Step One: Complete Application. Excavation work in California, which includes agricultural activities, has required a "call before you dig" ticket since the 1980's.A new online portal for customers to apply for water use efficiency programs, track the status of their applications, and more! In the event of Contract award, all documentation produced as part of the Contract shall become the exclusive property of the City. Browse 51 OAKLAND, CA IRRIGATION jobs from companies (hiring now) with openings. Find job opportunities near you and apply! Responsibilities: Construction labor, Irrigation labor, Service labor.