7-p's

Discussion in 'Irrigation' started by 1idejim, Aug 10, 2010.

  1. 1idejim

    1idejim LawnSite Fanatic
    Posts: 9,133

    i just took a call about a 3 acre install that i'll look at tomorrow.

    how many of you would bid a well system without a pumpdown test?

    i guess that i'm the last to look at this and nobody's done one yet.

    proper prior planning prevents piss poor performance. :hammerhead:
     
  2. AI Inc

    AI Inc LawnSite Fanatic
    Posts: 25,236

    How old is the well? If fairly new , the well co. may have the #s on file.
     
  3. Kiril

    Kiril LawnSite Fanatic
    Posts: 18,298

    Pretty hard to bid a system without knowing how many zones you need.
     
  4. Dripit good

    Dripit good LawnSite Bronze Member
    Posts: 1,081

    I'm guilty of this...:hammerhead:

    However I do put in the notes that the system design is based on xxgpm @ xxpsi.

    I'm usually pretty conservative on my zoning.
     
  5. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 47,009

    So how much time would you plan to devote to a test of this well?
     
  6. 1idejim

    1idejim LawnSite Fanatic
    Posts: 9,133

    about 3 hrs., turn all outside water on for about 2 hrs then pull the gpm.

    while waiting on the pump down i'll measure and shoot grade with the laser, distance to size the mainline, check cut in/cut out pressure and make provisions for out buildings and barns/corrals ect.

    water tables can vary due to new development and droughts, even with the drillers numbers i want to do a test of my own.

    i'm real cautious and conservative with well supplied systems.
     
  7. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 47,009

    Three hours should be enough time. I've encountered wells that took over an hour of normal (50 psi output pressure) operation to show signs of running low. This time requirement becomes a problem when you want to give a quickie price quote.
     
  8. Dripit good

    Dripit good LawnSite Bronze Member
    Posts: 1,081

    Are you letting the 2,700-9,000 gallons run down the drain, or do you attempt to capture/reroute it for a use?
     
  9. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 47,009

    It is being used. Evaluating the well is an end to itself. Water well spent.
     
  10. jvanvliet

    jvanvliet LawnSite Gold Member
    Posts: 3,939

    Personally I wouldn't...

    I charge $125.00 - $195.00 for the test (cheap but it doesn't usually take me three hours) refundable if I get the work. If I don't get the work, they get the written results.

    I never rely on somebody elses #'s. It's a formula for dissaster.

    If they don't want to spend the money up front for a proper evaluation, include disclaimers in the contract, I can't warranty work in the absence of performance data. Anything over 250.00, I write a contract.
     

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