1st Call Utility Locating serves all of Northern California. Our mission is to allow our customers to excavate confidently; avoiding potential hazards and structural damage. 1st Call Utility Locating has professionally trained utility locators with experience locating in the most difficult and complex conditions. Our locators have accurately located underground utilities at airports, universities, electric substations, power plants, oil refineries, shopping centers, prisons, hospitals, state and county parks, industrial parks and gas stations. Services include: Locating of Underground Utilities Electrical Cables Gas Lines Communication Cables Water Lines Sewer Mains Storm Drains CAD Services After surveying utilities, CAD services can be provided to update existing utility maps according to industry standards.