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ISS COLOR CHARTS
FOR UNDERGROUND COLOR MARKINGS BY ISS
PROPOSED EXCAVATION
FOUND WITH GPR
​ELECTRIC POWERLINES, CABLES CONDUIT AND LIGHTING CABLE
GAS, OIL, STEAM, PETROLEUM, OR GASEOUS MATERIALS
COMMUNICATION, ALARM OR SIGNAL LINES, CABLES OR CONDUIT
POTABLE WATER
RECLAIMED WATER, IRRIGATION, AND SLURRY LINES
SEWERS AND DRAIN LINES
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