98,362 5.1.1 Backflow Prevention Devices (BDPs) There are no planned BDP projects included in the SoW, subsequently no costing methodology or values are included.
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