The primary hues according to the Conference are Employed in a similar way as from the US: purple for electric power, yellow for fuel, and blue for water. However, other colors have other meanings. Environmentally friendly is employed for telecommunication conduits. White is employed as general interaction between contractors; white https://objects-us-east-1.dream.io/blissdrive/Bess-Utility-Solutions-Hayward/Potholing-Utilities-Hayward-CA.html