| Red |
electric power lines, cables, conduit and lighting cables |
Facilities Management |
| Orange |
telecommunication, alarm or signal lines, cables or conduit |
Telecommunications Infrastructure |
| Yellow |
natural gas, oil, steam, petroleum or other flammable |
Facilities Management |
| Green |
sewers and drain lines |
Facilities Management |
| Blue |
potable drinking water |
Facilities Management |
| Purple |
reclaimed water, irrigation and slurry lines |
Facilities Management |
| Pink |
temporary survey markings, unknown/unidentified facilities |
Facilities Management |
| White |
proposed excavation limits or routes |
Facilities Management |
