One Call does not provide utility locates for private underground. Propane tanks, decorative lighting, pool equipment, gas grills are just a few of the things that would require a private locate company to mark. Often the service from the main to the property also require a private locate. Such as the gas service or the electric service from the main to the meter.
Always call 811 or your local One-Call Center two to three working days before to your excavation to have the underground utilities located and marked. Remember always follow your states One-Call Law and Common Ground Alliance Best Practices.