“Underground utility facility” means any conduit, pipe, tube, wire, cable, line, post, pole, tile, related or supporting structure which is located at or below surface grade.

“Underground utility locate” means a field marking on the surface by paint, dye, stakes or any other markings clearly visible at the time of placement which designates the horizontal course or location of the utility facility. When pipes, cables or tile are being located, the locate shall signify the center line of the pipe, cable or tile. All utility locates furnished pursuant to this chapter shall be deemed accurate if the depth of the utility facility is in accordance with city permits or as-built provided by the utility or other nationally recognized applicable standards in effect at the time of installation and the field marking provided by the utility is within 24 inches horizontally of the centerline of the facility buried above four-foot depth and 48 inches horizontally of the centerline of the facility buried below a four-foot depth.

“Utility” means a person, corporation or other entity which furnished service through, or a person who operates or owns a conduit pipe, tile, wire, cable or line for the following purposes: