well inspection
well inspection
(OP)
about how long (how many days) should it take to pull the pump out of a 200 - 300 foot deep, 6" diameter well, bail, brush and acid clean the screen, and video inspect the well?
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RE: well inspection
I've seen several video loggings done for wells deeper than 400 ft and it should take 2 - 4 hours depending on set up time.
You may want to read over the acid cleaning spec to see if the acid has to be left in contact for any period of time.
You could always call a few other well contractors and tell them you're putting together a cost estimate for this and need a time estimate to propose a budget.
RE: well inspection
It will take another 3-5 days to reinstall the well pump and disinfect. The flushing, disinfection and sampling takes a minimum of 3 days.
RE: well inspection
RE: well inspection
Some acids result in positive coliform samples, which add 1-2 days per sample. I have seen a 4 day delay in restarting the well due to positive coliform samples when acid was used.
Hydrae
RE: well inspection
these are dewatering wells, not potable. how does that affect the disinfection requirement?
RE: well inspection
Most of us who follow this forum, use wells for drinking water supply. Your question on how long it should take made us assume you were looking at how long you need to provide alternative supply whether storage or other sources.
Hydrae