Hm... Use two sets of pipes, one set well below freezing level,
the other set(unused) to please the inspector?
>They are around here. Big neoprene gasket all around the inside of the cap.Well
>gets sealed after sanitizing.
This is a pretty good description of the different types of well caps.
http://pubs.cas.psu.edu/FreePubs/pdfs/XH0011.pdf
Turns out even the sanitary caps do allow some air exchange, so they aren't
completely sealed.
> Well -- a couple of you did answer the question.....and the comment
> about the vent pipe only being a fraction of an inch makes a lot of
> sense, so I think I am good to go with the mock rock and the drilled
> holes. I'm screening the holes to keep out the wasps/yellowjackets in
> the summer.
>
> Don't know anything about the actual codes, I do know all the wells
> I've seen around here that have been drilled in the last decade or so
> all look like that one in the picture link I posted. The picture is
> taken from the opposite side of the casing, but you can see the white
> PVC water pipe and the gray electric conduit exiting the top of the
> casing and going underground.
>
You don't need to worry about venting the well. It is not like a tank
where air must get in so water can get out. Water comes into the well
from the groundwater acquier. This replaces the water pumped out and it
is not necessary for any air to vent. When the pump starts the water
level in the well will get drawn down and if air can't get in there may
be a negative pressure for a few minutes which actually helps because the
reduced pressure in the well helps draw more water from the ground.
I have two wells for geothermal heating and I have fake boulders on each
of them. My boulders come from a concrete brick supplier and are made
from concrete with rock powder mixed in for color. The walls of the
boulders are about an inch thick and they are natural rough shapes about
30' x 24" x 18"high. They are pretty heavy - I can lift one end and
rotate it myself to access the well but I can't pick it up and carry it.
The fake boulder is as tough as very hard concrete and can stand a lot of
abuse with no noticeable marks.
I have a retaining wall about 18" high making a raised circular
ornamental area about 8' in diameter. I have a 4" thick layer of clean
round stone around the well and sit the boulder on top of the stones and
rake a few stones up around the boulder so you can't see the straight
line bottom. If you sat your boulder on similar clean round stone then
you would get plenty of air movement for venting if you are worried about
that. I am in Winnipeg where we get at least 5 months of way below
freezing temperatures and I have never had any freezing or even much
frosting under the boulder. I am using pitless adaptors with the water
lines well below the frost line.
The setup in the picture with the water line coming out the top of the
well would freeze solid around here the first time the pump stopped for
an hour.
your better off vented if radon gas is a issue in your area