A surveyor uses a GPS system to mark the location of gas lines under streets and leading to structures in Uptown Westerville as Columbus Gas prepares to upgrade sections of its service. My Final Photo for March 6, 2019.

Gas Line GPS Surveying – A surveyor uses a GPS system to mark the location of gas lines under streets and leading to structures in Uptown Westerville as Columbus Gas prepares to upgrade sections of its service. My Final Photo for March 6, 2019.