For utility marking, the first requirement is clear access to the area where excavation or construction will take place. Clients should provide the project location, work boundaries, planned excavation areas, and details about the proposed work whenever possible. Existing utility plans, site drawings, previous locating information, and details about known underground infrastructure can also help technicians understand the site before marking begins.

Professional utility marking requires specialized utility locating equipment and trained technicians to identify the approximate paths of underground infrastructure. Depending on the project, technicians may locate water, gas, electrical, telecommunications, sewer, and other underground utility lines. Once identified, the utility routes can be marked on the surface using appropriate paint, flags, or other visible markers so excavation crews can easily recognize potential utility locations.

Before marking begins, the work area should be accessible, reasonably clear of obstacles, and safe for the locating technician. The technician will review the project scope, site conditions, and areas where digging or excavation is planned. Providing accurate information and maintaining clear access helps ensure efficient utility detection and clear surface markings, supporting safer excavation and reducing the risk of accidental utility damage, costly repairs, and construction delays.