colour code contractor’s for marking underground …albertaonecall.com › media › uploads ›...
Post on 04-Jul-2020
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Whether you are plowing cable or digging a foundation, you could damage a buried utility line which could cost you money or your life.
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Safe Digging
Contractor’s Guide to
STEP 1
STEP 2
STEP 3
COLOUR CODEFOR MARKING UNDERGROUND UTILITY LINES
WHITE - proposed excavation
PINK - temporary survey markings
RED - electrical, lighting cables
YELLOW - gas, oil, steam
ORANGE - telephone, cable, TV, signals, alarms
BLUE - potable water
GREEN - sanitary and storm sewer, culverts
PURPLE - reclaimed water, irrigation, slurry
STEP 1 STEP 2 STEP 3
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