Update 5/5/2017, 10:53 AM: In response to our astute commenters, we’ve added information about the 811 program and what marking colors mean. What do you think so far? Be the first to post a comment.

Dukett said online pre-marking will be available to the public later this year. "This is the first law change that we've had to the 811 law in quite a long time,” he said.