EM locators benefit from an electromagnetic radio frequency transmitter and receiver to determine utility traces. The transmitter sends out a radio sign in a specific frequency, which transmits with the conductive content within an underground pipe or other bit of infrastructure. We will usually Identify utilities around 15ft deep; nevertheless https://ewr1.vultrobjects.com/blissdrive/Bess-Utility-Solutions-Hayward/Utility-Detection-Hayward-CA.html