What should be used to locate and expose utilities before trenching?

• A. A bulldozer
• B. A backhoe
• C. A sucker truck
• D. A drilling rig

Answer: (C)

Using a sucker truck, which typically uses vacuum technology, is a preferred method to locate and expose utilities before trenching. This method is effective because it removes soil and debris safely without risking damage to buried utilities. The suction capability of a sucker truck allows operators to expose utilities like pipes and cables without direct contact or harsh digging methods, which helps in minimizing disruption and preventing accidents.

In contrast, a bulldozer and a backhoe are more aggressive machinery that could inadvertently cause harm to existing utilities while attempting to locate them. A drilling rig is primarily designed for creating holes in the ground for installation purposes but is not suitable for the careful exposure of existing underground utilities. This makes the sucker truck the safest and most reliable option for this specific task.