gas line stake flag beside a light post

alarm american association beside buried cable cables canada colored commercial communication conduit construction dig drain drinking easily energy engineering excavation facilities flag flagging flags fuel gas government ground industrial irrigation landscaping light line lines locating maintenance marker marking markings pipe post proposed public pushes pvc reclaimed residential resort services sewer sewers sign signal slurry stake states survey surveying tape tearresistant telecommunication telephone temporary tough trench underground unidentified united unknown use utilities utility warning water wire works