When finding utilities on a job site we at Cal G.P.R like to use a combination of methods. By using multiple methods it allows us to be extremely accurate in finding underground utilities. A DIRECT CONNECT method involves our technician directly connecting a transmitter to a hard line. The line sends a direct signal to the technicician wherever he or she may be on the job site. A SONDE method is when we induce a locatable line into the utility, we then proceed to find the path of the line above the surface. A PASSIVE method is used to find live power transmitted by a buried electrical utility. When utilities are located, our technicians use industry standard colors to mark them directly on the surface. If a non-permanent paint needs to be used this is not a problem. When paint is not permitted in cases like finished decorative surfaces or high traffic customer areas, we can use chalk, wax or other marking materials. Flags and whiskers are also used in areas such as grass or dirt when paint markings will not last.