I have a septic in my back yard and I want to install risers on it,all I see is 2 3 inch pvc caps sticking out of the ground one is appox.7 feet away from house the other is at a 45 degree angle appox 9 feet away.I don't want to dig it up and ruin something got any help for some body that knows nothing about plumbing thanks from the first timer dan

How I locate a septic tank is to take a pointed metal rod and start poking it in the ground. When I hit the cement top I establish the 4 corners and sides and from there on all I have to do is dig. In your case I'd start at the 3" raisers. Good luck, Tom