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Batchelor water supply development study 1985.



Batchelor water supply development study 1985.


Keith Lane & Associated Pty Ltd


E-Publications; E-Books; PublicationNT; Report ; 68/1985




Made available via the Publications (Legal Deposit) Act 2004 (NT).





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Dept. of Mines and Energy

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Report ; 68/1985

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Technical Report WRD85068 Viewed at 15:07:30 on 29/07/2010 Page 29 of 58. I I I I I I I I I I I I I I I I I I I I 10.3.4 Economics: An economic comparison is provided for the two options . . (i) Provide ground level storage at the existing site, with a new 300mm diameter delivery main and booster pump station (located on the delivery main near the present end of Nurndina Street) controlled by pressure sensors. New ground level reservoir : = $450000 - allowing construction $40000 for $30000 for $380000 pipework, s i teworks I for tank 1.2 km (approximately) of 300 mm diameter PVC delivery main : = $115000 Pump Station : = $65000 - allowing electrical work Total = $630000 $30000 $15000 $20000 for pump house for pumps for associated (ii) Provide ground level storage at the proposed new site to the Town's north-west, with a new 225mm diameter delivery mains from the new tank and a new 300mm delivery mains from the existing tank. Tank = $450000 1.2 km delivery 2.1 km delivery 3.0 km main : (approximately) of 300 mm diameter PVC main : = $115000 (approximately) of 225 mm diameter PVC main : = $135000 (approximately) of 225 mm diameter PVC rising = $195000 Total = $895000 The above analysis does not account for the fact that two chlorinators will be required for the second alternative, further increasing the cost difference. It will therefore be more economical to construct a new ground level 'storage at the existing site, with a supplementary booster pump station, than to develop the new higher elevation site which would ensure a gravity fed supply 25

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