If you haven't seen or dealt with C905 PVC pipe let me tell you about it. It's large, heavy and just a monster to work with. We used joint restraints just as a back up, but I don't think that stuff is moving anywhere 14 feet underground.
We used about 70 feet of it along with a 45 degree angle to get around the current pump station and under the current mainline that we were crossing.
Fortunately we had no issues with the current system. Ironically the contractor hit a 3" pipe that on our as-builts were supposed to be in a slightly different location and a 6" pipe. After fixing that and back filling it was on to the HDPE and the intake screen.
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