I am on a job and we need to lay out the underground but there is nothing to pull measurements from.

why not take a few minutes and give us some background, describe your project and go into some detail about your question?

You are an electrician, doing a commercial project, and you are coming to a "Home & Garden" message board to ask how to do your job?
Have you considered that you might be a bit over your head?
Have you asked your superiors?