steve

From: <Al>
Date: Tue Jul 06 2004 - 11:38:00 EDT

(1) divining rod - $0.09. Works best near taeri river.
(2) hire the Maoris to do a raindance ($9999)
(3) tap into robins supply
(4) spring rains wont be long , you can shower then
(5) silverstream... haha
(6) bottled canadian water

seriously
- a heavy rainfall might temporarily improve things.

• try the backflush first but if youre sucking s drying well it will block again soon.
• Doesnt hurt to have a second reservoir.
• tank filled by rainwater off roof. Could also runoff roof into dugout.
• look into gettin with the neighbours and cost share hookup. Likely youre not the only one with the current drought. its not that far to Mosgeil or the river. problem is Mosgeil might not agree.
• the water table is reasonably high there and theres good rainfall. make a dugout (better if lined). thats what they do in the prairies and it works fine. about 12ft is the minimum but the deeper the better. I know this will work because the bomb shelters always filled and they were shallow. Pump it up to header tank in the roof. they used to be copper but plastic would be better now.
• combination of the above may take the pressure off the well until the drought eases and it can recuperate.
• put in a water tank and collect roof runoff. be a lot less than $10K and probably should do it as a backup anyway.

-----Original Message-----
From: Steve McKenzie [mailto:mechproj@xtra.co.nz] Sent: Tuesday, July 06, 2004 3:04 AM
To: <a href="/group/PipingDesign/post?postID=NzBrnyVlsvsGKz_Ec8pmXYLHXEgitHWTG-u89pPW7dXA2DEs_YCzOmfILJ1Bf4midP2RD8CsEa6gT0zU-HnWM6NpdQ">PipingDesign@yahoogroups.com</a> Subject: [PipingDesign] Bore rehabilitation methods

Gents + 1

my water bore at home has nearly given up the ghost. I dont know much about it except that it has a 40mm HPDE pipe concreted (at the top) into a 65NB steel liner. And its old. No idea of the depth
I cannot extract the HDPE pipe because of the concrete, and if I did, I may not be able to get it back in.
The bore is slightly artesian;overflows very slowly at zero load. However if I pump it, the pressure drops to around 7m lift which is all the pump can do. Pumped, I guess the current yield is around 5 lpm; used to be about 30 lpm.
I suspect the screen is blocked and am wondering about trying a backflush, with either compressed air or water, ot try and clear it. Any ideas/references?
Cost of a new bore is $10,000 with no guarantee of water.

Cheers

Steve

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