This study demonstrates the feasibility of using an extendable probe rod tool to install a diagnostic reference electrode coupon assembly at an existing cathodic protection (CP) test station. Traditional methods—such as mechanical or vacuum excavation—require heavy equipment, multi-person crews, permitting, and extensive safety procedures, making them costly, time-consuming, and disruptive to the environment.

The proposed method involves driving a small pilot hole with the probe rod tool, allowing a compact coupon assembly to be placed at pipeline depth. A single technician can perform the installation quickly, with minimal preparation, reduced risk, and little to no surface disturbance. This approach lowers costs, accelerates data acquisition, and enables timely troubleshooting of CP deficiencies, especially in remote, congested, or environmentally sensitive areas where conventional methods are impractical.