Just the other day, we completed a job at Northrop Grumman scanning 700+ feet. This job had a serious amount pipes located. Pipes included plastic and metal from water, power, and others. This project went through the parking area through parking spots, over islands, and over grass. Ground penetrating radar (GPR) was used to identify utilities, and then a utility wand was used to trace underground metal pipes that are accessible above ground at one end.