Using utility maps and specialized equipment, development crews mark and Find the underground utilities from the designated location. This stage makes certain exact excavation and helps prevent damage to the utilities. The preferred method of potholing is vacuum excavation, which uses higher-pressure air or water to break up the bottom https://f004.backblazeb2.com/file/DigitalAsset/Bess-Utility-Solutions-Hayward/Potholing-Utilities.html