As Dave said, yes, a relatively easy DIY job. If you're going to be digging up things, burying power lines, pipes, etc, think about burying things you may want in the future, like conduits so you can fish things through. Much easier and cheaper to dig and bury things once. Conduit and PVC is cheap. If you're burying power feeds be sure to use the right type cable for underground direct burial. I learned that lesson long ago here in ancient glacier country where you can't dig 6" without hitting a rock. Grrr!
Al
Edit: I'm good at forgetting things. CarlD will probably comment on local codes. Another Grrrr !