In most cases, calling 811 (one-call) to schedule a public utility locate is only the first step for underground utility damage prevention. One-call may not have all the equipment necessary for complete results and they might not be able to locate underground utilities in all the areas you requested if the locations move onto private property and outside the bounds of One-Calls locating services. It's a wise decision to hire a private utility locating company to verify actual utility locations and/or cover all the areas you need.
