The only way an excavator can know the exact location, range, and types of utilities is usually to Call the underground utilities coordinator, and ask for that the locations be marked. In many jurisdictions, there is no charge for this provider, but advance notification is often a legal necessity. Immediate https://s3.us.cloud-object-storage.appdomain.cloud/digitalasset/Bess-Utility-Solutions-Hayward/Underground-Utility-Locating-Services.html