Preventing Damage to Underground onstructing and repairing un-derground outside plant in-frastructure are complex tasks that involve multiple factors. One of the most critical factors is how to safely avoid damaging existing bur-ied pipes, conduits, and cables. While the Common Ground Alli-ance (CGA) publishes a Best Practices Guide recognized as the most com-prehensive guideline for preventing damage to underground facilities, and despite technological advancements made in preventing damage to buried infrastructure, accidental utility hits continue to happen on daily basis. These incidents can cause signifi-cant issues resulting in the disruption of essential services, property damage, costly delays in construction, and se-rious injuries—even death. Their af-16 Utility Contractor | January/Febuary 2021 C termath often includes litigation with costly legal fees and, sometimes, judg-ments that can force a contractor out of business. Identifying the presence of utilities on job sites during the planning stages is an important first step in preventing utility hits. Utilizing the One-Call lo-cating service is the first step in locat-ing and marking buried pipe and cable prior to excavation or boring. How-ever, the crew that arrives on a utility The Subsite UtiliGuard 2 utilizes GPS positioning and has an Ambient Interference Measurement (AIM) feature that scans the surrounding area for noise that could impact locating.