ABSTRACT
Performance bond and insurances item 25000
Site mobilization item 9000
Site running costs 32 weeks 10000
Ground Investigation 55000 2.75
Trial pits and boreholes item 5000
Laboratory analyses and sampling item 50000
Geotechnical and Specialist Services 305000 15.25
Bioremediation – mobilization item 10000
Bioremediation – treatment 8000 m3 20
Stabilization and solidification – mobilization item 5000
Stabilization and solidification – treatment 2000 m3 65
Demolition 10000 0.50
General site clearance 20000 m² 0.50
Earthworks 2309700 115.49
General excavations 5000 m3 1
Extra over for hand excavation 200 m3 50
Breaking out tarmacadam surfaces 300 m3 5
Breaking out mass concrete 1000 m3 7
Breaking out reinforced concrete 800 m3 12
On-site material management 51800 m3 4
Trimming and preparation of excavated surfaces 20000 m² 1
Screening of excavated material 50000 m3 1
Crushing and screening of hard material 1800 m3 7
Disposal of tarmacadam off site including haulage 300 m3 40
Disposal of non-hazardous material off site including haulage 6000 m3 50
Disposal of hazardous material off site including haulage 3000 m3 120
Land Remediation Quantity Unit Rate Total (£) Cost (£/m²)
Disposal of WAC-failing hazardous material off site including haulage 1000 m3 150
Landfill Tax on disposed material, based on 1.9 tonnes/m3 19570 tonne 40
Filling of material arising from site screening and crushing 31800 m3 1
Filling of material arising from on-site treatment 10000 m3 1
Imported granular material to make up levels to existing 10300 m3 25
Miscellaneous Works 10000 0.50
Repairs to boundary fencing, walls etc item 10000
Contractor Overheads and Profits 438300 21.92
Allowance contractor's overheads and profit 4%
Design reserve 10%
Construction cost (rate based on gross site area) 3482000 174.11
height. The costs are based on a generic solution with a gross internal floor area of 70,000m², which includes 5% office and ancillary accommodation (3,500m²). Costs of enhancements including the warehouse and office area fitout and ancillary buildings, together with costs of external works are detailed. Costs of racking and materials handling installations are excluded. The model has been prepared on the assumption that ground conditions are good and that minimal site preparation is required.
