Temporary marking provided by operators and excavators to indicate the approximate location of underground facilities and work site boundaries shall utilize the following color code per facility type:
- (1) WHITE: Proposed excavation.
- (2) PINK: Temporary survey markings.
- (3) RED: Electric power lines, cables, conduit, and lighting cables.
- (4) YELLOW: Gas, oil, steam, petroleum, or gaseous materials.
- (5) ORANGE: Communication, alarm or signal lines, cables, or conduit.
- (6) BLUE: Potable water.
- (7) PURPLE: Reclaimed water, irrigation, or slurry lines.
- (8) GREEN: Sewer or drain lines.