That's what we have here in Illinois. They call it J.U.L.I.E. here, which stands for Joint Utility Locating Information for Excavators. After many years of dealing with utility locates, I'd advise you to make the call. Sooner or later, it will save you some money. It requires some planning. Some folks are the spur of the moment type. They think of something, fire up a machine, and cut an expensive cable. Also - after calling them three days before digging, take the time to document everything with photographs, and especially note who doesn't respond. It was common for the cable folks to ignore the JULIE call. You'll notice that after cutting a cable, the first thing the utility guys will do when they show up for the repair is freshen up their paint marks. I've caught them "altering" their marks after the fact. The photos give you a fighting chance, cause they'll show the locate marks before a shovel was stuck in the ground. It's no fun, and a waste of time, sitting in a courtroom. I've been there, done that. I'm not painting all utility workers as dishonest, but like in anything there's always a few that need watching. . .