 On the basketball court, you have to know where the lines are. It's just as important to know where the lines are in your own yard. Kentucky law generally requires you to have underground utility lines located before most excavation work, even if it's on your own property. If you don't call 811 and you damage a natural gas line, the Kentucky Public Service Commission will investigate you and you may be fined up to $1,250. Much better to stay within the bounds of the law and call before you dig to start putting in that backboard or goal post.