Thanks for your responses.
The pipes are usually 1/2" or 3/4", and the holes we are trying to make are about an inch long. They just need to be big enough to vent air quickly but not to deep to make the pipe fragile. A lot of small holes works, but it is not as affective. I'll attach an image...
Dear eng-tips community,
This will be my first post here. I've come seeking help. I recently started working for a small environmental company that installs groundwater sampling systems. A very important part of the installation process is a polyethylene pipe that is sent down the borehole and...