I was hoping to get a few more installs under my belt before learning the hard way. I hand dug for a few feet around where it should have been but turns out is was about 2 inches from where I stopped. I should have just dug until I found it. I'm going to do that from now on. Get this- it was only about 10 inches deep. Isn't the rule for these two feet? Anyway, it's that orange poly pipe and appears to be the common 1 1/8 outside diameter. Guess I'm headed to the plumbing supply in the morning to let them tell me how to fix it. Please no one rake me over the coals for posting this, I already feel like enough of a dumbarse. PS This is for my four year old who's standing next to the computer and insists that I throw some in.